Expression of sperm-specific glyceraldehyde-3-phosphate dehydrogenase in melanoma cells changes their energy metabolism

   
Melnikova A.K.1 , Kuravsky M.L.2, Kulikova K.V.3, Sevostyanova I.A.2, Muronetz V.I.4

1. Faculty of Bioengineering and Bioinformatics Moscow State University, Moscow, Russia
2. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
3. Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
4. Faculty of Bioengineering and Bioinformatics Moscow State University, Moscow, Russia; Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
Section: Experimental Study
DOI: 10.18097/PBMC20206605372      PubMed Id: 33140730
Year: 2020  Volume: 66  Issue: 5  Pages: 372-377
The somatic isoform of the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH; EC1.2.1.12) is involved in such crucial for cancer cells development pathways as induction of apoptosis and glycolytic regulation. At the same time, sperm-specific isoform (GAPDHS) does not exhibit all the same functions as somatic enzyme. The expression of sperm-specific GAPDH without N-terminal domain in some melanoma cells along with somatic isoenzyme, shown in our previous work, has led to the proposal of this unusual enzyme's possible role in regulation of cancer cells glycolysis. In the presented work we have tested production of GAPDHS in 13 additional melanoma cell lines by immunoblotting. We have also gathered data on energy metabolism in 5 selected cell lines by evaluation of glucose uptake and lactate production in differing conditions. We have demonstrated that in standard cultivation media glucose uptake by MelP cells, producing substantial amounts of GAPDHS protein was higher than in MelKor cells, producing lesser amounts of GAPDHS. All other analyzed cell lines that do not produce GAPDHS (MelMS, MelSi and Malme3M) had even a lower glucose uptake rate.
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Keywords: glyceraldehyde-3-phosphate dehydrogenase, sperm-specific enzymes, melanoma, glycolysis
Citation:

Melnikova, A. K., Kuravsky, M. L., Kulikova, K. V., Sevostyanova, I. A., Muronetz, V. I. (2020). Expression of sperm-specific glyceraldehyde-3-phosphate dehydrogenase in melanoma cells changes their energy metabolism. Biomeditsinskaya khimiya, 66(5), 372-377.
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