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Cyclosporin A

from Tolypocladium inflatum, BioReagent, for molecular biology, ≥95%

Antibiotic S 7481F1, Cyclosporine
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

biological source

Tolypocladium inflatum


for molecular biology

product line







dichloromethane: 9.80-10.20 mg/mL, clear, colorless to faintly yellow

antibiotic activity spectrum


Mode of action

enzyme | inhibits

storage temp.


SMILES string




InChI key


Gene Information

human ... PPIA(5478)

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General description

Cyclosporin A is a fungal metabolite with immunosuppressive properties. Cyclosporin A is a non-polar cyclic oligopeptide produced by the fungus Tolypocladium inflatum. It is a potent immunosuppressive agent, affecting primarily T-lymphocytes.
Chemical structure: peptide


Cyclosporin A was suitable for:

  • Using in in vivo Neovascularization Assay, to subcutaneously inject the mice daily for suppressing the immune response.
  • Measuring the multiple drug resistance transporter activity in putative cancer stem/progenitor cells.
  • mRNA transcription studies
  • analytical standard


5, 10 mg in glass bottle

Biochem/physiol Actions

A fungal metabolite possessing potent immunosuppressive properties. It inhibits the T-cell receptor signal transduction pathway via the formation of cyclosporin A−cyclophilin complex that inhibits calcineurin (protein phosphatase 2B). Inhibits nitric oxide synthesis induced by interleukin 1α, lipopolysaccharides and TNFα. Can block cytochrome c release from mitochondria.
Cyclosporin A has been shown to inhibit the functioning of several nuclear proteins involved in T-cell activation at the level of mRNA transcription. It forms a complex with its intracellular receptor cyclophilin, which can then bind to calcineurin, a Ca2+ - and calmodulin-dependent protein phosphatase, inhibiting its enzymatic activity. It was found to suppress the replication of hepatitis C virus genome in cultured hepatocytes.


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Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Carc. 1B - Repr. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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More Documents

Quotes and Ordering

R A Nichols et al.
The Journal of biological chemistry, 269(38), 23817-23823 (1994-09-23)
In response to Ca2+ entry, several prominent brain nerve terminal phosphoproteins undergo dephosphorylation, but the relation between dephosphorylation and neurotransmitter release is unknown. Using the immunosuppressants cyclosporin A (CsA) and L-683,590 (FK-520) to inhibit specifically the Ca2+/calmodulin-dependent protein phosphatase calcineurin
Mi-Ok Lee et al.
Arteriosclerosis, thrombosis, and vascular biology, 32(2), 343-352 (2011-11-15)
A number of studies have revealed that stress signaling and subsequent stress responses in stem/progenitor cells are responsible for attenuated regeneration or degenerative disease. Because ionizing radiation (IR), which sensitizes diverse types of stem cells, reportedly induces cardio-circulatory diseases, we
E A Emmel et al.
Science (New York, N.Y.), 246(4937), 1617-1620 (1989-12-22)
One action of cyclosporin A thought to be central to many of its immunosuppressive effects is its ability to inhibit the early events of T lymphocyte activation such as lymphokine gene transcription in response to signals initiated at the antigen
N A Clipstone et al.
The Journal of biological chemistry, 269(42), 26431-26437 (1994-10-21)
The calcium/calmodulin-regulated phosphatase calcineurin (CN) is the site of action of the immunosuppressive drugs cyclosporin A (CsA) and FK506. CN has recently been established as a key signaling enzyme in the T cell signal transduction cascade and an important regulator
Koichi Watashi et al.
Hepatology (Baltimore, Md.), 38(5), 1282-1288 (2003-10-28)
Persistent infection of hepatitis C virus (HCV) is a major cause of liver diseases such as chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma. Searching for a substance with anti-HCV potential, we examined the effects of a variety of compounds on

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