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Zhang, W.* ; Zhang, S.* ; Knoedler, S.* ; Han, W.* ; Zha, K.* ; Li, H.* ; Christine Panayi, A.* ; Alfertshofer, M.* ; Kim, B.S.* ; Hu, W.* ; Zhao, Y.* ; Feng, Q.* ; Rinkevich, Y. ; Mi, B.* ; Liu, G.*

Hybrid biomaterial hydrogel loading iRGD&PS double modified lipid nanoparticles ameliorates diabetic wound healing through promoting efferocytosis and glycolysis-related macrophage reprogramming.

Chem. Eng. J. 497:154800 (2024)

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	Open Access Gold (Paid Option)

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Efferocytosis is a critical process whereby macrophages residing in the wound area play a key role in the efficient clearing and degradation of apoptotic neutrophils. This process is followed by a phenotypic transition toward an anti-inflammatory state, essential for inflammation resolution and tissue repair. The cystine/glutamate antiporter SLC7A11 has recently been identified as an inhibitor of efferocytosis, and its blockade has been found to enhance wound healing. In this study, we demonstrated that tiliroside, a plant-derived glycoside containing flavones, binds directly to SLC7A11 and pyruvate kinase isozyme M2 (PKM2). This was established by molecular docking predictions and activity-based protein profiling (ABPP). Cytological experiments revealed that tiliroside promoted the process of efferocytosis and led to glycolysis-related macrophage reprogramming. To facilitate targeted drug delivery to macrophages at diabetic wound sites, we designed a novel hybrid biomaterial. This hybrid biomaterial, prepared as Gel@Til iRGD&PS@PLGA NPs is manufactured by loading tiliroside (Til)-conjugated iRGD&PS double modified lipid nanoparticles (iRGD&PS@PLGA NPs) into a pH-responsive hydrogel matrix. The administration of Gel@Til iRGD&PS@PLGA NPs in diabetic cutaneous wound models has been shown to significantly promote tissue regeneration through the promotion of efferocytosis and glycolysis-related macrophage reprogramming. Therefore, this study introduces a novel approach to diabetic wound management by leveraging the promotion of efferocytosis.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Biomaterials ; Diabetic Wound Healing ; Efferocytosis ; Hydrogels ; Macrophage Reprogramming ; Wound Healing; Foot Ulcers; Tiliroside; Inflammation; Proliferation; Hif-1-alpha; Resolution; Netosis

ISSN (print) / ISBN 1385-8947

Journal Chemical Engineering Journal

Quellenangaben Volume: 497, Article Number: 154800

Publisher Elsevier

Publishing Place Po Box 564, 1001 Lausanne, Switzerland

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Regenerative Biology (IRBM)

Grants Hubei Province Unveiling Science and Technology Projects
Wuhan Science and Tech-nology Bureau
National Science Foundation of China