Dual effects of the novel ingenol derivatives on the acute and latent HIV-1 infections.

Abstract:

:The latent reservoir of HIV-1 in resting memory CD4+ T cells serves as a major barrier to curing HIV-1 infection. Reactivation of latent HIV-1 is proposed as a promising strategy for the clearance of the viral reservoirs. Because of the limitations of current latency reversal agents (LRAs), identification of new LRAs is urgently required. Here, we analyzed Euphorbia kansui extracts and obtained three ingenol derivative compounds named EK-1A, EK-5A and EK-15A. We found that ingenol derivatives can effectively reactivate latent HIV-1 at very low (nanomolar) concentrations in HIV latency model in vitro. Furthermore, ingenol derivatives exhibited synergy with other LRAs in reactivating latent HIV-1. We verified that EK-15A can promote latent HIV-1 reactivation in the ex vivo resting CD4+ T cells isolated from the peripheral blood of HIV-infected individuals on suppressive antiretroviral therapy. In addition, ingenol derivatives down-regulated the expression of cell surface HIV co-receptors CCR5 and CXCR4, therefore potentially preventing new infection of HIV-1. Our results indicated that the ingenol derivatives extracted from Euphorbia kansui have dual functions: reactivation of latent HIV-1 and inhibition of HIV-1 infection.

journal_name

Antiviral Res

journal_title

Antiviral research

authors

Yang H,Li X,Yang X,Lu P,Wang Y,Jiang Z,Pan H,Zhao L,Zhu Y,Khan IU,Shen Y,Lu H,Zhang T,Jiang G,Ma Z,Wu H,Zhu H

doi

10.1016/j.antiviral.2019.104555

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

104555

eissn

0166-3542

issn

1872-9096

pii

S0166-3542(19)30100-7

journal_volume

169

pub_type

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