High-risk HPV-positive human cancer cell lines show different sensitivity to cisplatin-induced apoptosis correlated with the p21Waf1/Cip1 level

Cancer Letters
K FunaokaY Totsuka

Abstract

We investigated the sensitivity and cell-cycle inhibitory gene expression of human papillomavirus (HPV) 16- and 18-positive human cancer cell lines after DNA damage induced by treatment with the anti-cancer drug cisplatin. Four HPV-positive cell lines (Caski, SiHa, HeLa and KB) were treated with cisplatin at various concentrations. Apoptotic cell death was observed in a dose-dependent manner in all cell lines treated with cisplatin; however, colony assay for chemosensitivity revealed that HeLa and KB cells (HPV 18-positive cell lines) were more sensitive than SiHa and Caski cells (HPV 16-positive cell lines). Northern blot analyses showed that p53 and p21Waf1/Cip1 mRNA were detectable in all untreated cells, and increasing amounts of these transcripts were identified in all cell lines treated with cisplatin. However, signals were more prominent in HeLa and KB, HPV 18-positive-cells. Immunohistochemical detection of p21Waf1/Cip1 protein showed that the p21-positive cells with apoptotic features were more distinct in KB and HeLa cells (HPV 18-positive) than in SiHa and Caski cells (HPV 16-positive). Our results show that there were differences in sensitivity to cisplatin among four types of high risk HPV-positive cells, possibly ...Continue Reading

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Citations

May 4, 1999·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·P L OliveS Vanderbyl
Jul 27, 2005·Molecular Carcinogenesis·Manickam VenkatramanDevarajan Karunagaran
May 7, 2008·The Journal of Biological Chemistry·Yuanyan WeiJianxin Gu
Aug 16, 2017·Cancer Metastasis Reviews·Nicholas FungCarole Fakhry
Aug 23, 2020·International Journal of Molecular Sciences·Sang Ah YiSo Hee Kwon
Feb 20, 2007·Cancer Research·Paraskevi BriassouliSpiros Linardopoulos

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