PMID- 32513263 OWN - NLM STAT- MEDLINE DCOM- 20210618 LR - 20210618 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 11 IP - 1 DP - 2020 Jun 8 TI - Plasma membrane vesicles of human umbilical cord mesenchymal stem cells ameliorate acetaminophen-induced damage in HepG2 cells: a novel stem cell therapy. PG - 225 LID - 10.1186/s13287-020-01738-z [doi] LID - 225 AB - BACKGROUND: Acetaminophen (APAP) overdose is the common cause of acute liver failure (ALF) due to the oxidative damage of multiple cellular components. This study aimed to investigate whether plasma membrane vesicles (PMVs) from human umbilical cord mesenchymal stem cells (hUCMSCs) could be exploited as a novel stem cell therapy for APAP-induced liver injury. METHODS: PMVs from hUCMSCs were prepared with an improved procedure including a chemical enucleation step followed by a mechanical extrusion. PMVs of hUCMSCs were characterized and supplemented to hepatocyte cultures. Rescue of APAP-induced hepatocyte damage was evaluated. RESULTS: The hUCMSCs displayed typical fibroblastic morphology and multipotency when cultivated under adipogenic, osteogenic, or chondrogenic conditions. PMVs of hUCMSCs maintained the stem cell phenotype, including the presence of CD13, CD29, CD44, CD73, and HLA-ABC, but the absence of CD45, CD117, CD31, CD34, and HLA-DR on the plasma membrane surface. RT-PCR and transcriptomic analyses showed that PMVs were similar to hUCMSCs in terms of mRNA profile, including the expression of stemness genes GATA4/5/6, Nanog, and Oct1/2/4. GO term analysis showed that the most prominent reduced transcripts in PMVs belong to integral membrane components, extracellular vesicular exosome, and extracellular matrix. Immunofluorescence labeling/staining and confocal microscopy assays showed that PMVs enclosed cellular organelles, including mitochondria, lysosomes, proteasomes, and endoplasmic reticula. Incorporation of the fusogenic VSV-G viral membrane glycoprotein stimulated the endosomal release of PMV contents into the cytoplasm. Further, the addition of PMVs and a mitochondrial-targeted antioxidant Mito-Tempo into cultures of APAP-treated HepG2 cells resulted in reduced cell death, enhanced viability, and increased mitochondrial membrane potential. Lastly, this study demonstrated that the redox state and activities of aminotransferases were restored in APAP-treated HepG2 cells. CONCLUSIONS: The results suggest that PMVs from hUCMSCs could be used as a novel stem cell therapy for the treatment of APAP-induced liver injury. FAU - Lin, Mei-Jia AU - Lin MJ AD - Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, 515063, Guangdong, China. FAU - Li, Shuang AU - Li S AD - Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, 515063, Guangdong, China. FAU - Yang, Lu-Jun AU - Yang LJ AD - Research Center for Translational Medicine, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, China. yanglujun726@hotmail.com. FAU - Ye, Dan-Yan AU - Ye DY AD - Research Center for Translational Medicine, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, China. FAU - Xu, Li-Qun AU - Xu LQ AD - Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, 515063, Guangdong, China. FAU - Zhang, Xin AU - Zhang X AD - Laboratory of Molecular Cardiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong, China. FAU - Sun, Ping-Nan AU - Sun PN AD - Stem Cell Research Center, Shantou University Medical College, Shantou, 515041, Guangdong, China. FAU - Wei, Chi-Ju AU - Wei CJ AD - Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, 515063, Guangdong, China. chijuwei@stu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200608 PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 362O9ITL9D (Acetaminophen) SB - IM MH - *Acetaminophen/toxicity MH - Cell Differentiation MH - Cell Membrane MH - Cell- and Tissue-Based Therapy MH - Hep G2 Cells MH - Humans MH - *Mesenchymal Stem Cells MH - Umbilical Cord PMC - PMC7278066 OTO - NOTNLM OT - Acetaminophen (APAP) OT - Acute liver failure (ALF) OT - Human umbilical cord mesenchymal stem cells (hUCMSCs) OT - Plasma membrane vesicles (PMVs) OT - Stem cell therapy COIS- The authors declare that they have no competing interests. EDAT- 2020/06/10 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/06/08 CRDT- 2020/06/10 06:00 PHST- 2020/02/25 00:00 [received] PHST- 2020/05/19 00:00 [accepted] PHST- 2020/05/12 00:00 [revised] PHST- 2020/06/10 06:00 [entrez] PHST- 2020/06/10 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/06/08 00:00 [pmc-release] AID - 10.1186/s13287-020-01738-z [pii] AID - 1738 [pii] AID - 10.1186/s13287-020-01738-z [doi] PST - epublish SO - Stem Cell Res Ther. 2020 Jun 8;11(1):225. doi: 10.1186/s13287-020-01738-z.