PMID- 37601810 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230918 IS - 2041-7314 (Print) IS - 2041-7314 (Electronic) IS - 2041-7314 (Linking) VI - 14 DP - 2023 Jan-Dec TI - Promoting angiogenesis and diabetic wound healing through delivery of protein transduction domain-BMP2 formulated nanoparticles with hydrogel. PG - 20417314231190641 LID - 10.1177/20417314231190641 [doi] LID - 20417314231190641 AB - Decreased angiogenesis contributes to delayed wound healing in diabetic patients. Recombinant human bone morphogenetic protein-2 (rhBMP2) has also been demonstrated to promote angiogenesis. However, the short half-lives of soluble growth factors, including rhBMP2, limit their use in wound-healing applications. To address this limitation, we propose a novel delivery model using a protein transduction domain (PTD) formulated in a lipid nanoparticle (LNP). We aimed to determine whether a gelatin hydrogel dressing loaded with LNP-formulated PTD-BMP2 (LNP-PTD-BMP2) could enhance the angiogenic function of BMP2 and improve diabetic wound healing. In vitro, compared to the control and rhBMP2, LNP-PTD-BMP2 induced greater tube formation in human umbilical vein endothelial cells and increased the cell recruitment capacity of HaCaT cells. We inflicted large, full-thickness back skin wounds on streptozotocin-induced diabetic mice and applied gelatin hydrogel (GH) cross-linked by microbial transglutaminase containing rhBMP2, LNP-PTD-BMP2, or a control to these wounds. Wounds treated with LNP-PTD-BMP2-loaded GH exhibited enhanced wound closure, increased re-epithelialization rates, and higher collagen deposition than those with other treatments. Moreover, LNP-PTD-BMP2-loaded GH treatment resulted in more CD31- and alpha-SMA-positive cells, indicating greater neovascularization capacity than rhBMP2-loaded GH or GH treatments alone. Furthermore, in vivo near-infrared fluorescence revealed that LNP-PTD-BMP2 has a longer half-life than rhBMP2 and that BMP2 localizes around wounds. In conclusion, LNP-PTD-BMP2-loaded GH is a viable treatment option for diabetic wounds. CI - (c) The Author(s) 2023. FAU - Suh, Jae Wan AU - Suh JW AUID- ORCID: 0000-0001-9386-6484 AD - Department of Orthopaedic Surgery, Dankook University College of Medicine, Cheonan, South Korea. FAU - Lee, Kyoung-Mi AU - Lee KM AD - Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea. FAU - Ko, Eun Ae AU - Ko EA AD - Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea. FAU - Yoon, Dong Suk AU - Yoon DS AD - Department of Biomedical Science, Hwasung Medi-Science University, Hwaseong-Si, Gyeonggi-Do, South Korea. FAU - Park, Kwang Hwan AU - Park KH AUID- ORCID: 0000-0002-2110-0559 AD - Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea. FAU - Kim, Hyun Sil AU - Kim HS AD - Department of Oral Pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea. FAU - Yook, Jong In AU - Yook JI AD - Department of Oral Pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea. FAU - Kim, Nam Hee AU - Kim NH AD - Department of Oral Pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, South Korea. FAU - Lee, Jin Woo AU - Lee JW AD - Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea. AD - Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea. LA - eng PT - Journal Article DEP - 20230816 PL - England TA - J Tissue Eng JT - Journal of tissue engineering JID - 101550131 PMC - PMC10434183 OTO - NOTNLM OT - Diabetic wound healing OT - angiogenesis OT - bone morphogenetic protein-2 OT - lipid nanoparticle OT - protein transduction domain COIS- The author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: J.I.Y. is an inventor of the patent related to this work filed by MET Life Sciences Co., Ltd. (Korean Patent Number: 10-2227966, PCT Application Number: PCT/KR2020/007011). N.H.K., H.S.K., and J.I.Y. are the founders of MET Life Sciences Co., Ltd. and shareholders. All other authors declare that they have no competing interests. EDAT- 2023/08/21 06:42 MHDA- 2023/08/21 06:43 PMCR- 2023/08/16 CRDT- 2023/08/21 05:06 PHST- 2023/04/25 00:00 [received] PHST- 2023/07/12 00:00 [accepted] PHST- 2023/08/21 06:42 [pubmed] PHST- 2023/08/21 06:43 [medline] PHST- 2023/08/21 05:06 [entrez] PHST- 2023/08/16 00:00 [pmc-release] AID - 10.1177_20417314231190641 [pii] AID - 10.1177/20417314231190641 [doi] PST - epublish SO - J Tissue Eng. 2023 Aug 16;14:20417314231190641. doi: 10.1177/20417314231190641. eCollection 2023 Jan-Dec.