Adipose-derived stem cells improved mouse ovary function after chemotherapy-induced ovary failure
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
SUBMITTER: Min Sun
PROVIDER: E-GEOD-47741 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:ADSCs are a new type of MSC that is typically abundant in individuals. Numerous investigations reported that adipose-derived stem cell (ADSC) transplantation could ameliorate the structure and function of injured tissues. However, their protective role in premature ovarian failure remains obscure. The aim of this study was to explore the therapeutic efficacy of ADSC transplantation for chemotherapy-induced ovarian damage and microarray analyses were used to assess gene related to ovarian function.
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Project description:Adipogenesis occurs through a specific gene program in undifferentiated fat progenitors. We hypothesized that the properties of the fat progenitors are regulated by hox genes, the developmental genes essential in different tissue stem cells. Their biased expression in white and brown fat implies roles in distinguishing the two fat types. Among 39 Hox genes, Hoxc8 is highly enriched in undifferentiated adipose tissue stem cells (ADSCs) and down-regulated in differentiated adipocytes. Forced expression of Hoxc8 suppressed adipocyte differentiation of ADSCs. Using microarrays, we investigated the effect of Hoxc8 overexpression on global transcripts in ADSCs. We compared among four groups: untreated ADSCs, adipogenic induction media (MDI)-treated ADSCs, MDI-treated ADSC-vector and MDI-treated ADSC-Hoxc8. A number of, but not all, adipogenesis-related genes are suppressed by Hoxc8. This dataset illustrates the global effect of Hoxc8, a developmental transcription factor, on the expression of adipogenesis-related genes. Gene expression was compared among untreated ADSCs (control), adipogenic induction media-treated ADSCs, adipogenic induction media-treated ADSC-vector (ADSCs transduced with control vector), and adipogenic induction media-treated ADSC-Hoxc8 (ADSCs transduced with human Hoxc8). Total RNA was isolated from ADSCs using the Qiagen RNeasy kit (Qiagen). At NimbleGen, quality and yield were verified before cDNA synthesis and Cy3-end labeling. The labeled cDNA samples were hybridized to Homo sapiens 4-Plex arrays (Roche NimbleGen, A4487001-00-01) that represent 24,000 human genes. Raw data files for each sample were normalized and background-corrected using a Robust Multi-Array Analysis as implemented by NimbleScan software. Students’ two-tail t-tests were conducted among the samples for each transcript and fold-change was determined. Transcripts whose abundance was significantly altered (P < 0.05) and an absolute fold change greater than 2 were defined as differentially regulated.
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Project description:Pak1 as a serine/threonine kinase, has been implicated in cytoskeletal remodelling, cell motility, apoptosis and transformation. Pak1 plays important roles in multiple signal pathways. Pak1 protects cells from apoptosis through at least three different pathways including forkhead box O1 (FOXO1), B-cell CLL/lymphoma 2 (Bcl-2) and DLC1. Pak1 also regulates activity of Raf and Aurora kinases to affect cellular proliferation. Overexpression of Pak1 is involved in the regulation of actin assembly and disassembly through phosphorylations of LIM Kinase and cytoskeletal associated proteins such as Filamin A, Paxillin, Caldesmon, Cortactin and Arp2/3. Pak1 also regulates microtubule dynamics via activation of tubulin cofactor B (TCoB) and DLC1, and inhibition of stathmin. In spite of a large body of work about the mechanism of Pak1 action in cancer, it remains unknown whether Pak1 signaling could potentially regulate the biology of regulatory miRNAs. This is particularly relevant for gastric cancer because Pak1 can activate many regulators of miRNAs expression in gastric cancer cells including NF-kappaB and ERK, and Pak1 signaling has profound phenotypic effects on the biology of gastric cancer cells. We constructed Pak1 knockdown stable cell lines. The stable Pak1 knockdown gastric cancer BGC823 cells and control cells were performed miRNA chip analysis by CapitalBio company. Gastric cancer BGC823 cells with stable Pak1 knockdown and BGC-823 gastric cancer cells transfected with U6 were used in this experiment. Total RNA was extracted by trizol,Here we use a Capitalbio mammal microRNA V3.0(CapitalBio, Beijing, China) containing 509 well-characterized human, mouse and rat miRNAs and various controls to profile the expression levels of miRNA in 16 and conU6 group.three chip were test in each group, and the procedure was repeated twice.
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Project description:Pluripotent stem cells can be induced from somatic cells, providing an unlimited cell resource for regenerative medicine. However, genetic manipulation and difficult-to-manufacture strategies used in reprogramming limit their clinical applications. Here, we show pluripotency can be induced from mouse somatic cells by specific small-molecule compounds. The completely chemically-induced pluripotent stem cells (CiPSCs) can be stably maintained in embryonic stem cell (ESC) culture medium and resemble ESCs in terms of their gene expression profiles, epigenetic status, and potential for differentiation and germline transmission. These findings suggest that exogenous master genes are dispensable for cell fate reprogramming and pave the way for the clinical application of somatic reprogramming techniques. Pluripotent stem cells can be induced from somatic cells, providing an unlimited cell resource for regenerative medicine. However, genetic manipulation and difficult-to-manufacture strategies used in reprogramming limit their clinical applications. Here, we show pluripotency can be induced from mouse somatic cells by specific small-molecule compounds. The completely chemically-induced pluripotent stem cells (CiPSCs) can be stably maintained in embryonic stem cell (ESC) culture medium and resemble ESCs in terms of their gene expression profiles, epigenetic status, and potential for differentiation and germline transmission. These findings suggest that exogenous master genes are dispensable for cell fate reprogramming and pave the way for the clinical application of somatic reprogramming techniques. Chemicals' acronyms: V, VPA; C, CHIR; 6, 616452; T, tranylcypromine; F, FSK; Z, DZNep; P, PGE2; R, RG108; S, SRT1720; M, 2-Me-5HT; D, D4476; B, Sodium butyrate. To compare the global gene expression pofile of mouse embryonic fibroblasts (MEFs), mouse adult lung fibroblasts (MAFs), mouse neonatal fibroblasts (MNFs), adipose-derived stem cells (ADSCs), chemical induced pluripotent stem cells (CiPS), embryonic stem cells (ESCs) and OSKM-iPSCs. We profiled the mRNA expression of each sample by microarray (Mouse OneArray® v2, Phalanx). Different sample set was normalized for different purpose. Set1: MEFs1, CiPS34, MNF CIPS7, CiPS50 CiPS21, OSKM-iPS1 and ESCs1 were analyzed, each sample have three replicates; Set2: MNFs, MAFs, ADSCs, MNF CiPS1, MAF CiPS3, CiPS45, ADSC CiPS2, OSKM iPS2 and ESCs2 were analyzed, each sample have three replicates; Set3: WT MEFs, ESCs3, CiPS WT1 and CiPS WT2 were analyzed, each sample have two replicates; Set4: MEFs2, SKM-FSK1, SKM-FSK2 and ESCs4 were analyzed, each sample have three replicates; Set5: MEFs3, ESCs5, CiPSCs, D12, D20 and D32 were analyzed, each sample have two replicates.
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Project description:TGF-β is a crucial cytokine participate in the interplay between the intermediate host and helminthes. TGF-β receptors were discovered in many cestode, and could bind the human TGF-β. However, the function of host TGF-β on the Echinococcus is still not elucidated, and this paper aim to explore the question at transcription level. Microarray analysis was used to investigate differential expression genes in protoscolices of Echinococcus granulosus cultured in the presence or absence of human TGF-β at different time points (4h, 8h and 24h) in vitro. A total of 523 genes were up- or down-regulated in response to TGF-β, compared with control group, 390 genes were up-regulated and 47 genes were down-regulated at 8h, and 376 genes were up-regulated and 19 genes were down-regulated at 12h, including 310 differential genes were regulated at both time point. Only 1 gene down-regulated at 4 h. Gene ontology (GO) analysis showed that the biological process of the up-regulated genes in protoscolex were predominantly involved in DNA packaging, nucleosome assembly, chromatin assembly, etc. And the cellular component gene were located in cell nucleus. TGF-β appeared to promote growth or development of the protoscolex by up-regulated the gene related with mitosis. In addition, the study also indicated that TGF-β has a multiple influence on the protoscolex, as reflected in the increased stimulation of gene expression of the ErbB signaling pathway, MAPK signaling pathway, Notch signaling pathway and VEGF signaling pathway. Isolated E. granulosus protoscoleces were treated with human TGF-β at different time points (4h, 8h and 24h) in vitro, and replicated 3 times. Each samples independently grown and harvested. And was extracted of total RNA using the TRIZOL Reagent according to the manufacturer's instructions. Gene-expression profiling was performed for each RNA sample separately on the GeneChip of Echinococcus granulosus Genome Array (Capitalbio) at CapitalBio Corporation (Beijing, China). The reference samples are protoscoleces treated by human TGF-β(0 h)
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