豚のAキナーゼ相互作用タンパク質1 (AKIP1) の機能の評価 酸化ストレスとミトコンドリア機能の中央調節体
Agnieszka Bak1, Arne Hinrichs2, Anna Schwaiger3
1Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, 85354 Freising, Germany.
International journal of molecular sciences
|August 28, 2025
まとめ
キナーゼ相互作用タンパク質1 (AKIP1) は,豚の酸化ストレスから保護します. AKIP1の過剰発現は,抗酸化防御とミトコンドリアの安定性を高め,異種移植における臓器移植の生存を向上させる上で極めて重要です.
科学分野:
- 生物医学
- 細胞生物学
- 翻訳医学
背景:
- 酸化ストレスが 多くの病気や臓器移植の合併症に 関わっている
- ミトコンドリアの機能障害,DNAの損傷,炎症を引き起こし,細胞の活性を損なう.
- キナーゼ相互作用タンパク質1 (AKIP1) は酸化ストレスを調節することが知られている.
研究 の 目的:
- 豚の細胞における酸化ストレスに対するAKIP1の保護作用を調査する.
- 細胞死経路 (アポプトーシス,ネクロシス,フェロプトーシス) に対するAKIP1の影響を評価する.
- 酸化作用下でのミトコンドリア機能に対するAKIP1の影響を評価する.
主な方法:
- AKIP1の変異性豚の生成
- 酸化ストレスによる細胞死亡のインビトロ評価
- カスパース-3/7の活性,MPTP誘発性死滅,脂質過酸化の測定
- ミトコンドリアの超酸化物生成と呼吸の分析
主要な成果:
- AKIP1過剰発現は,アポトーシスとMPTP媒介性死滅を減少させた.
- 脂質過酸化の減少はフェロプトーシスに対する保護を示す.
- ミトコンドリアの超酸化物産生が低下し,ミトコンドリアの呼吸が増加した.
- H2O2誘発の酸化後,ミトコンドリアの回復が改善された.
結論:
- AKIP1は豚の細胞における細胞の抗酸化防御とミトコンドリアの安定性を高める.
- この研究は,酸化傷害を研究するための翻訳的プラットフォームを提供します.
- AKIP1は,異種移植における移植生存率の改善の可能性を示しています.
関連する概念動画
PI3K/mTOR/AKT Signaling Pathway
3.9K
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...
3.9K
mTOR Signaling and Cancer Progression
3.9K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.9K
Peroxisomes
14.3K
Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
14.3K
Electron Transport Chain: Complex I and II
15.0K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
15.0K
Regulation of the Unfolded Protein Response
2.6K
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...
2.6K
The JAK-STAT Signaling Pathway
9.2K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
9.2K


