Sodium/calcium exchanger is involved in apoptosis induced by H2S in tumor cells through decreased levels of intracellular pH
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
30849492
DOI
10.1016/j.niox.2019.02.011
PII: S1089-8603(18)30334-3
Knihovny.cz E-resources
- Keywords
- Apoptosis, Hydrogen sulfide, Intracellular acidification, Sodium/calcium exchanger, Sodium/hydrogen exchanger,
- MeSH
- Antineoplastic Agents pharmacology MeSH
- Apoptosis drug effects MeSH
- Hydrogen-Ion Concentration MeSH
- Humans MeSH
- Morpholines pharmacology MeSH
- Mice, Nude MeSH
- Cell Line, Tumor MeSH
- Organothiophosphorus Compounds pharmacology MeSH
- Cell Proliferation drug effects MeSH
- Sodium-Calcium Exchanger metabolism MeSH
- Sodium-Hydrogen Exchanger 1 metabolism MeSH
- Hydrogen Sulfide metabolism MeSH
- Animals MeSH
- Check Tag
- Humans MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Antineoplastic Agents MeSH
- GYY 4137 MeSH Browser
- Morpholines MeSH
- NCX1 protein, mouse MeSH Browser
- Organothiophosphorus Compounds MeSH
- Sodium-Calcium Exchanger MeSH
- SLC9A1 protein, human MeSH Browser
- Slc9a1 protein, mouse MeSH Browser
- Sodium-Hydrogen Exchanger 1 MeSH
- sodium-calcium exchanger 1 MeSH Browser
- Hydrogen Sulfide MeSH
We explored possibility that sodium/calcium exchanger 1 (NCX1) is involved in pH modulation and apoptosis induction in GYY4137 treated cells. We have shown that although 10 days treatment with GYY4137 did not significantly decreased volume of tumors induced by colorectal cancer DLD1 cells in nude mice, it already induced apoptosis in these tumors. Treatment of DLD1 and ovarian cancer A2780 cells with GYY4137 resulted in intracellular acidification in a concentration-dependent manner. We observed increased mRNA and protein expression of both, NCX1 and sodium/hydrogen exchanger 1 (NHE1) in DLD1-induced tumors from GYY4137-treated mice. NCX1 was coupled with NHE1 in A2780 and DLD1 cells and this complex partially disintegrated after GYY4137 treatment. We proposed that intracellular acidification is due to uncoupling of NCX1/NHE1 complex rather than blocking of the reverse mode of NCX1, probably due to internalization of NHE1. Results might contribute to understanding molecular mechanism of H2S-induced apoptosis in tumor cells.
Cancer Research Institute Biomedical Research Center Slovak Academy of Sciences Bratislava Slovakia
Department of Physiology Faculty of Medicine Masaryk University Brno Czech Republic
References provided by Crossref.org
