Peptide-Based Hydrogels: Template Materials for Tissue Engineering

Tissue and organ regeneration are challenging issues, yet they represent the frontier of current research in the biomedical field. Currently, a major problem is the lack of ideal scaffold materials’ definition. As well known, peptide hydrogels have attracted increasing attention in recent years thanks to significant properties such as biocompatibility, biodegradability, good mechanical stabil-ity, and tissue-like elasticity. Such properties make them excellent candidates for 3D scaffold mate-rials. In this review, the first aim is to describe the main features of a peptide hydrogel in order to be considered as a 3D scaffold, focusing in particular on mechanical properties, as well as on bio-degradability and bioactivity. Then, some recent applications of peptide hydrogels in tissue engi-neering, including soft and hard tissues, will be discussed to analyze the most relevant research trends in this field.