Targeting RAD51-Mediated Homologous Recombination as a Treatment for Advanced Solid and Hematologic Malignancies:

Erica S Tsang1, Pamela N Munster1

  • 1Division of Hematology and Oncology, University of California San Francisco, San Francisco, CA, 94158, USA.

Oncotargets and Therapy
|December 20, 2022
PubMed

Insights

RAD51 protein is crucial for DNA repair and shows promise as a cancer biomarker and therapeutic target. Developing direct RAD51 inhibitors is challenging, but indirect inhibition strategies are being explored.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • RAD51 protein plays a key role in homologous recombination DNA repair.
  • RAD51 is a significant biomarker and therapeutic target in oncology.
  • Its predictive value is noted for platinum-based therapies and PARP inhibitors.

Purpose of the Study:

  • To review the development of RAD51 inhibitors.
  • To focus on novel molecules and clinical trials.
  • To explore the potential of indirect RAD51 inhibition.

Main Methods:

  • Review of in vitro and in vivo studies.
  • Analysis of ongoing clinical trials.
  • Literature search on RAD51 inhibitor development.

Main Results:

  • RAD51 is a validated predictive marker for certain cancer therapies.
  • Development of direct RAD51 inhibitors faces significant challenges.
  • Pharmacological indirect RAD51 inhibition shows clinical potential.

Conclusions:

  • RAD51 remains a critical target in cancer therapy.
  • Direct inhibition of RAD51 is difficult.
  • Indirect inhibition strategies offer a promising therapeutic avenue.

Related Concept Videos

Homologous Recombination02:31

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
50.8K
Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.4K
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...
7.8K
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
387
Crossing Over01:30

Crossing Over

Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I,...
4.6K
Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
6.1K