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Zhou J, Chi X, Cheng M, Huang X, Liu X, Fan J, Xu H, Lin T, Shi L, Qin C, Yang W. Zika virus degrades the ω-3 fatty acid transporter Mfsd2a in brain microvascular endothelial cells and impairs lipid homeostasis. Sci Adv 2019; 5:eaax7142. [PMID: 31681849 PMCID: PMC6810275 DOI: 10.1126/sciadv.aax7142] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 09/13/2019] [Indexed: 05/24/2023]
Abstract
Zika virus (ZIKV) infection during pregnancy increases the risk of postnatal microcephaly. Neurovascular function provides a homeostatic environment for proper brain development. The major facilitator superfamily domain-containing protein 2 (Mfsd2a) is selectively expressed in human brain microvascular endothelial cells (hBMECs) and is the major transporter mediating the brain uptake of docosahexaenoic acid (DHA). We have discovered a pivotal role for Mfsd2a in the pathogenesis of ZIKV. ZIKV disrupted Mfsd2a both in cultured primary hBMECs and in the neonatal mouse brain. ZIKV envelope (E) protein specifically interacted with Mfsd2a and promoted Mfsd2a polyubiquitination for proteasome-dependent degradation. Infection with ZIKV or ectopic expression of ZIKV E impaired Mfsd2a-mediated DHA uptake. Lipidomic analysis revealed obvious differences in DHA-containing lipids after ZIKV infection. Supplementation with DHA rescued ZIKV-caused growth restriction and microcephaly. Our findings suggest endothelial Mfsd2a as an important pathogenic mediator and supplementation with DHA as a potential therapeutic option for ZIKV infection.
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Affiliation(s)
- Jia Zhou
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaojing Chi
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Min Cheng
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xingyao Huang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiuying Liu
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jingjing Fan
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hua Xu
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tianli Lin
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei Shi
- The State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chengfeng Qin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wei Yang
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Shi K, Wood K, Shi FD, Wang X, Liu Q. Stroke-induced immunosuppression and poststroke infection. Stroke Vasc Neurol 2018; 3:34-41. [PMID: 29600006 PMCID: PMC5870641 DOI: 10.1136/svn-2017-000123] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 12/03/2017] [Accepted: 12/11/2017] [Indexed: 02/04/2023] Open
Abstract
Infections occur commonly after stroke and are strongly associated with an unfavourable functional outcome of these patients. Approaches for effective management of poststroke infection remain scarce, presenting an urgent need for preventive anti-infection strategies for patients who have suffered a stroke. Emerging evidence indicates that stroke impairs systemic immune responses and increases the susceptibility to infections, suggesting that the modification of impaired immune defence could be beneficial. In this review, we summarised previous attempts to prevent poststroke infections using prophylactic antibiotics and the current understanding of stroke-induced immunosuppression. Further elucidation of the immune mechanisms of stroke will pave the way to tailored design of new treatment to combat poststroke infection via modifying the immune system.
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Affiliation(s)
- Kaibin Shi
- Departments of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
- Departments of Neurology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona, USA
| | - Kristofer Wood
- Departments of Neurology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona, USA
| | - Fu-Dong Shi
- Departments of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
- Departments of Neurology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona, USA
| | - Xiaoying Wang
- Departments of Neurology and Radiology, Neuroprotection Research Laboratory, Massachusetts General Hospital, Neuroscience Program, Harvard Medical School, Boston, Massachusetts, USA
| | - Qiang Liu
- Departments of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
- Departments of Neurology, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona, USA
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