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Review
. 2023 Oct;101(10):1209-1228.
doi: 10.1007/s00109-023-02357-w. Epub 2023 Sep 11.

The mechanisms of exosomes in diabetic foot ulcers healing: a detailed review

Lei Yu  1 , Jianxin Qin  2 , Jiajun Xing  2 , Zihao Dai  1 , Tingting Zhang  1 , Feng Wang  3 , Jin Zhou  3 , Xiaobai Zhang  4 , Xia Chen  5 , Yunjuan Gu  6
Affiliations
Review

The mechanisms of exosomes in diabetic foot ulcers healing: a detailed review

Lei Yu et al. J Mol Med (Berl). 2023 Oct.

Abstract

As time goes by, the morbidity of diabetes mellitus continues to rise, and the economic burden of diabetic foot ulcers as a common and serious complication of diabetes is increasing. However, currently there is no unified clinical treatment strategy for this complication, and the therapeutic efficacy is unsatisfactory. Recent studies have revealed that biological effects of exosomes involved in multiple stages of the process of wound closure are similar to source cells. Compared with source cells, exosomes possess lowly immunogenicity, highly stability and easily stored, etc. Accumulating evidence confirmed that exosomes promote diabetic wound healing through various pathways such as promoting angiogenesis, collagen fiber deposition, and inhibiting inflammation. The superior therapeutic efficacy of exosomes in accelerating diabetic cutaneous wound healing has attracted an increasing attention. Notably, the molecular mechanisms of exosomes vary among different sources in the chronic wound closure of diabetes. This review focuses on the specific roles and mechanisms of different cell- or tissue-derived exosomes relevant to wound healing. Additionally, the paper provides an overview of the current pre-clinical and clinical applications of exosomes, illustrates their special advantages in wound repair. Furthermore, we discuss the potential obstacles and various solutions for future research on exosomes in the management of diabetic foot ulcer. The aim is to offer novel insights and approaches for the treatment of diabetic foot ulcer.

Keywords: Angiogenesis; Diabetic foot ulcers; Exosomes; Regenerative medicine; Wound healing.

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