Profiling human serum antibodies with a carbohydrate antigen microarray.

Profiling human serum antibodies with a carbohydrate antigen microarray.
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DOI:
10.1021/pr900515y
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发表时间:
2009-09
影响因子:
4.4
通讯作者:
Gildersleeve, Jeffrey C.
Gildersleeve, Jeffrey C.
中科院分区:
生物学2区
文献类型:
--
作者:
Oyelaran, Oyindasola;McShane, Lisa M.;Dodd, Lori;Gildersleeve, Jeffrey C.

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Carbohydrate antigen arrays (glycan arrays) have been recently developed for the high-throughput analysis of carbohydrate macromolecule interactions. When profiling serum, information about experimental variability, inter-individual biological variability, and intra-individual temporal variability is critical. In this report, we describe the characterization of a carbohydrate antigen array and assay for profiling human serum. Through optimization of assay conditions and development of a normalization strategy, we obtain highly reproducible results with a within-experiment coefficient of variation (CV) of 10.8% and an overall CV (across multiple batches of slides and days) of 28.5%. We also report antibody profiles for 48 human subjects and evaluate for the first time the effects of age, race, sex, geographic location, and blood type on antibody profiles for a large set of carbohydrate antigens. We found significant dependence on age and blood type of antibody levels for a variety of carbohydrates. Finally, we conducted a longitudinal study with a separate group of 7 serum donors to evaluate the variation in anti-carbohydrate antibody levels within an individual over a period ranging from 3 to 13 weeks and found that, for nearly all antigens on our array, antibody levels are generally stable over this period. The results presented here provide the most comprehensive evaluation of experimental and biological variation reported to date for a glycan array and have significant implications for studies involving human serum profiling.
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