Quantitative Detection of Residual DNase I, RNase Inhibitor, and Inorganic Pyrophosphatase in mRNA Production
As mRNA technology revolutionizes the fields of vaccines, gene therapy, and protein replacement therapy, the demand for high-purity, high-integrity mRNA is greater than ever. Ensuring the absence of residual enzymes used during mRNA synthesis is critical to meet regulatory and safety standards. To address this need, Hzymes offers a series of high-performance ELISA kits specifically designed to detect DNase I, RNase Inhibitor (RNI), and Inorganic Pyrophosphatase (PPA1) residues.

Why Residual Enzyme Detection Matters in mRNA Manufacturing

During mRNA synthesis, several enzymes play essential roles:

DNase I is used to degrade unwanted DNA (plasmid or genomic DNA) contaminants. However, if not completely removed, residual DNase I can degrade RNA non-specifically, compromising mRNA integrity.
RNase Inhibitor (RNI) is employed to protect mRNA from degradation by ribonucleases. Residual RNI must be monitored to avoid interference with downstream applications.
Inorganic Pyrophosphatase (PPA1) enhances transcription efficiency by breaking down pyrophosphate (PPi), a byproduct that can inhibit RNA polymerase. Residual PPA1 could affect the stability of the final product.
Leftover enzymes in mRNA formulations not only reduce product quality but also pose safety risks. Sensitive and specific detection methods are essential for quality control and regulatory compliance.

Detection Principle

The assay kit operates on the double-antibody sandwich ELISA principle. Microplate wells are pre-coated with a capture antibody. Upon adding the sample and an enzyme-labeled detection antibody, incubation and washing steps form a capture antibody-antigen-enzyme-labeled antibody complex. After thorough washing, tetramethylbenzidine (TMB) substrate is added. TMB is catalyzed by peroxidase in the detection antibody to produce a blue color, which is subsequently converted to yellow by an acid stop solution. The intensity of the yellow coloration is directly proportional to the antigen concentration in the sample. The optical density (OD) is measured using a microplate reader, and the antigen concentration is calculated based on a standard curve.

Hzymes ELISA Kits: Precise, Reliable, and Easy to Use

Hzymes’ ELISA kits utilize the double-antibody sandwich ELISA principle for highly specific and quantitative detection. Here’s how it works:

Microplate wells are pre-coated with a capture antibody.
Samples and enzyme-labeled detection antibodies are added.
After incubation and washing, the antigen-antibody complex is developed using a TMB substrate, which produces a colorimetric reaction.
The intensity of the yellow color is directly proportional to the enzyme concentration in the sample.
Results are read using a standard microplate reader and quantified via a standard curve.

Product Highlights

DNase I ELISA Kit

1.Testing Procedure

2. Performance Characteristics

Linearity: 0.5-32ng/ml，R^2≥0.99

Lower limit of detection ：＜0.1ng/ml
Lower limit of quantitation ：0.5ng/ml
Precision ： Intra-assay CV ≤10%, Inter-assay CV ≤15%
Recovery ：80%-120%
Applications: mRNA vaccine production, gene therapy, DNA-free RNA workflows

RNase Inhibitor (RNI) ELISA Kit

1.Testing Procedure

2. Performance Characteristics

Linearity: 2-128ng/ml，R^2≥0.99

Lower limit of detection ： ＜0.5ng/ml
Lower limit of quantitation ：2ng/ml
Precision ： Intra-assay CV ≤10%, Inter-assay CV ≤15%
Recovery ：80%-120%
Applications: Quality control in mRNA manufacturing, RNA storage and stabilization workflows

Inorganic Pyrophosphatase (PPA1) ELISA Kit

1.Testing Procedure

2. Performance Characteristics

Linearity: 0.0625-4ng/ml，R^2≥0.99

Lower limit of detection ： ＜0.1ng/ml
Lower limit of quantitation ：0.0625ng/ml
Precision ： Intra-assay CV ≤10%, Inter-assay CV ≤15%
Recovery ：80%-120%
Applications: mRNA IVT process monitoring, transcription yield optimization

Advantages of Hzymes ELISA Kits

✅ High Sensitivity and Wide Detection Range
✅ Reliable Reproducibility for consistent results
✅ User-Friendly Protocols for easy integration into lab workflows

✅ Optimized for mRNA Purity Testing and regulatory documentation

Ordering and Support

Number	Product Name	Cat.No	Specifications
1	DNase I ELISA Kit	HBP003806-1	48T
2		HBP003806-2	96T
3	Inorganic Pyrophosphatase ELISA Kit	HBP003807-1	48T
4		HBP003807-2	96T
5	RNase Inhibitor ELISA Kit	HBP003808-1	48T
6		HBP003808-2	96T

Hzymes provides detailed product documentation, technical support, and flexible ordering options for research labs, CDMOs, and biopharmaceutical manufacturers.

Contact us today to request a quote or discuss bulk supply options.

Email: info@hzymes.com
Website: https://hzymesbiotech.com/