Journal: bioRxiv
Article Title: RNA length and receptor usage define innate immune recognition across species
doi: 10.64898/2026.05.21.726451
Figure Lengend Snippet: (A) Schematic overview of RNA fractionation from virus (H5N8 or H1N1)-infected, dsRNA-treated, and mock-treated A549 cells using HPLC. Total RNA was fractionated, and RNA species shorter than 200 nt were collected. The short RNA fraction, either untreated or dephosphorylated with alkaline phosphatase, was used for transfection of human (A549) and chicken (DF-1) cells. (B) Northern blot analysis confirming the presence of endogenous short RNA, SNORD44 (63 nt), in the collected fraction. (C) Induction of antiviral response in human and chicken cells following transfection with the isolated short RNA fraction, assessed by western blot analysis of MX1 protein expression. (D) Analysis of total RNA isolated from virus-infected, dsRNA-treated, and mock-treated A549 cells. rRNA integrity was assessed in a denaturing agarose gel.
Article Snippet: Human lung epithelial A549 cells (CCL-185) and chicken embryo fibroblast DF-1 cells (CRL-3586) were obtained from ATCC.
Techniques: Fractionation, Virus, Infection, Transfection, Northern Blot, Isolation, Western Blot, Expressing, Agarose Gel Electrophoresis