4.8 Article

De Novo Design of Functional Coassembling Organic-Inorganic Hydrogels for Hierarchical Mineralization and Neovascularization

Journal

ACS NANO
Volume 15, Issue 7, Pages 11202-11217

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c09814

Keywords

laponite; nanocomposite hydrogels; coassembly; supramolecular; biomineralization; peptide amphiphiles; multicomponent biomaterials

Funding

  1. ERC Starting Grant (STROFUNSCAFF)
  2. Medical Research Council (UK Regenerative Medicine Platform Acellular/Smart Materials-3D Architecture) [MR/R015651/1]
  3. AO Foundation [AOCMF-17-19M]
  4. Henry Royce Institute for Advanced Materials through Engineering and Physical Sciences Research Council (EPSRC) [EP/R00661X/1, EP/S019367/1, EP/P025021/1, EP/P025498/1]
  5. EPSRC [EP/L021978/2]
  6. DANSE project under NSF [DMR-0520547]
  7. EPSRC [EP/L021978/2] Funding Source: UKRI
  8. MRC [MR/R015651/1] Funding Source: UKRI

Ask authors/readers for more resources

Synthetic nanostructured materials incorporating both organic and inorganic components exhibit high structural integrity and various bioactivities, promoting bone cell proliferation and integration with tissues in vivo, including blood vessel infiltration, extracellular matrix stimulation, and extensive mineral deposition.
Synthetic nanostructured materials incorporating both organic and inorganic components offer a unique, powerful, and versatile class of materials for widespread applications due to the distinct, yet complementary, nature of the intrinsic properties of the different constituents. We report a supramolecular system based on synthetic nanoclay (Laponite, Lap) and peptide amphiphiles (PAs, PAH3) rationally designed to coassemble into nanostructured hydrogels with high structural integrity and a spectrum of bioactivities. Spectroscopic and scattering techniques and molecular dynamic simulation approaches were harnessed to confirm that PAH3 nanofibers electrostatically adsorbed and conformed to the surface of Lap nanodisks. Electron and atomic force microscopies also confirmed an increase in diameter and surface area of PAH3 nanofibers after coassembly with Lap. Dynamic oscillatory rheology revealed that the co-assembled PAH3-Lap hydrogels displayed high stiffness and robust self-healing behavior while gas adsorption analysis confirmed a hierarchical and heterogeneous porosity. Furthermore, this distinctive structure within the three-dimensional (3D) matrix provided spatial confinement for the nucleation and hierarchical organization of high-aspect ratio hydroxyapatite nanorods into well-defined spherical clusters within the 3D matrix. Applicability of the organic-inorganic PAH3-Lap hydrogels was assessed in vitro using human bone marrow-derived stromal cells (hBMSCs) and ex vivo using a chick chorioallantoic membrane (CAM) assay. The results demonstrated that the organic-inorganic PAH3-Lap hydrogels promote human skeletal cell proliferation and, upon mineralization, integrate with the CAM, are infiltrated by blood vessels, stimulate extracellular matrix production, and facilitate extensive mineral deposition relative to the controls.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available