Emodin

Modify Date: 2024-01-02 15:16:13

Emodin Structure
Emodin structure
 Common Name Emodin
CAS Number 518-82-1 Molecular Weight 270.237
Density 1.6±0.1 g/cm3 Boiling Point 586.9±39.0 °C at 760 mmHg
Molecular Formula C15H10O5 Melting Point 255 °C (dec.)(lit.)
MSDS Chinese USA Flash Point 322.8±23.6 °C
Symbol GHS07
GHS07		 Signal Word Warning

 Use of Emodin


Emodin is a broad-spectrum anticancer agent. Emodin inhibits casein kinase II (CKII) activity with IC50 of 2 μM.

 Names

Name emodin
Synonym More Synonyms

 Emodin Biological Activity

Description Emodin is a broad-spectrum anticancer agent. Emodin inhibits casein kinase II (CKII) activity with IC50 of 2 μM.
Related Catalog
Target

CKII:2 μM (IC50)
In Vitro Emodin, an anthraquinone derivative, selectively inhibits casein kinase II(CKII), a Ser/Thr kinase, as a competitive inhibitor. Emodin inhibits CKII activity with IC50 of 2 μM, which is two to three orders of magnitude lower than those against the other kinases. Enzyme kinetic assays show that Emodin inhibits CKII activity as acompetitive inhibitor against ATP with Ki of 7.2 μM[1]. Emodin is a broad-spectrum inhibitory agent of cancer cells, including leukemia, lung cancer, human tongue squamous cancer, colon cancer, gallbladder cancer, pancreatic cancer, breast cancer, human cervical cancer and hepatic carcinoma cells. Emodin inhibits A549, HepG2, OVCAR-3, HeLa and Madin-Darby Canine Kidney (MDCK) cells with IC50 of 19.54, 12.79, 25.82, 12.14 and 5.81 μg/mL. The anticancer mechanisms of Emodin are involved in many biological pathways, such as casein kinase II and ERK1/2[2]. Emodin is applied as a Reactive oxygen species (ROS) generator in combination with cisplatin in T24 and J82 human bladder cancer cells. Emodin kills T24 and J82 cells in the dose-dependent and time-dependent manner, and it is less toxic to HCV-29 cells. The concentration of 20 and 15 μM is selected as appropriate doses for investigating chemotherapeutic sensitivity of T24 and J82 cells at 24 h, respectively[3].
In Vivo Mice treated with Emodin (50 mg/kg) and Cisplatin (1 mg/kg) have significantly smaller tumors than those from the other groups. In addition, no notable differences on the body weight loss are observed among groups and no obvious necrosis and abnormity are observed in the sections of liver, kidney and heart. These results demonstrate that Emodin/cisplatin co-treatment can significantly suppress tumor growth in vivo with no distinct side effects. Consistent with in vitro experiment, TUNEL assay shows that Emodin/cisplatin combination significantly increased cell apoptosis in xenograft tumors. Emodin/Cisplatin co-treatment group also has lower MRP1 expression than the other groups[3].
Cell Assay The T24 human bladder cancer cells, the HCV-29 normal bladder epithelial cells and J82 human bladder cancer cells are are cultured in RPMI 1640 medium supplemented with 10 % fetal bovine serum at 37°C in a humidified atmosphere containing 5 % CO2. Cells are seeded in 96-well plates with 2×104 cells per well. The cells are incubated with Emodin for 24 h at different concentrations (0, 5, 10, 20, 30, 40, 50, 60, 70 μM) and chose the critical concentration (20 μM) treated with cells for 0, 6, 12, 24, 48, 72, 96 h. The cells are incubated with cisplatin for 24 h at different concentrations (0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 μg/mL). MTT assay is used to analyze the cell viability. Cells are treated with drugs for 24 h and apoptotic rates are assessed with flow cytometry using AnnexinV-fluorescein isothiocyanate (AnnexinV-FITC)/propidium iodide (PI) kit. Samples are prepared according to the manufacturer’s instruction and analyzed by a flow cytometry (FCM) Calibur[3].
Animal Admin Mice[3] 3×106 T24 cells are harvested, washed, and resuspended in serum-free optimum medium and then injected subcutaneously into 6-week old BALB/c-nu/nu mice (n=8 mice per group). Three days after inoculation, the mice are intraperitoneally administered with PBS, Emodin (50 mg/kg), Cisplatin (1 mg/kg), or Emodin/cisplatin every two days. On day 18, every mouse is sacrificed. After body weight measurement, tumors are isolated, weighted and fixed in 4 % paraformaldehyde (PFA). Hearts, livers and kidneys are stained with Hematoxylin & Eosin to determine the systemic toxicity. Terminal deoxynucleotidyl transferase(TdT)-mediated dUTP nick end label (TUNEL) assay is performed on paraformaldehyde-fixed and paraffin-embedded tumor sections.
References

[1]. Yim H, et al. Emodin, an anthraquinone derivative isolated from the rhizomes of Rheum palmatum, selectively inhibits the activity of casein kinase II as a competitive inhibitor. Planta Med. 1999 Feb;65(1):9-13.

[2]. Xing JY, et al. Antitumor Effects and Mechanism of Novel Emodin Rhamnoside Derivatives against Human Cancer CellsIn Vitro. PLoS One. 2015 Dec 18;10(12):e0144781.

[3]. Li X, et al. Emodin enhances cisplatin-induced cytotoxicity in human bladder cancer cells through ROS elevation and MRP1 downregulation. BMC Cancer. 2016 Aug 2;16:578.

 Chemical & Physical Properties

Density 1.6±0.1 g/cm3
Boiling Point 586.9±39.0 °C at 760 mmHg
Melting Point 255 °C (dec.)(lit.)
Molecular Formula C15H10O5
Molecular Weight 270.237
Flash Point 322.8±23.6 °C
Exact Mass 270.052826
PSA 94.83000
LogP 5.03
Vapour Pressure 0.0±1.7 mmHg at 25°C
Index of Refraction 1.745
Storage condition 2-8°C
Water Solubility DMSO: soluble | <0.1 g/100 mL at 19 ºC

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
CB7920600
CHEMICAL NAME :
Anthraquinone, 6-methyl-1,3,8-trihydroxy-
CAS REGISTRY NUMBER :
518-82-1
BEILSTEIN REFERENCE NO. :
1888141
LAST UPDATED :
199712
DATA ITEMS CITED :
14
MOLECULAR FORMULA :
C15-H10-O5
MOLECULAR WEIGHT :
270.25
WISWESSER LINE NOTATION :
L C666 BV IVJ DQ FQ L1 NQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
35 mg/kg
TOXIC EFFECTS :
Gastrointestinal - other changes

MUTATION DATA

TYPE OF TEST :
Mutation in mammalian somatic cells
TEST SYSTEM :
Rodent - hamster Lung
DOSE/DURATION :
10 mg/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 240,1,1990

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi:Irritant
Risk Phrases R36/37/38
Safety Phrases S26-S36-S37/39
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS CB7920600
HS Code 2932999099

 Synthetic Route

 Customs

HS Code 2914690090
Summary 2914690090 other quinones。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

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 Synonyms

6-Methyl-1,3,8-trihydroxyanthraquinone
MFCD00001207
Ecdyson
1,3,8-Trihydroxy-6-methylanthracene-9,10-dione
Alatinone
1,3,8-Trihydroxy-6-methylanthraquinone
EMODINE
1,3,8-Tri-hydroxy-6-methyl-anthra-quinone
Emodin
EMODIN 99
1,3,8-trihydroxy-6-methyl-9,10-anthraquinone
EINECS 208-258-8
EMODOL
Archin
schuttgelb
Emdin
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2506-11-8
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112683-58-6
Geranyloxyemodin
87605-71-8
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