摘要:
The invention relates to composite particles comprising a hydrophobic polymer core and inorganic nanoparticles. Said hydrophobic polymer forms a polymer matrix inside which the inorganic nanoparticles are stabilized and distributed in a relatively homogenous manner. Said particles are at least partially surrounded by an amphophilic copolymer comprising a hydrophobic part and a hydrophilic part, said hydrophobic part being at least partially immobilized in the polymer matrix. The inventor also relates to the preparation method thereof, the conjugates comprising such particles and a ligand and the use of same in reactants and therapeutic compositions.
摘要:
The invention concerns composite nanospheres having a diameter ranging between about 50 and 1000 nm plus or minus 5%, preferably between about 100 and 500 nm plus or minus 5% and advantageously between 100 and 200 nm plus or minus 5%, and comprising an essentially liquid core consisting of an organic phase and inorganic nanoparticles, distributed inside the organic phase, and a skin consisting of at least a hydrophilic polymer derived from the polymerisation of at least one water soluble monomer, in particular N-alkylacrylamide or a N—N-dialkylacrylamide; conjugates derived from said nanospheres; their preparation methods and their uses.
摘要:
The invention concerns composite nanospheres having a diameter ranging between about 50 and 1000 nm plus or minus 5%, preferably between about 100 and 500 nm plus or minus 5% and advantageously between 100 and 200 nm plus or minus 5%, and comprising an essentially liquid core consisting of an organic phase and inorganic nanoparticles, distributed inside the organic phase, and a skin consisting of at least a hydrophilic polymer derived from the polymerisation of at least one water soluble monomer, in particular N-alkylacrylamide or a N-N-dialkylacrylamide; conjugates derived from said nanospheres; their preparation methods and their uses.
摘要:
The invention concerns composite nanospheres having a diameter ranging between about 50 and 1000 nm plus or minus 5%, preferably between about 100 and 500 nm plus or minus 5% and advantageously between 100 and 200 nm plus or minus 5%, and comprising an essentially liquid core consisting of an organic phase and inorganic nanoparticles, distributed inside the organic phase, and a skin consisting of at least a hydrophilic polymer derived from the polymerisation of at least one water soluble monomer, in particular N-alkylacrylamide or a N-N-dialkylacrylamide; conjugates derived from said nanospheres; their preparation methods and their uses.
摘要:
The superparamagnetic monodispersed particles comprise a core of a first polymer, an internal layer of a second polymer coating the core and in which a magnetic material is distributed, and an external layer of a third polymer coating the magnetic layer and capable of interacting with at least one biological molecule. At least the second polymer is heat sensitive and has a predetermined lower critical solubility temperature (LCST) of 15-65.degree. C. These particles may be used to isolate at least one biological molecule from a liquid specimen.
摘要:
The invention concerns magnetic and heat-sensitive particles having a predetermined size between 0.05 and 10 &mgr;m, each particle comprising: an inner composite core consisting of a solid organic or inorganic particle, containing within it a magnetic filler; an outer coati based on a polymer capable of interacting with at least a biological molecule, the outer polymer is heat-sensitive and has a predetermined low critical solubility temperature (LCST) ranging between 10 and 100° C. and preferably between 20 and 60° C. The invention also concerns methods for obtaining said particles and their uses. The particles are characterized in that there is an intermediate layer between the inner core and the outer layer isolating said inner core magnetic filler with respect to said functionalized outer layer. Said invention is particularly useful for separating proteins and/or nucleic acids.
摘要:
The invention concerns a method for isolating proteins and/or protein and nucleic acid associations in a sample, comprising steps which consist in: contacting said sample and magnetic colloidal particles comprising a core and a coat wherein: the core is magnetic and is coated with at least a polymer comprising functional groups X selected among amine, hydroxyl, thiol, aldehyde, ester, anhydride, acid chloride, carbonate, carbamate, isocyanate and isothiocyanate groups or mixtures thereof, whereof at least one fraction has reacted with other functional groups of the coat, and the coat consists of a polymer bearing functional groups Z and Z′, capable of ionisation, identical or different, selected among amine, carboxylic acid, ester, anhydride, aldehyde, thiol, disulphide, α-halogenocarbonyl, sulphonic acid, maleimide, isocyanate and isothiocyanate groups to form a mixture; incubating said mixture in predetermined conditions; and separating from the mixture the protein and/or protein and nucleic acid associations complexed on the colloidal particles by applying a magnetic field. The invention also concerns a complex consisting of colloidal particles and proteins, a reagent comprising such a complex or colloidal particles.
摘要:
The magnetic colloidal particles comprise a core and an envelope in which the core is magnetic and is coated with at least one polymer comprising functional groups X chosen from amine, hydroxyl, thiol, aldehyde, ester, anhydride, acid chloride, carbonate, carbamate, isocyanate and isothiocyanate groups, or mixtures thereof, at least one fraction of which has reacted with other functional groups of the envelope, and the envelope comprises a polymer bearing ionizable functional groups, Z and Z′, which may be identical or different, chosen from amine, carboxylic acid, ester, anhydride, aldehyde, thiol, disulfide, α-halocarbonyl, sulfonic acid, maleimide, isocyanate and isothiocyanate groups, which have partially reacted with the functional groups X of the core. These magnetic colloidal particles can be used to isolate biological material.
摘要:
The magnetic colloidal particles comprise a core and an envelope in which the core is magnetic and is coated with at least one polymer comprising functional groups X chosen from amine, hydroxyl, thiol, aldehyde, ester, anhydride, acid chloride, carbonate, carbamate, isocyanate and isothiocyanate groups, or mixtures thereof, at least one fraction of which has reacted with other functional groups of the envelope, and the envelope comprises a polymer bearing ionizable functional groups, Z and Z′, which may be identical or different, chosen from amine, carboxylic acid, ester, anhydride, aldehyde, thiol, disulfide, α-halocarbonyl, sulfonic acid, maleimide, isocyanate and isothiocyanate groups, which have partially reacted with the functional groups X of the core. These magnetic colloidal particles can be used to isolate biological material.
摘要:
The magnetic colloidal particles comprise a core and an envelope in which the core is magnetic and is coated with at least one polymer comprising functional groups X chosen from amine, hydroxyl, thiol, aldehyde, ester, anhydride, acid chloride, carbonate, carbamate, isocyanate and isothiocyanate groups, or mixtures thereof, at least one fraction of which has reacted with other functional groups of the envelope, and the envelope comprises a polymer bearing ionizable functional groups, Z and Z′, which may be identical or different, chosen from amine, carboxylic acid, ester, anhydride, aldehyde, thiol, disulfide, α-halocarbonyl, sulfonic acid, maleimide, isocyanate and isothiocyanate groups, which have partially reacted with the functional groups X of the core. These magnetic colloidal particles can be used to isolate biological material.