title: ABCG2-overexpressing H460/MX20 cell xenografts in athymic nude mice maintained original biochemical and cytological characteristics.
abstract: H460/MX20 are derived from large cell lung cancer H460 cell line and then transformed into ABCG2-overexpressing cells by mitoxantrone's induction, which are widely used in study of multidrug resistance (MDR) in vitro. To establish and spread the model of H460/MX20 cell xenografts, we investigated whether cell biological characteristics and the MDR phenotype were maintained in vivo model. Our results demonstrated that the cell proliferation, cell cycle, and ABCG2 expression level in xH460/MX20 cells isolated from H460/MX20 cell xenografts were similar to H460/MX20 cells in vitro. Importantly, xH460/MX20 cells exhibited high levels of resistance to ABCG2 substrates such as mitoxantrone and topotecan as H460/MX20 cells did. Furthermore, lapatinib, the inhibitor of ABCG2, potently reversed mitoxantrone- and topotecan-resistance of xH460/MX20 cells. Taken together, these results suggest that H460/MX20 cell xenografts in athymic nude mice still retain their original cytological characteristics and MDR phenotype. Thus, the H460/MX20 cell xenografts model could serve as a sound model in vivo for study on reversal MDR.
authors.affiliation: Experimental Animal Center, Sun Yat-sen University, Guangzhou, 510080, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China.|Guangdong Esophageal Cancer Institute, Guangzhou, 510060, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China.
authors.forename: Likun
authors.initials: L
authors.lastname: Chen
authors.affiliation: Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China.|Guangdong Esophageal Cancer Institute, Guangzhou, 510060, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.affiliation: Experimental Animal Center, Sun Yat-sen University, Guangzhou, 510080, China.
authors.forename: Furong
authors.initials: F
authors.lastname: Li
authors.affiliation: Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China.|Guangdong Esophageal Cancer Institute, Guangzhou, 510060, China.
authors.forename: Xiaokun
authors.initials: X
authors.lastname: Wang
authors.affiliation: Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China.|Guangdong Esophageal Cancer Institute, Guangzhou, 510060, China.
authors.forename: Liwu
authors.initials: L
authors.lastname: Fu
mesh_terms: D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2 / Q000378:metabolism*; D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology; D002289:Carcinoma, Non-Small-Cell Lung / Q000473:pathology*; D049109:Cell Proliferation; D004195:Disease Models, Animal; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D064593:Heterografts; D000077341:Lapatinib; D008819:Mice, Nude; D008942:Mitoxantrone / Q000494:pharmacology; D009363:Neoplasm Proteins / Q000378:metabolism*; D009368:Neoplasm Transplantation; D011799:Quinazolines / Q000494:pharmacology; D019772:Topotecan / Q000494:pharmacology
chemical_list: C116614:ABCG2 protein, human; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D000970:Antineoplastic Agents; D009363:Neoplasm Proteins; D011799:Quinazolines; D000077341:Lapatinib; D019772:Topotecan; D008942:Mitoxantrone