Journal: Frontiers in Immunology
Article Title: NPC1 promotes HTNV replication by controlling innate immune response
doi: 10.3389/fimmu.2026.1811629
Figure Lengend Snippet: NPC1 disrupts cellular cholesterol distribution. (A) Wild-type and NPC1 knockout HeLa cells were treated with U18666A (10 µM) and HTNV (MOI = 10), cellular cholesterol levels were measured at 48 h post-infection. Non-treatment, U18666A treatment only or HTNV infection only were all parallel control. (B) Wild-type and NPC1 knockout HeLa cells were treated with cholesterol (10 µM) and HTNV (MOI = 1) or not, and viral genome copies within medium and cells of each group were quantified using qPCR. (C) The cellular cholesterol distribution of each group was visualized by Filipin staining following the same treatment as (A) . (D) The represented captures of Filipin staining for each group. WT: wild type HeLa cells, KO: NPC1 knockout HeLa cells. Mock+DMSO: cells were treated with the same amount of DMSO and without HTNV infection; Mock+U18666A: cells were treated with10 μM U18666A and without HTNV infection; HTNV+DMSO: cells treated with the same amount of DMSO and with HTNV infection for 48 hours (MOI=1); HTNV+U18666A: cells were treated with10 μM U18666A andwith HTNV infection for 48 hours (MOI=1).
Article Snippet: Wild-type and NPC1 knockout HeLa cells were grown on a six-well plate for 12 h, 10 μM U18666A and HTNV (MOI = 1) were added to the cells, and the cellular cholesterol level was measured using Tissue Total Cholesterol (TC) Content Assay Kit (APPLYGEN) at 48 h post-infection.
Techniques: Knock-Out, Infection, Control, Staining