Convergence of Kaposi's sarcoma-associated herpesvirus reactivation with Epstein-Barr virus latency and cellular growth mediated by the notch signaling pathway in coinfected cells.
Convergence of Kaposi's sarcoma-associated herpesvirus reactivation with Epstein-Barr virus latency and cellular growth mediated by the notch signaling pathway in coinfected cells.
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卡波西肉瘤相关疱疹病毒再激活与 Epstein-Barr 病毒潜伏期和共感染细胞中 Notch 信号通路介导的细胞生长的收敛。
DOI:
10.1128/jvi.00894-10
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发表时间:
2010
影响因子:
5.4
通讯作者:
Lukac,DavidM
中科院分区:
文献类型:
--
作者:
Spadavecchia,Sophia;Gonzalez-Lopez,Olga;Carroll,KylaDriscoll;Palmeri,Diana;Lukac,DavidM
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent of primary effusion lymphoma (PEL). All PEL cell lines are infected with KSHV, and 70% are coinfected with Epstein-Barr virus (EBV). KSHV reactivation from latency requires promoter-specific transactivation by the KSHV Rta protein through interactions with RBP-Jk (CSL), the cellular DNA-binding component of the Notch signal transduction pathway. EBV transformation of primary B cells requires EBV nuclear antigen 2 (EBNA-2) to interact with RBP-Jk to direct the latent viral and cellular gene expression program. Although KSHV Rta and EBV EBNA-2 both require RBP-Jk for transactivation, previous studies have suggested that RBP-Jk-dependent transactivators do not function identically. We have found that the EBV latent protein LMP-1 is expressed in less than 5% of KSHV+/EBV+PEL cells but is induced in an Rta-dependent fashion when KSHV reactivates. KSHV Rta transactivates the EBV latency promoters in an RBP-Jk-dependent fashion and forms a ternary complex with RBP-Jk on the promoters. In B cells that are conditionally transformed by EBV alone, we show that KSHV Rta complements a short-term EBNA-2 growth deficiency in an autocrine/paracrine manner. Complementation of EBNA-2 deficiency by Rta depends on RBP-Jk and LMP-1, and Rta transactivation is required for optimal growth of KSHV+/EBV+PEL lines. Our data suggest that Rta can contribute to EBV-driven cellular growth by transactivating RBP-Jk-dependent EBV latency genes. However, our data also suggest that EBNA-2 and Rta induce distinct alterations in the cellular proteomes that contribute to the growth of infected cells.
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DOI:
--
发表时间:
1985
期刊:
The American journal of pathology
影响因子:
--
作者:
Salisbury,BG;Falcone,DJ;Minick,CR
通讯作者:
Minick,CR
影响因子:
6.5
作者:
R. Mahley;T. Innerarity;Michael S. Brown;Y. K. Ho;J. Goldstein
通讯作者:
R. Mahley;T. Innerarity;Michael S. Brown;Y. K. Ho;J. Goldstein
DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Vijayagopal,P;Srinivasan,SR;Radhakrishnamurthy,B;Berenson,GS
通讯作者:
Berenson,GS
DOI:
--
发表时间:
2009
期刊:
Acta medica Scandinavica. Supplementum
影响因子:
--
作者:
G. Camejo;M. M. Cortez;F. López;R. Starosta;B. Mosquera;L. Socorro
通讯作者:
L. Socorro
影响因子:
20.1
作者:
T. B. Clarkson;H. Lofland
通讯作者:
H. Lofland