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Related Concept Videos

Structural Protein Function01:56

Structural Protein Function

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Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
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Protein Adsorption: A Feasible Method for Nanoparticle Functionalization?

Roberta Cagliani1,2, Francesca Gatto3, Giuseppe Bardi4

  • 1Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy. roberta.cagliani@iit.it.

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Summary
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Nanoparticle surfaces in the bloodstream quickly form a biomolecular "corona." Understanding protein adsorption rules is key to designing effective nanomaterials for targeted drug delivery.

Keywords:
drug deliverynanoparticlesprotein coronasurface functionalization

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Nanotechnology

Background:

  • Nanomaterials offer diverse applications due to their unique size, structure, and chemical properties.
  • Biomedical uses, like drug delivery, involve introducing nanoparticles into complex biological environments such as the bloodstream.
  • Nanoparticle-biomolecule interactions are crucial for determining their fate and efficacy in vivo.

Purpose of the Study:

  • To review the phenomenon of "corona" formation on nanoparticles in biological fluids.
  • To explore the adsorption of biomolecules, particularly proteins, onto nanomaterial surfaces.
  • To highlight the role of surface properties in dictating corona composition and guide nanomaterial design for drug delivery.

Main Methods:

  • Reviewing existing literature on nanoparticle-biomolecule interactions.
  • Analyzing the process of biomolecular adsorption onto nanomaterial surfaces.
  • Examining the influence of nanoparticle surface charge and topography on corona formation.

Main Results:

  • Nanoparticle surfaces in biological fluids rapidly acquire a layer of adsorbed biomolecules, termed the "corona."
  • Small proteins constitute the majority of adsorbed molecules in the corona.
  • Nanoparticle surface properties, including charge and topography, appear to influence the specific composition of the corona.

Conclusions:

  • Corona formation is a critical factor influencing nanomaterial behavior in vivo.
  • Further research into surface-protein adsorption mechanisms is needed.
  • Understanding corona formation can aid in the rational design of nanomaterials for improved drug delivery systems.