Introduction of the TERT and BMI1 Genes into Murine Dermal Papilla Cells Ameliorates Hair Inductive Activity
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PROVIDER: PRJNA421158 | ENA |
REPOSITORIES: ENA
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Project description:Dermal papilla cells (DPCs) are located at the bottom of hair follicles and play important roles on hair induction by interacting with epidermal cells. DPCs are promising cell sources for hair regeneration therapy for alopecia patients. However, freshly isolated DPCs rapidly lose their hair inductive activity and proliferative potential under culture conditions. We examined the effects of telomere reverse transcriptase (TERT) and B-cell-specific Moloney murine leukemia virus insertion region 1 (BMI1) on extending the life span of murine DPCs as well as on hair inductive activity.TERT and BMI1 genes were introduced into murine DPCs using lentivirus vectors. Hair inductive activity of transfected DPCs (t-DPCs) was determined by in vivo chamber assay in nude mice. Transcripts between intact dermal papillae (DPs) and cultured DPCs were compared by microarray analysis.
2017-12-06 | GSE107702 | GEO
Project description:Dermal papilla cells isolated from the human hair follicle are capable of inducing hair growth in recipient epithelia. However, demonstrating disparity from rodent dermal papilla, human cells lose this inductive competance immediately upon growth in culture under normal growth conditions. We grew dermal papilla cells in hanging drop cultures that are morphologically akin to intact dermal papilla, and found that by enhancing the environment for aggregation, we could restore the inductive capacity of human dermal papilla cells in culture. The underlying genes that regulate the inductive potential of dermal papilla cells is not well understood, and we sought to use global profiling to identify key genes and pathways related to inductive competance within dermal papilla cells. We used Affymetrix microarrays to profile human dermal papilla cells in both hair inducing, and non-hair inducing states. Affymetrix microarrays were used to to perform profiling of human dermal papilla cells, both as intact tissues (freshly isolated from scalp), and at several stages in subsequent two dimensional culture; cell explant outgrowths (p0), cells at passage 1 (p1), passage 3 (p3) and passage 5 (p5). RNA was isolated from cultured cells 72 hours after feeding. Cells at passage 3 were also grown in hanging drops to form dermal spheroids, that were used for RNA collection 48 hours after establishment. All experiments were performed using tissue from three biological replicates (#D5, D6, D7),
2013-10-20 | E-GEOD-44765 | biostudies-arrayexpress
Project description:Dermal papilla cells isolated from the human hair follicle are capable of inducing hair growth in recipient epithelia. However, demonstrating disparity from rodent dermal papilla, human cells lose this inductive competance immediately upon growth in culture under normal growth conditions. We grew dermal papilla cells in hanging drop cultures that are morphologically akin to intact dermal papilla, and found that by enhancing the environment for aggregation, we could restore the inductive capacity of human dermal papilla cells in culture. The underlying genes that regulate the inductive potential of dermal papilla cells is not well understood, and we sought to use global profiling to identify key genes and pathways related to inductive competance within dermal papilla cells. We used Affymetrix microarrays to profile human dermal papilla cells in both hair inducing, and non-hair inducing states.
2013-10-20 | GSE44765 | GEO
Project description:Identification of BMI1, RYBP and H2AK119UB interactome in Glioblastoma (GBM) to elucidate BMI1 roles independent of the PRC1-complex in GBM.
2021-09-09 | PXD022057 | Pride
Project description:Alopecia is an exceedingly prevalent problem and lacks effective therapy. Recently, research has focused on early-passage dermal papilla cells (DPCs), which have hair inducing activity both in vivo and in vitro. Our previous study indicated that factors secreted from early-passage DPCs contribute to hair follicle (HF) regeneration. To identify which factors are responsible for HF regeneration and why late-passage DPCs lose this potential，we collected 48-h-culture medium (CM) from both of passage 3 and 9 DPCs and subcutaneously injected the DPC-CM into NU/NU mice. Passage 3 DPC-CM induced HF regeneration, based on the emergence of a white hair coat, but passage 9 DPC-CM not. In order to identify the key factors responsible for hair inductive capacity, CM from passage 3 and 9 DPCs was analyzed by iTRAQ-based quantitative proteomic technology. We identified 1360 proteins, of which 213 proteins were differentially expressed between CM from early-passage vs. late-passage DPCs, including SDF1, MMP3, biglycan and LTBP1.Further analysis indicated that the differentially-expressed proteins regulated the Wnt, TGF-β and BMP signaling pathways, which directly and indirectly participate in HF morphogenesis and regeneration. Subsequently, we selected 19 proteins for further verification by multiple reaction monitoring (MRM) between the two types of CM. These results would be used to identify the key factors for inducing HF regeneration and reveal the molecular mechanisms of losing inductive ability of DPCs. Furthermore, it is possible to explore some drugs for alopecia in the clinic according to this secretome date analysis.
2018-10-26 | PXD004201 | Pride
Project description:Using microcell-mediated chromosome transfer (MMCT) into the mouse melanoma cell line, B16F10, we have previously found that human chromosome 5 carries a gene, or genes, that can negatively regulate TERT expression. To identify the gene responsible for the regulation of TERT transcription, we performed cDNA microarray analysis using parental B16F10 cells, telomerase negative B16F10 microcell hybrids with a human chromosome 5 (B16F10MH5), and its revertant clones (MH5R) with reactivated telomerase. Here we report the identification of PITX1, whose restoration leads to the downregulation of mouse tert (mtert) transcription, as a TERT suppressor gene. Additionally, both human TERT (hTERT) and mouse TERT (mtert) promoter activity can be suppressed by PITX1. We showed that three and one binding sites, respectively, within the hTERT and mtert promoters that express a unique conserved region are responsible for the transcriptional activation of TERT. Furthermore, we showed that PITX1 binds to the TERT promoter both in vitro and in vivo. Thus, PITX1 suppresses TERT transcription through direct binding to the TERT promoter, which ultimately regulates telomerase activity.
2010-09-10 | GSE23216 | GEO
Project description:Transcriptional profiling of ProEs purified from wild type and Bmi1-/- mice. Two-condition experiment, WT vs. Bmi1-/- ProEs. Biological replicates: 3 WT replicates, 3 Bmi1-/- replicates.
2014-11-18 | E-GEOD-63413 | biostudies-arrayexpress
Project description:To explore the potential targets of Bmi1 in the liver development of hepatic carcinogenesis, we assayed the gene expression level in the liver of Bmi1 knockout mice. We isolated the liver tissue of Bmi1 WT and KO mice around 6-8 weeks. Then we extracted total RNA and run the microarray detection. Gene expression in Bmi1 KO mouse livers was compared with that in Bmi1 WT mouse livers to screen potential targets of Bmi1.
2018-03-29 | GSE97170 | GEO
Project description:Transcriptional profiling of Bmi1 mutant dental epithelia including the stem cell compartment to determine which genes are upregulated in response to loss of Bmi1.
2013-04-12 | GSE45999 | GEO
Project description:Background: The mesenchymal compartment plays a key role in organogenesis and cells within the mesenchyme/stroma are a source of potent molecules that control epithelia during development and tumourigenesis. We have used Serial Analysis of Gene Expression (SAGE) to profile a key subset of prostatic mesenchyme that regulates prostate development and is enriched for growth-regulatory molecules. Results: SAGE libraries were made of prostatic inductive mesenchyme (VMP) and the complete prostatic rudiment (including inductive mesenchyme, epithelium and smooth muscle; VSU). By comparing these two SAGE libraries we generated a list of 219 transcripts that were enriched or specific to inductive mesenchyme and which may act as mesenchymal regulators of organogenesis and tumourigenesis. Conclusions: The use of a precisely defined subset of cells, and a back-comparison approach, allowed us to identify rare mRNAs that might be overlooked using other approaches. Keywords: SAGE, gene profiling Two SAGE libraries were prepared and compared to each other. The VMP forms a subset of the VSU.
2007-12-20 | E-GEOD-7899 | biostudies-arrayexpress