The emerging roles of srGAPs in cancer

Vaishali Ji1, Chandra Kishore2

  • 1Department of Botany, Patna Science College, Patna, 800005, India.

Molecular Biology Reports
|November 26, 2021
PubMed

Insights

GTPase activating proteins (GAPs) initially viewed as inhibitors, are now recognized for their crucial roles in cancer development. Recent research highlights their diverse functions in various cancers, particularly srGAPs.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Oncology

Background:

  • GTPase activating proteins (GAPs) were traditionally considered inhibitors of cell signaling by activating RhoGTPase activity.
  • Dysregulation of GAPs is increasingly implicated in the development of various cancers, including glioblastoma, colorectal, breast, and renal cancers.

Purpose of the Study:

  • To review recent advancements in understanding the roles of GAPs, specifically SLIT-ROBO Rho GTPase-activating proteins (srGAPs), in cancer.
  • To highlight the non-conventional functions of GAPs in different cellular contexts relevant to carcinogenesis.

Main Methods:

  • Literature review of recent studies on GAPs and srGAPs in cancer.
  • Analysis of the dual role of GAPs in cell signaling and cancer development.

Main Results:

  • GAPs exhibit multifaceted roles beyond simple inhibition, actively participating in carcinogenesis.
  • Specific srGAP family members display significant involvement in the progression of multiple cancer types.

Conclusions:

  • GAPs are critical players in cancer, with functions extending beyond their canonical roles.
  • Further investigation into srGAPs is essential for understanding their therapeutic potential in oncology.

Related Concept Videos

Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

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...
9.3K
Abnormal Proliferation02:23

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...
4.7K
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...
7.1K
Cancer Survival Analysis01:21

Cancer Survival Analysis

Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
478
The Ras Gene02:38

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...
6.5K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
5.6K