Abstract:
A microfluidic group includes a female connector and a male needle connector. The female connector has a connector chamber in a containment body; a duct extending in the containment body to a duct opening on a first face of the connector chamber; a needle entry hole extending from a lateral face of the containment body to a second face, not facing the first face of the connector chamber; and a gasket arranged in the connector chamber. The gasket has a side wall internally delimiting a cavity and extending in part adjacent to the second face of the connector chamber. The cavity of the gasket faces the first face of the connector chamber.
Abstract:
An apparatus for nucleic acid sequencing includes: a base-detection device in a detection site, the base-detection device being configured to detect bases of a portion of a nucleic acid strand at the detection site; and a conveying device, configured to extend the nucleic acid strand and to cause the extended nucleic acid strand to slide through the detection site along a path. The base-detection device includes a plurality of field-effect nanowire detectors, arranged along the path and each including a respective nanowire and nucleic acid probes, which are defined by respective base sequences and are fixed to the respective nanowire.
Abstract:
A method for sequencing a nucleic acid strand, comprising the steps of: providing a solution containing truncated strands having lengths different from one another terminating with a respective dideoxynucleotide from among ddATP, ddTTP, ddGTP, and ddCTP; functionalizing first masses by a donor molecule and second masses by an acceptor molecule such as to generate a light emission when they come into mutual contact; coupling a first mass to a first end of each truncated strand; coupling the second masses to a respective terminal dideoxynucleotide of each strand; applying an AC electrical field having variable frequencies that are such as to generate, on each second mass, a net movement directed towards the first mass; acquiring a plurality of light radiations for each frequency value; and associating each light radiation acquired to a respective dideoxynucleotide and, thus, to a respective nucleotide base.
Abstract:
An apparatus for nucleic acid sequencing includes a nanochannel and a conveying device, configured to move a nucleic acid strand through the nanochannel. The conveying device includes: a first electrode, a second electrode, and a third electrode, which are arranged along the nanochannel so as to be in contact with a fluid occupying the nanochannel, the second electrode being arranged between the first electrode and the third electrode; and a control unit configured to apply a first voltage, a second voltage, and a third voltage, respectively, to the first electrode, the second electrode and the third electrode, for controlling movement of the nucleic acid strand through the nanochannel.
Abstract:
A method for sequencing a nucleic acid strand, comprising the steps of: providing a solution containing truncated strands having lengths different from one another terminating with a respective dideoxynucleotide from among ddATP, ddTTP, ddGTP, and ddCTP; functionalizing first masses by a donor molecule and second masses by an acceptor molecule such as to generate a light emission when they come into mutual contact; coupling a first mass to a first end of each truncated strand; coupling the second masses to a respective terminal dideoxynucleotide of each strand; applying an AC electrical field having variable frequencies that are such as to generate, on each second mass, a net movement directed towards the first mass; acquiring a plurality of light radiations for each frequency value; and associating each light radiation acquired to a respective dideoxynucleotide and, thus, to a respective nucleotide base.
Abstract:
A sample treatment and molecule analysis cartridge is configured to be mounted in a treatment machine vertically. The cartridge has a sample inlet opening, a fluidic inlet, and a fluidic outlet. The cartridge houses an extraction chamber extending vertically from the sample inlet opening and connected to the fluidic inlet; a waste chamber extending vertically, alongside the extraction chamber; and a collector extending along the extraction chamber and the waste chamber and having a smaller height than the extraction chamber and the waste chamber. A fluidic circuit connects together the extraction chamber, the waste chamber, the collector, the fluidic inlet, and the fluidic outlet, and is configured to connect the fluidic outlet to vent openings of the extraction chamber, the waste chamber, and the collector, and to connect the bottom end of the extraction chamber to the fluidic inlet, the waste chamber, and the collector.
Abstract:
An apparatus for nucleic acid sequencing includes: a base-detection device in a detection site, the base-detection device being configured to detect bases of a portion of a nucleic acid strand at the detection site; and a conveying device, configured to extend the nucleic acid strand and to cause the extended nucleic acid strand to slide through the detection site along a path. The base-detection device includes a plurality of field-effect nanowire detectors, arranged along the path and each including a respective nanowire and nucleic acid probes, which are defined by respective base sequences and are fixed to the respective nanowire.
Abstract:
An apparatus for nucleic acid sequencing includes a nanochannel and a conveying device, configured to move a nucleic acid strand through the nanochannel. The conveying device includes: a first electrode, a second electrode, and a third electrode, which are arranged along the nanochannel so as to be in contact with a fluid occupying the nanochannel, the second electrode being arranged between the first electrode and the third electrode; and a control unit configured to apply a first voltage, a second voltage, and a third voltage, respectively, to the first electrode, the second electrode and the third electrode, for controlling movement of the nucleic acid strand through the nanochannel.