2021 Fiscal Year Final Research Report
The clinical significance of DNA damage level in childhood cancer survivors
Project/Area Number |
20K17123
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 53020:Cardiology-related
|
Research Institution | Fukushima Medical University |
Principal Investigator |
Yaegashi Daiki 福島県立医科大学, 医学部, 助手 (50866225)
|
Project Period (FY) |
2020-04-01 – 2022-03-31
|
Keywords | DNA損傷 |
Outline of Final Research Achievements |
Peripheral mononuclear cells (MNCs) were isolated from childhood cancer survivors (CCS) and dicentric chromosomes(DICs) were assayed by PNA-FISH techniques. The amounts of DICs in CCS were not significantly different from those in normal controls, but MNCs from some CCS showed very high amounts of DICs. The amounts of DICs were correlated with cumulative doses of anthracyclin and radiation doses. Furthermore, DICs in CCS with the history of cancer therapy-related cardiac dysfunction were significantly higher than those without.
|
Free Research Field |
循環器内科学
|
Academic Significance and Societal Importance of the Research Achievements |
小児がんの予後は近年劇的に改善しているが、その一方で小児がんサバイバー (CCS) の心血管イベントを含む晩期合併症が問題となっている。DNA損傷はがんや老化などとの関連が指摘されているが、CCSにおけるDNA損傷の臨床的意義は不明である。 本研究により、小児がんサバイバーにおいて抗がん治療のゲノムへの長期的影響をDICsにより推量し得ることが示唆された。抗がん剤などのgenotoxinに対する感受性には個人差が大きいため、DNA損傷の定量は小児がんサバイバーの長期フォローアップに際して有用なバイオマーカーとなり得る可能性がある。
|