Overactivation of wound healing-associated TGF-beta responses in EZH2-deficient decidual stromal cells.
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ABSTRACT:
PROVIDER: PRJNA720660 | ENA |
REPOSITORIES: ENA
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Project description:Our objective was to identify genes upregulated by TGF-beta in control and Ezh2 cKO decidual stromal cells (DSCs), and to compare this set of genes with a previously identified gene set of H3K27me3-marked decidual genes that are putatively silenced by EZH2/PRC2 (Nancy et al. JCI. 2018). We also wanted to assess baseline (BL) gene expression in control and Ezh2 cKO DSCs, and compare it to an RNA-seq analysis of differential gene expression in whole tissue Ezh2 cKO and control decidua. RNA was isolated from untreated and TGF-beta treated decidual stromal cells from control and Ezh2 cKO mice. Sequencing provided was 706 million total reads with an average of 82.2% of these reads aligning uniquely to the mouse genome. Reads uniquely mapped to known mRNAs were used to identify gene expression changes between housing conditions using DESeq2. TGF-beta induced 638 protein-coding genes in EZH2-deficient DSCs versus 480 in control DSCs (with a 295 gene overlap), demonstrating that EZH2-deficient DSCs are transcriptionally more responsive to TGF- (P=0.0025, Fisher’s exact test). Within the 638 genes, activated fibroblast signature genes were highly over-represented. TGF-target genes were 2.7-fold over-represented within the set of genes with higher expression in EZH2-deficient DSCs at baseline (BL; i.e., when neither EZH2-deficient nor control DSCs were treated with TGF-beta; P<1x10-20) . 741 genes were overexpressed in Ezh2 cKO DSCs compared to control DSCs, and 904 genes were underexpressed. Moreover, by comparing to our laboratory's previous CHIP-Seq analysis (Nancy et al. JCI 2018), we noted that genes overexpressed in cKO mice were enriched in previously identified H3K27me3-marked genes (P<1x10-26).
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Project description:Urinary bladder wound healing is today pooorly chracterized. MicroRNAs are small non-coding RNA molecules with regulatory functions. In this study we aimed at identifying microRNAs expressed during bladder wound healing. We performed Affymetrix microRNA profiling of the rodent urinary bladder during healing of a surgically created wound.
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Project description:Broad deregulation of fibroblast activation and wound healing genes within Ezh2 cKO decidua.
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Project description:Our objective was to identify genes differentially expressed between control and Ezh2 cKO decidua, and to compare this set of genes with a previously identified gene set of H3K27me3-marked decidual genes that are putatively silenced by EZH2/PRC2 (Nancy et al. JCI. 2018). RNA was isolated from whole tissue decidua and myometrium of control and Ezh2 cKO mice. Sequencing provided was 731 million total reads with an average of 84.5% of these reads aligning uniquely to the mouse genome. Reads uniquely mapped to known mRNAs were used to identify gene expression changes between housing conditions using DESeq2. We found that 2530 protein-coding genes were differentially expressed within the decidua and 521 were differentially expressed in the myometrium (FDR<0.05, excluding genes whose normalized read counts were less than 30 averaged across samples). Hypergeometric analysis revealed a strong enrichment for previously identified H3K27me3 targets within genes overexpressed in Ezh2 cKO decidua.
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Project description:Diabetic foot ulcers (DFU) are one of the major complications in type II diabetes patients and can result in amputation and morbidity. Although multiple approaches are used clinically to help wound closure, many patients still lack adequate treatment. Here we show that IL-20 subfamily cytokines are upregulated during normal wound healing. While there is a redundant role for each individual cytokine in this subfamily in wound healing, mice deficient in IL-22R, the common receptor chain for IL-20, IL-22, and IL-24, display a significant delay in wound healing. Furthermore, IL-20, IL-22 and IL-24 are all able to promote wound healing in type II diabetic db/db mice. When compared to other growth factors such as VEGF and PDGF that accelerate wound healing in this model, IL-22 uniquely induced genes involved in reepithelialization, tissue remodeling and innate host defense mechanisms from wounded skin. Interestingly, IL-22 treatment showed superior efficacy compared to PDGF or VEGF in an infectious diabetic wound model. Taken together, our data suggest that IL-20 subfamily cytokines, particularly IL-20, IL-22, and IL-24, might provide therapeutic benefit for patients with DFU.
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Project description:This a model from the article:
Macrophage dynamics in diabetic wound dealing.
Waugh HV, Sherratt JA. Bull Math Biol
2006 Jan;68(1):197-207 16794927
,
Abstract:
Wound healing in diabetes is a complex process, characterised by a chronic
inflammation phase. The exact mechanism by which this occurs is not fully
understood, and whilst several treatments for healing diabetic wounds exist,
very little research has been conducted towards the causes of the extended
inflammation phase. We describe a mathematical model which offers a possible
explanation for diabetic wound healing in terms of the distribution of
macrophage phenotypes being altered in the diabetic patient compared to normal
wound repair. As a consequence of this, we put forward a suggestion for
treatment based on rectifying the macrophage phenotype imbalance.
This model was taken from the CellML repository
and automatically converted to SBML.
The original model was:
Waugh HV, Sherratt JA. (2006) - version=1.0
The original CellML model was created by:
Catherine Lloyd
c.lloyd@auckland.ac.nz
The University of Auckland
This model originates from BioModels Database: A Database of Annotated Published Models (http://www.ebi.ac.uk/biomodels/). It is copyright (c) 2005-2011 The BioModels.net Team.
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To cite BioModels Database, please use: Li C, Donizelli M, Rodriguez N, Dharuri H, Endler L, Chelliah V, Li L, He E, Henry A, Stefan MI, Snoep JL, Hucka M, Le Novère N, Laibe C (2010) BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models. BMC Syst Biol., 4:92.
2010-06-25 | BIOMD0000000680 | BioModels
Project description:The cornea, transparent and outermost structure of camera-type eyes, is prone to environmental challenges, but has remarkable wound healing capabilities which enables to preserve vision. The manner in which cell plasticity impacts wound healing remains to be determined. In this study, we report rapid wound closure after zebrafish corneal epithelium abrasion. Furthermore, by investigating the cellular and molecular events taking place during corneal epithelial closure, we show the induction of a bilateral response to a unilateral wound. Our transcriptomic results, together with our TGF-beta receptor inhibition experiments, demonstrate conclusively the crucial role of TGF-beta signaling in corneal wound healing. Finally, our results on Pax6 expression and bilateral wound healing, demonstrate the decisive impact of epithelial cell plasticity on the pace of healing. Altogether, our study describes terminally differentiated cell competencies in the healing of an injured cornea. These findings will enhance the translation of research on cell plasticity to organ regeneration.
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