KAG-308
目录号 : GC36379
KAG-308 是一种有效、选择性、可口服的 EP4 receptor (一种前列腺素 E2 受体亚型) 激动剂，抑制结肠炎，促进组织粘膜愈合，有效抑制 TNF-α 的产生。KAG-308 对人 EP4 受体的 Ki 值和 EC50 值分别为 2.57 nM 和 17 nM，对其选择性高于 EP1，EP2，EP3 和 IP 受体。
Cas No.:1215192-68-9
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
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- Purity: >98.00%
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- Datasheet
KAG-308 is a potent selective and orally active agonist of EP4 receptor (a prostaglandin E2 receptor subtype), suppresses colitis and promotes histological mucosal healing, potently inhibits TNF-α production. KAG-308 shows a Ki and an EC50 of 2.57 nM and 17 nM for human EP4 receptor, respectively, more selective over EP1, EP2, EP3 and IP receptor[1]. EC50: 17 nM (Human EP4 receptor), 160 nM (Human EP3 receptor), 1000 nM (Human EP2 receptor), 1000 nM (Human EP2 receptor)[1]Ki: 2.57 nM (Human EP4 receptor), 32.4 nM (Human EP3 receptor), 52.9 nM (Human IP receptor), 1410 nM (Human EP1 receptor), 1540 nM (Human EP2 receptor)[1]
KAG-308 is a potent selective and orally active agonist of EP4 receptor, suppresses colitis and promots histological mucosal healing. KAG-308 shows a Ki and EC50 values of 2.57 nM and 17 nM for human EP4 receptor, respectively, more selective over human EP1 (Ki, 1410 nM; EC50, 1000 nM), EP2 (Ki, 1540 nM; EC50, 1000 nM), EP3 (Ki, 32.4 nM; EC50, 160 nM) and IP receptor (Ki, 52.9 nM; EC50, >10000 nM). KAG-308 also exhibits potent agonist activity for human and mouse EP4 with an EC50 of 0.15 nM and 1.0 nM, respectively in the dual luciferase reporter assay[1].
[1]. Watanabe Y, et al. KAG-308, a newly-identified EP4-selective agonist shows efficacy for treating ulcerative colitis and can bring about lower risk of colorectal carcinogenesis by oral administration. Eur J Pharmacol. 2015 May 5;754:179-89.
| Cas No. | 1215192-68-9 | SDF | |
| Canonical SMILES | O[C@H](C1)[C@H](/C=C/[C@@H](O)[C@@H](C2=CC=CC(C)=C2)C)[C@](C/3(F)F)([H])[C@@]1([H])OC3=C/CCCC4=NN=NN4 | ||
| 分子式 | C24H30F2N4O3 | 分子量 | 460.52 |
| 溶解度 | Soluble in DMSO | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.1715 mL | 10.8573 mL | 21.7146 mL |
| 5 mM | 0.4343 mL | 2.1715 mL | 4.3429 mL |
| 10 mM | 0.2171 mL | 1.0857 mL | 2.1715 mL |
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KAG-308, a newly-identified EP4-selective agonist shows efficacy for treating ulcerative colitis and can bring about lower risk of colorectal carcinogenesis by oral administration
Eur J Pharmacol 2015 May 5;754:179-89.PMID:25704618DOI:10.1016/j.ejphar.2015.02.021.
Agonists for EP4 receptor, a prostaglandin E2 receptor subtype, appear to be a promising therapeutic strategy for ulcerative colitis (UC) due to their anti-inflammatory and epithelial regeneration activities. However, the clinical development of orally-available EP4 agonists for mild to moderate UC has not yet been reported. Furthermore, the possibility of an increased risk of colitis-associated cancer (CAC) through direct proliferative effects on epithelial cells via EP4 signaling has not been ruled out. Recently, we identified KAG-308 as an orally-available EP4-selective agonist. Here, we investigated the pharmacological and pharmacokinetic profiles of KAG-308. Then, we compared KAG-308 and sulfasalazine (SASP) for their abilities to prevent colitis and promote mucosal healing in a mouse model of dextran sulfate sodium (DSS)-induced colitis. Finally, the effect of KAG-308 treatment on CAC was evaluated in an azoxymethane (AOM)/DSS-induced CAC mouse model. KAG-308 selectively activated EP4 and potently inhibited tumor necrosis factor-α production in peripheral whole blood and T cells. Oral administration of KAG-308, which showed relatively high bioavailability, suppressed the onset of DSS-induced colitis and promoted histological mucosal healing, while SASP did not. KAG-308 also prevented colorectal carcinogenesis by inhibiting colitis development and consequently decreasing mortality in a CAC model, whereas SASP had marginal effects. In contrast, MF-482, an EP4 antagonist, increased mortality. These results indicated that orally-administered KAG-308 suppressed colitis development and promoted mucosal healing. Moreover, it exhibited preventive effects on colorectal carcinogenesis, and thus may be a new therapeutic strategy for the management of UC that confers a reduced risk of colorectal carcinogenesis.
Oral administration of EP4-selective agonist KAG-308 suppresses mouse knee osteoarthritis development through reduction of chondrocyte hypertrophy and TNF secretion
Sci Rep 2019 Dec 30;9(1):20329.PMID:31889132DOI:10.1038/s41598-019-56861-6.
Osteoarthritis (OA) is one of the world's most common degenerative diseases, but there is no disease-modifying treatment available. Previous studies have shown that prostaglandin E2 (PGE2) and PGE2 receptor 4 (EP4) are involved in OA pathogenesis; however, their roles are not fully understood. Here, we examined the efficacy of oral administration of KAG-308, an EP4-selective agonist, in surgically induced mouse knee OA. Cartilage degeneration and synovitis were significantly inhibited by the KAG-308 treatment. Chondrocyte hypertrophy and expression of tumor necrosis factor alpha (TNF) and matrix metalloproteinase 13 (Mmp13) in the synovium were suppressed in the KAG-308-treated mice. In cultured chondrocytes, hypertrophic differentiation was inhibited by KAG-308 and intranuclear translocation of histone deacetylase 4 (Hdac4) was enhanced. In cultured synoviocytes, lipopolysaccharide (LPS)-induced expression of TNF and Mmp13 was also suppressed by KAG-308. KAG-308 was detected in the synovium and cartilage of orally treated mice. TNF secretion from the synovia of KAG-308-treated mice was significantly lower than control mice. Thus, we conclude that oral administration of KAG-308 suppresses OA development through suppression of chondrocyte hypertrophy and synovitis. KAG-308 may be a potent candidate for OA drug development.
Establishment of a system to evaluate the therapeutic effect and the dynamics of an investigational drug on ulcerative colitis using human colonic organoids
J Gastroenterol 2019 Jul;54(7):608-620.PMID:30599053DOI:10.1007/s00535-018-01540-y.
Background: Ulcerative colitis (UC) is a chronic inflammatory disease of the colon with an intractable, recurrent course. The goal of UC therapy is to target mucosal healing because immune-suppressive therapy for UC frequently results in relapse. However, few drugs directly target mucosal healing. We, therefore, aim to evaluate the therapeutic effect of an investigational drug on intestinal epithelial cells in an in vitro UC model using human colonic organoids. Methods: Colonic organoids were isolated from human colon and cultured. A mixture of cytokines and bacterial components were used to mimic UC in humans. The effect of the investigational drug on colonic organoid was evaluated by microarray analysis and 3D immunofluorescence. The enrichment of stem cells was assessed with a colony formation assay. Results: Inflammatory stimulation resulted in a significant induction of inflammatory-related genes in colonic organoids whereas cell differentiation was suppressed. Treatment with the investigational drug KAG-308 showed reciprocal dynamics of gene expression to inflammatory stimulation, which resulted in not only the suppression of immune response but also the promotion of cellular differentiation towards secretory lineages. Moreover, SPDEF and Reg4 were identified as novel targets for the enrichment of intestinal epithelial stem cells and mucosal healing. Conclusions: The establishment of in vitro UC model using human colonic organoid could reveal the effects and targets of investigational drugs in intestinal epithelial cells under inflammation conditions. Further maturation of this system might be more efficient to predict the effect on UC, as compared with the use of animal model, for the development of new drugs.