Nanofibrillar collagen scaffolds for lymphedema treatment: current applications and future directions

Abstract

Aim: Biosynthetic scaffolds represent cutting-edge therapeutic efforts for secondary lymphedema. In particular, nanofibrillar collagen scaffolds have shown efficacy in both preclinical and clinical contexts, and there has been growing interest in these scaffolds in recent years. This study systematically reviewed the current literature on nanofibrillar collagen scaffolds for lymphedema treatment to synthesize findings and highlight areas for further research.

Methods: This was a systematic scoping review of the literature on nanofibrillar collagen scaffolds for lymphedema treatment.

Results: Upon review of the literature, 32 relevant articles were identified, of which seven articles specifically investigating nanofibrillar collagen scaffolds were selected for inclusion. Of these articles, three investigated scaffold placement in small or large animal models, while four were clinical investigations ranging from case reports to retrospective cohort studies. Across all studies, scaffold implantation was associated with significant improvement in lymphedema symptoms compared to untreated controls, especially when used in combination with physiologic microsurgical procedures such as vascularized lymph node transfer. However, even when used alone or in combination with lymph node fragments, subcutaneous placement of these scaffolds improved lymphedema symptoms. Additionally, in a rodent model of lymphedema, scaffold placement at the time of lymph node harvest forestalled the development of lymphedema, highlighting the preventative capacity of these scaffolds as well.

Conclusion: Nanofibrillar collagen scaffolds have been demonstrated to effectively treat and/or prevent secondary lymphedema in both preclinical and clinical investigations. Ultimately, these scaffolds represent a promising intersection of tissue engineering and lymphedema therapy, and further clinical investigation is warranted.

Keywords

Biomaterials / lymphedema / biosynthetic scaffold / lymphangiogenesis / regenerative medicine / adipose-derived stem cells

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