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  1. Metabolic Enzyme/Protease Apoptosis Protein Tyrosine Kinase/RTK NF-κB Immunology/Inflammation
  2. Endogenous Metabolite Ferroptosis ROS Kinase Keap1-Nrf2 Reactive Oxygen Species
  3. L-Cystine

L-Cystine  (Synonyms: L-胱氨酸)

目錄號(hào): HY-N0394 純度: ≥98.0%
COA 產(chǎn)品使用指南

L-Cystine 是具有口服活性的 L-Cysteine (HY-Y0337) 的細(xì)胞外形式,存在于植物和動(dòng)物的蛋白質(zhì)中。L-Cystine 升高 Nrf2 蛋白表達(dá)含量并激活Nrf2 轉(zhuǎn)錄因子。L-Cystine 減少了 ROS 的產(chǎn)生,并保護(hù)細(xì)胞免受氧化劑或 Doxorubicin (HY-15142A) 誘導(dǎo)的凋亡 (apoptosis)。L-Cystine 與 L-theanine (HY-15121) 聯(lián)合使用通過提高谷胱甘肽 (GSH) 水平和 T 輔助細(xì)胞2 (Th2) 介導(dǎo)的反應(yīng),增強(qiáng)了抗原特異性 IgG 的產(chǎn)生。L-Cystine 有望用于囊性尿癥和腎結(jié)石的研究。

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L-Cystine Chemical Structure

L-Cystine Chemical Structure

CAS No. : 56-89-3

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Other Forms of L-Cystine:

MCE 顧客使用本產(chǎn)品發(fā)表的 1 篇科研文獻(xiàn)

  • 生物活性

  • 純度 & 產(chǎn)品資料

  • 參考文獻(xiàn)

生物活性

L-Cystine is an orally active extracellular form of L-Cysteine (HY-Y0337), occurring in proteins of plants and animals. L-Cystine elevates Nrf2 protein expression and activates Nrf2 transcription factor. L-cystine reduces ROS generation and protects against oxidant- or Doxorubicin (HY-15142A)-induced apoptosis. L-Cystine combined with L-theanine (HY-15121) enhances the production of antigen-specific IgG by increasing glutathione (GSH) levels and T helper 2 (Th2) mediated responses in mice. L-Cystine is promising for research of cystinuria and kidney stones[1][2][3][4][5][6]

IC50 & Target

Human Endogenous Metabolite

 

細(xì)胞效力
(Cellular Effect)
Cell Line Type Value Description References
KB 3-1 IC50
3.12 mM
Compound: cystine
Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay
Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay
[PMID: 21657271]
KB-V1 IC50
2.14 mM
Compound: cystine
Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay
Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay
[PMID: 21657271]
體外研究
(In Vitro)

L-Cystine (83 μM 或 200 μM, 24 或 72 小時(shí)) 可有效逆轉(zhuǎn) Sulfasalazine (HY-14655) 和 Erastin (HY-15763) 在 Huh6 細(xì)胞中的生長(zhǎng)抑制作用[1]。
L-Cystine ( 0.8 mM, 4 小時(shí)) 在 HeLa 細(xì)胞中以 Keap1 依賴的方式誘導(dǎo) Nrf2 蛋白表達(dá)含量升高[6]。

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

Cell Viability Assay[1]

Cell Line: Huh6 and Huh7 cells
Concentration: 83 μM or 200 μM
Incubation Time: 72 h or 24 h
Result: The degree of growth inhibition by Sulfasalazine (HY-14655) or Erastin (HY-15763) was greater in medium containing a physiological level of 83 μM L-cystine than in medium containing 200 μM L-cystine in Huh6 and Huh7 cells.

Western Blot Analysis[6]

Cell Line: HeLa cells
Concentration: 0.2 mM
Incubation Time: 4 h
Result: Was sufficient for producing Nrf2 protein elevation at 0.2 mM in HeLa cells.

Western Blot Analysis[6]

Cell Line: HeLa cells
Concentration: 0.8 mM
Incubation Time: 4 h
Result: Induced Nrf2 in a Keap1-dependent manner in HeLa cells.
體內(nèi)研究
(In Vivo)

L-Cystine (280 mg/kg, 口服, 11 天) 與 L-theanine (HY-15121) 一起給藥,部分通過提高小鼠谷胱甘肽 (GSH) 水平和 T helper 2 (Th2) 介導(dǎo)的應(yīng)答來(lái)增強(qiáng)抗原特異性 IgG 的產(chǎn)生[2]。
L-Cystine (200 mg/kg, 口服, 11 天) 與 L-theanine (HY-15121) (80 mg/kg, 口服, 11 天) 在 DNP-KLH 抗原刺激后 6 小時(shí)顯著降低小鼠血清 IL-10/IFN-γ 比值,但在 DNP-KLH 抗原刺激后 24 小時(shí)升高血清 IL-10/IFN-γ 比值[2]。

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

Animal Model: Nine-week-old female BALB/c mice[2]
Dosage: 140, 280 and 560 mg/kg
Administration: p.o. administration for 11 days
Result: Significantly increased IgG and IgM antibody production administrated with L-theanine (HY-15121) after DNP-dextran and DNP-KLH antigenic stimulation in mice.
分子量

240.30

Formula

C6H12N2O4S2

CAS 號(hào)
性狀

固體

顏色

White to off-white

中文名稱

L-胱氨酸

結(jié)構(gòu)分類
初始來(lái)源
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): 

0.1 M NaOH 中的溶解度 : 3.33 mg/mL (13.86 mM; ultrasonic and warming and adjust pH to 11 with NaOH and heat to 70°C)

0.1 M HCL 中的溶解度 : 2.5 mg/mL (10.40 mM; 超聲助溶; 酸性條件溶解 (HCL 調(diào)節(jié),pH≈2))

DMSO 中的溶解度 : < 1 mg/mL (insoluble or slightly soluble)

H2O 中的溶解度 : < 0.1 mg/mL (insoluble)

配制儲(chǔ)備液
濃度 溶劑體積 質(zhì)量 1 mg 5 mg 10 mg
1 mM 4.1615 mL 20.8073 mL 41.6146 mL
5 mM 0.8323 mL 4.1615 mL 8.3229 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)過程有損耗,建議您多配一只動(dòng)物的量
計(jì)算結(jié)果
工作液所需濃度 : mg/mL
純度 & 產(chǎn)品資料

純度: ≥98.0%

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
0.1 M HCL / 0.1 M NaOH 1 mM 4.1615 mL 20.8073 mL 41.6146 mL 104.0366 mL
5 mM 0.8323 mL 4.1615 mL 8.3229 mL 20.8073 mL
10 mM 0.4161 mL 2.0807 mL 4.1615 mL 10.4037 mL
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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產(chǎn)品名稱:
L-Cystine
目錄號(hào):
HY-N0394
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