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CD148, a new membrane tyrosine phosphatase involved in leukocyte function
1Servei d'Immunologia, Hospital Clinic, Barcelona, Spain. gaya@medicina.ub.es
Leukemia & Lymphoma
|March 8, 2000
Summary
CD148, a membrane tyrosine phosphatase, regulates leukocyte growth and differentiation. This review covers recent findings on CD148 expression and function across species.
Area of Science:
- Immunology
- Cell Biology
- Biochemistry
Background:
- Protein tyrosine phosphatases (PTPs) are crucial for regulating leukocyte functions.
- CD148 is a recently identified receptor-type membrane PTP expressed on hematopoietic and epithelial cells.
- CD148 expression is upregulated upon cell activation and acts as a signaling molecule.
Purpose of the Study:
- To review recent data on the expression and function of CD148.
- To highlight CD148's role in modulating T-cell receptor (TCR)/CD3 signaling.
- To discuss CD148's potential involvement in cell differentiation and growth inhibition.
Main Methods:
- Literature review of recent studies on CD148.
- Analysis of CD148 expression patterns in human, mouse, and rat.
- Examination of CD148's functional roles in cellular processes.
Main Results:
- CD148 is expressed on all hematopoietic lineages and various epithelial cells.
- CD148 modulates TCR/CD3 signaling, similar to CD45.
- CD148 associates with serine/threonine kinases in certain cell types.
Conclusions:
- CD148 is a significant regulator of leukocyte and epithelial cell biology.
- Further research into CD148's functions may reveal therapeutic targets.
- CD148's multifaceted roles warrant continued investigation across species.