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Splicing factor 3b subunit 4 (SF3b4) is mediated by EP300 and CREBBP to promote colorectal cancer (CRC) proliferation by enhancing autophagy

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机构： [1]Department of Gastrointestinal Surgery, Affiliated Hospital of North Sichuan Medical College/Institute of Hepatobiliary Pancreatic and Intestinal Disease, North Sichuan Medical College Nanchong, Sichuan, China.

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关键词： Colorectal cancer EP300 CREBBP H3K27ac SF3b4 proliferation autophagy

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Splicing factor 3b subunit 4 (SF3b4) is closely associated with cancer development. As a core subunit of the SF3b complex, SF3b4 participates in regulating alternative splicing, and its abnormal expression is linked to the onset of malignant tumors. However, the role of SF3b4 in colorectal cancer (CRC) remains undefined. This study demonstrates that in CRC, E1A binding protein p300 (EP300) and CREB binding protein (CREBBP) regulate SF3b4 expression by activating Histone H3 lysine 27 acetylation (H3K27ac) on the SF3b4 promoter. Additionally, enhanced autophagy counteracts the proliferation-inhibitory effect of SF3b4 knockdown in CRC cells. Implications Statement: SF3b4 may promote CRC proliferation by enhancing cellular autophagy. SF3b4 acts as a potential oncogene in CRC tumorigenesis and progression. SF3b4 serves as a promising prognostic biomarker for CRC.AJCR Copyright © 2025.

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大类 | 3 区医学

小类 | 4 区肿瘤学

最新[2025]版：

大类 | 3 区医学

小类 | 4 区肿瘤学

第一作者：

第一作者机构： [1]Department of Gastrointestinal Surgery, Affiliated Hospital of North Sichuan Medical College/Institute of Hepatobiliary Pancreatic and Intestinal Disease, North Sichuan Medical College Nanchong, Sichuan, China.

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