Abstract

Simple SummaryOne of the most powerful gene editing approaches is the CRISPR (clustered regularly interspaced short palindromic repeats)-Cas (CRISPR-associated) tool. The silkworm (Bombyx mori) has a great impact on the global economy, playing a pivotal role in the sericulture industry. However, B. mori came into the spotlight by representing one of science’s greatest contributors, being used to establish extraordinary bioreactors for the production of target proteins and illustrating a great experimental model organism. Herein, we focus on progress made in the field of B. mori’s genome manipulation by using CRISPR-Cas. In order to edit B. mori’s genome, remarkable advances were made, such as exposing gene functions and developing mutant lines that exhibit enhanced resistance against B. mori nucleopolyhedrovirus (BmNPV). We also discuss how CRISPR-Cas accelerated the fundamental investigation in B. mori, and beyond, thus highlighting the great potential of the insect’s biotechnology in numerous scientific fields.CRISPR (clustered regularly interspaced short palindromic repeats)-Cas (CRISPR-associated) represents a powerful genome editing technology that revolutionized in a short period of time numerous natural sciences branches. Therefore, extraordinary progress was made in various fields, such as entomology or biotechnology. Bombyx mori is one of the most important insects, not only for the sericulture industry, but for numerous scientific areas. The silkworms play a key role as a model organism, but also as a bioreactor for the recombinant protein production. Nowadays, the CRISPR-Cas genome editing system is frequently used in order to perform gene analyses, to increase the resistance against certain pathogens or as an imaging tool in B. mori. Here, we provide an overview of various studies that made use of CRISPR-Cas for B. mori genome editing, with a focus on emphasizing the high applicability of this system in entomology and biological sciences.

Highlights

  • The life sciences research fields were revolutionized by the outstanding development of various genome editing tools

  • There are three remarkable technologies, namely those relying on programmable nucleases (i.e., the transcription activator like effector nucleases (TALENs)), zinc finger nucleases (ZFNs), and clustered regularly interspaced short palindromic repeat - associated nucleases (CRISPR-Cas) [2,3]

  • Being the most feasible technology in terms of genome editing, the CRISPR-Cas system is currently used in many laboratories specialized in medicine, agriculture, alimentary industry, and entomology research [34,165]

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Summary

Introduction

The life sciences research fields were revolutionized by the outstanding development of various genome editing tools. By using engineered nucleases, remarkable advances are being made regarding the correction of genetic mutations, gene expression regulation, and the development of therapeutic agents; these approaches are used for a better understanding of gene functions and the mechanisms underlying the development of certain genetic disorders or various diseases [4] When it comes to genome editing, it is crucial to avoid off-target effects, but overall, the CRISPR-Cas system exhibits reliable results, owing to a great degree of fidelity [4,5]. Since its discovery in bacteria, the CRISPR-Cas system has been continuously exploited, representing an extremely versatile tool for the scientific community due to its reprogrammable feature This system is used to edit the genomes of various organisms, such as bacteria, insects, plants, or human cells [6]. The key role of B. mori in the scientific fields will be discussed

The CRISPR-Cas System
The CRISPR-Cas Complex Role in the Immunity System
The CRISPR-Cas System as a Genome Editing Tool
CRISPR-Cas9 in Entomology
Bombyx mori
Evaluation of cytotoxic drugs impact
Conclusions

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