Germ Cell Differentiation in Starfish: The Posterior Enterocoel as the Origin of Germ Cells in Asterina pectinifera. (starfish/germ cells/PGC/posterior enterocoel/haemal sinus)
نویسندگان
چکیده
منابع مشابه
The effect of BMP4 on mouse embryonic stem cell proliferation and differentiation into primordial germ cells
Background and Aim: Artificial gamete production from stem cells is a novel strategy for treatment of infertility. Among various stem cell sources, embryonic stem cells (ESC) can be considered as an appropriate source for in vitro formation of germ cells. In this study we evaluated the effect of BMP4 on proliferation and differentiation of mouse embryonic stem cells into primordial germ cells (...
متن کاملI-51: The Role of the Transcription FactorGCNF in Germ Cell Differentiation and Reproductionin Mice
The germ cell nuclear factor (GCNF) is a member of the nuclear receptor super family of transcription factors. GCNF expression during gastrulation and neurulation is critical for normal embryogenesis in mice. GCNF represses expression of the POU domain transcription factor Oct4 during mouse post-implantation development in vivo. Oct4 is thus down-regulated during female gonadal development, whe...
متن کاملNuclear distribution of proliferating cell nuclear antigen (PCNA) in fertilized eggs of the starfish Asterina pectinifera.
Previous studies (Nomura et al. (1991) Dev. Biol. 143, 289-296 (1993) Dev. Biol. 159, 288-297) determined the time of DNA replication period (S phase) in starfish eggs fertilized either during or after oocyte maturation. Here proliferating cell nuclear antigen (PCNA) localized within nuclei of starfish eggs was detected with an anti-PCNA human antiserum. Using a confocal laser scanning microsco...
متن کاملI-18: The Role of Sex Chromosomes in Female Germ Cell Differentiation
Background When gonadal sex reversal occurs in mammalian species, the resultant XX males and XY females become infertile or subfertile, suggesting critical roles of sex chromosomes in germ cell differentiation. The objective of our study is to clarify the mechanism of infertility in the B6.YTIR (XY) sex-reversed female mouse, which can be attributed to a failure in the second meiotic division i...
متن کاملComparison of Germ Cell Gene Expressions in Spontaneous Monolayer versus Embryoid Body Differentiation of Mouse Embryonic Stem Cells toward Germ Cells
Objective Genetic and morphologic similarities between mouse embryonic stem cell (ESCs) and Primordial Germ Cell (PGCs) make it difficult to distinguish the two cell types in in vitro differentiation. Using the expression of specific markers of germ cells that are not expressed or expressed at low levels in ESCs, can help recognizing in vitro differentiated cells MaterialsAndMethods In this stu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Development, Growth and Differentiation
سال: 1992
ISSN: 0012-1592,1440-169X
DOI: 10.1111/j.1440-169x.1992.00413.x