Title:KRAS Mutation Reduces Thymoquinone Anticancer Effects on Viability of Cells and
Apoptosis
Volume: 23
Issue: 15
Author(s): Vildan Betul Yenigun*, Hasan Acar, Ebru Kanimdan, Alper Yenigun, Abdurrahim Kocyigit and Tulin Cora
Affiliation:
- Department of Medical Biochemistry, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
- Health Services
Vocational School, Bezmialem Vakif University, Istanbul, Turkey
Keywords:
Cancer, KRAS mutation, phytotherapy, Nigella sativa, thymoquinone, chemotherapy.
Abstract:
Background: Cancer is a life-threatening condition with an economic burden on societies. Phytotherapy is
rapidly taking place in cancer research to increase the success of treatment and quality of life. Thymoquinone (TQ) is
the main active phenolic compound obtained from the essential oil of the Nigella sativa (black cumin) plant seed. For a
long time, black cumin has been used traditionally for the remedy of different diseases because of its various biological
effects. It has been shown that most of these effects of black cumin seeds are due to TQ. TQ became a popular research
topic for phytotherapy studies for its potential therapeutic applications, and more research is going on to fully understand
its mechanisms of action, safety, and efficacy in humans. KRAS is a gene that regulates cell division and growth.
Monoallelic variants in KRAS result in uncontrollable cell division, leading to cancer development. Studies have shown
that cancer cells with KRAS mutations are often resistant to certain types of chemotherapy and targeted therapies.
Objective: This study aimed to compare the effect of TQ on cancer cells with and without KRAS mutation to better
understand the reason why TQ may have different anticancer effects in the different types of cancer cells.
Methods: TQ was investigated for its cytotoxic and apoptotic effects in laryngeal cancer cells (HEp-2) without KRAS
mutation and compared to mutant KRAS-transfected larynx cancer cells and KRAS mutation-carrying lung cancer cells
(A549).
Results: We showed that TQ has more cytotoxic and apoptotic effects on laryngeal cancer cells without KRAS mutation
than in cells with mutation.
Conclusion: KRAS mutations decrease the effect of TQ on cell viability and apoptosis, and further studies are needed
to fully understand the relationship between KRAS mutations and thymoquinone effectiveness in cancer treatment.