Delcayre A X, Lotz M, Lernhardt W
California Institute of Biological Research, La Jolla.
J Virol. 1993 May;67(5):2918-21. doi: 10.1128/JVI.67.5.2918-2921.1993.
Early events of human B-lymphocyte infection by Epstein-Barr virus involve the virus binding to CD21, capping, and subsequent internalization of the virus-receptor complex. We show here that alpha interferon (IFN-alpha) inhibits the capping of Epstein-Barr virus-CD21 complexes. Synthetic peptides with the CD21 binding motif of IFN-alpha mimic IFN-alpha activity, suggesting that this effect may be mediated by IFN-alpha-CD21 interaction. Our findings demonstrate a novel and immediate mechanism of IFN-alpha action.
爱泼斯坦-巴尔病毒感染人类B淋巴细胞的早期事件包括病毒与CD21结合、形成帽状结构以及随后病毒-受体复合物的内化。我们在此表明,α干扰素(IFN-α)可抑制爱泼斯坦-巴尔病毒-CD21复合物的帽状结构形成。具有IFN-α的CD21结合基序的合成肽模拟了IFN-α的活性,提示这种效应可能由IFN-α与CD21的相互作用介导。我们的发现证明了IFN-α作用的一种新的直接机制。