Characterization of uniaxial stiffness of extracellular matrix embedded with magnetic beads via bio-conjugation and under the influence of an external magnetic field.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 24342625.
- Also identified by DOI 10.1016/j.jmbbm.2013.11.012.
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Abstract
In this paper, we study the deformation, and experimentally quantify the change in stiffness, of an extracellular matrix (ECM) embedded with magnetic beads that are bio-conjugated with the collagen fibers and under the influence of an external magnetic field. We develop an analytical model of the viscoelastic behavior of this modified ECM, and design and implement a stretch test to quantify (based on statistically meaningful experiment data) the resulting changes in its stiffness induced by the external magnetic field. The analytical results are in close agreement with that obtained from the experiments. We discuss the implication of these results that point to the possibility of creating desired stiffness gradients in an ECM in vitro to influence cell behavior.
Medical subject headings
- Extracellular Matrix
- Magnetic Fields
- Mechanical Phenomena
- Microspheres