AAV Quality Study & QC Services
Quality control (QC) is so critical for gene therapy CDMO that makes the maintaining of a robust and reliable QC system a must in both production and application. PackGene is highly devoted to AAV GMP manufacturing and quality control for AAV-based products. PackGene has a highly skilled and experienced team for GMP QC technology to develop and deliver QC assays for plasmid and AAV Fast Services. Our QC technology employs multiple assays to meet the requirements of your projects. We offer a variety of assays and methods for you to choose and combine a multimerized GMP assay service from raw materials, stock liquid, harvested liquid, to the final products.
PackGene has developed systematic AAV-based assays, including identification, verification and qualification to ensure our AAV Fast Services under GMP condition to attain the consistent quality at every stage. Here are list of the assays and methods.
Interested in our AAV services? Contact us for a free consultation or Request a quote.
| Category | Assays | Method |
| General | Appearance | Visual inspection |
| Visible foreign matter | Visual inspection | |
| pH | pH indicator | |
| Osmolality | Molar concentration method | |
| Loading capacity | Volume method | |
| Identifications | Capsid identification | SDS-PAGE |
| Plasmid identity | Sanger Sequencing | |
| Purity | Protein | SDS PAGE |
| A260/A280 | UV | |
| HPLC Purity | HPLC | |
| Content/Potency | Genome titer | ddPCR |
| Infection titer | TCID50 | |
| Target gene expression | ELISA | |
| Impurity | Host DNA residue | qPCR |
| Host DNA Fragment size | qPCR | |
| HCP residue | ELISA | |
| Exogenous DNA residue | ddPCR | |
| BSA residue | ELISA | |
| Nuclease residue | ELISA | |
| Plasmid residue | ddPCR | |
| rcAAV | qPCR | |
| E/F ratio | HPLC | |
| Transfection residue | Assay developing | |
| Antibiotic residue | ELISA | |
| Safety Tests | Sterility test | Membrane filtration |
| Exogenous viral factor | Animal experiments | |
| Abnormal toxicity | Animal experiments | |
| Mycoplasma | Direct cultivation | |
| Bacterial endotoxin | LAL | |
| rcAAV | qPCR+Cell assay | |
| RCR/RCL | PCR |
PackGene provides implementation of new assays that follows through several stages: development, optimization, qualification, and validation. The differentiations are.
- Assay development. The data to be collected is identified and the necessary instrumentation, reagents (and/or kits) are selected for a specific assay. The performance parameters are outlined on a preliminary basis.
- Assay optimization. In this phase, a series of experiments are conducted in order to document how various sample and assay conditions affect assay performance. This information will be used to set the acceptance criteria for fast service phases.
- Assay qualification. The qualification phase is designed to demonstrate that the optimized method provides meaningful data for the specific samples and under the same conditions to be used when the method is fully applied. The protocol is formalized and circulated for review and discussion. Following approval, the protocol is tested and a written report is compiled in which all results, analyses, and conclusions are outlined. The report is then circulated for final approval before the method implementation.
- Assay Validation. The protocol is reviewed under the same procedure as in the qualification phase, but in a more comprehensive manner. The performance of the assay is documented with respect to accuracy, linearity, range, limit of detection (LOD), limit of quantitation (LOQ), specificity/selectivity, precision, and suitability. Validation may include inter-laboratory comparisons as well.
GMP assay methods are typically reevaluated on a set schedule, to confirm that they are continuing to perform as originally intended. Methods are also reassessed as available technologies developing, regulatory update or any other factors arise that may necessitate a method change.
PackGene quality control laboratory
HPLC assay platform for AAV purity and empty to full rate assay
PackGene can provide GMP AAV assay and QC services for your project. Please provide certain project details to get a quote or technical recommendations from PackGene.
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