title: Effect of frequently used chemotherapeutic drugs on cytotoxic activity of human cytotoxic T-lymphocytes.
abstract: Tumors are considered to be possible targets of immunotherapy using stimulated and expanded cytotoxic T-lymphocytes (CTL). It is important to consider the drug-induced effects when chemotherapeutic regimens and CTL-mediated immunotherapy is planned to be used in parallel. In this study, we characterized the effect of 29 frequently used chemotherapeutic agents on the cytotoxic activity of autologous and allogeneic CTLs. We found that treatment of CTLs with the following drugs: docetaxel, vincristine, chlorambucil, mitomycin C, oxaliplatin, doxorubicin, and bleomycin effectively inhibited CTL-mediated killing, without affecting their viability. On the other hand, the following drugs enhanced or permitted efficient CTL-mediated killing in vitro at concentrations comparable with the maximally achieved therapeutic concentration in vivo in humans: daunorubicin, prednisolone, vinorelbine, cisplatin, methotrexate, hydroxyurea, cytarabine, cyclophosphamide, topotecan, epirubicin, fluorouracil, carboplatin, asparaginase, 6-mercaptopurine, and bortezomib. Our results could potentially be used in the future to design new CTL-based adjuvant immunotherapy protocols.
authors.affiliation: Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
authors.forename: Laszlo
authors.initials: L
authors.lastname: Markasz
authors.forename: Henriette
authors.initials: H
authors.lastname: Skribek
authors.forename: Michael
authors.initials: M
authors.lastname: Uhlin
authors.forename: Rita
authors.initials: R
authors.lastname: Otvos
authors.forename: Emilie
authors.initials: E
authors.lastname: Flaberg
authors.forename: Staffan
authors.initials: S
authors.lastname: Eksborg
authors.forename: Eva
authors.initials: E
authors.lastname: Olah
authors.forename: Gyorgy
authors.initials: G
authors.lastname: Stuber
authors.forename: Laszlo
authors.initials: L
authors.lastname: Szekely
mesh_terms: D000970:Antineoplastic Agents / Q000009:adverse effects / Q000494:pharmacology*; D000971:Antineoplastic Combined Chemotherapy Protocols; D002461:Cell Line, Transformed; D002470:Cell Survival / Q000187:drug effects; D003601:Cytotoxicity Tests, Immunologic; D003602:Cytotoxicity, Immunologic / Q000187:drug effects*; D006801:Humans; D016219:Immunotherapy, Adoptive; D018613:Microscopy, Confocal; D009369:Neoplasms / Q000188:drug therapy / Q000276:immunology; D013602:T-Lymphocytes, Cytotoxic / Q000187:drug effects / Q000276:immunology*
chemical_list: D000970:Antineoplastic Agents