Developing iPSC ion channel recordings with automated patch clamp

Induced pluripotent stem cell (iPSC) techniques have been developing over the last few years, improving cell differentiation and maturation. In combination with improved culturing and handling, iPSC ion channel recordings via automated patch clamp (APC) have made these model ‘adult’ differentiated cells extremely useful in biomedical research, more translatable in defining human physiology and disease, whilst reducing the need and use of animal tissue.

Over 2022, Sophion scientists, collaborators, and users of our platforms have been at the forefront of this iPSC and APC revolution. Our collaborative research is captured here:

Webinars

Mike Hendrickson (BrainXell) & Daniel Sauter on iPSC-motor neurons:

Liz Buttermore (Human Neuron Core, Boston Children’s Hospital) & Kadla Rosholm on iPSC-cortical neurons:

Will Seibertz (University Medical Center Göttingen) & Kadla Rosholm on iPSC-cardiomyocytes:

Review paper

Adventures and Advances in Time Travel With Induced Pluripotent Stem Cells and Automated Patch Clamp. Rosholm et al., Frontiers Mol. Neurosci., 2022: view

Are you interested in learning more about the research performed on Sophion automated patch clamp platforms and stem cells? We have gathered a list of relevant publications here

New video tutorials to help you get the best start with QPatch Compact

For our new users of QPatch Compact, we have produced five new video tutorials to help you get started with planar patch clamp experiments on QPatch Compact. Besides the new video tutorials, on the new QPatch Compact Support Site, you have access to safety instructions, user manual incl. test protocols, and troubleshooting guides.

QPatch II secured the best infrastructure for Linköping University’s new academic core facility

Our high-throughput QPatch II automated patch clamp instrument enabled Linköping University to accelerate its research into a new epilepsy drug – and get the green light to build a national core facility for ion channel research.

Linköping University’s Division of Neurobiology immediately saw the full potential of its new QPatch II patch clamp instrument. The team had been accustomed to testing one compound on one ion channel per day using conventional manual equipment in their electrophysiology laboratory. The arrival of the automated QPatch II from Sophion Bioscience changed that at a stroke.

For Linköping University, the focus now is on using the QPatch II to make further progress towards a drug for epilepsy. At the same time, the team has high hopes for their new core facility to attract clinicians, electrophysicists, and pharmacologists from all over Sweden, who want to expand their range of automated patch clamp experiments.

Click to download the full story here

Sophion technology helped Metrion Biosciences meet higher customer demands and growing assay complexity

Metrion Biosciences successfully met the challenge of growing complexity in ion channel research by adopting Sophion Bioscience’s automated QPatch II and Qube 384 patch clamp platforms. The move transformed Metrion’s research output, enabling it to take on more – and larger – projects and grow its customer base.

Together, Metrion and Sophion have forged a close relationship over the years. Sophion’s input on assay optimization, application, and technical instrument support and instrument service has helped Metrion maximize the in-laboratory benefits of automated patch clamping.

Click to download the full story here

Large Molecules: New application report focus on Wnt signaling pathway activation

In a new application report, written together with Dr. Aamir Ahmed from Kings College London, UK, we obtained automated patch clamp (APC) recordings using the fragile and scarce Wnt proteins. Wnt 9B, 5A and 10B, were all shown to activate ion channel currents in PC3 cells.

Wingless-related integration site (Wnt) comprises a diverse family of secreted signaling proteins (350–400 amino acids, 35-45 kDa), which act as close-range signaling molecules. Wnt signal activation initiates a complex downstream signal cascade in eukaryotic cells and is critical in the development of many diseases, including cancer.

It was possible to obtain both manual and automated patch clamp recordings of fragile and scarce Wnt proteins after a thorough optimization of the protein handling.

We highlight aspects of the handling of Wnt proteins optimized for APC testing, which could also be applied to other large molecules (e.g. peptide toxins, nanobodies, antibodies).

You can find all relevant Wnt signaling (and other large molecules) publications and posters here

New faces at Sophion

To meet the increasing demand of new application development and customer support, we have hired two new application specialists.

Kim Boddum has a PhD in neuropharmacology and comes from a post doc at the Department of Biomedical Sciences at the Uni of CPH. Kim has for the past 7-8 years worked on membrane receptors and ion channels function and pharmacology.

Kadla Røskva Rosholm has a PhD in Nanoscience working on high-throughput fluorescence-based cell assays. Also she been done two post docs working on electrophysiological and fluorescence methodologies to investigate the molecular mechanism of ion-channel signaling.

You can meet Dr. Kadla Røskva Rosholm and Dr. Kim Boddum at customer sites, demos or conferences.