SPECIFIC SYNTHETIC CHIMERIC XENONUCLEIC ACID GUIDE RNA; s(XNA-gRNA) FOR ENHANCING CRISPR MEDIATED GENOME EDITING EFFICIENCY
申请人:Powell Michael J
公开号:US20190330621A1
公开(公告)日:2019-10-31
The invention provides xenonucleic acids and synthetic chimeric xenonucleic acid guide RNA; s(XNA-gRNA) for enhancing crispr mediated genome editing efficiency. The invention also provides methods and compositions for inducing CRISPR/Cas-based gene editing/regulation (e.g., genome editing or gene expression) of a target nucleic acid (e.g., target DNA or target RNA) in a cell. The methods include using single guide RNAs (sgRNAs) that have been chemically modified with xeno nucleic acids which enhance gene regulation of the target nucleic acid in a primary cell for use in ex vivo therapy or in a cell in a subject for use in in vivo therapy. Additionally, provided herein are methods for preventing or treating a genetic disease in a subject by administering a sufficient amount of a sgRNA that has been chemically modified with xeno nucleic acids to correct a mutation in a target gene associated with the genetic disease.
XENONUCLEIC ACID-MEDIATED MULTIPLEX QPCR CLAMPING TECHNOLOGY FOR LUNG CANCER MUTATION DETECTION
申请人:Sha Michael Y
公开号:US20220025453A1
公开(公告)日:2022-01-27
The invention provides a multiplex method for enriching a plurality of target polynucleotide sequences containing genetic mutations associated with lung cancer comprising: (a) providing a biological sample; (b) isolating DNA from said sample; said DNA including said plurality of target polynucleotide sequences containing genetic mutations; (c) providing a plurality of primer probes targeted to said target polynucleotide sequences said primer probes allowing formation of a PCR product; (d) providing a plurality of target specific xenonucleic acid clamps oligomer probes specific for wildtype polynucleotide sequences; so that during the qPCR process only mutant templates are amplified: (e) admixing the plurality of primer probes and the plurality of xenonucleic clamping probes with the target nucleic acid sample; (f) performing a PCR amplification process in reaction solution under hybridization conditions thereby generating multiple amplicons; and (g) detecting said amplicons and wherein said xenonucleic acid clamps have aza-aza, thio-aza and oxy-aza chemical functionality.
NOVEL METHOD OF COMBINED MOLECULAR CLAMPING AND ALLELE SPECIFIC qPCR TECHNOLOGY FOR KRAS G12C MUTATION DETECTION
申请人:Sun Qing
公开号:US20220025437A1
公开(公告)日:2022-01-27
The invention provides a method for detecting KRAS mutations at one or more of codons, said method comprising the steps of: (a) extracting DNA from a biological sample; (b) assaying the DNA via PCR for KRAS mutations at one or more of codons with at least one set of oligonucleotides, wherein the at least one set of oligonucleotides comprises an allele specific forward primer, a reverse primer, a probe and a xenonucleic acid clamp to block amplification of wild type DNA. The xenonucleic acid clamps have aza-aza, thio-aza and oxy-aza chemical functionality.
Über weitere N-unsubstituierte O-Acyl-hydroxylamine 41. Mitt. über Hydroxylamin-Derivate
作者:G. Zinner、G. Nebel、M. Hitze
DOI:10.1002/ardp.19703030405
日期:——
Durch Hydrolyse O‐acylierter Acethydroximsäureester und durch HCl‐Spaltung O‐acylierter tert. Butyl‐N‐hydroxycarbamate ließen sich weitere O‐Acyl‐hydroxylamine herstellen, darunter auch solche mitAlkoxycarbonyl‐ sowie mono‐ und di‐substituierten Carbamoyl‐Gruppen.