1. 重组蛋白
  2. Cytokines and Growth Factors
  3. TGF-beta Superfamily Neurotrophic Factors
  4. GDNF family
  5. Glial Cell Line-derived Neurotrophic Factor (GDNF)
  6. GDNF 蛋白, Human

GDNF 蛋白, Human

目录号: HY-P7182
COA 产品使用指南

Glial-cell-line-derived neurotrophic factor (GDNF) 是一种属于 GDNF 家族配体 (GFL) 的神经营养因子,可促进多巴胺神经元的存活。GDNF 对哺乳动物神经元表现出多种神经保护作用。GDNF 蛋白, Human (HEK293) 在大肠杆菌中表达产生的,由 134 个氨基酸(S78-I211) 组成。

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  • 生物活性

  • 技术参数

  • 产品性质

  • 产品资料

  • 参考文献

描述

Glial-cell-line-derived neurotrophic factor (GDNF), a neurotrophic factor belongs to the GDNF family ligands (GFLs)., promotes survival of dopamine neurons. GDNF demonstrates a variety of neuroprotective roles for mammalian neurons[1]. GDNF Protein, Human is produced in E.coil, and consists of 134 amino acids (S78-I211).

研究背景

胶质细胞源性神经营养因子 (GDNF) 是一种 134 个氨基酸的蛋白质,属于 GDNF 家族配体 (GFL)。GDNF 蛋白广泛分布于中枢和周围神经系统。GDNF 的合成和分泌发生在许多细胞类型中,例如星形胶质细胞、少突胶质细胞和雪旺细胞等神经胶质细胞;运动神经元(MN);和骨骼肌[1]
成熟的人类 GDNF 与小鼠、大鼠和犬科动物 GDNF 蛋白具有 91-92% 的氨基酸序列同一性。而小鼠 GDNF 与大鼠 GDNF 蛋白具有 99% 的氨基酸序列同一性。
GDNF 最初是从培养的 B49 大鼠神经胶质细胞中分离出来的,并被发现通过促进多巴胺摄取来增强原代培养物中多巴胺能神经元的存活和分化。与 TGF-β 超家族的其他成员类似,GDNF 首先作为前体蛋白(pro-GDNF)合成。经过一系列的蛋白质裂解和加工,211个氨基酸的pro-GDNF最终转化为活性且成熟的GDNF形式。GDNF 能够触发受体酪氨酸激酶 RET 磷酸化,其下游效应已被发现可促进神经元健康和存活。GDNF 与其受体的结合触发多个细胞内信号传导途径,这些信号传导途径在促进神经元-神经元和神经元-靶组织相互作用的发育、存活和维持中发挥作用。GDNF 的合成和调节已被证明在许多疾病、衰老、运动和成瘾中发生改变。GDNF 的神经保护作用可用于开发治疗方法,以改善神经退行性疾病,如肌萎缩侧索硬化症 (ALS)[1]
GDNF 是调节 MN 存活的有效神经营养因子在周围神经系统中。GDNF 可防止 MN 在体内发育过程中发生凋亡,减少运动神经病和变性动物模型中 MN 的损失,使 MN 免受轴索切断术诱导的细胞死亡的影响,并保护 MN 免受慢性变性。脑内 GDNF 给药对黑质纹状体多巴胺系统具有保护和修复作用,这可能对帕金森病新治疗策略的开发具有影响[1][2]

体外研究
(In Vitro)

Recombinant human GDNF (100 ng/mL; 24 hours) increases transepithelial electric resistance (TER) significantly to 2.99 of baseline (2.23-fold of controls) in Caco2 cells. GDNF contributes to IEB maturation[3].

生物活性

1.The ED50 is <5 μg/mL as measured by C6 cells.
2.Measured in a cell proliferation assay using SH-SY5Y human neuroblastoma cells. The ED50 for this effect is ≤6.561 ng/mL, corresponding to a specific activity is ≥1.524×105 units/mg in the presence of Recombinant Human GFR alpha -1/GDNF R alpha -1 .

  • Measured in a cell proliferation assay using SH-SY5Y human neuroblastoma cells. The ED50 for this effect is 1.972 ng/mL, corresponding to a specific activity is 5.07×105 units/mg in the presence of Recombinant Human GFR alpha -1/GDNF R alpha -1 .
种属

Human

表达系统

E. coli

标签

Tag Free

蛋白编号

P39905-1 (S78-I211)

基因 ID
蛋白结构
N-term
GDNF (S78-I211)
Accession # P39905
C-term
中文名
重组人胶质细胞源性神经营养因子 (GDNF)
同用名
rHuGDNF; ATF
氨基酸序列

SPDKQMAVLPRRERNRQAAAANPENSRGKGRRGQRGKNRGCVLTAIHLNVTDLGLGYETKEELIFRYCSGSCDAAETTYDKILKNLSRNRRLVSDKVGQACCRPIAFDDDLSFLDDNLVYHILRKHSAKRCGCI

分子量

Approximately 16 kDa

纯度
  • Greater than 95% as determined by reducing SDS-PAGE.
性状

无菌粉末

组分

Lyophilized after extensive dialysis against PBS or 50 mM Tris-HCL, 300 mM NaCL, pH 8.0 or PBS, pH 7.4, 8% trehalose.

内毒素含量

<1 EU/μg, determined by LAL method.

复溶方法

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O or PBS. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

保存条件 & 期限

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

运输条件

Room temperature in continental US; may vary elsewhere.

文件资料
参考文献
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.

  • 复溶计算器

  • 重组蛋白稀释计算器

  • 比活力计算器

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

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

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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GDNF Protein, Human
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