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C9492

Sigma-Aldrich

Chaetocin from Chaetomium minutum

≥95% (HPLC)

Synonym(s):

(+)-Chaetocin A

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About This Item

Empirical Formula (Hill Notation):
C30H28N6O6S4
CAS Number:
28097-03-2
Molecular Weight:
696.84
MDL number:
MFCD00133163
UNSPSC Code:
12352202
PubChem Substance ID:
24893002
NACRES:
NA.77

Quality Level

200

assay

≥95% (HPLC)

form

powder

storage temp.

2-8°C

SMILES string

CN1C(=O)C23CC4(C(Nc5ccccc45)N2C(=O)C1(CO)SS3)C67CC89SSC(CO)(N(C)C8=O)C(=O)N9C6Nc%10ccccc7%10

InChI

1S/C30H28N6O6S4/c1-33-21(39)27-11-25(15-7-3-5-9-17(15)31-19(25)35(27)23(41)29(33,13-37)45-43-27)26-12-28-22(40)34(2)30(14-38,46-44-28)24(42)36(28)20(26)32-18-10-6-4-8-16(18)26/h3-10,19-20,31-32,37-38H,11-14H2,1-2H3

InChI key

PZPPOCZWRGNKIR-UHFFFAOYSA-N

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General description

Chaetocin is a fungal metabolite with antimicrobial and cytostatic activity. It belongs to the 3,6-epidithio-diketopiperazines class of which gliotoxin, sporidesmin, aranotin, oryzachloride, verticillin A and the melinacidins are members. Chaetocin is a molecular dimer of two five-membered rings cis fused.

Application

Chaetocin from Chaetomium minutum has been used to determine its effects on sensitization of various cells. It has also been used to determine the biological functions of OS-induced heterochromatin formation.

Biochem/physiol Actions

Chaetocin is a competitive inhibitor for S-adenosylmethionine. The specificity of chaetocin for SU(VAR)3-9 makes this compound an excellent tool for the study of heterochromatin-mediated gene repression.
Chaetocin is an antibacterial mycotoxin. It is a specific inhibitor of lysine-specific histone methyltransferase making the compound useful in the study of heterochromatin mediated gene repression. Chaetocin is a selective competitive inhibitor of thioredoxin reductase-1 (TrxR1), a putative mechanism of its anticancer activity.
Methyltransferase making the compound useful in the study of heterochromatin mediated gene repression.

Preparation Note

Soluble in DMSO. At 1 mg/ml the solution is stable for 1 week at 2-8 °C.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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The epipolythiodioxopiperazine (ETP) class of fungal toxins: distribution, mode of action, functions and biosynthesis
Gardiner D M, et al.
Microbiology, 151(4), 1021-1032 (2005)
Jennifer D Tibodeau et al.
Antioxidants & redox signaling, 11(5), 1097-1106 (2008-11-13)
We recently reported that the antineoplastic thiodioxopiperazine natural product chaetocin potently induces cellular oxidative stress, thus selectively killing cancer cells. In pursuit of underlying molecular mechanisms, we now report that chaetocin is a competitive and selective substrate for the oxidative
Justin Kim et al.
Journal of the American Chemical Society, 132(41), 14376-14378 (2010-09-28)
A highly stereoselective and systematic strategy for the introduction of polysulfides in the synthesis of epipolythiodiketopiperazines is described. We report the first total synthesis of dimeric epitri- and epitetrathiodiketopiperazines.
Identification of a specific inhibitor of the histone methyltransferase SU (VAR) 3-9
Greiner D, et al.
Nature Chemical Biology, 1(3), 143-143 (2005)
Yoon-Mi Lee et al.
Hepatology (Baltimore, Md.), 53(1), 171-180 (2010-12-09)
Chaetocin, an antibiotic produced by Chaetomium species fungi, was recently found to have antimyeloma activity. Here we examined whether chaetocin has anticancer activities against solid tumors. Chaetocin inhibited the growth of mouse and human hepatoma grafts in nude mice. Immunohistochemical
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