摘要:
Methods are disclosed for screening for the occurrence of gene silencing (e.g., post transcriptional gene silencing) in an organism. Also provided are methods for isolating silencing agents so identified.
摘要:
A method to silence a gene in cells by post-transcriptional gene silencing is described which method employs short RNA molecules (SRMs). SRMs are short sense RNA molecules (SSRMs) and short antisense RNA molecules (SARMs) which SARMs are complementary to a region of a target RNA transcribed from a gene to be silenced and said SSRMs correspond to the sequence of the target RNA.
摘要:
Disclosed are a variety of methods for achieving enhanced expression from a target nucleotide sequence in a plant e.g. comprising the step of transiently introducing into a tissue of a plant (e.g. a leaf) a first nucleic acid comprising the target nucleotide sequence and a second nucleic acid encoding a Post Transcriptional Gene Silencing (PTGS) suppressor protein (preferably of viral or plant origin), wherein the first and second nucleic acids are comprised within a single binary vector construct, or the first and second nucleic acid sequences are comprised within a first binary vector and a second binary vector construct respectively. The plant tissue may then be harvested for the protein. Such methods can give much higher levels of gene expression than are obtainable using stable transgenes, or certain replicating vectors. Also disclosed are specific PTGS suppressor proteins: potato virus X (pvx) p25 protein; african cassava mosaic virus (acmv) AC2 protein; rice yellow mottle virus (rymv) P1 protein; tomato bushy stunt virus (tbsv) 19K protein; plus variants of these. These suppressors may be used in any PTRS context, including the enhancement of transient expression systems.
摘要:
Disclosed are a variety of methods for achieving enhanced expression from a target nucleotide sequence in a plant e.g. comprising the step of transiently introducing into a tissue of a plant (e.g. a leaf) a first nucleic acid comprising the target nucleotide sequence and a second nucleic acid encoding a Post Transcriptional Gene Silencing (PTGS) suppressor protein (preferably of viral or plant origin), wherein the first and second nucleic acids are comprised within a single binary vector, construct, or the first and second nucleic acid sequences are comprised within a first binary vector and a second binary vector construct respectively. The plant tissue may then be harvested for the protein. Such methods can give much higher levels of gene expression than are obtainable using stable transgenes, or certain replicating vectors. Also disclosed are specific PTGS suppressor proteins: potato virus X (pvx), p25 protein; african cassava mosaic virus (acmv) AC2 protein; rice yellow mottle virus (rymv) P1 protein; tomato bushy stunt virus (tbsv) 19K protein; plus variants of these. These suppressors may be used in any PTRS context, including the enhancement of transient expression systems.
摘要:
Methods are disclosed for screening for the occurrence of gene silencing (e.g., post transcriptional gene silencing) in an organism. Also provided are methods for isolating silencing agents so identified.
摘要:
Methods are disclosed for screening for the occurrence of gene silencing (e.g., post transcriptional gene silencing) in an organism. Also provided are methods for isolating silencing agents so identified.
摘要:
Methods are disclosed for screening of the occurrence of gene silencing (e.g. post transcriptional gene silencing) in an organism. Also provided are methods for isolating silencing agents so identified.