Nanion Technologies
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Data and Applications


Acetylcolin Receptor

a3b4

Shown is a raw current response of a HEK293 cell expressing AChR (α3β4) to exposure to 300 μM nicotine. Solutions were  stacked (layered) in the pipette to achieve brief exposure times.

ACh Dose Response Curve (nAChR a7)

AChRCRC

Increasing acetylcholine concentrations (30 µM, 100 µM and 300 µM) were added to the same cell using a stacked applications protocol.
Cells were kindly provided by Galantos Pharma GmbH.

Activation of TRPV1 by Internal Application of Capsaicine

0TRPV1_Internal_Act

The SyncroPatch 96 allows continues recording during the application of compounds from the intracellular side. Here, TRPV1 channels were activated by the internal application of capsaicine.

Automated Analysis

KV13_AnalysisTool_Scrrenshot

With the SyncroPatch Analyzer, IC50 plots are easily generated, displayed, averaged, evaluated, and modified.

Cells were kindly provided by Evotec AG, Hamburg, Germany.

Blind Study on hNav1.5 Antagonists Using an Inactivation Protocol

NavInact

22 selected compounds were tested in a blind study on the SyncroPatch 96 using HEK 293 cells expressing hNav1.5 ion channels. The IC50-values were compared to manual patch clamp measurements, performed at the customer site.

Cav1.2 Current Voltage Relationship

Cav12_IV

Shown are raw current traces (top) and the constructed peak current-voltage relationship (bottom) of CaV1.2 (HEK293) recorded on the SyncroPatch® 96.

Cav3.2 - Online Analysis

SyncroCav32IV_OA

Shown are individual current voltage relationships of CaV3.2 (HEK293) obtained in a single run on the SyncroPatch®96. 75 % of the cells had a seal above 0.5 GΩ (color coded in green). The corresponding raw current traces of this experiment are shown in the data set CaV3.2 - Raw Currents.

Cells were kindly provided by Cytomyx Millipore, UK.

Cav3.2 - Raw Currents

SyncroCav32Currents

Shown are raw current responses of CaV3.2 (HEK293) to a current voltage relationship step protocol. 75 % of the cells had a seal above 0.5 GΩ (color coded in green). The corresponding online analysis of this experiment is shown in the data set CaV3.2 - Online Analysis.

Cells were kindly provided by Cytomyx Millipore, UK.

Erythrocytes

Erys

Shown is a current recording from an erythrocytes as a response to a voltage ramp from -100 mV to +100 mV aquired on the SyncroPatch® 96. The increase in current was induced by a reduction in osmoliarity.

Cells were kindly provided by Dr. Andrea Brüggemann.

GABA CRC Analysis

GABA on-line analysis results

Online analysis results of the dose response curves were obtained with a few mouse clicks. The color code of the online analysis helps to visualize different concentrations applied.
The corresponding data traces is shown in the data set "GABA Dose Response Curves".

GABA Dose Response Curves

SyncroPatch GABA CRC

Increasing concentrations of GABA were applied to each cell. Cells were from frozen stocks and were prepared for a FliPR experiment running alongside.
The corresponding online analysis of this experiment is shown in the data set "GABA CRC Analysis".

GABA Modulator: Diazepam

Diazepam

Shown is a raw current response of a HEK293 cell expressing GABAA receptors to initial exposure to GABA, followed by joint exposure to GABA and diazepam (as indicated). Solutions were  stacked (layered) in the pipette to achieve brief exposure times.

GABA Receptor

Gaba-and-close-up_bea

With the SyncroPatch® 96 currents can be recorded continuously during compound application. This, in conjunction with a solution exchange time of about 100 ms, makes the SyncroPatch®96 an excellent tool for investigations of ligand gated ion channels. In the data example, 10 μM GABA was added to a HEK293 cell expressing GABAA (α1β2γ2) receptors. The boxed trace shows a close up of the GABA-response.

hERG Current Voltage Relationship

HergIV_No_and_with_Leak

Borosilicate glass chips are used as the patch clamp substrate, ensuring excellent voltage control of the cell membrane and high quality seals. Voltage gated channels such as hERG (expressed in HEK293) have been used to validate the system. These traces show the raw current responses of a single cell to a hERG IV pulse protocol. The data were recorded on the SyncroPatch® 96. In the upper screenshot raw current traces are shown. In the lower one the same current traces after leak subtraction are shown.

Cells were kindly provided by Cytomyx Millipore, UK.

hNav1.5 - 96-Well Plate Recording Format

Nav15_Screenshot

Shown is a screenshot made during a recording of hNaV1.5 currents stably expressed in HEK293 cells. On the top left the raw currents from each individual cell are displayed. The background color coding marks the cells with seals above 100 MΩ in blue and above 0.5 GΩ in green. On the right a selection of 16 recording channels can be displayed on a larger scale. The recording in a single well can be selected for detailed visual assessment.

Cells were kindly provided by Cytomyx Millipore, UK.

hNav1.5 - Screening Mode

SyncroPatch_NaTrace_small

Compound effect on hNav1.5  was investigated. A two-pulse protocol (-90 mV / -130 mV) was used to establish if the different compounds blocked the Nav1.5 currents in a state-dependent manner.
The image shows raw data traces. Success rate for the experiment was 71% (>1 GOhm seal resistance), indicated by the green color.
The corresponding online analysis of this experiment is shown in the data set NaV1.5 - Screening Online Analysis.

Cells were kindly provided by Millipore.

hNav1.5 - Screening Online Analysis

Nav1.5 screening

The image shows the state dependent block at -130 mV (light blue) and -90 mV (dark blue) by the addition of increasing compound concentrations to the different recording wells. The large window shows the effect of increasing concentrations of Lidocaine (red box) on the Nav1.5 currents.
Cells were kindly provided by Millipore.

hNav1.5 Current Voltage Relationship

NaStrom_IV

Borosilicate glass chips are used as the patch clamp substrate, ensuring excellent voltage clamp of the cell membrane and high quality seals. Voltage gated channels such as hNaV1.5 (HEK293) have been used to validate the system. This data example shows the I/V characteristics and the corresponding raw current traces of a single cell from a recording on the SyncroPatch® 96.

Cells were kindly provided by Millipore.

hNav1.5 Inactivation Protocol

NaInactivation

Shown are raw current responses of HEK293 cells expressing hNaV1.5 to a double (inactivation) pulse protocol.

Cells were kindly provided by Cytomyx Millipore, UK.

hNav1.5 Lidocaine Dose Response

NaLidocaine

Timecourse of the NaV1.5 peak currents in response to exposure to different lidocaine concentrations (0 μM, 1 μM, 10 μM, 100 μM, 0 μM). Time points at which the external solution was exchanged is marked by the red lines.

Cells were kindly provided by Cytomyx Millipore, UK.

Internal Perfusion - Kv1.3

p41_1_IntPerf

The SyncroPatch® 96 supports internal perfusion allowing internal administration of compounds, second messengers and metabolites. Here, KV1.3 currents, endogenously expressed in Jurkat cells, were blocked by the internal administration of Cs+ followed by washout with Cs+-free internal solution.

Kv1.3 - 96-Well Plate Recording Format

SyncroPatch 96 Kv1.3

Shown is a screenshot made during a recording of KV1.3 currents stably expressed in CHO cells. On the top left the raw currents from each individual cell are displayed. The background color coding marks the cells with seals above 500 MΩ in blue and above 1 GΩ in green.

Cells were kindly provided by Evotec AG, Hamburg, Germany.

Nav1.5 inhibition by Lidocaine

0NavLidocaineScreen

Inhibition of Nav1.5 currents in stem cell-derived cardiomyocytes (iCells) by lidocaine.  Lidocaine concentrations: 6 µM, 62 µM and 620 µM. The obatined  IC50 -value was 14 µM.

Cells were kindly supplied by CDI.

Nicotinic Acetylcholine Receptors a7

SyncronAChR

Human nicotinic ACh receptors were activated by 100 µM ACh. Solution switch time was fast enough to see nAChR a7 responses.


P2X2/3

P2X23_10uATP

Shown are three consecutive current responses of 1321 N1 cells expressing P2X2/3 receptors to 10 µM ATP. Cells were washed twice between compound applications (holding −80 mV). The data demonstrate the reproducability of the whole cell current responses.

Cells were kindly supplied by Evotec AG, Hamburg, Germany

PNU modulation of nAChR a7

PNU_Syncro

After the desensitization of the nAChR a7 receptor by 100 µM acetylcholine, 10 µM PNU-120596 was applied together with 100 µM of Ach, reactivating the ion channels.

Cells were kindly provided by Galantos Pharma GmbH.

Seal Statistics

Seal Stats

These statistics summarize experiments conducted with HEK293, CHO, Ltk, RBL, and Jurkat cells. More than 50 % of the cells have a seal resistance above 1 GΩ. In total more than 80 % of the cells had a whole cell resistance above 0.5 GΩ.


Stabe GABA Responses on Repeated Compound Addition

Repeated GABA responses

The traces show repeated application of 100 µM GABA to GABAA receptors (α1 β2 γ2) expressed in HEK 293 cells. Current amplitudes were stable over time, illustrating the reliable and fast solution excahnge supported by the SyncroPatch 96.

TRPV1

TRPV1_bea_verzerrt

Using the SyncroPatch® 96 CHO cells expressing TRPV1 were subjected to a voltage ramp (-100 mV to +100 mV) in the presence and absence (control) of 2 μM capsaicin. As shown in the exemplar traces, inward and outward currents increase upon capsaicin addition.