DMAPT (Dimethylamino Parthenolide), an analogue of Parthenolide (PTL), is an oral active NF-κB inhibitor, with a LD50 of 1.7 μM for cell population in AML cells. Has potential anti-cancer and anti-metastatic effect[1].
IC50 & Target
NF-κB[1].
体外研究 (In Vitro)
DMAPT treatment decreased constitutive NF-κB binding activity, inhibits cell proliferation and viability of PC-3 and DU145 cells[2]. Treatment of PC-3 and DU145 cells with 5 and 4 μM DMAPT, respectively, increases the population doubling times of PC-3 prostate cancer cells from 23.0 ± 5.0 h to 42.0 ± 3.0 h and of the DU145 cells from 20.4 ± 2.2 h to 72.5 ± 24.8 h[2].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Decreased constitutive NF-κB binding activity, inhibits cell proliferation and viability of PC-3 and DU145 cells.
体内研究 (In Vivo)
Treatment with DMAPT (100 mg/kg, Oral gavage daily for 7 days) increases sensitivity of PC-3 tumor xenografts to X-rays[2]. DMAPT (100 mg/kg, Oral gavage thrice weekly from 42 to 300 days since birth) treatment slows normal tumor development in TRAMP mice, extending the time-to-palpable prostate tumor by 20%[3]. DMAPT further reduces the metastatic area below that of the water vehicle treatment group in lung tissues (0.10% ± 0.15 SD, 92% reduction, p = 0.0028) in TRAMP mice[3].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Model:
PC-3 tumor xenograft in athymic nude mice[2].
Dosage:
100 mg/kg.
Administration:
Oral gavage daily for 7 days.
Result:
Increased sensitivity of PC-3 tumor xenografts to X-rays.
Animal Model:
Six-week-old male TRAMP mice[3].
Dosage:
100 mg/kg.
Administration:
Oral gavage thrice weekly from 42 to 300 days since birth.
Result:
Slowed normal tumor development in TRAMP mice, extending the time-to-palpable prostate tumor by 20%.
分子量
293.40
Formula
C17H27NO3
CAS 号
870677-05-7
运输条件
Room temperature in continental US; may vary elsewhere.
[1]. Neelakantan S, et al. Aminoparthenolides as novel anti-leukemic agents: Discovery of the NF-kappaB inhibitor, DMAPT (LC-1). Bioorg Med Chem Lett. 2009 Aug 1;19(15):4346-9.
[2]. Mendonca MS, et al. DMAPT inhibits NF-κB activity and increases sensitivity of prostate cancer cells to X-rays in vitro and in tumor xenografts in vivo. Free Radic Biol Med. 2017 Nov;112:318-326.
[3]. Morel KL, et al. Chronic low dose ethanol induces an aggressive metastatic phenotype in TRAMP mice, which is counteracted by parthenolide. Clin Exp Metastasis. 2018 Oct;35(7):649-661.
Parthenolide is a sesquiterpene lactone found in the medicinal herb Feverfew. Parthenolide exhibits anti-inflammatory activity by inhibiting NF-κB activation; also inhibits HDAC1 protein without affecting other class I/II HDACs.
IC50 & Target[1]
NF-κB
Autophagy
Mitophagy
体外研究 (In Vitro)
Parthenolide (PTL) has a dose-dependent growth inhibition effect on NSCLC cells Calu-1, H1792, A549, H1299, H157, and H460. Parthenolide can induce cleavage of apoptotic proteins such as CASP8, CASP9, CASP3 and PARP1 both in concentration- and time-dependent manner in tested lung cancer cells, indicating that apoptosis is trigged after Parthenolide exposure. In addition to induction of apoptosis, Parthenolide also induces G0/G1 cell cycle arrest in a concentration-dependent manner in A549 cells and G2/M cell cycle arrest in H1792 cells[2].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
体内研究 (In Vivo)
Only Parthenolide, the HDAC inhibitor with anti-inflammatory features, displayed a potent anti-apoptotic effect in Phb1 KO hepatocytes. Indeed, TSA and Parthenolide-treated hepatocytes showed increased levels of FXR, and reduced levels of CYP7A1, HDAC4, TNFα, TRAIL and Bax suggesting a less toxic effect of bile acids as a results of specific HDAC inhibition, resulting in the attenuation of the Phb1 KO hepatocytes apoptotic response. Importantly, Parthenolide exerts a protective effect from the liver injury after BDL in Phb1 KO mice. Indeed, Parthenolide treatment results in a reduction of the mortality rate of this mice after BDL associated with a lower apoptotic response as revealed by a reduction of necrotic areas, Tunel-staining, as well as decreased ALT (8431±957 vs.4225±210 U/L) and AST (4805±300 vs.2242±438 U/L) activities compared to control Phb1 KO mice[3].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
分子量
248.32
Formula
C15H20O3
CAS 号
20554-84-1
中文名称
小白菊内酯;银胶菊内酯
运输条件
Room temperature in continental US; may vary elsewhere.
[1]. Nakshatri H, et al. NF-κB-dependent and -independent epigenetic modulation using the novel anti-cancer agent DMAPT. Cell Death Dis. 2015 Jan 22;6:e1608.
[2]. Zhao X, et al. Parthenolide induces apoptosis via TNFRSF10B and PMAIP1 pathways in human lung cancer cells. J Exp Clin Cancer Res. 2014 Jan 6;33:3.
[3]. Barbier-Torres L, et al. Histone deacetylase 4 promotes cholestatic liver injury in the absence of prohibitin-1. Hepatology. 2015 Oct;62(4):1237-48.
Cell Assay [2]
Human lung cancer cell lines are seeded in 96-well plates and treated on the second day with the given concentration of Parthenolide (0, 5, 10, 20 μM) for another 48 hours and then subjected to SRB or MTT assay. For SRB assay, live cell number is estimated as described earlier. After treatment, the medium is discarded firstly. In order to fix the adherent cells, 100 μL of cold trichloroacetic acid (10% (w/v)) are adding to each well and incubating at 4°C for at least 1 hour. The plates are then washed five times with deionized water and dried in the air. Each well are then added with 50 μL of SRB solution (0.4% w/v in 1% acetic acid) and incubated for 5 min at room temperature. The plates are washed five times with 1% acetic acid to remove unbound SRB and then air dried. The residual bound SRB is solubilized with 100 μL of 10 mM Tris base buffer (pH 10.5), and then read using a microtiter plate reader at 495 nm. The MTT assay is executed. 20 μL MTT (5 mg/mL) are added to each sample and incubate at 37°C for 4 h, then 100 μL solubilization solution are added. Cell viability is determined at 595 nm[2].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration [3]
Mice[3] Phb1 KO mice are used. Males from 8-12 weeks of age are treated. Parthenolide is intraperitoneally injected at a dose of 3 mg/kg 24 h and 1h before bile duct ligation (BDL) or twice a week during two weeks. Liver specimens are snap-frozen for subsequent analysis[3].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
参考文献
[1]. Nakshatri H, et al. NF-κB-dependent and -independent epigenetic modulation using the novel anti-cancer agent DMAPT. Cell Death Dis. 2015 Jan 22;6:e1608.
[2]. Zhao X, et al. Parthenolide induces apoptosis via TNFRSF10B and PMAIP1 pathways in human lung cancer cells. J Exp Clin Cancer Res. 2014 Jan 6;33:3.
[3]. Barbier-Torres L, et al. Histone deacetylase 4 promotes cholestatic liver injury in the absence of prohibitin-1. Hepatology. 2015 Oct;62(4):1237-48.