<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Nampt (Nicotinamidephosphoribosyltransferase - also known as visfatin/PBEF) is the enzyme that regulates the NAD+ level, therefore influencing many metabolic pathways within the cells. As circulating cytokine, extracellular Nampt (eNampt) exerts pro-inflammatory, pro-chemotactic, pro-angiogenic and insulin-like effects; however the mechanism of eNampt action is still unclear.Earlier studies have shown that eNampt exerts a stimulating effect on the proliferation of many cancer cell lines. However, the effect of this cytokine on cell proliferation in primary culture is little known. Therefore, the aim of the study was to analyse the influence of eNampt on the proliferation of rat adrenocortical cells in primary culture and to investigate similar influence of eNampt on the line H295R of human adrenal corticocarcinoma cells. Proliferation of the examined cells was assessed using the RTCA (Real Time Cell Analyzer) method. The obtained results indicate that eNampt stimulates the proliferation of H295R cells, but does not change the proliferation of cultured rat adrenocortical cells. In primary culture of rat adrenocortical cells, Fk866 (specific Nampt inhibitor) does not modify the rate of proliferation of tested cells. In H295R cells the addition of Fk866 alone inhibits proliferative activity and stimulates apoptosis. Fk866 also inhibits the stimulating effect of eNampt on H295R cell proliferation.</p></abstract>

Nampt (Nicotinamidephosphoribosyltransferase - also known as visfatin/PBEF) is the enzyme that regulates the NAD+ level, therefore influencing many metabolic pathways within the cells. As circulating cytokine, extracellular Nampt (eNampt) exerts pro-inflammatory, pro-chemotactic, pro-angiogenic and insulin-like effects; however the mechanism of eNampt action is still unclear.Earlier studies have shown that eNampt exerts a stimulating effect on the proliferation of many cancer cell lines. However, the effect of this cytokine on cell proliferation in primary culture is little known. Therefore, the aim of the study was to analyse the influence of eNampt on the proliferation of rat adrenocortical cells in primary culture and to investigate similar influence of eNampt on the line H295R of human adrenal corticocarcinoma cells. Proliferation of the examined cells was assessed using the RTCA (Real Time Cell Analyzer) method. The obtained results indicate that eNampt stimulates the proliferation of H295R cells, but does not change the proliferation of cultured rat adrenocortical cells. In primary culture of rat adrenocortical cells, Fk866 (specific Nampt inhibitor) does not modify the rate of proliferation of tested cells. In H295R cells the addition of Fk866 alone inhibits proliferative activity and stimulates apoptosis. Fk866 also inhibits the stimulating effect of eNampt on H295R cell proliferation.

Nampt (Visfatin) Influence on Proliferative Activity of Normal Rat Adrenocortical Cells and Human Adrenal Corticocarcinoma Nci-H295r Cells

Medical Journal of Cell Biology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Nampt (Nicotinamidephosphoribosyltransferase - also known as visfatin/PBEF) is the enzyme that regulates the NAD+ level, therefore influencing many metabolic...

Nampt (Visfatin) Influence on Proliferative Activity of Normal Rat Adrenocortical Cells and Human Adrenal Corticocarcinoma Nci-H295r Cells

Published Online: Sep 26, 2018

Page range: 33 - 38

Received: Apr 12, 2018

Accepted: Apr 06, 2018

DOI: https://doi.org/10.2478/acb-2018-0007

Keywords
Nampt, Visfatin, H295R, adrenals, adrenocortical, proliferation

© 2018 Piotr Celichowski, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Nampt (Visfatin) Influence on Proliferative Activity of Normal Rat Adrenocortical Cells and Human Adrenal Corticocarcinoma Nci-H295r Cells

Published Online: Sep 26, 2018

Page range: 33 - 38

Received: Apr 12, 2018

Accepted: Apr 06, 2018

DOI: https://doi.org/10.2478/acb-2018-0007

KeywordsNampt, Visfatin, H295R, adrenals, adrenocortical, proliferation

© 2018 Piotr Celichowski, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Nampt, Visfatin, H295R, adrenals, adrenocortical, proliferation