| Project/Area Number |
16K09998
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Pediatrics
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| Research Institution | Keio University |
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Principal Investigator |
Amano Naoko 慶應義塾大学, 医学部(信濃町), 共同研究員 (70348689)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 副腎機能低下症 / 発生分化 / 副腎 / 副腎低形成症 / 副腎皮質 / 発生 / 遺伝子 / 小児内分泌学 |
|---|
| Outline of Final Research Achievements |
We enrolled 63 Japanese children (59 families) with biochemically uncharacterized PAI, and sequenced 12 PAI-associated genes. We calculated the proportion of mutation-carrying patients according to demographic characteristics. We identified genetic defects in 50 (85%) families: STAR in 19, NR0B1 in 18, SAMD9 in seven, AAAS in two, NNT in two, MC2R in one and CDKN1C in one. This work was published in the peer-reviewed academic journal‘European journal of endocrinology.’
We identified submicroscopic deletions in the gene A in three patients with adrenal hypoplasia. The in vitro study using the HEK293 cells having stable expression of gene A revealed that β-catenin producing-capacity would decrease in the identified gene A-deleted cells.
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| Academic Significance and Societal Importance of the Research Achievements |
本邦おける「生化学診断が困難な原発性副腎皮質機能低下症」の分子基盤および各単一遺伝子疾患の臨床的特徴を明らかとした。さらに先天性副腎低形成症の新規責任遺伝子を発見し、その分子機構がWnt-βカテニンシグナル系の低下であることを明らかにする。最終的にはヒトの副腎発生分化におけるWnt-βカテニンシグナル系の意義を解明することが目標である。
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