APTO-253 (LOR-253) 是一种小分子，可抑制c-Myc表达，稳定 G-四链体 DNA 并诱导急性髓样白血病细胞的细胞周期停滞和凋亡。APTO-253 通过诱导 Kruppel-like factor 4(KLF4)抑癌因子介导抗癌活性。APTO-253 具有抗关节炎活性。
| 生物活性 | APTO-253 (LOR-253) is a small molecule that inhibitsc-Mycexpression, stabilizesG-quadruplexDNA, and induces cell cycle arrest andapoptosisin acute myeloid leukemia cells. APTO-253 mediates anticancer activity through induction of theKrüppel-like factor 4 (KLF4)tumor suppressor[1][2]. APTO-253 has antiarthritic activity[3]. |
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体外研究
(In Vitro) | APTO-253 (LOR-253) is an inducer of KLF4. APTO-253 (5 μM) induces KLF4 expression, and enhances apoptosis induced by NSC 119875 in both SKOV3 and OVCAR3 cells. APTO-253 (5 μM) also leads to G1 phase arrest and reduces S and G2/M phase cells in SKOV3 and OVCAR3 cells[1].
APTO-253 is cytotoxic to Raji and Raji/253R cell lines, with IC50s of 105 ± 2.4 nM and 1387 ± 94 nM, respectively. APTO-253 (0.5 μM) also causes DNA damage in Raji cells. BRCA1/2 deficient cells are hypersensitive to APTO-253. ABCG2 overexpressed HEK-293 cells are resistant to APTO-253 and inhibition of ABCG2 reverses resistance to APTO-253 in Raji/253R[2].
APTO-253 suppresses the proliferation of acute myeloid leukemia (AML) cell lines and various forms of lymphoma cell lines with IC50s ranging from 57 nM to 1.75 μM. APTO-253 (500 nM) also causes G0/G1 cell cycle arrest, induces apoptosis, and down regulates MYC RNA and protein expression in AML lines. APTO-253 (500 nM) leads to DNA damage response pathways in MV4-11 cells. Futhermore, APTO-253 is a potent stabilizer of Gquadruplex (G4) motifs, and demonstrates the greatest propensity for stabilizing the MYC G4 sequences[3].
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体内研究
(In Vivo) | APTO-253 (LOR-253; 15 mg/kg; IV; twice per day for 2 consecutive days per week for 14 days) has antiarthritic activity in a CIA model[3].
| Animal Model: | DBA/1J male mice (6 weeks) with collagen induced arthritis (CIA)[3] | | Dosage: | 15 mg/kg | | Administration: | IV; twice per day for 2 consecutive days per week for 14 days | | Result: | Demonstrated significant preventive and therapeutic activity on arthritis formation. |
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| 运输条件 | Room temperature in continental US; may vary elsewhere. |
| 储存方式 | | Powder | -20°C | 3 years | | 4°C | 2 years | | In solvent | -80°C | 6 months | | -20°C | 1 month |
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| 溶解性数据 | In Vitro: DMSO : 60 mg/mL(163.32 mM;Need ultrasonic) 配制储备液 | 1 mM | 2.7220 mL | 13.6099 mL | 27.2198 mL | | 5 mM | 0.5444 mL | 2.7220 mL | 5.4440 mL | | 10 mM | 0.2722 mL | 1.3610 mL | 2.7220 mL |
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储备液的保存方式和期限：-80℃, 6 months; -20℃, 1 month。-80℃ 储存时，请在 6 个月内使用，-20℃ 储存时，请在 1 个月内使用。 In Vivo: 请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照In Vitro方式配制澄清的储备液，再依次添加助溶剂： ——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；
以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶 1. 请依序添加每种溶剂： 10% DMSO 40%PEG300 5%Tween-80 45% saline Solubility: 2.3 mg/mL (6.26 mM); Suspended solution; Need ultrasonic and warming
此方案可获得 2.3 mg/mL (6.26 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。 以 1 mL 工作液为例，取 100 μL 23.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。 2. 请依序添加每种溶剂： 10% DMSO 90% (20%SBE-β-CDin saline) Solubility: 2.08 mg/mL (5.66 mM); Suspended solution; Need ultrasonic
此方案可获得 2.08 mg/mL (5.66 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。 以 1 mL 工作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。 *以上所有助溶剂都可在本网站选购。
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