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Expression cloning.

Michael J Lodes¹, Davin C Dillon, Raymond L Houghton

¹Corixa Corporation, Seattle, WA, USA.

Methods in Molecular Medicine

|February 13, 2004

Summary

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This study details constructing a genomic expression library for identifying disease-causing agents. The method aids in discovering diagnostic and vaccine components for infectious diseases.

Area of Science:

Molecular Biology
Immunology
Infectious Diseases

Background:

Expression cloning selects polypeptides based on protein characteristics like antibody binding or cell function.
Genomic and cDNA libraries are crucial for expressing these polypeptides.

Purpose of the Study:

To describe the construction of a genomic, random shear lambda expression library.
To detail the screening process using specific antisera.
To identify genes for diagnosing infectious diseases.

Main Methods:

Construction of a genomic, random shear lambda expression library.
Adsorption of anti-Escherichia coli antibody from antiserum.
Screening of the expression library with specific antisera.
Cloning of genes for potential diagnostic applications.

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Main Results:

Successful construction and screening of a genomic expression library.
Identification of antigenic components from various infectious agents.
Demonstrated utility in discovering diagnostic and vaccine candidates.

Conclusions:

The described expression library construction and screening method is effective for identifying novel diagnostic and vaccine targets.
This approach has proven successful for multiple infectious agents, including Mycobacterium tuberculosis and Chlamydia spp.