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Published on: February 9, 2024
ONC201 (Dordaviprone) Induces Integrated Stress Response and Death in Cervical Cancer Cells
Sneha O Pathak1, Sonal M Manohar1
1Department of Biological Sciences, Sunandan Divatia of School of Science, SVKM's NMIMS (Deemed-to-be) University, Vile Parle (West), Mumbai 400056, India.
Abstract:
Cervical cancer is a leading cause of death in women globally. Systemic chemotherapy offers only limited therapeutic benefit for advanced-stage disease due to toxicity and drug resistance. ONC201 (also known as TIC10 or dordaviprone) is a TRAIL (TNF-Related Apoptosis-Inducing Ligand) and cIpP (caseinolytic protease) agonist currently in Phase II clinical trials for different types of cancer. In the present study, we investigated the anticancer potential of ONC201 in HPV-positive cervical cancer cell lines. ONC201 exerted significant cytotoxicity and inhibited the clonogenic potential of cervical cancer cells. It induced integrated stress response along with S/G2-M arrest and apoptosis in both cell lines. Yet, surprisingly, well-known targets of ONC201 viz. TRAIL, DR5 (death receptor 5) and cIpP were found to be upregulated only in HeLa but not in SiHa cells in response to ONC201 treatment. In addition, expression of BNIP3 and Beclin-1 (both involved in regulation of autophagy) increased in response to certain doses of ONC201. Furthermore, ONC201 exhibited synergism in combination with standard drugs against cervical cancer cells. This study provides a proof of concept for the anticancer activity of versatile drug ONC201 against cervical cancer cells and also delineates its mechanism of action.
Insights
ONC201 demonstrates significant anticancer effects against cervical cancer cells by inducing apoptosis and cell cycle arrest. This drug shows promise as a novel therapeutic agent, even exhibiting synergistic effects with standard treatments.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Cervical cancer remains a significant global health challenge for women.
- Current systemic chemotherapy for advanced cervical cancer has limited efficacy due to toxicity and drug resistance.
- ONC201, a TRAIL and cIpP agonist, is under investigation for various cancers.
Purpose of the Study:
- To evaluate the anticancer potential of ONC201 in human papillomavirus (HPV)-positive cervical cancer cell lines.
- To elucidate the mechanism of action of ONC201 in cervical cancer.
- To assess the synergistic effects of ONC201 in combination with standard chemotherapeutic agents.
Main Methods:
- Investigated ONC201's cytotoxicity and clonogenic inhibition in cervical cancer cell lines (HeLa and SiHa).
- Assessed the induction of integrated stress response, cell cycle arrest (S/G2-M), and apoptosis.
- Monitored the expression of key targets including TRAIL, DR5, cIpP, BNIP3, and Beclin-1.
- Evaluated the synergistic effects of ONC201 in combination with standard drugs.
Main Results:
- ONC201 significantly reduced cervical cancer cell viability and clonogenic potential.
- The drug induced integrated stress response, S/G2-M cell cycle arrest, and apoptosis.
- TRAIL, DR5, and cIpP upregulation was observed in HeLa cells but not SiHa cells.
- Expression of autophagy-related proteins BNIP3 and Beclin-1 increased with ONC201 treatment.
- ONC201 demonstrated synergistic activity when combined with standard chemotherapeutic agents.
Conclusions:
- ONC201 exhibits potent anticancer activity against HPV-positive cervical cancer cells.
- The drug's mechanism involves inducing apoptosis and cell cycle arrest, with differential target modulation.
- ONC201 shows potential as a novel therapeutic agent for cervical cancer, particularly in combination therapy.
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