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Engineering of cell membranes with a bisphosphonate-containing polymer using ATRP synthesis for bone targeting
- Source :
- Biomaterials. 35(35)
- Publication Year :
- 2014
-
Abstract
- The field of polymer-based membrane engineering has expanded since we first demonstrated the reaction of N-hydroxysuccinimide ester-terminated polymers with cells and tissues almost two decades ago. One remaining obstacle, especially for conjugation of polymers to cells, has been that exquisite control over polymer structure and functionality has not been used to influence the behavior of cells. Herein, we describe a multifunctional atom transfer radical polymerization initiator and its use to synthesize water-soluble polymers that are modified with bisphosphonate side chains and then covalently bound to the surface of live cells. The polymers contained between 1.7 and 3.1 bisphosphonates per chain and were shown to bind to hydroxyapatite crystals with kinetics similar to free bisphosphonate binding. We engineered the membranes of both HL-60 cells and mesenchymal stem cells in order to impart polymer-guided bone adhesion properties on the cells. Covalent coupling of the polymer to the non-adherent HL-60 cell line or mesenchymal stem cells was non-toxic by proliferation assays and enhanced the binding of these cells to bone.
- Subjects :
- Materials science
Polymers
Surface Properties
Biophysics
Succinimides
Bioengineering
HL-60 Cells
Bone and Bones
Polymerization
Biomaterials
Rats, Sprague-Dawley
Polymer chemistry
Side chain
Animals
Humans
Cell Proliferation
chemistry.chemical_classification
Diphosphonates
Tissue Engineering
Atom-transfer radical-polymerization
Mesenchymal stem cell
Cell Membrane
Cell Differentiation
Mesenchymal Stem Cells
Adhesion
Polymer
Hydrogen-Ion Concentration
Rats
Membrane
chemistry
Mechanics of Materials
Cell culture
Covalent bond
Ceramics and Composites
Subjects
Details
- ISSN :
- 18785905
- Volume :
- 35
- Issue :
- 35
- Database :
- OpenAIRE
- Journal :
- Biomaterials
- Accession number :
- edsair.doi.dedup.....42351a59ee5b6c5b279de74a41e3ad04