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CSE1L/CAS: its role in proliferation and apoptosis
P Behrens1, U Brinkmann, A Wellmann
1Institute of Pathology, University of Bonn, Bonn, Germany.
Apoptosis : an International Journal on Programmed Cell Death
|January 3, 2003
Summary
The CAS gene, implicated in cell proliferation and cancer, plays a role in the mitotic spindle checkpoint. Inhibiting MEK1 phosphorylation of CAS may offer a novel cancer therapy strategy.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- CAS/CSE1L, the human homologue of yeast CSE1, is linked to breast cancer resistance to apoptosis.
- CAS is involved in cell proliferation and functions in the mitotic spindle checkpoint.
- The CAS gene is located on chromosome 20q13, a region amplified in various cancers.
Purpose of the Study:
- To investigate the role of CAS in cancer proliferation and its potential as a therapeutic target.
- To explore the relationship between CAS, MEK1 phosphorylation, and apoptosis in cancer cells.
Main Methods:
- Gene cloning and functional analysis of CAS/CSE1L.
- Investigating CAS involvement in the mitotic spindle checkpoint and nuclear transport.
- Examining the effect of MEK1 inhibition on CAS phosphorylation and cancer cell apoptosis.
Main Results:
- CAS depletion causes cell-cycle arrest, suggesting a role in proliferation.
- CAS is implicated in the nuclear transport of key proteins like p53 and BRCA1.
- MEK1-mediated phosphorylation of CAS is linked to paclitaxel-induced apoptosis.
Conclusions:
- CAS gene amplification/overexpression may disrupt the mitotic spindle checkpoint in cancer.
- Altering CAS activity/phosphorylation via MEK1 inhibition is a potential experimental cancer therapy strategy.
- CAS is a promising target for developing novel anti-cancer treatments.
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