Conformational changes of fibrinogen in dispersed carbon nanotubes
- Authors
- Park, Sung Jean; Khang, Dongwoo
- Issue Date
- 2012
- Publisher
- DOVE MEDICAL PRESS LTD
- Keywords
- carbon nanotubes; fibrinogen; nanotoxicity; conformational change; denaturation
- Citation
- INTERNATIONAL JOURNAL OF NANOMEDICINE, v.7, pp.4325 - 4333
- Journal Title
- INTERNATIONAL JOURNAL OF NANOMEDICINE
- Volume
- 7
- Start Page
- 4325
- End Page
- 4333
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/17562
- DOI
- 10.2147/IJN.S33696
- ISSN
- 1178-2013
- Abstract
- The conformational changes of plasma protein structures in response to carbon nanotubes are critical for determining the nanotoxicity and blood coagulation effects of carbon nanotubes. In this study, we identified that the functional intensity of carboxyl groups on carbon nanotubes, which correspond to the water dispersity or hydrophilicity of carbon nanotubes, can induce conformational changes in the fibrinogen domains. Also, elevation of carbon nanotube density can alter the secondary structures (ie, helices and beta sheets) of fibrinogen. Furthermore, fibrinogen that had been in contact with the nanoparticle material demonstrated a different pattern of heat denaturation compared with free fibrinogen as a result of a variation in hydrophilicity and concentration of carbon nanotubes. Considering the importance of interactions between carbon nanotubes and plasma proteins in the drug delivery system, this study elucidated the correlation between nanoscale physiochemical material properties of carbon nanotubes and associated structural changes in fibrinogen.
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