Dynasore

Catalog No.S8047

Dynasore is a cell-permeable, reversible non-competitive dynamin inhibitor of GTPase activity of dynamin 1/2, with IC50 of 15 μM in a cell-free assay, also inhibits the mitochondrial dynamin Drp1, with no effect against other small GTPase.

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Dynasore Chemical Structure

Dynasore Chemical Structure
Molecular Weight: 322.31

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Product Information

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Product Description

Biological Activity

Description Dynasore is a cell-permeable, reversible non-competitive dynamin inhibitor of GTPase activity of dynamin 1/2, with IC50 of 15 μM in a cell-free assay, also inhibits the mitochondrial dynamin Drp1, with no effect against other small GTPase.
Targets Dynamin1/2 [1]
(Cell-free assay)
IC50 ~15 μM
In vitro Dynasore acts as a potent inhibitor of endocytic pathways known to depend on dynamin by rapidly blocking coated vesicle formation within seconds of dynasore addition. Two types of coated pit intermediates accumulate during dynasore treatment, U-shaped, half formed pits and O-shaped, fully formed pits, captured while pinching off. Dynasore at concentration of 80 μM, also inhibits the enzymatic activity of the mitochondrial dynamin Drp1. Dynasore strongly blocks the uptake, trafficking, and intracellular accumulation of transferrin in HeLa cells with IC50 of ~15 μM. Dynasore also prevents the endocytosis of low-density lipoprotein and cholera toxin. Dynasore (80 μM) strongly interferes with the spread of freshly plated cells, and inhibits BSC1 cells migration by about 50%. [1] Dynasore completely and reversibly blocks endocytosis in cultured hippocampal neurons after sustained or brief action potentials stimuli with full inhibition at 80 μM and a half-maximal inhibition at ~30 μM. In the presence of Dynasore, low-frequency stimulation leads to sustained accumulation of synaptopHluorin and other vesicular proteins on the surface membrane at a rate predicted from net exocytosis, as well as a reduction in the density of synaptic vesicles and the presence of endocytic structures only at synapses. [2] Dynasore can block human epithelial cell HEK 293 infection of human papillomavirus type 16 and bovine papillomavirus type 1 pseudovirions with equal IC50 of ~80 μM, which is partly reversible. [3]
In vivo
Features

Protocol(Only for Reference)

Kinase Assay: [1]

GTPase activity assay GTPase activity is measured by using a radioactive charcoal-based assay. Proteins dynamin, human Drp1 at the indicated concentrations are incubated in 10 mM Tris (pH 7.2), 2 mM MgCl2, and 20 μM GTPγP32 (2000 dpm/pmol) alone or, when appropriate, with lipid nanotubes for the indicated times and temperatures; the final NaCl concentration is 150 mM NaCl for the high-salt condition and between 10 and 20 mM for the low-salt conditions depending on the protein concentration in the stock solution. GTP hydrolysis is ended by transferring 10 μL aliquots of the reaction into a 500 μL slurry containing acid-washed charcoal, followed by a 10 min centrifugation (20000 × g, 4 ℃) and final counting of the liberated P32O4 contained in 250 μL supernatant.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)0.020.151.80.40.0810
Body Surface Area (m2)0.0070.0250.150.050.020.5
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)
1

References

[1] Macia E, et al. Dev Cell, 2006, 10(6), 839-850.

[2] Newton AJ, et al. Proc Natl Acad Sci USA, 2006, 103(47), 17955-17960.

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Chemical Information

Download Dynasore SDF
Molecular Weight (MW) 322.31
Formula

C18H14N2O4

CAS No. 304448-55-3
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 64 mg/mL (198.56 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* 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 Name 2-Naphthalenecarboxylic acid, 3-hydroxy-, 2-[(3,4-dihydroxyphenyl)methylene]hydrazide

Tech Support

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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