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1. US20070067880 - Isolation of proteins involved in posttranscriptional gene silencing and methods of use

Office
États-Unis d'Amérique
Numéro de la demande 11459535
Date de la demande 24.07.2006
Numéro de publication 20070067880
Date de publication 22.03.2007
Numéro de délivrance 7632937
Date de délivrance 15.12.2009
Type de publication B2
CIB
C07H 21/00
CCHIMIE; MÉTALLURGIE
07CHIMIE ORGANIQUE
HSUCRES; LEURS DÉRIVÉS; NUCLÉOSIDES; NUCLÉOTIDES; ACIDES NUCLÉIQUES
21Composés contenant au moins deux unités mononucléotide comportant chacune des groupes phosphate ou polyphosphate distincts liés aux radicaux saccharide des groupes nucléoside, p.ex. acides nucléiques
C07H 21/04
CCHIMIE; MÉTALLURGIE
07CHIMIE ORGANIQUE
HSUCRES; LEURS DÉRIVÉS; NUCLÉOSIDES; NUCLÉOTIDES; ACIDES NUCLÉIQUES
21Composés contenant au moins deux unités mononucléotide comportant chacune des groupes phosphate ou polyphosphate distincts liés aux radicaux saccharide des groupes nucléoside, p.ex. acides nucléiques
04avec le désoxyribosyle comme radical saccharide
C12Q 1/00
CCHIMIE; MÉTALLURGIE
12BIOCHIMIE; BIÈRE; SPIRITUEUX; VIN; VINAIGRE; MICROBIOLOGIE; ENZYMOLOGIE; TECHNIQUES DE MUTATION OU DE GÉNÉTIQUE
QPROCÉDÉS DE MESURE OU DE TEST FAISANT INTERVENIR DES ENZYMES, DES ACIDES NUCLÉIQUES OU DES MICRO-ORGANISMES; COMPOSITIONS OU PAPIERS RÉACTIFS À CET EFFET; PROCÉDÉS POUR PRÉPARER CES COMPOSITIONS; PROCÉDÉS DE COMMANDE SENSIBLES AUX CONDITIONS DU MILIEU DANS LES PROCÉDÉS MICROBIOLOGIQUES OU ENZYMOLOGIQUES
1Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismes; Compositions à cet effet; Procédés pour préparer ces compositions
CPC
C12N 9/22
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
9Enzymes; Proenzymes; Compositions thereof
14Hydrolases (3)
16acting on ester bonds (3.1)
22Ribonucleases ; RNAses, DNAses
C12N 15/8218
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
79Vectors or expression systems specially adapted for eukaryotic hosts
82for plant cells ; , e.g. plant artificial chromosomes (PACs)
8216Methods for controlling, regulating or enhancing expression of transgenes in plant cells
8218Antisense, co-suppression, viral induced gene silencing [VIGS], post-transcriptional induced gene silencing [PTGS]
C12N 15/8283
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
15Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
09Recombinant DNA-technology
63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
79Vectors or expression systems specially adapted for eukaryotic hosts
82for plant cells ; , e.g. plant artificial chromosomes (PACs)
8241Phenotypically and genetically modified plants via recombinant DNA technology
8261with agronomic (input) traits, e.g. crop yield
8271for stress resistance, e.g. heavy metal resistance
8279for biotic stress resistance, pathogen resistance, disease resistance
8283for virus resistance
Déposants The Texas A&;M University System
Inventeurs Mirkov T. Erik
Ingelbrecht Ivan L.
Mandataires King &; Spalding L.L.P.
Titre
(EN) Isolation of proteins involved in posttranscriptional gene silencing and methods of use
Abrégé
(EN)

The present invention includes a method for detecting and isolating sugarcane proteins that interact with the HC-Pro and P1 proteins of SrMV and other proteins involved in gene silencing, particularly in sugarcane. The method uses a two hybrid assay with an HC-Pro, P1, or other silencing-related protein-containing bait protein and a prey protein containing a polypeptide encoded by a DNA molecule in a cDNA library. The method also includes identification of false positives through reverse two-hybrid assays and using in vitro techniques such as farwestern blots or pull down assays where plant physiological conditions may be replicated. Finally, interactions may be confirmed in planta. Some novel proteins used in and discovered using the these methods are also identified. Methods of using viral and plant proteins to regulate silencing in plants such as sugarcane are also discussed.