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Abstract <p>Gradient hydrogels represent a unique class of biomaterials capable of mimicking the spatial heterogeneity of native tissues and providing targeted effects on cells through mechanical, chemical, and biophysical gradients. In recent years, numerous fabrication strategies have been developed to generate gradient hydrogels, including layer-by-layer formation, photopolymerization, microfluidic techniques, and 3D/4D printing. This review summarizes current methodologies for the characterization of gradient hydrogels and highlights their emerging biomedical applications, such as controlled drug delivery, tissue engineering, regenerative medicine, organ-on-chip systems, and soft bioelectronic devices. Furthermore, the review discusses critical challenges related to the protocol standardization, manufacturing scalability, integration with additive manufacturing technologies, and potential regulatory barriers.</p>

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Gradient Hydrogels: Fabrication Strategies and Biomedical Applications

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • Nikita G. Yabbarov,
  • Ivan V. Romashkin,
  • Vasilina A. Zakharova,
  • Darya N. Zinovieva,
  • Mariia R. Mollaeva,
  • Maria B. Sokol,
  • Margarita V. Chirkina,
  • Ivan A. Gulyaev,
  • Maksim A. Klimenko,
  • Elena D. Nikolskaya

摘要

Abstract

Gradient hydrogels represent a unique class of biomaterials capable of mimicking the spatial heterogeneity of native tissues and providing targeted effects on cells through mechanical, chemical, and biophysical gradients. In recent years, numerous fabrication strategies have been developed to generate gradient hydrogels, including layer-by-layer formation, photopolymerization, microfluidic techniques, and 3D/4D printing. This review summarizes current methodologies for the characterization of gradient hydrogels and highlights their emerging biomedical applications, such as controlled drug delivery, tissue engineering, regenerative medicine, organ-on-chip systems, and soft bioelectronic devices. Furthermore, the review discusses critical challenges related to the protocol standardization, manufacturing scalability, integration with additive manufacturing technologies, and potential regulatory barriers.