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Osteoarthritis In Vitro Models: Applications and Implications in Development of Intra-Articular Drug Delivery Systems
Carlota Salgado1,2, Olivier Jordan1,2, Eric Allémann1,2
1School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland.
Abstract:
Osteoarthritis (OA) is a complex multi-target disease with an unmet medical need for the development of therapies that slow and potentially revert disease progression. Intra-articular (IA) delivery has seen a surge in osteoarthritis research in recent years. As local administration of molecules, this represents a way to circumvent systemic drug delivery struggles. When developing intra-articular formulations, the main goals are a sustained and controlled release of therapeutic drug doses, taking into account carrier choice, drug molecule, and articular joint tissue target. Therefore, the selection of models is critical when developing local administration formulation in terms of accurate outcome assessment, target and off-target effects and relevant translation to in vivo. The current review highlights the applications of OA in vitro models in the development of IA formulation by means of exploring their advantages and disadvantages. In vitro models are essential in studies of OA molecular pathways, understanding drug and target interactions, assessing cytotoxicity of carriers and drug molecules, and predicting in vivo behaviors. However, further understanding of molecular and tissue-specific intricacies of cellular models for 2D and 3D needs improvement to accurately portray in vivo conditions.
Insights
This review explores in vitro models for developing intra-articular (IA) formulations for osteoarthritis (OA). These models aid in assessing drug efficacy and safety, but require further refinement for accurate in vivo prediction.
Area of Science:
- Biomedical Engineering
- Pharmacology
- Regenerative Medicine
Background:
- Osteoarthritis (OA) is a complex disease with limited therapeutic options.
- Intra-articular (IA) drug delivery is a promising strategy to overcome systemic limitations.
- Developing effective IA formulations requires careful consideration of drug release, carriers, and target tissues.
Purpose of the Study:
- To review the application of in vitro models in developing IA formulations for OA.
- To explore the advantages and disadvantages of various in vitro models.
- To highlight the role of in vitro models in predicting in vivo outcomes for IA therapies.
Main Methods:
- Literature review of in vitro models used in OA research.
- Analysis of model suitability for assessing drug-carrier interactions and cytotoxicity.
- Evaluation of model relevance for predicting in vivo efficacy and off-target effects.
Main Results:
- In vitro models are crucial for studying OA pathways and drug-target interactions.
- These models assist in evaluating carrier cytotoxicity and predicting in vivo performance.
- Current 2D and 3D cellular models need enhancement to fully represent in vivo conditions.
Conclusions:
- In vitro models are invaluable tools in the development of IA formulations for OA.
- Further improvements in cellular model complexity are needed for better in vivo correlation.
- Optimized in vitro models will accelerate the development of effective OA treatments.
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