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Combination of Dexamethasone and Tofacitinib Reduces Xenogeneic MSC-Induced Immune Responses in a Mouse Model of Alzheimer's Diseaseopen access

Authors
Lee, Na KyungMyeong, Su HyeonHwang, Jung WonSa, Jason K.Son, Hyo JinKim, Hee JinJang, HyeminChang, Jong WookNa, Duk L.
Issue Date
8월-2022
Publisher
MDPI
Keywords
Alzheimer' s disease; dexamethasone; immune response; immunosuppressant; tofacitinib
Citation
BIOMEDICINES, v.10, no.8
Indexed
SCIE
SCOPUS
Journal Title
BIOMEDICINES
Volume
10
Number
8
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/144106
DOI
10.3390/biomedicines10081882
ISSN
2227-9059
Abstract
We have recently reported on how transplantation of human mesenchymal stem cells (MSCs) into the mouse parenchyma generated immune responses. To facilitate the clinical translation of MSC-based AD therapy, the safety and efficacy of human derived MSCs (hMSCs) must be confirmed in the pre-clinical stage. Thus, it is imperative to investigate measures to reduce immune responses exerted via xenotransplantation. In this study, immunosuppressants were co-administered to mice that had received injections of hMSCs into the parenchyma. Prior to performing experiments using transgenic AD mice (5xFAD), varying immunosuppressant regimens were tested in wild-type (WT) mice and the combination of dexamethasone and tofacitinib (DexaTofa) revealed to be effective in enhancing the persistence of hMSCs. According to transcriptome sequencing and immunohistochemical analyses, administration of DexaTofa reduced immune responses generated via transplantation of hMSCs in the parenchyma of 5xFAD mice. Significant mitigation of amyloid burden, however, was not noted following transplantation of hMSCs alone or hMSCs with DexaTofa. The efficacy of the immunosuppressant regimen should be tested in multiple AD mouse models to promote its successful application and use in AD stem cell therapy.
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