Ricolinostat (ACY-1215) is a potent and selective HDAC6 inhibitor, with an IC₅₀ of 5 nM. ACY-1215 also inhibits HDAC1, HDAC2, and HDAC3 with IC₅₀s of 58, 48, and 51 nM, respectively.

Ricolinostat (ACY-1215) has slight activity against HDAC8 (IC₅₀=0.1 μM), and has minimal activity (IC₅₀>1 μM) against HDAC4, HDAC5, HDAC7, HDAC9, HDAC11, Sirtuin1, and Sirtuin2. The effect of Ricolinostat (ACY-1215) on multiple myeloma (MM) cell viability is determined with MTT assays using MM cell lines. Exposure of MM cell lines for 48 hours results in dose-dependent decreased viability, with IC₅₀ values ranging from 2-8μM. Ricolinostat (ACY-1215) demonstrates significant activity in the MM PS-341-resistant cell line (ANBL-6.BR), demonstrating the ability of Ricolinostat (ACY-1215) to overcome PS-341 resistance^[1].

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.

Mice treated with Ricolinostat (ACY-1215), PS-341, or Ricolinostat plus PS-341 show a significant delay in tumor growth (P=0.01, P=0.006, and P<0.0001, respectively). Combined treatment with Ricolinostat and PS-341 shows significant suppression of tumor growth and significantly prolonged overall survival (OS) compare with the control group (17 days in the control vs 40 days in the combination-treated group, P<0.0001) and the Ricolinostat (ACY-1215)-treated group (22 days in the PS-341 group vs 40 days in the combination-treated group, P<0.0001). Weight loss in the combination-treated group is between 4% and 12% compare with the same-day control group values during treatment, with complete recovery after the last injection. As is observed in the plasmacytoma model, a significant therapeutic advantage is found by combining Ricolinostat with PS-341 compare with either agent alone^[1].

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.

433.50

C₂₄H₂₇N₅O₃

1316214-52-4

Room temperature in continental US; may vary elsewhere.

4°C, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)

DMSO : ≥ 50 mg/mL (115.34 mM)

* “≥” means soluble, but saturation unknown.

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, 6 months; -20°C, 1 month (stored under nitrogen)。-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。

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: ≥ 2.5 mg/mL (5.77 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.77 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 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。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (5.77 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.77 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (5.77 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.77 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Santo L, et al. Preclinical activity, pharmacodynamic, and pharmacokinetic properties of a selective HDAC6 inhibitor, ACY-1215, in combination with PS-341 in multiple myeloma. Blood. 2012 Mar 15;119(11):2579-89.

The effect of Ricolinostat with or without PS-341 on the viability of MM cell lines, patient MM cells, and PBMCs is assessed by measuring MTT dye absorbance. PBMCs from healthy donors are isolated and stimulated with 2.5 μg/mL of phytohemagglutinin (PHA) for 48 hours in the presence of increasing concentrations of Ricolinostat (ACY-1215). DNA synthesis is measured by tritiated thymidine uptake. CD4⁺ T cells are purified from human blood with the Rosette Sep negative-selection kit. Cells are stimulated by CD3/CD28 Dynabeads for 7 days in the presence of compounds. Cell viability is assessed using alamarBlue. MM cells (2-3×10⁴ cells/well) are incubated in 96-well culture plates with medium and different concentrations of Ricolinostat (ACY-1215), PS-341, and/or recombinant IL-6 (10 ng/mL) or IGF-1 (50 ng/mL) for 24 hours at 37°C, and tritiated thymidine incorporation is measured^[1].

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.

Mice^[1]
To evaluate the in vivo anti-MM activity of Ricolinostat, male SCID mice are inoculated subcutaneously with 5×10⁶ MM.1S cells in 100 μL of serum-free RPMI 1640 medium. When tumors are measurable, mice are treated IP with Ricolinostat 50 mg/kg dissolved in 10% DMSO in 5% dextrose in water consecutively for 5 days a week for 3 weeks; PS-341 0.5 mg/kg dissolved in 0.9% saline solution biweekly (IV) for 3 consecutive weeks; or combination with the same dosing regimen used for the individual agents. The control group receive the carrier alone at the same schedule as the combination group. Tumor size is measured every other day in 2 dimensions using calipers, and tumor volume is calculated with the formula: V=0.5(a×b²) where a is the long diameter of the tumor and b is the short diameter of the tumor. Mice are killed when the tumor reaches 2 cm³ or is ulcerated. Survival and tumor growth are evaluated from the first day of treatment until death.

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.

• [1]. Santo L, et al. Preclinical activity, pharmacodynamic, and pharmacokinetic properties of a selective HDAC6 inhibitor, ACY-1215, in combination with PS-341 in multiple myeloma. Blood. 2012 Mar 15;119(11):2579-89.