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Merck

SML2161

Sigma-Aldrich

STA-21

≥95% (HPLC)

Synonym(e):

(±)-Deoxytetrangomycin, (±)-Ochromycinone, 3,4-Dihydro-8-hydroxy-3-methylbenz[a]anthracene-1,7,12(2H)-trione, NSC 628869, STA 21, STA21

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About This Item

Empirische Formel (Hill-System):
C19H14O4
CAS-Nummer:
Molekulargewicht:
306.31
MDL-Nummer:
UNSPSC-Code:
12352200
NACRES:
NA.77

Assay

≥95% (HPLC)

Form

powder

Farbe

yellow to brown

Löslichkeit

DMSO: 2 mg/mL, clear

Lagertemp.

−20°C

SMILES String

CC1CC(C(C(C(C(C=CC=C2O)=C2C3=O)=O)=C3C=C4)=C4C1)=O

Anwendung

STA-21 has been used as a signal transducer and activator of transcription 3 (STAT3) inhibitor to study its effects on glioblastoma and primary glioblastoma cells. It has also been used as a STAT3 dimerization inhibitor to study its effects on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) production in human lung cancer cell line.

Biochem./physiol. Wirkung

STA-21 is a STAT3 inhibitor that reduces the constitutively high STAT3 transcriptional activity in Caov-3 and MDA-MB-435s cultures (by 9.125- and 5.765-fold, respectively, post 48-hr 20 μM treatment) by disrupting STAT3 homodimerization, an essential process for STAT3 nuclear localization and DNA-binding activity. STA-21 selectively inhibits the growth and survival of breast carcinoma cells with constitutive Stat3 signaling (26%, 25%, 56% apoptotic cells, respectively, in MDA-MB-231, MDA-MB-435s, and MDA-MB-468 cultures, respectively, post 48-hr 20 μM treatment) but not those without (<10% apoptosis in MCF7, MDA-MB-453, HSF cultures post 48-hr 20 μM treatmen). STA-21 is reported to alleviate autoimmune inflammation in a murine model of rheumatoid arthritis (RA; 0.5 mg/kg; 3X i.p./week) and reduce airway inflammation in allergic mice with psoriatic inflammation (20 μg/mouse/day topically) in vivo.

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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Sheikh Fayaz Ahmad et al.
Immunobiology, 222(2), 206-217 (2016-10-09)
We set out to investigate the influence of STA-21, a dynamic STAT-3 inhibitor, on the expansion and progression of rheumatoid arthritis (RA), and to determine its potential mechanisms of action in a mouse model of collagen antibody-induced arthritis (CAIA). To
Chun-Liang Chen et al.
BMC cancer, 7, 111-111 (2007-06-30)
Stat3 has been classified as a proto-oncogene and constitutive Stat3 signaling appears to be involved in oncogenesis of human cancers. However, whether constitutive Stat3 signaling plays a role in the survival and growth of osteosarcomas, rhabdomyosarcomas, and soft-tissue sarcomas is
Chun-Liang Chen et al.
Molecular cancer, 7, 78-78 (2008-10-23)
Constitutive activation of signal transducer and activator of transcription 3 (Stat3) signaling pathway plays an important role in several human cancers. Activation of Stat3 is dependent on the phosphorylation at the tyrosine residue 705 by upstream kinases and subsequent nuclear
Hui Song et al.
Proceedings of the National Academy of Sciences of the United States of America, 102(13), 4700-4705 (2005-03-23)
This study focused on the screening of small-molecule inhibitors that target signal transducers and activators of transcription 3 (Stat3) in human breast carcinoma. The constitutive activation of Stat3 is frequently detected in human breast cancer cell lines as well as
Chaohao Huang et al.
Cancer science, 108(11), 2130-2141 (2017-08-11)
Dermokine (DMKN) was first identified in relation to skin lesion healing and skin carcinoma. Recently, its expression was associated with pancreatic cancer tumorigenesis, although its involvement remains poorly understood. Herein, we showed that DMKN loss of function in Patu-8988 and

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