Antigenicity characterization of six different fragments of SARS-CoV N protein expressed in E. coli / 中华实验和临床病毒学杂志
Chinese Journal of Experimental and Clinical Virology
;
(6): 40-42, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-246187
ABSTRACT
<p><b>OBJECTIVE</b>To determine the antigen characteristics of different fragments of SARS-CoV N protein expressed in E. Coli and their application in the serological diagnosis.</p><p><b>METHODS</b>Based on preliminary analysis of 39 different segments of the N protein, We choosed six purified N protein for further antigenicity characterization in this study, including that PN360 (1 -360aa), PN301 (1-301aa), PN199 (30-228aa), PN185 (30-214aa), PN155b (60-214aa), and PN125 (90-214aa). We developed Western-Bolt and ELISA to detect antibody reactivity between truncated N fragments with sera from SARS-CoV-negative normal adults or SARS-CoV patient convalescent sera.</p><p><b>RESULTS</b>Western-Bolt results show that all the six fragments have reacted with the SARS patient convalescent sera, but the PN360 and PN301 showed obvious cross-reaction with sera from SARS-CoV-negative normal adults; sensitivity analysis using an ELISA coating with PN199, PN185, PN155b, PN125 as antigen showed that the PN185 and PN155b are better than PN125.</p><p><b>CONCLUSION</b>Truncated N protein PN185 and PN155b expressed in E. Coli are better antigen candidates used for detection of SARS-CoV specific antibody.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Peptide Fragments
/
Blood
/
Recombinant Proteins
/
Enzyme-Linked Immunosorbent Assay
/
Serologic Tests
/
Blotting, Western
/
Nucleocapsid Proteins
/
Severe Acute Respiratory Syndrome
/
Diagnosis
/
Allergy and Immunology
Type of study:
Diagnostic study
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Experimental and Clinical Virology
Year:
2012
Type:
Article
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