Your browser doesn't support javascript.
loading
3,3'-Diselenodipropionic acid (DSePA) induces reductive stress in A549 cells triggering p53-independent apoptosis: A novel mechanism for diselenides.
Gandhi, V V; Gandhi, K A; Kumbhare, L B; Goda, J S; Gota, V; Priyadarsini, K I; Kunwar, A.
Afiliação
  • Gandhi VV; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400 094, India; Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
  • Gandhi KA; Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi, Mumbai, India.
  • Kumbhare LB; Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
  • Goda JS; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400 094, India; Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi, Mumbai, India.
  • Gota V; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400 094, India; Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi, Mumbai, India.
  • Priyadarsini KI; UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Mumbai, 400098, India.
  • Kunwar A; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400 094, India; Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India. Electronic address: kamit@barc.gov.in.
Free Radic Biol Med ; 175: 1-17, 2021 11 01.
Article em En | MEDLINE | ID: mdl-34425189
The aim of present study was to investigate the anticancer mechanisms of 3,3'-diselenodipropionic acid (DSePA), a redox-active organodiselenide in human lung cancer cells. DSePA elicited a significant concentration and time-dependent cytotoxicity in human lung cancer cell line A549 than in normal WI38 cells. The cytotoxic effect of DSePA was preceded by an acute decrease in the level of basal reactive oxygen species (ROS) and a concurrent increase in levels of reducing equivalents (like GSH/GSSG and NADH/NAD) within cells. Further, a series of experiments were performed to measure the markers of intrinsic (Bax, cytochrome c and caspase-9), extrinsic (TNFR, FADR and caspase-8) and endoplasmic reticulum (ER) stress (protein ubiquitylation, calcium flux, Bip, CHOP and caspase-12) pathways in DSePA treated cells. DSePA treatment significantly increased the levels of all the above markers. Moreover, DSePA did not alter the expression and phosphorylation (Ser15) of p53 but caused a significant damage to mitochondria. Pharmacological modulation of GSH level by BSO and NAC in DSePA treated cells led to partial abrogation and augmentation of cell kill respectively. This established the role of reductive stress as a trigger for the apoptosis induced by DSePA treatment. Finally, in vitro anticancer activity of DSePA was also corroborated by its in vivo efficacy of suppressing the growth of A549 derived xenograft tumor in SCID mice. In conclusion, above results suggest that DSePA induces apoptosis in a p53 independent manner by involving extrinsic and intrinsic pathways together with ER stress which can an interesting strategy for lung cancer therapy.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Proteína Supressora de Tumor p53 / Apoptose Limite: Animals / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Proteína Supressora de Tumor p53 / Apoptose Limite: Animals / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article