EM-800 is a high affinity ligand for estrogen receptor-α (ERα), the prodrug of EM-652. EM-800 independently inhibited the growth of E1-stimulated ZR-75-1 xenograft tumors in nude mice.
LXY6090 is a HIF-1 inhibitor. LXY6090 inhibited the activity of HIF-1 and downregulated the protein level of HIF-1α in breast cancer cells. LXY6090 showed in vivo anticancer efficacy by decreasing the HIF-1α expression in nude mice bearing MX-1 tumor xeno
YD277 is a small molecule derived from ML264, a KLF5 inhibitor that elicits cytotoxic effects in colon cancer cell lines. YD277 significantly induced G1 cell cycle arrest and apoptosis in MDA-MB-231 and MDA-MB-468 TNBC cells, independent of KLF5 inhibitio
PKI-179 is a potent and orally active dual PI3K mTOR inhibitor, with IC50s of 8 nM, 24 nM, 74 nM, 77 nM, and 0.42 nM for PI3K-α, PI3K-β, PI3K-γ, PI3K-δ and mTOR, respectively. PKI-179 also exhibits activity over E545K and H1047R, with IC50s of 14 nM and 11 nM, respectively. PKI-179 shows anti-tumor activity in vivo[1][2]. PKI-179 inhibits the cell proliferation, with IC50s of 22 nM and 29 nM for MDA361 and PC3 cells, respectively[1].PKI-179 shows inhibitory activity against a panel of 361 other kinases, hERG and cytochrome P450 (CYP) isoforms at concentrations up to >30 μM, but does have activity for CYP2C8 (IC50=3 μM)[1]. PKI-179 (5-50 mg kg; p.o. once daily for 40 days) inhibits the tumor growth and is well tolerated in nude mice bearing MDA-361 human breast cancer tumors[1].PKI-179 (50 mg kg; p.o.) results in good inhibition of PI3K signaling in nude mice bearing MDA361 tumor xenografts[1].PKI-179 exhibits good oral bioavailability (98% in nude mouse, 46% in rat, 38% in monkey, and 61% in dog) and a high half-life (>60 min) [1]. [1]. Venkatesan AM, et, al. PKI-179: an orally efficacious dual phosphatidylinositol-3-kinase (PI3K) mammalian target of rapamycin (mTOR) inhibitor. Bioorg Med Chem Lett. 2010 Oct 1;20(19):5869-73.[2]. Rehan M. A structural insight into the inhibitory mechanism of an orally active PI3K mTOR dual inhibitor, PKI-179 using computational approaches. J Mol Graph Model. 2015 Nov;62:226-234.
Inactivation of the tumor suppressor p53 commonly coincides with increased signaling through NF-κB in cancer. CAY10681 is a dual modulator of p53-MDM2 interaction and NF-κB signaling. It potently binds MDM2 (Ki = 250 nM), reducing MDM2-mediated turnover of p53. CAY10681 also inhibits phosphorylation of IκBα and dose-dependently reduces nuclear accumulation of p65. It blocks the proliferation of cancer cell lines (IC50s range from 33 to 37 μM). CAY10681 exhibits excellent oral bioavailability and inhibits tumor growth in A549 xenografts in nude mice.
Kigamicins are natural antitumor antibiotics that selectively kill pancreatic cancer PANC-1 cells only under nutrient-starved conditions. They also show antimicrobial activity against Gram-positive bacteria, including methicillin-resistant S. aureus. Kigamicin C inhibits PANC-1 cell survival in nutrient-deprived media at a 100-fold lower concentration than that required for cells maintained in nutrient-rich media. A related compound, kigamicin D, is active in vivo, suppressing the tumor growth of several pancreatic cancer cell lines in nude mice. It blocks the activation of Akt induced in PANC-1 cells placed in nutrient-deprived media. Kigamicin can also induce necrosis in human myeloma cells, but not normal lymphocytes, maintained in nutrient-rich media (CC50 = 100 nM).
Tubulin polymerization-IN-6 (compound 5f) is a potent inhibitor of tubulin polymerization, with an IC50 of 1.09 μM. It not only inhibits cell migration and tube formation but also has anti-angiogenic properties. Additionally, Tubulin polymerization-IN-6 has been found to effectively hinder tumor growth in HT29 xenograft Balb c nude mice [1].
Anticancer agent 57 (compound 14) demonstrates potent inhibition of MDA-MB-231, MDA-MB-468, and MCF-7 cell lines, with IC 50 values ranging from 6.43 to 8.00 μM. Additionally, this agent induces cell cycle arrest and promotes apoptosis. In vivo studies using nude mice xenografted with MADMB-231 cells have shown that Anticancer agent 57 effectively inhibits tumor growth. Consequently, Anticancer agent 57 can serve as a valuable tool for researching triple negative breast cancer (TNBC) [1].