A novel lncRNA DFRV plays a dual function in influenza A virus infection

• Published in: Frontiers in microbiology Vol. 14; p. 1171423
• Main Authors: Wang, Keyu, Gong, Meiliang, Zhao, Sumin, Lai, Chengcai, Zhao, Lingna, Cheng, Sijie, Xia, Min, Li, Yuru, Wang, Kun, Sun, Heqiang, Zhu, Pingjun, Zhou, Yu, Ao, Qiangguo, Deng, Xinli
• Format: Journal Article
• Language: English
• Published: Switzerland Frontiers Media S.A 25.05.2023
• Subjects: influenza A virus; innate immune; long noncoding RNA; Microbiology; proinflammatory signaling; viral replication; viral replication; long noncoding RNA; innate immune; proinflammatory signaling; influenza A virus
• ISSN: 1664-302X; 1664-302X
• DOI: 10.3389/fmicb.2023.1171423

Long noncoding RNAs (lncRNAs) have been associated with a variety of biological activities, including immune responses. However, the function of lncRNAs in antiviral innate immune responses are not fully understood. Here, we identified a novel lncRNA, termed dual function regulating influenza virus (DFRV), elevating in a dose- and time-dependent manner during influenza A virus (IAV) infection, which was dependent on the NFκB signaling pathway. Meanwhile, DFRV was spliced into two transcripts post IAV infection, in which DFRV long suppress the viral replication while DFRV short plays the opposite role. Moreover, DFRV regulates IL-1β and TNF-α via activating several pro-inflammatory signaling cascades, including NFκB, STAT3, PI3K, AKT, ERK1/2 and p38. Besides, DFRV short can inhibit DFRV long expression in a dose-dependent manner. Collectively, our studies reveal that DFRV may act as a potential dual-regulator to preserve innate immune homeostasis in IAV infection.