Results 31 to 40 of about 213 (102)

The niche-derived glial cell line-derived neurotrophic factor (GDNF) induces migration of mouse spermatogonial stem/progenitor cells. [PDF]

open access: yesPLoS ONE, 2013
In mammals, the biological activity of the stem/progenitor compartment sustains production of mature gametes through spermatogenesis. Spermatogonial stem cells and their progeny belong to the class of undifferentiated spermatogonia, a germ cell ...
Lisa Dovere   +8 more
doaj   +1 more source

Beyond stem cells: Commitment of progenitor cells to meiosis

open access: yesStem Cell Research, 2018
The first step in established spermatogenesis is the production of progenitor cells by the stem cell population. The progenitor cells (undifferentiated A spermatogonia) expand in number via the formation of syncytial chains by mitosis.
Michael D. Griswold, Cathryn Hogarth
doaj   +1 more source

The essential roles of M ps 1 in spermatogenesis and fertility in mice

open access: yesCell Death and Disease, 2021
Monopolar spindle 1 (MPS1), which plays a critical role in somatic mitosis, has also been revealed to be essential for meiosis I in oocytes. Spermatogenesis is an important process involving successive mitosis and meiosis, but the function of MPS1 in ...
Qiang Fang   +8 more
doaj   +1 more source

Differential roles of cyclooxygenase enzymes in the regulation of murine juvenile undifferentiated spermatogonia

open access: yesAndrology, 2023
AbstractBackgroundAcetaminophen and ibuprofen are widely administered to babies due to their presumed safety as over‐the‐counter drugs. However, no reports exist on the effects of cyclooxygenase inhibitors on undifferentiated spermatogonia and spermatogonial stem cells.
Amy Tran‐Guzman   +2 more
openaire   +2 more sources

DDX5 plays essential transcriptional and post-transcriptional roles in the maintenance and function of spermatogonia

open access: yesNature Communications, 2019
Sustained sperm production is dependent on activity of undifferentiated spermatogonia. Here, the authors demonstrate an essential role for RNA helicase DDX5 in maintenance of spermatogonia in adults through control of gene transcription plus RNA ...
Julien M. D. Legrand   +6 more
doaj   +1 more source

CG6015 controls spermatogonia transit-amplifying divisions by epidermal growth factor receptor signaling in Drosophila testes

open access: yesCell Death and Disease, 2021
Spermatogonia transit-amplifying (TA) divisions are crucial for the differentiation of germline stem cell daughters. However, the underlying mechanism is largely unknown.
Jun Yu   +9 more
doaj   +1 more source

Conservation of spermatogonial stem cell marker expression in undifferentiated felid spermatogonia [PDF]

open access: yesTheriogenology, 2016
Spermatogonial stem cells (SSCs) are distinct in their ability to self-renew, transmit genetic information, and persist throughout the life of an individual. These characteristics make SSCs a useful tool for addressing diverse challenges such as efficient transgenic production in nonrodent, biomedical animal models, or preservation of the male genome ...
Lindsey M, Vansandt   +5 more
openaire   +2 more sources

Recent Update on Retinoic Acid-Driven Initiation of Spermatogonial Differentiation

open access: yesFrontiers in Cell and Developmental Biology, 2022
Germ cells (Gc) propagate the genetic information to subsequent generations. Diploid (2n) Gc get transformed to specialized haploid (n) gametes by mitotic and meiotic divisions in adult gonads.
Indrashis Bhattacharya   +5 more
doaj   +1 more source

Mitochondrial fusion is required for spermatogonial differentiation and meiosis

open access: yeseLife, 2019
Differentiating cells tailor their metabolism to fulfill their specialized functions. We examined whether mitochondrial fusion is important for metabolic tailoring during spermatogenesis.
Grigor Varuzhanyan   +6 more
doaj   +1 more source

Nutrient restriction synergizes with retinoic acid to induce mammalian meiotic initiation in vitro

open access: yesNature Communications, 2021
Retinoic acid is necessary but not sufficient to induce meiosis. Here, the authors use primary mouse undifferentiated spermatogonia culture to show that nutrient restriction, an inducer of yeast meiosis, combined with retinoic acid induces meiotic gene ...
Xiaoyu Zhang   +2 more
doaj   +1 more source

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