Influenza B virus RNA (IBV RNA)

Influenza B virus RNA constitutes the segmented, negative-sense, single-stranded genome of the Influenza B virus, which is a primary cause of seasonal respiratory epidemics in humans (Source: NIH/NCBI, 2023). The genome is organized into eight distinct segments that serve as the essential templates for both the synthesis of viral messenger RNA (transcription) and the production of new genomic copies (replication) within the host cell nucleus (Source: WHO, 2023). This replication process is mediated by the viral RNA-dependent RNA polymerase (RdRp) complex, which interacts directly with the viral RNA segments. Because the viral life cycle is entirely dependent on the integrity and processing of this RNA, it serves as a critical target for antiviral intervention. Drugs such as Favipiravir act as nucleoside analogues that are incorporated into the nascent RNA strand to cause chain termination, while Baloxavir marboxil targets the polymerase's ability to process the RNA by inhibiting the cap-snatching mechanism necessary for viral protein expression (Source: FDA, 2021; PubChem, CID 492405).

Other names

Influenza B genomic RNAIBV vRNAInfluenza B virus genomeInfluenza B virus segmented RNA

Inhibition of the viral RNA-dependent RNA polymerase (RdRp) complex which utilizes the viral RNA as a template; nucleoside analog-mediated chain termination or lethal mutagenesis; and inhibition of the cap-dependent endonuclease activity (cap-snatching) required for viral mRNA synthesis.