HIV-1 Activator

Panobinostat (LBH589; NVP-LBH589) is a potent and orally active non-selective HDAC inhibitor, and has antineoplastic activities. Panobinostat induces HIV-1 virus production even at low concentration range 8-31 nM, stimulates HIV-1 expression in latently infected cells. Panobinostat induces cell apoptosis and autophagy. Panobinostat can be used for the study of refractory or relapsed multiple myeloma.

ONX-0914 (PR-957) is a selective inhibitor of low-molecular mass polypeptide-7 (LMP7), the chymotrypsin-like subunit of the immunoproteasome. ONX-0914 blocks cytokine production and attenuates progression of experimental arthritis. ONX-0914 is a noncompetitive irreversible inhibitor of the mycobacterial proteasome (K_i=5.2 μM). ONX-0914 reactivates latent HIV-1 through p-TEFb activation mediated by HSF-1.

BRD3308 is a highly selective HDAC3 inhibitor with an IC₅₀ of 54 nM. BRD3308 is 23-fold selectivity for HDAC3 over HDAC1 (IC₅₀ of 1.26 μM) or HDAC2 (IC₅₀ of 1.34 μM). BRD3308 suppresses pancreatic β-cell apoptosis induced by inflammatory cytokines or glucolipotoxic stress, and increases functional insulin release. BRD3308 activates HIV-1 transcription and disrupts HIV-1 latency.

Bromosporine, a chemical probe, is a potent BET inhibitor with an IC₅₀ value of 2.1 μM for PCAF. Bromosporine can arrest cell cycle and induce apoptosis in cancer cells. Bromosporine exhibits excellent antitumor activity in xenograft mice model when combined with 5-Fluorouracil (HY-90006). Bromosporine can increase CDK9 T-loop phosphorylation in HIV-1 latency models, resulting the protection of reactivate HIV-1 replication from latency. Bromosporine can be used to research colorectal cancer, acute myeloid leukemia (AML) and AIDS.

Panobinostat lactate is a potent and orally active non-selective HDAC inhibitor. Panobinostat lactate has antineoplastic activities. Panobinostat lactate effectively disrupts HIV latency. Panobinostat lactate induces cell apoptosis and autophagy. Panobinostat lactate can be used for the study of refractory or relapsed multiple myeloma.

ONX-0914 (PR-957) TFA is a selective inhibitor of low-molecular mass polypeptide-7 (LMP7), the chymotrypsin-like subunit of the immunoproteasome. ONX-0914 TFA blocks cytokine production and attenuates progression of experimental arthritis. ONX-0914 TFA is a noncompetitive irreversible inhibitor of the mycobacterial proteasome (K_i=5.2 μM). ONX-0914 TFA reactivates latent HIV-1 through p-TEFb activation mediated by HSF-1.

PTACH (NCH-51) is a potent HDAC inhibitor with IC₅₀s of 48 nM, 32 nM, and 41 nM for HDAC1, HDAC4, and HDAC6, respectively. PTACH exerts potent growth inhibition against various cancer cells (EC₅₀s of 1.1-9.1 μM) .

Neuraminidase, arthrobacter ureafaciens is a neuraminidase derived from Arthrobacter ureafaciens. Neuraminidase, arthrobacter ureafaciens catalyzes the removal of sialic acid residues from cell surfaces and viral glycoconjugates. Neuraminidase, arthrobacter ureafaciens enhances HIV-1-mediated syncytium formation and promotes the viral binding and entry steps in the HIV-1 replication cycle.

Ciapavir (SBI-0953294) is a HIV-1 latency-reversing agent. Ciapavir reverses latent HIV-1 reservoir in vitro and in vivo without inducing systemic T cell activation or broad cytokine release. Ciapavir degrades cIAP1 and activates non-canonical NF-κB pathway. Ciapavir can be used for the research of HIV-1 infection.

XQ2 is a resveratrol (HY-16561) derivative and latency-reversing agent. XQ2 releases positive transcription elongation factor b (P-TEFb) from BRD4, thereby promoting Tat-dependent viral transcription. XQ2 reactivates latent HIV-1 via activating P-TEFb.