摘要:
RNA may be transcribed using a nucleotide reagent as the promoter. The reagent may enable RNA to be transcribed without sequence specification and without protein cofactors, by means of an RNA polymerase that is known to be DNA-dependent such as the RNA polymerase of the phage T7, or by means of new, mutated RNA polymerase with the ability to synthesize a transcription product of polynucleotide matrix with a higher yield when the matrix is RNA than when the matrix is DNA. This type of RNA polymerase can be obtained by effecting mutations on a coding gene for a wild-type RNA polymerase, and then by selecting the mutated RNA polymerase with the ability. The invention can be applied notably to the detection, synthesis or quantification of RNA.
摘要:
The invention concerns a nucleotide sequence coding for a modified protein of interest, said protein of interest having, after purification and immobilization, at least the same biological activity as the native protein of interest and being directly usable, said sequence comprising at least a gene coding for said protein of interest, a nucleotide fragment, called polyK, coding for a succession of at least six lysine residues, and a nucleotide fragment, called polyH, coding for a succession of at least six histidine residues; a vector comprising such a sequence; and a method for obtaining a purifiable and immobilized modified protein of interest.
摘要:
The invention relates to a peptide domain required for interaction between the envelope of a virus pertaining to the HERV-W interference group and a hASCT receptor, comprising an N end point and a C end point. Said peptide domain is defined, at the N end point thereof, by a pattern formed by the amino acids L (Z)-proline-cysteine-X-cysteine in which Z is any amino acid, is a whole number between 2 and 30, and X is any amino acid, and at the C end point thereof, by a pattern formed by the amino acids serine-aspartic acid-Xa-Xb-Xc-Xd-Xe-aspartic acid-Xf-Xg-(Z) in which Xa, Xb, Xc, Xd, Xe, Xf, Xg are any amino acids, Z is any amino acid, B is a whole number between 15 and 25, preferably 20. The peptide domain comprises, between the N end point and the C end point, at least one pattern selected from the following patterns: a pattern formed by the amino acids cysteine-X2-X3-X4-X5-X6-cysteine in which X2, X3, X4, X5, X6 are any amino acids, and a pattern formed by the amino acids cysteine-X7-X8-X9-X10-X11-X12-X13-X14-X15-cysteine-trytophane in which X7, X8, X9, X10, X11, X12, X13, X14, X15 are any amino acids.
摘要:
An RNA amplification method is particularly useful for diagnosing bacterial or viral infections or genetic disorders and for cell typing. The method includes the steps of denaturing a solution containing RNA, synthesizing a first cDNA strand from a suitable primer in the presence of reverse transcriptase, denaturing the heteroduplex formed, synthesizing a second cDNA strand from a second primer in the presence of DNA polymerase and then subjecting the cDNA formed to a sufficient number of amplification cycles. All the reactants and solvents are first placed in the same container to provide a single manipulation step that avoids the risk of contamination.
摘要:
The present invention relates to a method for generating transcripts from: at least one RNA sequence to be amplified comprising a “primer” region and a region of interest, and an amplification primer comprising a promoter region, and a region capable of hybridizing to said “primer” region of the RNA sequence to be amplified, said method being carried out at constant temperature, and comprising the following steps: a) said primer is hybridized with the RNA to be amplified, b) the primer is extended by means of a reverse transcriptase enzymatic activity in order to generate a complementary deoxyribonucleic acid (cDNA) sequence of the RNA to be amplified, c) the RNA to be amplified, hybridized to said cDNA, is cleaved by means of an enzyme that has a ribonuclease H activity, so as to obtain fragments of RNA to be amplified, hybridized to said cDNA, d) the ends of said fragments of RNA to be amplified are extended by means of a reverse transcriptase and strand displacement enzyme, so as to obtain RNA-DNA/DNA hybrids, e) RNA transcripts are obtained from the RNA-DNA/DNA hybrids formed in step d), by means of an enzyme that has an RNA polymerase activity.
摘要:
An RNA amplification method is particularly useful for diagnosing bacterial or viral infections or genetic disorders and for cell typing. The method includes the steps of denaturing a solution containing RNA, synthesizing a first cDNA strand from a suitable primer in the presence of reverse transcriptase, denaturing the heteroduplex formed, synthesizing a second cDNA strand from a second primer in the presence of DNA polymerase and then subjecting the cDNA formed to a sufficient number of amplification cycles. All the reactants and solvents are first placed in the same container to provide a single manipulation step that avoids the risk of contamination.
摘要:
Composition comprising two pathogenic and/or infective agents associated with multiple sclerosis, namely a first agent which consists of a human virus possessing reverse transcriptase activity and related to a family of endogenous retroviral elements, or a variant of said virus, and a second agent, or a variant of said second agent, these two pathogenic and/or infective agents originating from the same viral strain chosen from the strains designated, respectively, POL-2 deposited with the ECACC on Jul. 22, 1992 under Accession Number V92072202 and MS7PG deposited with the ECACC on Jan. 8, 1993 under Accession Number V93010816, and from their variant strains.
摘要:
Composition including two pathogenic and/or infective agents associated with multiple sclerosis, namely a first agent which consists of a human virus possessing reverse transcriptase activity and related to a family of endogenous retroviral elements, or a variant of the virus, and a second agent, or a variant of the second agent, these two pathogenic and/or infective agents originating from the same viral strain chosen from the strains designated, respectively, POL-2 deposited with the ECACC on Jul. 22, 1992 under Accession Number V92072202 and MS7PG deposited with the ECACC on Jan. 8, 1993 under Accession Number V93010816, and from their variant strains.
摘要:
A method for in vitro diagnosis or prognosis of testicular cancer in a biological sample from a patient suspected of suffering from testicular cancer, having a step of detecting the presence or absence of methylation of CpG dinucleotides in at least one genomic DNA target sequence of the sample, the target sequence being selected from at least one of the sequences identified in SEQ ID NOS: 1 to 7 or from at least one sequence which exhibits at least 99% identity with one of the sequences identified in SEQ ID NOS: 1 to 7 and the sequences complementary thereto; to the DNA sequences and to the use thereof as a testicular cancer marker.
摘要翻译:一种用于体外诊断或预测来自疑似患有睾丸癌的患者的生物样品中睾丸癌的方法,该方法具有检测样品中至少一个基因组DNA靶序列中CpG二核苷酸甲基化的存在或不存在的步骤 靶序列选自SEQ ID NO:1至7中鉴定的至少一个序列或至少一个与SEQ ID NO:1至7中鉴定的序列之一具有至少99%同一性的序列;以及 与之互补的序列; DNA序列及其作为睾丸癌标志物的用途。