Tendinopathy is a common disorder that causes local dysfunction and reduces quality of life.Recent research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of ...Tendinopathy is a common disorder that causes local dysfunction and reduces quality of life.Recent research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of tendinopathy.Herein,injectable methacrylate gelatin(GelMA)microspheres(GM)were fabricated and loaded with heparin-dopamine conjugate(HDC)and hepatocyte growth factor(HGF).GM@HDC@HGF were designed to balance the inflammatory microenvironment by inhibiting oxidative stress and inflammation,thereby regulating extracellular matrix(ECM)metabolism and halting tendon degeneration.Combining growth factors with heparin was expected to improve the encaption,the catechol groups on dopamine have adhesion and antioxidant properties,allowing potential attachment at the injured site,and better function synergized with HGF.GM@HDC@HGF injected in situ in rat Achilles tendinopathy(AT)models significantly downregulated oxidative stress and inflammation,and ameliorated ECM degradation.In conclusion,the multifunctional platform developed presents a promising alternative for the treatment of tendinopathy.展开更多
基金the Program of Jiangsu science and technology Department(BK20211083,BE2022737)Jiangsu Graduate Student Cultivation Innovative Engineering Graduate Research and Practice Innovation Program(KYCX21_1578)the Program of Suzhou Health Commission(GSWS2020078,SZXK202111).
文摘Tendinopathy is a common disorder that causes local dysfunction and reduces quality of life.Recent research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of tendinopathy.Herein,injectable methacrylate gelatin(GelMA)microspheres(GM)were fabricated and loaded with heparin-dopamine conjugate(HDC)and hepatocyte growth factor(HGF).GM@HDC@HGF were designed to balance the inflammatory microenvironment by inhibiting oxidative stress and inflammation,thereby regulating extracellular matrix(ECM)metabolism and halting tendon degeneration.Combining growth factors with heparin was expected to improve the encaption,the catechol groups on dopamine have adhesion and antioxidant properties,allowing potential attachment at the injured site,and better function synergized with HGF.GM@HDC@HGF injected in situ in rat Achilles tendinopathy(AT)models significantly downregulated oxidative stress and inflammation,and ameliorated ECM degradation.In conclusion,the multifunctional platform developed presents a promising alternative for the treatment of tendinopathy.
