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Published on: August 4, 2017
Growth factors and growth factor gene therapies for treating chronic wounds
James A Mullin1, Erfan Rahmani2, Kristi L Kiick2,3
1Department of Chemical and Biomolecular Engineering University of Delaware Newark Delaware USA.
Abstract:
Chronic wounds are an unmet clinical need affecting millions of patients globally, and current standards of care fail to consistently promote complete wound closure and prevent recurrence. Disruptions in growth factor signaling, a hallmark of chronic wounds, have led researchers to pursue growth factor therapies as potential supplements to standards of care. Initial studies delivering growth factors in protein form showed promise, with a few formulations reaching clinical trials and one obtaining clinical approval. However, protein-form growth factors are limited by instability and off-target effects. Gene therapy offers an alternative approach to deliver growth factors to the chronic wound environment, but safety concerns surrounding gene therapy as well as efficacy challenges in the gene delivery process have prevented clinical translation. Current growth factor delivery and gene therapy approaches have primarily used single growth factor formulations, but recent efforts have aimed to develop multi-growth factor approaches that are better suited to address growth factor insufficiencies in the chronic wound environment, and these strategies have demonstrated improved efficacy in preclinical studies. This review provides an overview of chronic wound healing, emphasizing the need and potential for growth factor therapies. It includes a summary of current standards of care, recent advances in growth factor, cell-based, and gene therapy approaches, and future perspectives for multi-growth factor therapeutics.
Insights
Chronic wounds require advanced therapies beyond current standards. Multi-growth factor treatments show promise for improved healing by addressing signaling disruptions.
Area of Science:
- Regenerative Medicine
- Wound Healing Biology
- Biotechnology
Background:
- Chronic wounds represent a significant global health challenge with inadequate current treatments.
- Dysregulated growth factor signaling is a key factor in non-healing chronic wounds.
- Existing therapies, including protein growth factors and gene therapy, face limitations in stability, efficacy, and safety.
Purpose of the Study:
- To review the current landscape of chronic wound healing.
- To explore the potential of growth factor therapies for chronic wounds.
- To discuss advancements in single and multi-growth factor approaches, including cell-based and gene therapy.
Main Methods:
- Literature review of chronic wound healing mechanisms.
- Analysis of current standards of care and their limitations.
- Examination of recent research in growth factor, cell-based, and gene therapy for wound healing.
Main Results:
- Current chronic wound treatments often fail to achieve complete closure or prevent recurrence.
- Protein-based growth factors have shown promise but suffer from instability and off-target effects.
- Gene therapy presents an alternative but faces safety and delivery efficacy challenges.
- Multi-growth factor strategies demonstrate enhanced efficacy in preclinical studies compared to single-factor approaches.
Conclusions:
- Growth factor therapies, particularly multi-growth factor approaches, hold significant potential for advancing chronic wound treatment.
- Addressing growth factor deficiencies is crucial for promoting effective wound healing.
- Future research should focus on optimizing delivery and safety of multi-growth factor therapeutics for clinical translation.
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