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SAE0087

Sigma-Aldrich

Filipin III ready made solution

from Streptomyces filipinensis, 1mg/ml in DMSO based solution

Synonym(s):

Filipin III solution

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

Assay

≥95% (HPLC)

form

ready-to-use solution

storage condition

protect from light

shipped in

dry ice

storage temp.

−20°C

General description

Filipin III is a polyene macrolide antibiotic and the major component isolated from cultures of S. filipinensis. 1 Due to its ability to fluoresce and bind to cholesterol, Filipin has been widely
used as a probe for sterol location in biological membranes 2 and has been used clinically as a stain for free cholesterol in the study of Type C Niemann-Pick disease. 3 Filipin inhibits prion protein (PrP) endocytosis and causes the release of PrP from the plasma membrane. 4 Filipin III was found to trigger signaling responses in tobacco cells, including a NADPH oxidase-dependent production. 5. 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.

Application

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.

Other Notes

  • Filipin III solution is very sensitive to air and light. Upon receipt aliquot and store at -20°C avoid freeze thaw cycles.
  • Filipin III is used in various concentrations depending on the specific protocol used. Dilute 1mg/ml stock solution with appropriate buffer according to the used protocol.
  • Filipin III 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 1

Flash Point(F)

188.6 °F

Flash Point(C)

87 °C


Certificates of Analysis (COA)

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Yun-Qi Zhou et al.
Emerging microbes & infections, 11(1), 1135-1144 (2022-03-29)
The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its variants is threatening public health around the world. Endocytosis functions as an important way for viral infection, and SARS-CoV-2 bears no exception. However, the specific endocytic mechanism of
Nina H Pipalia et al.
Journal of lipid research, 47(2), 284-301 (2005-11-17)
Niemann-Pick disease type C (NPC) is an autosomal recessive genetic disorder manifested by abnormal accumulation of unesterified cholesterol and other lipids. We screened combinatorially synthesized chemical libraries to identify compounds that would partially revert cholesterol accumulation. Cultured CHO cells with
Ruochen Zang et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(50), 32105-32113 (2020-11-27)
Cholesterol 25-hydroxylase (CH25H) is an interferon (IFN)-stimulated gene that shows broad antiviral activities against a wide range of enveloped viruses. Here, using an IFN-stimulated gene screen against vesicular stomatitis virus (VSV)-SARS-CoV and VSV-SARS-CoV-2 chimeric viruses, we identified CH25H and its
M A Castanho et al.
The Journal of biological chemistry, 267(1), 204-209 (1992-01-05)
The alterations in the absorption and fluorescence spectra observed for the polyene antibiotics filipin and nystatin in the presence of cholesterol are due to an exciton interaction (polyene aggregates) and cannot be attributed to a specific sterol-antibiotic complex. Filipin and
Wen-Bin Zhang et al.
Acta neuropathologica communications, 11(1), 102-102 (2023-06-22)
Accumulating evidences reveal that cellular cholesterol deficiency could trigger the onset of Alzheimer's disease (AD). As a key regulator, 24-dehydrocholesterol reductase (DHCR24) controls cellular cholesterol homeostasis, which was found to be downregulated in AD vulnerable regions and involved in AD-related

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