Synthesis of large single- transcript pathways from oligonucleotide pools: Design of STARBURST, an autobioluminescent reporter

• 成果类型: Article
• 署名作者: Dvir, Gony; Xing, Zenan; Beldman, Irina; Rivera, Andres; Wheeldon, Ian; Cutler, Sean R.
• 署名单位: University of California System; University of California Riverside; University of California System; University of California Riverside; University of California System; University of California Riverside; Universidad Nacional Autonoma de Mexico; University of California System; University of California Riverside; University of California System; University of California Riverside
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-14749
• DOI: 10.1073/pnas.2508109122
• 发表日期: 2025-08-05
• 关键词: codon usage; dna; arabidopsis; TRANSFORMATION; expression

摘要

Methods for fast and inexpensive gene synthesis from oligonucleotide pools enable rapid iteration of genetic designs. Here, we describe iggypop (indexed Golden Gate gene assembly from PCR- amplified oligonucleotide pools), a simple computational-experimental pipeline that allows for low- cost design and synthesis of hundreds of genes from oligonucleotide pools using Golden Gate assembly methods. We used iggypop to synthesize a series of single- transcript autonomously bioluminescent reporters (STARBURSTs) that link the five genes of a fungal bioluminescence pathway via ribosomal skipping LP4/2A sequences into a 9.5 kb transcript that function in planta. We also synthesized RUBY reporters (a reporter gene system producing red betalain pigment) recoded to match dicot codon usage, as RUBY was codon optimized for rice codon usage and has a high GC content. Surprisingly, the recoded RUBYs substantially reduced betalain production in transient Nicotiana benthamiana assays. Based on this observation, we synthesized six GC- boosted STARBURSTs, which produced robust luminescence in both transient assays and transgenic Arabidopsis plants. Thus, iggypop enabled the rapid synthesis of multiple genetic designs to deliver a bright single transcript autobioluminescent reporter. Iggypop should enable the facile synthesis and optimization of new genetic parts and complex polycistronic pathways.