De novo design of self-assembling peptides with antimicrobial activity guided by deep learning Peptide hydrogels are advanced biomaterials that mimic the natural extracellular matrix (ECM) due to their three-dimensional fibrous networks. These self-assembling structures, formed from short or ultrashort peptide sequences, are gaining significant attention for their diverse biomedical applications.Peptide Serums vs Hyaluronic Acid: Which Works Better? Their ability to respond to various stimuli and their excellent physicochemical and mechanical characteristics, including biodegradability and swelling, make them promising scaffolds for tissue engineering, drug delivery, and regenerative medicine.
At the core of peptide hydrogels lies the principle of self-assembly. Short peptide sequences, when introduced into a suitable environment, spontaneously organize through non-covalent interactions such as hydrogen bonding and π-π stacking. This process leads to the formation of ordered nanostructures, typically nanofibers, which then entangle and crosslink to create a stable, three-dimensional hydrogel network. This intrinsic ability to self-assemble allows for the creation of hydrogels with tunable properties, often referred to as supramolecular peptide hydrogels, which are particularly promising due to their modularity and favorable biological characteristics. The fabrication methods for these hydrogels often involve physical, chemical, or biological stimuli to induce this self-assembly processThe versatility of peptide hydrogels: From self‐assembly to ....
The versatility of peptide hydrogels stems from a combination of desirable properties:
* Biocompatibility and Biodegradability: Composed of amino acids, the building blocks of proteins, peptide hydrogels are generally highly biocompatible and can be designed to be biodegradable, minimizing adverse immune responses and facilitating tissue integration.
* Mimicry of the Extracellular Matrix (ECM): Their fibrous, porous structure closely resembles the native ECM, providing a supportive microenvironment for cell growth, proliferation, and differentiation. This makes them ideal for 3D cell cultures and tissue engineering applicationsEmerging self-assembled peptide hydrogels for enhanced ....
* Stimuli-Responsiveness: Many peptide hydrogels are stimuli-responsive, meaning their properties can change in response to external triggers such as temperature, pH, or specific biomolecules. This characteristic is crucial for controlled drug release and targeted therapies.
* Tunable Mechanical Properties: The mechanical strength and rheological properties of peptide hydrogels can be precisely engineered by altering the peptide sequence, concentration, or assembly conditions. This allows for tailoring the material to specific application requirements.
* High Water Content: Like natural hydrogels, peptide hydrogels can absorb and retain large amounts of water, contributing to their soft, tissue-like consistency.
The unique attributes of peptide hydrogels have opened doors to a wide array of biomedical applications:
* Tissue Engineering and Regenerative Medicine: Peptide hydrogels serve as advanced scaffolds for regenerating damaged tissues, including cartilage, bone, and skinSelf-assembled peptide hydrogels. They can deliver cells, growth factors, and other therapeutic agents to promote tissue repair and reconstruction. For instance, PEG-peptide hydrogels have been explored for wound healing due to their biodegradability and direct application potential.
* Drug Delivery: Their porous structure and stimuli-responsive nature make peptide hydrogels excellent candidates for controlled and targeted drug delivery systems. They can encapsulate therapeutic molecules and release them gradually over time or in response to specific physiological cues, enhancing treatment efficacy and reducing side effects.Rational design and application of responsive α-helical ...
* Cancer Therapy: Peptide-based hydrogels are emerging as immunomodulating materials for cancer therapies. They can be designed to deliver immunotherapeutic agents or to create a microenvironment that enhances anti-tumor immune responses作者：SQ Liu·2009·被引用次数：187—ThePEG-peptide hydrogelsmay provide a better approach to cell delivery because they are biodegradable, and can be applied directly to the wounds without the ....
* 3D Cell Culture: They provide a more physiologically relevant environment for cell culture compared to traditional 2D methods, allowing for better understanding of cellular behavior and disease modeling.
* Biomaterial Design: Beyond these specific applications, peptide hydrogels are also being investigated for their potential in creating novel biomolecular constructs and for immobilizing enzymes, as seen with low-molecular weight peptide-based hydrogelatorsA review on recent advances in polymer and peptide ....
While the potential of peptide hydrogels is immense, ongoing research aims to further refine their design and expand their applicationsSelf-assembling peptide hydrogels: design, mechanisms, .... Challenges include optimizing long-term stability in vivo, ensuring precise control over degradation rates, and scaling up production for clinical translation. However, advancements in computational design, including machine learning approaches for predicting and discovering self-assembling peptides with specific functionalities, are accelerating the development of next-generation peptide hydrogels作者：SQ Liu·2009·被引用次数：187—ThePEG-peptide hydrogelsmay provide a better approach to cell delivery because they are biodegradable, and can be applied directly to the wounds without the .... The continued exploration of their physicochemical and mechanical characteristics, alongside innovative fabrication methods, promises to unlock even more groundbreaking uses for these versatile biomaterials.
Join the newsletter to receive news, updates, new products and freebies in your inbox.