PMID- 28103249 OWN - NLM STAT- MEDLINE DCOM- 20170807 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 12 IP - 1 DP - 2017 TI - The Green Tea Catechin Epigallocatechin Gallate Ameliorates Graft-versus-Host Disease. PG - e0169630 LID - 10.1371/journal.pone.0169630 [doi] LID - e0169630 AB - Allogeneic hematopoetic stem cell transplantation (allo-HSCT) is a standard treatment for leukemia and other hematologic malignancies. The major complication of allo-HSCT is graft-versus-host-disease (GVHD), a progressive inflammatory illness characterized by donor immune cells attacking the organs of the recipient. Current GVHD prevention and treatment strategies use immune suppressive drugs and/or anti-T cell reagents these can lead to increased risk of infections and tumor relapse. Recent research demonstrated that epigallocatechin gallate (EGCG), a component found in green tea leaves at a level of 25-35% at dry weight, may be useful in the inhibition of GVHD due to its immune modulatory, anti-oxidative and anti-angiogenic capacities. In murine allo-HSCT recipients treated with EGCG, we found significantly reduced GVHD scores, reduced target organ GVHD and improved survival. EGCG treated allo-HSCT recipients had significantly higher numbers of regulatory T cells in GVHD target organs and in the blood. Furthermore, EGCG treatment resulted in diminished oxidative stress indicated by significant changes of glutathione blood levels as well as glutathione peroxidase in the colon. In summary, our study provides novel evidence demonstrating that EGCG ameliorates lethal GVHD and reduces GVHD-related target organ damage. Possible mechanisms are increased regulatory T cell numbers and reduced oxidative stress. FAU - Westphal, Sabine AU - Westphal S AD - Department of Hematology, Oncology and Tumorimmunology, Charite Campus Virchow, Berlin, Germany. FAU - McGeary, Aleixandria AU - McGeary A AD - Department of Hematology, Oncology and Tumorimmunology, Charite Campus Virchow, Berlin, Germany. FAU - Rudloff, Sandra AU - Rudloff S AD - Department of Hematology, Oncology and Tumorimmunology, Charite Campus Virchow, Berlin, Germany. FAU - Wilke, Andrea AU - Wilke A AD - Department of Hematology, Oncology and Tumorimmunology, Charite Campus Virchow, Berlin, Germany. FAU - Penack, Olaf AU - Penack O AD - Department of Hematology, Oncology and Tumorimmunology, Charite Campus Virchow, Berlin, Germany. LA - eng PT - Journal Article DEP - 20170119 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Alkaloids) RN - 0 (Antioxidants) RN - 0 (Benzodioxoles) RN - 0 (Immunologic Factors) RN - 0 (Piperidines) RN - 0 (Polyunsaturated Alkamides) RN - 0 (Tea) RN - 8R1V1STN48 (Catechin) RN - 9IKM0I5T1E (Quercetin) RN - BQM438CTEL (epigallocatechin gallate) RN - U71XL721QK (piperine) SB - IM MH - Alkaloids/administration & dosage MH - Allografts MH - Animals MH - Antioxidants/pharmacology MH - Benzodioxoles/administration & dosage MH - Catechin/administration & dosage/*analogs & derivatives/blood/pharmacology MH - Disease Models, Animal MH - Female MH - Graft Survival/drug effects MH - Graft vs Host Disease/drug therapy/metabolism/*prevention & control MH - Hematopoietic Stem Cell Transplantation/adverse effects MH - Humans MH - Immunologic Factors/pharmacology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred DBA MH - Neovascularization, Pathologic/prevention & control MH - Oxidative Stress/drug effects MH - Piperidines/administration & dosage MH - Polyunsaturated Alkamides/administration & dosage MH - Quercetin/administration & dosage MH - T-Lymphocytes, Regulatory/drug effects MH - Tea/chemistry PMC - PMC5245838 COIS- The authors have declared that no competing interests exist. EDAT- 2017/01/20 06:00 MHDA- 2017/08/08 06:00 PMCR- 2017/01/19 CRDT- 2017/01/20 06:00 PHST- 2016/05/04 00:00 [received] PHST- 2016/12/09 00:00 [accepted] PHST- 2017/01/20 06:00 [entrez] PHST- 2017/01/20 06:00 [pubmed] PHST- 2017/08/08 06:00 [medline] PHST- 2017/01/19 00:00 [pmc-release] AID - PONE-D-16-16840 [pii] AID - 10.1371/journal.pone.0169630 [doi] PST - epublish SO - PLoS One. 2017 Jan 19;12(1):e0169630. doi: 10.1371/journal.pone.0169630. eCollection 2017.