GSK-3:中国人的"王牌"
1Department of Biology, Oklahoma School of Science and Mathematics, Oklahoma City, Oklahoma, USA.
Cancer biotherapy & radiopharmaceuticals
|May 15, 2024
概括
糖原合成酶激酶-3 (GSK-3) 调节Wnt信号和细胞过程. 它在癌症中的作用凸显了对GSK-3抑制剂的需求,因为它影响微RNA和细胞命运.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
背景情况:
- 糖原合成酶激酶-3 (GSK-3) 是β-catenin信号传递 (Wnt信号传递) 的一个关键调节器.
- Wnt信号和β-catenin的失调与许多人类癌症有关.
- GSK-3的确切作用仍在调查中,推动了针对性抑制剂的研究.
研究的目的:
- 审查GSK-3的监管,重点关注其与Wnt信号的相互作用.
- 要突出GSK-3与涉及多能性和上皮-介质细胞过渡 (EMT) 的微RNA (miRNA) 的相互作用.
- 确定GSK-3作为细胞过程调节中的关键激酶.
主要方法:
- 关于GSK-3法规的文献审查.
- 分析GSK-3在Wnt信号通路中的作用.
- 检查GSK-3与与癌症相关的miRNAs的相互作用.
主要成果:
- GSK-3影响Wnt信号破坏复合体,影响β-catenin的稳定性.
- GSK-3调节与多能性和EMT相关的miRNAs,这些过程对癌症发展至关重要.
- 证据表明GSK-3在癌症中酶介导的转录调节中的作用.
结论:
- GSK-3是细胞调节中的关键激酶,影响Wnt信号传递和miRNA表达.
- GSK-3 作为蛋白质和非编码RNA的潜在主调节剂,影响细胞命运.
- 针对GSK-3可能为各种癌症提供治疗策略.
相关概念视频
Protein Kinases and Phosphatases
13.1K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
13.1K
cAMP-dependent Protein Kinase Pathways
6.3K
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,...
6.3K
MAPK Signaling Cascades
5.4K
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...
5.4K
Amplifying Signals via Enzymatic Cascade
8.5K
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
8.5K
GTPases and their Regulation
8.3K
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,...
8.3K
PI3K/mTOR/AKT Signaling Pathway
3.5K
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...
3.5K


