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 Resjournal_title
Antiviral researchauthors
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 Hdoi
10.1016/j.antiviral.2019.104555subject
Has Abstractpub_date
2019-09-01 00:00:00pages
104555eissn
0166-3542issn
1872-9096pii
S0166-3542(19)30100-7journal_volume
169pub_type
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