In the rapidly evolving landscape of synthetic glycobiology, the selection and engineering of a biological "chassis" are the foundational steps that determine the success of high-value glycan production. However, the complexity of host genomes and the potential for unintended genetic alterations during engineering necessitate rigorous validation. CD BioGlyco offers a next-generation sequencing (NGS)-based chassis validation service designed to provide researchers with high-resolution insights into the genetic and transcriptomic integrity of their engineered strains.
As a subset of our chassis strain validation service, this platform leverages the power of high-throughput sequencing to confirm that every genetic modification is precise, every synthetic circuit is stable, and the cellular machinery is functioning as designed. Whether you are working with bacterial, fungal, or mammalian chassis, our NGS-based approach replaces traditional, low-resolution methods with a data-rich profile that ensures your project moves from the laboratory to industrial scale with absolute confidence.
This technology provides an exhaustive map of the entire genome. We utilize WGS to identify single-nucleotide polymorphisms (SNPs), insertions/deletions (indels), and structural variations that may have occurred during the engineering of the glyco-pathway.
While DNA tells us what is possible, RNA tells us what is happening. RNA-Seq allows us to quantify gene expression levels across the entire transcriptome, ensuring that synthetic glyco-genes are being transcribed at the target levels without disrupting the host's metabolic homeostasis.
For projects focusing on specific genomic loci, such as a newly integrated multi-gene glycosylation cluster, targeted sequencing provides ultra-high depth coverage. This ensures the detection of even low-frequency sub-clonal mutations that could compromise long-term strain stability.
Validating the Blueprint of Bio-manufactured Excellence: NGS
At CD BioGlyco, our NGS-based validation services represent the standard for verifying the "fitness" of an engineered chassis. Within the framework of chassis development, and specifically under chassis strain validation, we provide a multi-layered analytical suite that addresses the most critical questions in synthetic biology.
Our scope extends beyond simple sequence verification. We provide a deep dive into the genomic landscape of your chassis using advanced bioinformatics pipelines. This includes:
WGS-based Chassis Validation Service
WGS-based chassis validation service is essential for identifying off-target effects of gene-editing tools.
RNA-Seq-based Chassis Validation Service
We monitor the metabolic "load" that synthetic pathways place on the host cell, allowing for the optimization of promoter strengths and resource allocation.
Targeted Sequencing-based Chassis Validation Service
Our targeted sequencing provides the precision needed to verify the stability of complex, large-scale genetic integrations.
We support a diverse array of host organisms, including Escherichia coli, Saccharomyces cerevisiae, Pichia pastoris, and mammalian systems like Chinese hamster ovary (CHO) cells. By implementing these services, CD BioGlyco helps clients identify potential bottlenecks, such as unexpected gene silencing or metabolic stress responses, early in the development cycle, saving significant time and resources during scale-up.
Workflow
Project Consultation and Experimental Design
We begin with a detailed discussion of your chassis's genetic background and the specific modifications made. Our experts help you select the most appropriate sequencing strategy (WGS, RNA-Seq, or targeted) based on your project goals and budget.
Sample Preparation and Quality Control (QC)
Clients provide either cell pellets or purified nucleic acids. We perform rigorous QC using fluorometric quantification and fragment analysis to ensure that only high-quality DNA or RNA proceeds to library preparation.
High-Fidelity Library Construction
Using state-of-the-art kits, we prepare sequencing libraries tailored to the specific NGS platform. This includes fragmentation, adapter ligation, and polymerase chain reaction (PCR) amplification, with options for strand-specific RNA-Seq to preserve transcript orientation.
High-Throughput Sequencing
Libraries are sequenced on industry-leading platforms for long-read requirements. We ensure sufficient depth of coverage to meet the statistical requirements for variant calling or differential gene expression analysis.
Advanced Bioinformatics Analysis
Raw data is processed through our proprietary pipelines. This involves read mapping to a reference genome, variant calling, de novo assembly (if the reference is unavailable), and transcriptomic quantification.
Validation Reporting
We deliver a detailed report that interprets the data in the context of your chassis' performance. This includes clear visualizations (e.g., Volcano plots for RNA-Seq, Circos plots for WGS) and a final validation statement on the strain's genetic integrity.
Publication Data
DoI: 10.1016/j.cpb.2024.100412
Journal: Current Plant Biology
IF: 4.5
Published: 2024
Results: This review highlights the transformative role of NGS in advancing plant breeding via molecular marker development, addressing global food security challenges. It details key NGS technologies that overcome limitations of traditional methods like Sanger sequencing. These technologies enable efficient detection of molecular markers (SNPs, SSRs, InDels, SVs) critical for trait selection. The review covers marker discovery via RNA-seq, GBS, RAD-seq, and WGS, with applications in genome-wide association studies (GWAS), quantitative trait loci (QTL) mapping, and genetic diversity analysis across crop species. It also discusses the integration of artificial intelligence (AI)/machine leaning (ML) for data processing and genomic prediction, enhancing marker identification accuracy. Despite challenges like data complexity and technology costs, NGS-driven marker-assisted selection accelerates development of stress-tolerant, high-yield crops. Future advancements in sequencing and multi-omics integration are expected to further revolutionize plant genetics and breeding for sustainability.
Fig.1 Advancements of next generation sequencing platforms. (Panahi, et al., 2024)
Applications
Biopharmaceutical Production
Validation of CHO or yeast chassis engineered for the production of therapeutic glycoproteins, ensuring consistent N-glycosylation patterns and genetic stability over hundreds of generations in a bioreactor.
Industrial Enzyme Engineering
Monitoring the transcriptomic profile of fungal chassis optimized for high-yield secretion of glycosyltransferases or hydrolases, identifying and mitigating cellular stress responses that limit productivity.
Metabolic Pathway Optimization
Using RNA-Seq to fine-tune the expression of multi-step biosynthetic pathways for rare sugars or human milk oligosaccharides (HMOs), ensuring balanced flux through engineered metabolic nodes.
Strain Stability Testing
Assessing the genomic drift of production strains during long-term continuous fermentation, identifying the accumulation of mutations that could lead to reduced product titers or altered glycan structures.
Advantages
Integrated Glyco-expertise
Unlike general sequencing providers, we understand the specific nuances of glycobiology, allowing us to interpret genomic data through the lens of carbohydrate metabolism and protein glycosylation.
High-Resolution Detection
Our NGS pipelines are optimized to detect low-frequency genetic variants and subtle transcriptomic shifts that traditional sequencing or qPCR would likely miss.
End-to-End Solutions
From initial strain engineering and gene editing to final NGS-based validation and fermentation optimization, we provide a complete "one-stop" service for chassis development.
Tailored Bioinformatics
Our bioinformaticians customize analysis pipelines for each project, providing deep insights into metabolic pathway bottlenecks and off-target editing events unique to your specific host organism.
Frequently Asked Questions
Customer Review
"The RNA-Seq analysis provided by CD BioGlyco was a game-changer for our yeast engineering project. We were seeing lower-than-expected titers, and their transcriptomic profile revealed a significant bottleneck in precursor supply that we hadn't considered. The data was incredibly clear."
– L.C., Principal Investigator
"We used the WGS-based validation service to confirm a multi-gene integration in a bacterial host. CD BioGlyco's team identified a small deletion at the integration site that Sanger sequencing missed. Their attention to detail saved us months of troubleshooting."
– T.R., Director of R&D
"Reliable, fast, and scientifically rigorous. The bioinformatic report for our targeted sequencing project was exceptionally detailed. It's rare to find a sequencing provider that actually understands the complexities of glycosylation pathways."
CD BioGlyco's NGS-based chassis validation service provides the ultimate assurance for synthetic biology projects. By combining cutting-edge sequencing technologies with deep expertise in glycobiology, we transform raw genomic data into the strategic insights necessary for successful bio-manufacturing. Please feel free to contact us to help you design the perfect validation strategy.
Reference
Panahi, B.; et al. Using next-generation sequencing approach for discovery and characterization of plant molecular markers. Current Plant Biology. 2024, 40: 100412. (Open Access)
For research use only. Not intended for any clinical use.
Fig.1 Advancements of next generation sequencing platforms. (Panahi, et al., 2024)
