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Related Concept Videos

Complement System01:27

Complement System

The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a membrane...

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Related Experiment Video

Updated: Jun 1, 2026

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
09:28

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes

Published on: January 10, 2017

Complement activation by carbon nanotubes.

Malgorzata J Rybak-Smith1, Robert B Sim

  • 1Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK. mrybaksmith@gmail.com

Advanced Drug Delivery Reviews
|June 15, 2011
PubMed
Summary
This summary is machine-generated.

Carbon nanotubes (CNTs) interact with the body's innate immune system, specifically the complement system. Surface modifications to CNTs do not fully prevent this interaction, potentially limiting biomedical applications.

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Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

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Area of Science:

  • Biomaterials Science
  • Immunology
  • Nanotechnology

Background:

  • Carbon nanotubes (CNTs) are synthetic materials with potential biomedical applications.
  • The innate immune system, particularly the complement system, recognizes foreign materials.
  • Understanding CNT-immune system interactions is crucial for safe biomedical use.

Purpose of the Study:

  • To investigate the interaction between carbon nanotubes (CNTs) and the complement system.
  • To assess the impact of CNT surface modification on complement activation.
  • To evaluate the implications of these interactions for biomedical applications.

Main Methods:

  • Studied the recognition of CNTs by complement proteins in human blood.
  • Investigated the role of collectins in the lungs regarding CNT interaction.
  • Analyzed how surface chemistry modifications affect CNT-complement protein binding.

Main Results:

  • CNTs are recognized by complement system components and lung collectins.
  • Surface functionalization of CNTs does not entirely prevent complement activation or protein binding.
  • CNT-complement interactions may influence adhesion to phagocytic and red blood cells.

Conclusions:

  • Current CNT functionalizations do not fully mitigate complement system activation.
  • Harmful effects from excessive complement activation can limit CNTs in biomedicine.
  • Further research is needed to develop CNTs suitable for safe biomedical applications.