PMID- 33571747 OWN - NLM STAT- MEDLINE DCOM- 20210622 LR - 20210622 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 94 DP - 2021 May TI - Mesenchymal stem cell carriers enhance antitumor efficacy induced by oncolytic reovirus in acute myeloid leukemia. PG - 107437 LID - S1567-5769(21)00073-4 [pii] LID - 10.1016/j.intimp.2021.107437 [doi] AB - Chemotherapy is the main treatment for acute myeloid leukemia (AML), but the therapeutic efficacy is modest, and most commonly manifests as relapse from remission. Thus, improving long-term AML survival is a crucial clinical challenge. In recent years, oncolytic virotherapy has provided an alternative approach for AML treatment. The use of oncolytic reoviruses has been explored in more than 30 clinical trials for safety and feasibility issues. However, like other oncolytic viruses, neutralizing antibodies (NAbs) reduce therapeutic efficacy. To tackle this problem, human umbilical cord mesenchymal stem cells (hUC-MSCs) were used to deliver reovirus using in vitro and in vivo models. Human UC-MSCs were successfully loaded with reovirus, without impairing biological function.We also observed in vitro protective effects of hUC-MSCs on reovirus in the presence of NAbs. In the immunocompromised AML mouse model, hUC-MSCs effectively carried reoviruses to tumor lesions and significantly prolonged the survival of AML xenografts in mice in the presence of a high titer anti-reovirus antibody (p = 0.001). However, reovirus-induced activation of AKT, stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK), and NF-kappaB signaling led to the maintenance of intrinsic migratory properties and secretion of pro-inflammatory cytokines from hUC-MSCs, particularly CXCL10. In immuno-competent AML mice, MSCs carrying reovirus triggered immune responses, and eventually inhibited tumor growth. Therefore, these results suggest that MSCs as carriers of oncolytic reoviruses can enhance the antitumor efficacy of virotherapy. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Wang, Xianyao AU - Wang X AD - Department of Immunology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China; Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China. FAU - Yang, Yichen AU - Yang Y AD - Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China. FAU - Wang, Nianxue AU - Wang N AD - Department of Immunology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China; Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China. FAU - Wu, Xijun AU - Wu X AD - Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China. FAU - Xu, Jianwei AU - Xu J AD - Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China; Department of Pharmacology, Guizhou Medical University, Guiyang 550025, China. FAU - Zhou, Yanhua AU - Zhou Y AD - Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China. FAU - Zhao, Xing AU - Zhao X AD - Department of Immunology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China; Center for Tissue Engineering and Stem Cell Research , Guizhou Medical University, Guiyang 550004, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China. Electronic address: xingzhao@gmc.edu.cn. FAU - He, Zhixu AU - He Z AD - Department of Immunology, College of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China; Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences), Guiyang 550004, China; Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China. Electronic address: hzx@gmc.edu.cn. LA - eng PT - Journal Article DEP - 20210208 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 SB - IM MH - Animals MH - Cell Line MH - Female MH - Humans MH - Leukemia, Myeloid, Acute/*therapy MH - *Mesenchymal Stem Cells MH - *Oncolytic Virotherapy MH - Oncolytic Viruses OTO - NOTNLM OT - Acute myeloid leukemia OT - Antitumor efficacy OT - CXCL10 OT - Human umbilical cord mesenchymal stem cells OT - Oncolytic reovirus OT - Virotherapy EDAT- 2021/02/12 06:00 MHDA- 2021/06/23 06:00 CRDT- 2021/02/11 20:12 PHST- 2020/12/31 00:00 [received] PHST- 2021/01/21 00:00 [revised] PHST- 2021/01/24 00:00 [accepted] PHST- 2021/02/12 06:00 [pubmed] PHST- 2021/06/23 06:00 [medline] PHST- 2021/02/11 20:12 [entrez] AID - S1567-5769(21)00073-4 [pii] AID - 10.1016/j.intimp.2021.107437 [doi] PST - ppublish SO - Int Immunopharmacol. 2021 May;94:107437. doi: 10.1016/j.intimp.2021.107437. Epub 2021 Feb 8.