Interference with SMO increases chemotherapy drug sensitivity of A2780/DDP cells by inhibiting the Hh/Gli signaling pathway. Issue 5 (6th January 2020)

• Record Type: Journal Article
• Authors: Ma, Shihong; Liu, Dan; Tan, Wenhua; Du, Botao; Liu, Wei; Li, Weijia; Jiao, Yufei
• Is Part Of: Journal of cellular biochemistry. Volume 121:Issue 5/6(2020)
• Page Start: 3256
• Page End: 3265
• Publication Date: 2020-01-06
• Subjects: cisplatin resistance -- Hedgehog/Gli -- invasion -- SMO; Cytochemistry -- Periodicals; 572
• DOI: 10.1002/jcb.29593
• Languages: English
• ISSNs: 0730-2312

Abstract

Abstract: Aberrant activation of the Hedgehog (Hh)/Gli pathway contributes to the tumorigenesis of several human cancers, including ovarian cancers. We investigated the function of SMO on cell growth, drug resistance, and invasive ability in A2780/DDP cells. Moreover, we also tested the levels of the downstream target genes of the Hh/Gli pathway in SMO short hairpin RNA (shRNA) lentivirus‐infected A2780/DDP cells. Western blot analysis results revealed that the Hh/Gli pathway was activated in cisplatin‐resistant A2780/DDP cells. After infection by SMO shRNA lentivirus, the colony formation rate and invasive rate of cisplatin‐resistant A2780/DDP cells were decreased. 3‐(4, 5‐Dimethylthiazol‐2‐yl)‐2, 5‐diphenyltetrazolium bromide assay showed that upon transfection with SMO shRNA, cell growth was decreased and drug sensitivity to cisplatin was upregulated. Moreover, interference with SMO decreased the expression of MMP‐2, MMP‐9, VEGF, and Snail in cisplatin‐resistant cells. Thus, the Hh/Gli signaling pathway was aberrantly activated in A2780/DDP cells. The colony formation rate and invasive rate were decreased in SMO shRNA lentivirus–infected A2780/DDP cells. All results showed that inhibiting Hh/Gli signaling may negatively regulate the proliferation, invasion, and metastasis of cisplatin‐resistant A2780/DDP cells, as well as increase the sensitivity of A2780/DDP to the chemotherapeutic drug of cisplatin. Abstract : All results demonstrated that inhibiting the activation of the Hedgehog (Hh)/Gli signaling pathway may negatively regulate the proliferation, invasion, and metastasis of cisplatin‐resistant A2780/DDP cells, as well as increased the sensitivity of A2780/DDP to the chemotherapeutic drug of cisplatin.