Synthetic genetic targeting of genome instability in cancer

Babu V Sajesh1, Brent J Guppy, Kirk J McManus

  • 1Manitoba Institute of Cell Biology, Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba R3E 0V9, Canada. mcmanusk@cc.umanitoba.ca.

Cancers
|November 9, 2013
PubMed

Insights

Novel cancer therapies leverage synthetic lethality and synthetic dosage lethality to selectively target tumor cells. These approaches exploit specific genetic interactions, offering a more precise strategy than traditional chemotherapy with fewer side effects.

Area of Science:

  • Oncology
  • Genetics
  • Pharmacology

Background:

  • Cancer remains a leading global cause of mortality.
  • Current chemotherapies often cause severe side effects due to non-specific cytotoxic effects on normal tissues.
  • There is a critical need for novel cancer treatment strategies with improved tumor cell targeting.

Purpose of the Study:

  • To discuss the concepts of synthetic lethality and synthetic dosage lethality for targeted cancer therapy.
  • To explain experimental approaches for identifying novel genetic interactors in cancer.
  • To provide insight into pre-clinical validation of drug targets identified through synthetic genetic interactions.

Main Methods:

  • Review of synthetic lethality and synthetic dosage lethality concepts.
  • Explanation of three general experimental approaches for identifying genetic interactors.
  • Presentation and discussion of examples, merits, and caveats of each approach.

Main Results:

  • Synthetic genetic interactions, including synthetic lethality and synthetic dosage lethality, offer highly selective therapeutic potential.
  • These strategies target specific genetic and epigenetic alterations driving tumor formation.
  • The study outlines methods for discovering and validating novel drug targets based on these interactions.

Conclusions:

  • Synthetic lethality and synthetic dosage lethality represent promising avenues for personalized cancer medicine.
  • These approaches aim to minimize off-target effects and improve treatment efficacy.
  • Further pre-clinical validation is essential for translating these findings into clinical applications.

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
7.1K
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

1.5K
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...
8.3K
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

2.7K
In-vitro Mutagenesis01:16

In-vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
14.8K
Cancer02:18

Cancer

Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
51.8K