期刊
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
卷 33, 期 5, 页码 569-589出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09205063.2021.2002235
关键词
Decellularization; adipose tissue; hydrogel; VEGF; wound healing
资金
- National Natural Science Foundation of China [81772071, 81901965, 81530064, 30771149]
The VEGF hydrogel significantly accelerates wound healing and promotes collagen deposition and the formation of new blood vessels. It retains the biological activity of VEGF and has the potential to be an attractive biomaterial for clinical applications.
Decellularized adipose tissue (DAT) has been widely applied in soft tissue regeneration, however, DAT may play a promising role in accelerating wound healing because of suitable physical characteristics and biological properties. In this research, we fabricated the DAT hydrogel and the VEGF loaded heparinized-DAT hydrogel (VEGF hydrogel) and evaluated their efficiency in full-thickness skin wound model. We designed one method to encapsulate VEGF to hep-DAT hydrogel in order to control VEGF release rate. Result showed that the VEGF release could last up to 3 day, and 1 ml hep-DAT hydrogel (5 mg/ml) could bind up to (64.521 +/- 11.550) ng VEGF which was 4.2 times to that of DAT hydrogels. Moreover, the VEGF released in 3 days still preserved biological activities that the released VEGF could enhance tube formation of HUVECs in vitro. Otherwise, the VEGF hydrogel could significantly accelerate wound healing compared with DAT hydrogel and VEGF injection, collagen deposition and newly formed vessels in the VEGF hydrogel groups were also higher than those of other groups. We believed that the VEGF hydrogel could be one attractive biomaterial for potential clinical applications.
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