Mechanically reinforced injectable bioactive nanocomposite hydrogels for in-situ bone regeneration
Mechanically reinforced injectable bioactive nanocomposite hydrogels for in-situ bone regeneration
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用于原位骨再生的机械增强可注射生物活性纳米复合水凝胶
DOI:
10.1016/j.cej.2021.132799
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发表时间:
2021-10
影响因子:
15.1
通讯作者:
Kaili Lin
中科院分区:
文献类型:
--
作者:
Xingge Yu;Xiuhui Wang;Dejian Li;Ruilong Sheng;Yifeng Qian;Rui Zhu;Xudong Wang;Kaili Lin
Gelatin-methacryloyl (GelMA) has received extensive attention in tissue engineering because of its low antigenicity, suitable biodegradability, and similarity to ECM. However, it is still a challenge to induce in-situ bone regeneration for bone defects due to the absence of osteogenic factors or other mineral ions. In this study, a novel injectable organic–inorganic nanocomposite GelMA hydrogel system doped Sr-substituted xonotlite (Sr-CSH) nanofibers was developed. The integration of Sr-CSH nanowires improved the mechanical property of GelMA hydrogels. In addition, GelMA/Sr-CSH hydrogels facilitated cell adhesion, proliferation, ALP activity and the expression of osteogenic genes (BSP, OPN and OCN) and angiogenesis genes (VEGF, ANG-1 and CD31) by activating the ERK/p38 signaling pathwayin vitro. Moreover,in vivoresults of in-situ bone regeneration in rat calvarial defects model demonstrated that the incorporation of Sr-CSH nanowires could apparently accelerate new bone formation of GelMA. Overall, the prepared injectable organic–inorganic nanocomposite of GelMA/Sr-CSH hydrogel system has great potential for in-situ bone regeneration of bone defect area.
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影响因子:
14
作者:
Nichol, Jason W.;Koshy, Sandeep T.;Bae, Hojae;Hwang, Chang M.;Yamanlar, Seda;Khademhosseini, Ali
通讯作者:
Khademhosseini, Ali
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Bian Liming
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14
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Ma, Peter X.
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14
作者:
Lin, Kaili;Xia, Lunguo;Chang, Jiang
通讯作者:
Chang, Jiang
影响因子:
17.1
作者:
Janet R. Xavier;T. Thakur;Prachi Desai;Manish K Jaiswal;Nicholas A. Sears;E. Cosgriff-Hernandez;R. Kaun
通讯作者:
Janet R. Xavier;T. Thakur;Prachi Desai;Manish K Jaiswal;Nicholas A. Sears;E. Cosgriff-Hernandez;R. Kaun