LKB1-TSSK1B轴控制YAP酸化以调节Hippo-YAP通路的作用
Cho-Long Kim1, Su-Bin Lim1, Sue-Hee Choi1
1Department of Biomedical Sciences, Graduate School, Ajou University School of Medicine, Suwon, 16499, South Korea.
Cell death & disease
|January 20, 2024
概括
通过新的途径,TSSK1B酸化YES相关蛋白 (YAP),通过抑制细胞增殖和瘤转化,作为瘤抑制剂. 这一发现突显了Hippo-YAP通路中的新调节机制.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 是的关联蛋白 (YAP) 是Hippo通路中的一个关键的转录协活性剂,对瘤发生至关重要.
- YAP活动由核心Hippo路径激酶的酸化调节,控制其局部化和功能.
- 越来越多地认识到独立于核心Hippo组件的替代YAP酸化途径.
研究的目的:
- 为了确定YAP酸化和活性的新型调节剂.
- 调查CAMK超级家族成员TSSK1B在YAP调控中的作用.
- 阐明TSSK1B影响细胞增殖和瘤转变的分子机制.
主要方法:
- 通过TSSK1B.研究了YAP的相互作用和酸化.
- 利用生物化学分析来分析YAP-TEAD复杂的形成.
- 在相关模型中评估了TSSK1B对细胞增殖和瘤转化的影响.
主要成果:
- TSSK1B作为YAP的负调节剂,抑制其增殖和瘤转化.
- 通过LKB1-TSSK1B轴,TSSK1B通过Ser94直接化YAP,从而抑制YAP-TEAD复合体的形成.
- 此外,TSSK1B还通过通过TSSK1B-LATS1/2轴在Ser127的酸化来抑制YAP.
结论:
- TSSK1B是YAP的新型负调节剂,通过不同的酸化事件起作用.
- 这些发现揭示了Hippo-YAP通路内的新层多层调节.
- TSSK1B介导的YAP抑制为YAP驱动的癌症提供了潜在的治疗策略.
相关概念视频
PI3K/mTOR/AKT Signaling Pathway
3.6K
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...
3.6K
The JAK-STAT Signaling Pathway
8.9K
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...
8.9K
Hedgehog Signaling Pathway
7.4K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
7.4K
cAMP-dependent Protein Kinase Pathways
6.4K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.4K
MAPK Signaling Cascades
5.5K
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...
5.5K
GTPases and their Regulation
8.4K
Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒ small G-proteins consisting of a single domain and large multi-domain G-proteins.
Large G-proteins,...
Large G-proteins,...
8.4K


