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High-affinity monoclonal antibodies specific for human prostatic acid phosphatase
Clinical Chemistry
|January 1, 1987
Summary
Researchers developed two high-affinity monoclonal antibodies that specifically detect human prostatic acid phosphatase (PAP) in serum. These antibodies offer precise detection of the native enzyme form, crucial for diagnostic applications.
Area of Science:
- Immunology
- Biochemistry
- Oncology
Background:
- Prostatic acid phosphatase (PAP) is a key biomarker for prostate cancer.
- Development of highly specific antibodies is crucial for accurate PAP detection.
Purpose of the Study:
- To produce and characterize monoclonal antibodies with high affinity and specificity for human PAP.
- To evaluate the antibodies' reactivity with the native form of PAP for potential diagnostic use.
Main Methods:
- Generation of hybridoma cell lines secreting IgG antibodies against human PAP.
- Purification of antibodies using affinity chromatography (PAP- and Protein A-Sepharose CL-4B).
- Characterization of antibody specificity and affinity using radioimmunoassay, immunofluorescence, and slot-immunoblotting.
Main Results:
- Two monoclonal hybridoma cell lines produced IgG antibodies with high affinity (Kd = 7.3-8.0 x 10(-11) mol/L) for human PAP.
- Antibodies demonstrated strict specificity for PAP in various human tissues and cell types.
- The antibodies exclusively recognized the native form of the PAP enzyme.
Conclusions:
- Successfully developed high-affinity, specific monoclonal antibodies for human prostatic acid phosphatase.
- These antibodies are suitable for detecting the native PAP enzyme, with potential applications in prostate cancer diagnostics.