Human umbilical cord mesenchymal stem cell-derived exosome (hucMSC-Ex) plays an important role in tissue repair and immunomodulation, leading to the mitigation of inflammatory bowel disease. However, the preventive function of hucMSC-Ex in the onset and progression of colitis-associated colon cancer (CAC) is poorly understood. In the current study, dextran sodium sulfate/azoxymethane-induced colitis mouse model was established, and the mice disease activity index, body weight, colon length, tumor counts, survival curve, tissue H&E/immunohistochemistry, and cytokines expression were analyzed to evaluate the effects of hucMSC-Ex on CAC. In addition, miR-146a mimics were transfected into colonic epithelial cells (fetal human cells) to evaluate their role in the hucMSC-Ex-mediated regulation of SUMO1. The results showed that hucMSC-Ex inhibits the expression of SUMO1 to reduce the process of CAC progression. Further analysis indicated that miR-146a targets and inhibits SUMO1 expression and its binding to β-catenin. In conclusion, our findings showed that hucMSC-Ex is effective in alleviating the deterioration of colitis via the miR-146a-mediated inhibition of SUMO1, which is crucial in this disease process.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.molpharmaceut.1c00450 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Acute severe ulcerative colitis: defining the precise moment for colectomy.
Expert Rev Gastroenterol Hepatol
January 2025
INFINY Institute, Department of Gastroenterology, CHRU Nancy, INSERM NGERE, Université de Lorraine, Vandœuvre-lès-Nancy, France.
Introduction: Acute severe ulcerative colitis (ASUC) is a critical manifestation of ulcerative colitis (UC), often necessitating colectomy when medical management fails. Despite advancements in therapeutic interventions such as corticosteroids, biologics, and JAK inhibitors, a significant proportion of patients require surgery, with colectomy rates ranging from 10% to 15%.
Areas Covered: This paper reviews the factors influencing the timing and necessity of colectomy in ASUC management, emphasizing the importance of multidisciplinary decision-making involving gastroenterologists and surgeons.
Extra-Cavitary Primary Effusion Lymphoma in a Patient Co-infected With HIV-1 and HIV-2: A Case Review.
Cureus
December 2024
Infectious Diseases, Hospital Garcia de Orta, Lisbon, PRT.
Extra-cavitary primary effusion lymphoma (PEL), often associated with human herpes virus 8 (HHV8) infection, represents a rare and aggressive form of non-Hodgkin lymphoma, which is predominantly found in individuals with severe immunosuppression. As an acquired immunodeficiency syndrome (AIDS)-associated lymphoma, PEL typically manifests in the context of advanced human immunodeficiency virus (HIV) infection, requiring tailored therapeutic approaches to manage both the lymphoma and underlying immunodeficiency. A 53-year-old male patient from Cape Verde presented with a three-day history of fever, night sweats, right iliac fossa pain, hematochezia, and an unintentional weight loss of five kilograms over the previous two months.
View Article and Find Full Text PDFMUC17 is an essential small intestinal glycocalyx component that is disrupted in Crohn's disease.
JCI Insight
December 2024
Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden.
Crohn's disease (CD) is the chronic inflammation of the terminal ileum and colon triggered by a dysregulated immune response to bacteria, but insights into specific molecular perturbations at the critical bacteria-epithelium interface are limited. Here we report that the membrane mucin MUC17 protected small intestinal enterocytes against commensal and pathogenic bacteria. In non-inflamed CD ileum, reduced MUC17 levels and a compromised glycocalyx barrier allowed recurrent bacterial contact with enterocytes.
View Article and Find Full Text PDFMultiple Ileal and Colonic Stenoses: Is It Always Crohn's Disease?
J Crohns Colitis
December 2024
Department of Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, Milan, Italy.
A 62-year-old woman presented with multiple ileal and colonic stenoses, initially suspected to be Crohn's disease. Despite unremarkable endoscopic biopsies, surgery was performed due to clinical deterioration, and histological analysis confirmed the presence of metastatic breast cancer. This case highlights the importance of considering metastatic disease in the differential diagnosis of gastrointestinal (GI) strictures, particularly when inflammatory bowel disease markers are inconclusive or marginal.
View Article and Find Full Text PDFVanishing White Matter Disease in Children: An Unusual Association, a Novel Mutation, and a Literature Review.
Cureus
November 2024
Department of Pediatrics, Salmaniya Medical Complex, Manama, BHR.
Vanishing white matter (VWM) disease is an autosomal recessive disorder caused by mutations in the gene EIF2B encoding the subunits 1-5 of eukaryotic initiation factor 2B. Although rare, with a reported prevalence of 1:80,000 (0.001%), it was considered as one of the most common leukodystrophies.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!