Oligo dT(25) Affinity Chromatography Resin

Biovanix Oligo dT(25) Affinity Resin is a cutting-edge solution designed for the purification and isolation of mRNA from in vitro transcription (IVT) manufacturing processes. This advanced resin selectively captures mRNA via its polyadenylated (polyA) tail, effectively separating it from other components of the transcription reaction, such as enzymes and plasmid DNA.

Perfectly suited for large-scale downstream purification, Biovanix Oligo dT(25) Affinity Resin is a key enabler for vaccine and gene therapy applications, offering unmatched selectivity and capacity to meet the demands of modern biopharmaceutical manufacturing.

50 μm

Particle Size

200 nm

Pore Size

pH 2–13

Stability Range

Max Pressure

Stability Range

Product Features

Engineered for High-Performance mRNA Purification

Biovanix Oligo dT(25) Affinity Resin combines selective polyA capture with a rigid PS-DVB matrix for reliable results at any scale.

1. Selective mRNA Capture

✔ PolyA Tail Specificity: Targets mRNA with high selectivity, ensuring effective removal of plasmid DNA and other IVT components.

✔Simple Salt and Water Elution: Streamlined purification process with minimal complexity.

2. Scalable Solution

✔ Excellent Scalability: Designed for seamless transition from lab-scale to large-scale production.

✔ High Capacity: Meets the demands of high-yield mRNA manufacturing.

3. Non-Animal Derived

✔ Synthetic Manufacturing Process: Biovanix oligo ligands are free of animal components, ensuring compliance with regulatory requirements and ethical standards.

4. Simplified Workflow

✔ Reduced Complexity: Eliminates the need for multiple purification steps, maximizing efficiency and reducing downstream processing complexity.

✔ Consistent Performance: Reliable results across different scales and production batches.

How It Works

Simple 4-Step mRNA Purification Workflow

From crude IVT mixture to purified mRNA in a single affinity capture step — no complex multi-step protocols required.

①

Equilibrate

Prepare column with high-salt binding buffer (e.g., 0.5 M NaCl)

②

Load & Bind

Apply IVT mixture; polyA-tailed mRNA binds to poly(dT) ligands

③

Wash

Remove impurities (enzymes, pDNA, nucleotides) in flow-through

④

Elute

Release purified mRNA with water or low-salt buffer

Technical Specifications

Product Specifications

Comprehensive technical data for method development and process validation.

Characteristic	Description
Support Matrix	Cross-linked poly(styrene-divinylbenzene)
Average Particle Size	50 um
Average Pore Size	200 nm
Surface Functionality	poly(dT) 25mer with proprietary linker
Ligand Density	0.3 umol/ml
Mechanical Resistance	70 bar (1,000 psi; 7 MPa)
Thermal Stability	allows sample denaturing at 65°C if needed
pH Range	2-13
Ionic Strength Range	0 to 5 M, all common salts
Chemical Resistance	Common agents for mRNA purification, include 0.5 M NaOH, 2 M MgCl2, 20 mM EDTA. Water, 0 to 100% alcohol, acetonitrile, 2 M acetic acid, 1 M HCl, and other common organic solvents
Storage	18-20% ethanol

Chemical & Thermal Resistance

pH Range	2–13
Ionic Strength Range	0 to 5 M, all common salts
Buffer Additives	Common agents for mRNA purification, include 0.5 M NaOH, 2 MMgCl2, 20 mM EDTA. Do not expose to strong oxidizers (such as hypochlorite), oxidizing acids (such as nitric), strong reducing agents (such as sulfite), acetone, THF, or benzyl alcohol.
Solvents	Water, 0 to 100% alcohol, acetonitrile, 2 M acetic acid, 1 M HCl, and other common organic solvents. Do not expose to strong oxidizers (such as hypochlorite), oxidizing acids (such as nitric), strong reducing agents (such as sulfite), acetone, benzyl alcohol, or THF.
Flow rate	Adjust flow rate depending on performance. Do not exceed upper-pressure limitations.

Benefits at a Glance

Why Biovanix Oligo dT(25) Resin

Designed to maximize purity, simplify workflows, and reduce total cost of ownership.

⚡

High Efficiency

Rapid and efficient mRNA purification.

📈

Scalable Process

Easily adaptable to large-scale manufacturing.

🛡️

Regulatory Compliance

Non-animal derived and synthetic manufacturing process.

💰

Cost-Effective

Simplified workflow reduces operational complexity and costs.

Applications

Built for the mRNA Revolution

From vaccine development to gene therapy manufacturing, Biovanix Oligo dT(25) Resin supports the full spectrum of mRNA applications.

Vaccine Production

Efficient purification of mRNA vaccines.

Gene Therapy

Scalable production of mRNA for therapeutic applications.

IVT Manufacturing

Streamlined isolation of mRNA from transcription reaction mixtures.

Plasmid DNA Removal

Effective elimination of plasmid DNA and other IVT components.

Why Choose Biovanix

Your Trusted Partner in mRNA Purification

① Efficient mRNA Purification

Achieve high-purity mRNA with minimal impurities.

② Cost-Effective

Reduced operational complexity and increased productivity lower overall production costs.

③ Regulatory Compliance

Non-animal derived and synthetic manufacturing ensure compliance with global standards.

④ Versatile Application

Ideal for a wide range of mRNA constructs used in vaccines, gene therapies, and other biopharmaceuticals.

Frequently Asked Questions

Oligo dT(25) Resin FAQ

Common questions about mRNA purification with Oligo dT(25) affinity chromatography.

What is Oligo dT(25) affinity chromatography resin and how does it work?

Oligo dT(25) affinity chromatography resin is a specialized chromatography medium functionalized with poly(deoxythymidine) 25-mer ligands attached to a solid support matrix. It works through complementary A-T base pairing: the poly(dT) ligands on the resin selectively bind to the polyadenylated (polyA) tail of mRNA molecules. When an IVT (in vitro transcription) mixture is loaded onto the column under high-salt conditions, mRNA is captured while impurities such as enzymes, plasmid DNA, and unincorporated nucleotides pass through. Elution is achieved with water or low-salt buffer, releasing the purified mRNA.

What is the principle behind mRNA purification using oligo dT affinity chromatography?

The purification principle relies on specific Watson-Crick A-T base pairing between the poly(dT) 25-mer ligand immobilized on the resin and the polyA tail present on mature mRNA. Under high ionic strength conditions (typically 0.5 M NaCl), electrostatic shielding stabilizes the hybridization between poly(dT) and polyA. The mRNA binds selectively to the resin while process impurities flow through. Elution is performed under low-ionic-strength conditions (water or dilute buffer), which destabilizes the hybrid and releases purified mRNA in a single chromatographic step.

What types of mRNA can be purified with Oligo dT(25) resin?

Oligo dT(25) resin can purify any polyadenylated mRNA produced through in vitro transcription (IVT), including mRNA constructs for vaccines (such as infectious disease vaccines), gene therapy mRNAs (such as those encoding therapeutic proteins or gene editing components), and research-grade mRNAs of various lengths. The resin is compatible with mRNA constructs ranging from short transcripts to several thousand nucleotides in length, as long as they contain a polyA tail.

What is the binding capacity of Oligo dT(25) resin?

The binding capacity of Oligo dT(25) resin depends on the mRNA construct length, loading conditions, and the specific product formulation. Generally, affinity resins with poly(dT) ligands offer high dynamic binding capacity suitable for preparative-scale mRNA purification. Smaller mRNA constructs tend to achieve higher binding capacity per mL of resin due to reduced steric hindrance. For specific capacity data for your mRNA construct, contact the Biovanix technical team for application-specific recommendations.

What are the advantages of PS-DVB matrix vs. agarose for mRNA purification?

Poly(styrene-divinylbenzene) (PS-DVB) matrices offer several advantages over traditional agarose gels for mRNA purification: (1) Higher mechanical strength — PS-DVB beads are rigid, enabling higher flow rates and pressure tolerance (up to 70 bar for Biovanix resin) without bed compression; (2) Broader chemical compatibility — stable across pH 2–13 and resistant to organic solvents, enabling aggressive cleaning-in-place (CIP) with NaOH; (3) Longer resin lifetime — the rigid polymer backbone does not compress or degrade over repeated cycles; (4) Better scalability — linear pressure-flow behavior allows consistent performance from lab to production scale; (5) No risk of gel compression artifacts during scale-up.

How do I pack and use Oligo dT(25) resin in my chromatography system?

General workflow: (1) Equilibrate the column with binding buffer (high-salt buffer, e.g., 0.5 M NaCl) to prepare the resin for mRNA capture; (2) Load the IVT reaction mixture onto the column — the mRNA polyA tail binds to the poly(dT) ligands while impurities flow through; (3) Wash the column with binding buffer or a moderate-salt wash buffer to remove residual impurities; (4) Elute purified mRNA with water or low-salt buffer (e.g., 10 mM Tris-HCl); (5) Clean and regenerate the column with appropriate CIP solution (e.g., 0.1–0.5 M NaOH) for reuse. Always adjust flow rate to stay within the pressure limit (70 bar maximum for Biovanix resin). For denaturing secondary structures, samples can be heated to 65°C during processing.

What flow rate and pressure should I use with Oligo dT(25) resin?

Biovanix Oligo dT(25) resin has a maximum mechanical resistance of 70 bar (1,000 psi / 7 MPa). The flow rate should be adjusted based on your specific application and column dimensions, ensuring that backpressure does not exceed this limit. The 50 μm average particle size allows efficient mass transfer at moderate to high linear flow rates. Start at a conservative flow rate during method development and optimize based on binding efficiency and recovery. The rigid PS-DVB matrix maintains stable bed volume across flow rate changes, providing consistent performance.

Can I reuse the Oligo dT(25) resin and how do I clean it?

Yes, Oligo dT(25) resin can be reused for multiple purification cycles with proper cleaning and storage. Cleaning-in-place (CIP) is typically performed using 0.1–0.5 M NaOH, which effectively removes residual nucleic acids and contaminants. The resin’s broad pH stability (2–13) and chemical resistance support stringent cleaning protocols. After CIP, re-equilibrate the column with binding buffer before the next use. Store the resin in 18–20% ethanol at 2–8°C when not in use. Do not freeze. Resin lifetime depends on the application, cleaning protocol, and feed material quality.

What buffer conditions are recommended for mRNA binding and elution?

For mRNA binding (capture): use a high-salt buffer such as 0.5 M NaCl with an appropriate buffer component (e.g., 10 mM Tris-HCl, pH 7.5). The high ionic strength provides electrostatic shielding that stabilizes the A-T hybridization between poly(dT) ligands and the mRNA polyA tail. For washing: use the same high-salt binding buffer or a moderately reduced salt concentration. For elution: use deionized water or a low-salt buffer (e.g., 10 mM Tris-HCl without NaCl) to destabilize the hybrid and release purified mRNA. The resin also allows sample denaturing at 65°C if needed to eliminate undesired higher-order RNA structures.

How does Oligo dT(25) resin remove plasmid DNA and other IVT impurities?

The selectivity of Oligo dT(25) resin is based on the specific A-T base pairing between the poly(dT) ligands and the polyA tail of mRNA. Only polyadenylated mRNA molecules bind to the resin. Plasmid DNA (which lacks a polyA tail), RNA polymerase enzymes, unincorporated nucleotides, short abortive transcripts, and buffer components do not bind and are removed in the flow-through and wash fractions. This single-step affinity capture effectively separates full-length mRNA from the major IVT process impurities, significantly reducing downstream processing complexity.

Can Oligo dT(25) resin be used for continuous or automated mRNA purification?

Yes, Oligo dT(25) resin is compatible with standard chromatography systems and can be adapted for automated and continuous processing workflows. The rigid PS-DVB matrix provides consistent pressure-flow behavior, making it suitable for use on automated chromatography platforms. The simple salt-and-water elution workflow minimizes buffer exchange requirements. For process development and screening, smaller column formats can be used to optimize conditions before scaling to larger automated systems. The linear scalability of the PS-DVB matrix ensures that conditions optimized at small scale translate directly to production scale.

What is the shelf life and storage condition for Oligo dT(25) resin?

Biovanix Oligo dT(25) resin should be stored in 18–20% ethanol solution. The recommended storage temperature is 2–8°C (refrigerated). Do not freeze the resin, as freezing may damage the bead structure. When properly stored, the resin maintains its performance characteristics over extended periods. Before use, ensure the resin is at room temperature and thoroughly equilibrated with binding buffer. Refer to the product certificate of analysis for specific shelf-life information for your lot.

Customer Testimonial

Trusted by Biopharma Professionals

“Biovanix InertShell Chromatography Resin has transformed our virus purification process. The dual functionality and high selectivity have significantly improved our yields and purity levels, making it an essential tool in our testings.”
– Alex, Developer, AA Biopharma

Complete Chromatography Solutions from Biovanix

Pair Oligo dT(25) Resin with our full range of chromatography hardware, media, and systems.

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