Protective Role of SOCS3 Modified Bone Marrow Mesenchymal Stem Cells in Hypoxia-Induced Injury of PC12 Cells

Overview

Journal J Mol Neurosci

Specialties Molecular Biology
Neurology

Date 2019 Jan 17

PMID 30648230

Citations 9

Authors

Bin Zhou

Hong-Yun Liu

Bao-Lian Zhu

Affiliations

Soon will be listed here.

Abstract

We attempted to explore the possible effects of SOCS3 (suppressor of cytokine signaling 3)-modified bone marrow mesenchymal stem cells (BMSCs) on the hypoxic injury of rat adrenal gland pheochromocytoma (PC-12) cells. PC12 cells were cultured with EGFP (enhanced green fluorescent protein)-BMSCs and SOCS3-BMSCs respectively under hypoxia in vitro and classified into control, hypoxia, EGFP-BMSCs, and SOCS3-BMSC groups. CCK-8, Hoechst 33258 staining, and Annexin V-FITC/PI staining were assessed to measure the viability and apoptosis of hypoxia-induced PC12 cells. The JAK/STAT3 pathway- and apoptosis-related proteins were identified by Western blot. Finally, rat models of permanent middle cerebral artery occlusion (pMCAO) were established to verify the potential influences of SOCS3-BMSCs in vivo. SOCS3-modified BMSCs can stably express SOCS3 protein. EGFP-BMSCs, especially SOCS3-BMSCs, can improve cell viability and SOD content, and reduce cell apoptosis, LDH viability, and MDA content in hypoxia-induced PC12 cells (all P < 0.05). Besides, EGFP-BMSCs and SOCS3-BMSCs decreased cleaved caspase-3 level and increased Bcl-2/Bax of hypoxia-induced PC12 cells, while SOCS3-BMSCs could also elevate SOCS3 protein and reduce p-STAT3 protein level in hypoxia-induced PC12 cells (all P < 0.05). In vivo experiments confirmed that EGFP-BMSCs, particularly SOCS3-BMSCs, could ameliorate infarct size and inhibit neuronal apoptosis of different degrees in pMACO rats (all P < 0.05). SOCS3-modified BMSCs can alleviate oxidative stress, improve cell viability, and reduce neuronal apoptosis by downregulation of JAK/STAT3 pathway, thereby exerting the neuroprotective role in ischemic brain injury.

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