CD47 蛋白, Human (HEK293, His)

CD47 Protein, Human (HEK293, His) is a polypeptide chain with His tag produced in HEK293 cells. CD47 is a prominent target in cancer immunotherapy.

靶向 CD47 是癌症免疫治疗的焦点。阻断 CD47 会触发先天免疫识别和消除癌细胞。CD47/SIRP-α 轴已被确定为先天抗癌免疫的重要调节因子，许多（如果不是全部）恶性肿瘤都会过度表达与吞噬细胞表达的 SIRP-α 结合的受体 CD47^[1] 。

1.2 µg/mL (100 µL/well) of immoblized recombinant human CD47-His can bind human SIRPa-Fc with a linear range of 20-65 ng/mL.
2.Immobilized Human SIRPA-Fc at 10 μg/mL (100 μl/well) can bind Human CD47-His .The ED₅₀ is 13.21 ng/mL
3. Immobilized Human CD47, His Tag at 2μg/ml (100μl/well) on the plate. Dose response curve for Human SIRP alpha, hFc Tag with the EC₅₀ of 46.8ng/ml determined by ELISA (QC Test).
4. Human CD47, His Tag captured on CM5 Chip via Anti-His Antibody can bind Human SIRP alpha, hFc Tag with an affinity constant of 18.9nM as determined in SPR assay (Biacore T200).
5.Measured by its binding ability in a functional ELISA. Immobilized Human SIRP alpha at 5 μg/mL (100 μL/well) can bind Biotinylated Human CD47 protein. The ED₅₀ for this effect is 388.5 ng/mL.

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  Measured by its binding ability in a functional ELISA. Immobilized Human SIRP alpha at 5 μg/mL (100 μL/well) can bind Biotinylated Human CD47 protein. The ED₅₀ for this effect is 388.5 ng/mL.

Human

HEK293

C-6*His

Q08722/NP_942088.1 (Q19-P139)

961  [NCBI]

QLLFNKTKSVEFTFCNDTVVIPCFVTNMEAQNTTEVYVKWKFKGRDIYTFDGALNKSTVPTDFSSAKIEVSQLLKGDASLKMDKSDAVSHTGNYTCEVTELTREGETIIELKYRVVSWFSPHHHHHH

30-45 kDa

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

无菌粉末

Lyophilized after extensive dialysis against PBS or 10 mM Tris-Citrate, 150 mM NaCl, pH 8.0 or 20 mM PB, 150 mM NaCl, pH 7.4.

<1 EU/μg, determined by LAL method.

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

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.

Room temperature in continental US; may vary elsewhere.

• [1]. Huang Y, et al. Targeting CD47: the achievements and concerns of current studies on cancer immunotherapy. J Thorac Dis. 2017 Feb;9(2):E168-E174.  [Content Brief]