A hybrid approach combining fluctuating hydrodynamics with generalized Langevin dynamics is employed to study the motion of a neutrally buoyant nanocarrier in an incompressible Newtonian stationary fluid medium. Both hydrodynamic interactions and adhesive interactions are included, as are different receptor–ligand bond constants relevant to medical applications. A direct numerical simulation adopting an arbitrary Lagrangian–Eulerian based finite element method is employed for the simulation. The flow around the particle and its motion are fully resolved. The temperatures of the particle associated with the various degrees of freedom satisfy the equipartition theorem. The potential of mean force (or free energy density) along a specified reaction coordinate for the harmonic (spring) interactions between the antibody and antigen is evaluated for two different bond constants. The numerical evaluations show excellent comparison with analytical results. This temporal multiscale modeling of hydrodynamic and microscopic interactions mediating nanocarrier motion and adhesion has important implications for designing nanocarriers for vascular targeted drug delivery.
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e-mail: umab@seas.upenn.edu
e-mail: rradhak@seas.upenn.edu
e-mail: David.Eckmann@uphs.upenn.edu
e-mail: ayya@seas.upenn.edu
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August 2012
Research-Article
Nanocarrier–Cell Surface Adhesive and Hydrodynamic Interactions: Ligand–Receptor Bond Sensitivity Study
B. Uma,
e-mail: umab@seas.upenn.edu
B. Uma
Department of Anesthesiology and Critical Care
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: umab@seas.upenn.edu
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R. Radhakrishnan,
e-mail: rradhak@seas.upenn.edu
R. Radhakrishnan
Department of Bioengineering
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: rradhak@seas.upenn.edu
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D. M. Eckmann,
e-mail: David.Eckmann@uphs.upenn.edu
D. M. Eckmann
Department of Anesthesiology and Critical Care
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: David.Eckmann@uphs.upenn.edu
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P. S. Ayyaswamy
e-mail: ayya@seas.upenn.edu
P. S. Ayyaswamy
1
Department of Mechanical Engineering
and Applied Mechanics
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: ayya@seas.upenn.edu
1Corresponding author.
Search for other works by this author on:
B. Uma
Department of Anesthesiology and Critical Care
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: umab@seas.upenn.edu
R. Radhakrishnan
Department of Bioengineering
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: rradhak@seas.upenn.edu
D. M. Eckmann
Department of Anesthesiology and Critical Care
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: David.Eckmann@uphs.upenn.edu
P. S. Ayyaswamy
Department of Mechanical Engineering
and Applied Mechanics
,University of Pennsylvania
,Philadelphia, PA 19104
e-mail: ayya@seas.upenn.edu
1Corresponding author.
Manuscript received April 27, 2012; final manuscript received August 21, 2012; published online January 18, 2013. Assoc. Editor: Debjyoti Banerjee.
J. Nanotechnol. Eng. Med. Aug 2012, 3(3): 031010 (8 pages)
Published Online: January 18, 2013
Article history
Received:
April 27, 2012
Revision Received:
August 21, 2012
Citation
Uma, B., Radhakrishnan, R., Eckmann, D. M., and Ayyaswamy, P. S. (January 18, 2013). "Nanocarrier–Cell Surface Adhesive and Hydrodynamic Interactions: Ligand–Receptor Bond Sensitivity Study." ASME. J. Nanotechnol. Eng. Med. August 2012; 3(3): 031010. https://doi.org/10.1115/1.4007522
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