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    Accumulating research implicated that circular RNAs exhibited significant roles in cancer development. Nonetheless, the role regarding circPTPN22 in pancreatic cancer remains unclear. Expression of circPTPN22 in pancreatic cancer cell lines and normal cells was determined with quantitative real-time PCR (qRT-PCR). Cell counting kit-8 assay and colony formation assay were used to measure the proliferation of pancreatic cancer cells. RNA immunoprecipitation and Western blot were employed for investigation the binding between circPTPN22 and STAT3. circPTPN22 expression was highly upregulated in pancreatic cancer tissues and cell lines. Knockdown of circPTPN22 inhibited cell proliferation and attenuates pancreatic cancer immune microenvironment. Furthermore, STAT3 acetylation was involved in these effects. circPTPN22 promoted STAT3 acetylation via inhibiting STAT3/SIRT1 interaction. circPTPN22 attenuates pancreatic cancer immune microenvironment by promoting STAT3 acetylation via inhibiting STAT3/SIRT1 interaction. © 2021. The Author(s), under exclusive licence to Springer Nature America, Inc.


    Yuan He, Pengyong Han, Chuang Chen, Shuzhe Xie, Huiqing Zhang, Yingming Song, Hao Hu, Qiang Zhao, Changhong Lian. circPTPN22 attenuates immune microenvironment of pancreatic cancer via STAT3 acetylation. Cancer gene therapy. 2023 Apr;30(4):559-566

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    PMID: 34471233

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