COMPOSITIONS AND TECHNIQUES FOR NUCLEIC ACID PRIMER EXTENSION

    公开(公告)号:US20190241945A1

    公开(公告)日:2019-08-08

    申请号:US16265942

    申请日:2019-02-01

    申请人: OMNIOME, INC.

    IPC分类号: C12Q1/6853

    CPC分类号: C12Q1/6853

    摘要: A method of characterizing a nucleic acid that includes steps of (a) contacting a primer-template nucleic acid hybrid with a polymerase and a mixture of nucleotides to produce an extended primer hybrid and to form a stabilized ternary complex including the extended primer hybrid, the polymerase and a nucleotide cognate of the next base in the template, wherein the mixture contains nucleotide cognates of four different base types, wherein the nucleotide cognate of the first base type has a reversible terminator, and wherein nucleotide cognates of the second, third and fourth base types are extendable; (b) detecting the stabilized ternary complex to distinguish the next base from other base types in the template; and (c) determining the presence of a base multiplet in the template nucleic acid, the base multiplet including the first base type followed by the next base.

    NUCLEIC ACID OLIGOMER FOR RNA HYBRID FORMATION

    公开(公告)号:US20190194746A1

    公开(公告)日:2019-06-27

    申请号:US16083347

    申请日:2017-03-09

    摘要: A nucleic acid oligomer for RNA hybrid formation, including a structure formed of from 3 to 50 continuous units of at least one unit of a nucleotide unit represented by the following General Formula (1) or a nucleotide unit represented by the following General Formula (2); and having a base length of from 8 bases to 50 bases: in which in the formulae, R1 represents a hydrogen atom, an alkoxy group, an alkenyloxy group, an acyloxy group, a trialkylsilyloxy group, or a halogenyl group, and, in the formulae, each Bs1 independently represents a pyrimidine base that may have a protecting group, a hydrogen atom bonded to a carbon atom at the 5-position of the pyrimidine base may be substituted with a group other than a hydrogen atom, in the formulae, each X independently represents S−Z+ or BH3—Z+, Z+ represents a counter cation, each R2 and R3 independently represents a hydrogen atom, or an alkyl group having from 1 to 10 carbon atoms, and R2 and R3 may be bonded to each other to form a ring.

    PROCESS FOR THE AMPLIFICATION OF NUCLEIC ACIDS AND USE OF A KIT FOR CARRYING OUT THE SAME

    公开(公告)号:US20190185914A1

    公开(公告)日:2019-06-20

    申请号:US16328141

    申请日:2017-08-21

    申请人: AGCT GmbH

    摘要: It is disclosed a method for amplification of nucleic acids in which substantially use is made of the fact that a pre-defined nucleic acid chain (target sequence) can be multiplied/amplified in the presence of a target sequence-specific activator oligonucleotide. The target sequence-specific activator oligonucleotide causes the separation of re-synthesized complementary primer extension products by means of strand displacement, so that a new primer oligonucleotide can attach to the respective template strand. The thus formed complex of a primer oligonucleotide and a template strand can initiate a new primer extension reaction. The thus formed primer extension products in turn function as templates, so that an exponential amplification reaction results.Here, the activator oligonucleotide itself does not function as a template and preferably is inert over a primer extension reaction. The activator oligonucleotide functions as a co-factor in the reaction that regenerates the single-stranded state of the relevant strand segments of the templates needed for the reaction.By the use of a set of components comprising at least one primer oligonucleotide, at least one polymerase, a set of substrates for polymerase (e.g., dNTPs), and at least one specific activator oligonucleotide a nucleic acid to be amplified can be amplified linearly.By the use of such a set and a second primer oligonucleotide a nucleic acid to be amplified can be amplified exponentially, wherein the resulting specific primer extension products are used for further primer extension reactions as templates.