BASP1降低了RANKL诱导的骨质结晶发生的调节.
Anuj Anuj1, Nina Reuven1, Stefan G E Roberts2
1Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, 76100, Israel.
Experimental cell research
|August 24, 2023
概括
脑酸溶解蛋白1 (BASP1) 负面调节骨质细胞的形成. 降低BASP1水平增强NFκB连接体 (RANKL) 的受体激活器诱导的骨质结晶发生,促进骨质再吸收.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 骨生物学 骨生物学 骨生物学
背景情况:
- NFκB连接体的受体激活剂 (RANKL) 驱动骨质细胞与单细胞/巨细胞的分化.
- 骨质细胞生成涉及显著的基因表达变化.
- 脑酸溶解蛋白1 (BASP1) 通过RANKL迅速下调.
研究的目的:
- 为了研究BASP1在RANKL诱导的骨质细胞形成中的作用.
- 为了确定BASP1是否起到骨质细胞形成的调节作用.
主要方法:
- 使用初级小鼠骨髓巨细胞 (BMM) 和RAW 264.7细胞.
- 操纵了BASP1的表达 (敲击和过度表达).
- 分析了RANKL诱导的骨质细胞生成,细胞融合和基因表达.
主要成果:
- 在BASP1 Knockdown中增强了RANKL诱导的骨质细胞生成,细胞融合和骨质细胞大小.
- 过度表达BASP1可以抑制骨质细胞形成.
- 在BASP1中,关键的骨质细胞生成基因 (Nfatc1,Dc-stamp,Ctsk,Itgb3,Mmp9) 的表达增加.
结论:
- BASP1是RANKL诱导的骨质细胞形成的负调节者.
- 通过RANKL降低BASP1的调节,可以消除骨质细胞形成的阻碍.
- BASP1调节由RANKL诱导的亲骨质细胞原性基因表达程序.
相关概念视频
Receptor Downregulation in MVBs
2.1K
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...
2.1K
Osteoclasts in Bone Remodeling
3.0K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
3.0K
The JAK-STAT Signaling Pathway
9.0K
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...
9.0K
TGF - β Signaling Pathway
7.4K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.4K
The Intrinsic Apoptotic Pathway
6.6K
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...
6.6K
NF-κB-dependent Signaling Pathway
7.5K
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...
7.5K


