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Merck
CN

A1908

Asialofetuin from fetal calf serum

Type II (Sigma designation)

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.61
MDL number:
Form:
powder
Biological source:
bovine
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biological source

bovine

Quality Segment

type

Type II (Sigma designation)

form

powder

technique(s)

activity assay: suitable, inhibition assay: suitable

impurities

salt, essentially free, ≤1.0% N-acetylneuraminic acid

solubility

H2O: soluble 1.0 mg/mL, clear to hazy, colorless to very faintly yellow

storage temp.

2-8°C

Application

Asialofetuin from fetal calf serum is suitable for use:
  • in the assay of the lactose binding activity of the galectin-7 by immunodetection of in situ binding activity to asialofetuin immobilized on nitrocellulose
  • in the inhibition of zona pellucida hardening of mouse oocytes
  • as an acceptor in sialyltransferase enzyme activity assay
Incorporation of asialofetuin (AF) in liposomes strongly enhance delivery to and endocytosis by cells displaying the AF receptor, notably hepatocytes. This provides a very efficient route for gene therapy.

Biochem/physiol Actions

Asialofetuin (AF) binds to asialoglycoprotein receptor (ASGP-R) and is employed as a ligand for drug delivery to the hepatocytes. It aids serum-resistant lipoplexes for efficient gene deliver into the HepG2 (human hepatoblastoma) cells.
Feutins are glycoproteins that belong to the cystatin superfamily. They are characterized by the presence of two tandemly arranged cystatin-like domains and an unrelated domain. It binds to transforming growth factor (TGF)-β/BMP (bone morphogenic protein) cytokines.

Preparation Note

Enzymatic cleavage using neuraminidase


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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

监管及禁止进口产品

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Global Trade Item Number

SKUGTIN
A1908-50MG04061833257890
A1908-10MG04061831151886
A1908-5MG04061831151893