1. Metabolic Enzyme/Protease
  2. Cathepsin
  3. Relacatib

Relacatib (Synonyms: SB-462795)

目录号: HY-10294
产品使用指南

Relacatib (SB-462795) 是一种新的,有效的口服活性的人组织蛋白酶 K, L 和 V (cathepsins K, L, V) 的抑制剂,其Ki 值分别为 41, 68 和 53 pM。Relacatib 原位抑制人破骨细胞内源性组织蛋白酶 K 和人破骨细胞介导的骨吸收,IC50 值分别为 45 nM 和 70 nM。Relacatib 对体外人体组织骨吸收的抑制作用,以及对食蟹猴体内骨吸收有抑制作用。

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Relacatib Chemical Structure

Relacatib Chemical Structure

CAS No. : 362505-84-8

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  • 生物活性

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  • 参考文献

生物活性

Relacatib (SB-462795) is a novel, potent, and orally active inhibitor of human cathepsins K, L, and V with Ki values of 41 pM, 68 pM, and 53 pM, respectively. Relacatib inhibits endogenous cathepsin K in situ in human osteoclasts and human osteoclast-mediated bone resorption with IC50 values of 45 nM and 70 nM, respectively. Relacatib inhibits bone resorption in vitro in human tissue as well as in cynomolgus monkeys in vivo[1][2].

IC50 & Target

Ki: 41 pM (cathepsins K)
68 pM (cathepsins L)
53 pM (cathepsins V)[1]

体外研究
(In Vitro)

Relacatib are incubated with human osteoclastoma-derived osteoclasts seeded onto bovine cortical bone slices in vitro biological activity, it shows inhibitory potency with Ki values of 0.041 nM, 0.068 nM,0.063 nM,1.6 nM,and 13 nM against human cathepsin K, cathepsin L, cathepsin V, cathepsin S and cathepsin B, respectively in the assay[1].
Relacatib is against Monkey cathepsin K, cathepsin L,cathepsin V and cathepsin B with Ki values of 0.041 nM, 0.28 nM, 0.72 nM and 11nM, respectively. Relacatib is against mouse cathepsin L and rat cathepsin L with Ki values of 0.20 nM and 0.17 nM, respectively[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究
(In Vivo)

Relacatib (1-2 mg/kg 0.5 h intravenous infusion; 2-4 mg/kg oral bolus gavage) exhibits T1/2, CL or Vdss with 109 mins, 19.5 mL/min/kg, or 1.86 L/kg in male Sprague-Dawley rats and 168 mins, 11.7 mL/min/kg, and 1.79 L/kg in monkeys, respectively in a PK iv/po crossover studies. The oral bioavailability of Relacatib is 28% in the monkey and 89.4% in the rats[1].
SB-462795 (subcutaneous injection; 12 mg/kg; blood sample is drawn 1.5, 4, 24, 48, and 72 h post dose administration) significantly inhibits resorption as assessed by two markers of bone resorption,the N- (NTx) and C-telopeptides (CTx) of type I collagen measured in serum. SB-462795 does not exhibit difference of serum osteocalcin (a biomarker of osteoblast activity) between SB-462795 and vehicle treated animalsexcept for the 48 h time point where a significant reduction (42% lower than baseline vs. 18% lower than baseline with vehicle treatment)[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Cynomolgus monkey[2]
Dosage: 12 mg/kg
Administration: Subcutaneous injection; single dose; blood sample is drawn 1.5, 4, 24, 48, and 72 h post dose administration
Result: Was sufficiently high to significantly suppress bone resorption from 1.5 to 72 h post dosing.
Clinical Trial
分子量

540.63

Formula

C27H32N4O6S

CAS 号
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

溶解性数据
In Vivo:
  • 1.

    SSB-462795 is prepared as a nanosuspension containing 1.5% Methylcellulose and 2.0% sodium lauryl sulfate[2].

  • 2.

    SB-462795 (12 mg/kg) or vehicle is in 70% aqueous PEG400(1 ml/kg)[2].

参考文献
  • 摩尔计算器

  • 稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量   浓度   体积   分子量 *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

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