Cholesterol (Synonyms:胆固醇)
目录号 : KM16302 CAS No. : 57-88-5 纯度 : ≥98%

Cholesterol 是一种哺乳动物中的主要固醇,占质膜结构成分的 20-25%。 质膜对水具有高渗透性,但对离子和质子则相对不可渗透。Cholesterol 在确定膜的流动性和渗透性特征以及转运蛋白和信号蛋白的功能中起着重要作用。Cholesterol 还是一种内源性雌激素相关受体 α (ERRα) 激动剂。

规格 价格 是否有货 数量
500mg
In-stock
1g 询价 In-stock
5g 询价 In-stock
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生物活性

Cholesterol is the major sterol in mammals and is makes up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

体外研究

GT1-7 hypothalamic cells subjected to Cholesterol depletion in vitro produced 20-31% reductions in cellular Cholesterol content. All Cholesterol-depleted neuron-derived cells, exhibit decreased phosphorylation/activation of IRS-1 and AKT following stimulation by insulin, insulin-like growth factor-1, or the neurotrophins (NGF and BDNF). Reduction in cellular Cholesterol also results in increased basal autophagy and impairment of induction of autophagy by glucose deprivation.

体内研究

Insulin-deficient diabetes in mice can lead to a reduction in brain Cholesterol synthesis, which occurs through a change in expression of Cholesterol synthesis enzymes and their upstream regulators SREBP2 and SCAP1.
The pool of Cholesterol in the whole animal is 2,200 mg/kg body weight. This is true for essentially all species from the mouse to the primate and indicates that the average concentration of Cholesterol in the whole animal is 2.2 mg/g fresh tissue.
The basal metabolic rate in the mouse is 170 kilocalories (kcal)/day/kg, and the flow of Cholesterol from all peripheral organs to the liver is greater than 100 mg/day/kg.

分子式
C27H46O
分子量
386.65
CAS号
57-88-5
中文名称
胆固醇;胆甾醇
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性数据
In Vitro: 

Ethanol : 25 mg/mL (64.66 mM; Need ultrasonic)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.5863 mL 12.9316 mL 25.8632 mL
5 mM 0.5173 mL 2.5863 mL 5.1726 mL
10 mM 0.2586 mL 1.2932 mL 2.5863 mL
*

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: ≥ 3.43 mg/mL (8.87 mM); Clear solution

    此方案可获得 ≥ 3.43 mg/mL (8.87 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 34.3 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。

  • 2.

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

    Solubility: ≥ 3.43 mg/mL (8.87 mM); Clear solution

    此方案可获得 ≥ 3.43 mg/mL (8.87 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 34.3 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。

  • 3.

    请依序添加每种溶剂: 10% DMSO    90% corn oil

    Solubility: ≥ 3.43 mg/mL (8.87 mM); Clear solution

    此方案可获得 ≥ 3.43 mg/mL (8.87 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 34.3 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。

  • 4.

    请依序添加每种溶剂: 10% EtOH    90% corn oil

    Solubility: ≥ 2.5 mg/mL (6.47 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (6.47 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 EtOH 储备液加到 900 μL玉米油中,混合均匀。

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科研文献
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