Oxythiamine, an antimetabolite and a vitamin B1 antagonist, is a well-known thiamine antagonist and inhibitor of transketolase.

Vitamin B1, Thiamine, Transketolase^[1].

Oxythiamine, an antimetabolite and a vitamin B1 antagonist, is a well-known thiamine antagonist and inhibitor of transketolase. Oxythiamine alters protein expression in a dose dependent manner. The level of alpha-enolase is increased by Oxythiamine treatment, while expression of 14-3-3 protein beta/alpha is suppressed by Oxythiamine at a stratified dose. Oxythiamine causes dynamic changes of total protein expression in time dependent fashion. Oxythiamine suppresses expression of cellular phosphor proteins significantly^[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.

266.34

C₁₂H₁₆N₃O₂S⁺

136-16-3

Room temperature in continental US; may vary elsewhere.

Powder	-20°C	3 years
In solvent	-80°C	6 months
	-20°C	1 month

In Vitro: 

DMSO : 51.67 mg/mL (194.00 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。

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: ≥ 2.58 mg/mL (9.69 mM); Clear solution

  此方案可获得 ≥ 2.58 mg/mL (9.69 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.8 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: ≥ 2.58 mg/mL (9.69 mM); Clear solution

  此方案可获得 ≥ 2.58 mg/mL (9.69 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.8 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: ≥ 2.58 mg/mL (9.69 mM); Clear solution

  此方案可获得 ≥ 2.58 mg/mL (9.69 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 25.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Moradi H, et al. Functional thiamine deficiency in end-stage renal disease: malnutrition despite ample nutrients. Kidney Int. 2016 Aug;90(2):252-254.

  [2]. Wang J, et al. Inhibition of transketolase by oxythiamine altered dynamics of protein signals in pancreatic cancer cells. Exp Hematol Oncol. 2013 Jul 27;2:18.

Human pancreatic carcinoma cell line MIA PaCa-2 is used throughout the study. Experiments are set up in two groups: dose and time-dependent groups. For the dose-dependent group, the cells are stimulated with 5, 50 and 500 μM Oxythiamine (OT) for 48 hours, respectively. The unstimulated cells are considered as control. For the time-dependent group, the cells are stimulated with 50 μM Oxythiamine in MEM containing natural amino acids or 50% of 15 N algal amino acid mixture for 12 and 48 h. The unstimulated cells are considered as the zero time point. Each treatment is repeated four times with 10 mL/flask. The cell pellets are then collected for further analysis^[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.

• [1]. Moradi H, et al. Functional thiamine deficiency in end-stage renal disease: malnutrition despite ample nutrients. Kidney Int. 2016 Aug;90(2):252-254.

  [2]. Wang J, et al. Inhibition of transketolase by oxythiamine altered dynamics of protein signals in pancreatic cancer cells. Exp Hematol Oncol. 2013 Jul 27;2:18.