Inhibition of mitochondrial metabolism leads to selective eradication of cells adapted to acidic microenvironment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F21%3A43922533" target="_blank" >RIV/60461373:22330/21:43922533 - isvavai.cz</a>

Result on the web

<a href="http://file:///C:/Users/kasparkh/AppData/Local/Temp/ijms-22-10790.pdf" target="_blank" >http://file:///C:/Users/kasparkh/AppData/Local/Temp/ijms-22-10790.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ijms221910790" target="_blank" >10.3390/ijms221910790</a>

Result language

angličtina

Original language name

Inhibition of mitochondrial metabolism leads to selective eradication of cells adapted to acidic microenvironment

Original language description

Metabolic transformation of cancer cells leads to the accumulation of lactate and significant acidification in the tumor microenvironment. Both lactate and acidosis have a well-documented impact on cancer progression and negative patient prognosis. Here, we report that cancer cells adapted to acidosis are significantly more sensitive to oxidative damage induced by hydrogen peroxide, high-dose ascorbate, and photodynamic therapy. Higher lactate concentrations abrogate the sensitization. Mechanistically, acidosis leads to a drop in antioxidant capacity caused by a compromised supply of nicotinamide adenine dinucleotide phosphate (NADPH) derived from glucose metabolism. However, lactate metabolism in the Krebs cycle restores NADPH supply and antioxidant capacity. CPI-613 (devimistat), an anticancer drug candidate, selectively eradicates the cells adapted to acidosis through inhibition of the Krebs cycle and induction of oxidative stress while completely abrogating the protective effect of lactate. Simultaneous cell treatment with tetracycline, an inhibitor of the mitochondrial proteosynthesis, further enhances the cytotoxic effect of CPI-613 under acidosis and in tumor spheroids. While there have been numerous attempts to treat cancer by neutralizing the pH of the tumor microenvironment, we alternatively suggest considering tumor acidosis as the Achilles’ heel of cancer as it enables selective therapeutic induction of lethal oxidative stress. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10608 - Biochemistry and molecular biology

Project

<a href="/en/project/GA21-11688S" target="_blank" >GA21-11688S: Core-shell nanoparticles for targeted X-ray-induced photodynamic therapy</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Molecular Sciences

ISSN

1661-6596

e-ISSN

—

Volume of the periodical

22

Issue of the periodical within the volume

19

Country of publishing house

CH - SWITZERLAND

Number of pages

20

Pages from-to

—

UT code for WoS article

000713203300001

EID of the result in the Scopus database

2-s2.0-85116495539