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Kämmerer PW, Engel V, Plocksties F, Jonitz-Heincke A, Timmermann D, Engel N, Frerich B, Bader R, Thiem DGE, Skorska A, David R, Al-Nawas B, Dau M. Continuous Electrical Stimulation Affects Initial Growth and Proliferation of Adipose-Derived Stem Cells. Biomedicines 2020; 8:biomedicines8110482. [PMID: 33171654 PMCID: PMC7695310 DOI: 10.3390/biomedicines8110482] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 12/14/2022] Open
Abstract
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.
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Affiliation(s)
- Peer W. Kämmerer
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Mainz, 55131 Mainz, Germany; (D.G.E.T.); (B.A.-N.)
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany; (V.E.); (N.E.); (B.F.); (M.D.)
- Correspondence: ; Tel.: +49-6131-17-3752
| | - Vivien Engel
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany; (V.E.); (N.E.); (B.F.); (M.D.)
| | - Franz Plocksties
- Institute of Applied Microelectronics and Computer Engineering, University of Rostock, 18051 Rostock, Germany; (F.P.); (D.T.)
| | - Anika Jonitz-Heincke
- Department of Orthopedics, University Medical Center Rostock, 18057 Rostock, Germany; (A.J.-H.); (R.B.)
| | - Dirk Timmermann
- Institute of Applied Microelectronics and Computer Engineering, University of Rostock, 18051 Rostock, Germany; (F.P.); (D.T.)
| | - Nadja Engel
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany; (V.E.); (N.E.); (B.F.); (M.D.)
| | - Bernhard Frerich
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany; (V.E.); (N.E.); (B.F.); (M.D.)
| | - Rainer Bader
- Department of Orthopedics, University Medical Center Rostock, 18057 Rostock, Germany; (A.J.-H.); (R.B.)
| | - Daniel G. E. Thiem
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Mainz, 55131 Mainz, Germany; (D.G.E.T.); (B.A.-N.)
| | - Anna Skorska
- Department of Cardiac Surgery, University Medical Center Rostock, 18059 Rostock, Germany; (A.S.); (R.D.)
- Department Life, Light & Matter (LL&M), University of Rostock, 18059 Rostock, Germany
| | - Robert David
- Department of Cardiac Surgery, University Medical Center Rostock, 18059 Rostock, Germany; (A.S.); (R.D.)
- Department Life, Light & Matter (LL&M), University of Rostock, 18059 Rostock, Germany
| | - Bilal Al-Nawas
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Mainz, 55131 Mainz, Germany; (D.G.E.T.); (B.A.-N.)
| | - Michael Dau
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany; (V.E.); (N.E.); (B.F.); (M.D.)
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