Nitisinone (尼替西农）

Nitisinone is an orally active, competitive and reversible 4-hydroxyphenylpyruvate dioxygenase (4-HPPD) inhibitor with an IC₅₀ of 173 nM. Nitisinone promotes tyrosine accumulation in a dose-dependent manner. nitisinone can be used in studies of hereditary tyrosinemia type 1 (HT-1) (a rare genetic disorder) and albinism^[1][2][3][4].

Nitisinone (0.01-10 µM; 72 h) promotes tyrosine accumulation in a dose-dependent manner^[1].

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

Cell Viability Assay^[1]

Nitisinone (5, 10 mg/kg; p.o.; 5 days aweek for 6 weeks) inhibits HPPD in a dose- and time- dependent manner in rat liver^[2].
Nitisinone (4 mg/kg; p.o.; single daily; one day interval for 1 month) elevates tyrosine in both OCA-1A and OCA-1B model^[3].
Nitisinone (4 mg/kg; p.o.; single daily; one day interval for 1 month) increases coat and iris pigmentation and melanin content in the melanosomes of ocular tissues in a mouse model of OCA-1B^[3].
Note: Oculocutaneous albinism, type 1 (OCA1). There are 2 forms of OCA1, OCA-1A and OCA-1B. Individuals with the former lack functional tyrosinase and therefore lack melanin, while individuals with the latter produce some melanin^[3].

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

329.23

C₁₄H₁₀F₃NO₅

104206-65-7

尼替西农

Room temperature in continental US; may vary elsewhere.

DMSO : 41.67 mg/mL (126.57 mM; Need ultrasonic)

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。-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 (7.59 mM); Clear solution

• 2.

  请依序添加每种溶剂： 10% DMSO 90% corn oil

  Solubility: ≥ 2.5 mg/mL (7.59 mM); Clear solution

• [1]. Laschi M, et al. Inhibition of para-Hydroxyphenylpyruvate Dioxygenase by Analogues of the Herbicide Nitisinone As a Strategy to Decrease Homogentisic Acid Levels, the Causative Agent of Alkaptonuria. ChemMedChem. 2016 Apr 5;11(7):674-8. [Content Brief]

  [2]. Ellis MK, et al. Inhibition of 4-hydroxyphenylpyruvate dioxygenase by 2-(2-nitro-4-trifluoromethylbenzoyl)-cyclohexane-1,3-dione and 2-(2-chloro-4-methanesulfonylbenzoyl)-cyclohexane-1,3-dione. Toxicol Appl Pharmacol. 1995 Jul;133(1):12-9. [Content Brief]

  [3]. Onojafe IF, et al. Nitisinone improves eye and skin pigmentation defects in a mouse model of oculocutaneous albinism. J Clin Invest. 2011 Oct;121(10):3914-23. [Content Brief]

  [4]. Aktuglu-Zeybek A, et al. Nitisinone: a review. Orphan Drugs: Research and Reviews, 2017, 7.