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Overexpression of poly(rC) binding protein 2 by alternative cleavage and polyadenylation promotes breast cancer progression via regulating UFD1 and NT5E

ABSTRACT: Alternative cleavage and polyadenylation (APA) is an important post-transcriptional regulatory mechanism, which could lead many diseases. PCBP2 plays critical roles in mRNA stabilization, translational enhancement and contributes to human cancer development and progression even though the molecular mechanism is not completely understood. Herein, we report that increased expression of PCBP2 is observed in human breast cancer tissues compared to benign or normal breast tissues, and high expression of PCBP2 is significantly associated with disease progression and poor outcome in patients with breast cancer. Knockdown of PCBP2 expression significantly decreased breast cancer cell proliferation, migration and invasion in vitro and in vivo. Molecularly, UFD1 and NT5E were identified as the downstream genes of PCBP2, which were scanned and verified based on RNA sequencing. Moreover, PCBP2 promotes oncogenic behaviors of breast cancer cells via upregulating the expression of UFD1 and NT5E by directly binding to their 3' untranslated regions (UTRs). Furthermore, we determine that the APA process is involved in regulating the overexpression PCBP2 in breast cancer cells. Therefore, our findings reveal that APA of PCBP2 3' UTR contributes to its overexpression and then promotes breast cancer progression by regulating the expression of UFD1 and NT5E.

ORGANISM(S): Homo sapiens

PROVIDER: GSE130564 | GEO | 2019/05/02

REPOSITORIES: GEO

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Overexpression of poly(rC) binding protein 2 by alternative cleavage and polyadenylation promotes breast cancer progression via regulating UFD1 and NT5E

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