相关实验视频
Updated: May 31, 2025
08:07
Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
7.1K
转基因酶通过YY1-PAK4轴促进骨髓瘤的进展
Doudou Jing1,2, Wei Wu2, Xin Huang2
1Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, China.
The FEBS journal
|January 24, 2025
概括
转基因酶 (TKT) 通过与阴阳1 (YY1) 相互作用,激活PI3K-Akt通路来驱动骨髓瘤的生长. 在临床前研究中,一种新型,YY1-PEP,有效地抑制了骨髓瘤的进展.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 骨髓瘤是一种具有挑战性的青少年骨癌,具有高转移潜力和遗传异质性.
- 瘤代谢是一个持续的漏洞,提供了一个治疗目标.
- 转基因酶 (TKT) 是酸通路酶,在各种癌症中被上调.
研究的目的:
- 研究转基因基因酶 (TKT) 在骨髓瘤扩散中的作用.
- 阐明TKT促进骨髓瘤的分子机制.
- 开发针对骨髓瘤的有针对性的治疗策略.
主要方法:
- 研究了TKT在骨髓瘤细胞增殖中的非代谢作用.
- 确定了TKT在特定的氨基酸残留物中直接与阴阳1 (YY1) 结合.
- 评估了TKT-YY1相互作用对P21激活激酶4 (PAK4) 表达和PI3K-Akt信号传递的影响.
- 在体外和体外设计和测试了一种抑制剂 (YY1-PEP).
主要成果:
- TKT非代谢性地促进骨髓瘤细胞的增殖.
- TKT直接与YY1 (残留物201-228) 结合,增强YY1与PAK4促进体的结合.
- 这种相互作用导致PAK4表达的增加和PI3K-Akt通路的激活.
- 在临床前模型中,YY1-PEP显示出显著的抗骨髓瘤效应.
结论:
- 通过涉及YY1和PAK4的非代谢途径,TKT是骨髓瘤进展的关键驱动因素.
- 针对TKT-YY1与YY1-PEP的相互作用,是骨髓瘤的一种有前途的治疗策略.
相关概念视频
01:22PI3K/mTOR/AKT Signaling Pathway
3.4K
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...
3.4K
01:16TGF - β Signaling Pathway
7.2K
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...
7.2K
01:07MAPK Signaling Cascades
5.1K
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...
5.1K
01:09Cytoskeletal Linker Proteins - Plakins
2.3K
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
2.3K
01:13Cytoskeletal Accessory Proteins
3.0K
The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
3.0K
01:45Destabilization of Microtubules
2.6K
The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
2.6K