在ferroptosis过程中,NINJ1诱导了血破裂和释放与损伤相关的分子模式分子
Saray Ramos1, Ella Hartenian1, José Carlos Santos1
1Department of Immunobiology, University of Lausanne, Epalinges, Switzerland.
The EMBO journal
|February 24, 2024
概括
宁林-1 (NINJ1) 蛋白在ferroptosis期间执行血膜破裂,这是一个调节的细胞死亡. 缺少NINJ1可以防止这种破裂,这表明NINJ1是缓解ferroptosis诱导的炎症的治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
背景情况:
- 铁亡是依赖铁的细胞死亡,由膜破裂标志着.
- 与铁亡相关的血膜破裂 (PMR) 的确切机制尚不清楚.
- 众所周知,宁林-1 (NINJ1) 在热中执行PMR.
研究的目的:
- 调查NINJ1在与铁亡相关的PMR中的作用.
- 为了确定NINJ1是否在ferroptosis中积极执行PMR.
主要方法:
- 通过细胞培养模型 (巨细胞,纤维细胞) 研究了NINJ1在铁亡中的作用.
- 在ferroptosis期间分析了NINJ1的寡合化.
- 评估了忍者1缺乏对铁灭症进展和PMR的影响.
- 检查了NINJ1对早期膜完整性损失和DAMP释放的要求.
主要成果:
- 在ferroptosis过程中,NINJ1进行寡合.
- 忍者1缺陷显著保护细胞免受铁灭相关的PMR.
- 对于最初的铁灭事件,如脂质过氧化或细胞胀,不需要NINJ1.
- 在PMR之前,NINJ1对于早期的血膜完整性损失至关重要.
- NINJ1调解铁细胞释放细胞溶性蛋白和DAMP.
结论:
- NINJ1在铁亡中充当PMR的执行者,类似于其在热亡中的作用.
- 准NINJ1可能是一个治疗策略,以减少与铁亡相关的炎症.
相关概念视频
Necrosis
4.5K
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...
4.5K
Overview of Cell Death
7.3K
Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
7.3K
The Intrinsic Apoptotic Pathway
6.5K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.5K
The Extrinsic Apoptotic Pathway
6.4K
The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
6.4K
Phagocytosis of Apoptotic Cells
3.8K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
3.8K
Apoptosis
11.4K
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
11.4K


