RNA Chemical Modification Services
Overview
RNA-based therapeutics demand precise chemical modifications to achieve optimal pharmacokinetics, reduced innate immune activation, and enhanced protein expression. Our comprehensive RNA chemical modification services provide end-to-end support from design to analytical characterization.
Chemical modifications of RNA are critical for therapeutic success. Modifications such as pseudouridine, 5-methylcytidine, and N1-methylpseudouridine have been shown to improve RNA stability and reduce immunogenicity, enabling durable expression in vivo. We leverage advanced synthesis platforms to incorporate these and other modifications into custom RNA sequences.
Our services are designed for mRNA therapeutic developers, cancer immunotherapy researchers, and gene editing teams seeking to optimize RNA payloads. We offer a range of modification patterns, including site-specific incorporation, complete replacement of natural nucleotides, and combination modifications to balance stability, translation, and immune evasion.
From small-scale research constructs to GMP-grade material for IND-enabling studies, our integrated approach combines RNA synthesis, modification incorporation, and comprehensive analytical characterization using HPLC, LC-MS, ELISA, and capillary electrophoresis to ensure product quality and consistency.
Key Capabilities
Custom RNA Synthesis with Controlled Modifications
Synthesis of RNA oligonucleotides with precise incorporation of natural and modified nucleotides, including pseudouridine, 5-methylcytidine, 2'-O-methyl, and locked nucleic acids (LNA).
Comprehensive Analytical Characterization
Analytical services including HPLC, LC-MS, ELISA, and capillary electrophoresis for purity, identity, integrity, and modification content determination.
Modification Design & Optimization
Expert guidance on modification patterns to achieve desired stability, translation efficiency, and immune evasion, tailored to specific therapeutic applications.
Scalable Production from Research to GMP
Synthesis and purification capabilities that support scales from milligram to gram, with GMP manufacturing available for clinical-stage materials.
Integrated Bioanalytical Support
Downstream services including in vitro translation assays, cell-based activity testing, and immunogenicity profiling to evaluate modified RNA performance.
RNA Modification Types We Support
We offer a broad portfolio of chemical modifications to address diverse therapeutic needs. Below are commonly requested modifications, each with distinct advantages.
- Pseudouridine (Ψ): Replacement of uridine with pseudouridine reduces innate immune receptor activation and enhances RNA stability and translation efficiency.
- N1-Methylpseudouridine (m1Ψ): A modification further optimized to minimize immunogenicity while maintaining high translational activity, widely used in mRNA vaccines.
- 5-Methylcytidine (m5C): Incorporation of 5-methylcytidine improves RNA stability and reduces recognition by pattern recognition receptors.
- 2'-O-Methyl (2'-OMe): A backbone modification that increases nuclease resistance and reduces immune stimulation, often used in antisense and siRNA.
- Locked Nucleic Acid (LNA): Bicyclic RNA analogues with enhanced binding affinity and nuclease resistance, valuable for probe and therapeutic design.
Our Workflow
A structured, collaborative process from design to delivery, ensuring quality and accountability at every step.
- Consultation & Design: Discuss your therapeutic goals, desired modifications, and sequence requirements. Our scientists provide recommendations on modification patterns and synthesis strategy.
- Synthesis & Modification Incorporation: Solid-phase or enzymatic synthesis of RNA with precise incorporation of modified nucleotides. Quality checks during synthesis ensure high fidelity.
- Purification & Quality Control: Purification using HPLC or PAGE, followed by analytical characterization via LC-MS, CE, and ELISA to confirm identity, purity, and modification content.
- Documentation & Delivery: Comprehensive data package including analytical reports, certificates of analysis, and stability data. Delivered in your preferred format (lyophilized, solution, etc.).
Customized to Your Project
Each project is tailored to the specific modification pattern, sequence length, and scale required. We work closely with your team to define specifications and acceptance criteria before synthesis begins.
Project Milestones
Typical milestones for a custom RNA modification project, from initial consultation to final delivery. Actual timelines are discussed during project scoping.
- Design Review: Sequence and modification pattern finalized, synthesis strategy confirmed.
- Synthesis Initiation: RNA synthesis begins with established protocols for modified nucleotide incorporation.
- Purification: Crude RNA purified to target purity level using optimized methods.
- Quality Control: Full analytical characterization completed and reviewed against specifications.
- Release & Shipping: Final product with documentation packaged and shipped under appropriate conditions.
Timelines are project-dependent and confirmed during the design phase.
Quality Assurance
Our RNA chemical modification services operate under strict quality management systems to ensure reproducibility and regulatory compliance. Each batch is subjected to a comprehensive analytical panel including HPLC for purity, LC-MS for molecular weight confirmation and modification content, capillary electrophoresis for integrity, and ELISA for endotoxin and residual impurity testing.
We provide a full certificate of analysis with each delivery, documenting all quality parameters. For GMP-grade material, we follow ICH guidelines and provide batch records and stability data as required for IND submissions.
Our analytical methods are validated and routinely monitored to ensure consistent performance. We also offer custom assay development for specific quality attributes relevant to your therapeutic candidate.
Why Partner with Us
- Integrated RNA Expertise: From synthesis to bioanalysis, we offer a single-source solution for RNA modification projects, reducing handoffs and accelerating timelines.
- Flexible Scale & Support: Services available from research-scale to GMP-compatible production, with experienced project management to guide you through each stage.
- Comprehensive Quality Control: In-house analytical capabilities ensure that every product meets rigorous quality standards before release.
- Regulatory Experience: Our team understands the regulatory landscape for RNA therapeutics and can support documentation for IND-enabling studies.
- Confidentiality & IP Protection: All projects are handled under strict confidentiality agreements to protect your intellectual property.
Common Cell Types for RNA Transfection Studies
We provide RNA modification services independent of cell type; however, the following cell lines are frequently used in downstream transfection and activity assays.
- HEK293: A widely used human embryonic kidney cell line for transient expression and protein production studies.
- HeLa: Cervical cancer cell line often employed in RNA stability and translation efficiency assays.
- Primary T Cells: Relevant for immunotherapy applications, where RNA modifications can improve CAR-T or TCR expression.
- Dendritic Cells: Used in mRNA vaccine studies to evaluate antigen presentation and immune activation.
- HepG2: Hepatocellular carcinoma cell line suitable for liver-targeted RNA therapeutic testing.
Contact Us
Whether you are evaluating backbone, sugar, or base modifications for stability and potency, or need guidance on the optimal modification pattern for your therapeutic RNA, our RNA chemistry experts are here to help. Contact us today to discuss your project requirements.