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Kaiso is required for MTG16-dependent effects on colitis-associated carcinoma.
Short, Sarah P; Barrett, Caitlyn W; Stengel, Kristy R; Revetta, Frank L; Choksi, Yash A; Coburn, Lori A; Lintel, Mary K; McDonough, Elizabeth M; Washington, M Kay; Wilson, Keith T; Prokhortchouk, Egor; Chen, Xi; Hiebert, Scott W; Reynolds, Albert B; Williams, Christopher S.
Afiliación
  • Short SP; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Barrett CW; Program in Cancer Biology, Vanderbilt University, Nashville, TN, 37232, USA.
  • Stengel KR; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Revetta FL; Program in Cancer Biology, Vanderbilt University, Nashville, TN, 37232, USA.
  • Choksi YA; Department of Biochemistry, Vanderbilt University, Nashville, TN, 37232, USA.
  • Coburn LA; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Lintel MK; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • McDonough EM; Program in Cancer Biology, Vanderbilt University, Nashville, TN, 37232, USA.
  • Washington MK; Veterans Affairs Tennessee Valley Health Care System, Nashville, TN, 37232, USA.
  • Wilson KT; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Prokhortchouk E; Veterans Affairs Tennessee Valley Health Care System, Nashville, TN, 37232, USA.
  • Chen X; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Hiebert SW; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Reynolds AB; Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
  • Williams CS; Department of Pediatrics, Division of Gastroenterology, Our Lady of the Lake Children's Hospital, Baton Rouge, TN, 70808, USA.
Oncogene ; 38(25): 5091-5106, 2019 06.
Article en En | MEDLINE | ID: mdl-30858547
The myeloid translocation gene family member MTG16 is a transcriptional corepressor that relies on the DNA-binding ability of other proteins to determine specificity. One such protein is the ZBTB family member Kaiso, and the MTG16:Kaiso interaction is necessary for repression of Kaiso target genes, such as matrix metalloproteinase-7. Using the azoxymethane and dextran sodium sulfate (AOM/DSS) murine model of colitis-associated carcinoma, we previously determined that MTG16 loss accelerates tumorigenesis and inflammation. However, it was unknown whether this effect was modified by Kaiso-dependent transcriptional repression. To test for a genetic interaction between MTG16 and Kaiso in inflammatory carcinogenesis, we subjected single and double knockout (DKO) mice to the AOM/DSS protocol. Mtg16-/- mice demonstrated increased colitis and tumor burden; in contrast, disease severity in Kaiso-/- mice was equivalent to wild-type controls. Surprisingly, Kaiso deficiency in the context of MTG16 loss reversed injury and pro-tumorigenic responses in the intestinal epithelium following AOM/DSS treatment, and tumor numbers were returned to near to wild-type levels. Transcriptomic analysis of non-tumor colon tissue demonstrated that changes induced by MTG16 loss were widely mitigated by concurrent Kaiso loss, and DKO mice demonstrated downregulation of metabolism and cytokine-associated gene sets with concurrent activation of DNA damage checkpoint pathways as compared with Mtg16-/-. Further, Kaiso knockdown in intestinal enteroids reduced stem- and WNT-associated phenotypes, thus abrogating the induction of these pathways observed in Mtg16-/- samples. Together, these data suggest that Kaiso modifies MTG16-driven inflammation and tumorigenesis and suggests that Kaiso deregulation contributes to MTG16-dependent colitis and CAC phenotypes.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas Represoras / Factores de Transcripción / Adenocarcinoma / Colitis / Neoplasias del Colon / Carcinogénesis Tipo de estudio: Guideline / Prognostic_studies / Risk_factors_studies Límite: Animals / Female / Humans / Male Idioma: En Revista: Oncogene Asunto de la revista: BIOLOGIA MOLECULAR / NEOPLASIAS Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas Represoras / Factores de Transcripción / Adenocarcinoma / Colitis / Neoplasias del Colon / Carcinogénesis Tipo de estudio: Guideline / Prognostic_studies / Risk_factors_studies Límite: Animals / Female / Humans / Male Idioma: En Revista: Oncogene Asunto de la revista: BIOLOGIA MOLECULAR / NEOPLASIAS Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido