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Updated: Jun 28, 2026

Murine Model for Non-invasive Imaging to Detect and Monitor Ovarian Cancer Recurrence
Published on: November 2, 2014
Nelfinavir induces TRAIL receptor upregulation in ovarian cancer cells
Ansgar Brüning1, Marianne Vogel, Petra Burger
1University Hospital Munich, Department of Obstetrics/Gynecology, Maistrasse 11, 80337 Munich, Germany. ansgar.bruening@med.uni-muenchen.de
Abstract:
HIV protease inhibitors are currently being discussed to be useful as new and alternative anti-cancer agents, especially as second line treatments for chemo-resistant human cancer types. Among three clinically applied HIV protease inhibitors tested, we found a high efficacy of nelfinavir on ovarian cancer cells, accompanied by apoptosis (annexin binding) and necrosis (propidium iodide permeability). In vitro, at concentrations used to induce cell death in ovarian cancer cells, nelfinavir had no effect on the cellular viability of fibroblasts or peripheral blood mononuclear leukocytes. Nelfinavir sensitized ovarian cancer cells to treatment with an apoptosis-inducing TRAIL receptor antibody due to upregulation of the TRAIL receptor DR5 as shown by RT-PCR and FACScan analysis. We conclude that nelfinavir, an already approved drug, is a highly efficient agent against ovarian cancer cells and could sensitize ovarian cancer cells to TRAIL treatment, either therapeutically applied or endogenously produced by cells of the immune system.
Insights
Nelfinavir, an HIV protease inhibitor, effectively kills ovarian cancer cells via apoptosis and necrosis. It also sensitizes these cells to TRAIL therapy by upregulating DR5, offering a new anti-cancer strategy.
Area of Science:
- Oncology
- Virology
- Pharmacology
Background:
- HIV protease inhibitors are explored as novel anti-cancer agents, particularly for chemo-resistant cancers.
- Nelfinavir is a clinically used HIV protease inhibitor with potential anti-cancer properties.
Purpose of the Study:
- To evaluate the efficacy of nelfinavir against ovarian cancer cells.
- To investigate nelfinavir's effect on cancer cell death pathways and its potential to sensitize cells to TRAIL therapy.
Main Methods:
- In vitro testing of nelfinavir on ovarian cancer cells, fibroblasts, and peripheral blood mononuclear leukocytes.
- Analysis of apoptosis and necrosis induction.
- Assessment of TRAIL receptor DR5 expression via RT-PCR and FACScan.
Main Results:
- Nelfinavir demonstrated high efficacy against ovarian cancer cells, inducing apoptosis and necrosis.
- Nelfinavir did not affect the viability of normal cells (fibroblasts, leukocytes) at effective concentrations.
- Nelfinavir sensitized ovarian cancer cells to TRAIL receptor antibody treatment by upregulating DR5.
Conclusions:
- Nelfinavir is a potent agent against ovarian cancer cells.
- Nelfinavir can enhance the effectiveness of TRAIL-based therapies for ovarian cancer.
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