Detection of intracellular phosphorylated STAT-4 by flow cytometry
The convergence of innate and adaptive immunity is critical for host defense, allowing for early protection and the generation of specific responses. STAT-4 is at that point of convergence, unifying the IFNalpha and IL-12 pathways. Activation of STAT-4 is crucial to T cell polarization, B cell and N...
| Veröffentlicht in: | Clinical immunology (Orlando, Fla.). - 1999. - 100(2001), 3 vom: 01. Sept., Seite 270-6 |
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| Weitere Verfasser: | , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Zugriff auf das übergeordnete Werk: | Clinical immunology (Orlando, Fla.) |
| Schlagworte: | Journal Article DNA-Binding Proteins Interferon-alpha STAT4 Transcription Factor Stat4 protein, mouse Trans-Activators Interleukin-12 187348-17-0 |
| Zusammenfassung: | The convergence of innate and adaptive immunity is critical for host defense, allowing for early protection and the generation of specific responses. STAT-4 is at that point of convergence, unifying the IFNalpha and IL-12 pathways. Activation of STAT-4 is crucial to T cell polarization, B cell and NK cell activation, and the control of intracellular pathogens. However, techniques to detect phosphorylated STAT-4 are cumbersome and require many cells. We have developed a flow cytometric detection technique to investigate IL-12 signaling in human peripheral blood mononuclear cells. Using different polyclonal antibodies that recognize either total STAT-4 protein or tyrosine-phosphorylated STAT-4, we can easily detect IL-12 and IFNalpha signaling in PHA/IL-2 blasts derived from peripheral blood lymphocytes. This technique not only allows us to evaluate IL-12 signaling, but it is also less time consuming and labor intensive than alternative methods. Using this flow cytometry-based method, we should be able to detect patients with defects in IL-12 receptor signal transduction, who typically present with disseminated nontuberculous mycobacterial infections |
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| Beschreibung: | Date Completed 20.09.2001 Date Revised 17.11.2005 published: Print Citation Status MEDLINE |
| ISSN: | 1521-7035 |