Landing Pad Gene Integration for Faster Producer Cell Selection

Solution Overview

Problem

The generation of stable producer cell lines for therapeutic proteins is time-consuming and expensive due to the need for extensive screening of clones, which complicates the production of complex post-translational modifications required for therapeutic proteins like monoclonal antibodies and recombinant proteins.

Innovation Solution

A system comprising a landing pad nucleic acid with specific recombination sites and split intein-selectable markers, a delivery nucleic acid with linked promoters and split markers, and an integrating enzyme for site-specific recombination, allowing efficient integration and expression of genes of interest, reducing the number of clones needed for screening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional methods are used to generate stable producer cell lines, then the process ensures proper post-translational modifications through mammalian cell screening, but the process becomes time-consuming and expensive due to extensive clone screening

Engineering Contradiction:

Improveproper post-translational modificationsVSAvoidtime for generating stable producer cell lines

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The landing pad is pre-integrated into the genome before the gene of interest is introduced. This preliminary setup includes all necessary recombination sites and regulatory elements, so that when the gene is delivered via the delivery nucleic acid, it automatically integrates into the correct location with proper orientation and regulatory control, eliminating the need for extensive clone screening

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The integrating enzyme acts as an intermediary that facilitates site-specific recombination between the delivery nucleic acid and the landing pad. This mediator ensures precise integration of the gene of interest into the predetermined genomic location, guaranteeing proper expression and post-translational modifications without random integration variability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If traditional methods are used to generate stable producer cell lines, then the process ensures proper post-translational modifications, but the process becomes expensive due to extensive clone screening

Engineering Contradiction:

Improveproper post-translational modificationsVSAvoidcost of generating stable producer cell lines

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The landing pad is pre-integrated into the genome before the gene of interest is introduced. This preliminary setup includes all necessary recombination sites and regulatory elements, so that when the gene is delivered via the delivery nucleic acid, it automatically integrates into the correct location with proper orientation and regulatory control, eliminating the need for extensive clone screening

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The integrating enzyme acts as an intermediary that facilitates site-specific recombination between the delivery nucleic acid and the landing pad. This mediator ensures precise integration of the gene of interest into the predetermined genomic location, guaranteeing proper expression and post-translational modifications without random integration variability

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If site-specific recombination is used for gene integration, then the number of clones needing screening is reduced, but the system requires complex components including landing pad, delivery nucleic acid, and integrating enzyme

Engineering Contradiction:

Improvespeed of generating stable producer cell linesVSAvoidcomplexity of integration system

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system is divided into distinct functional modules: the landing pad nucleic acid containing recombination sites and regulatory elements, the delivery nucleic acid carrying the gene of interest, and the integrating enzyme. This segmentation allows each component to be optimized independently and simplifies the overall process control

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The landing pad design is universal and can accommodate different genes of interest through the same recombination mechanism. The integrating enzyme can facilitate integration of various delivery nucleic acids, making the system broadly applicable to different therapeutic protein productions without requiring system redesign

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This system significantly reduces the time and cost associated with generating stable producer cell lines by ensuring precise integration and expression of therapeutic proteins, thereby streamlining the production process.

Implementation Method 1

an integrating enzyme, or a nucleic acid encoding an integrating enzyme, wherein the integrating enzyme is configured to catalyse site specific recombination between the first site-specific recombination site and the second site-specific recombination site

Methodology Applied

Scientific EffectSite-specific recombination: Enzyme

Implementation Method 2

a first split intein and split selectable marker combination; a second split intein and split selectable marker combination

Methodology Applied

Scientific EffectProtein splicing: Enzyme

Data Source

PatentUS20260092272A1Integration and Selection System

Publication Date: 2026.04.02 ANTIBODY ANALYTICS LTD

AI summary

The present invention relates to a system comprising a landing pad, a delivery nucleic acid and an integrating enzyme allowing selection of a specific gene of interest. The invention further relates to cells comprising the system, a method for providing a gene of interest and selecting a cell with a gene of interest, a landing pad nucleic acid, a delivery nucleic acid and a kit for providing and selecting a cell with a gene of interest.