Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells

Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model an...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Fadel, Maha [verfasserIn] Kassab, Kawser [verfasserIn] Youssef, Tareq [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2010

Schlagwörter:	Photodynamic therapy Hypericin Drug carrier Anti-hepatocyte specific antigen Liposomes Hepatocellular carcinoma

Übergeordnetes Werk:	Enthalten in: Lasers in medical science - London : Springer, 1986, 25(2010), 5 vom: 15. Apr., Seite 675-683
Übergeordnetes Werk:	volume:25 ; year:2010 ; number:5 ; day:15 ; month:04 ; pages:675-683

Links:	Volltext

DOI / URN:	10.1007/s10103-010-0787-8

Katalog-ID:	SPR008749841

Internformat


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245	1	0	\|a Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
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520			\|a Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp.
650		4	\|a Photodynamic therapy \|7 (dpeaa)DE-He213
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650		4	\|a Anti-hepatocyte specific antigen \|7 (dpeaa)DE-He213
650		4	\|a Liposomes \|7 (dpeaa)DE-He213
650		4	\|a Hepatocellular carcinoma \|7 (dpeaa)DE-He213
700	1		\|a Kassab, Kawser \|e verfasserin \|4 aut
700	1		\|a Youssef, Tareq \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Lasers in medical science \|d London : Springer, 1986 \|g 25(2010), 5 vom: 15. Apr., Seite 675-683 \|w (DE-627)300186223 \|w (DE-600)1481688-X \|x 1435-604X \|7 nnns
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912			\|a GBV_ILN_24
912			\|a GBV_ILN_31
912			\|a GBV_ILN_32
912			\|a GBV_ILN_39
912			\|a GBV_ILN_40
912			\|a GBV_ILN_60
912			\|a GBV_ILN_62
912			\|a GBV_ILN_63
912			\|a GBV_ILN_69
912			\|a GBV_ILN_70
912			\|a GBV_ILN_73
912			\|a GBV_ILN_74
912			\|a GBV_ILN_90
912			\|a GBV_ILN_95
912			\|a GBV_ILN_100
912			\|a GBV_ILN_101
912			\|a GBV_ILN_105
912			\|a GBV_ILN_110
912			\|a GBV_ILN_120
912			\|a GBV_ILN_138
912			\|a GBV_ILN_150
912			\|a GBV_ILN_151
912			\|a GBV_ILN_161
912			\|a GBV_ILN_170
912			\|a GBV_ILN_171
912			\|a GBV_ILN_187
912			\|a GBV_ILN_213
912			\|a GBV_ILN_224
912			\|a GBV_ILN_230
912			\|a GBV_ILN_250
912			\|a GBV_ILN_267
912			\|a GBV_ILN_281
912			\|a GBV_ILN_285
912			\|a GBV_ILN_293
912			\|a GBV_ILN_370
912			\|a GBV_ILN_602
912			\|a GBV_ILN_636
912			\|a GBV_ILN_702
912			\|a GBV_ILN_711
912			\|a GBV_ILN_2001
912			\|a GBV_ILN_2003
912			\|a GBV_ILN_2004
912			\|a GBV_ILN_2005
912			\|a GBV_ILN_2006
912			\|a GBV_ILN_2007
912			\|a GBV_ILN_2009
912			\|a GBV_ILN_2010
912			\|a GBV_ILN_2011
912			\|a GBV_ILN_2014
912			\|a GBV_ILN_2015
912			\|a GBV_ILN_2020
912			\|a GBV_ILN_2021
912			\|a GBV_ILN_2025
912			\|a GBV_ILN_2026
912			\|a GBV_ILN_2027
912			\|a GBV_ILN_2031
912			\|a GBV_ILN_2034
912			\|a GBV_ILN_2037
912			\|a GBV_ILN_2038
912			\|a GBV_ILN_2039
912			\|a GBV_ILN_2044
912			\|a GBV_ILN_2048
912			\|a GBV_ILN_2049
912			\|a GBV_ILN_2050
912			\|a GBV_ILN_2055
912			\|a GBV_ILN_2057
912			\|a GBV_ILN_2059
912			\|a GBV_ILN_2061
912			\|a GBV_ILN_2064
912			\|a GBV_ILN_2065
912			\|a GBV_ILN_2068
912			\|a GBV_ILN_2070
912			\|a GBV_ILN_2086
912			\|a GBV_ILN_2088
912			\|a GBV_ILN_2093
912			\|a GBV_ILN_2106
912			\|a GBV_ILN_2107
912			\|a GBV_ILN_2108
912			\|a GBV_ILN_2110
912			\|a GBV_ILN_2111
912			\|a GBV_ILN_2112
912			\|a GBV_ILN_2113
912			\|a GBV_ILN_2116
912			\|a GBV_ILN_2118
912			\|a GBV_ILN_2119
912			\|a GBV_ILN_2122
912			\|a GBV_ILN_2129
912			\|a GBV_ILN_2143
912			\|a GBV_ILN_2144
912			\|a GBV_ILN_2147
912			\|a GBV_ILN_2148
912			\|a GBV_ILN_2152
912			\|a GBV_ILN_2153
912			\|a GBV_ILN_2188
912			\|a GBV_ILN_2190
912			\|a GBV_ILN_2232
912			\|a GBV_ILN_2336
912			\|a GBV_ILN_2446
912			\|a GBV_ILN_2470
912			\|a GBV_ILN_2472
912			\|a GBV_ILN_2507
912			\|a GBV_ILN_2522
912			\|a GBV_ILN_2548
912			\|a GBV_ILN_4012
912			\|a GBV_ILN_4035
912			\|a GBV_ILN_4037
912			\|a GBV_ILN_4046
912			\|a GBV_ILN_4112
912			\|a GBV_ILN_4125
912			\|a GBV_ILN_4126
912			\|a GBV_ILN_4242
912			\|a GBV_ILN_4246
912			\|a GBV_ILN_4249
912			\|a GBV_ILN_4251
912			\|a GBV_ILN_4305
912			\|a GBV_ILN_4306
912			\|a GBV_ILN_4307
912			\|a GBV_ILN_4313
912			\|a GBV_ILN_4322
912			\|a GBV_ILN_4323
912			\|a GBV_ILN_4324
912			\|a GBV_ILN_4325
912			\|a GBV_ILN_4326
912			\|a GBV_ILN_4333
912			\|a GBV_ILN_4334
912			\|a GBV_ILN_4335
912			\|a GBV_ILN_4336
912			\|a GBV_ILN_4338
912			\|a GBV_ILN_4393
912			\|a GBV_ILN_4700
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author_variant	m f mf k k kk t y ty
matchkey_str	article:1435604X:2010----::htdnmcfiayfyeiitreebtoeieyehiusoea
hierarchy_sort_str	2010
bklnumber	44.65
publishDate	2010
allfields	10.1007/s10103-010-0787-8 doi (DE-627)SPR008749841 (SPR)s10103-010-0787-8-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.65 bkl Fadel, Maha verfasserin aut Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp. Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213 Kassab, Kawser verfasserin aut Youssef, Tareq verfasserin aut Enthalten in Lasers in medical science London : Springer, 1986 25(2010), 5 vom: 15. Apr., Seite 675-683 (DE-627)300186223 (DE-600)1481688-X 1435-604X nnns volume:25 year:2010 number:5 day:15 month:04 pages:675-683 https://dx.doi.org/10.1007/s10103-010-0787-8 lizenzpflichtig 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_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 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_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE AR 25 2010 5 15 04 675-683
spelling	10.1007/s10103-010-0787-8 doi (DE-627)SPR008749841 (SPR)s10103-010-0787-8-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.65 bkl Fadel, Maha verfasserin aut Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp. Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213 Kassab, Kawser verfasserin aut Youssef, Tareq verfasserin aut Enthalten in Lasers in medical science London : Springer, 1986 25(2010), 5 vom: 15. Apr., Seite 675-683 (DE-627)300186223 (DE-600)1481688-X 1435-604X nnns volume:25 year:2010 number:5 day:15 month:04 pages:675-683 https://dx.doi.org/10.1007/s10103-010-0787-8 lizenzpflichtig 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_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 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_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE AR 25 2010 5 15 04 675-683
allfields_unstemmed	10.1007/s10103-010-0787-8 doi (DE-627)SPR008749841 (SPR)s10103-010-0787-8-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.65 bkl Fadel, Maha verfasserin aut Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp. Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213 Kassab, Kawser verfasserin aut Youssef, Tareq verfasserin aut Enthalten in Lasers in medical science London : Springer, 1986 25(2010), 5 vom: 15. Apr., Seite 675-683 (DE-627)300186223 (DE-600)1481688-X 1435-604X nnns volume:25 year:2010 number:5 day:15 month:04 pages:675-683 https://dx.doi.org/10.1007/s10103-010-0787-8 lizenzpflichtig 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_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 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_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE AR 25 2010 5 15 04 675-683
allfieldsGer	10.1007/s10103-010-0787-8 doi (DE-627)SPR008749841 (SPR)s10103-010-0787-8-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.65 bkl Fadel, Maha verfasserin aut Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp. Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213 Kassab, Kawser verfasserin aut Youssef, Tareq verfasserin aut Enthalten in Lasers in medical science London : Springer, 1986 25(2010), 5 vom: 15. Apr., Seite 675-683 (DE-627)300186223 (DE-600)1481688-X 1435-604X nnns volume:25 year:2010 number:5 day:15 month:04 pages:675-683 https://dx.doi.org/10.1007/s10103-010-0787-8 lizenzpflichtig 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_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 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_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE AR 25 2010 5 15 04 675-683
allfieldsSound	10.1007/s10103-010-0787-8 doi (DE-627)SPR008749841 (SPR)s10103-010-0787-8-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.65 bkl Fadel, Maha verfasserin aut Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp. Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213 Kassab, Kawser verfasserin aut Youssef, Tareq verfasserin aut Enthalten in Lasers in medical science London : Springer, 1986 25(2010), 5 vom: 15. Apr., Seite 675-683 (DE-627)300186223 (DE-600)1481688-X 1435-604X nnns volume:25 year:2010 number:5 day:15 month:04 pages:675-683 https://dx.doi.org/10.1007/s10103-010-0787-8 lizenzpflichtig 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_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 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_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 44.65 ASE AR 25 2010 5 15 04 675-683
language	English
source	Enthalten in Lasers in medical science 25(2010), 5 vom: 15. Apr., Seite 675-683 volume:25 year:2010 number:5 day:15 month:04 pages:675-683
sourceStr	Enthalten in Lasers in medical science 25(2010), 5 vom: 15. Apr., Seite 675-683 volume:25 year:2010 number:5 day:15 month:04 pages:675-683
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Photodynamic therapy Hypericin Drug carrier Anti-hepatocyte specific antigen Liposomes Hepatocellular carcinoma
dewey-raw	610
isfreeaccess_bool	false
container_title	Lasers in medical science
authorswithroles_txt_mv	Fadel, Maha @@aut@@ Kassab, Kawser @@aut@@ Youssef, Tareq @@aut@@
publishDateDaySort_date	2010-04-15T00:00:00Z
hierarchy_top_id	300186223
dewey-sort	3610
id	SPR008749841
language_de	englisch
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author	Fadel, Maha
spellingShingle	Fadel, Maha ddc 610 bkl 44.65 misc Photodynamic therapy misc Hypericin misc Drug carrier misc Anti-hepatocyte specific antigen misc Liposomes misc Hepatocellular carcinoma Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
authorStr	Fadel, Maha
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topic_title	610 ASE 44.65 bkl Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells Photodynamic therapy (dpeaa)DE-He213 Hypericin (dpeaa)DE-He213 Drug carrier (dpeaa)DE-He213 Anti-hepatocyte specific antigen (dpeaa)DE-He213 Liposomes (dpeaa)DE-He213 Hepatocellular carcinoma (dpeaa)DE-He213
topic	ddc 610 bkl 44.65 misc Photodynamic therapy misc Hypericin misc Drug carrier misc Anti-hepatocyte specific antigen misc Liposomes misc Hepatocellular carcinoma
topic_unstemmed	ddc 610 bkl 44.65 misc Photodynamic therapy misc Hypericin misc Drug carrier misc Anti-hepatocyte specific antigen misc Liposomes misc Hepatocellular carcinoma
topic_browse	ddc 610 bkl 44.65 misc Photodynamic therapy misc Hypericin misc Drug carrier misc Anti-hepatocyte specific antigen misc Liposomes misc Hepatocellular carcinoma
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title	Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
ctrlnum	(DE-627)SPR008749841 (SPR)s10103-010-0787-8-e
title_full	Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
author_sort	Fadel, Maha
journal	Lasers in medical science
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author_browse	Fadel, Maha Kassab, Kawser Youssef, Tareq
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title_sort	photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
title_auth	Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
abstract	Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp.
abstractGer	Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp.
abstract_unstemmed	Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. In spite of the equal uptake of both free Hyp and anti-HSA-Hyp, HepG2 cells demonstrated a relatively higher mortality with anti-HSA-Hyp compared to free Hyp.
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title_short	Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells
url	https://dx.doi.org/10.1007/s10103-010-0787-8
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author2	Kassab, Kawser Youssef, Tareq
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doi_str	10.1007/s10103-010-0787-8
up_date	2024-07-03T22:56:33.925Z
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fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR008749841</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230519093333.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201005s2010 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s10103-010-0787-8</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR008749841</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s10103-010-0787-8-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.65</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Fadel, Maha</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2010</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract The photocytotoxic effect of hypericin (Hyp) targeted by two different delivery techniques, namely, liposomes and anti-hepatocyte specific antigen (anti-HSA) was investigated. Optical absorption and steady-state fluorescence were used to analyze the conjugation of Hyp with anti-HSA model and to evaluate the encapsulation capacity and drug release in a liposome model. Particle size and thermal analysis of the prepared liposomes were performed using laser-light scattering and differential scanning calorimetry (DSC), respectively. Viability study of HepG2 cells exposed to Hyp in the two delivery systems, in the dark and following visible light irradiation, was performed in comparison to free Hyp. The intracellular uptake and localization of Hyp in HepG2 cells were analyzed by means of spectrofluorometry and fluorescence microscopy. Spectroscopic measurements demonstrated that Hyp binds to anti-HSA in its monomeric form. The photocytotoxic effect of Hyp depended clearly on the form of Hyp administered, either in free form, loaded into liposomes or conjugated with anti-HSA. While liposomes loaded with Hyp (Lip-Hyp) did not induce significant phototoxicity, both free Hyp or anti-HSA-Hyp inflicted substantial cell mortality, after photoirradiation. The intracellular uptake of Lip-Hyp by HepG2 cells was estimated to be 20% less compared to free Hyp or anti-HSA-Hyp. 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Photodynamic efficacy of hypericin targeted by two delivery techniques to hepatocellular carcinoma cells

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