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Title: Mimicking the Bioactivity of Fibroblast Growth Factor-2 Using Supramolecular Nanoribbons

Journal Article · · ACS Biomaterials Science & Engineering
 [1];  [1];  [1];  [2]; ORCiD logo [3]
  1. Northwestern Univ., Chicago, IL (United States)
  2. Northwestern Univ., Evanston, IL (United States)
  3. Northwestern Univ., Chicago, IL (United States); Northwestern Univ., Evanston, IL (United States)

Fibroblast growth factor (FGF-2) is a multifunctional growth factor that has pleiotropic effects in different tissues and organs. In particular, FGF-2 has a special role in angiogenesis, an important process in development, wound healing, cell survival, and differentiation. Therefore, incorporating biological agents like FGF-2 within therapeutic biomaterials is a potential strategy to create angiogenic bioactivity for the repair of damaged tissue caused by trauma or complications that arise from age and/or disease. However, the use of growth factors as therapeutic agents can be costly and does not always bring about efficient tissue repair due to rapid clearance from the targeted site. An alternative would be a stable supramolecular nanostructure with the capacity to activate the FGF-2 receptor that can also assemble into a scaffold deliverable to tissue. We report here on peptide amphiphiles that incorporate a peptide known to activate the FGF-2 receptor and peptide domains that drive its self-assembly into supramolecular nanoribbons. These FGF2-PA nanoribbons displayed the ability to increase the proliferation and migration of the human umbilical vein endothelial cells (HUVECs) in vitro to the same extent as the native FGF-2 protein at certain concentrations. We confirmed that this activity was specific to the FGFR1 signaling pathway by tracking the phosphorylation of downstream signaling effectors such ERK1/2 and pH3. These results indicated the specificity of FGF2-PA nanoribbons in activating the FGF-2 signaling pathway and its potential application as a supramolecular scaffold that can be used in vivo as an alternative to the encapsulation and delivery of the native FGF-2 protein.

Research Organization:
Northwestern Univ., Evanston, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Bio-Inspired Energy Science (CBES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-00ER45810
OSTI ID:
1821894
Alternate ID(s):
OSTI ID: 1846790
Journal Information:
ACS Biomaterials Science & Engineering, Vol. 3, Issue 9; ISSN 2373-9878
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Dynamic and Responsive Growth Factor Delivery from Electrospun and Hydrogel Tissue Engineering Materials journal November 2017
Supramolecular scaffolds enabling the controlled assembly of functional molecular units journal January 2018
The design and biomedical applications of self-assembled two-dimensional organic biomaterials journal January 2019
Minimalistic supramolecular proteoglycan mimics by co-assembly of aromatic peptide and carbohydrate amphiphiles journal January 2019
Synergistic effects of dual-presenting VEGF- and BDNF-mimetic peptide epitopes from self-assembling peptide hydrogels on peripheral nerve regeneration journal January 2019
Peptide-Based Functional Biomaterials for Soft-Tissue Repair journal August 2019