post-remission treatment in patients with acute myeloid leukemia is still controversial. one potent choice for patients with no donor available is autologous stem cell transplantation. the median follow-up period was 18 months and the median age was 26 years old. in the review of 116 recently diagnosed aml patients (except aml- m3) who underwent autologous stem cell transplantation, 72.4% of pa...

Successful male germ cell transplantation requires depletion of the host germ cells to allow efficient colonization of the donor spermatogonial stem cells. Although a sterilizing drug, busulfan, is commonly used for the preparation of recipient models before transplantation, the optimal dose of this drug has not yet been defined in dogs. In this study, 1-year-old mongrel dogs were intravenously...

Objective(s):Mesenchymal stem cells (MSCs) derived from Wharton’s jelly (WJ-MSCs) are now much more appealing for cell-based infertility therapy. Hence, WJ-MSCs differentiation toward germ layer cells for cell therapy purposes is currently under intensive study. Materials and Methods: MSCs were isolated from human Wharton’s jelly and treated with BMP4, retinoic acid (RA) or co-cultured on huma...

Cnot7 is a co-factor of transcription regulation, expressed in a variety of tissues including the lung, liver, thyroid gland, and testis. Our previous study (Nakamura et al., 2004) showed that deletion of the Cnot7 gene in mice caused almost no abnormal phenotypes except for male infertility, due to oligo-astheno-teratozoospermia. This study also showed that Cnot7-/- mouse germ cells transplant...

objective(s): sertoli cells support in vivo germ cell production; but, its exact mechanism has not been well understood. the present study was designed to analyze the effect of sertoli cells in differentiation of mouse embryonic stem cells (mescs) to germ cells.   materials and methods: a fusion construct composed of a stra8 gene promoter and the coding region of enhanced green fluorescence pro...

BACKGROUND Spermatogonial stem cells (SSCs) continuously undergo self-renewal division to support spermatogenesis. SSCs are thought to have a fixed phenotype, and development of a germ cell transplantation technique facilitated their characterization and prospective isolation in a deterministic manner; however, our in vitro SSC culture experiments indicated heterogeneity of cultured cells and s...

germline and somatic stem cells are distinct types of stem cells that are dedicated to reproduction and somatic tissue regeneration, respectively. germline stem cells (gscs), which can self-renew and generate gametes, are unique stem cells in that they are solely dedicated to transmit genetic information from generation to generation. we developed a strategy for the establishment of germline st...

in this center, from 1991 to 2002, 89 chronic myelogenous leukemic (cml) patients, age ranging between 8-48 years with a median age of 29, underwent hematopoietic stem cell transplantation. eighty-eight patients were in the first chronic phase of disease. twenty-three patients received bone marrow transplantation (bmt) and 66 patients received peripheral blood stem cell transplantations (pbsct)...

Primordial germ cells (PGCs) are derived from a population of pluripotent epiblast cells in mice. However, little is known about when and how PGCs acquire the capacity to differentiate into functional germ cells, while keeping the potential to derive pluripotent embryonic germ cells and teratocarcinomas. In this investigation, we show that epiblast cells and PGCs can establish colonies of sperm...

background:gossypol is a yellow toxic pigment from the cottonseed that can cause acute or chronic toxicity in humans and animals by affecting the testicular tissues. nowadays cottonseed is used as food supplement for ruminants specially the sheep. in this study, two different stem cell lines of testicular tissue including gc1-spg (mouse testis) and sftf-pi43 (sheep testis) cells were used to ev...