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RhoB Regulates PDGFR-β Trafficking and Signaling in Vascular Smooth Muscle Cells
| Content Provider | Scilit |
|---|---|
| Author | Huang, Minzhou DuHadaway, James B. Prendergast, George C. Laury-Kleintop, Lisa D. |
| Copyright Year | 2007 |
| Description | Journal: Arteriosclerosis, thrombosis, and vascular biology Objective— RhoB is a small GTPase localized at the plasma membrane and endosomes that participates in the regulation of endocytic trafficking of the epidermal growth factor (EGF) receptor and the nonreceptor kinases Src and Akt. This study was performed to determine whether RhoB plays a critical role in trafficking and signaling by the platelet-derived growth factor receptor-β (PDGFR-β) in vascular smooth muscle cells. Methods and Results— Cells derived from RhoB knockout mice failed to proliferate in response to PDGF, and downstream signaling was compromised as reflected by reduced phosphorylation of the effector kinases Akt and ERK1/2. In normal cells, PDGF stimulated trafficking of PDGFR-β into a perinuclear late endosomal compartment and triggered entry of Src, Akt, extracellular signal-regulated kinase (ERK) into the cell nucleus. In contrast, PDGF treatment of RhoB null cells resulted in neither PDGFR-β trafficking to late endosomes nor nuclear localization of Src, Akt, or ERK. In support of an essential function in these processes, restoring expression of RhoB in null cells rescued these defects and restored cell proliferation in response to PDGF. Conclusion— Our findings establish RhoB as a critical regulator of PDGFR-β trafficking and signaling in vascular smooth muscle cells. |
| Related Links | https://www.ahajournals.org/doi/pdf/10.1161/ATVBAHA.107.154211 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4384698/pdf https://www.ahajournals.org/doi/reader/10.1161/ATVBAHA.107.154211 |
| Ending Page | 2605 |
| Page Count | 9 |
| Starting Page | 2597 |
| ISSN | 10795642 |
| e-ISSN | 15244636 |
| DOI | 10.1161/atvbaha.107.154211 |
| Journal | Arteriosclerosis, thrombosis, and vascular biology |
| Issue Number | 12 |
| Volume Number | 27 |
| Language | English |
| Publisher | Ovid Technologies (Wolters Kluwer Health) |
| Publisher Date | 2007-12-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Arteriosclerosis, thrombosis, and vascular biology Endocrinology and Metabolism Platelet-derived Growth Factor Receptor Endocytic Trafficking Vascular Smooth Muscle Cells |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cardiology and Cardiovascular Medicine |
