関連する実験動画
Updated: May 5, 2026

08:55
Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis
Published on: August 7, 2018
10.1K
受容体相互作用タンパク質キナーゼ-3は,TNF-αへの細胞死滅反応を決定する
1Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
Cell
|June 16, 2009
まとめ
受容体相互作用タンパク質キナーゼ3 (RIPK3) は,腫瘍ネクロシス因子アルファ (TNF-alpha) によって誘発される細胞死経路であるネクロシスに不可欠です. RIPK3の活性化により,ネクロスを誘発する複合体が形成され,炎症や組織損傷が防止されます.
科学分野:
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
- 分子生物学は分子生物学である.
背景:
- Smac模倣薬とTNF-αは,RIPK1を含む複合体を通して,アポトーシスをシネジスティックに誘導する.
- カスパース阻害剤はアポトーシスを阻害しますが,一部の細胞系では死滅を促進します.
研究 の 目的:
- アポトーシスとネクロシスの間のスイッチを決定する分子プレーヤーを特定する.
- TNF-α誘発細胞死におけるRIPキナーゼファミリーの役割を解明する.
主な方法:
- ゲノム全体のsiRNAスクリーンで,死滅を調節する遺伝子を特定します.
- 様々な細胞系におけるRIPK3発現とキナーゼ活性に関する分析.
- RIPK3 ノックアウトマウスの胚性線維芽細胞と動物における死滅の評価.
主要な成果:
- RIPK3はネクロース誘発に不可欠であると特定されました.
- RIPK3発現レベルは,死滅反応と相関しています.
- RIPK3キナーゼの活性と,RIPK1へのリクルートメントは,ネクロシスにとって重要である.
- RIPK3のノックアウトマウスは,急性炎のモデルでネクロスへの抵抗と炎症の減少を示した.
結論:
- RIPK3は,TNF-αファミリーのサイトカインに対する反応におけるネクロシスの重要な決定因子である.
- RIPK3をターゲットにすることで,炎症性疾患の治療戦略を提供することができる.
関連する概念動画
NF-κB-dependent Signaling Pathway
7.6K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.6K
Receptor Downregulation in MVBs
2.0K
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
2.0K
Regulation of the Unfolded Protein Response
2.2K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.2K
Necrosis
5.2K
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
5.2K
MAPK Signaling Cascades
7.3K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
7.3K
PI3K/mTOR/AKT Signaling Pathway
5.1K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
5.1K

