Decoding Oncofusions: Unveiling Mechanisms, Clinical Impact, and Prospects for Personalized Cancer Therapies

Kari Salokas1, Giovanna Dashi1, Markku Varjosalo1

  • 1Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland.

Cancers
|July 29, 2023
PubMed

Insights

Cancer-associated gene fusions, or oncofusions, drive cancer by altering cell behavior. Further research into these genetic events promises new targeted therapies and advances in precision medicine.

Area of Science:

  • Genetics
  • Oncology
  • Molecular Biology

Background:

  • Cancer-associated gene fusions (oncofusions) are key drivers of oncogenesis across various cancer types.
  • These genetic events arise from chromosomal abnormalities, leading to altered gene products and profound changes in cellular behavior.
  • Advancements in sequencing technologies accelerate the discovery of novel oncofusions.

Purpose of the Study:

  • To review the role of oncofusions in cancer development and their impact on cellular signaling pathways.
  • To highlight the significance of large-scale initiatives like The Cancer Genome Atlas in characterizing oncofusions.
  • To discuss the therapeutic and diagnostic potential of oncofusions, including their role in immunotherapy and precision medicine.

Main Methods:

  • Review of existing literature and large-scale cancer genomics data (e.g., The Cancer Genome Atlas).
  • Analysis of oncofusion mechanisms involving chromosomal translocations, deletions, and inversions.
  • Examination of oncofusions' effects on cellular signaling pathways regulating proliferation, differentiation, and survival.

Main Results:

  • Oncofusions significantly alter cellular behavior by manipulating critical signaling pathways.
  • Large-scale genomic studies have mapped the landscape of oncofusions across diverse cancer types.
  • Oncofusions serve as potential neoantigens for immunotherapy and as diagnostic/therapeutic targets.

Conclusions:

  • Oncofusions are crucial in cancer pathogenesis and represent valuable targets for novel cancer therapies.
  • Despite challenges in functional validation, oncofusions hold significant potential for advancing precision medicine.
  • Further research is essential to fully exploit oncofusions for developing more effective and specific cancer treatments.

Related Concept Videos

Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
4.9K
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...
7.7K
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...
9.0K
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K
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...
3.3K