Title |
miR-155 Modifies Inflammation, Endothelial Activation and Blood-Brain Barrier Dysfunction in Cerebral Malaria
|
---|---|
Published in |
Molecular Medicine, February 2017
|
DOI | 10.2119/molmed.2016.00139 |
Pubmed ID | |
Authors |
Kevin R. Barker, Ziyue Lu, Hani Kim, Ying Zheng, Junmei Chen, Andrea L. Conroy, Michael Hawkes, Henry S. Cheng, Makon-Sébastien Njock, Jason E. Fish, John M. Harlan, Jose A. López, W. Conrad Liles, Kevin C. Kain |
Abstract |
miR-155 has been shown to participate in host response to infection and neuro-inflammation via negative regulation of blood-brain-barrier (BBB) integrity and T cell function. We hypothesized that miR-155 may contribute to the pathogenesis of cerebral malaria (CM). To test this hypothesis, we used a genetic approach to modulate miR-155 expression in an experimental model of cerebral malaria (ECM). In addition, an engineered endothelialized microvessel system and serum samples from Ugandan children with CM were used to examine an anti-miR-155 as a potential adjunctive therapeutic for severe malaria. Despite higher parasitemia, survival was significantly improved in miR-155(-/-) mice vs. wild-type littermate mice in ECM. Improved survival was associated with preservation of BBB integrity and reduced endothelial activation, despite increased levels of pro-inflammatory cytokines. Pre-treatment with antagomir-155 reduced vascular leak induced by human CM sera in an ex vivo endothelial microvessel model. These data provide evidence supporting a mechanistic role for miR-155 in host response to malaria via regulation of endothelial activation, microvascular leak and BBB dysfunction in CM. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Portugal | 1 | 50% |
France | 1 | 50% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 2 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 89 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 18 | 20% |
Researcher | 15 | 17% |
Student > Master | 13 | 15% |
Student > Bachelor | 8 | 9% |
Student > Postgraduate | 5 | 6% |
Other | 14 | 16% |
Unknown | 16 | 18% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 18 | 20% |
Immunology and Microbiology | 9 | 10% |
Medicine and Dentistry | 9 | 10% |
Neuroscience | 8 | 9% |
Agricultural and Biological Sciences | 6 | 7% |
Other | 14 | 16% |
Unknown | 25 | 28% |