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Updated: Jun 5, 2026
10:34
Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
Nanomaterials can dynamically steer cell responses to biological ligands
Ram I Sharma1, Jean E Schwarzbauer, Prabhas V Moghe
1Department of Chemical & Biochemical Engineering, Rutgers University, 98 Brett Road, NJ 08854, USA.
Small (Weinheim an Der Bergstrasse, Germany)
|January 8, 2011
Summary
Researchers developed albumin-derived nanocarriers (ANCs) functionalized with fibronectin to enhance keratinocyte migration. Smaller ANCs (30-50 nm) promoted cell migration more effectively than larger ones, highlighting the role of nanocarrier size and dynamic internalization in cell motility.
Area of Science:
- Biomaterials Science
- Cell Biology
- Nanotechnology
Background:
- Traditional tissue regeneration uses extracellular matrix or growth factors.
- Cell behavior on biomaterials is crucial for regeneration.
- Novel strategies are needed to dynamically control cellular responses.
Purpose of the Study:
- To investigate the effect of albumin-derived nanocarriers (ANCs) functionalized with fibronectin on keratinocyte migration.
- To determine how ANC size and dynamic internalization influence cell motility.
- To explore the potential of nanoscale substratum features for steering cellular phenomena.
Main Methods:
- Functionalization of albumin-derived nanocarriers (ANCs) with fibronectin III9-10 matrix ligands.
- Investigation of primary human keratinocyte activation and migration on ANCs of varying sizes (30-100 nm).
- Assessment of cell migration using immobilized vs. dynamic nanocarrier internalization, and evaluation of endocytic pathways with inhibitors.
Main Results:
- Fibronectin-functionalized ANCs significantly enhanced keratinocyte migration compared to free ligands.
- Smaller ANCs (30 and 50 nm) promoted greater cell migration than larger ANCs (75 and 100 nm) at equivalent ligand concentrations.
- Dynamic nanocarrier internalization, particularly clathrin-mediated endocytosis, was essential for enhanced cell migration, with a monotonic relationship between nanocarrier uptake rate and cell migration rate.
Conclusions:
- Nanocarrier size and dynamic internalization critically regulate cell migration kinetics.
- Albumin-derived nanocarriers functionalized with biorelevant ligands can dynamically control cell migration.
- This approach offers a novel strategy for designing biointerfaces to modulate cell motility for tissue regeneration applications.
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