CRISPR screening reveals a dependency on ribosome recycling for efficient SARS-CoV-2 programmed ribosomal frameshifting and viral replication.
CRISPR screening reveals a dependency on ribosome recycling for efficient SARS-CoV-2 programmed ribosomal frameshifting and viral replication.
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DOI:
10.1016/j.celrep.2023.112076
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发表时间:
2023-02-28
期刊:
影响因子:
8.8
通讯作者:
中科院分区:
文献类型:
--
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During translation of the genomic RNA of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative virus in the COVID-19 pandemic, host ribosomes undergo programmed ribosomal frameshifting (PRF) at a conserved structural element. Although PRF is essential for coronavirus replication, host factors that regulate this process have not yet been identified. Here we perform genome-wide CRISPR-Cas9 knockout screens to identify regulators of SARS-CoV-2 PRF. These screens reveal that loss of ribosome recycling factors markedly decreases frameshifting efficiency and impairs SARS-CoV-2 viral replication. Mutational studies support a model wherein efficient removal of ribosomal subunits at the ORF1a stop codon is required for frameshifting of trailing ribosomes. This dependency upon ribosome recycling is not observed with other non-pathogenic human betacoronaviruses and is likely due to the unique position of the ORF1a stop codon in the SARS clade of coronaviruses. These findings therefore uncover host factors that support efficient SARS-CoV-2 translation and replication. Programmed ribosomal frameshifting is essential for SARS-CoV-2 replication. Through genome-wide CRISPR screening, Rehfeld et al. find a requirement for ribosome recycling factors in efficient frameshifting and viral replication. The unique position of the ORF1a stop codon in SARS-CoV-2 necessitates the efficient removal of post-termination ribosomes to enable frameshifting of trailing ribosomes.
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DOI:
10.1261/rna.039792.113
发表时间:
2014-01
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Manickam N;Nag N;Abbasi A;Patel K;Farabaugh PJ
通讯作者:
Farabaugh PJ
DOI:
10.1093/emboj/19.8.1907
发表时间:
2000-04-17
期刊:
The EMBO journal
影响因子:
--
作者:
Ivanov IP;Matsufuji S;Murakami Y;Gesteland RF;Atkins JF
通讯作者:
Atkins JF
影响因子:
6.7
作者:
Irigoyen N;Firth AE;Jones JD;Chung BY;Siddell SG;Brierley I
通讯作者:
Brierley I
影响因子:
46.9
作者:
Doench JG;Fusi N;Sullender M;Hegde M;Vaimberg EW;Donovan KF;Smith I;Tothova Z;Wilen C;Orchard R;Virgin HW;Listgarten J;Root DE
通讯作者:
Root DE
影响因子:
14.9
作者:
Garofalo, Raffaella;Wohlgemuth, Ingo;Rodnina, Marina, V
通讯作者:
Rodnina, Marina, V