Bulk RNA-sequencing of mRNA from Sertoli cells isolated by a novel single cell suspension protocol and FACS-sorting
Ontology highlight
ABSTRACT:
INSTRUMENT(S): NextSeq 500
ORGANISM(S): Mus musculus
SUBMITTER: Dominik Filipp
PROVIDER: E-MTAB-11895 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:Mammalian spermatogenesis is a complex biological process that occurs within a highly organized tissue, the seminiferous epithelium. The coordinated maturation of spermatogonia, spermatocytes and spermatids suggests the existence of precise programs of gene expression in these cells as well as in their neighboring somatic Sertoli cells. The objective of this study was to elucidate genes encoding the proteins that execute these programs. Rat seminiferous tubules at stages I, II-III, IV-V, VI, VIIa,b, VIIc,d, VIII, IX-XI, XII, XIII-XIV of the cycle were isolated by microdissection and Sertoli cells, spermatogonia plus early spermatocytes, pachytene spermatocytes and spermatids were purified from enzymatically-dispersed testes. Microarray analysis using Rat Genome 230 2.0 arrays identified a total of 16,971 probe sets that recognized transcripts. A comparison with the transcriptome of other tissues identified 398 testis-specific probe sets, which therefore are potential targets for the development of new contraceptives. Sequential waves of cell and stage-specific gene expression are associated with progression of germ cells through the stages of the cycle of the seminiferous epithelium and 1612 probe sets recognized transcripts whose expressions varied at least 4-fold across the stages of the cycle. Pathway analyses reveal that entire biological processes are regulated cyclically in testicular cells. Important among these are cell cycle and DNA repair. Thus, stage-specific gene expression is a widespread and fundamental characteristic of spermatogenic cells and Sertoli cells. Experiment Overall Design: Seminiferous tubules at the following stages or groups of stages were isolated by transillumination-assisted microdissection: I, II-III, IV-V, VI, VIIa,b, VIIc,d, VIII, IX-XI, XII, XIII-XIV. Twenty-five segments of tubules, 2 m in length, were collected at each stage or group of stages from each rat. Tubules from two separate animals were pooled to form one sample from each stage or groups of stages. A total of 5 independent samples per stage or groups of stages were analyzed. Mature Sertoli cells were isolated to about 85% purity (n=4). Three groups of germ cells were isolated by centrifugal elutriation from enzyme-dispersed testes: round spermatids (n=4), pachytene spermatocytes (n=4) and spermatogonia plus early spermatocytes (n=3) . Purity of these cells has been shown to vary between 85% to 95%
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Project description:To elucidate the role(s) of WNT/CTNNB1 signaling in the testis, transgenic Ctnnb1 tm1Mmt/+;Amhr2 tm3(cre)Bhr/+ mice were generated to obtain sustained activation of the WNT/CTNNB1 pathway in Sertoli cells. Male Ctnnb1 tm1Mmt/+;Amhr2 tm3(cre)Bhr/+ mice were sterile because of testicular atrophy starting at 5 wk of age, associated with degeneration of seminiferous tubules and the progressive loss of germ cells. Sustained WNT/CTNNB1 pathway activation was obtained in Ctnnb1 tm1Mmt/+;Amhr2 tm3(cre)Bhr/+ Sertoli cells. Sertoli cells often exhibited morphological characteristics suggestive of incomplete differentiation that appeared in a manner coincident with germ cell loss, accompanied by an increase in the expression of the immature Sertoli cell marker AMH. Microarray analyses performed on cultured Sertoli cells showed that CTNNB1 induces the expression of genes associated with the female sex determination pathway as well as cell-cycle associated genes . Together, these data suggest that the WNT/CTNNB1 pathway regulates Sertoli cell functions critical to their capacity to support spermatogenesis and to proliferate in the postnatal testis. Sertoli cells were obtained from 3wks-old Ctnnb1(tm1Mmt/tm1Mmt) mice. Cells were infected with adenoviruses to express eGFP or Cre in serum-free medium, and subsequently harvested for RNA extraction. Preliminary experiments demonstrated that an infection efficiency of nearly 100% could be obtained at an MOI of 50 (as determined by analysis of fluorescent signal in Ad-eGFP-infected cells) and that the Ad-Cre virus produced complete recombination of the floxed Ctnnb1 allele after 12 hours. Microaaray analyses were done using triplicate RNA samples from each adenoviral treatment using MouseRef-6 v.2.0 expression BeadChips technology (Illumina, San Diego, CA).
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Project description:To compare the the genomic profile of MEFs, immature Sertoli, mature Sertoli cells, and MEFs (NWD) after infection of Nr5a1, Wt1 and Dmrt1 after 1 month of dox exposure. MEFs (NWD) were infected with Nr5a1, Wt1 and Dmrt1 and were exposed to dox for 1 month. MEFs, immature Sertoli and mature Sertoli cells were cultured for 3 days and collected
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Project description:The Wilms tumor gene, Wt1, is specifically expressed in Sertoli cells (SCs) which support spermatogenesis. Germ cell loss was found in Wt1 knockout mice. In vitro studies demonstrated that Wt1 was essential for cell polarity maintenance in SCs. We used Digital Gene Expression Tag Profiling to detail the global programme of gene expression after Wt1 deletion in sertoli cell and identified 710 gene expression level change more than 2 times. Digital Gene Expression Tag Profiling analysis were performed using mRNA from control and Wt1-deficient Primary Sertoli cells, every group primare sertoli cell were from more than 30 mice.
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Project description:To compare the transcriptional profile of endogenous Sertoli cells from different Stage of Sertoli cell development (embryonic, immature, mature) to the transcriptionla profile of induced embryonic Sertoli cells derived from MEFs or TTFs we employed the agilent whole genome microarray Keywords: Expression profiling by array The following samples were analyzed in duplicates (MEFs, TTFs, ieSCs (derived from MEFs), ieSCs (derived from TTFs), 14.5 dpc male gonad, immature Sertoli (19 dpc embryo testis) and mature (8 week-old mouse testis))
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| phs001777 | dbGaP