Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2014
Generation of induced pluripotent stem cells from conjunctiva.
СтатьяПоддержка NIH: внешняя программаНазвание и аннотация: Перевод пока не подготовлен
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Yang Jin, Li Yao, Erol Deniz, Wu Wen-Hsuan, Tsai Yi-Ting, Li Xiao-Rong, Davis Richard J, Tsang Stephen H
Аннотация
PURPOSE: The objective of this study was to determine whether cells from the conjunctiva could be reprogrammed into induced pluripotent stem (iPS) cells, providing an alternative source of stem cells.
METHODS: We employed a doxycycline-induced reprogrammable mouse strain to generate iPS cells from conjunctiva. The identity of the stem cells was confirmed by reverse transcription polymerase chain reaction (RT-PCR) and immunofluorescence assays. Immunocytochemistry and teratoma assays are established means for scoring stem cell pluripotency. The reprogramming efficiencies of conjunctival cells and ear fibroblasts were compared.
RESULTS: We confirmed the identity of the stem cells and demonstrated expression of pluripotency markers (OCT4, SOX2, NANOG, and SSEA1), as tested by RT-PCR and immunofluorescence assays. In addition, derived iPS cells differentiated successfully into embryoid bodies, and showed teratoma formation when injected into immunodeficient mice. Reprogramming conjunctival tissue is as efficient as reprogramming ear fibroblasts. Conjunctiva-iPS exhibited classic features of embryonic stem (ES) cells with respect to morphology, expression of surface antigens, and pluripotency-associated transcription factors, capacity to differentiate in vitro, and the ability to form all three germ layers in vivo.
CONCLUSION: The present study demonstrated that conjunctival cells, which are readily obtained during the course of many routine conjunctival biopsies and ophthalmic procedures, can be another reliable source of iPS cells.
METHODS: We employed a doxycycline-induced reprogrammable mouse strain to generate iPS cells from conjunctiva. The identity of the stem cells was confirmed by reverse transcription polymerase chain reaction (RT-PCR) and immunofluorescence assays. Immunocytochemistry and teratoma assays are established means for scoring stem cell pluripotency. The reprogramming efficiencies of conjunctival cells and ear fibroblasts were compared.
RESULTS: We confirmed the identity of the stem cells and demonstrated expression of pluripotency markers (OCT4, SOX2, NANOG, and SSEA1), as tested by RT-PCR and immunofluorescence assays. In addition, derived iPS cells differentiated successfully into embryoid bodies, and showed teratoma formation when injected into immunodeficient mice. Reprogramming conjunctival tissue is as efficient as reprogramming ear fibroblasts. Conjunctiva-iPS exhibited classic features of embryonic stem (ES) cells with respect to morphology, expression of surface antigens, and pluripotency-associated transcription factors, capacity to differentiate in vitro, and the ability to form all three germ layers in vivo.
CONCLUSION: The present study demonstrated that conjunctival cells, which are readily obtained during the course of many routine conjunctival biopsies and ophthalmic procedures, can be another reliable source of iPS cells.
Предметные рубрики MeSH
AnimalsAnti-Bacterial AgentsBiomarkersCell Culture TechniquesCoculture TechniquesConjunctivaDoxycyclineFibroblastsFluorescent Antibody Technique, IndirectHomeodomain ProteinsInduced Pluripotent Stem CellsKaryotypingLewis X AntigenMiceMice, Inbred C57BLMice, TransgenicNanog Homeobox ProteinOctamer Transcription Factor-3RNA, MessengerReverse Transcriptase Polymerase Chain ReactionSOXB1 Transcription Factors