Effect of Acidosis on Adipose-derived Stem Cell Impairment and Gene Expression

Overview

Journal Regen Ther

Date 2024 Feb 9

PMID 38333090

Authors

Kun Huang

Qinqin Wang

Huilong Qu

Xinyu Hu

Wenhao Niu

Anna Hultgardh-Nilsson

Jan Nilsson

Chun Liang

Yihong Chen

Affiliations

Soon will be listed here.

Abstract

Based on disappointing results of stem cell-based application in clinical trials for patients with critical limb ischemia, we hypothesized that the acidic environment might be the key factor limiting cell survival and function. In the present study, we used microdialysis to determine presence of acidosis and metabolic imbalance in critical ischemia. Moreover, we explored the effect of extracellular acidosis on adipose-derived stem cells (ADSCs) at molecular and transcriptional level. Our data demonstrate that low pH negatively regulates cell proliferation and survival, also, it results in cell cycle arrest, mitochondrial dynamics disorder, DNA damage as well as the impairment of proangiogenic function in a pH-dependent manner. Further transcriptome profiling identified the pivotal signaling pathways and hub genes in response to acidosis. Collectively, these findings provide strong evidences for a critical role of acidosis in ADSCs impairment with ischemic condition and suggest treatments focus on tissue pH balance and acidosis-mediated hub genes may have therapeutic potential in stem cell-based application.

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