Home FOR AUTHORS General Physiology and Biophysics 2024 General Physiology and Biophysics Vol.43, No.4, p. 321–333, 2024

Journal info


Founded: 1982
ISSN 1338-4325 (online)
ISSN 0231-5882 (print)
Published in English,
6 times per year

Aims and Scope
Editorial Info
Submission Guidelines

Select Journal







Webshop Cart

Your Cart is currently empty.
Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

General Physiology and Biophysics Vol.43, No.4, p. 321–333, 2024

Title: Interference with sphingosine kinase-1 reduces the hydrogen peroxide-induced oxidative stress damage in melanocytes through four and a half LIM domains 2
Author: Kuo-Hsiang Liao, Kuo-Liang Liao
Abstract: Vitiligo is featured by manifestation of white maculae and primarily results from oxidative stress. Sphingosine kinase-1 (SPHK1) participates in oxidative stress. This paper was devised to explore the role of SPHK1 in vitiligo and to disclose the mechanism. PIG1 cell viability was appraised utilizing cell counting kit-8 assay while Western blot detected SPHK1 and four and a half LIM domains 2 (FHL2). The transduction efficacy of small interfering RNA (siRNA)-SPHK1, siRNA-FHL2 and pcDNA3.1 plasmid overexpressing FHL2 (Ov-FHL2) was checked using Western blot. Flow cytometry detected cell apoptotisis. Western blot detected mitochondrial cytochrome c (Mit-Cyt-c) and cytosolic cytochrome c (Cyto-Cyt-c). Dichloro-dihydro-fluorescein diacetate (DCFH-DA) detected reactive oxygen species (ROS) activity while oxidative stress markers were evaluated using corresponding assay kits. SPHK1 expression was discovered to be increased in hydrogen peroxide (H2O2)-challenged PIG1 cells and SPHK1 interference alleviated H2O2-challenged viability damage, apoptosis, oxidative stress and FHL2 expression in PIG1 cells. FHL2 depletion could suppress viability damage, apoptosis and oxidative stress in H2O2-challenged PIG1 cells. Rescue experiments demonstrated that the suppressive impacts of SPHK1 deficiency on PIG1 cell viability, apoptosis and oxidative stress induced by H2O2 were offset by FHL2 overexpression. Collectively, SPHK1 knockdown protected against vitiligo via the regulation of FHL2.
Keywords: SPHK1 — Melanocytes — Oxidative stress — FHL2 — Vitiligo
Published online: 29-Jun-2024
Year: 2024, Volume: 43, Issue: 4 Page From: 321, Page To: 333
doi:10.4149/gpb_2024011


download file


© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.