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Development of a new treatment for age-related macular degeneration targeting vascular endothelial stem cells

Research Project

Project/Area Number 24K12779
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

若林 卓  金沢大学, 医学系, 協力研究員 (20733116)

Co-Investigator(Kenkyū-buntansha) 射場 智大  金沢大学, 医学系, 助教 (10908205)
Project Period (FY) 2024-04-01 – 2027-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2026: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2025: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords加齢黄斑変性症 / 血管新生 / 血管内皮増殖因子 / VEGF / シングルセル解析 / ノックインマウス / 病的血管新生 / シングルセルRNAシーケンシング
Outline of Research at the Start

加齢黄斑変性症は、中途失明を引き起こす可能性のある病気で、その発症には脈絡膜血管新生が大きく関わっています。現在の標準治療は眼内への注射ですが、継続的な治療なしには視力を維持できないという問題があります。この研究では、加齢黄斑変性症の発症メカニズムを明らかにし、脈絡膜血管内皮細胞の遺伝子発現機構に着目して、脈絡膜血管内皮細胞を標的とした新しい治療法の開発を目指します。

Outline of Annual Research Achievements

滲出型加齢黄斑変性症は中途失明に関わる重篤な疾患であり、その発症および進行には脈絡膜血管新生が密接に関連する。現在、血管内皮増殖因子(VEGF)阻害薬の硝子体内注射が世界的な標準治療となっているが、治療を継続して行わないと視力を維持できないなどいまだ課題も多い。このため、1度の治療で治癒する新規治療法を開発できれば、患者にとってこれ以上ない福音となる。
近年、我々は脈絡膜血管に存在する血管内皮”幹”細胞を同定した(Wakabayashi T, et al. Cell Stem Cell 2018;22:384-397, IOVS 2022;22:384-397)。血管内皮幹細胞は血管新生開始に中心的な役割を果たすと考えており、治療標的とすることで血管新生を制御できる可能性がある。本研究では、レーザー照射による実験的マウス脈絡膜新生血管モデルを用いて、脈絡膜血管幹細胞の脈絡膜新生血管開始における役割や遺伝子発現機構をシングルセル解析により解明するとともに、幹細胞を標的とした滲出型加齢黄斑変性症に対する新たな治療法および薬剤開発を目指す。
2024年度の研究では、CD157陽性の脈絡膜血管内皮細胞が実際に生体内で血管新生に貢献するかを立証するために、CD157遺伝子座に対してCreERT2コンストラクトを直接ノックインしたマウスを作製しレポーターマウスと交配することで生体内でCD157陽性血管内皮細胞をGFPで標識することを試みた。現在、このマウスの評価を行っている。

Current Status of Research Progress
Current Status of Research Progress

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

Reason

2024年度の研究では、CD157陽性の脈絡膜血管内皮細胞が実際に生体内で血管新生に貢献するかを立証するために、CD157遺伝子座に対してCreERT2コンストラクトを直接ノックインしたマウスを作製しレポーターマウスと交配することで生体内でCD157陽性血管内皮細胞をGFPで標識することを試みた。このマウス作成が終了し、現在このマウスの評価を行っている。

Strategy for Future Research Activity

①脈絡膜新生血管がCD157陽性の脈絡膜血管内皮幹細胞から発生することをin vivoで証明
CD157陽性血管内皮幹細胞がin vivoで新生血管に貢献することを証明するため、遺伝子改変マウス(ノックインマウス)を用いた検証を行う。CD157陽性血管内皮細胞をEGFPで標識した状態で血管新生を誘導し、EGFP陽性の血管内皮細胞の運命追跡(系譜解析)を行い、新たに構築される血管がEGFP陽性細胞から発生するかにつき検討を行う。脈絡膜血管新生誘導モデルとして、レーザーによる実験的脈絡膜新生血管モデルを作製する。本研究により、新生血管がすべてEGFP陽性となれば、新生血管がEGFP陽性のCD157陽性幹細胞により担われることを時空間的に実証することができ、これらを標的とした治療を目指す根拠が決定的となる。
②シングルセル解析による脈絡膜新生血管発生時における幹細胞の遺伝子発現解析
脈絡膜新生血管発生時に血管内皮幹細胞にとって最も重要な転写因子を同定することを目指す。具体的には、レーザーによる実験的脈絡膜新生血管モデルを作製し、レーザー照射なしのコントロールと、照射後2日目から3日目の脈絡膜血管発生時、照射後7日目の脈絡膜新生血管の大きさがピークとなる時に、マウス脈絡膜から脈絡膜血管内皮細胞を単離し、シングルセル解析を行う。フローサイトメトリー(FACS)多重染色解析を用いて、マウス脈絡膜からCD31陽性VE-cadherin陽性CD45陰性の脈絡膜血管内皮細胞を単離する。シングルセル解析は、10X Genomics Chromiumシステムを使用して行う。得られた遺伝子発現情報から脈絡膜新生血管発生時に重要な転写因子群の絞り込みを行う。

Report

(1 results)
  • 2024 Research-status Report
  • Research Products

    (28 results)

All 2025 2024 Other

All Int'l Joint Research (1 results) Journal Article (22 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 22 results,  Open Access: 1 results) Presentation (5 results) (of which Invited: 5 results)

  • [Int'l Joint Research] Indiana University School of Medicine(米国)

    • Related Report
      2024 Research-status Report
  • [Journal Article] SICKLE CELL RETINOPATHY LOST TO FOLLOW-UP STUDY2025

    • Author(s)
      Wong Jovi C. Y.、Sivalingam Meera D.、Griffin Matthew、Magagna John、Momenaei Bita、Wakabayashi Taku、Ni Roselind L.、Wang Kristine Y.、Ammar Michael J.、Hsu Jason、Yonekawa Yoshihiro
    • Journal Title

      Retina

      Volume: 45 Issue: 4 Pages: 756-764

    • DOI

      10.1097/iae.0000000000004369

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] OUTCOMES IN EYES WITH RETAINED LENS FRAGMENTS UNDERGOING PARS PLANA LENSECTOMY AND SCLERAL-FIXATED INTRAOCULAR LENS INSERTION2025

    • Author(s)
      Durrani Asad F.、Momenaei Bita、Martin Jonathan L.、Wakabayashi Taku、Hamdan Saif A.、Gupta Omesh P.、Garg Sunir J.、Khan Mohammed A.、Mehta Sonia、Vander James、Ho Allen C.、Kuriyan Ajay E.、for the Secondary IOL Outcomes Study Group
    • Journal Title

      Retina

      Volume: 45 Issue: 2 Pages: 269-277

    • DOI

      10.1097/iae.0000000000004317

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Incidence and Outcomes of Recurrent Retinal Detachment after Cataract Surgery in Eyes with Prior Retinal Detachment Repair2024

    • Author(s)
      Momenaei B, Wakabayashi T, Kazan AS, Oh G, Kozarsky S, Vander JF, Gupta OP, Yonekawa Y, Hsu J.
    • Journal Title

      Ophthalmol Retina

      Volume: 8 Issue: 5 Pages: 447-455

    • DOI

      10.1016/j.oret.2023.11.005

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Practical Utility of Widefield OCT Angiography to Detect Retinal Neovascularization in Eyes with Proliferative Diabetic Retinopathy2024

    • Author(s)
      Hamada Mizuki、Hirai Kento、Wakabayashi Taku、Ishida Yuichiro、Fukushima Masaki、Kamei Motohiro、Tsuboi Kotaro
    • Journal Title

      Ophthalmology Retina

      Volume: 8 Issue: 5 Pages: 481-489

    • DOI

      10.1016/j.oret.2023.11.009

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Conversion to faricimab after prior anti-vascular endothelial growth factor therapy for persistent diabetic macular oedema2024

    • Author(s)
      Durrani Asad Farooq、Momenaei Bita、Wakabayashi Taku、Vemula Sudheshna、Pandit Saagar A、Hsu Jason、Ho Allen C、Spirn Marc J、Klufas Michael A、Garg Sunir J、Vander James F、Regillo Carl D、Chiang Allen、Kuriyan Ajay E、Yonekawa Yoshihiro
    • Journal Title

      British Journal of Ophthalmology

      Volume: 108 Issue: 9 Pages: 1257-1262

    • DOI

      10.1136/bjo-2023-324394

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Rates of Ocular Adverse Events after Intravitreal Faricimab Injections2024

    • Author(s)
      Momenaei Bita、Wang Kristine、Kazan Adina S.、Oh Glenn J.、Ni Roselind L.、Wakabayashi Taku、Durrani Asad F.、Kuriyan Ajay E.、Klufas Michael A.、Garg Sunir J.、Yonekawa Yoshihiro、Hsu Jason
    • Journal Title

      Ophthalmology Retina

      Volume: 8 Issue: 3 Pages: 311-313

    • DOI

      10.1016/j.oret.2023.12.001

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] RWC Update: Unstapling the Retina From a Firecracker Injury; Macula-On Retinal Detachment: When To Operate?; Choroidal Coloboma2024

    • Author(s)
      Sharma Ashish、Wu Lihteh、Bloom Steven、Stanga Paulo、Agrawal Rohit、Downes Rachel A.、Rachitskaya Aleksandra V.、Ghalibafan Seyyedehfatemeh、Cai Louis Z.、Yannuzzi Nicolas A.、Shanmugam P. Mahesh、Wakabayashi Taku、Avci Remzi、Rezaei Kourous A.
    • Journal Title

      Ophthalmic Surgery, Lasers and Imaging Retina

      Volume: 55 Issue: 3 Pages: 125-128

    • DOI

      10.3928/23258160-20240212-01

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Assessing ChatGPT-3.5 Versus ChatGPT-4 Performance in Surgical Treatment of Retinal Diseases: A Comparative Study2024

    • Author(s)
      Momenaei Bita、Wakabayashi Taku、Shahlaee Abtin、Durrani Asad F.、Pandit Saagar A.、Wang Kristine、Mansour Hana A.、Abishek Robert M.、Xu David、Sridhar Jayanth、Yonekawa Yoshihiro、Kuriyan Ajay E.
    • Journal Title

      Ophthalmic Surgery, Lasers and Imaging Retina

      Volume: 55 Issue: 8 Pages: 481-482

    • DOI

      10.3928/23258160-20240227-02

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clinical Outcomes of Faricimab in Patients with Previously Treated Neovascular Age-Related Macular Degeneration2024

    • Author(s)
      Pandit Saagar A.、Momenaei Bita、Wakabayashi Taku、Mansour Hana A.、Vemula Sudheshna、Durrani Asad F.、Pashaee Bahram、Kazan Adina S.、Ho Allen C.、Klufas Michael、Regillo Carl、Yonekawa Yoshihiro、Hsu Jason、Kuriyan Ajay、Chiang Allen
    • Journal Title

      Ophthalmology Retina

      Volume: 8 Issue: 4 Pages: 360-366

    • DOI

      10.1016/j.oret.2023.10.018

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] ABCG2-Expressing Clonal Repopulating Endothelial Cells Serve to Form and Maintain Blood Vessels2024

    • Author(s)
      Lin Y., Gil CH., Banno K., Yokoyama M., Wingo M., Go E., Prasain N., Liu Y., Hato T., Naito H., Wakabayashi T., Sominskaia M., Gao M., Chen K., Geng F., Gomez Salinero JM., Chen S., Shelley WC., Yoshimoto M., Li Calzi S., Murphy MP., Horie K., Grant MB., Schreiner R., Redmond D., Basile DP., Rafii S
    • Journal Title

      Circulation

      Volume: 150 Issue: 6 Pages: 451-465

    • DOI

      10.1161/circulationaha.122.061833

    • Related Report
      2024 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Retinal Tear and Retinal Detachment after Cataract Surgery in Eyes with a Previous History of Treated Phakic Retinal Tears2024

    • Author(s)
      Momenaei Bita、Zhou Andrew、Kazan Adina S.、Wakabayashi Taku、Obeid Anthony、Morano Michael、Khan M. Ali、Xu David、Kuriyan Ajay E.、Yonekawa Yoshihiro、Hsu Jason、Ho Allen C.
    • Journal Title

      Ophthalmology

      Volume: 131 Issue: 12 Pages: 1416-1426

    • DOI

      10.1016/j.ophtha.2024.06.021

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Retinal Displacement Following Rhegmatogenous Retinal Detachment Repair2024

    • Author(s)
      Mahmoudzadeh Raziyeh、Swaminathan Shreya、Salabati Mirataollah、Wakabayashi Taku、Patel Dillan、Mehta Sonia、Kuriyan Ajay E.、Khan M. Ali、Klufas Michael A.、Garg Sunir J.、Gupta Omesh P.、Regillo Carl D.、Yonekawa Yoshihiro、Cohen Michael N.
    • Journal Title

      Ophthalmic Surgery, Lasers and Imaging Retina

      Volume: 55 Issue: 10 Pages: 560-566

    • DOI

      10.3928/23258160-20240528-01

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] A multi-center analysis of visual outcomes following open globe injury2024

    • Author(s)
      Greenfield JA, Malek DA, Anant S, Antonietti M, Jammal A, Casella A, Miller SC, Wang K, Momenaei B, Lee K, Mansour HA, Justin GA, Makhoul KG, Bitar RA, Lorch AC, Armstrong GW, Wakabayashi T, Yonekawa Y, Woreta F, Cavuoto K
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1 Pages: 16638-16638

    • DOI

      10.1038/s41598-024-67564-y

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Biosimilar ranibizumab (BS1) ? early experience from Japan (BRIJ study)2024

    • Author(s)
      Ueda-Consolvo T, Ishida M, Nakamura T, Yanagisawa S, Tsuboi K, Wakabayashi T, Hayashi A, Sharma A; International Retina Biosimilar Study Group (Inter BIOS Group)
    • Journal Title

      Eye

      Volume: 38 Issue: 16 Pages: 3193-3196

    • DOI

      10.1038/s41433-024-03220-z

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] SUPRACHOROIDAL TRIAMCINOLONE ACETONIDE FOR REFRACTORY POSTOPERATIVE CYSTOID MACULAR EDEMA2024

    • Author(s)
      Momenaei Bita、Pandit Saagar A.、Wang Kristine Y.、Wakabayashi Taku、Hsu Jason、Regillo Carl D.、Klufas Michael A.、Xu David、Cohen Michael N.、Garg Sunir J.、Kuriyan Ajay E.、Yonekawa Yoshihiro
    • Journal Title

      Retina

      Volume: 44 Issue: 8 Pages: 1379-1386

    • DOI

      10.1097/iae.0000000000004132

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Lens-Sparing Perfluoro-Octane?Assisted External Drainage of Total Exudative Retinal Detachment in Coats' Disease2024

    • Author(s)
      Sivalingam Meera D.、Wakabayashi Taku、Kusaka Shunji、Yonekawa Yoshihiro
    • Journal Title

      Ophthalmic Surgery, Lasers and Imaging Retina

      Volume: 55 Issue: 8 Pages: 430-432

    • DOI

      10.3928/23258160-20240704-01

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Subfoveal neurosensory detachment flattening and observe (SNF-Ob) approach for the management of Ci-DMO - a multicentric study2024

    • Author(s)
      Sharma Ashish、Wakabayashi Taku、Regillo Carl D.、Cheung Chui Ming Gemmy、Loewenstein Anat、Zur Dinah、Goldberg Dafna、Hilely Assaf、Ozdek Sengul、?zdemir H?seyin Baran、Parachuri Nikulaa、Kumar Nilesh、Kuppermann Baruch D.、Bandello Francesco、Querques Giuseppe
    • Journal Title

      Eye

      Volume: 38 Issue: 17 Pages: 3272-3278

    • DOI

      10.1038/s41433-024-03275-y

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] OUTCOMES OF PRO RE NATA VERSUS TREAT-AND-EXTEND ANTI-VASCULAR ENDOTHELIAL GROWTH FACTOR INJECTIONS FOR MYOPIC MACULAR NEOVASCULARIZATION IN MULTIETHNIC PATIENTS IN THE UNITED STATES2024

    • Author(s)
      Swaminathan Shreya、Mahmoudzadeh Raziyeh、Wakabayashi Taku、Bowers Mallory、Momenaei Bita、Abishek Robert M.、Salabati Mirataollah、Hsu Jason、Dunn James P.
    • Journal Title

      Retina

      Volume: 44 Issue: 12 Pages: 2057-2065

    • DOI

      10.1097/iae.0000000000004256

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] SPARING VERSUS REMOVAL OF EPIRETINAL PROLIFERATION IN THE SURGICAL REPAIR OF FULL-THICKNESS MACULAR HOLES2024

    • Author(s)
      Fukushima Masaki、Tsuboi Kotaro、Akai Ryota、Ishida Yuichiro、Kusaka Shunji、Kamei Motohiro、Hayashi Atsushi、Wakabayashi Taku
    • Journal Title

      Retina

      Volume: 44 Issue: 12 Pages: 2066-2075

    • DOI

      10.1097/iae.0000000000004261

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anti-VEGF Biosimilars for Retinal Diseases Survey 2023- India (Bio-INDAS) by the International Retina Biosimilar Study Group?(Inter-BIOS?Group) in collaboration with the Vitreo-Retinal Society of India (VRSI)2024

    • Author(s)
      Sharma A, Kaiser PK, Tadayoni R, Holz FG, Nicholson L, Vazquez-Alfageme C, Sivaprasad S, Wakabayashi T, Woo SJ, Sarraf D, Kumar N, Parachuri N, Regillo CD, Rezaei KA, Khanani AM, Bandello F, Shanamugam M, Verma L, Dogra MR, Ns M, Agarwal M, Loewenstein A, Kuppermann BD
    • Journal Title

      Eye

      Volume: 38 Issue: 17 Pages: 3392-3395

    • DOI

      10.1038/s41433-024-03284-x

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] SURGICAL OUTCOMES OF RETINAL DETACHMENT ASSOCIATED WITH PROLIFERATIVE SICKLE CELL RETINOPATHY2024

    • Author(s)
      Ahmed Ishrat、Wakabayashi Taku、Gonzales Anthony F.、Ong Sally S.、Light Jacob G.、Handa James T.、Yonekawa Yoshihiro、Scott Adrienne W.
    • Journal Title

      Retina

      Volume: 44 Issue: 9 Pages: 1565-1571

    • DOI

      10.1097/iae.0000000000004145

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Journal Article] Negative impact of internal limiting membrane peeling in vitreous hemorrhage secondary to retinal vein occlusion with macular ischemia2024

    • Author(s)
      Shiraki Akihiko、Shiraki Nobuhiko、Maruyama Kazuichi、wakabayashi Taku、Sakimoto Susumu、Maeno Takatoshi、Nishida Kohji
    • Journal Title

      Graefe's Archive for Clinical and Experimental Ophthalmology

      Volume: 263 Pages: 369-377

    • DOI

      10.1007/s00417-024-06645-0

    • Related Report
      2024 Research-status Report
    • Peer Reviewed
  • [Presentation] Cellular diversity and stem cells in retinal and choroidal vessels: Paving the way for new vascular disease treatments2024

    • Author(s)
      Taku Wakabayashi
    • Organizer
      39th Asia Pacific Academy of Ophthalmology, Annual Congress
    • Related Report
      2024 Research-status Report
    • Invited
  • [Presentation] Postoperative Epiretinal Membrane Formation after Fovea-sparing vs. Standard ILM peeling for Myopic Traction Maculopathy2024

    • Author(s)
      Taku Wakabayashi
    • Organizer
      FUJIRETINA
    • Related Report
      2024 Research-status Report
    • Invited
  • [Presentation] Efficacy of Vitrectomy with Tamponade Versus No Tamponade for Myopic Traction Maculopathy2024

    • Author(s)
      Taku Wakabayashi
    • Organizer
      The Taiwan Macula Society
    • Related Report
      2024 Research-status Report
    • Invited
  • [Presentation] Anti-VEGF Therapy and Biosimilars -Past, Present, and Future-. Dinner Symposium2024

    • Author(s)
      Taku Wakabayashi
    • Organizer
      The Korean Retina Society/Asia Retina Congress
    • Related Report
      2024 Research-status Report
    • Invited
  • [Presentation] Progression of myopic maculopathy after vitrectomy for myopic traction maculopathy Vitrectomy.2024

    • Author(s)
      Taku Wakabayashi
    • Organizer
      Vail Vitrectomy
    • Related Report
      2024 Research-status Report
    • Invited

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Published: 2024-04-05   Modified: 2025-12-26  

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