Tn5 transposase and tagmentation procedures for massively scaled sequencing projects

Area of Science:

• Molecular Biology
• Genomics
• Biotechnology

Background:

• Massively parallel DNA sequencing requires library preparation, which is costly and time-consuming.
• Tagmentation using Tn5 transposase is efficient but limited by proprietary reagents, hindering innovation.

Purpose of the Study:

• To develop simple, robust procedures for Tn5 transposase production and tagmentation.
• To optimize tagmentation for library construction and explore novel applications.

Main Methods:

• Developed protocols for Tn5 transposase production and reaction optimization.
• Utilized molecular crowding agents to modulate library length and improve cDNA tagmentation.
• Compared custom-produced Tn5 with commercial Tn5 for single-cell RNA sequencing.

Main Results:

• Achieved equal performance of custom-produced Tn5 compared to commercial Tn5 in gene detection and library characteristics.
• Demonstrated efficient tagmentation from subpicogram cDNA amounts using molecular crowding agents.
• Showcased custom Tn5 flexibility for various sequencing applications, including single-cell assays and bisulfite sequencing.

Conclusions:

• Custom Tn5 production and optimized tagmentation offer a cost-effective and versatile alternative for DNA sequencing library preparation.
• This methodology facilitates the development of novel sequencing applications and large-scale genomics projects.
• The ability to anneal custom oligonucleotides to naked Tn5 opens new avenues for molecular barcoding and epigenetic studies.