Related Experiment Video
Updated: Feb 12, 2026
09:01
Mutagenesis and Functional Selection Protocols for Directed Evolution of Proteins in E. coli
Published on: March 16, 2011
31.2K
Diversity and functional evolution of the plasminogen activator system
Rishi Kumar Jaiswal1, Akhil Kumar Varshney1, Pramod Kumar Yadava1
1Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
Summary
The urokinase plasminogen activator (uPA) system, including uPA, uPAR, and PAI-1, drives cancer metastasis by regulating the tumor microenvironment. Understanding uPA signaling in epithelial-mesenchymal transitions (EMT) offers potential therapeutic targets for cancer progression.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- The urokinase plasminogen activator system comprises uPA, uPAR, and PAI-1, key serine proteases.
- This system significantly influences the tumor microenvironment and cancer cell metastasis.
- Elevated uPA system proteases correlate with poor prognosis in many human cancers.
Purpose of the Study:
- To review the molecular and cellular mechanisms of the uPA system in cancer progression.
- To explore the role of uPA signaling in epithelial-mesenchymal transitions (EMT), a driver of metastasis.
- To identify uPA system components as potential therapeutic targets.
Main Methods:
- Literature review of molecular and cellular mechanisms.
- Analysis of studies on uPA system expression in cancer cells versus normal cells.
- Examination of research linking uPA signaling to EMT.
Main Results:
- The uPA system plays a critical role in regulating the tumor microenvironment and promoting cancer metastasis.
- Differential expression of uPA system components in cancer cells highlights their potential as therapeutic targets.
- uPA signaling is implicated in driving EMT, a key process in cancer cell dissemination.
Conclusions:
- The urokinase plasminogen activator system is integral to cancer progression and metastasis.
- Targeting components of the uPA system, particularly in relation to EMT, holds promise for cancer therapy.
- Further research into uPA signaling pathways can lead to novel anti-metastatic strategies.
Related Concept Videos
02:55The Evidence for Evolution
48.4K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.4K
01:54Convergent Evolution
33.1K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
33.1K
01:24Eukaryotic Evolution
42.4K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
42.4K
02:31Synteny and Evolution
3.8K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.8K
01:13Cell Diversity
5.2K
The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular...
Multicellular...
5.2K
01:24Diversity of Archaea II
548
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
548