Journal: PLOS Pathogens
Article Title: Porcine reproductive and respiratory syndrome virus 2 hijacks CMA-mediated lipolysis through upregulation of small GTPase RAB18
doi: 10.1371/journal.ppat.1012123
Figure Lengend Snippet: (A and B) PAM (A) and MARC-145 (B) cells were infected with LP-PRRSV-2 (MOI = 10) for 0–36 h. The mRNA levels of RAB18 were analyzed by qRT-PCR. * P < 0.05, ** P < 0.01, *** P < 0.001. (C and D) MARC-145 cells were infected with LP-PRRSV-2 (MOI = 10, C) and HP-PRRSV-2 (MOI = 10, D) for 0–36 h. RAB18 and ACTB were analyzed by immunoblot analysis. (E) Immunohistochemistry for RAB18 and PRRSV-2-N in mock-infected or LP-PRRSV-2-infected porcine lungs (left). Asterisks indicate non-infected cells. Scale bar: 200 μm. The quantification of relative fluorescence intensity of PRRSV-2-N is shown on the right (n = 20). *** P < 0.001. (F) MARC-145 cells were transfected with the indicated RAB18-LUC plasmids for 12 h and then mock-infected or infected with LP-PRRSV-2 (MOI = 10) for 24 h. RAB18 promoter activities were assessed by dual-luciferase reporter assay. *** P < 0.001. ns, not significance. (G) MARC-145 cells were transfected with sicontrol or si RELA -1 for 24 h, followed by infection with LP-PRRSV-2 (MOI = 10) for 24 h. ChIP assays were performed with IgG or an antibody against RELA. The RAB18 promoter was amplified by primer-1 (146 bp) and primer-2 (96 bp). (H) The treatment of MARC-145 cells was as described in (G). ChIP assays were performed with IgG or an antibody against RELA. *** P < 0.001. (I) MARC-145 cells were transfected with sicontrol, siR IG-I -1, si RIG-I -2, si MAVS -1, si MAVS -2, si RELA -1, si RELA -2, si RELB -1, and si RELB -2 for 36 h. The mRNA levels of RIG-I, MAVS, RELA, and RELB were analyzed by qRT-PCR analysis. *** P < 0.001. (J) MARC-145 cells were transfected with sicontrol, siR IG-I -1, si RIG-I -2, si MAVS -1, si MAVS -2, si RELA -1, si RELA -2, si RELB -1, and si RELB -2 for 24 h, then infected with LP-PRRSV-2 (MOI = 10) for 0–48 h. The mRNA levels of RAB18 were analyzed by qRT-PCR analysis. * P < 0.05, ** P < 0.01.
Article Snippet: Sections were then washed and further blocked with mouse and rabbit IgG (Proteintech, B900620 and 30000-0-AP) for 30 minutes before incubation with an Alexa Fluor 488-labeled mouse anti-PRRSV-2-N antibody and an Alexa Fluor 568-labeled rabbit anti-RAB18 antibody.
Techniques: Infection, Quantitative RT-PCR, Western Blot, Immunohistochemistry, Fluorescence, Transfection, Luciferase, Reporter Assay, Amplification