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Published in: Surgery Today 7/2018

01-07-2018 | Original Article

Bone marrow mesenchymal stromal cells protect allograft lung transplants from acute rejection via the PD-L1/IL-17A axis

Authors: Naoya Ishibashi, Tatsuaki Watanabe, Masahiko Kanehira, Yui Watanabe, Yasushi Hoshikawa, Hirotsugu Notsuda, Masafumi Noda, Akira Sakurada, Shinya Ohkouchi, Takashi Kondo, Yoshinori Okada

Published in: Surgery Today | Issue 7/2018

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Abstract

Purpose

Using a rat model of allograft lung transplantation, we investigated the effectiveness of mesenchymal stromal cells (MSCs) as prophylactic and therapeutic agents against the acute rejection of lung grafts.

Methods

Lung grafts were harvested from donor rats and transplanted orthotopically into major histocompatibility complex-mismatched rats. MSCs were administered to the recipients once (on day 0) or twice (on days 0 and 3) after transplantation. The grade of acute rejection was evaluated both macroscopically and microscopically 6 days after transplantation. To elucidate the related mechanism, mRNA levels of inflammatory cytokines and immunomodulatory receptors in the transplanted grafts were measured using quantitative RT-PCR.

Results

The lung graft tissue from the rats that received MSCs post-surgically was protected from acute rejection significantly better than that from the untreated controls. Notably, the rats administered MSCs twice after surgery exhibited the least signs of rejection, with a markedly upregulated mRNA level of PD-L1 and a downregulated mRNA level of IL-17A.

Conclusion

This study assessed MSC protection of lung allografts from acute rejection by modulating T cell activity via enforced expression of PD-L1 in transplants and downregulation of IL-17A.
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Metadata
Title
Bone marrow mesenchymal stromal cells protect allograft lung transplants from acute rejection via the PD-L1/IL-17A axis
Authors
Naoya Ishibashi
Tatsuaki Watanabe
Masahiko Kanehira
Yui Watanabe
Yasushi Hoshikawa
Hirotsugu Notsuda
Masafumi Noda
Akira Sakurada
Shinya Ohkouchi
Takashi Kondo
Yoshinori Okada
Publication date
01-07-2018
Publisher
Springer Singapore
Published in
Surgery Today / Issue 7/2018
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-018-1643-x

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