PMID- 24004644 OWN - NLM STAT- MEDLINE DCOM- 20140911 LR - 20211021 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 4 IP - 5 DP - 2013 TI - Mesenchymal stem cells protect podocytes from apoptosis induced by high glucose via secretion of epithelial growth factor. PG - 103 AB - INTRODUCTION: The apoptosis and subsequent injury of podocytes plays a pathogenic role in diabetic nephropathy (DN). Mesenchymal stem cells (MSCs) are promising therapeutic cells for preventing apoptosis and reducing cellular injury. Our previous study found that MSCs could protect kidneys from diabetes-induced injury without obvious engraftment. So we evaluated the effects of human adipose-derived MSCs (hAd-MSCs) on podocytic apoptosis and injury induced by high glucose (HG) and the underlying mechanisms. METHODS: We used flow cytometry, Western blot and confocal fluorescence microscopy to study podocytic apoptosis and injury induced by HG at 24 hours, 48 hours, and 72 hours in the presence or absence of MSC-conditioned medium (CM). An antibody-based cytokine array was used to identify the mediating factor, which was verified by adding the neutralizing antibody (NtAb) to block its function or adding the recombinant cytokine to the medium to induce its function. RESULTS: hAd-MSC-CM reduced podocytic apoptosis in a dose-dependent manner, decreased the expression of podocytic cleaved caspase-3, and prevented the reduced expression and maintained the normal arrangement of podocytic synaptopodin and nephrin. However, human embryonic lung cell (Wi38)-CM failed to ameliorate podocytic apoptosis or injury. Twelve cytokines with concentration ratios (MSC-CM/Wi38-CM) >10-fold were identified. Epithelial growth factor (EGF) was singled out for its known ability to prevent apoptosis. Recombinant human EGF (rhEGF) prevented podocytic apoptosis and injury similarly to hAd-MSC-CM but, upon blockade of EGF, the beneficial effect of hAd-MSC-CM decreased dramatically. CONCLUSIONS: hAd-MSCs prevent podocytic apoptosis and injury induced by HG, mainly through secreting soluble EG. FAU - Li, Diangeng AU - Li D FAU - Wang, Nan AU - Wang N FAU - Zhang, Li AU - Zhang L FAU - Hanyu, Zhu AU - Hanyu Z FAU - Xueyuan, Bai AU - Xueyuan B FAU - Fu, Bo AU - Fu B FAU - Shaoyuan, Cui AU - Shaoyuan C FAU - Zhang, Weiguang AU - Zhang W FAU - Xuefeng, Sun AU - Xuefeng S FAU - Li, Rongshan AU - Li R FAU - Chen, Xiangmei AU - Chen X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 0 (Antibodies, Neutralizing) RN - 0 (Culture Media, Conditioned) RN - 0 (Cytokines) RN - 0 (Membrane Proteins) RN - 0 (Recombinant Proteins) RN - 0 (Synaptophysin) RN - 0 (nephrin) RN - 62229-50-9 (Epidermal Growth Factor) RN - EC 3.4.22.- (Caspase 3) RN - IY9XDZ35W2 (Glucose) SB - IM CIN - Stem Cell Res Ther. 2013;4(5):119. PMID: 24083666 MH - Adipose Tissue/cytology MH - Animals MH - Antibodies, Neutralizing/immunology MH - Apoptosis/*drug effects MH - Caspase 3/metabolism MH - Cells, Cultured MH - Culture Media, Conditioned/pharmacology MH - Cytokines/analysis MH - Epidermal Growth Factor/genetics/*metabolism MH - Glucose/*pharmacology MH - Humans MH - Membrane Proteins/metabolism MH - Mesenchymal Stem Cells/cytology/*metabolism MH - Mice MH - Podocytes/cytology/*drug effects/metabolism MH - Recombinant Proteins/biosynthesis/genetics/pharmacology MH - Synaptophysin/metabolism MH - Time Factors PMC - PMC3856604 EDAT- 2013/09/06 06:00 MHDA- 2014/09/12 06:00 PMCR- 2013/09/01 CRDT- 2013/09/06 06:00 PHST- 2012/12/19 00:00 [received] PHST- 2013/08/02 00:00 [revised] PHST- 2013/08/23 00:00 [accepted] PHST- 2013/09/06 06:00 [entrez] PHST- 2013/09/06 06:00 [pubmed] PHST- 2014/09/12 06:00 [medline] PHST- 2013/09/01 00:00 [pmc-release] AID - scrt314 [pii] AID - 10.1186/scrt314 [doi] PST - ppublish SO - Stem Cell Res Ther. 2013;4(5):103. doi: 10.1186/scrt314.