Curve2pocket: Створена сторінка: ?intestinalis embryos. Although ZFNs can cleave and induce mutations at specific sites within animal genomes, the possibility [http://www.selleckchem.com/produc...

2016-12-14T06:14:11Z

Створена сторінка: ?intestinalis embryos. Although ZFNs can cleave and induce mutations at specific sites within animal genomes, the possibility [http://www.selleckchem.com/produc...

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?intestinalis embryos. Although ZFNs can cleave and induce mutations at specific sites within animal genomes, the possibility [http://www.selleckchem.com/products/BKM-120.html BKM120 solubility dmso] of mutations being introduced to non-specific sites cannot be ruled out completely (Gupta et?al. 2011). To address this issue, we determined sequences of the off-target sites in the genome of embryos injected with EGFP-ZFNs. In the genome of C.?intestinalis, we found 15 potential off-target sites of EGFP-ZFNs which contained three mismatched nucleotides compared with the on-target site of EGFP-ZFNs used in the in silico search. Seven out of 15 potential off-target sites were selected for analyses because these sites could be amplified by PCR and did not have a detectable polymorphism (Table?2). Among the seven potential off-target sites, we identified two off-target sites that were mutated with lower frequency than the on-target site in the embryos injected with 750?fg each of EGFP-ZFN mRNAs (Table?3). The other sites did not have a mutation. To confirm this, we further sequenced more than 100 clones in two of the non-mutated sites (OffT11-1 and OffT38 in Table?3), and did not detect any mutation (Table?3). About the two off-target sites, we examined whether the frequency of their mutations is dependent on the amount of EGFP-ZFN mRNAs introduced into embryos. We analyzed genomic DNAs from embryos injected with different amounts of EGFP-ZFN mRNAs. As a result, mutations on the two off-target sites were induced in a concentration-dependent manner (Tables?4 and 5), supporting [http://www.selleckchem.com/products/pexidartinib-plx3397.html Pexidartinib] that the mutations were introduced by EGFP-ZFNs. We did not detect mutations in either off-target site when EGFP-ZFNs [https://en.wikipedia.org/wiki/Diosmetin Diosmetin] of normally or abnormally developed embryos that were injected with different amounts of EGFP-ZFN mRNAs. In this experiment, we used wild type animals that did not have the EGFP gene in their genomes because we wanted to demonstrate the toxicities of EGFP-ZFNs on embryogenesis without the damage from the double-strand break of the genome. The percentage of normally developed embryos was normalized using the score of uninjected control embryos (Fig.?3). When 750 or 1500?fg each of EGFP-ZFN mRNAs was injected, the ZFNs did not have an adverse effect on embryogenesis. A larger amount of ZFNs led to defects in embryogenesis.

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Curve2pocket: Створена сторінка: ?intestinalis embryos. Although ZFNs can cleave and induce mutations at specific sites within animal genomes, the possibility [http://www.selleckchem.com/produc...