摘要
Stem cell therapies have made great progress in the treatment of diabetic wounds during recent decades,while their short in vivo residence,alloimmune reactions,undesired behaviors,and dramatic losses of cell functions still hinder the translation of them into clinic.Here,inspired by the natural components of stem cell niches,we presented novel microfluidic hydrogel microcarriers with extracellular matrix(ECM)-like composition and adipose-derived stem cells(ADSCs)encapsulation for diabetic wound healing.As the hydrogel was synthesized by conjugating hyaluronic acid methacryloyl(HAMA)onto the Fibronectin(FN)molecule chain(FN-HAMA),the laden ADSCs in the microcarriers showed improved bioactivities and pro-regenerative capabilities.Based on these features,we have demonstrated that these ADSCs microcarriers exhibited significant promotion of neovascularization,follicular rejuvenation,and collagen deposition in a mouse diabetic wound model.These results indicated that the stem cell niche-inspired FN-HAMA microcarriers with ADSCs encapsulation have great clinical potential for diabetic wound treatment.
基金
supported by the National Key Research and Development Program of China(2020YFA0908200)
the National Natural Science Foundation of China(81974288,T2225003 and 52073060)
the Strategic Priority Research Program of the Chinese Academy of Science(XDA16021103)
the Guangdong Basic and Applied Basic Research Foundation(2021B1515120054)
the Shenzhen Fundamental Research Program(JCYJ20190813152616459 and JCYJ20210324133214038).
