title: [Combined action of binase and bleomycin toward human lung adenocarcinoma cells].
abstract: Some microbial ribonucleases (RNases) demonstrate selective cytotoxic effect against a wide range of tumor cells. In this context combined use of cytotoxic RNases in complex therapy with other chemotherapeutic agents appears to be especially promising. In this study we have investigated the apoptosis-induced effect of Bacillus pumilus RNase (binase) in combination with known anti-tumor antibiotic bleomycin on human lung adenocarcinoma A549 cells. The combined effect of high concentrations of these agents did not have any mutual increase in their apoptosis-induced action, while a combination of non-apoptotic concentrations resulted in the increase of the proportion of apoptotic cells up to 22% as compared with individual effect of bleomycin (6%) and binase (12%) used separately. These results indicate that binase and bleomycin are effective in combination of their low concentrations and ineffective in combination of their high concentrations.
authors.affiliation: Kazan (Volga Region) Federal University, Kazan, Russia.
authors.forename: P V
authors.initials: PV
authors.lastname: Zelenikhin
authors.affiliation: Kazan (Volga Region) Federal University, Kazan, Russia.
authors.forename: A V
authors.initials: AV
authors.lastname: Makeeva
authors.affiliation: Kazan (Volga Region) Federal University, Kazan, Russia.
authors.forename: T N
authors.initials: TN
authors.lastname: Nguen
authors.affiliation: Kazan (Volga Region) Federal University, Kazan, Russia; College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.
authors.forename: Y A
authors.initials: YA
authors.lastname: Siraj
authors.affiliation: Kazan (Volga Region) Federal University, Kazan, Russia.
authors.forename: O N
authors.initials: ON
authors.lastname: Ilinskaya
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism*; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001761:Bleomycin / Q000494:pharmacology*; D045744:Cell Line, Tumor; D004357:Drug Synergism; D004722:Endoribonucleases / Q000494:pharmacology*; D006801:Humans; D008175:Lung Neoplasms / Q000378:metabolism*
chemical_list: D000903:Antibiotics, Antineoplastic; D001761:Bleomycin; D004722:Endoribonucleases; C022543:ribonuclease T(2)
keywords: Bacillus pumilus; antitumor activity; binase; bleomycin; cytotoxic ribonucleases; lung adenocarcinoma