scholarly journals A Novel Approach for the Derivation of Putative Primordial Germ Cells and Sertoli Cells from Human Embryonic Stem Cells

Stem Cells ◽  
2009 ◽  
Vol 27 (1) ◽  
pp. 68-77 ◽  
Author(s):  
Nathan Bucay ◽  
Mayra Yebra ◽  
Vincenzo Cirulli ◽  
Ivka Afrikanova ◽  
Thomas Kaido ◽  
...  
Stem Cells ◽  
2008 ◽  
Vol 26 (12) ◽  
pp. 3075-3085 ◽  
Author(s):  
Katarzyna Tilgner ◽  
Stuart P. Atkinson ◽  
Anna Golebiewska ◽  
Miodrag Stojković ◽  
Majlinda Lako ◽  
...  

Reproduction ◽  
2006 ◽  
Vol 132 (5) ◽  
pp. 699-707 ◽  
Author(s):  
Behrouz Aflatoonian ◽  
Harry Moore

Mammalian gametes are derived from a founder population of primordial germ cells (PGCs) that are determined early in embryogenesis and set aside for unique development. Understanding the mechanisms of PGC determination and differentiation is important for elucidating causes of infertility and how endocrine disrupting chemicals may potentially increase susceptibility to congenital reproductive abnormalities and conditions such as testicular cancer in adulthood (testicular dysgenesis syndrome). Primordial germ cells are closely related to embryonic stem cells (ESCs) and embryonic germ (EG) cells and comparisons between these cell types are providing new information about pluripotency and epigenetic processes. Murine ESCs can differentiate to PGCs, gametes and even blastocysts – recently live mouse pups were born from sperm generated from mESCs. Although investigations are still preliminary, human embryonic stem cells (hESCs) apparently display a similar developmental capacity to generate PGCs and immature gametes. Exactly how such gamete-like cells are generated during stem cell culture remains unclear especially as in vitro conditions are ill-defined. The findings are discussed in relation to the mechanisms of human PGC and gamete development and the biotechnology of hESCs and hEG cells.


Oncotarget ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 7814-7826 ◽  
Author(s):  
Tingting Cheng ◽  
Kui Zhai ◽  
Yan Chang ◽  
Guidong Yao ◽  
Jiahuan He ◽  
...  

Biologicals ◽  
2017 ◽  
Vol 48 ◽  
pp. 114-120 ◽  
Author(s):  
Vahid Mansouri ◽  
Mohammad Salehi ◽  
Mir davood Omrani ◽  
Zahra Niknam ◽  
Abdolreza Ardeshirylajimi

2021 ◽  
Vol 46 (3) ◽  
Author(s):  
Meysam Hassani Moghaddam ◽  
Neda Eskandari ◽  
Hossein Nikzad ◽  
Mohammad Miryounesi ◽  
Mohammad Karimian ◽  
...  

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 1676-1676 ◽  
Author(s):  
Magda Kucia ◽  
Ewa Zuba-Surma ◽  
Ryan Reca ◽  
Janina Ratajczak ◽  
Mariusz Ratajczak

Abstract Recently we identified in murine BM a homogenous population of rare (~0.01% of BMMNC) Sca-1+ lin− CD45− cells that express by RQ-PCR and immunhistochemistry markers of pluripotent stem cells (PSC) such as SSEA-1, Oct-4, Nanog and Rex-1 and highly express Rif-1 telomerase protein (Leukemia2006;20,857–869). Direct electronmicroscopical analysis revealed that these cells display several features typical for embryonic stem cells such as i) small size (2–4 um in diameter), ii) large nuclei surrounded by a narrow rim of cytoplasm, and iii) open-type chromatin (euchromatin). We also found that VSELs may be released from BM and circulate in peripheral blood during tissue/organ injuries (e.g., heart infarct, stroke). Recently we noticed that ~5–10% of purified VSELs if plated over a C2C12 murine sarcoma cell feeder layer are able to form spheres that resemble embryoid bodies. Cells from these VSEL-derived spheres (VSEL-DS) are composed of immature cells with large nuclei containing euchromatin, and similarly as purified VSELs are CXCR4+SSEA-1+Oct-4+. Furthermore, VSEL-DS after replating over C2C12 cells may again (up to 5–7 passages) grow new spheres or if plated into cultures promoting tissue differentiation expand into cells from all three germ-cell layers. The formation of VSEL-DS was observed in a presence of C2C12 cells obtained from different sources. Furthermore, VSELs isolated from GFP+ mice grew GFP+ VSEL-DS which show a diploid content of DNA. This suggests that VSEL-DS are in fact derived from VSELs and not from the supportive C2C12 cell line as well as excludes the possibility of cell fusion to the observed phenomenon. Similar spheres were also formed by VSELs isolated from murine fetal liver, spleen and thymus. Interestingly formation of VSEL-DS was associated with a young age, and no VSEL-DS were observed by cells isolated from old mice (> 2 years). We also found that cells isolated from VSEL-DS similarly as embryonic stem cells grow tumors after injection into immunodeficient NOD/SCID mice (51/52 inoculated mice). Since VSELs isolated by us express several markers of primordial germ cells (fetal-type alkaline phosphatase, Oct-4, SSEA-1, CXCR4, Mvh, Stella, Fragilis, Nobox, Hdac6) we hypothesize that VSELs are closely related to a population of primordial germ cells. These cells are specified during early gastrulation in the proximal epiblast and subsequently migrate in a CXCR4-SDF-1 dependent manner through the embryo proper to their final destination in genital ridges. It is possible that some of these cells or a population of cells closely related to them migrate astray being chemoattracted by SDF-1 to fetal liver and subsequently, during the third trimester of gestation seed together with hematopoietic stem cells in bone marrow and perhaps other organs as well. In conclusion, we postulate that VSELs identified by us and purified at the single cell level could become an important source of pluripotent stem cells for regeneration.


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