Plasmid tests

Testing of plasmids (non-viral vectors) for gene therapy

Plasmid DNA is currently gaining increasing importance for clinical research applications in gene therapy and genetic vaccination. For direct gene transfer into humans, good manufacturing practice (GMP)-grade plasmid DNA is mandatory. The same holds true if the drug substance contains a genetically modified cell, for example chimeric antigen receptor (CAR) T cells.

In Generi Biotech, we offer testing of the plasmids for residual host cell DNA, which is considered an unacceptable impurity in an intermediate or final gene therapy product.

We can also test your artificial vectors and viral vaccines for the presence of wild type virus, which is also a contaminant and can pose a serious safety threat.

Our typical GMP package also includes:

DNA concentration by absorbance spectroscopy (DNA purity by OD 260/280)
identity test by restriction digest
total plasmid purity check by agarose gel electrophoresis
plasmid sequence GMP grade ( four- fold coverage)
endotoxin
mycoplasma by qPCR

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gb SG PCR Master Mix

gb SG PCR Master Mix falls into a group of Real-Time PCR Master Mixes to provide Dye-based qPCR. The product consists of hot-start Taq DNA polymerase, reaction buffer, dNTP, MgCl2, sybrgreen and additives that prevent PCR inhibition. Taq polymerase is chemically modified DNA polymerase from Thermus aquaticus. This polymerase is completely inactive at room temperature but it is rapidly activated during the initial denaturation step of PCR.

Alternative dyes for oligonucleotides/probes labeling

Why choose alternative dyes instead of "genuine" dyes? First, they are cheaper, and second, they can give the same results. Another reason is that the number of suppliers who can provide modified oligonucleotides is restricted - only a patent or a licence owner is usually allowed to produce them.