 | Manual Patch Clamp Testing Services Cardiac safety hERG testing for drug candidates is a crucial element of drug development, as an estimated 25-40% of all lead compounds show some level of hERG cardiac toxicity. As a result, hERG (IKr) pre-clinical safety data is an essential part of any investigational new drug submission. Manual patch clamp technique is regarded as the gold standard for hERG safety testing which is stated in FDA ICH S7B for cardiac safety. To meet the demand for high quality hERG safety data, GenScript offers manual patch clamp testing services. In addition to hERG channel, some other cardiac ion channels (hKv1.5, hKv4.2, and hNav1.5) are also available for manual patch clamp. | | Cat. No. | Service | Price (USD) | SC1310 | Manual Patch Clamp Testing Services: IC50 Determination Service | | SC1309 | Manual Patch Clamp Testing Services: Rapid Patch Screening Service | | | Promotion (Valid through 06/30/2012)
Don’t Miss Your FREE Cardiac Ion Channel Test! |
Service Detail | | - IC50 Determination (SC1310)
- Rapid Patch Screening (SC1309)
- Sample Screening Results
| Ion Channel | hERG (hKv11.1), hKv1.5, hKv4.2, and hNav1.5 | | Cell Line | HEK-293 / CHO | | Technology | Manual patch clamp | | Sample Size | Minimum pre-weighed 3 mg or 500 μl of 10mM in 100% DMSO
Note: 3 - 5 mg is enough for low molecular weight (MW < 500). | | Compound Information | Please offer molecular weight, solubility, and stablity information.
If the compound(s) are not soluble in 100% DMSO, please offer any useful information concerning the solubility. | | Suggested Testing | 0.01 μM - 10 μM | | Test Concentrations | 5 conc. n = 2 ($550/sample), 3 conc. n =3 ($600/sample), or 4 conc. n = 3 ($750/sample) | | Positive Control | hERG (Terfenadine), hKv1.5 (Propafenone), hKv4.2 (Nicardipine), and hNav1.5 (Tetracaine) | | Test Conditions | Five to ten minutes of exposure at room temperature | | Deliverables | Report includes protocol summary, plus concentration-response curve and IC50 value if available. | | Turnaround Time | 1 - 2 weeks (1 - 9 samples) | | Note | For ≥10 samples, please feel free to contact us for your discount and turnaround time. | | | Ion Channel | hERG (hKv11.1), hKv1.5, hKv4.2, and hNav1.5 | | Cell Line | HEK-293 / CHO | | Technology | Manual patch clamp | | Sample Size | Minimum pre-weighed 1 mg or 200μl of 10mM in 100% DMSO
Note: 1 - 3 mg is enough for low molecular weight (MW < 500). | | Compound Information | Please offer molecular weight, solubility, and stablity information.
If the compound(s) are not soluble in 100% DMSO, please offer any useful information concerning the solubility. | | Minimum Number of Samples | 5 | | Suggested Testing | 1 μM or 10 μM | | Test Concentrations | 1 conc. n = 2 ($200/sample) | | Positive Control | hERG (Terfenadine), hKv1.5 (Propafenone), hKv4.2 (Nicardipine), and hNav1.5 (Tetracaine) | | Test Conditions | Five to ten minutes of exposure at room temperature | | Deliverables | Report includes the channel inhibition rate for each compound. | | Turnaround Time | 1 - 2 weeks (5 - 9 samples) | | Note | For ≥10 samples, please feel free to contact us for your discount and turnaround time. |
| | Figure. A shows the voltage-dependent relation of hERG current. Depolarization voltages from -60 to +60 mV for 4.8 s were applied in 10 mV increments, followed by a repolarization voltage of -50 mV for 5 s, with a holding voltage of -80 mV. B shows the current-voltage curve of hERG tail current. Terfenadine induced inhibition of hERG current evoked by 20 mV conditioning pulses with a return to -50 mV is illustrated in panel C. The IC50 of 35 nM (n=3, panel D) is comparable to the publish value of 52 nM (Alexander N. et al, J of Pharm. And Exper. Ther. 316(3):1098-1106, 2006). | |
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