摘要:
The present disclosure provides a non-naturally occurring miRNA having a stem-loop structure comprising a scaffold derived from a first endogenous miRNA (e.g., miR-196a-2 or miR-204), a mature strand derived from a second endogenous miRNA, and a star strand sequence that is at least partially complementary to the mature strand sequence. The present disclosure also provides a non-naturally occurring miRNA having a stem-loop structure comprising a scaffold derived from an endogenous miRNA (e.g., miR-196a-2 or miR-204), a mature strand designed t be at least partially complementary to a target RNA, and a star strand sequence that is at least partially complementary to the mature strand sequence. The methods and compositions of the disclosure may be used to mediate gene silencing via the RNAi pathway.
摘要:
The present disclosure provides non-naturally occurring miR-196a-2 miRNAs and non-naturally occurring miR-204 miRNAs. The non-naturally occurring miRNAs of the disclosure have mature strand sequences distinct from their endogenous counterparts. The disclosure also provides methods of selecting mature strand sequences that function optimally in non-naturally occurring miR-196a-2 miRNAs. The methods and compositions of the disclosure may be used to mediate gene silencing via the RNAi pathway.
摘要:
The present disclosure provides a non-naturally occurring miRNA having a stem-loop structure comprising a scaffold derived from a first endogenous miRNA (e.g., miR-196a-2 or miR-204), a mature strand derived from a second endogenous miRNA, and a star strand sequence that is at least partially complementary to the mature strand sequence. The present disclosure also provides a non-naturally occurring miRNA having a stem-loop structure comprising a scaffold derived from an endogenous miRNA (e.g., miR-196a-2 or miR-204), a mature strand designed t be at least partially complementary to a target RNA, and a star strand sequence that is at least partially complementary to the mature strand sequence. The methods and compositions of the disclosure may be used to mediate gene silencing via the RNAi pathway.
摘要:
The present disclosure provides non-naturally occurring miR-196a-2 miRNAs and non-naturally occurring miR-204 miRNAs. The non-naturally occurring miRNAs of the disclosure have mature strand sequences distinct from their endogenous counterparts. The disclosure also provides methods of selecting mature strand sequences that function optimally in non-naturally occurring miR-196a-2 miRNAs. The methods and compositions of the disclosure may be used to mediate gene silencing via the RNAi pathway.
摘要:
The present disclosure provides methods, libraries and computer program products for determining whether a phenotype induced by a candidate siRNA for a target gene in an RNAi experiment is target specific or a false positive. Through the use of a control siRNA that has one or two seed sequences of six or seven bases in combination with a neutral scaffolding sequence, a distinction can be made between false positive and true positive analyses of functionality.
摘要:
The present invention provides methods, libraries and computer program products for selecting siRNA that reduce off-target effects and methods for gene silencing using these siRNAs. By comparing nucleotide sequences at positions 2-7 or 2-8 of the sense and/or antisense regions of candidate siRNAs to the 3′ UTR region of mRNAs, one can select siRNAs that have reduced off-target effects.
摘要:
Compositions and methods for inhibiting the actions of non-coding RNAs such as miRNAs and piRNAs are provided. The compositions comprise single or double stranded oligonucleotides conjugated with Minor Groove Binders (“MGBs”). The oligonucleotides can vary in length, can contain nucleotides having one or more modifications, and have regions that are substantially complementary to one or more mature miRNAs or piRNAs.
摘要:
The present invention provides compositions and methods for inhibiting gene silencing by the RNAi pathway. The RNAi inhibitors of the invention have a reverse complement (RC) region to the target molecule of interest (e.g., miRNA) in association with at least one flanking region coupled to either at the 3′ or 5′ end of the RC region. The flanking regions can be single-stranded or can have one or more regions of double stranded nucleic acid with or without a hairpin loop. The RNAi inhibitors described herein can inhibit endogenous targets, including but not limited to microRNAs, or piRNAs, or can be used to inhibit the effects of exogenously introduced molecules, such as synthetic siRNAs, siRNAs expressed from vector constructs (e.g., viral expression systems), or siRNAs generated by enzymatic methods. Inhibition is specific, potent, prolonged, and can be performed on a single target or multiple targets simultaneously.
摘要:
Compositions and methods for inhibiting the actions of non-coding RNAs such as miRNAs and piRNAs are provided. The compositions comprise single or double stranded oligonucleotides conjugated with Minor Groove Binders (“MGBs”). The oligonucleotides can vary in length, can contain nucleotides having one or more modifications, and have regions that are substantially complementary to one or more mature miRNAs or piRNAs.
摘要:
Compositions and methods for inhibiting the actions of non-coding RNAs such as miRNAs and piRNAs are provided. The compositions comprise single or double stranded oligonucleotides conjugated with Minor Groove Binders (“MGBs”). The oligonucleotides can vary in length, can contain nucleotides having one or more modifications, and have regions that are substantially complementary to one or more mature miRNAs or piRNAs.