Continuous Electrical Stimulation Affects Initial Growth and Proliferation of Adipose-Derived Stem Cells

Autor: Peer W. Kämmerer, Vivien Engel, Franz Plocksties, Anika Jonitz-Heincke, Dirk Timmermann, Nadja Engel, Bernhard Frerich, Rainer Bader, Daniel G. E. Thiem, Anna Skorska, Robert David, Bilal Al-Nawas, Michael Dau
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Biomedicines, Vol 8, Iss 11, p 482 (2020)
Druh dokumentu: article
ISSN: 2227-9059
DOI: 10.3390/biomedicines8110482
Popis: The aim of the study was to establish electrical stimulation parameters in order to improve cell growth and viability of human adipose-derived stem cells (hADSC) when compared to non-stimulated cells in vitro. hADSC were exposed to continuous electrical stimulation with 1.7 V AC/20 Hz. After 24, 72 h and 7 days, cell number, cellular surface coverage and cell proliferation were assessed. In addition, cell cycle analysis was carried out after 3 and 7 days. After 24 h, no significant alterations were observed for stimulated cells. At day 3, stimulated cells showed a 4.5-fold increase in cell numbers, a 2.7-fold increase in cellular surface coverage and a significantly increased proliferation. Via cell cycle analysis, a significant increase in the G2/M phase was monitored for stimulated cells. Contrastingly, after 7 days, the non-stimulated group exhibited a 11-fold increase in cell numbers and a 4-fold increase in cellular surface coverage as well as a significant increase in cell proliferation. Moreover, the stimulated cells displayed a shift to the G1 and sub-G1 phase, indicating for metabolic arrest and apoptosis initiation. In accordance, continuous electrical stimulation of hADSC led to a significantly increased cell growth and proliferation after 3 days. However, longer stimulation periods such as 7 days caused an opposite result indicating initiation of apoptosis.
Databáze: Directory of Open Access Journals