Chemically functionalized single-walled carbon nanotubes enhance the glutamate uptake characteristics of mouse cortical astrocytes.

Abstract:

:Using a radioactive glutamate uptake assay and immunolabeling, we report that single-walled carbon nanotubes, chemically functionalized with polyethylene glycol (SWCNT-PEG), delivered as a colloidal solute, cause an increase in the uptake of extracellular glutamate by astrocytes and an increase in the immunoreactivity of the glutamate transporter GLAST on their cell surface, which is likely a consequence of an increase in the immunoreactivity of glial fibrillary acidic protein. Additional corollary is that astrocytes exposed to SWCNT-PEG became larger and stellate, morphological characteristics of maturation and heightened activity of these glial cells. These results imply that SWCNT-PEG could potentially be used as a viable candidate for neural prosthesis applications, perhaps to alleviate the death toll of neurons due to glutamate excitotoxicity, a pathological process observed in brain and spinal cord injuries.

journal_name

Amino Acids

journal_title

Amino acids

authors

Gottipati MK,Bekyarova E,Haddon RC,Parpura V

doi

10.1007/s00726-015-1970-9

subject

Has Abstract

pub_date

2015-07-01 00:00:00

pages

1379-88

issue

7

eissn

0939-4451

issn

1438-2199

journal_volume

47

pub_type

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