Functional properties of a Brazilian derived mouse embryonic stem cell line
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Academia Brasileira de Ciências
2015
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| author | LEANDRO VAIRO |
| author_facet | LEANDRO VAIRO |
| contents | Functional properties of a Brazilian derived mouse embryonic stem cell line LEANDRO VAIRO EMILIANO MEDEI DANÚBIA S. DOS SANTOS DEIVID C. RODRIGUES REGINA C.S. GOLDENBERG ANTONIO C. CAMPOS DE CARVALHO Multidisciplinaria (Ciencias Naturales y Exactas) Cx43 channels gap junctions mouse embryonic stem cells electrophysiological properties Pluripotent mouse embryonic stem cells (mESC) are cell lines derived from the inner cell mass of blastocyst-stage early mammalian embryos. Since ion channel modulation has been reported to interfere with both growth and differentiation process in mouse and human ESC it is important to characterize the electrophysiological properties of newly generated mESC and compare them to other lines. In this work, we studied the intercellular communication by way of gap junctions in a Brazilian derived mESC (USP-1, generated by Dr. Lygia Pereira’s group) and characterized its electrophysiological properties. We used immunofluorescence and RT-PCR to reveal the presence of connexin 43 (Cx43), pluripotency markers and ion channels. Using a co-culture of neonatal mouse cardiomyocytes with mESC, where the heart cells expressed the enhanced Green Fluorescent Protein, we performed dye injections to assess functional coupling between the two cell types observing dye diffusion. The patch-clamp study showed outward currents identified as two types of potassium currents, transient outward potassium current (Ito) and delayed rectifier outward potassium current (Iks), by use of specific drug blockage. Calcium or sodium currents in undifferentiated mESC were not identified. We conclude that USP-1 mESC has functional Cx43 channels establishing intercellular communication among themselves and with cardiomyocytes and has a similar electrophysiological profile compared to other mESC cell lines. 2015 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32738838024 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.87 |
| format | Artículo científico |
| id | redalyc_32738838024 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Functional properties of a Brazilian derived mouse embryonic stem cell line LEANDRO VAIRO Multidisciplinaria (Ciencias Naturales y Exactas) Cx43 channels gap junctions mouse embryonic stem cells electrophysiological properties Functional properties of a Brazilian derived mouse embryonic stem cell line LEANDRO VAIRO EMILIANO MEDEI DANÚBIA S. DOS SANTOS DEIVID C. RODRIGUES REGINA C.S. GOLDENBERG ANTONIO C. CAMPOS DE CARVALHO Multidisciplinaria (Ciencias Naturales y Exactas) Cx43 channels gap junctions mouse embryonic stem cells electrophysiological properties Pluripotent mouse embryonic stem cells (mESC) are cell lines derived from the inner cell mass of blastocyst-stage early mammalian embryos. Since ion channel modulation has been reported to interfere with both growth and differentiation process in mouse and human ESC it is important to characterize the electrophysiological properties of newly generated mESC and compare them to other lines. In this work, we studied the intercellular communication by way of gap junctions in a Brazilian derived mESC (USP-1, generated by Dr. Lygia Pereira’s group) and characterized its electrophysiological properties. We used immunofluorescence and RT-PCR to reveal the presence of connexin 43 (Cx43), pluripotency markers and ion channels. Using a co-culture of neonatal mouse cardiomyocytes with mESC, where the heart cells expressed the enhanced Green Fluorescent Protein, we performed dye injections to assess functional coupling between the two cell types observing dye diffusion. The patch-clamp study showed outward currents identified as two types of potassium currents, transient outward potassium current (Ito) and delayed rectifier outward potassium current (Iks), by use of specific drug blockage. Calcium or sodium currents in undifferentiated mESC were not identified. We conclude that USP-1 mESC has functional Cx43 channels establishing intercellular communication among themselves and with cardiomyocytes and has a similar electrophysiological profile compared to other mESC cell lines. 2015 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32738838024 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.87 |
| title | Functional properties of a Brazilian derived mouse embryonic stem cell line |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Cx43 channels gap junctions mouse embryonic stem cells electrophysiological properties |
| url | https://www.redalyc.org/articulo.oa?id=32738838024 |