Pin-point Base Editing Platform for Single-Base Genome Editing in Vegetable Crops

Overview

This offering combines a proprietary aptamer-mediated CRISPR base editing platform, known as Pin-point Base Editing, with deep expertise in plant gene editing to deliver precise single-base modifications in vegetable crops. Unlike conventional CRISPR-Cas9 approaches that rely on double-strand DNA breaks, this technology introduces targeted nucleotide changes directly, reducing the risk of unwanted genomic rearrangements and off-target mutations. The platform is designed for crop trait improvement applications where specific point mutations can deliver desired agronomic outcomes such as disease resistance, improved nutritional profile, or enhanced shelf life.

The technology has demonstrated over 90% base editing efficiency at target sites in mammalian cells, with multiplex editing at four simultaneous sites each exceeding 80% efficacy. In plants, the aptamer-mediated approach has shown superior performance compared to direct-fusion base editing platforms. The platform's therapeutic counterpart has been licensed to a major life sciences company and sublicensed for cell therapy applications, underscoring its commercial validation.

Technical specifications

Key features:

• Aptamer-mediated CRISPR base editing architecture enabling precise single-nucleotide conversions
• Over 90% on-target editing efficiency with low to undetectable off-target effects
• No double-strand DNA break required, preserving genomic stability
• Multiplex editing capability supporting simultaneous modification of four or more target sites
• Compatible with both monocot and dicot crop species
• Well-established workflow including vector design, protoplast or callus optimization, gene gun transformation, and plantlet regeneration

Validation approach:

• On-target and off-target editing assessed by Sanger sequencing and high-throughput sequencing
• Optimization of gRNA, deaminase effectors, and delivery components in protoplast or callus systems
• Screening of regenerated plants for editing efficacy, off-target effects, and transgene integration
• Expected delivery timeline of two to three years for two vegetable crop targets

Technology readiness level

The Pin-point Base Editing platform has been extensively validated in mammalian systems, achieving over 90% base editing efficiency at target sites and demonstrating robust multiplex editing capabilities. The aptamer-mediated approach has also been validated in plant systems, including rice, where it outperformed direct-fusion base editing platforms. The technology has been licensed for therapeutic applications, providing additional commercial validation of its efficacy and reliability.

For vegetable crop applications, the platform is ready for translational development. The proposed workflow leverages established protocols for vector construction, component optimization in protoplast or callus, and plant regeneration through gene gun transformation. The two-laboratory collaboration combines proprietary base editing technology with specialized crop gene editing expertise, positioning the platform for successful delivery of gene-edited vegetable crops within a two to three year timeframe.