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SAE0088

Sigma-Aldrich

Filipin complex ready made solution

from Streptomyces filipinensis, 5mg/ml in DMSO based solution

Synonym(s):

Filipin solution

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About This Item

UNSPSC Code:
12352200

Assay

≥90% (HPLC)

form

ready-to-use solution

storage condition

protect from light

shipped in

dry ice

storage temp.

−20°C

General description

Filipin Complex, the collective name given to family of isomeric polyene macrolides isolated from cultures of S. filipinensis, with Filipin III being the majority part of the complex.

Application

Filipin complex readymade solution has been used in the staining of HeLa cells for cytoskeletal imaging.
Filipin has been used in a double staining procedure as a probe for the detection of lipoproteins in polyacrylamide gel and immobilized on nitrocellulose membranes. It is also widely used to localize and quantitate unesterified cholesterol by virtue of a specific fluorescent complex.

Biochem/physiol Actions

Filipin is an antibiotic with antifungal functionality. Filipin complex has been found to alter cell membrane structure by interacting with the membrane sterols ergosterols and cholesterol. On binding to cholesterol, filipin shows fluorescence shift. As such, filipin complex has become a useful tool for diagnosis of Niemann-Pick type C disease, and for detection and quantification of cholesterol in cell membranes and lipid quantification in brain.

Other Notes

Filipin complex ready made solution is very sensitive to air and light. Upon receipt aliquot and store at -20°C. Avoid freeze thaw cycles.
Filipin complex is used in various concentrations depending on the specific protocol used. Dilute 5mg/ml stock solution with appropriate buffer according to the used protocol.
Filipin complex interaction with cholesterol alters the absorption and fluorescence spectra, for visualization with a fluorescence microscope use excitation at 340-380 nm and emission at 385-470 nm (Filipin fluorescent staining photo-bleaches very rapidly, thus the sample should be analyzed immediately).

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

188.6 °F - closed cup

Flash Point(C)

87 °C - closed cup


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Filipin recognizes both GM1 and cholesterol in GM1 gangliosidosis mouse brain
Arthur JR, et al.
Journal of Lipid Research, 52(7), 1345-1351 (2011)
The pentaene macrolide antibiotic filipin prefers more rigid DPPC bilayers: a fluorescence pressure dependence study
Castanho MRB, et al.
Biochimica et Biophysica Acta - Biomembranes, 1419(1), 1-14 (1999)
Analysis of cholesterol trafficking with fluorescent probes
Frederick R. Maxfield and Daniel Wustner
Methods in Cell Biology, 367-393 (2012)
A FRET sensor of C-terminal movement reveals VRAC activation by plasma membrane DAG signaling rather than ionic strength
Konig B, et al.
eLife, 8, e45421-e45421 (2019)
Nicole Collette et al.
Molecular therapy. Methods & clinical development, 23, 286-295 (2021-11-04)
Targeting host factors for anti-viral development offers several potential advantages over traditional countermeasures that include broad-spectrum activity and prevention of resistance. Characterization of host factors in animal models provides strong evidence of their involvement in disease pathogenesis, but the feasibility

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