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The impact of cycleanine in cancer research: a computational study
Ogochukwu Ngozi Nwaefulu1, Nizar A Al-Shar'i2, Josephine Omonkhelin Owolabi3
1Pharmacotherapeutics Unit, Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Abstract:
Cancer is imposing a global health burden because of the steady increase in new cases. Moreover, current anticancer therapeutics are associated with many drawbacks, mainly the emergence of resistance and the severe adverse effects. Therefore, there is a continuous need for developing new anticancer agents with novel mechanisms of action and lower side effects. Natural products have been a rich source of anticancer medication. Cycleanine, a natural product, was reported to exert an antiproliferative effect on ovarian cancer cells by causing apoptosis through activation of caspases 3/7 and cleavage of poly (ADP-ribose) polymerase to form poly (ADP-ribose) polymerase-1 (PARP1). It is well-established that PARP1 is associated with carcinogenesis, and different PARP1 inhibitors are approved as anticancer drugs. In this study, the cytotoxic activity of cycleanine was computationally investigated to determine whether it is a PARP1 inhibitor or a caspase activator. Molecular docking and molecular dynamics (MD) simulations were utilized for this purpose. The results showed that cycleanine has a good binding affinity to PARP1; moreover, MD simulation showed that it forms a stable complex with the enzyme. Consequently, the results showed that cycleanine is a potential inhibitor of the PARP1 enzyme.
Insights
Cycleanine, a natural product, may inhibit the poly (ADP-ribose) polymerase 1 (PARP1) enzyme, a key factor in cancer development. This study computationally suggests cycleanine as a potential new anticancer agent by exploring its interaction with PARP1.
Area of Science:
- Pharmacology
- Computational Chemistry
- Oncology
Background:
- Cancer presents a significant global health challenge, with existing treatments facing limitations like resistance and severe side effects.
- Natural products offer a promising avenue for discovering novel anticancer agents with improved efficacy and safety profiles.
- Poly (ADP-ribose) polymerase 1 (PARP1) is implicated in carcinogenesis, and its inhibitors are established anticancer drugs.
Purpose of the Study:
- To computationally investigate the cytotoxic activity of the natural product cycleanine.
- To determine if cycleanine acts as a PARP1 inhibitor or a caspase activator.
- To explore the potential of cycleanine as a novel anticancer therapeutic.
Main Methods:
- Utilized molecular docking simulations to assess the binding affinity of cycleanine to PARP1.
- Employed molecular dynamics (MD) simulations to analyze the stability of the cycleanine-PARP1 complex.
- Evaluated the cytotoxic potential of cycleanine against cancer cells.
Main Results:
- Cycleanine demonstrated significant binding affinity to the PARP1 enzyme.
- Molecular dynamics simulations confirmed the formation of a stable complex between cycleanine and PARP1.
- The findings suggest cycleanine's potential as a PARP1 inhibitor.
Conclusions:
- Cycleanine exhibits potential as a PARP1 inhibitor, warranting further investigation for anticancer applications.
- Computational methods provide valuable insights into the mechanism of action for natural product-derived drug candidates.
- Cycleanine represents a promising lead compound for the development of new anticancer therapies targeting PARP1.
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