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Development of Photodynamic Therapy for Malignant Tumors

Research Project

Project/Area Number 60440111
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field Thoracic surgery
Research InstitutionTOKYO MEDICAL COLLEGE

Principal Investigator

HAYATA Yoshihiro  Dept. of Surgery, Tokyo Medical College Professor, 医学部, 教授 (30074470)

Co-Investigator(Kenkyū-buntansha) KAWATA Norihiko  Dept. of Surgery. Tokyo Medical Colledge Assistant, 医学部, 助手 (70204740)
米山 一男  東京医科大学, 医学部, 助手
KONAKA Chimori  Dept. of Surgery, Tokyo Medical College Assistant, 医学部, 助手 (70147180)
AIZAWA Kastuo  Dept. of Physiology, Tokyo Medical College Assistant Professor, 医学部, 助教授 (40074645)
KATO Harubumi  Dept. of Surgery, Tokyo Medical Colledge Lecturer, 医学部, 講師 (20074768)
YONEYAMA Kazuo  Dept. of Surgery, Tokyo Medical Colledge Assistant
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1987: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1986: ¥3,000,000 (Direct Cost: ¥3,000,000)
KeywordsPhotodynamic therapy / Photosensitizer / Mono-L-aspartyl / chlorin e6 (NPe6) / Hematoporphyrin derivative (HpD) / Excimer dye laser Mitochondria / ミトコンドリア / ビデオ顕微鏡 / HpD / 腫瘍親和性光感受性物質 / アルゴンダイレーザー / パルス波 / クロリン系物質 / ヘマトポルフィリン誘導体(HpD) / 光線力学的治療(PDT)アルゴン・ダイ・レーザー / 悪性腫瘍
Research Abstract

Photodynamic therapy (PDT) is based on incorporation of a photosensitizer that has high affinity for malignant tissue and stimulation of the photosensitizer with a low power laser beam, with tumorcidal effects. Using the same principle fluorescence can also be elicited from the tumor by a laser beam of a different wavelength in order to detect the lesion. Our team has investigated this therapeutic modality in basic and clinical studies for ten years. Our initial studies employed hematoporphyrin derivative (HpD) as the photosensitizer for PDT with an argon dye laser and we have reported the first cases of five-year survival in a case of cancer treated only by PDT.
Mono-L-aspartyl chorin e (NPe ) is a photosensitizer newly developed in 1987. This material shows higher affinity to tumor and better light absorption than HpD. It has a strong absorption band at a wavelength longer than 600nm and consequently is not affected by hemoglobin. Further investigations are necessary for clinical application.
An excimer dye laser which more powerful than the argon dye laser has been developed for clinical applications. This laser equipment makes it possible to diagnose and treat in the same procedure by a wavelength-change device. Especially for diagnoses, the fiberscopic image, fluorescent light, and fluorescent wave length are shown in the same image.
The basic experiment of photodynamic therapy has been performed. HpD and NPe have been shown to have a high affinity for mitochondria. Damage to the mitochondria by photosensitizer was recognized by decrease in mitochondrial movement. This is in agreement with theories that the first step of photodynamic therapy is degeneration of mitochondria.
In 1987 the basic investigation, the laser equipment and the newly developed photosensitizer for photodynamic therapy were established. Our proposed project is a clinical trial and comparison with PDT using HpD and argon dye laser, as well as with other modalities.

Report

(3 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • 1985 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] 早田 義博 他: BME. 1. 532-535 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 早田 義博 他: 外科診療. 29. 1155-7161 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 早田 義博 他: 呼吸. 6. 1041-1053 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 加藤 治文 他: BME. 1. 532-535 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 加藤 治文 他: 日本臨床 特集:レーザー医学の進歩. 45. 126-131 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 會沢 勝夫 他: Photochemistry and Photobiology. 46. 789-793 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 早田 義博 他: "肺癌〈臨床visoal Mook 1〉" 全日本病院出版会, 216 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshihiro Hayata et al.: "Photodynamic therapy in excimer dye laser" BME. 1. 532-535 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshihiro Hayata et al.: "Laser surgery" Surgical examination (Geka Shinryo). 29. 1155-1161 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshihiro Hayata et al.: "Lung cancer examination (Haigan Kenshin)" Respiration (Kokyu). 6. 1045-1053 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Harufumi Kato et al.: "Lung cancer-Photodynamic Therapy-" Nihon Rinsho. 45. 126-131 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Katuo Aizawa: "Localization of mono-L-aspartyl chlorin e6 (NPe6) in mouse tissues" Photochemistry and Photobiology. 46. 789-793 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshihiro Hayata et al.: Lung cancer @clinical Visual Mook 1>. Zen Nihon Byouin Shuppan Kai, 216 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshihiro Hayata: 1986,Marinus Nijhoff Publisheres,Boston. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yoshihiro Hayata: Science & Technology In Japan. 9Vol.5,No.1. 49-52 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yoshihiro Hayata: Excerpta Medica Current Clinical Practice Series 40. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yoshihiro Hayata: New Trends In The Treatment of Advanced Tumors Serano Symposia Review No.12. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Harubumi Kato: Lasers in the Life Sciences. 1(1). 13-27 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: 治療学. 2Vol.17,No.179-184 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: 肺癌. No.6. 142-152 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: 臨床胸部外科. Vol.6,No.4. 80-82 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: 日本外科学会雑誌 第87回 第9号. 988-991 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: レーザー学会研究会報告別冊. 15-20 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: オプトロニクス. No.3. 111-116 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 加藤治文: レーザー研究. Vol.14,No3. 43-54 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 監修 早田義博,編集 加藤治文: "レーザー腫瘍治療マニュアル" サイエンスフォーラム, 225 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 日本レーザー医学会誌. 5-3. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 学術月報. 38-12. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] Thoracic and Cardiovascular Surgery. 90-3. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 日本外科学会誌. 86-9. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 外科. 47-10. (1985)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-31   Modified: 2017-04-05  

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