Synthetic Operon Architecture for Cross-Species Gene Cluster Expression

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Solution Overview

Problem

Existing genetic programming methods struggle to effectively control and transfer complex gene clusters across different cellular species due to the reliance on distinct sensors, circuits, and actuators encoded by native regulatory elements, limiting the functionality and compatibility of gene expression.

Innovation Solution

The development of synthetic operons with heterologous transcriptional regulatory sequences and ribosome binding sites, allowing for the reorganization and control of coding sequences to mimic native expression ratios, enabling expression in heterologous cells.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If native regulatory elements are used to control gene clusters, then the gene expression maintains natural regulation, but the compatibility and transferability across different cellular species is limited

Engineering Contradiction:

Improvecompatibility across speciesVSAvoidregulatory element complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts the coding sequences from their native regulatory context by removing native promoters and ribosome binding sites. The coding sequences are then placed under the control of heterologous regulatory elements that are compatible with the target host species, enabling cross-species gene expression while maintaining simplicity in the regulatory architecture.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces heterologous promoters and ribosome binding sites as intermediary elements between the donor gene sequences and the recipient cellular machinery. These intermediary regulatory elements serve as adapters that enable the translation of genetic information across species boundaries without requiring complex native regulatory compatibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If coding sequences are reorganized into synthetic operons, then the control and transfer of gene clusters is improved, but the fidelity of native expression ratios may be compromised

Engineering Contradiction:

Improvegene expression control efficiencyVSAvoidexpression ratio fidelity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by assigning specific ribosome binding sites with different strengths to different coding sequences within the synthetic operon. Each RBS is optimized to produce the desired relative expression level for its associated gene, allowing precise control of expression ratios while maintaining the benefits of synthetic operon structure and heterologous promoter control.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If heterologous ribosome binding sites are used to regulate translation, then the expression can be controlled in heterologous cells, but the translation regulation may deviate from native patterns

Engineering Contradiction:

Improveexpression in heterologous cellsVSAvoidtranslation regulation accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent changes the parameters of ribosome binding sites by selecting and engineering RBS sequences with specific strength characteristics. By adjusting RBS strength parameters, the patent optimizes translation initiation rates to achieve desired expression levels and ratios in heterologous hosts, while maintaining reliable and reproducible translation control through standardized RBS design principles.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260015620A1Synthetic gene clusters

Publication Date: 2026.01.15 RGT UNIV OF CALIFORNIA

AI summary

Methods for making synthetic gene clusters are described.