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CYT-410

重組鼠粒細(xì)胞克隆刺激因子（rmG-CSF）

2μg/10μg/1mg

￥900/2280

Prospec

Background :
	A glycoprotein of MW 20 kDa containing internal disulfide bonds. It induces the survival, proliferation, and differentiation of neutrophilic granulocyte precursor cells and functionally activates mature blood neutrophils. Among the family of colony-stimulating factors, G-CSF is the most potent inducer of terminal differentiation to granulocytes and macrophages of leukemic myeloid cell lines. The synthesis of G-CSF can be induced by bacterial endotoxins , TNF , Interleukin-1 and GM-CSF . Prostaglandin E2 inhibits the synthesis of G-CSF. In epithelial, endothelial, and fibroblastic cells secretion of G-CSF is induced by Interleukin-17 .
	Description :
	Recombinant Mouse G-CSF produced in E.coli is a single, non-glycosylated, polypeptide chain containing 179 amino acids and having a molecular mass of 19 KD. Recombinant murine G-CSF is purified by proprietary chromatographic techniques.
	Physical Appearance:
	Sterile Filtered White lyophilized （freeze-dried） powder.
	Formulation:
	The protein was lyophilized with no additives.
	Solubility:
	It is recommended to reconstitute the lyophilized Recombinant G-CSF in sterile 18MΩ-cm H₂O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
	Stability:
	Lyophilized Mouse G-CSF although stable at room temperature for 3 weeks, should be stored desiccated below -18⁰C. Upon reconstitution Recombinant G-CSF should be stored at 4⁰C between 2-7 days and for future use below -18⁰C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please avoid freeze-thaw cycles.
	Purity:
	Greater than 98.0% as determined by: （a） Analysis by RP-HPLC. （b） Anion-exchange FPLC. （c） Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.
	Amino acid sequence:
	The sequence of the first five N-terminal amino acids was determined and was found to be Met-Val-Pro-Leu-Val.
	Dimers and aggregates:
	Less than 1% as determined by silver-stained SDS-PAGE gel.
	Biological Activity:
	ProSpec’s G-CSF is fully biologically active when compared to standard. The ED50, calculated by the dose-dependant proliferation of murine NFS-60 indicator cells （measured by ³H-thymidine uptake） is < 0.05 ng/ml, corresponding to a Specific Activity of 2 x 10⁷IU/mg.
	Endotoxin:
	Less than 0.1 ng/µg （IEU/µg） of Mouse G-CSF .
	Protein content:
	Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 0.51 as the extinction coefficient for a 0.1% （1mg/ml） solution. This value is calculated by the PC GENE computer analysis program of protein sequences （InliGenetics）. 2. Analysis by RP-HPLC, using a calibrated solution of G-CSF as a Reference Standard.
	Usage:
	Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

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