PMID- 35012642 OWN - NLM STAT- MEDLINE DCOM- 20220323 LR - 20220531 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 13 IP - 1 DP - 2022 Jan 10 TI - Thymosin beta-4 improves endothelial function and reparative potency of diabetic endothelial cells differentiated from patient induced pluripotent stem cells. PG - 13 LID - 10.1186/s13287-021-02687-x [doi] LID - 13 AB - BACKGROUND: Prior studies show that signature phenotypes of diabetic human induced pluripotent stem cells derived endothelial cells (dia-hiPSC-ECs) are disrupted glycine homeostasis, increased senescence, impaired mitochondrial function and angiogenic potential as compared with healthy hiPSC-ECs. In the current study, we aimed to assess the role of thymosin beta-4 (Tb-4) on endothelial function using dia-hiPSC-ECs as disease model of endothelial dysfunction. METHODS AND RESULTS: Using dia-hiPSC-ECs as models of endothelial dysfunction, we determined the effect of Tb-4 on cell proliferation, senescence, cyto-protection, protein expression of intercellular adhesion molecule-1 (ICAM-1), secretion of endothelin-1 and MMP-1, mitochondrial membrane potential, and cyto-protection in vitro and angiogenic potential for treatment of ischemic limb disease in a mouse model of type 2 diabetes mellitus (T2DM) in vivo. We found that 600 ng/mL Tb4 significantly up-regulated AKT activity and Bcl-XL protein expression, enhanced dia-hiPSC-EC viability and proliferation, limited senescence, reduced endothelin-1 and MMP-1 secretion, and improved reparative potency of dia-hiPSC-ECs for treatment of ischemic limb disease in mice with T2DM. However, Tb4 had no effect on improving mitochondrial membrane potential and glycine homeostasis and reducing intercellular adhesion molecule-1 protein expression in dia-hiPSC-ECs. CONCLUSIONS: Tb-4 improves endothelial dysfunction through enhancing hiPSC-EC viability, reducing senescence and endothelin-1 production, and improves angiogenic potency in diabetes. CI - (c) 2022. The Author(s). FAU - Su, Liping AU - Su L AD - National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, 169609, Singapore. FAU - Kong, Xiaocen AU - Kong X AD - Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210029, China. FAU - Loo, Szejie AU - Loo S AD - National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, 169609, Singapore. FAU - Gao, Yu AU - Gao Y AD - Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Liu, Bingli AU - Liu B AD - Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210029, China. FAU - Su, Xiaofei AU - Su X AD - Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210029, China. FAU - Dalan, Rinkoo AU - Dalan R AD - Department of Endocrinology, Tan Tock Seng Hospital, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore. FAU - Ma, Jianhua AU - Ma J AD - Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210029, China. majianhua@china.com. FAU - Ye, Lei AU - Ye L AUID- ORCID: 0000-0001-5039-6224 AD - National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, 169609, Singapore. yeleislp@yahoo.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220110 PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 549LM7U24W (thymosin beta(4)) RN - 61512-21-8 (Thymosin) SB - IM MH - Animals MH - Cell Differentiation/drug effects MH - *Diabetes Mellitus, Type 2/metabolism MH - Endothelial Cells/drug effects/metabolism MH - Humans MH - *Induced Pluripotent Stem Cells/drug effects/metabolism MH - Mice MH - *Thymosin/genetics/pharmacology PMC - PMC8751378 OTO - NOTNLM OT - Endothelial function OT - Endothelium OT - Mitochondrial function OT - Senescence OT - Thymosin COIS- The authors declare that they have no competing interests. EDAT- 2022/01/12 06:00 MHDA- 2022/03/24 06:00 PMCR- 2022/01/10 CRDT- 2022/01/11 05:56 PHST- 2021/10/14 00:00 [received] PHST- 2021/12/17 00:00 [accepted] PHST- 2022/01/11 05:56 [entrez] PHST- 2022/01/12 06:00 [pubmed] PHST- 2022/03/24 06:00 [medline] PHST- 2022/01/10 00:00 [pmc-release] AID - 10.1186/s13287-021-02687-x [pii] AID - 2687 [pii] AID - 10.1186/s13287-021-02687-x [doi] PST - epublish SO - Stem Cell Res Ther. 2022 Jan 10;13(1):13. doi: 10.1186/s13287-021-02687-x.