diABZI STING agonist-1 (Tautomerism) (diABZI STING agonist (Compound 3)) is a selective stimulator of interferon genes (STING) receptor agonist, with EC50s of 130, 186 nM for human and mouse, respectively.

Lenacapavir (GS-6207) is a potent capsid-targeting inhibitor of HIV replication. Lenacapavir shows anti-HIV activity with an EC50 of 100 pM in MT-4 cells.

GSK-LSD1, an LSD1 inhibitor, decreases food consumption and body weight while enhancing insulin sensitivity and glycemic regulation in murine obesity models. Additionally, it mitigates non-alcoholic fatty liver disease (NAFLD) and suppresses cytokine release induced by SARS-CoV-2 in COVID-19 peripheral blood mononuclear cells (PBMCs). Furthermore, GSK-LSD1 inhibits the proliferation and spread of cancer [1] [2] [3].

Cenicriviroc Mesylate is a dual CCR2/CCR5 antagonist, also inhibits both HIV-1 and HIV-2 with anti-inflammatory and antiinfective activity.

Rademikibart (CBP-201) is a human monoclonal antibody selective for IL-4Rα, exhibiting strong affinity with a KD of 20.7 pM for human IL-4Rα epitopes, without cross-reactivity to IL-4Rα from other species. It effectively inhibits IL-4 and IL-13-induced STAT6 signaling, TF-1 cell proliferation, and TARC production in PBMCs, showing promise for investigating moderate-to-severe Th2 inflammatory diseases [1].

sEH/FLAP-IN-1 (Compound 46A) serves as a dual inhibitor targeting both sEH and FLAP. It effectively suppresses 5-LOX product formation with an EC50 of 11 nM in SACM-stimulated PBMCs and also inhibits sEH activity (EC50: 18 nM) as well as thromboxane production. This compound is utilized in the study of inflammatory diseases [1].

Ganglioside GT1b is a trisialoganglioside that is characterized by having two sialic residues linked to the inner galactose unit. It binds to the neurotoxins botulinum toxin serotype A (BTxA), BTxA heavy chain, and tetanus toxin with IC50 values of 11, 0.74, and 7.2 μM, respectively.[1] Ganglioside GT1b-containing liposomes bind to the major coat protein VP1 from Merkel cell polyomavirus (MCPyV), which has been identified in Merkel cell carcinomas, identifying ganglioside GT1b as a putative MCPyV receptor. [2] Ganglioside GT1b decreases production of IL-6, IL-10, IgG, IgM, and IgA in human peripheral blood mononuclear cells (PBMCs) by 31.4, 30.5, 60, 59.5, and 58%, respectively, when used at a concentration of 10 μM [3] . Ganglioside GT1b mixture contains ganglioside GT1b molecular species with C18:1 and C20:1 sphingoid backbones.

O-Demethyl apremilast is an active metabolite of the phosphodiesterase 4 (PDE4) inhibitor apremilast .1It inhibits the activity of PDE4 isolated from U937 cells and LPS-induced TNF-α production in isolated human peripheral blood mononuclear cells (PBMCs; IC50s = 8.3 and 5.6 μM, respectively). O-Demethyl apremilast is also an oxidative degradation product of apremilast.2,3 1.Hoffmann, M., Kumar, G., Schafer, P., et al.Disposition, metabolism and mass balance of [14C]apremilast following oral administrationXenobiotica41(12)1063-1075(2011) 2.Lu, Y., Shen, X., Hang, T., et al.Identification and characterization of process-related substances and degradation products in apremilast: Process optimization and degradation pathway elucidationJ. Pharm. Biomed. Anal.14170-78(2017) 3.Bhole, R.P., Naksakhare, S.R., and Bonde, C.G.A stability indicating HPTLC method for apremilast and identification of degradation products using MS/MSJ. Pharm. Sci. & Res.11(5)1861-1869(2019)

TAK-220 is a selective and orally bioavailable CCR5 antagonist (IC50s: 3.5 nM and 1.4 nM for inhibition on the binding of RANTES and MIP-1α to CCR5, respectively).

Gardiquimod diTFA, an imidazoquinoline analog, is a TLR7/8 agonist. Gardiquimod diTFA could inhibit HIV-1 infection of macrophages and activated peripheral blood mononuclear cells (PBMCs). Gardiquimod diTFA specifically activates TLR7 when used at concentrations below 10 μM. Gardiquimod diTFA could function as both an immune system modifier and a reverse transcriptase inhibitor as a novel therapeutic agent to block systemic and mucosal transmission of HIV-1.[1] [2].

N6-(p-Methoxybenzyl)adenosine is an adenosine analog that shows in vitro antiproliferative activity in U87MG glioma cells and immunogenicity in isolated γδ T cells derived from stimulated peripheral blood mononuclear cells (PBMCs).

Mavorixafor (AMD-070) is an effective and selective antagonist of CXCR4, with an IC50 value of 13 nM against CXCR4 125I-SDF binding. Mavorixafor inhibits the replication of T-tropic HIV-1 (NL4.3 strain) in MT-4 cells (IC50 = 1 nM) and PBMCs (IC50 = 9 nM).

Compound A, a potent TLR8 agonist, exhibits an EC50 of 0.052 µM and promotes the production of IL-12p40 in human PBMCs with an EC50 of 0.031 µM. This compound is applicable for research in virus resistance, infection resistance, autoimmunity, and tumor studies [1].

M199, a novel inhibitor of TLR3/9 activation, induces secretion of IL-6, IL-8 and TNFalpha in human PBMCs.

ICeD-2, an inducer of cell death, effectively induces the killing of HIV-1 infected cells, a process reliant on HIV-1 protease activity. It significantly inhibits the hydrolysis of Gly-Pro-AMC by dipeptidyl peptidases DPP8 and DPP9, and robustly stabilizes DPP9 in peripheral blood mononuclear cells (PBMCs) [1].

ML604440 is a cell permeable proteasome β1i (LMP2) subunit inhibitor.

Tenofovir exalidex (CMX 157) is a lipid-conjugated acyclic nucleotide analog of Tenofovir, demonstrating efficacy against wild-type and antiretroviral-resistant HIV strains, including those resistant to multiple nucleoside/nucleotide analogs. It effectively inhibits all major HIV-1 and HIV-2 subtypes in fresh human PBMCs, as well as all evaluated HIV-1 strains in monocyte-derived macrophages, displaying EC50 values between 0.2 and 7.2 nM. Oral administration of CMX157 shows no apparent toxicity. Additionally, Tenofovir exalidex exhibits antiviral properties against HBV.

Cenicriviroc (TAK-652) is an orally active, dual antagonist of CCR2/CCR5. It also inhibits both HIV-1 and HIV-2, and displays potent anti-infective and anti-inflammatory activity.

Pomalidomide (CC-4047) inhibits TNF-α release in LPS stimulated human PBMCs (IC50: 13 nM). It is an anti-angiogenic agent and an immunomodulator.

Mavorixafor trihydrochloride is a selective and orally available CXCR4 antagonist (IC50: 13 nM against CXCR4 125I-SDF binding) and also inhibits the replication of T-tropic HIV-1 (NL4.3 strain) in MT-4 cells and PBMCs (IC50s: 1 and 9 nM).

Dolutegravir RR Isomer is an isomer of Dolutegravir -- a second generation HIV-1 integrase strand transfer inhibitor. Dolutegravir has been shown to potently inhibit HIV replication in cells such as peripheral blood mononuclear cells (PBMCs), MT-4 cells and CIP4 cells infected with a self-inactivating PHIV lentiviral vector.

TLR4 inhibitor. Inhibits LPS-induced NF-κB activation in HEK293 cells (IC50 = 2.4 μg/mL). Also inhibits LPS-induced cytokine production and procoagulant effects in PBMCs and HUVECs. Prolongs survival in a mouse septic shock model.

d2T, a nucleoside analog of thymidine, exhibits antiviral activity by inhibiting HIV replication in infected human peripheral blood mononuclear cells (PBMCs; EC50 = 0.17 µM). Additionally, 3′-deoxy Thymidine at concentrations of 1, 3, 10, or 30 µM significantly decreases viral plaque formation in CV-1 cells infected with herpes simplex virus 1 (HSV-1).

M04 acts as a stimulator of interferon genes (STING) agonist, effectively inducing IFN reporter gene expression in HEK293T cells equipped with wild-type human STING. Its activity is specific, not affecting HEK293T cells with the R71H-G230A-R293Q (HAQ) human STING variant or mouse RAW 264.7 cells, showcasing allelic- and species-dependent effects at a concentration of 75 µM. This compound also stimulates the production of TNF-α, IL-10, IL-1β, and IL-12p70 in human peripheral blood mononuclear cells (PBMCs). At 50 µM, M04 enhances human monocyte-derived dendritic cells' expression of HLA-DR (MHC class II receptor) and co-stimulatory molecules CD40, CD80, and CD86, improving T cell cross-priming in an ex vivo assay.

(+)-Norglaucine shows cytotoxic activity toward the tumor cell lines B16-F10 (mouse melanoma), HepG2 (human hepatocellular carcinoma), K562 (human chronic myelocytic leukemia) and HL-60 (human promyelocytic leukemia) and non-tumor peripheral blood mononuc

IT1t dihydrochloride inhibits CXCL12/CXCR4 interaction with IC50 of 2.1 nM. IT1t dihydrochloride is an antagonist of CXCR4.

Obefazimod (ABX-464) is a potent anti-HIV agent. ABX464 inhibits HIV-1 replication in stimulated peripheral blood mononuclear cells (PBMCs) (IC50 : 0.1 μM - 0.5 μM)

Gardiquimod is a TLR7/8 agonist. When used at concentrations below 10 μM, Gardiquimod specifically activates TLR7. Gardiquimod could inhibit HIV-1 infection of macrophages and activated peripheral blood mononuclear cells.

INX-SM-6, a chemical compound, serves as a targeted delivery vehicle for anti-inflammatory agents and has shown efficacy in suppressing LPS-induced IL-1β production in human PBMCs [1].

PD-1/PD-L1-IN-31 is a potent inhibitor of PD-1/PD-L1 (IC50=2.2 nM) that enhances IFN-γ secretion and activates the immune response of peripheral blood mononuclear cells (PBMCs), resulting in the inhibition of tumor cells [1].

BMSpep-57, a potent macrocyclic peptide inhibitor, competitively disrupts the PD-1/PD-L1 interaction, demonstrating a significant inhibitory concentration (IC50) of 7.68 nM. It exhibits binding affinity towards PD-L1 with dissociation constants (Kd) of 19 nM and 19.88 nM in MicroScale Thermophoresis (MST) and Surface Plasmon Resonance (SPR) assays, respectively. This compound enhances T cell functionality by promoting Interleukin-2 (IL-2) production within Peripheral Blood Mononuclear Cells (PBMCs).

ODN D-SL03, a class C CpG oligonucleotide, effectively stimulates peripheral blood mononuclear cells (PBMCs) to produce high levels of IFN-α. It activates human B cells, NK cells, and mononuclear cells, elevating the expression of CD80, CD86, and HLA-DR on PBMC subsets' surface. Additionally, ODN D-SL03 impedes tumor growth. Its sequence: 5'-tcgcgaacgttcgccgcgttcgaacgcgg-3' [1].

IT1t inhibits CXCL12/CXCR4 interaction with an IC50 of 2.1 nM. is a potent CXCR4 antagonist.

Gnidimacrin activated HIV-1 replication and killed persistently-infected cells at picomolar concentrations. In addition to its potential to purge HIV-1 from latently infected cells, gnidimacrin potently inhibited a panel of HIV-1 R5 virus infection of peripheral blood mononuclear cells (PBMCs) at an average concentration lower than 10 pM. These results suggest that gnidimacrin could activate latent HIV-1, specifically kill HIV-1 persistently infected cells, and inhibit R5 viruses at picomolar concentrations

Boromycin is a boron-containing macrolide antibiotic that has been found in Streptomyces. Boromycin inhibits growth of B. subtilis (MIC = 0.05 μg/ml) and induces efflux of potassium ions from B. subtilis without affecting Na+/K+-ATPase activity. It decreases the synthesis of protein, RNA, and DNA in B. subtilis when used at a concentration of 0.05 μg/ml. It inhibits the growth of B. halodurans (MIC = 10 ng/ml) and inhibits the futalosine pathway of menaquinone synthesis in B. halodurans. Boromycin (3.4 nM) reverses bleomycin-induced cell cycle arrest at the G2 phase in Jurkat cells. It inhibits replication of the HIV-1 strains LAV-1 and RF and the HIV-2 strain LAV-2 in MT-4 cells (IC50s = 0.008, 0.11, and 0.007 μM, respectively). It also inhibits replication of a clinical isolate of HIV-1, strain KK-1, in MT-4 cells and peripheral blood mononuclear cells (PBMCs; IC50s = 0.14 and <0.1 μM, respectively).

Givinostat (ITF-2357) is a HDAC inhibitor with an IC50 of 198 and 157 nM for HDAC1 and HDAC3, respectively. Givinostat (ITF2357) suppresses total LPS-induced IL-1β production robustly compared with the reduction by ITF3056. At 25, 50, and 100 nM, Givinostat reduced IL-1β secretion more than 70%. Givinostat (ITF-2357) suppresses the production of IL-6 in PBMCs stimulated with TLR agonists as well as the combination of IL-12 plus IL-18. IL-6 secretion decreases to 50% at 50 nM Givinostat, but at 100 and 200 nM, there is no reduction[1]. As shown by the CCK-8 assay, Givinostat (ITF-2357) inhibits JS-1 cell proliferation in a concentration-dependent manner. Treatment with Givinostat ≥500 nM is associated with significant inhibition of JS-1 cell proliferation (P<0.01). Also, the cell inhibition rate significantly differs between the group cotreated with Givinostat ≥250 nM plus LPS and the group without LPS treatment (same Givinostat concentration) (P<0.05)[2]. Givinostat (ITF2357) at 10 mg/kg is used as a positive control and, as expected, reduced serum TNFα by 60%. Strikingly, pretreatment of ITF3056 starting at 0.1 mg/kg significantly reduces the circulating TNFα by nearly 90%. To achieve a significant increase in serum IL-1β production, a higher dose of LPS is injected (10 mg/kg), and blood is collected after 4 h. Similarly, when pretreated with lower doses of Givinostat (ITF-2357) (1 or 5 mg/kg), there is a 22% reduction for 1 mg/kg and 40% for 5 mg/kg[1]. [1]. Li S, et al. Specific inhibition of histone deacetylase 8 reduces gene expression and production of proinflammatory cytokines in vitro and in vivo. J Biol Chem. 2015 Jan 23;290(4):2368-78. [2]. Wang YG, et al. Givinostat inhibition of hepatic stellate cell proliferation and protein acetylation. World J Gastroenterol. 2015 Jul 21;21(27):8326-39. [3]. Leoni F, et al. The histone deacetylase inhibitor ITF2357 reduces production of pro-inflammatory cytokines in vitro and systemic inflammation in vivo. Mol Med. 2005 Jan-Dec;11(1-12):1-15.

Cathelicidin-2 (CATH-2) (128-153) is a synthetic antimicrobial peptide derived from amino acids 128-153 of chicken CATH-2, demonstrating activity against pathogens such as E. coli, S. aureus, S. enteritidis, and B. globigii in a dose-dependent manner. At a concentration of 40 µM, it induces hemolysis in chicken erythrocytes without exhibiting cytotoxicity towards human peripheral blood mononuclear cells (PBMCs). Additionally, it stimulates the production of the chemokine CCL2 and suppresses LPS-induced secretion of TNF-α, IL-6, IL-8, and IL-10 in human PBMCs.

EGFRvIII peptide, a synthetic peptide mirroring the EGFRvIII fusion junction—a tumor-specific, perpetually active EGFR variant missing amino acids 6-273 of the wild-type—binds to HLA-A*0201-positive T2 cells under MHC class I at 25 µg/ml. It enables antigen presentation in dendritic cells from human peripheral blood mononuclear cells (PBMCs), thus activating CD8+ cytotoxic T lymphocytes and prompting IFN-γ production. Administered at 15 µg/animal with the TLR5 agonist flagellin B, EGFRvIII peptide elevates CD8+ T cell numbers, lowers regulatory T cells (Tregs) in the brain, diminishes tumor volume, and extends survival in a GL261 glioblastoma mouse model.

Tenofovir diphosphate is an inhibitor of HIV reverse transcriptase (Kis = 0.022 and 1.55 μM for RNA and DNA, respectively) and hepatitis B virus (HBV) polymerase (Ki = 0.18 μM). It is selective for these enzymes over DNA polymerase α and β, as well as mitochondrial DNA polymerase γ (Kis = 5.2, 81.7, and 59.5 μM, respectively). Tenofovir diphosphate is formed intracellularly through phosphorylation of the prodrugs tenofovir and tenofovir disoproxil by nucleotide kinases. Increased levels of tenofovir diphosphate in isolated peripheral blood mononuclear cells (PBMCs) correlate with a decrease in the risk of simian HIV (SHIV) acquisition in a macaque model of rectal SHIV transmission.

PD-1/PD-L1-IN-25 is an inhibitor of PD-1/PD-L1 interaction (IC50: 16.17 nM) that effectively activates anti-tumor immunity of T cells in PBMCs. PD-1/PD-L1-IN-25 can be used to study cancer.

CAY10748 is an agonist of stimulator of interferon genes (STING; IC50= 0.3794 μM in a competition binding assay).1It activates STING in STING-expressing, but not STING knockout, THP-1 cells (EC50s = 0.287 and >100 μM, respectively, in a reporter assay). It induces phosphorylation of STING at the serine in position 366, as well as phosphorylation of TBK1 and IFN regulatory factor 3 (IRF3), indicating activation of the STING-TBK1-IRF3 signaling pathway. CAY10748 increases the secretion of IFN-β and the levels of chemokine (C-X-C motif) ligand 10 (CXCL10), and IL-6 in peripheral blood mononuclear cells (PBMCs) when used at a concentration of 10 μM. It also reduces tumor growth in a CT26 murine colon cancer model when administered at a dose of 0.15, but not 1.5, mg/kg. 1.Xi, Q., Wang, M., Jia, W., et al.Design, synthesis, and biological evaluation of amidobenzimidazole derivatives as stimulator of interferon genes (STING) receptor agonistsJ. Med. Chem.63(1)260-282(2019)

CC-90005 is a potent, selective and orally active inhibitor of protein kinase C-θ (PKC-θ), with an IC50 of 8 nM. CC-90005 shows selectivity for PKC-θ over PKC-δ (IC50=4440 nM). CC-90005 can inhibit T cell activation by IL-2 expression[1]. CC-90005 shows the exquisite selectivity of CC-90005, with IC50s for all other family members of >3 μM[1].CC-90005 is a moderate inhibitor of both CYP2C9 (IC50=8 μM) and CYP2C19 (IC50=5.9 μM) in human liver microsomes[1].CC-90005 inhibits IL-2 expression in LRS_WBC human PBMCs, with an IC50 of 0.15 μM[1].CC-90005 (1-10 μM; 24 h) inhibits T cell proliferation in PBMCs by 51% at 1 μM and 88% at 3 μM[1]. CC-90005 (3-30 mg/kg; p.o. twice daily for 4 days) significantly reduces the popliteal lymph node (PLN) size in a model of chronic T cell activation[1].CC-90005 (100 mg/kg; a single p.o.) significantly inhibits plasma and spleen IL-2 release by 51 and 54%, respectively[1].CC-90005 exhibits reasonable oral bioavailability (66 and 46%) and Cmax (1.18 and 1.2 μM) following oral administration (10 and 3 mg/kg) in rat and dog, respectively[1].CC-90005 exhibits the mean residence time (0.52 and 2.0 h), CL (69.1 and 20.5 mL/min/kg) and Vss (2.11 and 2.44 L/kg) following intravenous administration (2 and 1 mg/kg) in rat and dog, respectively[1]. [1]. Papa P, et, al. Discovery of the Selective Protein Kinase C-θ Kinase Inhibitor, CC-90005. J Med Chem. 2021 Aug 26;64(16):11886-11903.

NOD2 antagonist 1 (compound 32) is an effective and selective NOD2 antagonist (IC50: 5.23μM). NOD2 antagonist 1 in THP-1 cells repress Muramyl DiDP (MDP) -induced IL-8 secretion. NOD2 antagonist 1 in PBMCs cells inhibits MDP-induced elevation of IL-6, IL-10 and TNF-α.

TAK-779 (Takeda 779) is an antagonist of chemokine receptor 5 (CCR5), CCR2b, and CXC chemokine receptor 3 (CXCR3).

HOXB7 (8-25), a peptide fragment derived from homeobox B7 (HOXB7)—a key controller of cell growth and oncogene activator—facilitates antigen presentation when pulsed onto dendritic cells obtained from human peripheral blood mononuclear cells (PBMCs). This process promotes the activation and interferon-gamma (IFN-γ) production by CD4+ helper T cells, triggering targeted and broad-spectrum antitumor responses.

CK176 is a capsid targeted inhibitor of HIV-1 replication. CK176 shows an 11-fold improvement over I-XW-053 in blocking HIV-1 replication in primary human peripheral blood mononuclear cells (PBMCs).

BMSpep-57 hydrochloride, a potent macrocyclic peptide, competitively inhibits PD-1/PD-L1 interaction, exhibiting an IC50 value of 7.68 nM. It binds to PD-L1 with dissociation constants (Kds) of 19 nM and 19.88 nM as determined by MST and SPR assays, respectively. This compound enhances T cell functionality by promoting IL-2 production in PBMCs[1].

PROTAC IRAK4 Degrader-2 (Compound 9) is a PROTAC-based degrader that potently reduces IRAK4 levels, achieving a DC50 of 151 nM in peripheral blood mononuclear cells (PBMCs). It also notably decreases IRAK4 protein levels with a DC50 of 36 nM in the same cell type and inhibits several cytokines in PBMCs [1].

Dolutegravir SR Isomer is an isomeric derivative of Dolutegravir -- a second generation HIV-1 integrase strand transfer inhibitor. Dolutegravir has been shown to potently inhibit HIV replication in cells such as peripheral blood mononuclear cells (PBMCs), MT-4 cells and CIP4 cells infected with a self-inactivating PHIV lentiviral vector.

SMU127 is an agonist of the toll-like receptor 1/2 (TLR1/2) heterodimer.1It induces NF-κB signaling in cells expressing human TLR2 (EC50= 0.55 μM) but not cells expressing human TLR3, -4, -5, -7, or -8 when used at concentrations ranging from 0.1 to 100 μM. SMU127 induces the production of TNF-α in isolated human peripheral blood mononuclear cells (PBMCs) when used at concentrations ranging from 0.01 to 1 μM.In vivo, SMU127 (0.1 mg/animal) reduces tumor volume in a 4T1 murine mammary carcinoma model. 1.Chen, Z., Cen, X., Yang, J., et al.Structure-based discovery of a specific TLR1-TLR2 small molecule agonist from the ZINC drug library databaseChem. Commun. (Camb.)54(81)11411-11414(2018)