Host Cell Residual DNA Sample Preprocessing Kit (Magnetic Bead Method)

 Product Name: Host Cell Residual DNA Sample Preprocessing Kit (Magnetic Bead Method)

 

The residual DNA of host cell protein elisa in biological products has many risks such as tumorigenicity and infectivity, so the accurate quantitative detection of trace amounts of residual DNA is particularly important. Pretreatment is the process of extracting and purifying trace amounts of DNA in biological products from complex sample matrices. An effective and stable pretreatment method is the basis for ensuring accurate detection of residual DNA detection and other rapid nucleic acid detection methods.

 

BlueKit Host Cell Residual DNA Sample Preprocessing Kit can meet both manualextraction and machine extraction methods. Manual extraction is accurate and sensitive, and it iefficient and convenient to use with a fully automatic nucleic acid extractor.

 

Features of Host Cell Residual DNA Sample Preprocessing Kit (Magnetic Bead Method)

Convenience

Ready-to-use standards

 

Wide Linear range

One-step design

Compliance

Calibrated with international NIBSC/WHO (90/636) standards

Validated kit performance

Proven 10+ IND application experience

 

Stability

 Developed with products pecificity

Short detection time

Error-proofdesign

 

General Workflow

1. Sample Prep: Dilution/pH adjustment (pH 6.0–8.0)

2. Lysis: Proteinase K + 65°C incubation

3. DNA Binding: Magnetic beads + isopropanol

4. Wash/Ethanol Removal

5. Elution: 70°C, high recovery.

 

Service Features

Solution 1: High-Efficiency DNA Capture & Purification

Solution 2: Streamlined Workflow with Rigorous Contamination Control

Solution 3: Flexible Scalability with Robust Performance

Purpose: Ensure sensitive and accurate extraction of trace host cell DNA (e.g., CHO, E. coli, Vero, human, plasmid) from complex biological matrices.

 

Feature:Proprietary magnetic beads with high DNA-binding capacity (>95% recovery) and minimal inhibitor carryover.

 

Integrated glycogen + yeast tRNA binding buffer to enhance DNA yield for low-concentration samples.

 

Application: Compatible with downstream qPCR/ddPCR detection (e.g., Hillgene’s DNA detection kits).

 

Technical Effort:

Validated for diverse samples: upstream intermediates, dry powders (10–100 mg/mL), and neutral-pH-adjusted solutions.

 

Parallel processing (triplicate recommended) ensures reproducibility.

 

Case Studies

Case 1: High-Efficiency DNA Extraction from CHO Cell Lysates

Background

Residual host cell DNA (HCD) in biologics poses risks for immunogenicity and regulatory non-compliance. CHO cells are widely used in bioproduction, but their complex lysates challenge DNA extraction due to high protein/lipid content.

 

Key Challenge

Conventional column-based kits suffer from low recovery (<50%) for trace DNA (<10 pg/μL) in viscous CHO samples, leading to inconsistent qPCR results.

 

Optimization

Hillgene’s magnetic bead-based pretreatment kit leverages:

 

Glycogen/tRNA carrier system to enhance micro-DNA binding.

 

Lysis buffer + Proteinase K for complete chromatin dissociation.

 

Ethanol-free elution to minimize inhibitor carryover for downstream qPCR.

 

Result

 

Recovery rate: 92.5% (spiked DNA: 5–100 pg/μL).

 

Purity: A260/A280 = 1.8±0.1, compatible with CHO-specific qPCR kits.

 

Throughput: 48 samples processed in <1 hour.

 

Case 2: Sensitive Detection in E. coli-Derived Plasmid Samples

Case 3: Cross-Species DNA Extraction for Multi-Matrix Biologics

 

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