Invention Grant
- Patent Title: Faster resistive-pulse sensing together with physical and mechanical characterization of particles and cells
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Application No.: US14274404Application Date: 2014-05-09
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Publication No.: US09658206B2Publication Date: 2017-05-23
- Inventor: Zuzanna S. Siwy , Kenneth J. Shea , Ken Healy , Laura Michele Innes , Matthew Schiel , Matthew Pevarnik
- Applicant: The Regents of the University of California
- Applicant Address: US CA Oakland
- Assignee: The Regents of the University of California
- Current Assignee: The Regents of the University of California
- Current Assignee Address: US CA Oakland
- Agent Marcus C. Dawes; Daniel L. Dawes
- Main IPC: G01N27/447
- IPC: G01N27/447 ; G01N33/487 ; G01N15/12

Abstract:
A method for multiplex characterization of individual particles by their size, shape, mechanical properties (deformability), and chemical affinity to recognition agents. The analysis can be performed from concentrated solutions. The method detects transient sticking of particles in the pore and points to its location along a pore axis. If a pore is decorated with a recognition agent for an analyte present in a solution, it is possible to distinguish specific binding at the place of the recognition agent, and non-specific adsorption of the analyte. The method confirms whether any individual particle or hydrogel completely translocates the pore and allows unambiguous detection and characterization of multiple particles or hydrogels in the pore, which would previously corrupt the results, so that higher analyte concentrations can be used for faster analysis. High aspect ratio of the pores (ratio of pore length and diameter) together with the pattern of ion current pulses also allow passage of the same particle or cell multiple times without letting the cell exit the pore.
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