FILIPIN III Property

Melting point:

163-180° (Bergy, Eble)

alpha 

D25 -245° (c = 0.8 in DMF)

Boiling point:

913.9±65.0 °C(Predicted)

Density 

1.161±0.06 g/cm3(Predicted)

storage temp. 

−20°C

solubility 

Soluble in Methanol (up to 10 mg/ml)

form 

solid

pka

12.77±0.70(Predicted)

color 

White or light yellow

Stability:

Stable for 1 year from date of purchase as supplied. Solutions in methanol may be stored under inert gas at -20°C for up to 2 months.

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

RTECS 

RN9800000

HS Code 

2932990090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

FILIPIN III Chemical Properties,Usage,Production

Description

Cholesterol is both an important structural component of cell membranes and an early intermediate in hormone and bile acid biosynthesis. The localization and measurement of cholesterol in cells is therefore of great interest. Filipin is the collective name given to four isomeric polyene macrolides isolated from cultures of S. filipinensis; Filipin III is the predominant isomer and the one used in most studies. Filipin binds to cholesterol in membranes, forming ultrastructural aggregates and complexes which can be visualized by freeze-fracture electron microscopy. The binding of cholesterol also decreases the intrinsic fluorescence of Filipin, and this property has also been used to detect cholesterol in membrane fractions.

Uses

Filipin III is the major component of the filipin complex, a family of pentaene antifungal metabolites first isolated from Streptomyces filipinensis and reported by researchers at Upjohn in 1955. Filipin III is a potent broad spectrum antifungal agent that also exhibits antitumor and antiviral activities. Filipin III acts by binding cell membrane sterols, disrupting membrane integrity. This sterol selectivity has led to the use of filipin III as a routine diagnostic probe for quantifying cholesterol in mammalian cells.

Uses

Cholesterol is both an important structural component of cell membranes and an early intermediate in hormone and bile acid biosynthesis. The localization and measurement of cholesterol in cells is therefore of great interest. Filipin is the collective name given to four isomeric polyene macrolides isolated from cultures of S. filipinensis; Filipin III is the predominant isomer and the one used in most studies. Filipin binds to cholesterol in membranes, forming ultrastructural aggregates and complexes which can be visualized by freeze-fracture electron microscopy. The binding of cholesterol also decreases the intrinsic fluorescence of Filipin, and this property has also been used to detect cholesterol in membrane fractions.[Cayman Chemical]

Uses

Produces arthritis rapidly in rabbits: Pras, Weissman, Drug Trade News, July 4, 1966, p 40; as a sterol probe in freeze-fracture cytochemistry.

Definition

ChEBI: A macrolide that is the major component of a mixture of four isomeric polyene macrolides isolated from Streptomyces filipinensis.

Biochem/physiol Actions

Filipin is a polyene macrolide antibiotic and antifungal. The antifungal mechanism of action may be due to altering membrane permeability and associated functions by binding to membrane sterols. Filipin inhibits prion protein (PrP) endocytosis and causes the release of PrP from the plasma membrane.

storage

Store at -20°C

References

1) Smejkal and Hof (1994),?Cholesterol-specific probe for lipoproteins immobilized on nitrocellulose membranes; Biotechniques,?16?68 2) Bornig and Geyer ?(1974),?Staining of cholesterol with the fluorescent antibiotic “filipin”; Acta Histochemica,?50?110 3) Huo?et al. (2003),?Lipid rafts/caveolae are essential for insulin-like growth factor-1 receptor signaling during 3T3-L1 preadipocyte differentiation induction; J. Biol. Chem.,?278?11561 4) Marella?et al. (2002),?Filipin prevents pathological prion protein accumulation by reducing endocytosis and inducing cellular PrP release; J. Biol. Chem.,?277?25457