کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5921502 1570991 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Functional analysis of Bombyx Wnt1 during embryogenesis using the CRISPR/Cas9 system
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش حشره شناسی
پیش نمایش صفحه اول مقاله
Functional analysis of Bombyx Wnt1 during embryogenesis using the CRISPR/Cas9 system
چکیده انگلیسی


- The CRISPR/Cas9 system targeting Wnt1 induced embryonic lethality in Bombyx mori.
- Combination of two sgRNAs induced large DNA fragment deletion up to 18 kb.
- BmWnt1 depletion caused down-regulation of Hox genes.

Recently established, custom-designed nuclease technologies such as the clustered regularly interspaced short palindromic repeat (CRISPR)-associated system provide attractive genome editing tools. Targeted gene mutagenesis using the CRISPR/Cas9 system has been achieved in several orders of insects. However, outside of studies on Drosophila melanogaster and the lepidopteron model insect Bombyx mori, little success has been reported, which is largely due to a lack of effective genetic manipulation tools that can be used in other insect orders. To create a simple and effective method of gene knockout analysis, especially for dissecting gene functioning during insect embryogenesis, we performed a functional analysis of the Bombyx Wnt1 (BmWnt1) gene using Cas9/sgRNA-mediated gene mutagenesis. The Wnt1 gene is required for embryonic patterning in various organisms, and its crucial roles during embryogenesis have been demonstrated in several insect orders. Direct injection of Cas9 mRNA and BmWnt1-specific sgRNA into Bombyx embryos induced a typical Wnt-deficient phenotype: injected embryos could not hatch and exhibited severe defects in body segmentation and pigmentation in a dose-dependent manner. Quantitative real-time PCR (qRT-PCR) analysis revealed that Hox genes were down-regulated after BmWnt1 depletion. Furthermore, large deletion, up to 18 Kb, ware generated. The current study demonstrates that using the CRISPR/Cas9 system is a promising approach to achieve targeted gene mutagenesis during insect embryogenesis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Insect Physiology - Volume 79, August 2015, Pages 73-79
نویسندگان
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