Abstract
ABSTRACT For many members of the Picornaviridae family, infection of cells results in a shutoff of host protein synthesis. For rhinoviruses and enteroviruses, the shutoff has been explained in part by the cleavage of eukaryotic initiation factor 4GI (eIF4GI), a component of the cap-binding protein complex eIF4F. The cleavage of eIF4GI is mediated by the virus-specific proteinase 2A pro and results in inhibition of cap-dependent, but not cap-independent, translation. The inhibition of host protein synthesis after infection with human rhinovirus 14 (HRV-14) lags behind the cleavage of eIF4GI. Recently, we discovered a functional homolog of eIF4GI, termed eIF4GII, and showed that cleavage of eIF4GII coincides with the shutoff of host cell protein synthesis after poliovirus infection (Gradi et al., Proc. Natl. Acad. Sci. USA 95:11089–11094, 1998). We wished to determine whether eIF4GII cleavage kinetics could also explain the lack of correlation between the kinetics of eIF4GI cleavage and the shutoff of host protein synthesis after rhinovirus infection. In this study, we examined the correlation between human rhinovirus-induced shutoff of host protein synthesis and cleavage of eIF4GI and eIF4GII. In HRV-14-infected HeLa cells, almost no intact eIF4GI could be detected by 4 h postinfection, while only 4% of eIF4GII was cleaved at this time. By 6 h, however, 67% of eIF4GII was cleaved, and this cleavage coincided with a significant (60%) decline of host translation. These results suggest that cleavage of both eIF4GI and eIF4GII is required for HRV-mediated inhibition of host cell protein synthesis and that the cleavage of eIF4GII is the rate-limiting step in the shutoff of host cell protein synthesis after rhinovirus infection.
References
50
Referenced
114
10.1128/jcm.34.5.1277-1279.1996
10.1128/mr.60.3.499-511.1996
10.1128/mcb.5.11.2913-2923.1985
10.1128/jvi.61.4.986-991.1987
10.1006/viro.1997.8761
- Borman A. M. Kirchweger R. Ziegler E. Rhoads R. E. Skern T. Kean K. M. eIF4G and its proteolytic cleavage products: effect on initiation of protein synthesis from capped, uncapped, and IRES-containing mRNAs.RNA 3 1997 186 196 / RNA / eIF4G and its proteolytic cleavage products: effect on initiation of protein synthesis from capped, uncapped, and IRES-containing mRNAs by Borman A. M. (1997)
10.1006/viro.1998.9172
10.1006/viro.1998.9171
10.1038/264807a0
10.1016/S0021-9258(19)75938-9
- Ehrenfeld E. Initiation of translation by picornavirus RNAs Translational control. Hershey J. W. B. Mathews M. B. Sonenberg N. 1996 549 573 Cold Spring Harbor Laboratory Press Plainview N.Y
10.1128/jvi.54.2.634-638.1985
10.1016/S0021-9258(18)33352-0
10.1073/pnas.93.11.5578
10.1021/bi00473a002
10.1128/MCB.18.1.334
10.1073/pnas.95.19.11089
10.1128/jvi.70.12.8444-8450.1996
10.1016/S0021-9258(17)39529-7
10.1093/emboj/17.24.7480
10.1128/jvi.69.12.7453-7460.1995
10.1128/jvi.61.9.2711-2718.1987
10.1074/jbc.270.37.21975
10.1016/S0021-9258(19)36499-3
10.1021/bi00080a033
10.1126/science.7939721
10.1128/jvi.62.11.4216-4223.1988
10.1128/MCB.15.9.4990
10.1128/jvi.54.2.643-645.1985
10.1093/emboj/16.4.844
10.1002/j.1460-2075.1996.tb00479.x
10.1128/jvi.63.12.5069-5075.1989
10.1146/annurev.mi.44.100190.003131
10.1038/371762a0
10.1002/j.1460-2075.1994.tb06370.x
10.1016/0042-6822(92)90693-J
10.1128/MCB.16.12.6870
10.1074/jbc.271.15.8983
10.1016/S0021-9258(17)39658-8
- Reed L. J. Muench H. A simple method of estimating fifty per cent endpoints.Am. J. Hyg. 27 1938 493 497 / Am. J. Hyg. / A simple method of estimating fifty per cent endpoints by Reed L. J. (1938)
10.1017/S1355838298971989
10.1128/mcb.10.3.1134-1144.1990
10.1016/S0092-8674(00)80268-8
- Sonenberg N. mRNA 5′ cap-binding protein eIF4E and control of cell growth Translational control. Hershey J. W. B. Mathews M. B. Sonenberg N. 1996 245 269 Cold Spring Harbor Laboratory Press Plainview N.Y
10.1073/pnas.75.10.4843
- Svitkin Y. V. and A. Gradi. Unpublished observations.
- Svitkin Y. V. A. Gradi and G. Belsham. Unpublished observations.
10.1016/S0021-9258(18)50080-6
10.1016/S0042-6822(95)90001-2
10.1128/jvi.69.6.3465-3474.1995
Dates
Type | When |
---|---|
Created | 5 years, 7 months ago (Dec. 31, 2019, 1:26 p.m.) |
Deposited | 3 years, 5 months ago (March 4, 2022, 10:50 p.m.) |
Indexed | 17 hours, 42 minutes ago (Aug. 29, 2025, 6:37 a.m.) |
Issued | 26 years, 4 months ago (April 1, 1999) |
Published | 26 years, 4 months ago (April 1, 1999) |
Published Print | 26 years, 4 months ago (April 1, 1999) |
@article{Svitkin_1999, title={Eukaryotic Initiation Factor 4GII (eIF4GII), but Not eIF4GI, Cleavage Correlates with Inhibition of Host Cell Protein Synthesis after Human Rhinovirus Infection}, volume={73}, ISSN={1098-5514}, url={http://dx.doi.org/10.1128/jvi.73.4.3467-3472.1999}, DOI={10.1128/jvi.73.4.3467-3472.1999}, number={4}, journal={Journal of Virology}, publisher={American Society for Microbiology}, author={Svitkin, Yuri V. and Gradi, Alessandra and Imataka, Hiroaki and Morino, Shigenobu and Sonenberg, Nahum}, year={1999}, month=apr, pages={3467–3472} }