Review

Bioresponsive hydrogel scaffolding systems for 3D constructions in tissue engineering and regenerative medicine

Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, N1.3-B2-13, 637457, Singapore

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Dong-An Wang

* Author for correspondence

Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, N1.3-B2-13, 637457, Singapore.

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Email the corresponding author at dawang@ntu.edu.sg

Published Online:5 Apr 2013https://doi.org/10.2217/nnm.13.32

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Abstract

Among the diversity of scaffolding systems available, hydrogel remains a popular choice for tissue engineering applications. The current state-of-the-art bioresponsive hydrogels demand intricate designs in pursuit of acquiring desired timely responses, such as controlled release of biological factors, changes in mechanical properties and scaffold degradation, at the same rate as the natural extracellular matrix. In this review, a variety of bioresponsive hydrogels are discussed; in particular, bioactive and biodegradable hydrogels that facilitate cellular development and tissue morphogenesis are highlighted. Bioactive hydrogels are designed to deliver biomolecules such as cell-adhesive moieties and instructive ligands at close proximity to the cell for better uptake or exposure. Biodegradable hydrogels provide transient scaffolding support for therapeutic cell settlement while gradually degrading in response to physical or enzymatic stimuli. In addition, biomechanical stimuli from hydrogels can induce mutual constructive responses on cells and, hence, will also be covered in this review.

Keywords:

Papers of special note have been highlighted as: ▪ of interest ▪▪ of considerable interest

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Financial & competing interests disclosure

The work was financially supported by Grant NMRC/EDG/1001/2010 and AcRF Tier 1 Grant 2012-T1-001-105, Singapore. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

No writing assistance was utilized in the production of this manuscript.

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