• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

In vitro approach of inflammatory carcinogenesis by the elucidation of cellular response to opposing DNA damages.

Research Project

Project/Area Number 20K17055
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionKawasaki Medical School

Principal Investigator

Moriwaki Takahito  川崎医科大学, 医学部, 助教 (60734100)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsDNA損傷 / 突然変異 / がん / 炎症 / DNA修復 / 発がん / 活性酸素種
Outline of Research at the Start

炎症はゲノム不安定性を引き起こし、また発がんのリスク因子でもある。炎症によるゲノム不安定性誘発機構として、主に「酸化ストレスの増大」と「シチジンデアミナーゼの発現誘導」が提唱されている。酸化ストレスは8-オキソグアニン、シチジンデアミナーゼはウラシルなどの塩基損傷をゲノム中に生成する。生体内では、これらの塩基損傷は基本的に塩基除去修復によって効率よく正確に修復される。しかし、両者が同一塩基対に対向して存在する場合、正確な修復は非常に困難であり、ゲノム不安定性の原因になると予測される。
本研究では、対向型塩基損傷における塩基除去修復による修復効率や、他のDNA修復機構の関与の有無を検討する。

Outline of Final Research Achievements

In this study, we investigated how opposing DNA damage is recognized and repaired in cells to elucidate the mechanism of inflammatory carcinogenesis. A search for enzymes with binding activity to opposing DNA damage yielded a band indicating the presence of a protein that binds specifically to it. Glycosylase activity was confirmed and showed that uracil was actively removed from opposing DNA damage, but no activity for removal of 8-oxoguanine was observed; observation of AP lyase activity by Trapping assay showed that removal of uracil in opposing DNA damage was not dependent on UNG or UDG, suggesting that the removal of uracil in opposing DNA damage is carried out by mono-functional glycosylases such as UNG and UDG. Taken together, these results indicate that cells have specific repair mechanisms for opposing DNA damage.

Academic Significance and Societal Importance of the Research Achievements

本研究によりヒトに対向型DNA損傷を認識するタンパク質が存在することが明らかとなり、またその機能の一端が分かった。対向型DNA損傷は炎症性発がんと密接に関連していると予測されるため、このタンパク質を同定し、その機能を明らかにすることは炎症性発がんの理解につながる。全がんの15%は何らかのウイルス感染とそれに伴う炎症が原因であると見積もられている。それゆえ炎症性発がんの理解はがんの罹患リスクそのものの低下に大きく寄与すると期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (1 results)

  • [Journal Article] A Case of Mucopolysaccharidosis II Caused by a Novel Variant with Skin Linear Hyperpigmented Streaks along Blaschko’s Lines2023

    • Author(s)
      Sofronova Viktoriia、Gurinova Elizaveta、Petukhova Diana、Fukamatsu Hiroko、Yamamoto Takenobu、Aoyama Yumi、Golikova Polina、Moskvitin Gavril、Ivanova Roza、Savvina Mira、Vasilev Filipp、Moriwaki Takahito、Terawaki Seigo、Sukhomyasova Aitalina、Maksimova Nadezhda、Otomo Takanobu
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 6 Pages: 5647-5647

    • DOI

      10.3390/ijms24065647

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SPRTN and TDP1/TDP2 Independently Suppress 5-Aza-2′-deoxycytidine-Induced Genomic Instability in Human TK6 Cell Line2022

    • Author(s)
      Nakano Toshiaki,Moriwaki Takahito,Tsuda Masataka,Miyakawa Misa,Hanaichi Yuto,Sasanuma Hiroyuki,Hirota Kouji,Kawanishi Masanobu,Ide Hiroshi,Tano Keizo,Bessho Tadayoshi
    • Journal Title

      Chemical Research in Toxicology

      Volume: 35 Issue: 11 Pages: 2059-2067

    • DOI

      10.1021/acs.chemrestox.2c00213

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A novel nonsense variant in ARID1B causing simultaneous RNA decay and exon skipping is associated with Coffin-Siris syndrome2022

    • Author(s)
      Sofronova Viktoriia、Fukushima Yu、Masuno Mitsuo、Naka Mami、Nagata Miho、Ishihara Yasuki、Miyashita Yohei、Asano Yoshihiro、Moriwaki Takahito、Iwata Rina、Terawaki Seigo、Yamanouchi Yasuko、Otomo Takanobu
    • Journal Title

      Human Genome Variation

      Volume: 9 Issue: 1 Pages: 1-6

    • DOI

      10.1038/s41439-022-00203-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hematopoietic Disorders, Renal Impairment and Growth in Mucopolysaccharidosis-Plus Syndrome2022

    • Author(s)
      Sofronova Viktoriia、Iwata Rina、Moriya Takuya、Loskutova Kiunniai、Gurinova Elizaveta、Chernova Mairanush、Timofeeva Anastasia、Shvedova Anna、Vasilev Filipp、Novgorodova Saina、Terawaki Seigo、Moriwaki Takahito、Sukhomyasova Aitalina、Maksimova Nadezhda、Otomo Takanobu
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 10 Pages: 5851-5851

    • DOI

      10.3390/ijms23105851

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PRDX1 is essential for the viability and maintenance of reactive oxygen species in chicken DT402021

    • Author(s)
      Moriwaki Takahito、Yoshimura Akari、Tamari Yuki、Sasanuma Hiroyuki、Takeda Shunichi、Seki Masayuki、Tano Keizo
    • Journal Title

      Genes and Environment

      Volume: 43 Issue: 1 Pages: 1-8

    • DOI

      10.1186/s41021-021-00211-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-Dose Irradiation Inhibits Motility and Induces Autophagy in Caenorhabditis elegans2021

    • Author(s)
      Yamasaki Akira、Suzuki Michiyo、Funayama Tomoo、Moriwaki Takahito、Sakashita Tetsuya、Kobayashi Yasuhiko、Zhang-Akiyama Qiu-Mei
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 18 Pages: 9810-9810

    • DOI

      10.3390/ijms22189810

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A case of atypical Coffin-Siris syndrome with a novel nonsense mutation in the ARID1B gene.2021

    • Author(s)
      Sofronova Viktoriia, Naka Mami, Yu Fukushima, Moriwaki Takahito, Nagata Miho, Ishihara Yasuki, Yonei Ayumi, Asano Yoshihiro, Masuno Mitsuo, Yamanouchi Yasuko, Otomo Takanobu
    • Organizer
      日本人類遺伝学会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi