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C2997

Sigma-Aldrich

Cytosporone B

≥98% (HPLC), powder, nuclear receptor Nur77 agonist

Synonyme(s) :

3,5-Dihydroxy-2-(1-oxooctyl)benzeneacetic acid ethyl ester, Csn-B, Csn-B; 3,5-Dihydroxy-2-(1-oxooctyl)-benzeneacetic acid, ethyl ester

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About This Item

Formule empirique (notation de Hill):
C18H26O5
Numéro CAS:
321661-62-5
Poids moléculaire :
322.40
Numéro MDL:
MFCD12912406
Code UNSPSC :
12352200
ID de substance PubChem :
329775016
Nomenclature NACRES :
NA.77

product name

Cytosporone B, ≥98% (HPLC)

Niveau de qualité

100

Pureté

≥98% (HPLC)

Forme

powder

Couleur

white to off-white

Solubilité

DMSO: >20 mg/mL

Température de stockage

−20°C

Chaîne SMILES 

CCCCCCCC(=O)c1c(O)cc(O)cc1CC(=O)OCC

InChI

1S/C18H26O5/c1-3-5-6-7-8-9-15(20)18-13(11-17(22)23-4-2)10-14(19)12-16(18)21/h10,12,19,21H,3-9,11H2,1-2H3

Clé InChI

UVVWQQKSNZLUQA-UHFFFAOYSA-N

Application

Cytosporone B has been used:
  • as a positive control and NR4A1 agonist in NR4A1 reporter gene assay
  • for Nr4a1 activation
  • to treat OVX mice and study its effect on migration of osteoclast precursor

Actions biochimiques/physiologiques

Cytosporone B (Csn-B) is the first naturally occurring agonist for nuclear orphan receptor Nur77. It binds with high affinity (IC50=0.278 nM) to the ligand-binding domain of Nur77 and stimulates Nur77-dependent activities.

Nur77 is a nuclear receptor/transcription factor. A physiological ligand for Nur77 is as yet unknown, but there is increasing interest in Nur77 because of its known activities. Translocation of Nur77 from the nucleus to mitochondria initiates cell apoptosis, making it a potential target for cancer treatment. Nur77 is also involved in glucose homeostasis; it induces genes involved in gluconeogenesis. Csn-B physically binds to Nur77 and activates its transactivational activity and translocation to mitochondria to induce apoptosis. It inhibits cancer cell proliferation and tumor growth.
Cytosporone B is a fungal metabolite closely related to phomposin C. It is the first known agonist for the nuclear orphan receptor Nur77. It binds with high affinity (IC50 = 0.278 nM) to the ligand-binding domain of Nur77 and stimulates Nur77-dependent activities.

Nur77 is a nuclear receptor/transcription factor with no known physiological ligand, but there is increasing interest in Nur77 because of its known activities. Translocation of Nur77 from the nucleus to mitochondria initiates apoptosis, making it a potential target for cancer chemotherapy. Nur77 also induces genes involved in gluconeogenesis. Csn-B activates the Nur77 translocation to mitochondria to induce apoptosis, inhibiting cancer cell proliferation and tumor growth.

Pictogrammes

Exclamation mark
GHS07

Mention d'avertissement

Warning

Mentions de danger

H302

Classification des risques

Acute Tox. 4 Oral

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Aravind T Reddy et al.
PloS one, 15(2), e0229256-e0229256 (2020-02-23)
Cigarette smoke (CS) contains multiple gaseous and particulate materials that can cause lung inflammation, and smoking is the major cause of chronic obstructive pulmonary disease (COPD). We sought to determine the mechanisms of how CS triggers lung inflammation. Nur77, a
Mohammad Ishaq et al.
Innate immunity, 26(8), 746-758 (2020-09-15)
Nuclear hormone receptor ligands are known to modulate innate immunity by dampening the immune response induced by pathogens. Here, we report that unlike other ligands, 3,3',5-triiodo-l-thyronine (T3) induced the type 1 IFN response and expression of IFN-stimulated genes (ISGs). T3
Pro-angiogenic Ginsenosides F1 and Rh1 Inhibit Vascular Leakage by Modulating NR4A1
Kang JI, et al.
Scientific reports, 9(1), 4502-4502 (2019)
Myeloid receptor CD36 is required for early phagocytosis of myocardial infarcts and induction of Nr4a1-dependent mechanisms of cardiac repair
Dehn S and Thorp EB
Faseb Journal, 254-264 (2017)
Benoit Egarnes et al.
PloS one, 12(10), e0186639-e0186639 (2017-10-21)
The transcription factor NR4A1 has emerged as a pivotal regulator of the inflammatory response and immune homeostasis. Although contribution of NR4A1 in the innate immune response has been demonstrated, its role in host defense against viral infection remains to be
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