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-Structure paper
タイトル | Structural basis for the inhibition of HTLV-1 integration inferred from cryo-EM deltaretroviral intasome structures. |
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ジャーナル・号・ページ | Nat Commun, Vol. 12, Issue 1, Page 4996, Year 2021 |
掲載日 | 2021年8月17日 |
著者 | Michal S Barski / Teresa Vanzo / Xue Zhi Zhao / Steven J Smith / Allison Ballandras-Colas / Nora B Cronin / Valerie E Pye / Stephen H Hughes / Terrence R Burke / Peter Cherepanov / Goedele N Maertens / |
PubMed 要旨 | Between 10 and 20 million people worldwide are infected with the human T-cell lymphotropic virus type 1 (HTLV-1). Despite causing life-threatening pathologies there is no therapeutic regimen for this ...Between 10 and 20 million people worldwide are infected with the human T-cell lymphotropic virus type 1 (HTLV-1). Despite causing life-threatening pathologies there is no therapeutic regimen for this deltaretrovirus. Here, we screened a library of integrase strand transfer inhibitor (INSTI) candidates built around several chemical scaffolds to determine their effectiveness in limiting HTLV-1 infection. Naphthyridines with substituents in position 6 emerged as the most potent compounds against HTLV-1, with XZ450 having highest efficacy in vitro. Using single-particle cryo-electron microscopy we visualised XZ450 as well as the clinical HIV-1 INSTIs raltegravir and bictegravir bound to the active site of the deltaretroviral intasome. The structures reveal subtle differences in the coordination environment of the Mg ion pair involved in the interaction with the INSTIs. Our results elucidate the binding of INSTIs to the HTLV-1 intasome and support their use for pre-exposure prophylaxis and possibly future treatment of HTLV-1 infection. |
リンク | Nat Commun / PubMed:34404793 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.0 - 3.5 Å |
構造データ | EMDB-13075, PDB-7ouf: EMDB-13076, PDB-7oug: EMDB-13077, PDB-7ouh: |
化合物 | ChemComp-ZN: ChemComp-MG: ChemComp-1L0: ChemComp-HOH: ChemComp-RLT: ChemComp-KLQ: |
由来 |
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キーワード | VIRAL PROTEIN / STLV-1 intasome / integrase strand-transfer inhibitor / HTLV / raltegravir / STLV-intasome / raltegravir. / integrase / intasome / STLV / integration / strand-transfer inhibitors / INSTI / bictegravir / BIC / drug |