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2023 Fiscal Year Final Research Report

Development of epigenome therapy for neuroblastoma by iPS-derived tumor model and genome editing

Research Project

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Project/Area Number 19H03625
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionResearch Institute for Clinical Oncology Saitama Cancer Center

Principal Investigator

Kamijo Takehiko  地方独立行政法人埼玉県立病院機構埼玉県立がんセンター(臨床腫瘍研究所), 臨床腫瘍研究所, 所長 (90262708)

Co-Investigator(Kenkyū-buntansha) 大平 美紀  地方独立行政法人埼玉県立病院機構埼玉県立がんセンター(臨床腫瘍研究所), 臨床腫瘍研究所, 主幹 (20311384)
堺 隆一  北里大学, 医学部, 教授 (40215603)
牛島 俊和  国立研究開発法人国立がん研究センター, その他部局等, 次長 (90232818)
Project Period (FY) 2019-04-01 – 2023-03-31
Keywords神経芽腫 / iPS / NCC / ゲノム編集 / ポリコーム / ゲノムメチル化 / ヒストン修飾
Outline of Final Research Achievements

We generated iPS, iPS-derived cranial NCCs and iPS-derived trunk NCCs, and clarified epigenomic alterations and gene expression changes involved in the tumorigenesis mechanism of neuroblastoma. We focused on polycomb genes and genomic methylation for the development of novel epigenomic therapies. To identify target molecules that contribute to overcoming the resistance mechanism of polycomb inhibitors, we identified and reported the target molecules by functional analysis by genome editing and comprehensive search by omics analysis. Important findings for the development of novel epigenomic therapies were obtained, and useful information was obtained for further research.

Free Research Field

小児科学

Academic Significance and Societal Importance of the Research Achievements

難治性神経芽腫は5年生存率50%程度といまだに予後不良であり、新規治療法開発は重要な臨床上の課題である。小児がんにおけるゲノム変異は成人がんと比較して少なく、神経芽腫の遺伝子変異は網羅的に解析された結果、MYCN増幅が25%、ALK変異が7%、ATRX変異が5%程度であった。即ち、神経芽腫発がん・悪性化においてエピゲノム変異の占める役割は大きい。我々は以前から小児がんのエピゲノム異常解析に取り組んでおり、今回の研究を通じて新規エピゲノム治療開発に重要な知見が得られ、さらなる研究に向けて進歩した。

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Published: 2025-01-30  

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