核受容体へのガイドリガンド
Liliane Michalik1, Walter Wahli
1Center for Integrative Genomics, National Research Center Frontiers in Genetics, University of Lausanne, Switzerland.
Cell
|May 22, 2007
まとめ
レチノ酸,ビタミンA
科学分野:
- 分子生物学は分子生物学である.
- 細胞シグナリング
- ビタミンAの代謝 代謝
背景:
- レチノ酸 (RA) は,ビタミンAの活性代謝産物である.
- RAは,レチノ酸受容体 (RAR) を活性化することによって,生物学的プロセスに影響を与えます.
研究 の 目的:
- レチノ酸によるペロキシゾーム増殖剤活性化受容体β/デルタ (PPARβ/デルタ) の新規活性化を調査する.
- RAR対PPARbeta/deltaによるレチノ酸シグナル伝達によって誘発される対立する細胞運命を明らかにする.
主な方法:
- この研究では,レチノ酸とレチノ酸の受容体間の相互作用を調査した.
- レチノ酸の信号伝達経路に対する細胞反応の分析.
主要な成果:
- レチノ酸は,レチノ酸受容体 (RAR) とペロキシソーム増殖器活性化受容体β/デルタ (PPARβ/デルタ) を両方活性化します.
- RARによるシグナリングは細胞をアポトーシスに誘導し,PPARbeta/deltaによるシグナリングは細胞の生存を促進する.
- シトプラズマのレチノ酸トランスポーターは,これらの対極的な効果を媒介する.
結論:
- レチノ酸は,細胞運命を決定する際に二重の機能性を示しています.
- レチノ酸によって活性化される特定の受容体は,細胞がアポトーシスまたは生存を経験するかどうかを決定する.
- この発見は,細胞生物学における複雑な規制メカニズムを強調しています.
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