Src: regulation, role in human carcinogenesis and pharmacological inhibitors

A Y Tsygankov1, S K Shore

  • 1Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, PA, USA. alexander.tsygankov@temple.edu

Insights

The study highlights the role of Src, a non-receptor tyrosine kinase, in cell signaling and cancer. Understanding Src activation is key to developing targeted cancer therapies and inhibitors.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Cellular signaling relies on complex protein networks for communication.
  • Non-receptor tyrosine kinases, such as Src, are crucial intermediates in signal transduction pathways.
  • Viral Src genes are potent carcinogens, and similar alterations occur in human tumors.

Purpose of the Study:

  • To elucidate the role of Src in cellular signaling and its implications in cancer.
  • To explore the correlation between Src expression/activity and cancer progression.
  • To identify Src as a potential therapeutic target for cancer treatment.

Main Methods:

  • Analysis of Src protein expression and activity in various tumor types.
  • Investigation of Src's involvement in cell growth, death, differentiation, migration, and genome maintenance.
  • Review of existing Src inhibitors for drug development.

Main Results:

  • Src is overexpressed or constitutively active in a significant percentage of colon and breast cancer patients.
  • Increased Src activity correlates with advanced tumor stage and metastatic potential.
  • Knowledge of Src activation mechanisms aids in rational drug design.

Conclusions:

  • Src plays a significant role in cancer development and progression.
  • Targeting Src activation presents a promising strategy for cancer therapy.
  • Existing Src inhibitors serve as valuable lead compounds for developing novel anti-cancer drugs.

Related Concept Videos

Mutagenicity and Carcinogenicity01:25

Mutagenicity and Carcinogenicity

Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR activation may...
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...