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关于此项目
Biological source:
human
Recombinant:
expressed in HEK 293 cells
Assay:
≥95% (SDS-PAGE)
Form:
lyophilized powder
Mol wt:
dimer 35-45 kDa (glycosylated)
Impurities:
≤1 EU/μg
产品名称
干细胞因子 人, SCF, recombinant, expressed in HEK 293 cells, suitable for cell culture
biological source
human
recombinant
expressed in HEK 293 cells
assay
≥95% (SDS-PAGE)
form
lyophilized powder
potency
≤200 ng/mL ED50
quality
endotoxin tested
mol wt
dimer 35-45 kDa (glycosylated)
packaging
pkg of 5x10 μg, pkg of 10 μg, pkg of 100 μg
storage condition
avoid repeated freeze/thaw cycles
technique(s)
cell culture | mammalian: suitable
impurities
≤1 EU/μg
UniProt accession no.
storage temp.
−20°C
Quality Level
Gene Information
human ... KITLG(4254)
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General description
KITLG(KIT 配体)基因定位于人类染色体 12q21.32。
Biochem/physiol Actions
干细胞因子(SCF),也称为c-kit配体(KL)、青灰因子(SLF)和肥大细胞生长因子(MGF),是一个30 kDa的糖蛋白,对各种组织具有广泛的活性,包括造血细胞、色素细胞和原生殖细胞。
干细胞因子(SCF),也称为c-kit配体(KL)、青灰因子(SLF)和肥大细胞生长因子(MGF),是一个30 kDa的糖蛋白,对各种组织具有广泛的活性,包括造血细胞、色素细胞和原生殖细胞。SCF由内皮细胞、成纤维细胞和骨髓基质细胞分泌,以膜结合形式存在,可被切割并释放可溶形式。两种形式均能有效促进小鼠骨髓细胞的克隆形成,但膜结合的SCF在促进体内造血方面更有效,表明其在造血细胞和基质细胞之间的细胞相互作用中发挥作用。可溶形式被认为是以非共价连接的二聚体形式存在于溶液中。SCF在结构上与M-CSF(CSF-1)和Flt-3/Flk-2配体(FL)相关,他们大小相近,并且均具有跨膜和可溶形式、四个保守半胱氨酸以及可变剪接外显子位置,但它们几乎没有序列同源性。SCF自身是一种适中的集落刺激因子。然而,当存在其他细胞因子时,如EPO、TPO、GM-CSF、G-CSF、M-CSF、IL-3和IL-7,SCF是一种有效的共刺激剂,可发挥协同作用以增加骨髓、红细胞或淋巴谱系集落的大小,并且不影响祖细胞的谱系分化。
来源于颗粒细胞的干细胞因子(SCF)可有效促进卵泡发育和卵母细胞成熟。SCF 控制肿瘤的发展和进展。肝细胞癌中可见 SCF 基因表达升高。
Preparation Note
SCF 在人 HEK 293 细胞中以糖基化单体形式表达,而由于糖基化,它的表观分子质量为 35-45 kDa。在人 293 细胞中的生产提供了真正的糖基化。糖基化有助于细胞生长培养基和其他应用中的稳定性。
Analysis Note
通过人 TF-1 细胞(人红白血病指示细胞系)增值的剂量依赖性刺激测定比活性。
Legal Information
HumanKine is a registered trademark of Proteintech Group, Inc. and Humanzyme, Inc
存储类别
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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