Electrophoresis method and apparatus having continuous detection means
First Claim
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1. An apparatus for analytical electrophoresis comprising:
- a layer of electrophoresis medium having a plurality of channels, each of which is adapted to electrophoretically separate samples into components along said channels in the plane of said layer;
means to introduce a plurality of samples having multiple components into one end of said medium in said plurality of channels;
means to apply an electric potential to said medium along said channels;
detection means disposed in a fixed position substantially across the width of said medium, intersecting said channels, said detection means being substantially separated from said sample introduction means, said detection means adapted to detect continuously in time during the electrophoretic migration said components of said samples in said channels and to identify the channel in which the detected components are located as said components pass through said medium adjacent to said detection means.
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Abstract
A multi-channel electrophoresis apparatus is fitted with a detection means disposed substantially across the width of the medium, intersecting all channels. The detection means senses components of samples as they migrate past the detection means and identifies the channel in which the detected components are located. In the preferred embodiment, the samples are tagged with radioisotopes which are detected by the detector.
58 Citations
25 Claims
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1. An apparatus for analytical electrophoresis comprising:
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a layer of electrophoresis medium having a plurality of channels, each of which is adapted to electrophoretically separate samples into components along said channels in the plane of said layer; means to introduce a plurality of samples having multiple components into one end of said medium in said plurality of channels; means to apply an electric potential to said medium along said channels; detection means disposed in a fixed position substantially across the width of said medium, intersecting said channels, said detection means being substantially separated from said sample introduction means, said detection means adapted to detect continuously in time during the electrophoretic migration said components of said samples in said channels and to identify the channel in which the detected components are located as said components pass through said medium adjacent to said detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of continuously analytically observing the separation of samples into a plurality of components by electrophoresis simultaneously for a plurality of samples which comprises:
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introducing samples containing multiple components into separate channels in an electrophoresis medium; subjecting said samples to an electric potential in said channels of said electrophoresis medium to cause components of each sample to migrate along said channel; and continuously in time detecting said components in each sample simultaneously during the electrophoretic migration, at a location separated from the position of sample introduction with a detector disposed in a fixed position substantially across the width of said medium, as said components pass through said medium in their respective channels. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. Method of sequencing nucleic acids which comprises:
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introducing samples containing nucleotide chains into separate channels in an electrophoresis medium; subjecting said samples to an electric potential in said channels of said electrophoresis medium to cause nucleotide chains of each sample to migrate along said channel; and continuously in time detecting said nucleotide chains in each channel simultaneously during the electrophoretic migration, at a location separated from the position of sample introduction with a detector disposed in a fixed position substantially across the width of said medium, as said nucleotide chains pass through said medium in their respective channels. - View Dependent Claims (23, 24, 25)
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Specification