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Inhibition of Chk1 stimulates cytotoxic action of platinum-based drugs and TRAIL combination in human prostate cancer cells.
Krkoska, Martin; Paruch, Kamil; Sosolíková, Tereza; Vázquez-Gómez, Gerardo; Herudková, Jarmila; Novotný, Jan; Ovesná, Petra; Sova, Petr; Hyrslová Vaculová, Alena.
Afiliação
  • Krkoska M; Department of Cytokinetics, 86853 Institute of Biophysics of the Czech Academy of Sciences , Královopolská 135, CZ-612 65 Brno, Czech Republic.
  • Paruch K; Department of Experimental Biology, Faculty of Science, 117204 Masaryk University , Kamenice 5, CZ-625 00 Brno, Czech Republic.
  • Sosolíková T; International Clinical Research Center, St. Anne's University Hospital, Pekarská 53, CZ-602 00 Brno, Czech Republic.
  • Vázquez-Gómez G; Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, CaZ-625 00, Brno, Czech Republic.
  • Herudková J; Department of Cytokinetics, 86853 Institute of Biophysics of the Czech Academy of Sciences , Královopolská 135, CZ-612 65 Brno, Czech Republic.
  • Novotný J; Department of Experimental Biology, Faculty of Science, 117204 Masaryk University , Kamenice 5, CZ-625 00 Brno, Czech Republic.
  • Ovesná P; Department of Cytokinetics, 86853 Institute of Biophysics of the Czech Academy of Sciences , Královopolská 135, CZ-612 65 Brno, Czech Republic.
  • Sova P; Department of Cytokinetics, 86853 Institute of Biophysics of the Czech Academy of Sciences , Královopolská 135, CZ-612 65 Brno, Czech Republic.
  • Hyrslová Vaculová A; Department of Cytokinetics, 86853 Institute of Biophysics of the Czech Academy of Sciences , Královopolská 135, CZ-612 65 Brno, Czech Republic.
Biol Chem ; 405(6): 395-406, 2024 Jun 25.
Article em En | MEDLINE | ID: mdl-38452398
ABSTRACT
Checkpoint kinase 1 (Chk1) plays an important role in regulation of the cell cycle, DNA damage response and cell death, and represents an attractive target in anticancer therapy. Small-molecule inhibitors of Chk1 have been intensively investigated either as single agents or in combination with various chemotherapeutic drugs and they can enhance the chemosensitivity of numerous tumor types. Here we newly demonstrate that pharmacological inhibition of Chk1 using potent and selective inhibitor SCH900776, currently profiled in phase II clinical trials, significantly enhances cytotoxic effects of the combination of platinum-based drugs (cisplatin or LA-12) and TRAIL (tumor necrosis factor-related apoptosis inducing ligand) in human prostate cancer cells. The specific role of Chk1 in the drug combination-induced cytotoxicity was confirmed by siRNA-mediated silencing of this kinase. Using RNAi-based methods we also showed the importance of Bak-dependent mitochondrial apoptotic pathway in the combined anticancer action of SCH900776, cisplatin and TRAIL. The triple drug combination-induced cytotoxicity was partially enhanced by siRNA-mediated Mcl-1 silencing. Our findings suggest that targeting Chk1 may be used as an efficient strategy for sensitization of prostate cancer cells to killing action of platinum-based chemotherapeutic drugs and TRAIL.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Neoplasias da Próstata / Cisplatino / Ligante Indutor de Apoptose Relacionado a TNF / Quinase 1 do Ponto de Checagem / Antineoplásicos Limite: Humans / Male Idioma: En Revista: Biol Chem Assunto da revista: BIOQUIMICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: República Tcheca

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Neoplasias da Próstata / Cisplatino / Ligante Indutor de Apoptose Relacionado a TNF / Quinase 1 do Ponto de Checagem / Antineoplásicos Limite: Humans / Male Idioma: En Revista: Biol Chem Assunto da revista: BIOQUIMICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: República Tcheca