Original ArticleClinical NanomedicineInteraction of hemoglobin and copper nanoparticles: implications in hemoglobinopathy
Section snippets
Hemolysate preparations
Blood samples were collected in EDTA vials from normal persons. The whole blood was centrifuged at 3000g for 10 minutes and washed three times in normal saline, forming packed red blood cells (RBCs). Hemolysis was performed by mixing 100 μL of packed RBCs in 500 μL of lysis buffer (2.5 M NaCl, 100 mM EDTA–Na salt, 1% Triton X-100, and 10% DMSO). The solution was applied to a Sephadex G-50 column equilibrated with 0.1 M phosphate buffer, pH 7.0. Elution was carried out with 0.1 M phosphate
Results and discussion
Dynamic light scattering (DLS) studies indicate that the clusters of the CuNPs [9] assume a size of 160 nm. Notably, the clusters are broken when one adds protein (HbA0) to the CuNP suspension. Figure 1 shows initial declustering of the NPs at different intervals of time, followed by formation of an extended structure (see differently colored DLS size graphs in Figure 1). Longer incubation with CuNPs leads to protein aggregation and precipitation. The initial increase in absorbance that is
References (12)
- et al.
Ferrous and ferric iron accumulates in the brain of aged Long-Evans Cinnamon rats, an animal model of Wilson's disease
Neurosci Lett
(2005) - et al.
Unfolding of hemoglobin variants—insights from urea gradient gel electrophoresis photon correlation spectroscopy and zeta potential measurements
Analytica Chimica Acta
(2004) - et al.
Novel D-penicillamine carrying nanoparticles for metal chelation therapy in Alzheimer's and other CNS diseases
Eur J Pharm Biopharm
(2005) - et al.
Trace metal contamination initiates the apparent auto-aggregation, amyloidosis, and oligomerization of Alzheimer's Aβ peptides
J Biol Inorg Chem
(2004) - et al.
Iron and brain disorders
Am J Clin Pathol
(2004) - et al.
Diminution of toxic copper accumulation in toxic milk mice modeling Wilson disease by embryonic hepatocyte intrasplenic transplantation
World J Gastroenterol
(2005)