論文 - 詳細
| RRC ID | 77417 |
|---|---|
| 著者 | Masuda T, Sato Y, Huang YL, Koi S, Takahata T, Hasegawa A, Kawai G, Kannagi M. |
| タイトル | Fate of HIV-1 cDNA intermediates during reverse transcription is dictated by transcription initiation site of virus genomic RNA. |
| ジャーナル | Sci Rep |
| Abstract |
Retroviral reverse transcription is accomplished by sequential strand-transfers of partial cDNA intermediates copied from viral genomic RNA. Here, we revealed an unprecedented role of 5'-end guanosine (G) of HIV-1 genomic RNA for reverse transcription. Based on current consensus for HIV-1 transcription initiation site, HIV-1 transcripts possess a single G at 5'-ends (G1-form). However, we found that HIV-1 transcripts with additional Gs at 5'-ends (G2- and G3-forms) were abundantly expressed in infected cells by using alternative transcription initiation sites. The G2- and G3-forms were also detected in the virus particle, although the G1-form predominated. To address biological impact of the 5'-G number, we generated HIV clone DNA to express the G1-form exclusively by deleting the alternative initiation sites. Virus produced from the clone showed significantly higher strand-transfer of minus strong-stop cDNA (-sscDNA). The in vitro assay using synthetic HIV-1 RNAs revealed that the abortive forms of -sscDNA were abundantly generated from the G3-form RNA, but dramatically reduced from the G1-form. Moreover, the strand-transfer of -sscDNA from the G1-form was prominently stimulated by HIV-1 nucleocapsid. Taken together, our results demonstrated that the 5'-G number that corresponds to HIV-1 transcription initiation site was critical for successful strand-transfer of -sscDNA during reverse transcription. |
| 巻・号 | 5 |
| ページ | 17680 |
| 公開日 | 2015-12-3 |
| DOI | 10.1038/srep17680 |
| PII | srep17680 |
| PMID | 26631448 |
| PMC | PMC4668388 |
| MeSH | DNA, Complementary / genetics* HEK293 Cells / virology HIV-1 / genetics* HIV-1 / pathogenicity Humans Nucleocapsid Proteins / genetics Nucleocapsid Proteins / metabolism RNA, Viral / genetics* Reverse Transcription* Transcription Initiation Site* |
| IF | 3.998 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | News |
| 各媒体での言及数の合計 | 4 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 遺伝子材料 | CSII-CMV-MCS (RDB04377) |