相关实验视频
Updated: Jun 29, 2025

08:07
Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
7.2K
USP3通过对EPHA2进行双化和激活PI3K/AKT信号通路来促进骨髓瘤的进展
Anan Li1,2,3, Shijiang Wang1,2,3, Jiangbo Nie1,2,3
1Orthopedic Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
Cell death & disease
|March 27, 2024
概括
乌比基特异性蛋白酶3 (USP3) 通过通过EPHA2激活PI3K/AKT通路来促进骨髓瘤 (OS) 的生长和扩散. 针对USP3/EPHA2轴可能为骨髓瘤患者提供新的治疗策略.
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:
- 乌比基特异蛋白酶3 (USP3) 与各种癌症有关.
- USP3在骨髓瘤 (OS) 病变发生过程中的特定作用尚不清楚.
- 了解USP3在OS中的功能对于开发有针对性的疗法至关重要.
研究的目的:
- 研究USP3在骨髓瘤中的生物功能.
- 阐明USP3在OS进展中的作用背后的分子机制.
- 评估USP3/EPHA2轴作为OS治疗目标的潜力.
主要方法:
- 在OS组织和正常骨中对USP3表达的比较分析.
- 评估USP3对OS细胞增殖,迁移和入侵的影响.
- 研究USP3与EPHA2的相互作用及其对PI3K/AKT通路的影响.
- 使用USP3截断突变来识别关键交互领域.
主要成果:
- 在骨髓瘤中USP3表达升高,与患者预后不佳相关.
- 过度表达USP3增强OS细胞的增殖,迁移和入侵.
- 通过与EPHA2相互作用,USP3激活PI3K/AKT通路,减少其降解.
- USP3的氨基酸203对EPHA2的相互作用至关重要;EPHA2的敲击扭转了USP3的瘤效应.
结论:
- 通过促进细胞增殖和转移,USP3在骨髓瘤中起到瘤基因的作用.
- USP3/EPHA2相互作用和随后的PI3K/AKT通路激活是OS中的关键机制.
- USP3/EPHA2轴代表了骨髓瘤治疗的有前途的新型治疗标.
相关概念视频
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
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
mTOR Signaling and Cancer Progression
3.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.8K
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
Interactions Between Signaling Pathways
6.3K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.3K
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

