1. Autophagy
    Membrane Transporter/Ion Channel
  2. Autophagy
    Potassium Channel

Daurisoline (Synonyms: (R,R)-Daurisoline)

Cat. No.: HY-N0221 Purity: 98.02%
Handling Instructions

Daurisoline is a hERG inhibitor and also an autophagy blocker.

For research use only. We do not sell to patients.

Daurisoline Chemical Structure

Daurisoline Chemical Structure

CAS No. : 70553-76-3

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 113 In-stock
Estimated Time of Arrival: December 31
5 mg USD 84 In-stock
Estimated Time of Arrival: December 31
10 mg USD 144 In-stock
Estimated Time of Arrival: December 31
25 mg USD 324 In-stock
Estimated Time of Arrival: December 31
50 mg USD 564 In-stock
Estimated Time of Arrival: December 31
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Customer Review

  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


Daurisoline is a hERG inhibitor and also an autophagy blocker.

IC50 & Target

hERG[1], autophagy[2]

In Vitro

Daurisoline (compound 1) shows a maximal inhibitory effect on the end of depolarization (IhERG-step) at +20 mV and on the peak tail current (IhERG-tail) at +60 mV. At concentrations of 1, 3, 10, and 30 μM, the inhibition ratios for current amplitude at the end of depolarization (IhERG-step) are 32.2±4.2%, 41.6±2.6%, 62.1±5.9%, and 74.8±6.8%, respectively; the IC50 is 9.1 μM. In turn, the inhibition ratios for IhERG-tail are 16.7±5.8%, 31.1±4.5%, 55.1±7.2%, and 81.2±7.0%, respectively; the IC50 is 9.6 μM[1]. Daurisoline (DAS) inhibits the CPT-induced autophagy in different cancer cell lines, with IC50s of 74.75±1.03, 50.54±1.02 and 80.81±1.10 μM in HeLa, A549 and HCT-116 cells, respectively. DAC and Daurisoline also impair lysosomal function and lysosomal acidification, via inhibiting the lysosome V-type ATPase acitivity in DAC and Daurisoline treated cells[2].

In Vivo

The results show that plasma concentration exists a biexponential decline following iv administration of Daurisoline (DS) or dauricine (Dau) 6 mg/kg. After iv Daurisoline and Dau 6 mg/kg in beagle dogs, HR, LVSP, dp/dtmax, and SBP are decreased. But the maximum pharmacological effects of both drugs peak at 10 to15 min later than the maximum plasma concentration is observed[3].

Kinase Assay

HEK293 cells are incubated overnight with 35 μg/mL Dx-OG514. Cells are washed and incubated with serum-free Dulbecco's modified Eagle's medium (DMEM) for 2 h. 15 minutes prior to lysis, FCCP is added into the medium to a final concentration of 1 μM. Cells are scraped in fraction buffer (50 mM KCl, 90 mM K-Gluconate, 1 mM EGTA, 50 mM Glucose, 20 mM HEPES, protease inhibitor cocktail, pH=7.4) supplemented with 1 μM FCCP. After spraying with needle, cells are spun down at 10,000 rpm for 15 sec. at 4°C. Then, re-centrifuge the supernatant at max speed for another 20 minutes. The pellet is resuspended in pre-warmed fractionation buffer supplemented with 1% BSA, and split into several aliquots with DAC, Daurisoline (DAS) or BAF treatment for 30 min. Baseline fluorescence is measured at 530 nm upon 511 nm excitation in 96-well plate at 30 s intervals for 5 min[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay

Cell proliferation is determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. HeLa cells are seeded at 7000 cells per well in 96-well plates in DMEM (1% serum). After cells are treated with different compounds (including Daurisoline) for indicated times, 20 μL of MTT (2.5 mg/mL in PBS) is added to each well. The plates are incubated for an additional 4 h at 37°C. Then the purple-blue MTT formazan precipitate is dissolved in 100 μL DMSO. The cell viability of HeLa cell is evaluated by measuring optical density at 572 nm with a microplate reader[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration

After the beagle dogs are anesthetized with sodium pentobarbital (30 mg/kg, iv) a canula is advanced into the left ventricle through the right common carotid artery. And the canula is connected to a pressure transducer which is connected to an amplifier and polygraph. The right femoral artery is canulated to measure the blood pressure wave. ECG (lead II) is observed simultaneously. After iv injection of Daurisoline (DS) (n=4) or Dau (n=4) to beagle dogs, the ECG, BP, and LVP signals are recorded. Blood samples are taken before dosing and at 2, 5, 10, 15, 20, 30, 45 min, and 1, 1.5, 2, 3, 4, 6, 8 h after dosing[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight







OC1=CC2=C(C=C1OC)CCN(C)[[email protected]@H]2CC3=CC=C(O)C(OC4=CC=C(C[[email protected]]5N(C)CCC6=C5C=C(OC)C(OC)=C6)C=C4)=C3

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month

Room temperature in continental US; may vary elsewhere

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