The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls

Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Wildschutte, Julia H [verfasserIn] Ram, Daniel Subramanian, Ravi Stevens, Victoria L Coffin, John M

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2014

Schlagwörter:	Endogenous retrovirus Provirus HERV-K Breast cancer Betaretroviridae MMTV JSRV

Anmerkung:	© Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (

Übergeordnetes Werk:	Enthalten in: Retrovirology - London : BioMed Central, 2004, 11(2014), 1 vom: 12. Aug.
Übergeordnetes Werk:	volume:11 ; year:2014 ; number:1 ; day:12 ; month:08

Links:	Volltext

DOI / URN:	10.1186/s12977-014-0062-3

Katalog-ID:	SPR029173353

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100	1		\|a Wildschutte, Julia H \|e verfasserin \|4 aut
245	1	4	\|a The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
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520			\|a Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease.
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700	1		\|a Subramanian, Ravi \|4 aut
700	1		\|a Stevens, Victoria L \|4 aut
700	1		\|a Coffin, John M \|4 aut
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allfields	10.1186/s12977-014-0062-3 doi (DE-627)SPR029173353 (SPR)s12977-014-0062-3-e DE-627 ger DE-627 rakwb eng Wildschutte, Julia H verfasserin aut The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213 Ram, Daniel aut Subramanian, Ravi aut Stevens, Victoria L aut Coffin, John M aut Enthalten in Retrovirology London : BioMed Central, 2004 11(2014), 1 vom: 12. Aug. (DE-627)385612931 (DE-600)2142602-8 1742-4690 nnns volume:11 year:2014 number:1 day:12 month:08 https://dx.doi.org/10.1186/s12977-014-0062-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2014 1 12 08
spelling	10.1186/s12977-014-0062-3 doi (DE-627)SPR029173353 (SPR)s12977-014-0062-3-e DE-627 ger DE-627 rakwb eng Wildschutte, Julia H verfasserin aut The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213 Ram, Daniel aut Subramanian, Ravi aut Stevens, Victoria L aut Coffin, John M aut Enthalten in Retrovirology London : BioMed Central, 2004 11(2014), 1 vom: 12. Aug. (DE-627)385612931 (DE-600)2142602-8 1742-4690 nnns volume:11 year:2014 number:1 day:12 month:08 https://dx.doi.org/10.1186/s12977-014-0062-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2014 1 12 08
allfields_unstemmed	10.1186/s12977-014-0062-3 doi (DE-627)SPR029173353 (SPR)s12977-014-0062-3-e DE-627 ger DE-627 rakwb eng Wildschutte, Julia H verfasserin aut The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213 Ram, Daniel aut Subramanian, Ravi aut Stevens, Victoria L aut Coffin, John M aut Enthalten in Retrovirology London : BioMed Central, 2004 11(2014), 1 vom: 12. Aug. (DE-627)385612931 (DE-600)2142602-8 1742-4690 nnns volume:11 year:2014 number:1 day:12 month:08 https://dx.doi.org/10.1186/s12977-014-0062-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2014 1 12 08
allfieldsGer	10.1186/s12977-014-0062-3 doi (DE-627)SPR029173353 (SPR)s12977-014-0062-3-e DE-627 ger DE-627 rakwb eng Wildschutte, Julia H verfasserin aut The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213 Ram, Daniel aut Subramanian, Ravi aut Stevens, Victoria L aut Coffin, John M aut Enthalten in Retrovirology London : BioMed Central, 2004 11(2014), 1 vom: 12. Aug. (DE-627)385612931 (DE-600)2142602-8 1742-4690 nnns volume:11 year:2014 number:1 day:12 month:08 https://dx.doi.org/10.1186/s12977-014-0062-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2014 1 12 08
allfieldsSound	10.1186/s12977-014-0062-3 doi (DE-627)SPR029173353 (SPR)s12977-014-0062-3-e DE-627 ger DE-627 rakwb eng Wildschutte, Julia H verfasserin aut The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls 2014 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213 Ram, Daniel aut Subramanian, Ravi aut Stevens, Victoria L aut Coffin, John M aut Enthalten in Retrovirology London : BioMed Central, 2004 11(2014), 1 vom: 12. Aug. (DE-627)385612931 (DE-600)2142602-8 1742-4690 nnns volume:11 year:2014 number:1 day:12 month:08 https://dx.doi.org/10.1186/s12977-014-0062-3 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2014 1 12 08
language	English
source	Enthalten in Retrovirology 11(2014), 1 vom: 12. Aug. volume:11 year:2014 number:1 day:12 month:08
sourceStr	Enthalten in Retrovirology 11(2014), 1 vom: 12. Aug. volume:11 year:2014 number:1 day:12 month:08
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Endogenous retrovirus Provirus HERV-K Breast cancer Betaretroviridae MMTV JSRV
isfreeaccess_bool	true
container_title	Retrovirology
authorswithroles_txt_mv	Wildschutte, Julia H @@aut@@ Ram, Daniel @@aut@@ Subramanian, Ravi @@aut@@ Stevens, Victoria L @@aut@@ Coffin, John M @@aut@@
publishDateDaySort_date	2014-08-12T00:00:00Z
hierarchy_top_id	385612931
id	SPR029173353
language_de	englisch
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author	Wildschutte, Julia H
spellingShingle	Wildschutte, Julia H misc Endogenous retrovirus misc Provirus misc HERV-K misc Breast cancer misc Betaretroviridae misc MMTV misc JSRV The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
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topic_title	The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls Endogenous retrovirus (dpeaa)DE-He213 Provirus (dpeaa)DE-He213 HERV-K (dpeaa)DE-He213 Breast cancer (dpeaa)DE-He213 Betaretroviridae (dpeaa)DE-He213 MMTV (dpeaa)DE-He213 JSRV (dpeaa)DE-He213
topic	misc Endogenous retrovirus misc Provirus misc HERV-K misc Breast cancer misc Betaretroviridae misc MMTV misc JSRV
topic_unstemmed	misc Endogenous retrovirus misc Provirus misc HERV-K misc Breast cancer misc Betaretroviridae misc MMTV misc JSRV
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title	The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
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title_full	The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
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author_browse	Wildschutte, Julia H Ram, Daniel Subramanian, Ravi Stevens, Victoria L Coffin, John M
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title_sort	distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
title_auth	The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
abstract	Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (
abstractGer	Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (
abstract_unstemmed	Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease. © Wildschutte et al., licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (
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title_short	The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls
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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background Integration of retroviral DNA into a germ cell can result in a provirus that is transmitted vertically to the host’s offspring. In humans, such endogenous retroviruses (HERVs) comprise >8% of the genome. The HERV-K(HML-2) proviruses consist of ~90 elements related to mouse mammary tumor virus, which causes breast cancer in mice. A subset of HERV-K(HML-2) proviruses has some or all genes intact, and even encodes functional proteins, though a replication competent copy has yet to be observed. More than 10% of HML-2 proviruses are human-specific, having integrated subsequent to the Homo-Pan divergence, and, of these, 11 are currently known to be polymorphic in integration site with variable frequencies among individuals. Increased expression of the most recent HML-2 proviruses has been observed in tissues and cell lines from several types of cancer, including breast cancer, for which expression may provide a meaningful marker of the disease. Results In this study, we performed a case–control analysis to investigate the possible relationship between the genome-wide presence of individual polymorphic HML-2 proviruses with the occurrence of breast cancer. For this purpose, we screened 50 genomic DNA samples from individuals diagnosed with breast cancer or without history of the disease (n = 25 per group) utilizing a combination of locus-specific PCR screening, in silico analysis of HML-2 content within the reference human genome sequence, and high-resolution genomic hybridization in semi-dried agarose. By implementing this strategy, we were able to analyze the distribution of both annotated and previously undescribed polymorphic HML-2 proviruses within our sample set, and to assess their possible association with disease outcome. Conclusions In a case–control analysis of 50 humans with regard to breast cancer diagnosis, we found no significant difference in the prevalence of proviruses between groups, suggesting common polymorphic HML-2 proviruses are not associated with breast cancer. Our findings indicate a higher level of putatively novel HML-2 sites within the population, providing support for additional recent insertion events, implying ongoing, yet rare, activities. These findings do not rule out either the possibility of involvement of such proviruses in a subset of breast cancers, or their possible utility as tissue-specific markers of disease.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Endogenous retrovirus</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Provirus</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">HERV-K</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Breast cancer</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Betaretroviridae</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">MMTV</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">JSRV</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Ram, Daniel</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Subramanian, Ravi</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Stevens, Victoria L</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Coffin, John M</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Retrovirology</subfield><subfield code="d">London : BioMed Central, 2004</subfield><subfield code="g">11(2014), 1 vom: 12. 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The distribution of insertionally polymorphic endogenous retroviruses in breast cancer patients and cancer-free controls

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