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Induction of cellular senescence by HOXB9 for tailor-made treatment

Research Project

Project/Area Number 15K10072
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General surgery
Research InstitutionTokyo Medical University

Principal Investigator

Chiba Naokazu  東京医科大学, 医学部, 講師 (90348665)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsHOXB9 / Cellular Senescence / HoxB9 / Cellular Senesence / p21 / Cellular Senecense / Cellular Scenesence / p21/p53
Outline of Final Research Achievements

Positive cells in b-Galactosidase and PML were up-regulated and p21 genes and G1 phase cells were amplified by induction of HOXB9. On the other hand, knocking down of p21 and HOXB9 also attenuated cellular senescence. The results showed that HOXB9 induces cellular senescence via p21 pathway.
In addition, in the surgically resected specimens, HOXB9 and p21 were positively correlated, suggesting that HOXB9 and p21 are related.

Academic Significance and Societal Importance of the Research Achievements

Cellular Senescenceのメカニズムに関する報告は散見されるが、臨床応用に至っているものは少なく、既に乳癌や肝細胞癌の予後因子として研究が進められているHOXB9と、これによるCellular Senescenceのメカニズム解明を意図した研究は未だかつてない。老化関連遺伝子、癌遺伝子、癌抑制遺伝子は幹細胞機能維持、細胞老化(Cellular Senescence)、細胞癌化という生物現象にそれぞれオーバーラップしながら関わっていると考えられ、以上の一連の研究成果から、HOXB9が癌治療の個別化バイオマーカーとなり、最終的には新たな分子標的治療薬の開発の一端を担う可能性がある。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (1 results)

All 2017

All Presentation (1 results)

  • [Presentation] 癌個別化治療を目的としたHOXB9によるCellular Senesence誘導2017

    • Author(s)
      千葉斉一
    • Organizer
      東京医科大学医学会総会
    • Place of Presentation
      東京医科大学病院講堂
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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