Multi-gene Precision Editing Tool Using CRISPR-Cas12a/Cpf1 System in Ogataea Polymorpha

Overview

Journal Microb Cell Fact

Publisher Biomed Central

Date 2025 Jan 21

PMID 39838422

Authors

Senqin Hou

Shibin Yang

Wenqin Bai

Affiliations

Soon will be listed here.

Abstract

Background: Ogataea polymorpha, a non-conventional methylotrophic yeast, has demonstrated significant potential for heterologous protein expression and the production of high-value chemicals and biopharmaceuticals. However, the lack of precise and efficient genome editing tools severely hinders the construction of cell factories. Although the CARISP-Cas9 system has been established in Ogataea polymorpha, the gene editing efficiency, especially for multiple genes edition, needs to be further improved.

Results: In this study, we developed an efficient CRISPR-Cpf1-mediated genome editing system in O. polymorpha that exhibited high editing efficiency for single gene (98.1 ± 1.7%), duplex genes (93.9 ± 2.4%), and triplex genes (94.0 ± 6.0%). Additionally, by knocking out non-homologous end joining (NHEJ) related genes, homologous recombination (HR) efficiency was increased from less than 30% to 90 ~ 100%, significantly enhancing precise genome editing capabilities. The increased HR rates enabled over 90% integration efficiency of triplex genes, as well as over 90% deletion rates of large DNA fragments up to 20 kb. Furthermore, using this developed CRISPR-Cpf1 system, triple genes were precisely integrated into the genome by one-step, enabling lycopene production in O. polymorpha.

Conclusions: This novel multiplexed genome-editing tool mediated by CRISPR-Cpf1 can realize the deletion and integration of multiple genes, which holds great promise for accelerating engineering efforts on this non-conventional methylotrophic yeast for metabolic engineering and genomic evolution towards its application as an industrial cell factory.

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