Tazarotene (AGN 190168) is a selective retinoic acid receptor (RAR) agonist for the treatment of plaque psoriasis and acne vulgaris.

Tazarotene (AGN 190168), in both gel and cream formulations, has been used both as monotherapy and as an adjuvant therapy. For psoriasis it has been combined with steroids, calcipotriene and phototherapy, and for acne, with antibiotics. Tazarotene (AGN 190168) has been shown to upregulate the tumor suppressor, Tazarotene (AGN 190168) induced gene 3, which is overexpressed in psoriasis and skin cancer^[1]. In human epidermal cell cultures, Tazarotene (AGN 190168) suppresses the gene expression of 2 marker proteins, MRP-8 (calgranulin A) and SKALP (skin derived anti-leukoproteinase), highly elevated in psoriatic epidermis^[2].

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.

Topical gel application provides direct delivery of Tazarotene (AGN 190168) into the skin. At 10 hours after a topical application of 0.1% Tazarotene (AGN 190168) gel to the skin of healthy individuals and patients with psoriasis, approximately 4 to 6% of the dose resides in the stratum corneum and 2% of the dose distributed to the viable epidermis and dermis. Tazarotene (AGN 190168) is designed to undergo rapid and complete metabolism to its active metabolite tazarotenic acid. Tazarotenic acid has a short systemic residence time and limited tissue distribution in animals^[3].When topically applied, Tazarotene (AGN 190168) blocks the induction of ornithine decarboxylase (ODC) activity by the tumour promoter 12-O-tetradecanoylphorbol 13-acetate (TPA) in the epidermis of the hairless mouse^[3].

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.

351.46

C₂₁H₂₁NO₂S

118292-40-3

他扎罗汀；他佐罗汀

Room temperature in continental US; may vary elsewhere.

DMSO : 50 mg/mL (142.26 mM; Need ultrasonic)

H₂O : < 0.1 mg/mL (insoluble)

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 (7.11 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (7.11 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% corn oil

  Solubility: ≥ 2.5 mg/mL (7.11 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (7.11 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]. Talpur R, et al. Efficacy and safety of topical tazarotene: a review. Expert Opin Drug Metab Toxicol. 2009 Feb;5(2):195-210.

  [2]. Nagpal S, et al. Negative regulation of two hyperproliferative keratinocyte differentiation markers by a retinoic acidreceptor-specific retinoid: insight into the mechanism of retinoid action in psoriasis. Cell Growth Differ. 1996 Dec;7(12):1783-91.

  [3]. Tang-Liu DD, et al. Clinical pharmacokinetics and drug metabolism of tazarotene: a novel topical treatment for acne and psoriasis. Clin Pharmacokinet. 1999 Oct;37(4):273-87.