Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA340168 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Multipotent spermatogonial stem cells (mSSCs) derived from SSCs are a potential new source of individualized pluripotent cells in regenerate medicine such as ESCs. We hypothesized that the culture-induced reprogramming of SSCs was mediated by a mechanism different from that of iPS, and was due to up-regulation of specific pluripotency-related genes during cultivation. Through a comparative analysis of expression profile data, we try to find cell reprogramming candidate factors from mouse spermatogonial stem cells. We used microarrays to analyze the gene expression profiles of culture-induced reprogramming converting unipotent spermatogonial stem cells to pluripotent spermatogonial stem cells. Three types of spermatogonial stem cells were mechanically collected according to morphological criteria for RNA extraction and hybridization on Affymetrix microarrays.
2015-10-30 | E-GEOD-74151 | biostudies-arrayexpress
Project description:Multipotent spermatogonial stem cells (mSSCs) derived from SSCs are a potential new source of individualized pluripotent cells in regenerate medicine such as ESCs. We hypothesized that the culture-induced reprogramming of SSCs was mediated by a mechanism different from that of iPS, and was due to up-regulation of specific pluripotency-related genes during cultivation. Through a comparative analysis of expression profile data, we try to find cell reprogramming candidate factors from mouse spermatogonial stem cells. We used microarrays to analyze the gene expression profiles of culture-induced reprogramming converting unipotent spermatogonial stem cells to pluripotent spermatogonial stem cells.
2015-10-30 | GSE74151 | GEO
Project description:Mammalian spermatogonial stem cells (SSCs) spontaneously convert to multipotent adult spermatogonial-derived stem cells (MASCs) during in vitro expansion. Here, we examine the epigenetic signature of SSCs and MASCs, identifying bivalent histone H3-lysine4 and -lysine27 trimethylation at somatic gene promoters in SSCs and an ESC-like promoter chromatin state in MASCs.
2016-04-21 | GSE78129 | GEO
Project description:Mammalian spermatogonial stem cells (SSCs) spontaneously convert to multipotent adult spermatogonial-derived stem cells (MASCs) during in vitro expansion. Here, we examine the epigenetic signature of SSCs and MASCs, identifying bivalent histone H3-lysine4 and -lysine27 trimethylation at somatic gene promoters in SSCs and an ESC-like promoter chromatin state in MASCs.
2016-04-21 | GSE78127 | GEO
Project description:Spermatogonial stem cells (SSCs) can spontaneously dedifferentiate into embryonic stem cell (ESC)-like cells, which are designated as multipotent SSCs (mSSCs), without ectopic expression of reprogramming factors. SSCs express key OSKM reprogramming factors at some levels, and do not require ectopic expression of any gene for the acquisition of pluripotency during reprogramming to mSSCs. Therefore, we reasoned that additional factors are required to regulate SSC reprogramming. In this study, we first compared the expression of reprogramming signature genes among somatic cells, iPSC, SSCs, mSSCs, and partially reprogramed cells, and found that they appear to have similar pluripotency states, whereas their transcriptional program differs. We developed a systems biology approach to prioritise genes for pluripotency regulatory factors by integrating transcriptome and interactome data on the genome-wide functional network. Then, we performed a series of systematic gene prioritisation steps and identified 53 candidates, which included some known reprogramming factors. We experimentally validated one particular candidate, Positive cofactor 4 (Pc4), which was expressed in PSCs and yielded a positive RNA interference (RNAi) response in an Oct4 reporter assay. We demonstrated that Pc4 enhanced the efficiency of OSKM-mediated reprogramming by promoting the transcriptional activity of key pluripotency factors, and by regulating the expression of many protein- and miRNA-encoding genes involved in reprogramming and somatic cell-specific genes. Pc4-overexpressing mESC lines were established by Venus (YFP)-expressing lentiviral transfection. The mESCs were split at a density of 2 ´ 104 cells onto fresh MEF feeder cells seeded into a 6 well dish (containing mESC growth medium) with virus particles, and 25 μg/ml polybrene (Sigma Aldrich) was added. After 24 h, the medium was replaced with fresh growth medium. After 4 days later, mESC colonies expressing YFP were picked and replated. Three different Pc4-overexpressing mESC lines were established.
2015-10-30 | E-GEOD-74149 | biostudies-arrayexpress
Project description:<p>Spermatogonial stem cells (SSCs) possess the capacity for spontaneous reprogramming during in vitro culture, while the underlying mechanisms remain poorly understood, especially why addition of epidermal growth factor (EGF), leukemia inhibitory factor (LIF) remarkably enhanced transition efficiency. Here we employed a multi-omics approach, integrating transcriptomics, metabolomics, and DNA methylation analyses to focus on the interplay between exogenous growth factors, metabolic pathways, and signaling cascades, particularly the role of SMAD3 in these networks. Our findings reveal that SSC reprogramming is contingent upon a metabolic shift from the tricarboxylic acid (TCA) cycle to aerobic glycolysis, modulated by fluctuating SMAD3 levels. SMAD3 downregulation activates HIF-1α, inducing aerobic glycolysis to supply energy and substrates for reprogramming. Subsequent SMAD3 reactivation promotes rapid cell proliferation, facilitating successful reprogramming. This study elucidates the pivotal role of SMAD3 in modulating glycometabolic pathways driving SSC transformation, emphasizing the necessity of aerobic glycolysis following SMAD3 fluctuations for effective reprogramming, which provides novel insights into the intricate interplay between energy metabolism and stem cell plasticity and potential applications in regenerative medicine and fertility treatments.</p>
2025-07-08 | MTBLS12698 | MetaboLights
Project description:To explore the regulatory network involving RNF187 binding proteins, immunocoprecipitation (IP) experiments were performed in human spermatogonial stem cells (SSCs) via LC-MS/MS analysis and Label-free quantification.
2025-10-20 | PXD060599 | Pride
Project description:Spermatogonial stem cells (SSCs) can spontaneously dedifferentiate into embryonic stem cell (ESC)-like cells, which are designated as multipotent SSCs (mSSCs), without ectopic expression of reprogramming factors. SSCs express key OSKM reprogramming factors at some levels, and do not require ectopic expression of any gene for the acquisition of pluripotency during reprogramming to mSSCs. Therefore, we reasoned that additional factors are required to regulate SSC reprogramming. In this study, we first compared the expression of reprogramming signature genes among somatic cells, iPSC, SSCs, mSSCs, and partially reprogramed cells, and found that they appear to have similar pluripotency states, whereas their transcriptional program differs. We developed a systems biology approach to prioritise genes for pluripotency regulatory factors by integrating transcriptome and interactome data on the genome-wide functional network. Then, we performed a series of systematic gene prioritisation steps and identified 53 candidates, which included some known reprogramming factors. We experimentally validated one particular candidate, Positive cofactor 4 (Pc4), which was expressed in PSCs and yielded a positive RNA interference (RNAi) response in an Oct4 reporter assay. We demonstrated that Pc4 enhanced the efficiency of OSKM-mediated reprogramming by promoting the transcriptional activity of key pluripotency factors, and by regulating the expression of many protein- and miRNA-encoding genes involved in reprogramming and somatic cell-specific genes.
2015-10-30 | GSE74149 | GEO
Project description:Spermatogonial stem cells (SSCs) could transform into pluripotent state in long term culture without introduction of exogenous factors. And p53 deficiency rescued SSCs from extensive cell apoptosis during transformation induced by rewriting of methylation profiles in SSCs. Notably, p53 is believed as a key bottle-neck for reprogramming. Based on these studies, we compared the difference of chromatin accessibility between SSCs from wild type and p53 deficient SSCs mice using ATAC-seq, to explore the potential mechanism at chromosome level. And RNA-Seq was subsequently exerted to verify the predicted genes and related pathways in SSCs transformation. This result further reveals the role of p53 in regulating SSCs fates, which provide hints new insight for understanding the biological characteristics of germline stem cells, basic and clinic researchand molecular mechanisms of reprogramming and tumorigenesis.
2021-10-08 | E-MTAB-10013 | biostudies-arrayexpress
Project description:Spermatogonial stem cells (SSCs) could transform into pluripotent state in long term culture without introduction of exogenous factors. And p53 deficiency rescued SSCs from extensive cell apoptosis during transformation induced by rewriting of methylation profiles in SSCs. Notably, p53 is believed as a key bottle-neck for reprogramming. Based on these studies, we compared the difference of chromatin accessibility between SSCs from wild type and p53 deficient SSCs mice using ATAC-seq, to explore the potential mechanism at chromosome level. And RNA-Seq was subsequently exerted to verify the predicted genes and related pathways in SSCs transformation. This result further reveals the role of p53 in regulating SSCs fates, which provide hints new insight for understanding the biological characteristics of germline stem cells, basic and clinic researchand molecular mechanisms of reprogramming and tumorigenesis.
2021-10-08 | E-MTAB-10012 | biostudies-arrayexpress