Project description:Pericytes are integral components of the tissue vasculature and have essential functions in tumour angiogenesis. Endosialin (CD248) is a type I transmembrane glycoprotein highly expressed on pericytes in the tumour vasculature of most solid tumours, however it is low or negligibly expressed on normal tissue pericytes. Experiments using wild-type and endosialin-knockout mice has revealed that stromal endosialin expression facilitates intravasation of tumor cells from the primary tumor into the circulation, thereby promoting metastatic dissemination. BALB/c Ub-GFP wild-type and endosialin-knockout mice were inoculated with 67NR tumor cells. Tumor pericytes and tumor endothelial cells were isolated from primary tumors by FACSorting and total RNA was extracted from freshly isolated (i.e. without in vitro culture) cell populations.
Project description:This study aims to investigate differentially expressed proteins in tumor pericytes with or without TCAF2-ovexpression. Tumor pericytes were isolated from tumor of patients with colorectal cancer. Then, tumor pericytes were cultured, transfected with vector or TCAF2 overexpressing plasmid. Top ten cytokines were screened and Wnt5a was the most significant one.
Project description:This study aims to investigate differentially expressed proteins in tumor pericytes derived from colorectal cancer patients with or without liver metastasis. Tumor pericytes were isolated from tumor of colorectal cancer patients with or without liver metastasis. Then, tumor pericytes were cultured and subjected to proteomic analysis. TCAF2 was significantly increased in tumor pericytes from liver metastasis patients.
Project description:Pericytes are integral components of the tissue vasculature and have essential functions in tumour angiogenesis. Endosialin (CD248) is a type I transmembrane glycoprotein highly expressed on pericytes in the tumour vasculature of most solid tumours, however it is low or negligibly expressed on normal tissue pericytes. Experiments using wild-type and endosialin-knockout mice has revealed that stromal endosialin expression facilitates intravasation of tumor cells from the primary tumor into the circulation, thereby promoting metastatic dissemination.
Project description:Post-injury remodeling is a complex process involving temporal specific cellular interactions in the injured tissue where the resident fibroblasts play multiple roles, including inflammation induction and tissue remodeling. To dissect the molecular basis of these interactions, we performed single-cell and spatial transcriptome analysis in human and mouse hearts after myocardial infarction. A subset of fibroblasts identified by unique high expression of CD248 was strongly correlated with collagen synthesis and remodeling, and genetic deletion of CD248 in fibroblast ameliorated cardiac fibrosis and dysfunction following ischemia/reperfusion, highlighting the functional importance of CD248 positive fibroblasts in post-injury pathological remodeling. CD248 stabilizes TGF-βR Ⅰ protein and activates ACKR3 expression in fibroblast, leading to enhanced T cell adhesion and retention. This CD248 mediated fibroblast-T cell interaction is required to sustain fibroblast activation and scar expansion in injured heart. Disruption of this interaction using monoclonal antibody or Chimeric antigen receptor T cell reduces T cell infiltration, ameliorates ischemia/reperfusion-induced cardiac fibrosis and improves heart function. Therefore, single cell and spatial molecular profiling in post-injury heart has uncovered a CD248 specific subclass of fibroblast with a critical role in fibroblast-T cell interaction and a new potential therapy to treat tissue fibrosis.
Project description:Post-injury remodeling is a complex process involving temporal specific cellular interactions in the injured tissue where the resident fibroblasts play multiple roles, including inflammation induction and tissue remodeling. To dissect the molecular basis of these interactions, we performed single-cell and spatial transcriptome analysis in human and mouse hearts after myocardial infarction. A subset of fibroblasts identified by unique high expression of CD248 was strongly correlated with collagen synthesis and remodeling, and genetic deletion of CD248 in fibroblast ameliorated cardiac fibrosis and dysfunction following ischemia/reperfusion, highlighting the functional importance of CD248 positive fibroblasts in post-injury pathological remodeling. CD248 stabilizes TGF-βR Ⅰ protein and activates ACKR3 expression in fibroblast, leading to enhanced T cell adhesion and retention. This CD248 mediated fibroblast-T cell interaction is required to sustain fibroblast activation and scar expansion in injured heart. Disruption of this interaction using monoclonal antibody or Chimeric antigen receptor T cell reduces T cell infiltration, ameliorates ischemia/reperfusion-induced cardiac fibrosis and improves heart function. Therefore, single cell molecular profiling in post-injury heart has uncovered a CD248 specific subclass of fibroblast with a critical role in fibroblast-T cell interaction and a new potential therapy to treat tissue fibrosis.
