相关实验视频

Updated: Jan 16, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition

Induction and Analysis of Epithelial to Mesenchymal Transition

Published on: August 27, 2013

TIMP-1调制与NSCLCLC中的KRAS依赖性和EMT诱导相关

Ilamathi M-Thirusenthilarasan¹, Pankaj Ahluwalia², Nithyananda Thorenoor¹

¹Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, USA.

|September 26, 2025

概括

金属蛋白酶-1 (TIMP-1) 的组织抑制剂与非小细胞肺癌 (NSCLC) 中的基尔斯顿大鼠肉瘤病毒瘤基因同类物 (KRAS) 相反相关. 调节TIMP-1影响KRAS依赖性,细胞亡和EMT,提供治疗见解.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
癌症遗传学癌症遗传学

背景情况:

基尔斯大鼠肉瘤病毒性瘤基因同源 (KRAS) 突变在人类癌症中普遍存在,特别是非小细胞肺癌 (NSCLC).
对于瘤的生存来说,KRAS的依赖性至关重要,但瘤可以发展出抗药性.
组织金属蛋白酶-1抑制剂 (TIMP-1) 在矩阵金属蛋白酶抑制之外具有多种作用,并与癌症进展有关.

研究的目的:

研究TIMP-1调制与NSCLC中的KRAS依赖之间的关系.
探索TIMP-1如何影响KRAS表达和相关的细胞行为.
阐明KRAS突变NSCLC治疗耐药性的潜在机制.

主要方法:

在NSCLC细胞系中分析KRAS和TIMP-1表达.
实验调节TIMP-1水平 (过度表达和淘汰).
评估KRAS依赖性,RAS-GTP水平,细胞亡和上皮-介质细胞转换 (EMT) 标志物.
对KRAS和TIMP-1变种特定表达的生物信息分析.

主要成果:

在NSCLC系中观察到KRAS和TIMP-1表达之间的反相关性.
调节TIMP-1改变了KRAS水平,RAS-GTP活动和KRAS依赖性.
过度表达TIMP-1可降低KRAS依赖细胞中的亡,而TIMP-1倒置可在KRAS切除后增加KRAS依赖细胞中的亡.
调节TIMP-1影响了EMT标记物的表达,这表明EMT诱导在KRAS独立细胞中的作用.

结论:

TIMP-1在调节NSCLC中的KRAS依赖性和瘤行为方面发挥着重要作用.
调节TIMP-1会影响关键的癌症特征,如亡和EMT.
了解KRAS-TIMP-1相互作用可能会揭示NSCLC的新疗法策略.

关键词:

克拉斯 (Kras) 是一个国家.在TIMP-1中使用.表皮介质介质的过渡.非小细胞肺癌的非小细胞肺癌.上基因成上基因成

更多相关视频

An Enzyme- and Serum-free Neural Stem Cell Culture Model for EMT Investigation Suited for Drug Discovery

An Enzyme- and Serum-free Neural Stem Cell Culture Model for EMT Investigation Suited for Drug Discovery

Published on: August 23, 2016

Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants

Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants

Published on: June 6, 2025

相关概念视频

mTOR Signaling and Cancer Progression

mTOR Signaling and Cancer Progression

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...

PI3K/mTOR/AKT Signaling Pathway

PI3K/mTOR/AKT Signaling Pathway

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...

Abnormal Proliferation

Abnormal Proliferation

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...

MAPK Signaling Cascades

MAPK Signaling Cascades

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...

Tumor Progression

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...

The Ras Gene

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...