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Elucidation of the bone development mechanism of Hmga2 by next-generation sequencing

Research Project

Project/Area Number 22K21049
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0907:Oral science and related fields
Research InstitutionThe Nippon Dental University

Principal Investigator

Negishi Tsubasa  日本歯科大学, 生命歯学部, 助教 (70963031)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsHmga2 / 骨芽細胞分化 / MC3T3-E1 / RNA-seq / ChIP-seq / MC3T3-E1
Outline of Research at the Start

構造的転写因子High mobility group A2(Hmga2)遺伝子は幹細胞や腫瘍細胞に発現する遺伝子として知られているが、Hmga2ノックアウト(KO)マウスでは骨と体脂肪の形成が著しく減少し、体躯が矮小化したピグミー表現型を示す。ヒトHmga2遺伝子の異常でも同様の症状を呈すことから、Hmga2の骨形成への関与が予想されるが、その役割は全く不明である。本研究ではHmga2による骨芽細胞分化誘導機構に焦点を当て、RNA-seq・ChIP-seqといった次世代シーケンス技術を用いてHmga2の働きを網羅的に解析し、分子生物的・組織化学的に知見を発展・追求していく。

Outline of Final Research Achievements

An architectural transcription factor, high mobility group A2 (Hmga2), is known to be expressed in stem cells and tumor cells. Knock-outing Hmga2 gene causes a pygmy phenotype with bone growth reduction and fat hypo-formation in mice, and it appears consistent with human. Although these strongly suggest that Hmga2 plays an important role in bone development, studies on the molecular pathway are completely unknown. In this study, we focused on the mechanism of osteoblast differentiation by Hmga2, and comprehensively analyzed the functions of Hmga2 using next-generation sequencing technologies such as RNA-seq and ChIP-seq.

Academic Significance and Societal Importance of the Research Achievements

超高齢社会に突入した現在は骨代謝不調が原因となりQOLが低下するケースが急激に増加しており、骨形成制御機構を解明することは、骨折治癒促進や骨再生療法確立に貢献するとともに、骨粗鬆症等の代謝性骨疾患の治療法開発にも極めて重要である。本研究により、Hmga2依存性の骨芽細胞分化関連遺伝子発現制御機構の存在が示唆された。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (1 results)

All 2023

All Presentation (1 results)

  • [Presentation] High mobility group AT-hook 2によるマウス顔面骨形成および骨芽細胞分化の制御2023

    • Author(s)
      根岸翼, 美原希美, 今井一志
    • Organizer
      第66回歯科基礎医学会学術大会
    • Related Report
      2023 Annual Research Report

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Published: 2022-09-01   Modified: 2025-01-30  

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