PMID- 36064319 OWN - NLM STAT- MEDLINE DCOM- 20220907 LR - 20220914 IS - 1689-1392 (Electronic) IS - 1425-8153 (Print) IS - 1425-8153 (Linking) VI - 27 IP - 1 DP - 2022 Sep 5 TI - Pou3f1 mediates the effect of Nfatc3 on ulcerative colitis-associated colorectal cancer by regulating inflammation. PG - 75 LID - 10.1186/s11658-022-00374-0 [doi] LID - 75 AB - BACKGROUND: Ulcerative colitis-associated colorectal cancer (UC-CRC) is an important complication of ulcerative colitis. Pou3f1 (POU class 3 homeobox 1) is a critical regulator for developmental events and cellular biological processes. However, the role of Pou3f1 in the development of UC-CRC is unclear. METHODS: In vivo, a UC-CRC mouse model was induced by azoxymethane (AOM) and dextran sulfate sodium (DSS). Body weight, colon length, mucosal damage, tumor formation, and survival rate were assessed to determine the progression of UC-CRC. Western blot, quantitative real-time PCR, ELISA, immunohistochemistry, immunofluorescence and TUNEL were performed to examine the severity of inflammation and tumorigenesis. In vitro, LPS-treated mouse bone marrow-derived macrophages (BMDMs) and RAW264.7 cells were used to study the role of Pou3f1 in inflammation. ChIP and luciferase reporter assays were used to confirm the interaction between Nfatc3 and Pou3f1. RESULTS: Pou3f1 expression was increased in the colons of UC-CRC mice, and its inhibition attenuated mucosal injury, reduced colon tumorigenesis and increased survival ratio. Knockdown of Pou3f1 suppressed cell proliferation and increased cell death in colon tumors. Both the in vivo and in vitro results showed that Pou3f1 depletion reduced the production of proinflammation mediators. In addition, ChIP and luciferase reporter assays demonstrated that Nfatc3 directly bound with the Pou3f1 promoter to induce its expression. The effect of Nfatc3 on the inflammatory response in macrophages was suppressed by Pou3f1 knockdown. CONCLUSION: Overall, it outlines that Pou3f1 mediates the role of Nfatc3 in regulating macrophage inflammation and carcinogenesis in UC-CRC development. CI - (c) 2022. The Author(s). FAU - Lin, Yan AU - Lin Y AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. FAU - Wang, Dongxu AU - Wang D AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. FAU - Zhao, Hong AU - Zhao H AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. AD - Department of Gastroenterology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, China. FAU - Li, Dongyue AU - Li D AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. AD - Department of Respiratory, Ansteel Group General Hospital, Anshan, China. FAU - Li, Xinning AU - Li X AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. AD - Medical Oncology Ward, Tieling Central Hospital, Tieling, China. FAU - Lin, Lianjie AU - Lin L AD - Department of Gastroenterology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, 110004, Shenyang, China. leanlj13@yeah.net. LA - eng PT - Journal Article DEP - 20220905 PL - England TA - Cell Mol Biol Lett JT - Cellular & molecular biology letters JID - 9607427 RN - 0 (NFATC Transcription Factors) RN - 0 (Pou3f1 protein, mouse) RN - 0 (transcription factor NF-AT c3) RN - 132052-52-9 (Octamer Transcription Factor-6) RN - 9042-14-2 (Dextran Sulfate) SB - IM MH - Animals MH - Carcinogenesis MH - *Colitis-Associated Neoplasms MH - Dextran Sulfate/toxicity MH - Inflammation MH - Mice MH - NFATC Transcription Factors MH - Octamer Transcription Factor-6/*metabolism PMC - PMC9446766 OTO - NOTNLM OT - Inflammation OT - Macrophage OT - Nfatc3 OT - Pou3f1 OT - Ulcerative colitis-associated colorectal cancer COIS- The authors declare that they have no competing interests. EDAT- 2022/09/06 06:00 MHDA- 2022/09/08 06:00 PMCR- 2022/09/05 CRDT- 2022/09/05 23:32 PHST- 2022/04/22 00:00 [received] PHST- 2022/08/12 00:00 [accepted] PHST- 2022/08/01 00:00 [revised] PHST- 2022/09/05 23:32 [entrez] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/09/08 06:00 [medline] PHST- 2022/09/05 00:00 [pmc-release] AID - 10.1186/s11658-022-00374-0 [pii] AID - 374 [pii] AID - 10.1186/s11658-022-00374-0 [doi] PST - epublish SO - Cell Mol Biol Lett. 2022 Sep 5;27(1):75. doi: 10.1186/s11658-022-00374-0.