title: Noscapine Increases the Sensitivity of Drug-Resistant Ovarian Cancer Cell Line SKOV3/DDP to Cisplatin by Regulating Cell Cycle and Activating Apoptotic Pathways.
abstract: Cisplatin is a first-line chemotherapy drug against ovarian cancer. However, its strong toxic side effects and the development of cisplatin resistance in human cancer cells seriously influence the effects of chemotherapy and quality of life in patients. Noscapine (Nos), a non-toxic benzylisoquinoline alkaloid extracted from opium, has been recently reported to have anti-cancer activity, but the mechanism of that effect has not been clearly established. In the present study, we investigated cytotoxicity of Nos in combination with cisplatin (DDP) in drug-resistant human ovarian cancer cell line SKOV3/DDP in vitro and in vivo null mice xenograft model. Cell proliferation was measured by MTT assay, flow cytometry was used to analyze cell cycle and apoptosis, protein expression of several apoptotic factors was investigated by flow cytometry and immunohistochemical method, and their mRNA expression levels were determined by real-time PCR. In vitro experiments showed that Nos significantly inhibited proliferation of SKOV3/DDP cells. DDP/Nos-combined treatment notably enhanced DDP-induced inhibition of cell proliferation and increased the pro-apoptotic effect of DDP in SKOV3/DDP cells. DDP/Nos administration increased the proportion of G2/M cells, reduced both protein and mRNA expression of anti-apoptotic factors XIAP, surviving and NF-kB, and augmented protein and mRNA levels of pro-apoptotic caspase-3. In vivo experiments revealed that Nos/DDP treatment increased the apoptotic rate of xenograft tumors in null mice. Tumor volume decreased from 1.733 ± 0.155 g in mice treated with DDP alone to 1.191 ± 0.106 g in animals treated with Nos/DDP. These observations suggest that Nos increases the anti-cancer activity of DDP against the drug-resistant ovarian cancer cell line SKOV3/DDP by modulating the cell cycle and activating apoptotic pathways. The study provides a new chemotherapy strategy for the treatment of DDP-resistant human ovarian cancer.
authors.affiliation: Department of Obstetrics and Gynecology, The Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, 050011, Hebei, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Shen
authors.affiliation: Department of Nursing, Hebei Women Vocational Technology College, 16 Huiwen Street, Shijiazhuang, 050091, Hebei, China.
authors.forename: Bingfeng
authors.initials: B
authors.lastname: Liang
authors.affiliation: Department of Obstetrics and Gynecology, The Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, 050011, Hebei, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yin
authors.affiliation: Department of Obstetrics and Gynecology, The Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, 050011, Hebei, China.
authors.forename: Xiurong
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Obstetrics and Gynecology, The Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang, 050011, Hebei, China. drjianxincheng@163.com.
authors.forename: Jianxin
authors.initials: J
authors.lastname: Cheng
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000494:pharmacology*; D000996:Antitussive Agents / Q000008:administration & dosage; D017209:Apoptosis; D002453:Cell Cycle / Q000187:drug effects*; D045744:Cell Line, Tumor / Q000187:drug effects; D049109:Cell Proliferation; D002945:Cisplatin / Q000494:pharmacology*; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D051379:Mice; D008807:Mice, Inbred BALB C; D009665:Noscapine / Q000494:pharmacology*; D010051:Ovarian Neoplasms / Q000473:pathology*; D023041:Xenograft Model Antitumor Assays
chemical_list: D000970:Antineoplastic Agents; D000996:Antitussive Agents; D009665:Noscapine; D002945:Cisplatin
keywords: Apoptosis pathway; Cisplatin; Multidrug resistance; Noscapine; Ovarian cancer