Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny

Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same...
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Autor*in:	Véron, Amélie S [verfasserIn] Lemaitre, Claire Gautier, Christian Lacroix, Vincent Sagot, Marie-France

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2011

Schlagwörter:	Segmental Duplication Gene Density Spatial Proximity Locus Pair Chromosome Territory

Anmerkung:	© Véron et al; licensee BioMed Central Ltd. 2011

Übergeordnetes Werk:	Enthalten in: BMC genomics - London : BioMed Central, 2000, 12(2011), 1 vom: 10. Juni
Übergeordnetes Werk:	volume:12 ; year:2011 ; number:1 ; day:10 ; month:06

Links:	Volltext

DOI / URN:	10.1186/1471-2164-12-303

Katalog-ID:	SPR027061000

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520			\|a Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case.
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author_variant	a s v as asv c l cl c g cg v l vl m f s mfs
matchkey_str	article:14712164:2011----::ls3poiiyfvltoayrapitagefrhn
hierarchy_sort_str	2011
publishDate	2011
allfields	10.1186/1471-2164-12-303 doi (DE-627)SPR027061000 (SPR)1471-2164-12-303-e DE-627 ger DE-627 rakwb eng Véron, Amélie S verfasserin aut Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Véron et al; licensee BioMed Central Ltd. 2011 Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213 Lemaitre, Claire aut Gautier, Christian aut Lacroix, Vincent aut Sagot, Marie-France aut Enthalten in BMC genomics London : BioMed Central, 2000 12(2011), 1 vom: 10. Juni (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:12 year:2011 number:1 day:10 month:06 https://dx.doi.org/10.1186/1471-2164-12-303 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_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 12 2011 1 10 06
spelling	10.1186/1471-2164-12-303 doi (DE-627)SPR027061000 (SPR)1471-2164-12-303-e DE-627 ger DE-627 rakwb eng Véron, Amélie S verfasserin aut Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Véron et al; licensee BioMed Central Ltd. 2011 Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213 Lemaitre, Claire aut Gautier, Christian aut Lacroix, Vincent aut Sagot, Marie-France aut Enthalten in BMC genomics London : BioMed Central, 2000 12(2011), 1 vom: 10. Juni (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:12 year:2011 number:1 day:10 month:06 https://dx.doi.org/10.1186/1471-2164-12-303 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_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 12 2011 1 10 06
allfields_unstemmed	10.1186/1471-2164-12-303 doi (DE-627)SPR027061000 (SPR)1471-2164-12-303-e DE-627 ger DE-627 rakwb eng Véron, Amélie S verfasserin aut Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Véron et al; licensee BioMed Central Ltd. 2011 Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213 Lemaitre, Claire aut Gautier, Christian aut Lacroix, Vincent aut Sagot, Marie-France aut Enthalten in BMC genomics London : BioMed Central, 2000 12(2011), 1 vom: 10. Juni (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:12 year:2011 number:1 day:10 month:06 https://dx.doi.org/10.1186/1471-2164-12-303 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_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 12 2011 1 10 06
allfieldsGer	10.1186/1471-2164-12-303 doi (DE-627)SPR027061000 (SPR)1471-2164-12-303-e DE-627 ger DE-627 rakwb eng Véron, Amélie S verfasserin aut Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Véron et al; licensee BioMed Central Ltd. 2011 Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213 Lemaitre, Claire aut Gautier, Christian aut Lacroix, Vincent aut Sagot, Marie-France aut Enthalten in BMC genomics London : BioMed Central, 2000 12(2011), 1 vom: 10. Juni (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:12 year:2011 number:1 day:10 month:06 https://dx.doi.org/10.1186/1471-2164-12-303 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_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 12 2011 1 10 06
allfieldsSound	10.1186/1471-2164-12-303 doi (DE-627)SPR027061000 (SPR)1471-2164-12-303-e DE-627 ger DE-627 rakwb eng Véron, Amélie S verfasserin aut Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Véron et al; licensee BioMed Central Ltd. 2011 Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213 Lemaitre, Claire aut Gautier, Christian aut Lacroix, Vincent aut Sagot, Marie-France aut Enthalten in BMC genomics London : BioMed Central, 2000 12(2011), 1 vom: 10. Juni (DE-627)326644954 (DE-600)2041499-7 1471-2164 nnns volume:12 year:2011 number:1 day:10 month:06 https://dx.doi.org/10.1186/1471-2164-12-303 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_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 12 2011 1 10 06
language	English
source	Enthalten in BMC genomics 12(2011), 1 vom: 10. Juni volume:12 year:2011 number:1 day:10 month:06
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author	Véron, Amélie S
spellingShingle	Véron, Amélie S misc Segmental Duplication misc Gene Density misc Spatial Proximity misc Locus Pair misc Chromosome Territory Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny
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topic_title	Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny Segmental Duplication (dpeaa)DE-He213 Gene Density (dpeaa)DE-He213 Spatial Proximity (dpeaa)DE-He213 Locus Pair (dpeaa)DE-He213 Chromosome Territory (dpeaa)DE-He213
topic	misc Segmental Duplication misc Gene Density misc Spatial Proximity misc Locus Pair misc Chromosome Territory
topic_unstemmed	misc Segmental Duplication misc Gene Density misc Spatial Proximity misc Locus Pair misc Chromosome Territory
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title	Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny
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title_full	Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny
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title_sort	close 3d proximity of evolutionary breakpoints argues for the notion of spatial synteny
title_auth	Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny
abstract	Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. © Véron et al; licensee BioMed Central Ltd. 2011
abstractGer	Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. © Véron et al; licensee BioMed Central Ltd. 2011
abstract_unstemmed	Background Folding and intermingling of chromosomes has the potential of bringing close to each other loci that are very distant genomically or even on different chromosomes. On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. To characterise this phenomenon, we propose to use the notion of spatial synteny which generalises the notion of genomic synteny to the 3D case. © Véron et al; licensee BioMed Central Ltd. 2011
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title_short	Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny
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On the other hand, genomic rearrangements also play a major role in the reorganisation of loci proximities. Whether the same loci are involved in both mechanisms has been studied in the case of somatic rearrangements, but never from an evolutionary standpoint. Results In this paper, we analysed the correlation between two datasets: (i) whole-genome chromatin contact data obtained in human cells using the Hi-C protocol; and (ii) a set of breakpoint regions resulting from evolutionary rearrangements which occurred since the split of the human and mouse lineages. Surprisingly, we found that two loci distant in the human genome but adjacent in the mouse genome are significantly more often observed in close proximity in the human nucleus than expected. Importantly, we show that this result holds for loci located on the same chromosome regardless of the genomic distance separating them, and the signal is stronger in gene-rich and open-chromatin regions. Conclusions These findings strongly suggest that part of the 3D organisation of chromosomes may be conserved across very large evolutionary distances. 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Close 3D proximity of evolutionary breakpoints argues for the notion of spatial synteny

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