1
|
Wang Y, Cao Y, Mangalam AK, Guo Y, LaFrance-Corey RG, Gamez JD, Atanga PA, Clarkson BD, Zhang Y, Wang E, Angom RS, Dutta K, Ji B, Pirko I, Lucchinetti CF, Howe CL, Mukhopadhyay D. Neuropilin-1 modulates interferon-γ-stimulated signaling in brain microvascular endothelial cells. J Cell Sci 2016; 129:3911-3921. [PMID: 27591257 DOI: 10.1242/jcs.190702] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 08/31/2016] [Indexed: 02/06/2023] Open
Abstract
Inflammatory response of blood-brain barrier (BBB) endothelial cells plays an important role in pathogenesis of many central nervous system inflammatory diseases, including multiple sclerosis; however, the molecular mechanism mediating BBB endothelial cell inflammatory response remains unclear. In this study, we first observed that knockdown of neuropilin-1 (NRP1), a co-receptor of several structurally diverse ligands, suppressed interferon-γ (IFNγ)-induced C-X-C motif chemokine 10 expression and activation of STAT1 in brain microvascular endothelial cells in a Rac1-dependent manner. Moreover, endothelial-specific NRP1-knockout mice, VECadherin-Cre-ERT2/NRP1flox/flox mice, showed attenuated disease progression during experimental autoimmune encephalomyelitis, a mouse neuroinflammatory disease model. Detailed analysis utilizing histological staining, quantitative PCR, flow cytometry and magnetic resonance imaging demonstrated that deletion of endothelial NRP1 suppressed neuron demyelination, altered lymphocyte infiltration, preserved BBB function and decreased activation of the STAT1-CXCL10 pathway. Furthermore, increased expression of NRP1 was observed in endothelial cells of acute multiple sclerosis lesions. Our data identify a new molecular mechanism of brain microvascular endothelial inflammatory response through NRP1-IFNγ crosstalk that could be a potential target for intervention of endothelial cell dysfunction in neuroinflammatory diseases.
Collapse
Affiliation(s)
- Ying Wang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ying Cao
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ashutosh K Mangalam
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa city, IA 52242, USA
| | - Yong Guo
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Jeffrey D Gamez
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | | | | | - Yuebo Zhang
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Enfeng Wang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ramcharan Singh Angom
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Kirthica Dutta
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Baoan Ji
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Istvan Pirko
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Charles L Howe
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| |
Collapse
|