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development of a novel imaging probe for alteration of mitochondria function based on cancer therapy

Research Project

Project/Area Number 25293262
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Radiation science
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

Magata Yasuhiro  浜松医科大学, 光尖端医学教育研究センター, 教授 (20209399)

Co-Investigator(Kenkyū-buntansha) SAKAHARA HARUMI  浜松医科大学, 医学部, 教授 (10187031)
SUZUKI CHIE  浜松医科大学, 光尖端医学教育研究センター, 助教 (20637285)
OGAWA MIKAKO  北海道大学, 薬学研究院, 教授 (20344351)
高島 好聖  浜松医科大学, メディカルフォトニクス研究センター, 助教 (70525592)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2015: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords放射性医薬品 / がん / PET / SPECT / ミトコンドリア / 膜電位 / 多剤耐性輸送タンパク / 放射線 / 薬学 / イメージングプローブ
Outline of Final Research Achievements

For the purpose prediction of therapeutic effect and early judgment of the therapy, we developed a novel imaging probe to estimate mitochondria function which relates "apoptosis", or "oxygen". We have already obtained the radioiodinated labeled compound I-125-DPP which accumulates to cells depending on their mitochondrial membrane potential. Unfortunately, this compound was excreted from the cells by P-glycoprotein (P-gp) just after uptake in the cells. In order to improve this problem, we designed and synthesized a new drug I-125-DESP including a styilbene group which is an inhibitor against P-gp. I-125-DESP was uptake 6.7 times higher into cancer cells compared with I-125-DPP. Moreover, almost I-125-DESP was not excreted from the cancer cells. These results indicate POC of the drug design of this compound. Then, we performed in vivo imaging studies with an animal SPECT machine. Unfortunately, high uptake of radioactivity in the liver was observed and tumor could not visualized.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (1 results)

All 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results)

  • [Journal Article] Development of radioiodinated lipophilic cationic compounds for myocardial imaging.2015

    • Author(s)
      Sakai T, Saito Y, Takashima M, Ogawa M, Magata Y.
    • Journal Title

      Nucl Med Biol

      Volume: 42 Pages: 482-487

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant

URL: 

Published: 2013-05-21   Modified: 2019-07-29  

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