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Caspase, a family of cysteine proteases, serve as effectors in apoptosis. The ced3 gene in C.elegans was first identified to be involved in apoptosis. This gene encodes the ced-3 caspase that is similar to the interleukin-1-beta converting enzyme or ICE in mammals. In addition to apoptosis, caspases also function in the inflammatory response. Inflammatory caspases are essential in activating pro-inflammatory cytokines that recruit immune cells and block the replication of pathogens inside...
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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...
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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...
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MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
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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.
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HDAC6 / 侵袭体处理途径对于炎症体形成的重要性取决于背景.

Longlong Wang1, Shihua Shi1, Adeline Unterreiner2

  • 1Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.

The Journal of biological chemistry
|January 10, 2024
PubMed
概括

根据细胞类型和实验条件,在炎症酶激活中,基因组脱乙酶6 (HDAC6) 的重要性有所不同. 它的作用取决于上下文,对于炎细胞组合来说并不普遍必要.

关键词:
在DARP中,DARPin是在 HDAC6 中.降解剂降解剂是一种降解剂.一些炎症一些炎症抑制剂 抑制剂 抑制剂互乐金是一种介质蛋白.

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科学领域:

  • 免疫学 免疫学 免疫学
  • 细胞生物学 细胞生物学
  • 分子生物学分子生物学

背景情况:

  • 炎症体是先天免疫的关键蛋白质复合体,调解炎症反应.
  • 之前的研究表明,基因组脱乙酶6 (HDAC6) 和侵略性酶处理途径 (APP) 对于永生巨细胞中炎症酶组合至关重要.
  • 在不同的细胞环境中,HDAC6在炎症酶激活中的确切作用尚不清楚.

研究的目的:

  • 用各种细胞模型研究HDAC6在炎症酶激活中的作用.
  • 为了确定HDAC6对炎症酶组合的依赖性是否在原始细胞和人体系统中得到保留.
  • 为了澄清HDAC6对炎症体功能的贡献的上下文依赖性.

主要方法:

  • 利用来自HDAC6-消去或受损小鼠的原发性骨髓衍生巨细胞 (BMDMs).
  • 采用人类外周血液单核细胞和单细胞细胞系,具有受损的HDAC6-ubiquitin相互作用和APP.
  • 在人类巨细胞系中应用了一种新的HDAC6降解剂,以耗尽HDAC6.

主要成果:

  • 在缺乏功能性HDAC6.6的初级BMDM中,炎症酶激活在很大程度上是正常的.
  • 在受损的HDAC6-ubiquitin相互作用和APP.PP.的人类细胞中,炎症酶激活受到中度影响.
  • 在人类巨细胞系中使用降解剂部分受损的炎症酶激活HDAC6的耗尽.

结论:

  • HDAC6并不普遍需要用于炎症酶激活.
  • 在炎症酶组合中HDAC6的重要性取决于背景,根据细胞类型和实验操纵而有所不同.
  • 这些发现完善了我们对炎症细胞调节的理解,并强调了需要进行特定背景调查的必要性.