Rapid cell purification systems
First Claim
Patent Images
1. A method of purifying at least one of cells and viruses in a sample comprising:
- 1) adding a sample containing contaminants and at least one of cells and viruses to a well disposed in a porous medium;
2) applying an electrical potential across the medium to cause the contaminants to enter the medium through one or more walls of said well while retaining the at least one of the cells and viruses in said well;
3) reversing the electrical potential for a sufficient time to displace the at least one of the cells and viruses from the surface of the medium; and
4) removing the at least one of the cells and viruses from said well.
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Accused Products
Abstract
Methods and systems for purifying cells and/or viruses are provided. The sample is added to a well disposed in a medium. A potential is applied across the medium to cause the contaminants to enter one or more walls of the well, and retain the cells and/or viruses in the well. The cells and/or viruses can be removed from the well, and optionally adhered or fixed to a surface, or detected. In one embodiment, the cells and/or viruses may be retained in the well by embedding in the medium. The medium including the embedded cells and/or viruses may be excised or otherwise removed and transferred to a glass slide or other solid surface.
286 Citations
16 Claims
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1. A method of purifying at least one of cells and viruses in a sample comprising:
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1) adding a sample containing contaminants and at least one of cells and viruses to a well disposed in a porous medium; 2) applying an electrical potential across the medium to cause the contaminants to enter the medium through one or more walls of said well while retaining the at least one of the cells and viruses in said well; 3) reversing the electrical potential for a sufficient time to displace the at least one of the cells and viruses from the surface of the medium; and 4) removing the at least one of the cells and viruses from said well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16)
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11. A method of purifying at least one of cells and viruses in a sample comprising:
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1) adding a sample containing contaminants and at least one of cells and viruses to a well disposed in a porous medium; 2) applying an electrical potential across the medium to cause the contaminants to enter said medium through a surface of one or more walls of said well while retaining the at least one of the cells and viruses in said well; 3) providing a localization device to said medium, wherein the localization device draws the at least one of the cells and viruses in said well to a discrete location in the well thereby localizing the at least one of the cells and viruses; and 4) removing the at least one of the cells and viruses from said well; wherein the localization device is selected from at least one of a non-conductive material, a conductive material, and a discontinuous buffer system.
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13. A method of purifying at least one of cells and viruses in a sample comprising:
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adding a sample containing contaminants and at least one of cells and viruses to a well disposed in a medium; applying an electrical potential across the medium to cause the contaminants to enter said medium through a surface of one or more walls of said well while retaining the at least one of the cells and viruses in said well, wherein the electrical potential comprises a field polarity and the field polarity is switched according to a programmed sequence; and removing the at least one of the cells and viruses from said well.
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Specification