NNTは,UVBとMITFから独立したメカニズムを通じて,リドックス依存の色素化を媒介する
Jennifer Allouche1, Inbal Rachmin1, Kaustubh Adhikari2
1Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA.
Cell
|July 7, 2021
まとめ
紫外線とMITFから独立した皮膚の色素化のための新しいメカニズムが発見されました. ニコチナミド・ヌクレオチド・トランシヒドロゲネーゼ (NNT) 酵素をターゲットにすると,皮膚の黒くなり,メラニンの生成に影響されます.
科学分野:
- 遺伝学
- 生物化学
- 皮膚科
背景:
- 皮膚の色は紫外線と遺伝因子によって決まります
- 皮膚の色素化のMITF独立経路は完全に理解されていません.
研究 の 目的:
- 皮膚の色素化の新しいメカニズムを解明するためです
- ニコチナミド核酸トランスヒドロゲンゼ (NNT) の皮膚の色素化における役割を調査する.
- 皮膚の色素化障害の治療対象としてNNTを研究する.
主な方法:
- NNT酵素を標的にして 細胞のリドックス変化を誘導する
- メラノソームの成熟とエウメラニンのレベルを評価する
- 小分子NNT阻害剤をヒトの皮膚に局所的に適用する.
- ネズミとゼブラフィッシュのNNT機能の分析
- NNTポリモルフィズムに対するヒトコホートのゲノム解析
主要な成果:
- NNTターゲティングは細胞の酸化還元作用を変化させ,チロシナーゼの分解とメラノソームの成熟に影響を与えます.
- NNTの阻害はヒトの皮膚を暗くし,マウスの皮膚の色素を増加させる.
- NNTの遺伝子改変はゼブラフィッシュのメラノサイト性染色に影響する.
- NNT単核酸ポリモルフィズムは,人間の肌の色,日焼け,日焼け防止行動と関連しています.
- 皮膚のNNT濃度の低下は,炎症後の多色素化およびレンチギンと相関しています.
結論:
- NNTによって調節される,UVとMITFから独立した皮膚の色素化の新しいメカニズムが特定されました.
- NNTは,酸化還元に依存した経路を通じてユーメラニンの生成を制御する上で重要な役割を果たします.
- NNTを局所薬で標的化すると,皮膚の色素化を管理する医学および美容学的応用の可能性が生まれます.
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