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  1. Neuronal Signaling Stem Cell/Wnt
  2. γ-secretase
  3. Begacestat

Begacestat (GSI-953) 是淀粉樣前體蛋白 γ 分泌酶 (gamma-secretase) 的選擇性噻吩磺酰胺抑制劑 (IC5040=15 nM),有潛力用于阿爾茲海默癥的研究。

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Begacestat Chemical Structure

Begacestat Chemical Structure

CAS No. : 769169-27-9

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  • 生物活性

  • 純度 & 產(chǎn)品資料

  • 參考文獻(xiàn)

生物活性

Begacestat (GSI-953) is a selective thiophene sulfonamide inhibitor of amyloid precursor protein gamma-secretase (IC5040=15 nM) for the treatment of Alzheimer's disease[1].

IC50 & Target

IC50: 15 nM (Aβ40)[1].

細(xì)胞效力
(Cellular Effect)
Cell Line Type Value Description References
CHO IC50
14.8 nM
Compound: 16; GSI-953
Inhibition of gamma secretase (unknown origin) mediated APP cleavage in CHO cells expressing APP Swedish KM/NL mutant assessed as reduction in amyloid beta 40 after 24 hrs by sandwich ELISA
Inhibition of gamma secretase (unknown origin) mediated APP cleavage in CHO cells expressing APP Swedish KM/NL mutant assessed as reduction in amyloid beta 40 after 24 hrs by sandwich ELISA
[PMID: 27045975]
CHO ED50
350 nM
Compound: 42
Inhibition of gamma-secretase in CHO cells assessed expressing NotchdeltaE assessed as inhibition of notch cleavage after overnight incubation by luciferase reporter gene assay
Inhibition of gamma-secretase in CHO cells assessed expressing NotchdeltaE assessed as inhibition of notch cleavage after overnight incubation by luciferase reporter gene assay
[PMID: 23713656]
CHO IC50
353 nM
Compound: GSI-953
Inhibition of gamma-secretase in CHO cells after overnight incubation by luciferase reporter gene assay
Inhibition of gamma-secretase in CHO cells after overnight incubation by luciferase reporter gene assay
[PMID: 23312944]
CHO ED50
7.8 nM
Compound: 42
Inhibition of gamma-secretase in CHO cells assessed expressing APPSw assessed as inhibition of amyloid beta(1 to x) secretion after overnight incubation by ELISA
Inhibition of gamma-secretase in CHO cells assessed expressing APPSw assessed as inhibition of amyloid beta(1 to x) secretion after overnight incubation by ELISA
[PMID: 23713656]
HEK293 ED50
7.8 nM
Compound: GSI-953
Inhibition of gamma-secretase in HEK293 cells after overnight incubation by Western blotting analysis
Inhibition of gamma-secretase in HEK293 cells after overnight incubation by Western blotting analysis
[PMID: 23312944]
IMR-32 IC50
1.6 nM
Compound: GSI-953
Inhibition of gamma-secretase in human IMR32 cell membrane using APP as substrate after 2 hrs by ELISA
Inhibition of gamma-secretase in human IMR32 cell membrane using APP as substrate after 2 hrs by ELISA
[PMID: 23312944]
IMR-32 IC50
10.5 nM
Compound: GSI-953
Inhibition of gamma-secretase in human IMR32 cell membrane using Notch as substrate after 2 hrs by ELISA
Inhibition of gamma-secretase in human IMR32 cell membrane using Notch as substrate after 2 hrs by ELISA
[PMID: 23312944]
SH-SY5Y IC50
8 nM
Compound: 62, Begacestat
Displacement of [3H]5-chloro-N-((2S,3R)-5,5,5-trifluoro-1-hydroxy-3-methylpentan-2-yl)thiophene-2-sulfonamide from gamma secretase in human SH-SY5Y cells by competitive binding assay
Displacement of [3H]5-chloro-N-((2S,3R)-5,5,5-trifluoro-1-hydroxy-3-methylpentan-2-yl)thiophene-2-sulfonamide from gamma secretase in human SH-SY5Y cells by competitive binding assay
[PMID: 19694467]
體內(nèi)研究
(In Vivo)

Begacestat (5 mg/kg,p.o., mice) 處理 4 h 顯著降低腦內(nèi) Aβ40 和 Aβ42 水平 (觀察到腦內(nèi) Aβ40 降低 37%,Aβ42 降低 25%)[1]。
Begacestat (GSI-953:0、2.5、5 或 10 mg/kg,口服灌胃,3 小時(shí)) 當(dāng)在訓(xùn)練前 3 小時(shí)口服化合物時(shí),會(huì)導(dǎo)致情境恐懼條件反射缺陷的劑量依賴性逆轉(zhuǎn)。與對(duì)照組給藥的 Tg2576 小鼠相比,在用 2.5 mg/kg Begacestat 處理后觀察到顯著缺陷,而 5 mg/kg 時(shí)有一些逆轉(zhuǎn),10 mg/kg 時(shí)完全逆轉(zhuǎn)[2]。
在所有劑量下,雄性小鼠的脾 (SP) CD4+ 細(xì)胞百分比略低,呈現(xiàn)出劑量相關(guān)趨勢(shì) (SP CD4+ 細(xì)胞在對(duì)照組中約為 11%,而在 Begacestat 給藥動(dòng)物中為 ~7% 至 ~9%) ;在 2000 mg/kg/天的劑量下,雌性小鼠也表現(xiàn)出這一趨勢(shì) (對(duì)照組中 SP CD4+ 細(xì)胞約為 10%,而 Begacestat 給藥動(dòng)物中約為 8%)[2]。

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

Animal Model: Tg2576 mice[2]
Dosage: 0, 2.5, 5, or 10 mg/kg
Administration: Oral gavage for two consecutive days
Result: Resulted in a dose-dependent reversal of contextual fear conditioning deficits when compound is orally administered 3 h before training.
Animal Model: Sprague-Dawley rats[2]
Dosage: 0, 200, 600, or 2000 mg/kg/day for 10 (5 males/group and 5 females at 600 mg/kg/day) or 28 (10/sex/group) consecutive days
Administration: P.O. for 10 (5 males/group and 5 females at 600 mg/kg/day) or 28 (10/sex/group) consecutive days.
Result: A dosage-related trend of slightly lower percentages of SP CD4+ cells in males at all dosages and females at 2000 mg/kg/day was observed.
Clinical Trial
分子量

391.74

Formula

C9H8ClF6NO3S2

CAS 號(hào)
性狀

固體

顏色

White to off-white

運(yùn)輸條件

Room temperature in continental US; may vary elsewhere.

儲(chǔ)存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性數(shù)據(jù)
細(xì)胞實(shí)驗(yàn): 

DMSO 中的溶解度 : 50 mg/mL (127.64 mM; 超聲助溶; 吸濕的 DMSO 對(duì)產(chǎn)品的溶解度有顯著影響,請(qǐng)使用新開封的 DMSO)

配制儲(chǔ)備液
濃度 溶劑體積 質(zhì)量 1 mg 5 mg 10 mg
1 mM 2.5527 mL 12.7636 mL 25.5271 mL
5 mM 0.5105 mL 2.5527 mL 5.1054 mL
查看完整儲(chǔ)備液配制表

* 請(qǐng)根據(jù)產(chǎn)品在不同溶劑中的溶解度選擇合適的溶劑配制儲(chǔ)備液;一旦配成溶液,請(qǐng)分裝保存,避免反復(fù)凍融造成的產(chǎn)品失效
儲(chǔ)備液的保存方式和期限:-80°C, 6 months; -20°C, 1 month。-80°C儲(chǔ)存時(shí),請(qǐng)?jiān)?個(gè)月內(nèi)使用,-20°C儲(chǔ)存時(shí),請(qǐng)?jiān)?個(gè)月內(nèi)使用。

  • 摩爾計(jì)算器

  • 稀釋計(jì)算器

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

質(zhì)量
=
濃度
×
體積
×
分子量 *

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

This equation is commonly abbreviated as: C1V1 = C2V2

濃度 (start)

C1

×
體積 (start)

V1

=
濃度 (final)

C2

×
體積 (final)

V2

動(dòng)物實(shí)驗(yàn):

請(qǐng)根據(jù)您的 實(shí)驗(yàn)動(dòng)物和給藥方式 選擇適當(dāng)?shù)娜芙夥桨浮?

以下溶解方案都請(qǐng)先按照 In Vitro 方式配制澄清的儲(chǔ)備液,再依次添加助溶劑:
——為保證實(shí)驗(yàn)結(jié)果的可靠性,澄清的儲(chǔ)備液可以根據(jù)儲(chǔ)存條件,適當(dāng)保存;體內(nèi)實(shí)驗(yàn)的工作液,建議您現(xiàn)用現(xiàn)配,當(dāng)天使用;
以下溶劑前顯示的百分比是指該溶劑在您配制終溶液中的體積占比;如在配制過(guò)程中出現(xiàn)沉淀、析出現(xiàn)象,可以通過(guò)加熱和/或超聲的方式助溶

  • 方案 一

    請(qǐng)依序添加每種溶劑: 10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.38 mM); 澄清溶液

    此方案可獲得 ≥ 2.5 mg/mL(飽和度未知)的澄清溶液。

    1 mL 工作液為例,取 100 μL 25.0 mg/mL 的澄清 DMSO 儲(chǔ)備液加到 400 μL PEG300 中,混合均勻;再向上述體系中加入 50 μL Tween-80,混合均勻;然后再繼續(xù)加入 450 μL 生理鹽水 定容至 1 mL。

    生理鹽水的配制:將 0.9 g 氯化鈉,溶解于 ddH?O 并定容至 100 mL,可以得到澄清透明的生理鹽水溶液。
  • 方案 二

    請(qǐng)依序添加每種溶劑: 10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (6.38 mM); 澄清溶液

    此方案可獲得 ≥ 2.5 mg/mL(飽和度未知)的澄清溶液。

    1 mL 工作液為例,取 100 μL 25.0 mg/mL 的澄清 DMSO 儲(chǔ)備液加到 900 μL 20% 的 SBE-β-CD 生理鹽水水溶液 中,混合均勻。

    2 g SBE-β-CD(磺丁基醚 β-環(huán)糊精)粉末定容于 10 mL 的生理鹽水中,完全溶解至澄清透明。
動(dòng)物溶解方案計(jì)算器
請(qǐng)輸入動(dòng)物實(shí)驗(yàn)的基本信息:

給藥劑量

mg/kg

動(dòng)物的平均體重

g

每只動(dòng)物的給藥體積

μL

動(dòng)物數(shù)量

由于實(shí)驗(yàn)過(guò)程有損耗,建議您多配一只動(dòng)物的量
請(qǐng)輸入您的動(dòng)物體內(nèi)配方組成:
%
DMSO +
+
%
Tween-80 +
%
Saline
如果您的動(dòng)物是免疫缺陷鼠或者體弱鼠,建議 DMSO 中的在最后工作液體系中的占比盡量不超過(guò) 2%。
方案所需 助溶劑 包括:DMSO, ,均可在 MCE 網(wǎng)站選購(gòu)。 ,Tween 80,均可在 MCE 網(wǎng)站選購(gòu)。
計(jì)算結(jié)果
工作液所需濃度 : mg/mL
儲(chǔ)備液配制方法 : mg 藥物溶于 μL  DMSO(母液濃度為 mg/mL)。
您所需的儲(chǔ)備液濃度超過(guò)該產(chǎn)品的實(shí)測(cè)溶解度,以下方案僅供參考,如有需要,請(qǐng)與 MCE 中國(guó)技術(shù)支持聯(lián)系。
動(dòng)物實(shí)驗(yàn)體內(nèi)工作液的配制方法 : 取 μL DMSO 儲(chǔ)備液,加入 μL 。 μL ,混合均勻至澄清,再加 μL Tween 80,混合均勻至澄清,再加 μL 生理鹽水。
連續(xù)給藥周期超過(guò)半月以上,請(qǐng)謹(jǐn)慎選擇該方案。
請(qǐng)確保第一步儲(chǔ)備液溶解至澄清狀態(tài),從左到右依次添加助溶劑。您可采用超聲加熱 (超聲清洗儀,建議頻次 20-40 kHz),渦旋吹打等方式輔助溶解。
純度 & 產(chǎn)品資料

純度: 99.29%

參考文獻(xiàn)

完整儲(chǔ)備液配制表

* 請(qǐng)根據(jù)產(chǎn)品在不同溶劑中的溶解度選擇合適的溶劑配制儲(chǔ)備液;一旦配成溶液,請(qǐng)分裝保存,避免反復(fù)凍融造成的產(chǎn)品失效
儲(chǔ)備液的保存方式和期限:-80°C, 6 months; -20°C, 1 month。-80°C儲(chǔ)存時(shí),請(qǐng)?jiān)?個(gè)月內(nèi)使用,-20°C儲(chǔ)存時(shí),請(qǐng)?jiān)?個(gè)月內(nèi)使用。

可選溶劑 濃度 溶劑體積 質(zhì)量 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.5527 mL 12.7636 mL 25.5271 mL 63.8178 mL
5 mM 0.5105 mL 2.5527 mL 5.1054 mL 12.7636 mL
10 mM 0.2553 mL 1.2764 mL 2.5527 mL 6.3818 mL
15 mM 0.1702 mL 0.8509 mL 1.7018 mL 4.2545 mL
20 mM 0.1276 mL 0.6382 mL 1.2764 mL 3.1909 mL
25 mM 0.1021 mL 0.5105 mL 1.0211 mL 2.5527 mL
30 mM 0.0851 mL 0.4255 mL 0.8509 mL 2.1273 mL
40 mM 0.0638 mL 0.3191 mL 0.6382 mL 1.5954 mL
50 mM 0.0511 mL 0.2553 mL 0.5105 mL 1.2764 mL
60 mM 0.0425 mL 0.2127 mL 0.4255 mL 1.0636 mL
80 mM 0.0319 mL 0.1595 mL 0.3191 mL 0.7977 mL
100 mM 0.0255 mL 0.1276 mL 0.2553 mL 0.6382 mL
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產(chǎn)品名稱:
Begacestat
目錄號(hào):
HY-14175
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