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AlphaB-crystallin in retinal Muller cells

Research Project

Project/Area Number 21K09668
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionHokkaido University

Principal Investigator

Kase Satoru  北海道大学, 大学病院, 講師 (60374394)

Co-Investigator(Kenkyū-buntansha) 神田 敦宏  北海道大学, 医学研究院, 客員研究員 (80342707)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsアルファBークリスタリン / 網膜 / ミュラー細胞 / アポトーシス / αBークリスタリン / インターロイキン1ーβ / αBクリスタイン / GFAP / 糖尿病網膜症 / リン酸化 / VEGF / 増殖
Outline of Research at the Start

増殖糖尿病網膜症(PDR)は成人の重大な視力障害の原因となり、その病態に線維血管性増殖組織の形成が関与している。血管内皮細胞とミュラー細胞はPDR増殖組織の重要な構成細胞である。αB-クリスタリンは熱ショックタンパクの1つで、血管新生因子である血管内皮増殖因子-A(VEGF-A)の分子シャペロンであり、その分解制御に関与する。本研究ではin vitro、in vivoの系を用いて、αB-クリスタリンの発現とVEGF-A、細胞増殖、細胞移動の変化を解析する。本研究によりPDRの病態におけるミュラー細胞によるαB―クリスタリンを介する分子メカニズムを解明する。

Outline of Final Research Achievements

AlphaB-crystallin, a small heat shock protein, plays a pleiotropic role as a molecular chaperone, one of which is escape from apoptotic stimuli. In this study, we examined alphaB-crystallin as an escape from apoptosis in retinal Muller cells. In fact, IL-1beta, one of inflammatory cytokines that is known to be upregulated in diabetic conditions, reduced alphaB-crystallin protein synthesis, while phosphorylation of alphaB-crystallin at Ser59 led to retention of the protein export, and maintained intracellular protein concentrations. These mechanisms might underlie escape from apoptosis of retinal Muller cells, which contributed to formation of fibrovascular membrane in diabetic retinopathy.

Academic Significance and Societal Importance of the Research Achievements

本研究では糖尿病網膜症病態で、IL-1betaによるαBークリスタリンリン酸化が網膜ミュラー細胞のアポトーシスを回避することに貢献し、失明に繋がる線維血管増殖膜の形成に関与することを明らかにした。今後、IL-1betaが上昇する網膜症の病期において、αBークリスタリンの発現を抑制することが、増殖膜形成の抑制が治療標的になる可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (16 results)

All 2023 2022

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Book (1 results)

  • [Journal Article] Phosphorylation of αB-Crystallin Involves Interleukin-1β-Mediated Intracellular Retention in Retinal Muller Cells: A New Mechanism Underlying Fibrovascular Membrane Formation2023

    • Author(s)
      Yamamoto Taku、Kase Satoru、Shinkai Akihiro、Murata Miyuki、Kikuchi Kasumi、Wu Di、Kageyama Yasushi、Shinohara Masami、Sasase Tomohiko、Ishida Susumu
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 64 Issue: 10 Pages: 20-20

    • DOI

      10.1167/iovs.64.10.20

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Choroidal circulatory and vascular morphological changes in acute macular neuroretinopathy after infection with severe acute respiratory syndrome coronavirus 2: a case report with literature review.2023

    • Author(s)
      Mitamura M, Kase S, Hirooka K, Endo H, Ito Y, Ishida S.
    • Journal Title

      In Vivo

      Volume: 37 Issue: 6 Pages: 2869-2876

    • DOI

      10.21873/invivo.13405

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Peripapillary circulatory dysfunction precedes structural loss in treatment-naive diabetic retinopathy2023

    • Author(s)
      Mizuho Mitamura, Hiroaki Endo, Satoru Kase, Zhenyu Dong, Mitsuo Takahashi, Satoshi Katsuta, Manabu Kase, Susumu Ishida
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol

      Volume: 261 Issue: 1 Pages: 85-95

    • DOI

      10.1007/s00417-022-05773-9

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Changes in choriocapillaris structure occurring in idiopathic macular hole before and after vitrectomy.2023

    • Author(s)
      Endo H, Kase S, Takahashi M, Ito Y, Sonoda S, Sakoguchi T, Sakamoto T, Katsuta S, Ishida S, Kase M.
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol

      Volume: 261 Issue: 7 Pages: 1901-1912

    • DOI

      10.1007/s00417-023-06004-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Diagnostic Accuracy of Cell Block Preparations and Clinical Features Affecting It in Vitreoretinal Lymphoma.2022

    • Author(s)
      Kase S, Namba K, Iwata D, Mizuuchi K, Suzuki K, Ito T, Hase K, Kitaichi N, Ishida S.
    • Journal Title

      J Clin Med

      Volume: 11 Issue: 5 Pages: 1391-1391

    • DOI

      10.3390/jcm11051391

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serum advanced glycation end-products and alphaB-crystallin in diabetic retinopathy.2022

    • Author(s)
      Yamamoto T, Kase S, Murata M, Ishida S
    • Journal Title

      Biomedical Report

      Volume: 4 Issue: 4 Pages: 28-28

    • DOI

      10.3892/br.2022.1511

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Placental growth factor stabilizes VEGF receptor-2 protein in retinal pigment epithelial cells by downregulating glycogen synthase kinase 3 activity2022

    • Author(s)
      Murata Miyuki、Noda Kousuke、Kase Satoru、Hase Keitaro、Wu Di、Ando Ryo、Ishida Susumu
    • Journal Title

      Journal of Biological Chemistry

      Volume: 298 Issue: 9 Pages: 102378-102378

    • DOI

      10.1016/j.jbc.2022.102378

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Undifferentiated pleomorphic sarcoma of the conjunctiva: a case report and review of the literature.2022

    • Author(s)
      Suimon Y, Kase S, Mitsuhashi T, Ishida S.
    • Journal Title

      Cancer Diagnosis & Prognosis

      Volume: 2 Issue: 2 Pages: 232-239

    • DOI

      10.21873/cdp.10099

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Downregulation of AlphaB-crystallin in Retinal Pigment Epithelial Cells Exposed to Diabetes- related Stimuli In Vivo and In Vitro.2022

    • Author(s)
      u DI, Kase S, Liu YE, Kanda A, Murata M, Ishida S
    • Journal Title

      In Vivo.

      Volume: 36 Issue: 1 Pages: 132-139

    • DOI

      10.21873/invivo.12684

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 糖尿病網膜症病態におけるα-クリスタリンの役割2023

    • Author(s)
      加瀬 諭
    • Organizer
      臨床眼科学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 糖尿病網膜症の病理学と脈絡膜の構造変化2023

    • Author(s)
      加瀬 諭
    • Organizer
      日本眼科学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Effect of Age and Axial Length on Choroidal Stratified Structure in Normal Eyes2023

    • Author(s)
      Satoru Kase
    • Organizer
      The Retina Society
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 糖尿病網膜症病態における脈絡膜の関与:病理と臨床2023

    • Author(s)
      加瀬 諭
    • Organizer
      第127回日本眼科学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Role of phosphorylated αB-crystallin in Muller cells under diabetic inflammatory conditions2023

    • Author(s)
      Taku Yamamoto, Satoru Kase, Kasumi Kikuchi, Susumu Ishida
    • Organizer
      2nd Fujiretina
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] COVID-19関連慢性両側性涙腺炎:臨床病理学的検討2022

    • Author(s)
      加瀬 諭、石田 晋
    • Organizer
      第126回日本眼科学会
    • Related Report
      2021 Research-status Report
  • [Book] 今日の眼疾患治療指針2022

    • Author(s)
      加瀬 諭
    • Total Pages
      6
    • Publisher
      医学書院
    • ISBN
      9784260048071
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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