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Identifying PD-L1-mediated immune dysregulation in post-cardiac arrest syndrome.

Research Project

Project/Area Number 22K09117
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionMie University

Principal Investigator

池尻 薫  三重大学, 医学部附属病院, 助教 (90813014)

Co-Investigator(Kenkyū-buntansha) 川本 英嗣  三重大学, 医学部附属病院, 准教授 (20577415)
朴 恩正  三重大学, 医学系研究科, 准教授 (20644587)
島岡 要  三重大学, 医学系研究科, 教授 (40281133)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords心停止後症候群 / PD-L1 / PD-1 / 免疫麻痺 / PCAS / エキソソーム / miRNA
Outline of Research at the Start

病院外心肺停止症例では迅速な蘇生処置により自己心拍が再開しても、心停止後症候群(post cardiac arrest syndrome:PCAS)により、重度の多臓器不全が起こり、患者予後を悪化させる。PCAS病態の中心に虚血再灌流障害による免疫系の制御不全があると考えられるが、その詳細は不明である。本研究ではリンパ球に発現するチェックポイント制御分子PD-1 (Programmed cell Death-1)の制御異常がPCAS病態の中心に関わっている可能性を検討する。

Outline of Annual Research Achievements

病院外心肺停止症例では迅速な蘇生処置により自己心拍が再開しても、心停止後症候群(post cardiac arrest syndrome:PCAS)により、重度の多臓器不全が
起こり、患者予後を悪化させる。PCAS病態の中心に虚血再灌流障害による免疫系の制御不全があると考えられるが、その詳細は不明である。
我々は、患者血液中で可溶性PD-1リガンド(PD-L1)が、継続的に異常高値を示し、臓器不全の重症度や免疫麻痺の程度と相関することを明らかにしてきた。
OHCAにおけるsPD-L1の血漿中濃度は有意に上昇しており、敗血症で観察されるのと同程度のレベルまで上昇していた。CPR中のsPD-L1レベルは、末梢リンパ球数の減少およびC反応性蛋白レベルの上昇と相関していた。ROSC症例におけるsPD-L1レベルの経時的解析から、sPD-L1レベルは臓器不全と並行して発生することが明らかにした。本研究では、心肺蘇生中の虚血再灌流が、免疫細胞と内皮細胞を異常に活性化してsPD-L1を循環中に放出し、PCASに伴う免疫疲弊と臓器不全の発症に関与している可能性を示唆された。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

来院時心肺停止患者の血液サンプルは順調に取得できており、解析を進めている。

Strategy for Future Research Activity

sPD-L1と患者重症度の相関関係を解析し、心停止後症候群の予後を予測するため、機械学習を用いた予測モデルを開発予定。

Report

(2 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (11 results)

All 2023 2022

All Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 11 results)

  • [Journal Article] Severe hypocalcemia after denosumab treatment leading to refractory ventricular tachycardia and veno-arterial extracorporeal membrane oxygenation support: a case report2023

    • Author(s)
      Okuno Fumito、Ito-Masui Asami、Hane Atsuya、Maeyama Keiko、Ikejiri Kaoru、Ishikura Ken、Yanagisawa Masashi、Dohi Kaoru、Suzuki Kei
    • Journal Title

      International Journal of Emergency Medicine

      Volume: 16 Issue: 1 Pages: 52-52

    • DOI

      10.1186/s12245-023-00529-6

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Correlation Between the Social Network Structure and Well-Being of Health Care Workers in Intensive Care Units: Prospective Observational Study2023

    • Author(s)
      Esumi Ryo、Ito-Masui Asami、Kawamoto Eiji、Ito Mami、Hayashi Tomoyo、Shinkai Toru、Hane Atsuya、Okuno Fumito、Park Eun Jeong、Kaku Ryuji、Shimaoka Motomu
    • Journal Title

      Interactive Journal of Medical Research

      Volume: 12 Pages: e50148-e50148

    • DOI

      10.2196/50148

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of an Internet Delivered Cognitive Behavioral Therapy Based Sleep Improvement App for Shift Workers at High Risk of Sleep Disorder: Single-Arm, Nonrandomized Trial2023

    • Author(s)
      Ito-Masui Asami、Sakamoto Ryota、Matsuo Eri、Kawamoto Eiji、Motomura Eishi、Tanii Hisashi、Yu Han、Sano Akane、Imai Hiroshi、Shimaoka Motomu
    • Journal Title

      Journal of Medical Internet Research

      Volume: 25 Pages: 1-16

    • DOI

      10.2196/45834

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Novel Approach to Reducing Lung Metastasis in Osteosarcoma: Increasing Cell Stiffness with Carbenoxolone2023

    • Author(s)
      Kita Kouji、Asanuma Kunihiro、Okamoto Takayuki、Kawamoto Eiji、Nakamura Koichi、Hagi Tomohito、Nakamura Tomoki、Shimaoka Motomu、Sudo Akihiro
    • Journal Title

      Current Issues in Molecular Biology

      Volume: 45 Issue: 5 Pages: 4375-4388

    • DOI

      10.3390/cimb45050278

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Continuous High Positive-End Expiratory Pressure May Worsen Renal Function in Patients With Acute Respiratory Distress Syndrome: Retrospective Analyses of a Nationwide, Multicenter Observational Study in Japan2023

    • Author(s)
      Yokoyama Kazuto、Kaneko Tadashi、Ieki Yohei、Ito Asami、Kawamoto Eiji、Suzuki Kei、Ishikura Ken、Imai Hiroshi
    • Journal Title

      Cureus

      Volume: 15

    • DOI

      10.7759/cureus.35233

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] MicroRNA Profiles in Intestinal Epithelial Cells in a Mouse Model of Sepsis2023

    • Author(s)
      Caidengbate Siqingaowa、Akama Yuichi、Banerjee Anik、Mokmued Khwanchanok、Kawamoto Eiji、Gaowa Arong、McCullough Louise D.、Shimaoka Motomu、Lee Juneyoung、Park Eun Jeong
    • Journal Title

      Cells

      Volume: 12 Issue: 5 Pages: 726-726

    • DOI

      10.3390/cells12050726

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tetraploidy-linked sensitization to CENP-E inhibition in human cells.2023

    • Author(s)
      Yoshizawa Koya、Matsura Akira、Shimada Masaya、Ishida‐Ishihara Sumire、Sato Fuyu、Yamamoto Takahiro、Yaguchi Kan、Kawamoto Eiji、Kuroda Taruho、Matsuo Kazuya、Tamaoki Nobuyuki、Sakai Ryuichi、Shimada Yasuhito、Mishra Mithilesh、Uehara Ryota
    • Journal Title

      Molecular Oncology

      Volume: 10 Issue: 6 Pages: 13379-13379

    • DOI

      10.1002/1878-0261.13379

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sequential organ failure assessment score as a predictor of the outcomes of patients hospitalized for classical or exertional heatstroke2022

    • Author(s)
      Yokoyama Kazuto、Kaneko Tadashi、Ito Asami、Ieki Yohei、Kawamoto Eiji、Suzuki Kei、Ishikura Ken、Imai Hiroshi、Kanda Jun、Yokobori Shoji
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 16373-16373

    • DOI

      10.1038/s41598-022-20878-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Possible Metastatic Stage-Dependent ILC2 Activation Induces Differential Functions of MDSCs through IL-13/IL-13Rα1 Signaling during the Progression of Breast Cancer Lung Metastasis2022

    • Author(s)
      Ito Atsushi、Akama Yuichi、Satoh-Takayama Naoko、Saito Kanako、Kato Takuma、Kawamoto Eiji、Gaowa Arong、Park Eun Jeong、Takao Motoshi、Shimaoka Motomu
    • Journal Title

      Cancers

      Volume: 14 Issue: 13 Pages: 3267-3267

    • DOI

      10.3390/cancers14133267

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conservative medical management combined with follow-up multidetector computed tomography of tracheobronchial injury caused by penetrating injuries: A case report2022

    • Author(s)
      Takahashi Tsuyoshi、Kaneko Tadashi、Hane Atsuya、Ito Asami、Kawamoto Eiji、Suzumura Misato、Ueda Koki、Shinoda Mari、Ito Atsushi、Imai Hiroshi
    • Journal Title

      Trauma Case Reports

      Volume: 42 Pages: 100710-100710

    • DOI

      10.1016/j.tcr.2022.100710

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Septic pulmonary embolism and subsequent bilateral pneumothorax in patients undergoing chemoradiotherapy for head angiosarcoma: An autopsy case report and literature review2022

    • Author(s)
      Ikejiri Kaoru、Goto Hiroyuki、Usui Miki、Nakayama Yuichi、Sugioka Kyoko、Ito Asami、Suzuki Kei、Hirokawa Yoshifumi、Yamanaka Keiichi、Imai Hiroshi
    • Journal Title

      Medicine

      Volume: 101 Issue: 45 Pages: e31755-e31755

    • DOI

      10.1097/md.0000000000031755

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2022-04-19   Modified: 2024-12-25  

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