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Individual neural cell types express immunologically distinct N-CAM forms.

R K Williams, C Goridis, R Akeson

The Journal of Cell Biology

|July 1, 1985

Summary

Researchers identified a unique neural cell adhesion molecule (N-CAM) form in adult rats using monoclonal antibody 3G6.41. This distinct N-CAM is selectively expressed on certain neural, glial, and muscle cells, offering new insights into cell adhesion.

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Area of Science:

Neuroscience
Molecular Biology
Immunology

Background:

Neural cell adhesion molecules (N-CAMs) are glycoproteins crucial for vertebrate neural tissue development and function.
Adult brain N-CAMs typically present with molecular weights of 180,000, 140,000, and 120,000.
Understanding N-CAM heterogeneity is vital for deciphering neural development and cell interactions.

Purpose of the Study:

To identify and characterize immunologically distinct forms of adult rat N-CAM.
To investigate the selective expression of a novel N-CAM form on various cell types.
To utilize monoclonal antibody (Mab) 3G6.41 for N-CAM characterization.

Main Methods:

Immunoprecipitation using rabbit anti-N-CAM and monoclonal antibody (Mab) 3G6.41.

Related Experiment Videos

Analysis of N-CAM binding and immunoprecipitation from rat neuronal and glial cell lines.

Immunohistochemical analysis of N-CAM expression in primary cell cultures.

Main Results:

A unique adult rat N-CAM form, recognized by Mab 3G6.41, was identified.
This distinct N-CAM form is selectively expressed on some neuronal, glial, and muscle cell lines.
Mab 3G6.41 immunoprecipitated N-CAM forms from B35, B104, C6, and L6 cell lines, but not B12 or B65.

Conclusions:

A novel, immunologically distinct N-CAM variant exists in adult rat tissues.
The expression of this unique N-CAM form is cell-type specific, found on subsets of neuronal, glial, and muscle cells.
Mab 3G6.41 is a valuable tool for identifying and studying this specific N-CAM variant.