ZG36, a human Caseinolytic protease P (ClpP) agonist, non-selectively degrades respiratory chain complexes and reduces mitochondrial DNA, causing mitochondrial dysfunction and inducing leukemic cell death. Additionally, it inhibits the development of acute myeloid leukemia in a xenograft mouse model [1].

Sorafenib N-oxide is an active metabolite of sorafenib , an inhibitor of Raf-1, B-RAF, and receptor tyrosine kinases. Sorafenib N-oxide inhibits FLT3 that contains the internal tandem duplication mutation (FLT3-ITD; Kd = 70 nM) and inhibits proliferation of MV4-11 acute myeloid leukemia (AML) cells expressing FLT3-ITD (IC50 = 25.8 nM). It is selective for AML cell lines containing FLT3-ITD over lines containing wild-type FLT3 (IC50s = 3.9-13.3 μM). Sorafenib N-oxide is also a linear-mixed inhibitor of the cytochrome P450 (CYP) isoform CYP3A4 (Ki = 15 μM in human liver microsomes).

Tpl2 kinase inhibitor is an inhibitor of tumor progression locus 2 (Tpl2; IC50= 0.05 μM).1It is selective for Tpl2 over MEK, p38 MAPK, Src, MK2, and PKC (IC50s = >40, 180, >400, 110, and >400 μM, respectively). Tpl2 kinase inhibitor inhibits LPS-induced TNF-α production in isolated human monocytes and whole blood (IC50s = 0.7 and 8.5 μM, respectively). It enhances differentiation induced by calcitriol in HL-60 and U937 leukemia cells when used at a concentration of 5 μM.2Tpl2 kinase inhibitor (5 μM) inhibits the proliferation of KG-1a leukemia cells.3 1.Garvin, L.K., Green, N., Hu, Y., et al.Inhibition of Tpl2 kinase and TNF-α production with 1,7-naphthyridine-3-carbonitriles: Synthesis and structure-activity relationshipsBioor. Med. Chem. Lett.15(23)5288-5292(2005) 2.Wang, X., and Studzinski, G.P.Expression of MAP3 kinase COT1 is up-regulated by 1,25-dihydroxyvitamin D3 in parallel with activated c-jun during differentiation of human myeloid leukemia cellsJ. Steroid. Biochem. Mol. Biol.121(1-2)395-398(2010) 3.Wang, X., Gocek, E., Novik, V., et al.Inhibition of Cot1/Tlp2 oncogene in AML cells reduces ERK5 activation and up-regulates p27Kip1 concomitant with enhancement of differentiation and cell cycle arrest induced by silibinin and 1,25-dihydroxyvitamin D3Cell Cycle9(22)4542-4551(2010)

Ara-G is an analog of the nucleoside guanosine and an active metabolite of nelarabine .1,2 Ara-G accumulates in T lymphoblasts and malignant T-lymphoid cells, where it is phosphorylated to produce ara-GTP and incorporated into the DNA.3,1 Ara-G inhibits DNA replication by 92% after 30 minutes when used at a concentration of 50 μM in CEM cells, which are used as a model for human T lymphoblasts.1 It also halts the cell cycle at the sub-G1 phase and induces apoptosis in CEM cells.3 Syngeneic bone marrow containing 6C3HED tumor cells treated with ara-G (100 mM) ex vivo prior to transplantation increases survival of lethally irradiated mice and induces reconstitution of lymphoid, myeloid, and erythroid cell linages.4References1. Leanza, L., Miazzi, C., Ferraro, P., et al. Activation of guanine-β-D-arabinofuranoside and deoxyguanosine to triphosphates by a common pathway blocks T lymphoblasts at different checkpoints. Exp. Cell Res. 316(20), 3443-3453 (2010).2. Lambe, C.U., Averett, D.R., Paff, M.T., et al. 2-Amino-6-methoxypurine arabinoside: An agent for T-cell malignancies. Cancer Res. 55(15), 3352-3356 (1995).3. Rodriguez, C.O., Jr., Stellrecht, C.M., and Gandhi, V. Mechanisms for T-cell selective cytotoxicity of arabinosylguanine. Blood 102(5), 1842-1848 (2003).4. Kurtzberg, J. Guanine arabinoside as a bone marrow-purging agent. Ann. N.Y. Acad. Sci 685(1), 225-236 (1993). Ara-G is an analog of the nucleoside guanosine and an active metabolite of nelarabine .1,2 Ara-G accumulates in T lymphoblasts and malignant T-lymphoid cells, where it is phosphorylated to produce ara-GTP and incorporated into the DNA.3,1 Ara-G inhibits DNA replication by 92% after 30 minutes when used at a concentration of 50 μM in CEM cells, which are used as a model for human T lymphoblasts.1 It also halts the cell cycle at the sub-G1 phase and induces apoptosis in CEM cells.3 Syngeneic bone marrow containing 6C3HED tumor cells treated with ara-G (100 mM) ex vivo prior to transplantation increases survival of lethally irradiated mice and induces reconstitution of lymphoid, myeloid, and erythroid cell linages.4 References1. Leanza, L., Miazzi, C., Ferraro, P., et al. Activation of guanine-β-D-arabinofuranoside and deoxyguanosine to triphosphates by a common pathway blocks T lymphoblasts at different checkpoints. Exp. Cell Res. 316(20), 3443-3453 (2010).2. Lambe, C.U., Averett, D.R., Paff, M.T., et al. 2-Amino-6-methoxypurine arabinoside: An agent for T-cell malignancies. Cancer Res. 55(15), 3352-3356 (1995).3. Rodriguez, C.O., Jr., Stellrecht, C.M., and Gandhi, V. Mechanisms for T-cell selective cytotoxicity of arabinosylguanine. Blood 102(5), 1842-1848 (2003).4. Kurtzberg, J. Guanine arabinoside as a bone marrow-purging agent. Ann. N.Y. Acad. Sci 685(1), 225-236 (1993).

1. Kirenol (Kirel) has anti-oxidant, anti-inflammatory, anti-allergic, and anti-arthritic activities. 2. Kirenol is effective against gram-positive bacteria. 3. Kirenol possesses antitumor action on human chronic myeloid leukemia K562 cells in vitro. 4. Kirenol is capable of promoting osteoblast differentiation in MC3T3-E1 cells through activation of the BMP and Wnt/β-catenin signaling pathways. 5. Kirenol treatment reduces pro-inflammatory cytokine secretion, increases anti-inflammatory cytokine production, inhibits cell proliferation and induces apoptosis of CII-specific lymphocytes in vitro.

EP4 antagonist 14 is a prostaglandin E2 receptor subtype EP4 antagonist, demonstrating an IC50 of 1.1 nM in a HEK293 human receptor reporter assay and blocking β-arrestin recruitment due to PGE2 with an IC50 of 0.9 nM. At 10 µM, it reduces PGE2-stimulated mRNA levels of Il-4, macrophage mannose receptor 1 (Mrc1), chitinase-like protein 3 (Chil3), chemokine (C-X-C) motif ligand 1 (Cxcl1), triggering receptor expressed on myeloid cells 2 (Trem2), and arginase-1 (Arg1) in RAW 264.7 macrophages. When used at 30 mg/kg per day alongside anti-PD-1 antibodies, it curbs tumor growth and enhances CD8+ T cell infiltration in tumors using a CT26 murine colon cancer model.

Solasodine (Purapuridine)(Purapuridine) is a poisonous alkaloid chemical compound that occurs in plants of the Solanaceae family. Solasodine showed selective cytotoxicity against cervical cancer cell line (HeLa) and human myeloid leukemia cell line (U937).

Nargenicin is a macrolide antibiotic that selectively inhibits the growth of S. aureus, methicilin resistant S. aureus (MRSA), and M. luteus (MICs = 0.6, 0.3, and 2.5 μg/ml, respectively) over a panel of 11 Gram-positive and Gram-negative bacteria (MICs = >80 μg/ml). [1] It dose-dependently inhibits S. aureus DnaE in the presence of DNase I-activated DNA and E. coli DnaE when used at concentrations of 0.00001-0.1 and 0.01-100 μg/mL, respectively. [2] In murine BV-2 microglial cells, nargenicin (1 μM) inhibits cytokine expression and nitric oxide production induced by LPS.[3] Nargenicin (200 μM), when used in combination with 1,25-dihydroxyvitamin D3 or all-trans retinoic acid , reduces cell proliferation by 37-47% and increases cell differentiation by 82-85% in HL-60 human myeloid leukemia cells.[4]

CML-IN-1, also known as compound 7 and compound 4, is a potent anticancer agent that demonstrates a strong induced-apoptosis effect in the human chronic myeloid leukemia (CML) cell line K562. It diminishes protein phosphorylation within the PI3K/Akt signaling pathway to exert its effects and suppresses cell proliferation through the inhibition of the MEK/ERK signaling pathway in colorectal cancer [1] [2].

HA-14-1, a small molecule, binds the surface pocket of Bcl-2 proteins (IC50= ~ 9 µM), including Bcl-xl and Bcl-W, and disrupts their interaction with the Bak peptide. This action induces apoptosis by activating Apaf-1 and caspase-9 and -3. Additionally, HA-14-1 effectively induces apoptosis in human acute myeloid leukemia (HL-60) cells, with a 50 µM concentration resulting in a 90% loss of cell viability.

PC-046 is a potent tubulin-binding agent, which was originally identified for development based on selective activity in deleted in pancreas cancer locus 4 (DPC4/SMAD4) deficient tumors. PC-046 has growth inhibitory activity in a variety of tumor types in vitro, and efficacy in SCID mice was shown in human tumor xenografts of MV-4-11 acute myeloid leukemia, MM.1S multiple myeloma, and DU-145 prostate cancer. Pharmacokinetic studies demonstrated relatively high oral bioavailability (71 %) with distribution to both plasma and bone marrow. No myelosuppression was seen in non-tumor bearing SCID mice given a single dose just under the acute lethal dose. The COMPARE algorithm in the NCI-60 cell line panel demonstrated that PC-046 closely correlated to other known tubulin destabilizing agents (correlation coefficients ≈0.7 for vincristine and vinblastine). Mechanism of action studies showed cell cycle arrest in metaphase and inhibition of tubulin polymerization. Overall, these studi......

Rotundifuran is extracted from the fruit of Vitex rotundifolia. Rotundifuran inhibits cell cycle progression and induces apoptosis in human myeloid leukemia cells.

G150 inhibited interferon expression triggered by DSDNA with IC50 of 10.2 nM.G150 is an effective and highly selective inhibitor of human cyclic GMP-AMP synthase (H-CGAS).

Ulocuplumab (BMS-936564) is a fully human anti-CXCR4 IgG4 antibody.Ulocplumab exhibits antitumor activity in acute myeloid leukemia (AML), non-Hodgkin's lymphoma (NHL), and multiple myeloma transplantation models.Ulocplumab inhibits the migration of chronic lymphocytic leukemia (CLL) cells under CXCR4 activation, induces apoptosis, and inhibits the growth and migration of cancer cells. Ulocplumab inhibits CXCL12-mediated chronic lymphocytic leukemia (CLL) cell migration in response to CXCR4 activation and induces apoptosis.)

Enavatuzumab (PDL192; ABT-361) is a humanized IgG1 monoclonal antibody designed to target the TWEAK receptor (TweakR), a protein involved in various cellular responses through its interaction with its natural ligand, TWEAK (Fn14; TNFRSF12A). By directly engaging TweakR signaling and promoting antibody-dependent cell-mediated cytotoxicity (ADCC), enavatuzumab effectively inhibits tumor growth. It also recruits and activates myeloid effector cells to destroy tumor cells. Enavatuzumab has demonstrated the ability to suppress the proliferation of a range of human TweakR-positive cancer cell lines and tumorigenic models both in vitro and in vivo [1] [2].

EVT801 is an orally active, selective VEGFR-3 inhibitor (IC 50 = 11 nM) with demonstrated antitumor properties. It effectively suppresses VEGF-C-induced human endothelial cell proliferation and tumor (lymphatic) angiogenesis in mouse models. Moreover, EVT801 reduces tumor hypoxia and the production of immunosuppressive cytokines (CCL4, CCL5) and myeloid-derived suppressor cells (MDSC), enhancing the efficacy of immune checkpoint therapy (ICT). This synergy results in improved ICT response rates and more potent anticancer effects in cancer mouse models.