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Comparsion of Smad1 and Smad5 Dependent Transcript Profiles in Zebrafish

ABSTRACT: The BMP signaling pathway regulates multiple steps of hematopoiesis, mediated through receptor-regulated Smads, including Smad1 and Smad5. Here we use loss-of-function approaches in zebrafish to compare the roles of Smad1 and Smad5 during embryonic hematopoiesis. Microarray experiments revealed that the two proteins regulate redundantly the key initiators of the hemato-vascular program, including scl, lmo2, and gfi1. However, each also regulates a remarkably distinct genetic program, with Smad5 uniquely regulating the BMP signaling pathway itself. Our results suggest that specificity of BMP signaling output, with respect to hematopoiesis, can be explained by differential functions of Smad1 and Smad5. Keywords: Gene expression transcript profiles

ORGANISM(S): Danio rerio

PROVIDER: GSE8903 | GEO | 2008/08/22

SECONDARY ACCESSION(S): PRJNA102295

REPOSITORIES: GEO

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Comparsion of Smad1 and Smad5 Dependent Transcript Profiles in Zebrafish

Project description:The BMP signaling pathway regulates multiple steps of hematopoiesis, mediated through receptor-regulated Smads, including Smad1 and Smad5. Here we use loss-of-function approaches in zebrafish to compare the roles of Smad1 and Smad5 during embryonic hematopoiesis. Microarray experiments revealed that the two proteins regulate redundantly the key initiators of the hemato-vascular program, including scl, lmo2, and gfi1. However, each also regulates a remarkably distinct genetic program, with Smad5 uniquely regulating the BMP signaling pathway itself. Our results suggest that specificity of BMP signaling output, with respect to hematopoiesis, can be explained by differential functions of Smad1 and Smad5. Keywords: Gene expression transcript profiles The experiment was designed to identify the unique Smad1 and Smad5 dependent transcripts during the somitogenesis stage of development, during which mesoderm is specified to the hematopoietic lineage. Embryos were injected with translational blocking morpholinos for Smad1, Smad5 or both, and then collected at the 1-somite stage for RNA extraction. For every experiment control uninjected wildtype sibling embryo were also collected for comparison. Three biological replicates were done for each knockdown set. Total RNA was sent to Nimblegen for cDNA synthesis, dye labeling and hybridization. Single knockdown samples were hybridized to the Nimblegen 2006 Danio rerio Gene Expression Array chip and the double knockdown samples to the 2007 verison of the chip, which contains the same test genes, but with additional control oligos. Dye swaps were done for each set; for 2 of the 3 hybridization in each set Cy3 was the dye used for the experimental sample and in the 3rd Cy5 was used. The raw hybridization data was obtained from Nimblegen, normalized using NimbleScan and anaylzed using R software.

2010-06-25 | E-GEOD-8903 | biostudies-arrayexpress

Expression profiling for mouse embryonic stem cells deficient for Smad1 and Smad5 or for Bmp activated subpopulations.

Project description:In this study we determine the transcriptional profile by RNAseq of mESC in the absence of Smad1 and Smad5 and in subpopulation of mESC with different levels of BMP-SMAD activation.

2015-12-21 | GSE71554 | GEO

DNA methylation analysis for mouse embryonic stem cells deficient for Smad1 and Smad5 or for Bmp activated subpopulations.

Project description:In this study we determine the profile of DNA methylation by RRBseq of mESC in the absence of Smad1 and Smad5 and in subpopulation of mESC with different levels of BMP-SMAD activation. We observed a general loss of DNA methylation associated with low or absent BMP-SMAD signalling in mESCs.

2015-12-21 | GSE71555 | GEO

Smad1 and its target gene Wif1 coordinate BMP and Wnt signaling activities to regulate lung development

Project description:Bone morphogenetic protein 4 (BMP4) is essential for lung development. To define its intracellular signaling mechanisms by which BMP4 regulates lung development, BMP-specific Smad1 or Smad5 was selectively knocked out in fetal mouse lung epithelial cells. Abrogation of lung epithelial-specific Smad1, but not Smad5, resulted in retardation of lung branching morphogenesis and reduced sacculation, accompanied by altered distal lung epithelial cell proliferation and differentiation, and consequently severe neonatal respiratory failure. By combining cDNA microarray with ChIP-chip analyses, Wnt inhibitory factor-1 (Wif1) was identified as a novel target gene of Smad1 in the developing mouse lung epithelial cells. Loss of Smad1 transcriptional activation of Wif1 expression was associated with reduced Wif1 expression and increased Wnt/beta-catenin signaling activity in lung epithelia, resulting in specific fetal lung abnormalities. Therefore, a novel regulatory loop of BMP4-Smad1-Wif1-Wnt/beta-catenin in coordinating BMP and Wnt pathways to control fetal lung development is suggested. mRNA profiling: Total RNA was isolated from left lobe lungs of three pair of E18.5 wild type and Smad1 lung epithelium-specific conditional knockout mice

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Utilization of Tagged Transgenic Mouse Lines to Study the Molecular Roles of SMAD1/5 in Mediating Signaling Crosstalk During Early Pregnancy II

Project description:In this study, we generated two novel transgenic mouse lines with HA- or PA- affinity tags in the SMAD1 and SMAD5 loci (Smad1HA/HA and Smad5PA/PA) to define how these proteins integrate BMP signaling in the uterus during early pregnancy. Using CUT & RUN, we provided genomic evidence demonstrating the unique and shared roles of SMAD1 and SMAD5 during the window of implantation.

2024-02-29 | GSE237975 | GEO

Smad1 and its target gene Wif1 coordinate BMP and Wnt signaling activities to regulate lung development

2011-01-07 | GSE26502 | GEO

Gene expression profiling of Smad1/5 cKO and Acvr2a cKO mice

Project description:We generated mice with single or double conditional inactivation of SMAD1 and SMAD5 using progesterone receptor (PR) cre (Smad1flox/flox;Smad5flox/flox;Pgr-cre+/-, or “Smad1/5 cKO”). Female mice with single SMAD1 or SMAD5 deletion were subfertile, whereas Smad1/5 cKO were infertile and had no visible implantation sites at 4.5 days post-coitum (dpc), indicating functional redundancy of SMAD1 and SMAD5. Histological and molecular analyses of the Smad1/5 cKO uteri during pregnancy determined that the infertility was the result of impaired uterine receptivity. During the window of implantation, uteri of Smad1/5 cKO mice responded abnormally to estradiol (E2) and to progesterone (P4), retained luminal PR expression, and displayed cytoplasmic FOXO1 mis-localization. Furthermore, uteri of Smad1/5 cKO mice did not respond to an artificial decidual stimulus and the stroma failed to differentiate. To determine the cell surface receptor complex that controls BMP signaling during implantation, we generated mice with conditional deletion of Acvr2a and Acvr2b using Pgr-cre+/-. We determined that Acvr2b cKO females were subfertile, while Acvr2a cKOs were infertile and displayed a range of ovarian and uterine abnormalities, including endometrial and implantation defects that phenocopied those of Smad1/5 cKO mice. Transcriptomic profiling of the Smad1/5 cKO and Acvr2a cKO uterus showed that genes involved in epithelial cell remodeling and microvilli/ciliated cell function were overrepresented in both genotypes. These results demonstrate that BMP signals mediated via ACVR2A and SMAD1/5 control endometrial receptivity and embryo implantation by remodeling the apicobasal polarity of the epithelium during the window of implantation.

2021-04-23 | GSE152675 | GEO

Mouse embryonic stem cells deficient for Smad1 and Smad5 or for Bmp activated subpopulations.

Project description:Mouse embryonic stem cells deficient for Smad1 and Smad5 or for Bmp activated subpopulations.

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ZSWIM4 regulates early embryonic patterning and BMP signaling pathway by promoting nuclear Smad1 degradation

Project description:The dorsoventral gradient of BMP signaling plays an essential role in embryonic patterning, with high BMP signal activating ventral-lateral mesoderm markers directly, and low BMP signal inducing neural tissues. The Zinc finger SWIM domain-containing protein 4 (zswim4) is expressed in the dorsal blastopore lip at the onset of Xenopus gastrula and then enriched at the forming neuroectoderm at mid-gastrula stages. Overexpression of zswim4 in Xenopus embryos causes inhibition of the anterior axis and shortened, curved body, and knockdown or knockout of zswim4 disturbed embryonic body axis formation and head development. The expression of ventral-lateral mesoderm marker genes was reduced after zswim4 overexpression and increased in embryos with zswim4 knockdown. Neural marker genes were repressed in zswim4 morphant. Mechanistically Zswim4 attenuates BMP signal through reducing protein stability of Smad1 in both Xenopus embryos and HEK293T cells. Zswim4 interacts with Smad1 and promotes ubiquitination of Smad1 in HEK293T cells. To identify the interaction partner of Zswim4 in regulating Smad1 stability, we performed SILAC based IP in HEK293T cells, and the precipitates were analyzed by Mass Spectrometry.

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