PRIMORDIAL GERM CELL-DERIVED MOUSE EMBRYONIC GERM (EG) CELLSIN VITRORESEMBLE UNDIFFERENTIATED STEM CELLS WITH RESPECT TO DIFFERENTIATION CAPACITY AND CELL CYCLE DISTRIBUTION

1996 ◽  
Vol 20 (8) ◽  
pp. 579-587 ◽  
Author(s):  
J ROHWEDEL
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Cell Cycle Distribution ◽  
Differentiation Capacity

High Glucose Affects the Cytotoxic Potential of Rapamycin, Metformin and Hydrogen Peroxide in Cultured Human Mesenchymal Stem Cells

2019 ◽  
Vol 19 (9) ◽  
pp. 688-698 ◽  
Author(s):  
Azam Roohi ◽  
Mahin Nikougoftar ◽  
Hamed Montazeri ◽  
Shadisadat Navabi ◽  
Fazel Shokri ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Hydrogen Peroxide ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Cell Viability ◽  
High Glucose ◽  
Cell Cycle Distribution ◽  
Efficient Treatment ◽  
Chronic Hyperglycemia ◽  
Placental Mesenchymal Stem Cells

Background: Oxidative stress and chronic hyperglycemia are two major side effects of type 2 diabetes affecting all cell types including mesenchymal stem cells (MSCs). As a cell therapy choice, understanding the behavior of MSCs will provide crucial information for efficient treatment. Methods: Placental mesenchymal stem cells were treated with various concentrations of glucose, metformin, rapamycin, and hydrogen peroxide to monitor their viability and cell cycle distribution. Cellular viability was examined via the MTT assay. Cell cycle distribution was studied by propidium iodide staining and apoptosis was determined using Annexin Vpropidium iodide staining and flow cytometry. Involvement of potential signaling pathways was evaluated by Western blotting for activation of Akt, P70S6K, and AMPK. Results: The results indicated that high glucose augmented cell viability and reduced metformin toxic potential. However, the hydrogen peroxide and rapamycin toxicities were exacerbated. Conclusion: Our findings suggest that high glucose concentration has a major effect on placental mesenchymal stem cell viability in the presence of rapamycin, metformin and hydrogen peroxide in culture.

scholarly journals Primordial Germ Cell-Like Cells Differentiated In Vitro from Skin-Derived Stem Cells

PLoS ONE ◽  
2009 ◽  
Vol 4 (12) ◽  
pp. e8263 ◽  
Author(s):  
Katja Linher ◽  
Paul Dyce ◽  
Julang Li
Keyword(s):  
Stem Cells ◽  
Germ Cell ◽  
Primordial Germ Cell

Primordial germ cell differentiation of nuclear transfer embryonic stem cells using surface modified electroconductive scaffolds

2016 ◽  
Vol 53 (4) ◽  
pp. 371-380
Author(s):  
Tarlan Eslami-Arshaghi ◽  
Saeid Vakilian ◽  
Ehsan Seyedjafari ◽  
Abdolreza Ardeshirylajimi ◽  
Masoud Soleimani ◽  
...  
Keyword(s):  
Stem Cells ◽  
Cell Differentiation ◽  
Embryonic Stem Cells ◽  
Germ Cell ◽  
Nuclear Transfer ◽  
Primordial Germ Cell ◽  
Embryonic Stem ◽  
Germ Cell Differentiation ◽  
Surface Modified

154 MOLECULAR CHARACTERIZATION OF CAT PRIMORDIAL GERM CELLS

2016 ◽  
Vol 28 (2) ◽  
pp. 207
Author(s):  
J. Galiguis ◽  
C. E. Pope ◽  
C. Dumas ◽  
G. Wang ◽  
R. A. MacLean ◽  
...  
Keyword(s):  
Stem Cells ◽  
Germ Cell ◽  
Germ Cells ◽  
Primordial Germ Cells ◽  
Primordial Germ Cell ◽  
Embryonic Stem ◽  
Transcript Abundance ◽  
Domestic Cat ◽  
Sample Type

As precursors to germline stem cells and gametes, there are many potential applications for primordial germ cells (PGC). Primordial germ cell-like cells have been generated from mouse embryonic stem cells and induced pluripotent stem cells, which subsequently were used to produce functional spermatozoa, oocytes, and healthy offspring (Hayashi et al. 2012 Science 338(6109), 971–975). Applying this approach to generate sperm and oocytes of endangered species is an appealing prospect. Detection of molecular markers associated with PGC is essential to optimizing the process of PGC induction. In the current study, in vitro-derived domestic cat embryos were assessed at various developmental stages to characterise the expression of markers related to the specification process of cat PGC. In vivo-matured, IVF oocytes were cultured until Days 7, 9, and 12 post-insemination. Then, embryos were assessed by RT-qPCR to determine relative transcript abundance of the pluripotency markers NANOG, POU5F1, and SOX2; the epiblast marker DNMT3B; the primitive endoderm marker GATA4; the PGC marker PRDM14; and the germ cell marker VASA; RPS19 was used as the internal reference gene. To validate the qPCR results, fibroblasts served as the negative control cells, whereas spermatogonial stem cells (SSC) served as the positive control cells for GATA4, PRDM14, and VASA. Total mRNA were isolated using the Cells-to-cDNA™ II Kit (Ambion/Thermo Fisher Scientific, Waltham, MA, USA) from either pools of 2 to 6 embryos or ~25 000 fibroblasts/SSC. A minimum of 2 biological replicates for each sample type was analysed, with transcript abundance detected in 2 technical replicates by SYBR Green chemistry. Student’s t-tests were performed on the ΔCts for statistical analysis. PRDM14, specific to the germ cell lineage, was detected as early as Day 7, suggesting the presence of PGC precursor cells. Compared with their levels at Day 7, PRDM14 expression was 0.34-fold lower in SSC (P < 0.05), whereas expression of VASA and GATA4 were 1964-fold and 144-fold higher, respectively (P < 0.05). This seems to emphasise the relative importance of PRDM14 in pre-germ cell stages. In general, all genes analysed were up-regulated from Day 7 to Day 9. This up-regulation was statistically significant for SOX2 and GATA4 (P < 0.05). Relative to that at Day 9, all transcripts were relatively less abundant at Day 12 (P < 0.05 for NANOG, POU5F1, SOX2, DNMT3B, and PRDM14). The data suggest that PGC specification takes place near Day 9, with peak specification activity concluding by Day 12. Although much needs be explored about PGC specification in the cat before applying induction and in vitro germ cell production techniques, these findings represent the first step towards a new potential strategy for preserving endangered and threatened felids.

scholarly journals Primordial germ cell-like cells derived from canine adipose mesenchymal stem cells

2016 ◽  
Vol 49 (4) ◽  
pp. 503-511 ◽  
Author(s):  
Yudong Wei ◽  
Jia Fang ◽  
Shufang Cai ◽  
Changrong Lv ◽  
Shiqiang Zhang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Adipose Mesenchymal Stem Cells

Aldehyde dehydrogenase activity in serous ovarian carcinoma.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e15577-e15577
Author(s):  
Petra M. Bareiss ◽  
Tanja N. Fehm ◽  
Anna Fischer ◽  
Matthias Grauer ◽  
Philipp Kokorsch ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Cancer Stem Cells ◽  
Ovarian Carcinoma ◽  
Aldehyde Dehydrogenase ◽  
Cell Cycle Distribution ◽  
Aldh Activity ◽  
Serous Ovarian Carcinoma ◽  
Aldh1 Expression

e15577 Background: Only specific subpopulations of tumor cells, so called cancer stem cells (CSC) may initiate and maintain tumors. The phenotype and molecular properties of ovarian CSC remain elusive. Aldehyde dehydrogenase (ALDH) activity characterizes (cancer) stem cells in different tissues and has been associated with ovarian CSC (Silva et al, 2011; Kryczek et al, 2012). Contradictory results have been reported on ALDH1 expression and prognosis in ovarian carcinoma. In this study, we explore the role of ALDH in serous ovarian carcinoma (SOC). Methods: Aldefluor-staining was used to assess ALDH activity in different ovarian carcinoma cell-lines and patient samples. ALDH+ and ALDH- cells isolated by FACS and ALDH1 versus control siRNA treated cells were analyzed in sphere forming, proliferation, BrdU and cell cycle assays. In vivo tumorigenicity assays including serial re-transplantations were performed in NOD/SCID/IL2Rγnull mice. ALDH1 and Ki67 expression were assessed immunohistochemically on a tissue microarray of 152 SOC samples. Results: ALDH+ cells formed more tumor spheres than ALDH- cells from the OVCAR-3 cell line and primary SOC and larger spheres (> 5.000 µm²) developed solely from ALDH+ cells. However, in vivo both cell fractions gave rise to tumors. Tumors contained both ALDH+ and ALDH- cells irrespective of the starting population. Notably, ALDH+ cells generated tumors more rapidly and induced larger tumors, suggesting a higher proliferative capacity. Immunohistochemical analysis of a larger cohort of SOC patients confirmed association of ALDH1 expression with the proliferation marker Ki67 (p=0.007). Surprisingly, co-stainings revealed that ALDH1 positive cells were mostly Ki67 negative and cell cycle synchronisation experiments using different agents showed ALDH induction in G0-enriched OVCAR-3 cells. However, inhibition of ALDH by treatment with three distinct siRNAs against ALDH1 did not alter cell cycle distribution. Conclusions: Our data suggest that ALDH is a correlative marker indicating, but not actively sustaining a quiescent stem-cell like state in SOC. Upon exit from G0, ALDH+ cells lose ALDH expression and induce a proliferative response.

scholarly journals The crucial role of Activin A on the formation of primordial germ cell-like cells from skin-derived stem cells in vitro

Cell Cycle ◽  
2015 ◽  
Vol 14 (19) ◽  
pp. 3016-3029 ◽  
Author(s):  
Rui Sun ◽  
Yuan-Chao Sun ◽  
Wei Ge ◽  
Hui Tan ◽  
Shun-Feng Cheng ◽  
...  
Keyword(s):  
Stem Cells ◽  
Germ Cell ◽  
Crucial Role ◽  
Primordial Germ Cell ◽  
Activin A

scholarly journals Skin-derived stem cells as a source of primordial germ cell- and oocyte-like cells

2016 ◽  
Vol 7 (11) ◽  
pp. e2471-e2471 ◽  
Author(s):  
Wei Ge ◽  
Shun-Feng Cheng ◽  
Paul W Dyce ◽  
Massimo De Felici ◽  
Wei Shen
Keyword(s):  
Stem Cells ◽  
Germ Cell ◽  
Primordial Germ Cell
Sign in / Sign up

Export Citation Format

Share Document