Abstract

Provided are affinity-based methods of isolating biological entities via a surface antigen from a sample with non-chromatographic and chromatographic methods being provided. Also provided is a dextran polymer, kits for use in the method of isolating a biological entity and an apparatus for performing the methods.

IPC Classes  ?

• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals
• C08B 37/02 - DextranDerivatives thereof
• G01N 33/548 - Carbohydrates, e.g. dextran
• G01N 33/569 - ImmunoassayBiospecific binding assayMaterials therefor for microorganisms, e.g. protozoa, bacteria, viruses

Abstract

The invention relates to a device, a method, and a kit for separating particles of different sizes in a liquid. The invention additionally relates to applications of the device. The device and the method involve the capability of binding particles to solid phase particles with different diameters in a liquid, whereby the hydrodynamic diameter of the solid-phase particles determines whether the particles can pass through pores of a filter element, the diameter of said pores being modifiable in a controlled manner (e.g., the diameter can be increased or decreased). Thus, particles of equal size (e.g., B-cells and T-cells) of a liquid can be separated from one another with a high degree of separation efficiency, wherein the particles can be separated simply, quickly, and inexpensively. High yields can be produced, and the particles can be provided in a therapeutically applicable liquid.

IPC Classes  ?

• B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 61/18 - Apparatus therefor
• B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
• H10N 30/20 - Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
• H10N 30/857 - Macromolecular compositions

Abstract

Provided are affinity-based methods of isolating biological entities via a surface antigen from a sample with non-chromatographic and chromatographic methods being provided. Also provided is a dextran polymer, kits for use in the method of isolating a biological entity and an apparatus for performing the methods.

IPC Classes  ?

• G01N 33/548 - Carbohydrates, e.g. dextran
• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals
• G01N 33/569 - ImmunoassayBiospecific binding assayMaterials therefor for microorganisms, e.g. protozoa, bacteria, viruses
• C08B 37/02 - DextranDerivatives thereof

Abstract

The invention relates to a device, a method, and a kit for separating particles of different sizes in a liquid. The invention additionally relates to applications of the device. The device and the method involve the capability of binding particles to solid-phase particles with different diameters in a liquid, whereby the hydrodynamic diameter of the solid-phase particles determines whether the particles can pass through pores of a filter element, the diameter of said pores being modifiable in a controlled manner (e.g. the diameter can be increased or decreased). Thus, particles of equal size (e.g. B-cells and T-cells) of a liquid can be separated from one another with a high degree of separation efficiency, wherein the particles can be separated simply, quickly, and inexpensively. High yields can be produced, and the particles can be provided in a therapeutically applicable liquid.

IPC Classes  ?

• B01D 69/00 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor

Abstract

Provided are affinity-based methods of isolating biological entities via a surface antigen from a sample with non-chromatographic and chromatographic methods being provided. Also provided is a dextran polymer, kits for use in the method of isolating a biological entity and an apparatus for performing the methods.

IPC Classes  ?

• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals

Abstract

A first aspect of the invention relates to a syringe housing which can have the following elements: a syringe body which has a first open end and a second open end, a first channel being formed between the two ends; a first membrane which is arranged such that the membrane extends substantially perpendicularly to the longitudinal direction of the first channel over the cross-section thereof; a syringe body attachment which has a first open end and a second open end, a second channel being formed between the two ends; a second membrane which is arranged such that the membrane extends substantially perpendicularly to the longitudinal direction of the second channel over the cross-section thereof; wherein the second open end of the syringe body and the first open end of the syringe body attachment are designed so as to be connectable in a formfitting manner and thus form the syringe housing, the first channel and the second channel form a continuous channel in the connected state of the syringe housing, and the first membrane and the second membrane define an extraction volume in the region of the continuous channel. Furthermore, different embodiments provide a pipette device which is designed for the automatic use of the syringe housing according to the invention.

IPC Classes  ?

• G01N 1/00 - SamplingPreparing specimens for investigation
• B01L 3/02 - BurettesPipettes
• B01L 9/00 - Supporting devicesHolding devices
• G01N 35/10 - Devices for transferring samples to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
• B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers

Abstract

A first aspect of the invention relates to a syringe housing which can have the following elements: a syringe body which has a first open end and a second open end, a first channel being formed between the two ends; a first membrane which is arranged such that the membrane extends substantially perpendicularly to the longitudinal direction of the first channel over the cross-section thereof; a syringe body attachment which has a first open end and a second open end, a second channel being formed between the two ends; and a second membrane which is arranged such that the membrane extends substantially perpendicularly to the longitudinal direction of the second channel over the cross-section thereof; wherein the second open end of the syringe body and the first open end of the syringe body attachment are designed so as to be connectable in a formfitting manner and thus form the syringe housing, the first channel and the second channel form a continuous channel in the connected state of the syringe housing, and the first membrane and the second membrane define an extraction volume in the region of the continuous channel. Furthermore, different embodiments provide a pipette device which is designed for the automatic use of the syringe housing according to the invention.

IPC Classes  ?

• G01N 30/60 - Construction of the column

Abstract

Provided are affinity-based methods of isolating biological entities via a surface antigen from a sample with non-chromatographic and chromatographic methods being provided. Also provided is a dextran polymer, kits for use in the method of isolating a biological entity and an apparatus for performing the methods.

IPC Classes  ?

• G01N 33/543 - ImmunoassayBiospecific binding assayMaterials therefor with an insoluble carrier for immobilising immunochemicals

Abstract

The invention relates to a device, a method, and a kit for separating particles of different sizes in a liquid. The invention additionally relates to applications of the device. The device and the method involve the capability of binding particles to solid-phase particles with different diameters in a liquid, whereby the hydrodynamic diameter of the solid-phase particles determines whether the particles can pass through pores of a filter element, the diameter of said pores being modifiable in a controlled manner (e.g. the diameter can be increased or decreased). Thus, particles of equal size (e.g. B-cells and T-cells) of a liquid can be separated from one another with a high degree of separation efficiency, wherein the particles can be separated simply, quickly, and inexpensively. High yields can be produced, and the particles can be provided in a therapeutically applicable liquid.

IPC Classes  ?

• B01D 69/00 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor