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

2022 Fiscal Year Final Research Report

Development of GBM-therapeutic recombinant viruses that encodes miR-dependent genome-editing system.

Research Project

  • PDF
Project/Area Number 20H03559
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionHokkaido University

Principal Investigator

Kondo Toru  北海道大学, 遺伝子病制御研究所, 教授 (30270573)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords脳腫瘍 / ゲノム編集 / マイクロRNA / 組換えウイルス / 癌幹細胞
Outline of Final Research Achievements

We successfully generated novel adeno-associated virus (AAV) that encodes the expression cassettes of both Cas9 with complementary sequence of microRNA (miR), which is expressed in non-tumor cells including nerural stem cells (NSC) but not in glioblastoma (GBM) stem cells (GICs), and guide RNA for a GIC functional factor. We found that this AAV killed GICs but not NSCs in culture. We confirmed that the intravenously injected AAV prevented GIC tumorigenesis in GIC-transplanted mice and extended their survival. Thus, we succeeded to generate the novel genome-edited AAV that specifically kills GBM in a miR expression-dependent manner.

Free Research Field

幹細胞生物学

Academic Significance and Societal Importance of the Research Achievements

本研究は、細胞(種)やその状況に発現変化するmiRを用いて任意の標的細胞で外来遺伝子の発現制御が可能であることを証明した。同様の方法を用いることによりmiRにより制御を受ける全ての細胞を対象とした様々な研究への応用が可能である。更に、今回作製したmiRの発現逆依存的にGIC機能因子をゲノム編集するAAVは、GBMと適用可能な他の悪性腫瘍に対する新規遺伝子治療用ウイルスとなる可能性が高く、その社会的意義は非常に大きい。

URL: 

Published: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi