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Upregulation of G2\/M Wee1 kinase was shown in FLNA\u2010deficient mouse neural progenitor cells, and it has been reported in several tumours. This study explored Wee1 expression in ACC and its regulation by FLNA, the effects of Wee1 inhibitor AZD1775, and the impact of FLNA on its efficacy in ACC cell lines and primary cells. Analysis of FLNA and Wee1 proteins revealed elevated Wee1 and reduced FLNA in ACC compared to normal adrenal gland. FLNA knockdown increased Wee1 protein in NCI\u2010H295R, MUC\u20101, and in primary ACC cells. Higher p\u2010CDK1 and cyclin B1 were shown in FLNA\u2010silenced MUC\u20101, while decreased Wee1, p\u2010CDK1 and cyclin B1 resulted after FLNA overexpression. Wee1 reduction was reverted by lactacystin treatment and FLNA transfection increased p\u2010Wee1 (Ser123), suggesting FLNA's role in targeting Wee1 for degradation. AZD1775 dose\u2010dependently reduced proliferation and viability in ACC cell lines and primary cultures, and it triggered MUC\u20101 cell death. Similar effects were induced by Wee1 silencing. FLNA depletion augmented AZD1775's efficacy in reducing proliferation and potentiating apoptosis in MUC\u20101 and primary cells. In conclusion, we demonstrated that FLNA regulates Wee1 expression by promoting its degradation, suggesting that low FLNA typical of ACC leads to increased Wee1 with consequent cancer cells growth. It proposes Wee1 inhibition as a new potential therapeutic approach for ACC, particularly for those lacking FLNA.<\/jats:p>","DOI":"10.1002\/ijc.35239","type":"journal-article","created":{"date-parts":[[2024,11,12]],"date-time":"2024-11-12T02:40:58Z","timestamp":1731379258000},"page":"1256-1271","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Therapeutic potential of targeting the FLNA\u2010regulated Wee1 kinase in adrenocortical carcinomas"],"prefix":"10.1002","volume":"156","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9238-0367","authenticated-orcid":false,"given":"Emanuela","family":"Esposito","sequence":"first","affiliation":[{"name":"Department of Clinical Sciences and Community Health University of Milan  Milan Italy"},{"name":"PhD Programme in Experimental Medicine University of Milan  Milan 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