Rapid vesicular translocation and insertion of TRP channels

The broadly expressed transient receptor potential (TRP) family of ion channels are permeant to cations, most resulting in increased intracellular calcium. However, their regulation and gating is not well understood. Here, we report that growth factor stimulation initiates the rapid translocation of the transient receptor potential ion channel, TRPC5, from vesicles held in reserve just under the plasma membrane. This process, which we term 'rapid vesicular insertion of TRP' (RiVIT), dramatically increases membrane-associated TRPC5 channels and functional TRPC5 current, resulting in tight spatial-temporal control of these Ca(2+)-permeant nonselective channels. Epidermal growth factor (EGF)-induced incorporation of functional TRP channels requires phosphatidylinositide 3-kinase (PI(3)K), the Rho GTPase Rac1 and phosphatidylinositol 4-phosphate 5-kinase (PIP(5)K alpha). The increase in TRPC5 availability affects neurite extension rates in cultured hippocampal neurons, and may be a general mechanism for initiating Ca(2+) influx and cell morphological changes in response to stimuli.

Errataetall:

CommentIn: Nat Cell Biol. 2004 Aug;6(8):690-2. - PMID 15303095

Medienart:

Artikel

Erscheinungsjahr:

2004

Erschienen:

2004

Enthalten in:

Zur Gesamtaufnahme - volume:6

Enthalten in:

Nature cell biology - 6(2004), 8 vom: 23. Aug., Seite 709-20

Sprache:

Englisch

Beteiligte Personen:

Bezzerides, Vassilios J [VerfasserIn]
Ramsey, I Scott [VerfasserIn]
Kotecha, Suhas [VerfasserIn]
Greka, Anna [VerfasserIn]
Clapham, David E [VerfasserIn]

Themen:

1-phosphatidylinositol-4-phosphate 5-kinase
147336-22-9
2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one
31M2U1DVID
62229-50-9
Androstadienes
Calcium Channels
Cation Transport Proteins
Chromones
EC 2.7.1.-
EC 2.7.1.68
EC 3.6.5.2
Enzyme Inhibitors
Epidermal Growth Factor
Green Fluorescent Proteins
Journal Article
Luminescent Proteins
Morpholines
Phosphatidylinositol 3-Kinases
Phosphotransferases (Alcohol Group Acceptor)
Rac1 GTP-Binding Protein
Research Support, Non-U.S. Gov't
TRPC Cation Channels
TRPC5 protein, human
Wortmannin
XVA4O219QW

Anmerkungen:

Date Completed 27.08.2004

Date Revised 22.07.2023

published: Print-Electronic

CommentIn: Nat Cell Biol. 2004 Aug;6(8):690-2. - PMID 15303095

Citation Status MEDLINE

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM149421362