PMID- 23759293 OWN - NLM STAT- MEDLINE DCOM- 20140423 LR - 20181202 IS - 1095-953X (Electronic) IS - 0969-9961 (Linking) VI - 58 DP - 2013 Oct TI - Immune following suppression mesenchymal stem cell transplantation in the ischemic brain is mediated by TGF-beta. PG - 249-57 LID - S0969-9961(13)00168-X [pii] LID - 10.1016/j.nbd.2013.06.001 [doi] AB - Transplantation of mesenchymal stem cells (MSCs) has been shown to enhance the recovery of brain functions following ischemic injury. Although immune modulation has been suggested to be one of the mechanisms, the molecular mechanisms underlying improved recovery has not been clearly identified. Here, we report that MSCs secrete transforming growth factor-beta (TGF-beta) to suppress immune propagation in the ischemic rat brain. Ischemic stroke caused global death of resident cells in the infarcted area, elevated the monocyte chemoattractant protein-1 (MCP-1) level, and evoked massive infiltration of circulating CD68+ immune cells through the impaired blood-brain barrier. Transplantation of MSCs at day 3 post-ischemia blocked the subsequent upregulation of MCP-1 in the ischemic area and the infiltration of additional CD68+ immune cells. MSC-conditioned media decreased the migration and MCP-1 production of freshly isolated immune cells in vitro, and this effect was blocked by an inhibitor of TGF-beta signaling or an anti-TGF-beta neutralizing antibody. Finally, transplantation of TGF-beta1-silenced MSCs failed to attenuate the infiltration of CD68+ cells into the ischemic brain, and was associated with only minor improvements in motor function. These results indicate that TGF-beta is key to the ability of MSCs to beneficially attenuate immune reactions in the ischemic brain. Our findings offer insight into the interactions between allogeneic MSCs and the host immune system, reinforcing the prospective clinical value of using MSCs in the treatment of neurological disorders involving inflammation-mediated secondary damage. CI - Copyright (c) 2013. Published by Elsevier Inc. FAU - Yoo, Seung-Wan AU - Yoo SW AD - Department of Anatomy, Ajou University School of Medicine, Suwon, South Korea. FAU - Chang, Da-Young AU - Chang DY FAU - Lee, Hye-Sun AU - Lee HS FAU - Kim, Gyu-Hee AU - Kim GH FAU - Park, Jin-Sung AU - Park JS FAU - Ryu, Buom-Yong AU - Ryu BY FAU - Joe, Eun-Hye AU - Joe EH FAU - Lee, Young-Don AU - Lee YD FAU - Kim, Sung-Soo AU - Kim SS FAU - Suh-Kim, Haeyoung AU - Suh-Kim H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130610 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Aif1 protein, rat) RN - 0 (Antigens, CD) RN - 0 (Calcium-Binding Proteins) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Microfilament Proteins) RN - 0 (Transforming Growth Factor beta) RN - EC 1.11.1.7 (Peroxidase) SB - IM MH - Animals MH - Antigens, CD/metabolism MH - Blood-Brain Barrier/physiopathology MH - Brain Infarction/etiology MH - Calcium-Binding Proteins/metabolism MH - Cell Movement MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Disease Models, Animal MH - Encephalitis/etiology MH - Gene Expression Regulation/immunology/physiology MH - Infarction, Middle Cerebral Artery/complications/*immunology/*surgery MH - Male MH - *Mesenchymal Stem Cell Transplantation MH - Mesenchymal Stem Cells/*metabolism MH - Microfilament Proteins/metabolism MH - Peroxidase/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors MH - Transforming Growth Factor beta/immunology/*metabolism OTO - NOTNLM OT - Cell death OT - Inflammation OT - Mesenchymal stem cell OT - Microglia OT - Stroke OT - TGF-beta EDAT- 2013/06/14 06:00 MHDA- 2014/04/24 06:00 CRDT- 2013/06/14 06:00 PHST- 2013/02/01 00:00 [received] PHST- 2013/05/22 00:00 [revised] PHST- 2013/06/01 00:00 [accepted] PHST- 2013/06/14 06:00 [entrez] PHST- 2013/06/14 06:00 [pubmed] PHST- 2014/04/24 06:00 [medline] AID - S0969-9961(13)00168-X [pii] AID - 10.1016/j.nbd.2013.06.001 [doi] PST - ppublish SO - Neurobiol Dis. 2013 Oct;58:249-57. doi: 10.1016/j.nbd.2013.06.001. Epub 2013 Jun 10.