Heme Oxygenase-1 Modulates Human Respiratory Syncytial Virus Replication and Lung Pathogenesis during Infection

作者：Espinoza Janyra A; Leon Miguel A; Cespedes Pablo F; Gomez Roberto S; Canedo Marroquin Gisela; Riquelme Sebastian A; Salazar Echegarai Francisco J; Blancou Phillipe; Simon Thomas; Anegon Ignacio; Lay Margarita K; Gonzalez Pablo A; Riedel Claudia A; Bueno Susan M; Kalergis Alexis M^*

来源：The Journal of Immunology, 2017, 199(1): 212-223.

DOI：10.4049/jimmunol.1601414

Human respiratory syncytial virus (hRSV) is the leading cause of severe lower respiratory tract infections in children. The development of novel prophylactic and therapeutic antiviral drugs against hRSV is imperative to control the burden of disease in the susceptible population. In this study, we examined the effects of inducing the activity of the host enzyme heme oxygenase-1 (HO-1) on hRSV replication and pathogenesis on lung inflammation induced by this virus. Our results show that after hRSV infection, HO-1 induction with metalloporphyrin cobalt protoporphyrin IX significantly reduces the loss of body weight due to hRSV-induced disease. Further, HO-1 induction also decreased viral replication and lung inflammation, as evidenced by a reduced neutrophil infiltration into the airways, with diminished cytokine and chemokine production and reduced T cell function. Concomitantly, upon cobalt protoporphyrin IX treatment, there is a significant upregulation in the production of IFN-alpha/beta mRNAs in the lungs. Furthermore, similar antiviral and protective effects occur by inducing the expression of human HO-1 in MHC class II + cells in transgenic mice. Finally, in vitro data suggest that HO-1 induction can modulate the susceptibility of cells, especially the airway epithelial cells, to hRSV infection.

• 出版日期2017-7-1