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[A recombinant autoantigen U 1 RNP 70,000: expression in E. coli. and its serodiagnostic application]
1Department of Rheumatology, Renji Hospital, Shanghai Second Medical University, Shanghai Immunology Institute.
Zhonghua Yi Xue Za Zhi
|May 1, 1997
Summary
Recombinant U 1 RNP 70,000 was successfully expressed and demonstrated high diagnostic accuracy. This recombinant autoantigen shows promise for reliable serodiagnostic detection of anti-70,000 antibodies.
Area of Science:
- Immunology
- Molecular Biology
- Autoimmunity
Background:
- Autoantibodies against U 1 RNP 70,000 are significant biomarkers in certain autoimmune diseases.
- Accurate serodiagnostic tools are crucial for diagnosing and monitoring autoimmune conditions.
- The diagnostic utility of recombinant U 1 RNP 70,000 requires thorough evaluation.
Purpose of the Study:
- To express the recombinant autoantigen U 1 RNP 70,000 (r 70,000).
- To assess the serodiagnostic value and specificity of the expressed r 70,000.
Main Methods:
- Molecular cloning techniques were employed for the expression of recombinant U 1 RNP 70,000.
- Immunoblotting technique (IBT) was utilized to evaluate antigenicity and serodiagnostic performance.
Main Results:
- The expressed recombinant proteins exhibited authentic U 1 RNP 70,000 antigenicity.
- The molecular weight of the recombinant proteins corresponded to their theoretical values.
- A high detection rate of 97.4% (112 out of 115) was observed for anti-70,000 positive sera using r 70,000.
Conclusions:
- Recombinant U 1 RNP 70,000 (r 70,000) demonstrates good specificity for serodiagnostic detection.
- The r 70,000 is suitable for reliable serodiagnostic detection of anti-70,000 antibodies.
- This recombinant antigen can be valuable for further detailed epitope mapping studies.