相关实验视频
Updated: Jul 9, 2025

08:07
Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
7.2K
在骨髓瘤中,MMP-2通过抑制CHK/MATK瘤抑制剂来调节Src激活
Deanna V Maybee1, Christopher R Cromwell2, Basil P Hubbard2
1Department of Pharmaceutical Sciences, SUNY Binghamton University School of Pharmacy and Pharmaceutical Sciences, Binghamton, New York, USA.
Cancer reports (Hoboken, N.J.)
|December 8, 2023
概括
矩阵金属蛋白酶-2 (MMP-2) 抑制瘤抑制剂CHK/MATK,促进骨髓瘤细胞迁移. 向MMP-2可能会提高多克索鲁比辛治疗的有效性,并通过恢复CHK/MATK表达来降低化学抵抗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 多克索鲁比是骨髓瘤的主要治疗方法,但化学抵抗性和在次致命剂量下增强的细胞迁移是令人担忧的.
- 矩阵金属蛋白酶-2 (MMP-2) 降解细胞外矩阵,促进转移,其核形式调节基因表达.
- 对于转移至关重要的 Src 激酶被 Csk 和 Csk 同类激酶 (CHK/MATK) 抑制.
研究的目的:
- 研究MMP-2在调节骨髓瘤中Src酶活性中的作用.
- 要确定MMP-2是否通过影响其抑制剂CHK/MATK而作为Src激酶的上游调节剂.
主要方法:
- 研究了骨髓瘤细胞中MMP-2和CHK/MATK之间的关系.
- 评估了MMP-2基因失活和CHK/MATK过度表达对多克索鲁比诱导的细胞迁移的影响.
主要成果:
- MMP-2基因通过抑制骨髓瘤中CHK/MATK的表达,起到Src酶的上游调节者的作用.
- 禁用MMP-2或过度表达CHK/MATK可以抵消多克索鲁比诱导的骨髓瘤细胞迁移.
- MMP-2抑制瘤抑制剂CHK/MATK的基因和蛋白质表达.
结论:
- MMP-2是骨髓瘤中CHK/MATK的关键抑制剂,驱动癌细胞迁移.
- 向MMP-2提供了一种有前途的策略,用于对抗骨髓瘤细胞迁移和转移.
- 抑制MMP-2可能会增强多克索鲁比辛的疗效,并克服骨髓瘤治疗中的化学抵抗.
相关概念视频
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
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
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
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
MAPK Signaling Cascades
5.6K
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...
5.6K
Role of Matrix Metalloproteases in Degradation of ECM
2.4K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
2.4K

