Smart-Patch Technique

  • Ravshan Z. Sabirov
  • Yuri E. Korchev
  • Yasunobu Okada
Part of the Springer Protocols Handbooks book series (SPH)


When a patch pipette approaches a cellular surface at distances comparable to the size of the tip opening, the monitored pipette current drops before the pipette touches the membrane. Fine nano-tipped glass electrodes can effectively function as “spherical sensors” that can “roll” over surface irregularities in the specimen without damaging it. By keeping the pipette current constant (so the distance between the pipette tip and the sample surface remains constant) and scanning the sample, it is possible to obtain an image of its surface without physical contact between the pipette and the surface. Thus, one can first image the cellular surface using fine-tipped patch pipettes with scanning ion conductance microscopy (SICM) methodology and then position the same pipette precisely at locations of interest (e.g., scallop crests, T-tubules in cardiac myocytes, neuronal dendrites); finally, a giga-ohm seal can be formed according to the conventional patch-clamp procedure. This smart combination of patch-clamp and SICM methods is called the smart-patch technique. It allows precise mapping of ion channels over the cellular surface.


Cystic Fibrosis Transmembrane Conductance Regulator Scanning Probe Microscopy Patch Pipette Access Resistance Cellular Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer 2012

Authors and Affiliations

  • Ravshan Z. Sabirov
    • 1
    • 2
  • Yuri E. Korchev
    • 4
  • Yasunobu Okada
    • 3
  1. 1.Laboratory of Molecular PhysiologyInstitute of Physiology and Biophysics, Uzbekistan Academy of SciencesTashkentUzbekistan
  2. 2.Department of BiophysicsNational UniversityTashkentUzbekistan
  3. 3.National Institute for Physiological Sciences, National Institutes of Natural SciencesOkazakiJapan
  4. 4.Division of MedicineImperial College London, Medical Research Council Clinical Science Centre, Faculty of MedicineLondonUK

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