Breast and Ovarian Cancer may Have Similar Origins

by Julia Samuel on  May 24, 2016 at 6:17 PM Cancer News
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Breast cancer and ovarian cancer have similar origins and may eventually lead to more effective therapies for both, finds a new study published in the International Journal of Molecular Sciences.
Breast and Ovarian Cancer may Have Similar Origins
Breast and Ovarian Cancer may Have Similar Origins

Worldwide, breast cancer is the most common cause of cancer death in women and close to it is ovarian cancer, the fifth leading cause of cancer death among women. These facts reflect the continued need for further understanding and innovation in cancer treatment.

"Though breast and ovarian cancer are distinctly clinically different, our analysis uncovered many overlaps, particularly with respect to genetic and epigenetic alterations," explained corresponding author Sibaji Sarkar, PhD, instructor of medicine at Boston University School of Medicine (BUSM). (Epigenetics is when genetically identical cells express their genes differently, causing different outcomes.)

BUSM researchers compared genetic, micro-environmental, stromal (connective tissue cells of any organ) and epigenetic changes common between breast and ovarian cancer cells, as well as the clinical relevance of these changes. They observed that selected genes including some oncogenes and tumor suppressor genes are similarly altered in these two types of cancers. The study also presents a new model that explains how growth promoting genes could be epigenetically turned on and growth inhibiting genes could be epigenetically turned off in cancer cell formation.

"Both breast and ovarian cancers may have a similar origin. These similarities suggest that better understanding of this process will generate more effective chemotherapeutics, as well as strategies to circumvent drug resistance and cancer relapse," added Sarkar.



Source: Eurekalert

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