objective(s):to culture thein vitro mouse embryonic stem cells (mescs) and to direct their  differentiation to germ-line cells; in present study we used a vector backbone containing the fusion construct stra8-egfp to select differentiated es cells that entered meiosis.  retinoic acid was used to differentiate embryonic stem cells to germ cells. materials and methods: a fragment of stra8 gene pr...

introduction: lactate dehydrogenase is one of the cardiac enzyme markers, studied in vivo. in the present study, activity and kinetic properties of enzyme extracted from cardiomycytes derived from mouse embyronic stem cell in vitro were compared with enzyme extracted mouse neonatal from cardiomyocytes in vivo. material and methods: mouse embryonic stem cells were cultured and differentiated and...

spermatogonial stem cell (ssc) technologies provide multiple opportunities for research in the field of biotechnology and regenerative medicine. the therapeutic use of embryonic stem cells (escs) is restricted due to severe ethical and immunological concerns. therefore, we need a new pluripotent cell type. despite well-known role of germ cells in the gametogenesis, some facts apparently show th...

spinal cord injury (sci) is a destructive event that often lead to permanent neurologic deficit. current clinical treatments are aimed at preventing secondary damage, promoting regeneration, and replacing destroyed spinal cord tissue, although effective treatments for sci remain limited. cell therapies for treating sci are promising therapy for replacing dead cells, neuroprotection and axon reg...

The major goal of the Chromosome-Centric Human Proteome Project (C-HPP) is to systematically map the entire human proteome with the intent to enhance our understanding of human biology at the cellular level. However, this goal may be hindered by the lack of quality observations of given proteins due to absence of expression in a given tissue, very low abundance, and expression only in rare samp...

introduction: to evaluate the camp -mediated ibmx (3-isobutyle -1-methyl xanthin) and db-camp (dibutyryl camp) effects on differentiation of human embryonic stem cells (hescs) into nerve cells were the objectives of this study. methods: we have used royan h1 hesc- derived embryoid bodies with four treatment groups: six days treatment with ibmx (5×10 -4m) and db-camp (10 -9m) (referred to as cam...

background: since embryonic stem (es) cells have the dual ability to proliferate indefinitely and differentiate into multiple tissue types, es cells could potentially provide an unlimited cell supply for human transplantation. objective: in order to study the differentiation of mouse embryonic stem (mes) cells, they were cultured in suspension by using es media without leukemia inhibitory facto...

trying to use embryonic stem cells about 20 years ago, working with animals,  especially rats began. during these years , many experiments in mouse embryonic stem cells to transform into a variety of cells and transplanting them were led to remarkable success . in the next issue of human stem cells were considered successful until finally in 1998 the first report was published in the proliferat...

stem cells are self-renewing and undifferentiated cell types that can be differentiate into functional cells. stem cells can be classified into two main types based on their source of origin: embryonic and adult stem cells. stem cells also classified based on the range of differentiation potentials into totipotent, pluripotent, multipotent, and unipotent. multipotent stem cells have the ability...