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Lymphocyte signaling

Jonathan B Weitzman

Author Affiliations

Genome Biology 2001, 2:spotlight-20011015-02  doi:10.1186/gb-spotlight-20011015-02


The electronic version of this article is the complete one and can be found online at:


Published:15 October 2001

© 2001 BioMed Central Ltd

Research news

During T-lymphocyte activation, signals from a number of cell-surface receptors must be integrated to ensure the appropriate genetic response. Non-dividing, primary T lymphocytes are notoriously difficult to transfect, presenting an experimental limitation to dissecting signaling mechanisms. In the October issue of Nature Medicine, Michael Bell and researchers from the Mayo Clinic in Rochester, Minnesota, describe an efficient method for introducing DNA into non-dividing lymphocytes, so as to analyze gene regulation (Nature Medicine 2001, 7:1155-1158). They optimized the conditions for transiently transfecting mouse thymocytes and human T cells. Using electroporation they achieved over 50% transfection rates while maintaining high cell viability; they then demonstrated that this transfection technology could be used to examine the effects of MAP kinase signaling. Using multiparameter flow cytometry, Bell et al. showed that constitutively active MEK-1 MAP kinase induced expression of the anti-apoptotic protein Bcl-2 in double-positive (CD4+ CD8+) mouse thymocytes.

References

  1. CD28/B7 system of T cell costimulation.

    PubMed Abstract | Publisher Full Text OpenURL

  2. [http://medicine.nature.com] webcite

    Nature Medicine

  3. [http://www.mayo.edu] webcite

    Mayo Clinic