Troxler D H, Boyars J K, Parks W P, Scolnick E M
J Virol. 1977 May;22(2):361-72. doi: 10.1128/JVI.22.2.361-372.1977.
The genome of the Friend strain of the spleen focus-forming virus (SFFV) has been analyzed by molecular hybridization. SFFV is composed of genetic sequences homologous to Friend type C helper virus (F-MuLV) and SFFV-specific sequences not present in F-MuLV. These SFFV-specific sequences are present in both the Friend and Rauscher strains of murine erythroleukemia virus. The SFFV-specific sequences are partially homologous to three separate strains of mouse xenotropic virus but not to several cloned mouse ecotropic viruses. Thus, the Friend strain of SFFV appears to be a recombinant between a portion of the F-MuLV genome and RNA sequences that are highly related to murine xenotropic viruses. The implications of the acquisition of the xenotropic virus-related sequences are discussed in relation to the leukemogenicity of SFFV, and a model for the pathogenicity of other murine leukemia-inducing viruses is proposed.
已通过分子杂交分析了脾集落形成病毒(SFFV)Friend株的基因组。SFFV由与Friend C型辅助病毒(F-MuLV)同源的遗传序列和F-MuLV中不存在的SFFV特异性序列组成。这些SFFV特异性序列存在于鼠红细胞白血病病毒的Friend株和Rauscher株中。SFFV特异性序列与三株不同的小鼠嗜异性病毒部分同源,但与几株克隆的小鼠亲嗜性病毒不同源。因此,SFFV的Friend株似乎是F-MuLV基因组的一部分与与小鼠嗜异性病毒高度相关的RNA序列之间的重组体。本文讨论了获得嗜异性病毒相关序列对SFFV致白血病性的影响,并提出了其他鼠白血病诱导病毒的致病模型。