

FOLLOWUS
a.MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China
b.Hangzhou Matrix Medical Technology Co., Ltd., Hangzhou 311100, China
c.Zhejiang Key Laboratory of Cardiovascular Intervention and Precision Medicine; Engineering Research Center for Cardiovascular Innovative Devices of Zhejiang Province; Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
d.State Key Laboratory of Transvascular Implantation Devices, the Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou 310009, China
renkf@zju.edu.cn (K.F.R.)
yx_wang@zju.edu.cn (Y.X.W.)
Received:14 April 2026,
Accepted:15 May 2026,
Online First:07 August 2026,
Published:2026-06
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Han, X. Y.; Lu, W. Q.; Ye, C. Q.; Tang, D. Q.; Wang, J. R.; Hu, M.; Ji, P. H.; Ren, K. F.; Wang, Y. X.; Ji, J. Polydopamine-modified collagen sponge for improved anti-inflammatory and tissue repair. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3747-x
Xiao-Yun Han, Wei-Qi Lu, Cheng-Qiang Ye, et al. Polydopamine-modified Collagen Sponge for Improved Anti-inflammatory and Tissue Repair[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11.
Han, X. Y.; Lu, W. Q.; Ye, C. Q.; Tang, D. Q.; Wang, J. R.; Hu, M.; Ji, P. H.; Ren, K. F.; Wang, Y. X.; Ji, J. Polydopamine-modified collagen sponge for improved anti-inflammatory and tissue repair. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3747-x DOI:
Xiao-Yun Han, Wei-Qi Lu, Cheng-Qiang Ye, et al. Polydopamine-modified Collagen Sponge for Improved Anti-inflammatory and Tissue Repair[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11. DOI: 10.1007/s10118-026-3747-x.
Vascular closure devices (VCDs) play a critical role in preventing bleeding and hematoma formation after percutaneous interventions. Despite effective mechanical hemostasis
the current collagen-based VCDs lack anti-inflammatory and regenerative capabilities. Herein
we report the development of a polydopamine (PDA)-modified collagen sponge (Col@PDA) to enhance the anti-inflammatory and pro-regenerative potential of collagen-based materials. PDA modification not only preserved the sponges’ inherent porosity and swelling behavior but also endowed them with immunomodulatory functions.
In vitro
the modified sponges exhibited superior anti-inflammatory and antioxidant activities in RAW 264.7 macrophages and L929 fibroblasts. In a rat subcutaneous implantation model
Col@PDA attenuated local inflammation
promoted dermal regeneration
and enhanced collagen deposition and angiogenic factor expression. Collectively
PDA modification enables collagen sponges to actively modulate the healing microenvironment
resulting in faster tissue repair than unmodified collagen sponges.
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