For research use only.

Catalog No.S2285

33 publications

Cryptotanshinone Chemical Structure

CAS No. 35825-57-1

Cryptotanshinone is a STAT3 inhibitor with IC50 of 4.6 μM in a cell-free assay, strongly inhibits phosphorylation of STAT3 Tyr705, with a small effect on STAT3 Ser727, but none against STAT1 nor STAT5. Cryptotanshinone induces ROS-dependent autophagy and mitochondria-mediated apoptosis.

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Selleck's Cryptotanshinone has been cited by 33 publications

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Biological Activity

Description Cryptotanshinone is a STAT3 inhibitor with IC50 of 4.6 μM in a cell-free assay, strongly inhibits phosphorylation of STAT3 Tyr705, with a small effect on STAT3 Ser727, but none against STAT1 nor STAT5. Cryptotanshinone induces ROS-dependent autophagy and mitochondria-mediated apoptosis.
STAT3 [1]
(HCT-116 cells)
4.6 μM
In vitro

Cryptotanshinone, a natural compound isolated from the roots of Salvia miltiorrhiza Bunge (Danshen), significantly inhibits STAT3-dependent luciferase activity, the STAT3 Tyr705 phosphorylation and the dimerization of STAT3, compared to tanshinone IIA which exhibits no activity. Cryptotanshinone (7 μM) dramatically blocks STAT3 Tyr705 phosphorylation but not STAT3 Ser727 phosphorylation in DU145 cells, and significantly inhibits JAK2 phosphorylation with IC50 of ~5 μM without affecting the phosphorylation of upstream kinases c-Src and EGFR, suggesting the inhibition of STAT3 Tyr705 phosphorylation might due to a direct mechanism probably by binding to the SH2 domain of STAT3. Cryptotanshinone significantly inhibits the proliferation of DU145 prostate cancer cells harboring constitutively active STAT3 with GI50 of 7 μM by blocking STAT3 activity, which leads to the down-regulation of cyclin D1, Bcl-xL, and survivin, subsequently the accumulation in the G0-G1 phase. Cryptotanshinone exhibits less growth inhibitory effect on PC3, LNCaP and MDA-MB-468 cells. [1]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
human Hep3B cells NUPjd|NtTnWwY4Tpc44h[XO|YYm= MXGxOkBp NW\qXYFpUW6qaXLpeIlwdiCxZjDITWYyKGGldHn2ZZRqd25iaX6gbJVu[W5iSHXwN2Ih[2WubIOgZZN{\XO|ZXSgZZMhcW6qaXLpeIlwdiCxZjDofZBwgGmjLXnu[JVk\WRibIXjbYZmemG|ZTDlfJBz\XO|aX;uJIFnfGW{IEG2JIhzeyCkeTDy[ZBwenSncjDhd5NigSxiSVO1NF0yNjN4IN88US=> MYOxO|U5Ozl3MB?=
human AGS cells NFLqcHRHfW6ldHnvckBie3OjeR?= M{HHe|E3KGh? M{fVWGlvcGmkaYTpc44hd2ZiSFnGNUBi[3SrdnH0bY9vKGmwIHj1cYFvKEGJUzDj[YxteyCjc4Pld5Nm\CCjczDpcohq[mm2aX;uJI9nKGi7cH;4bYEucW6mdXPl[EBtfWOrZnXyZZNmKGW6cILld5Nqd25iYX\0[ZIhOTZiaILzJIJ6KHKncH;yeIVzKGG|c3H5MEBKSzVyPUGuOVgh|ryP MnGxNVc2QDN7NUC=
human HCT116 cells M{PySWZ2dmO2aX;uJIF{e2G7 MX:yOEBp MmTYTY5pcWKrdHnvckBw\iCVVFHUN{BmgHC{ZYPz[YQhcW5iaIXtZY4hUEOWMUG2JINmdGy|IHHmeIVzKDJ2IHjyd{BjgSCudXPp[oVz[XOnIILldI9zfGW{IHflcoUh[XO|YYmsJIlkPTB;ND62JO69VQ>? MX6yNlY2ODN{NR?=
human MIAPaCa2 cells M17ZUGN6fG:2b4jpZ:Kh[XO|YYm= MkHXNlQhcA>? NHjBWoREgXSxdH;4bYNqfHliYXfhbY5{fCCqdX3hckBOUUGSYVPhNkBk\WyuczDh[pRmeiB{NDDodpMh[nliTWTUJIF{e2G7LDDJR|UxRTVwODFOwG0> NET2c4czOTd5NUG1Oi=>
human KB-3-1 cells M3\Hb2N6fG:2b4jpZ:Kh[XO|YYm= M1jheVQ5KGh? MUDDfZRwfG:6aXPpeJkh[WejaX7zeEBlenWpLYPlcpNqfGm4ZTDoeY1idiCNQj2zMVEh[2WubIOgZYZ1\XJiNEigbJJ{KGK7IF3UV{9RVVNiYYPzZZktKEmFNUC9Ok46KM7:TR?= MV6xNVczODV{MB?=
human KBV1 cells NFnCXY9EgXSxdH;4bYPDqGG|c3H5 M1nab|Q5KGh? M{i2bGN6fG:2b4jpZ4l1gSCjZ3HpcpN1KG23bITp[JJ2\y2{ZYPpd5RidnRiaIXtZY4hU0KYMTDj[YxteyCjZoTldkA1QCCqcoOgZpkhVVSVL2DNV{Bie3OjeTygTWM2OD15LkWg{txO NXf4XYxkOTF5MkC1NlA>
human AGS cells NInvZVVIem:5dHigbY5pcWKrdHnvckBie3OjeR?= NYrtTok3OjRiaB?= NX\pVnhyXmmjYnnsbZR6KG:oIHj1cYFvKEGJUzDj[YxteyC3bnTldkBpgXCxeHnjJINwdmSrdHnvcpMh[W[2ZYKgNlQhcHK|IHL5JG1VXCCjc4PhfUwhUUN3ME2xNE4zKM7:TR?= M3KxdVE4PTh|OUWw
human THLE3 cells NYL2d4FxS3m2b4TvfIlkyqCjc4PhfS=> M1OzR2N6fG:2b4jpZ4l1gSCjZ3HpcpN1KGi3bXHuJHRJVEV|IHPlcIx{KGK7IF3UWEBie3OjeTygSWM2OD1{Mj65JO69VQ>? MnLTNlA1PTV3N{i=
human PBMC NYT5W3dwTnWwY4Tpc44h[XO|YYm= MWLJcohq[mm2aX;uJI9nKHCqeYTvbIVu[WepbIX0bY5qdmmwIFGtd5RqdXWuYYTl[EBpfW2jbjDQRm1EKHC{b3zp[oVz[XSrb36gZZN{\XO|ZXSgZZMh\GWlcnXhd4UhcW5iW{G0R311cHmvaXTpcoUhcW6lb4Lwc5JifGmxbjygTWM2OD1|Nz60JO69VQ>? NVnqUm1NOTF5MkC1NlA>
PTPN11 E76K/+ MEF NFntZ2ZIem:5dHigbY5pcWKrdHnvckBie3OjeR?= MUiyNEDPxE1? MWHHdo94fGhiaX7obYJqfGmxbjDv[kBRXFCQMUGgSVc3Uy9tIF3FSkBifCB{MDD1US=> M1;ZTlI{QTV5NEK2
human HeLa cells MmHuS5Jwf3SqIHnubIljcXSrb36gZZN{[Xl? NUL6dWVJOjRiaB?= MW\Hdo94fGhiaX7obYJqfGmxbjDv[kBpfW2jbjDI[WxiKGOnbHzzJIFnfGW{IEK0JIhzew>? NVfyNnl1OjN7NUe0NlY>
human HepG2 cells MkTQR5l1d3SxeHnjxsBie3OjeR?= NUXFSHNtS3m2b4TvfIlkcXS7IHHnZYlve3RiaIXtZY4hUGWyR{KgZ4VtdHNiYomgUXRVKGG|c3H5 Mlv4NVYxOzh3NUC=
human OVCAR-3 cells NVrpZ2ZKS3m2b4TvfIlkyqCjc4PhfS=> NFLv[lhEgXSxdH;4bYNqfHliYXfhbY5{fCCqdX3hckBQXkODUj2zJINmdGy|IHL5JG1VXCCjc4PhfS=> M4fab|E3ODN6NUWw
mouse Ba/F3 cells MkDGSpVv[3Srb36gZZN{[Xl? M{\5PFMxKM7:TR?= NF7PWnE{KGh? NHTqZXFKdmirYnn0bY9vKG:oIFnMN{1qdmS3Y3XkJHNJWDJvR3HiNkBqdnSncnHjeIlwdiCrbjDtc5V{\SCEYT;GN{Bk\WyuczDwdoV1emWjdHXkJIF1KDNyIIXNJIZweiB|IHjyd{BxemmxcjDJUFMhe3SrbYXsZZRqd25iYomgbY1ufW6xYnzveJRqdmdibXX0bI9l Moj2NlM6PTd2Mk[=

... Click to View More Cell Line Experimental Data

Methods Test Index PMID
Western blot
p-STAT3 / STAT3 / p-ERK / ERK ; 

PubMed: 30986607     

Immunoblotting of pSTAT3 (Y705) and pERK1/2 in U251/C7 cells treated with cryptotanshinone (10 μM) for 0, 0.5, 2 or 4 h.

p-STAT3 / p-ERK ; 

PubMed: 30986607     

Left, representative immunofluorescence of pSTAT3 (Y705) and pERK1/2 in U251/C7 cells treated with DMSO or cryptotanshinone (10 μM) for 4 h. Right, fluorescence intensity of pSTAT3 (Y705) (red box) and pERK1/2 (green box) in cells treated with or without Cryptotanshinone were quantified by ImageJ. Scale bar, 50 μm.

Growth inhibition assay
Cell viability; 

PubMed: 20820782     

The effect of Cryptotanshinone in different concentrations on B16 and B16BL6 melanoma cell growth.

In vivo Cryptotanshinone administration significantly reduces the body weight and food intake of ob/ob mice (C57BL/6J-Lepob) and diet-induced obese (DIO) mice in a dose-dependent manner. Cryptotanshinone causes noticeably less fat in the adipose tissues, significant reductions of serum triglycerides and cholesterol levels, and 2.5- to 3-fold higher AMPK activity of the skeletal muscles than in the control mice. Oral administration of Cryptotanshinone at 600 mg/kg/day produces dramatic reductions in blood glucose levels of ob/ob mice (C57BL/6J-Lepob), db/db mice (C57BL/KsJ-Leprdb), and ZDF rats, which occur after 3 days and persist over the entirety of the monitoring period. [2]


Kinase Assay:[1]
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STAT3-dependent dual-luciferase assay:

HCT-116 cells are transiently transfected with reporter plasmid having the STAT3-binding element for regulating luciferase assay. Cells are treated with Cryptotanshinone for 24 hours at a concentration range of 0.2 to 50 μM. After treatment, cells are harvested in 20 μL of passive lysis buffer and luciferase activity is evaluated by the Dual Luciferase Reporter Assay kit on Wallac Victor2. The concentration of Cryptotanshinone that inhibits the luciferase activity by 50% represents IC50 value.
Cell Research:[1]
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  • Cell lines: KATO III, DU145, PC3, LNCaP, MDA-MB-231, MDA-MB-468, MDA-MB-453, MCF-7, MCF-10A, HeLa and HCT-116
  • Concentrations: Dissolved in DMSO, final concentrations ~50 μM
  • Incubation Time: 24 or 48 hours
  • Method: Cells are exposed to Cryptotanshinone for 24 or 48 hours. For the determination of cell proliferation, the cell proliferation reagent WST-1 is added and WST-1 formazan is quantitatively measured at 450 nm using an ELISA reader.
    (Only for Reference)
Animal Research:[2]
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  • Animal Models: Zucker Diabetic Fatty (ZDF) (male) type 2 diabetic rat, ob/ob mice (C57BL/6J-Lepob), db/db mice (C57BL/KsJ-Leprdb) and male C57BL/6J mice with high-fat diet-induced obesity
  • Dosages: ~600 mg/kg/day
  • Administration: Orally
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 5 mg/mL warmed (16.87 mM)
Ethanol 1 mg/mL warmed (3.37 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
5% DMSO+40%PEG 300+5% Tween80 +ddH2O
For best results, use promptly after mixing.

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 296.36


CAS No. 35825-57-1
Storage powder
in solvent
Synonyms N/A
Smiles CC1COC2=C1C(=O)C(=O)C3=C2C=CC4=C3CCCC4(C)C

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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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Frequently Asked Questions

  • Question 1:

    I want to use this compound for my mouse in vivo experiment, so how to reconstitute it?

  • Answer:

    Cryptotanshinone can be dissolved in 2% DMSO/30% PEG 300/5% Tween 80/ddH2O at 2 mg/ml. But after stayed for about 0.5-1 hour, the precipitation went out. So if you are going to use this vehicle, it is recommended to be prepared just before use.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID