title: Consequences of chemoresistance for the herpes simplex virus thymidine kinase/ganciclovir-induced bystander effect in a human small cell lung cancer cell line model.
abstract: This paper focuses on the influence of chemoresistance on the herpes simplex virus (HSV-tk)/ganciclovir (GCV)-induced bystander effect (BE), as studied in a human small cell lung cancer (SCLC) cell line (GLC4) and its sublines with in vitro acquired resistance to adriamycin (GLC4/ADR), mitoxantrone (GLC4/MITO) and cisplatin (GLC4/CDDP). Chemoresistance for adriamycin, mitoxantrone and cisplatin significantly changed GCV sensitivity. A significant BE was found in all GLC4 cell lines. Compared to the parental GLC4 cell line, the BE was significantly higher only for the GLC4/ADR cell line. No expression of the nucleoside transporters MRP4 and MRP5 was detected. In all cell lines expression of connexin 43 was found, but modulation of gap junctional intercellular communication (GJIC) by 18-alpha-glycyrrhetinic acid did not significantly change the BE in any of the GLC4 cell lines. In conclusion, chemoresistance can influence the HSV-tk/GCV-induced BE, which seems not to be related to differences in MRP4/MRP5 expression or to differences in GJIC.
authors.affiliation: Department of Pathology, Groningen University Hospital, 9700 RB Groningen, The Netherlands.
authors.forename: Ingrid J
authors.initials: IJ
authors.lastname: Van Dillen
authors.forename: Nanno H
authors.initials: NH
authors.lastname: Mulder
authors.forename: Wim J
authors.initials: WJ
authors.lastname: Sluiter
authors.forename: Coby
authors.initials: C
authors.lastname: Meijer
authors.forename: Steven
authors.initials: S
authors.lastname: De Jong
authors.forename: Jadranka
authors.initials: J
authors.lastname: Loncarek
authors.forename: Marc
authors.initials: M
authors.lastname: Mesnil
authors.forename: Erik F J
authors.initials: EF
authors.lastname: De Vries
authors.forename: Willem
authors.initials: W
authors.lastname: Vaalburg
authors.forename: Geke A P
authors.initials: GA
authors.lastname: Hospers
mesh_terms: D018288:Carcinoma, Small Cell / Q000188:drug therapy / Q000201:enzymology / Q000235:genetics / Q000628:therapy*; D002450:Cell Communication / Q000187:drug effects / Q000502:physiology; D045744:Cell Line, Tumor; D018031:Connexin 43 / Q000096:biosynthesis; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D015774:Ganciclovir / Q000493:pharmacokinetics / Q000494:pharmacology*; D017629:Gap Junctions / Q000187:drug effects / Q000502:physiology; D015316:Genetic Therapy / Q000379:methods*; D006034:Glycyrrhetinic Acid / Q000494:pharmacology; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy / Q000201:enzymology / Q000235:genetics / Q000628:therapy*; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000096:biosynthesis; D018139:Simplexvirus / Q000201:enzymology / Q000235:genetics*; D013937:Thymidine Kinase / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism
chemical_list: D018031:Connexin 43; D015774:Ganciclovir; D006034:Glycyrrhetinic Acid; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D013937:Thymidine Kinase; C073492:ABCC4 protein, human; C120809:ABCC5 protein, human