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AAV GMP-like Manufacturing

Overview

GMP-like is a faster and more cost-effective alternative to cGMP production, which can be produced in accordance with standard or customizable specifications. GMP-Source AAV are suitable for preclinical studies and PI initiated clinical trials (IIT).

AAV GMP-like Product:
  • 50L to 500L single-use bioreactor for suspension culture
  • Pall icellis 500m² adherent bed（66m²-500 m²）for adherent culture
  • Ultra-centrifugation (optional) & AKTA Ready/Pilot purification system
  • Quality Inspection
  • Batch record, manufacturing summary report, CoA
AAV

AAV Quality Control (or customized based on specific process)

Specification Assay Methods
Identity GOI Sequence Sanger Sequence
AAV Capsid SDS PAGE/MS
Purity HPLC Purity HPLC
UV Purity A260/A280
%Empty Capsids AEX HPLC
TEM
AUC
Aggregation DLS
Potency & Content Capsid Titer ELISA
Genome Titer ddPCR
Infectious Titer TCID50
Protein Expression In Vitro assay
Impurity Residual Host Cell DNA qPCR
Residual E1A qPCR
HCP Residue ELISA
BSA Residue ELISA
Residual Plasmid ddPCR
Residual Nuclease ELISA
Residual Iodixanol/CsCl HPLC
Residual Ligand ELISA
Safety Mycoplasma qPCR/Mycoplasma culture /DNA staining
rcAAV Cell Assay+qPCR
Bacterial endotoxin LAL
Sterility Direct Inoculation Method/Membrane filtration
Adventitious agent Cell Culture
Abnormal toxicity Animal test
General Characterization Appearance Visual Inspection
Content Minimum Fill
pH pH Method
Osmolality Osmometers
Particulate matter Light Obscuration Particle Count test
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5. GMP AAV Quote Request
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Resources

Are pH measurements required, and is a large amount of sample wasted to carry out pH measurements?

Measurement of pH is a mandatory for the release of rAAV Fast Service deliverables. A micro pH electrode may be used to save sample and thus the required sample volume to perform pH measurements is only ~15uL-100uL.

What is loading?

In accordance with the Pharmacopoeia General Rules 0942, we use the minimum filling quantity inspection method for detecting sample loading quantity.

How to interpret A260/A280 value?

A260/A280 is the ratio of sample absorbance measured at wavelengths of 260nm and 280nm. This measure is commonly thought to represent the ratio of DNA to protein in a sample. For rAAV, A260/A280 can used as a measure of the full to empty shell rate and to identify protein contamination. Low A260/A280 levels may suggest that the empty shell rate is high. Alternatively, high A260/A280 may suggest that the sample has been contaminated with proteins that are not incorporated into the AAV capsid shell. The greatest advantages of this measure are its convenience and speed.

What tests are performed to differentiate rAAV capsid proteins from specific protein impurities?

SDS-PAGE is used to identify rAAV capsid proteins. In addition, SDS-PAGE can be used to directly identify specific protein impurities including the presence of host proteins, BSA, or degraded AAV capsid proteins.

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