Article (Scientific journals)
Ins(1,3,4,5)P4 negatively regulates PtdIns(3,4,5)P3 signaling in neutrophils
Jia, Y.; Subramanian, K. K.; Erneux, C. et al.
2007In Immunity, 27, p. 453-467
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Keywords :
Ins(1,3,4,5)P4; Neutrophils function
Abstract :
[en] Many neutrophil functions are regulated by phosphatidylinositol-3,4,5-trisphosphate (PtdIns(3,4,5)P3) that mediates protein membrane translocation via binding to pleckstrin homolog (PH) domains within target proteins. Here we show that inositol 1,3,4,5-tetrakisphosphate(Ins(1,3,4,5)P4), a cytosolic small molecule, bound the same PH domain of target proteins and competed for binding to PtdIns(3,4,5)P3. In neutrophils, chemoattractant stimulation triggered rapid elevation in Ins(1,3,4,5)P4 concentration. Depletion of Ins(1,3,4,5)P4 by deleting the gene encoding InsP3KB, which converts Ins(1,4,5)P3 to Ins(1,3,4,5)P4, enhanced membrane translocation of the PtdIns(3,4,5)P3-specific PH domain. This led to enhanced sensitivity to chemoattractant stimulation, elevated superoxide production, and enhanced neutrophil recruitment to inflamed peritoneal cavity. On the contrary, augmentation of intracellular Ins(1,3,4,5)P4 concentrationblockedPHdomainmediated membrane translocation of target proteins and dramatically decreased the sensitivity of neutrophils to chemoattractant stimulation. These findings establish a role for Ins(1,3,4,5)P4 in cellular signal transduction pathways and provide another mechanism for modulating PtdIns(3,4,5)P3 signaling in neutrophils.
Disciplines :
Biochemistry, biophysics & molecular biology
Genetics & genetic processes
Author, co-author :
Jia, Y.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Subramanian, K. K.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Erneux, C.;  Université Libre de Bruxelles - ULB > IRIBHM
Pouillon, V.;  Université Libre de Bruxelles - ULB > IRIBHM
Hattori, H.;  Harvard Medical School, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Jo, H.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
You, J.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Zhu, D.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Serhan, C.;  Harvard Medical School > Department of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Schurmans, Stéphane  ;  Université Libre de Bruxelles - ULB > IRIBHM
Luo, H. R.;  Harvard Medical School > Dept of Pathology, Dana-Farber/Harvard Cancer Center, Department of Lab Medicine, Children’s Hospital Boston, Karp Family Research Building, Room 10214, Boston, MA 02115, USA
Language :
English
Title :
Ins(1,3,4,5)P4 negatively regulates PtdIns(3,4,5)P3 signaling in neutrophils
Publication date :
2007
Journal title :
Immunity
ISSN :
1074-7613
eISSN :
1097-4180
Publisher :
Cell Press, Cambridge, United States - Massachusetts
Volume :
27
Pages :
453-467
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2009

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