摘要:
Provided is a method of separating cells using a hydrophobic solid support. The method comprises contacting a solution containing cells with a hydrophobic solid support having a water contact angle between 70 and 90 degrees. By allowing cells to be adsorbed to the hydrophobic solid substrate, the cells can be separated. Thus, the cell separation efficiency can be rapidly and simply increased.
摘要:
A gene analysis apparatus includes a sample preparation chip in which a polymerase chain reaction (“PCR”) sample is prepared, a PCR chip in which a PCR is performed on the PCR sample, and a package layer on which the sample preparation chip and the PCR chip are mounted. The package layer includes a channel through which a material flows from the sample preparation chip to the PCR chip. The sample preparation chip and the PCR chip are on a same side or on opposing sides of the package layer.
摘要:
A microfluidic valve unit for controlling the flow of fluid flowing along a channel, and a method of fabricating the same are provided. The valve unit includes a channel formed in a platform; a valve filler which includes a phase transition material that is disposed in the channel in a solid state at room temperature to close the channel and is melted when energy is applied thereto; and at least one capillary channel which extends from a sidewall of the channel and into which the valve filler flows when the valve filler is melted, wherein the at least one capillary channel has a cross-sectional area which is less than a cross-sectional area of the channel.
摘要:
A micro-device for disrupting cells includes a first chamber in which the cells are disrupted, a second chamber which is pressurized and depressurized, a flexible membrane which separates the first chamber and the second chamber and is vibrated by pressuring and depressurizing the second chamber, and a micro-unit confined in the first chamber, where the micro-unit disrupts the cells in the first chamber
摘要:
A micro-device for disrupting cells includes a first chamber in which the cells are disrupted, a second chamber which is pressurized and depressurized, a flexible membrane which separates the first chamber and the second chamber and is vibrated by pressuring and depressurizing the second chamber, and a micro-unit confined in the first chamber, where the micro-unit disrupts the cells in the first chamber.
摘要:
A method of lysing at least one of a cell and a virus, the method including: contacting a sample, which includes at least one of a cell and a virus, with a plurality of beads which are disposed in a first chamber to obtain a combination of the sample and the beads; and agitating the combination of the sample and the beads to lyse the at least one of the cell and the virus, wherein in the first chamber a liquid volume fraction is 0.6 or less, and wherein the liquid volume fraction is a value obtained by dividing a liquid volume of the first chamber by a pure void volume equivalent to a sum of the liquid volume of the first chamber and a void volume of the first chamber.
摘要:
Provided is a method of isolating and purifying nucleic acids using an immobilized hydrogel or polyethylene glycol (PEG)-hydrogel copolymer. The method includes: immobilizing a functional group-containing hydrogel or PEG-hydrogel copolymer on a substrate; adding a mixed sample solution containing a salt and nucleic acids to the hydrogel- or PEG-hydrogel copolymer-immobilized substrate to bind the nucleic acids to the hydrogel or the PEG-hydrogel copolymer; washing the nucleic acid-bound hydrogel or PEG-hydrogel copolymer; and eluting the nucleic acids from the hydrogel or the PEG-hydrogel copolymer using an elution solvent. Therefore, binding and elution of nucleic acids can be performed even with no addition of a separate chemical substance, and an effect on a subsequent process such as PCR can be minimized. Furthermore, the amount and intensity for binding nucleic acids can be adjusted according to PEG concentration, and the presence of a hydrogel compound on a substrate enables patterning.
摘要:
Provided is a lysis method for cells or viruses, including: immobilizing a metal-ligand complex on a solid support; and mixing the complex immobilized on the support with a cell or virus solution. According to the lysis method, by immobilizing a chemical on a solid support to perform cell lysis, the dilution problem according to the addition of a cell lysis solution can be resolved and a separate process of removing the chemical is not required so as to reduce the steps upon LOC implementation. In addition, since a variety of solid supports, such as chips, beads, nanoparticles etc. can be used, cell lysis apparatuses of various forms can be fabricated.
摘要:
A method of isolating nucleic acid from a sample containing nucleic acid is provided. The method includes contacting the sample with a bifunctional material that contains an amino group and a carboxyl group and is positively charged at a first pH to allow binding of the nucleic acid to the bifunctional material; and extracting the nucleic acid at a second pH higher than the first pH from the complex.
摘要:
A method of isolating nucleic acid from a sample containing nucleic acid is provided. The method includes contacting the sample with a bifunctional material that contains an amino group and a carboxyl group and is positively charged at a first pH to allow binding of the nucleic acid to the bifunctional material; and extracting the nucleic acid at a second pH higher than the first pH from the complex.