Related Experiment Video
Updated: Aug 9, 2026
Method for Whole Mount Antibody Staining in Chick
Published on: February 2, 2009
[Preparation, identification and preliminary application of anti-desmoplakin I monoclonal antibody]
1Department of Pathology, West China University of Medical Sciences, Chengdu.
Insights
Researchers developed a monoclonal antibody (McAb) targeting Desmoplakin I (DP I). This DP I McAb reliably identifies epithelial tumors and meningiomas through immunohistochemical staining of desmosomes.
Area of Science:
- Biochemistry
- Immunology
- Cell Biology
Context:
- Desmosomes are crucial cell-cell adhesion structures in epithelial tissues.
- Desmoplakin I (DP I) is a major component of desmosomes.
- Accurate diagnosis of epithelial tumors and meningiomas is clinically significant.
Purpose:
- To purify Desmoplakin I (DP I) from bovine epidermis desmosomes.
- To generate a monoclonal antibody (McAb) against DP I.
- To evaluate the diagnostic utility of the anti-DP I McAb in immunohistochemistry.
Summary:
- Desmoplakin I was purified from cow nose epidermis desmosomes.
- A monoclonal antibody (McAb) against DP I was produced using hybridoma technology.
- Immunohistochemical analysis revealed specific punctate staining along cell borders in normal epithelia, epithelial tumors, and meningiomas.
- Non-epithelial tissues and tumors showed negative staining, indicating tissue specificity.
Impact:
- The anti-DP I McAb serves as a reliable immunohistochemical probe.
- This antibody aids in the diagnosis of epithelial tumors.
- The antibody is also effective for diagnosing meningioma.
Abstract:
Desmosomes were isolated first from fresh cow nose epidermis. Desmoplakin I (DP I) was purified from desmosome preparations by SDS-polyacrylamide gel electrophoresis and anti-DP I McAb was obtained via hybridoma technique. The tissue specificity showed that all the normal epithelia, different kinds of epithelial tumors and meningioma were positive, whereas non-epithelial tissues and their corresponding tumors gave a negative result. Positive staining showed a series of punctate reaction locating along the cell-cell borders, each spot representing a desmosome or a cluster of closely spaced desmosomes. It is suggested that McAb of DP I is a reliable immunohistochemical probe for epithelial tumor and meningioma diagnosis.
