Identification of Small-Molecule Modulators of FOXO3 Through Virtual Screening
Filoemena Nascimento1, Gonçalo Braga1, Paulo J Martel2
1CINTESIS@RISE/Faculty of Sciences and Technology, University of the Algarve, Faro, Portugal.
Abstract:
FOXO3 is integral in regulating numerous genes involved in critical cellular processes such as apoptosis, oxidative damage protection, cell growth, and cancer. Consequently, modulating FOXO3 activity holds significant potential for applications in cancer treatment and cellular aging. A promising approach involves identifying small-molecule modulators that can either enhance or inhibit FOXO3's DNA-binding capability. This paper details a virtual screening protocol aimed at discovering such modulators. Utilizing the crystal structures of FOXO3 in both its free and DNA-bound forms, we pinpoint potential binding sites that may disrupt or facilitate the DNA-FOXO3 interaction. A comprehensive virtual screening of a small-molecule compound library is conducted using AutoDock Vina software. The highest-ranking hits for each site are carefully selected and analyzed to determine their binding modes. This protocol paves the way for identifying novel modulators of FOXO3, offering therapeutic avenues in cancer and aging-related research.
Insights
Researchers developed a virtual screening method to find small molecules that can control FOXO3 protein activity. This discovery could lead to new treatments for cancer and aging.
Area of Science:
- Molecular Biology
- Biochemistry
- Pharmacology
Background:
- The FOXO3 protein regulates key cellular functions including apoptosis, oxidative stress response, and cell growth, making it a target for cancer and aging research.
- Modulating FOXO3 activity, particularly its DNA-binding capacity, is a promising therapeutic strategy.
- Identifying small-molecule modulators is crucial for developing FOXO3-targeted therapies.
Purpose of the Study:
- To establish a virtual screening protocol for identifying small molecules that modulate FOXO3 DNA-binding.
- To pinpoint potential binding sites on FOXO3 that influence its interaction with DNA.
Main Methods:
- Utilized crystal structures of FOXO3 in free and DNA-bound states.
- Performed virtual screening of a small-molecule library using AutoDock Vina.
- Analyzed top-ranking compounds to determine binding modes and potential interactions.
Main Results:
- Identified potential binding sites on FOXO3 capable of modulating DNA interaction.
- Successfully screened a compound library to find candidate FOXO3 modulators.
- Detailed analysis of binding modes for selected high-ranking compounds.
Conclusions:
- The developed virtual screening protocol is effective for discovering novel FOXO3 modulators.
- This approach offers a pathway for developing new therapeutic agents for cancer and aging.
- Further experimental validation of identified compounds is warranted.
