Silkworm synthetic biology: Toolkit development, chassis engineering, and biomanufacturing applications

Area of Science:

• Insect synthetic biology
• Biotechnology
• Materials Science

Background:

• Silkworms (Bombyx mori) possess a well-defined genetic background and efficient protein production capabilities.
• Established methods for germline engineering and a robust silk gland make silkworms ideal for synthetic biology.
• Recent advancements in genetic engineering have expanded silkworm research beyond traditional manipulation.

Purpose of the Study:

• To review progress in silkworm synthetic biology, focusing on chassis features, engineering tools, applications, and future directions.
• To highlight the silkworm's potential as an insect chassis for biomanufacturing and genetic improvement.
• To identify current limitations and future opportunities in silkworm-based synthetic biology.

Main Methods:

• Review of genetic and genomic resources for silkworms.
• Analysis of engineering toolkits including transgenesis, genome editing, and gene regulation systems.
• Examination of applications in functional genomics, protein production, and biomaterials.

Main Results:

• Silkworms exhibit key attributes for synthetic biology: genetic resources, germline engineering feasibility, and silk gland potential.
• A comprehensive toolkit for silkworm engineering is available, including advanced gene editing and regulatory systems.
• Diverse applications are demonstrated, from recombinant protein production to advanced silk biomaterials.

Conclusions:

• The silkworm is an emerging, programmable insect chassis with significant potential for basic research and biotechnology.
• Overcoming bottlenecks in adaptability, standardization, and biosafety will further enhance silkworm applications.
• Future opportunities lie in integrating pan-genomics, multi-omics, AI, and iterative design frameworks for silkworm synthetic biology.