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New Findings from L.T. Liu et al Broadens Understanding of Nanocomposites (Hydrazide Functionalized Core-Shell Magnetic Nanocomposites for Highly...

July 1, 2014



New Findings from L.T. Liu et al Broadens Understanding of Nanocomposites (Hydrazide Functionalized Core-Shell Magnetic Nanocomposites for Highly Specific Enrichment of N-Glycopeptides)

By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Nanocomposites is now available. According to news reporting from Xi'an, People's Republic of China, by NewsRx journalists, research stated, "In view of the biological significance of glycosylation for human health, profiling of glycoproteome from complex biological samples is highly inclined toward the discovery of disease biomarkers and clinical diagnosis. Nevertheless, because of the existence of glycopeptides at relatively low abundances compared with nonglycosylated peptides and glycan microheterogeneity, glycopeptides need to be highly selectively enriched from complex biological samples for mass spectrometry analysis."

The news correspondents obtained a quote from the research, "Herein, a new type of hydrazide functionalized core shell magnetic nanocomposite has been synthesized for highly specific enrichment of N-glycopeptides. The nanocomposites with both the magnetic core and the polymer shell hanging high density of hydrazide groups were prepared by first functionalization of the magnetic core with polymethacrylic acid by reflux precipitation polymerization to obtain the Fe3O4@poly(methacrylic acid) (Fe3O4@PMAA) and then modification of the surface of Fe3O4@PMAA with adipic acid dihydrazide (ADH) to obtain Fe3O4@poly(methacrylic hydrazide) (Fe3O4@PMAH). The abundant hydrazide groups toward highly specific enrichment of glycopeptides and the magnetic core make it suitable for large-scale, high-throughput, and automated sample processing. In addition, the hydrophilic polymer surface can provide low nonspecific adsorption of other peptides. Compared to commercially available hydrazide resin, Fe3O4@PMAH improved more than 5 times the signal-to-noise ratio of standard glycopeptides. Finally, this nanocomposite was applied in the profiling of N-glycoproteome from the colorectal cancer patient serum. In total, 175 unique glycopeptides and 181 glycosylation sites corresponding to 63 unique glycoproteins were identified in three repeated experiments, with the specificities of the enriched glycopeptides and corresponding glycoproteins of 69.6% and 80.9%, respectively."

According to the news reporters, the research concluded: "Because of all these attractive features, we believe that this novel hydrazide functionalized core shell magnetic nanocomposite will shed new light on the profiling of N-glycoproteome from complex biological samples in high throughput."

For more information on this research see: Hydrazide Functionalized Core-Shell Magnetic Nanocomposites for Highly Specific Enrichment of N-Glycopeptides. ACS Applied Materials & Interfaces, 2014;6(10):7823-7832. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)

Our news journalists report that additional information may be obtained by contacting L.T. Liu, Shaanxi Coal & Chem Technol Inst Co Ltd, Xian 710065, People's Republic of China. Additional authors for this research include M. Yu, Y. Zhang, C.C. Wang and H.J. Lu (see also Nanocomposites).

Keywords for this news article include: Asia, Xi'an, Nanotechnology, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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