Technology Platform: ChemStress Fingerprinting

The ChemStress plate simulates the biological and environmental stresses a cell clone encounters in a bioreactor. Each of the wells of the ChemStress 96-well plate are pre-coated with multiple small molecule chemicals, which re-create the environmental and biological stresses of a bioreactor. Each chemical has been carefully selected to challenge a particular aspect of a cell clones biochemistry. Some of these challenges include: Nutrient Starvation; Oxidative Stress; pH, Osmolarity and Toxicity. For example, Brefeldin A inhibits protein transport and is a lactone antibiotic.

Process Control with ChemStress


How To Generate A ChemStress Fingerprint

An individual cell clone is grown in the ChemStress plate for 3 days. After exposure to the chemical stressors, clonal growth and product titre are measured in response to each of the chemical stressors. This is read on a plate reader and analysed using the Valitacell software 'ValitaAPP'. ValitaAPP performs the analysis of a cell clones growth and titre profile using product-specific algorithms. This makes up a clones ChemStresss Fingerprint, and this fingerprint is unique to an individual cell clone or a media batch. 

1) An individual cell clone is grown in the ChemStress plate for 3 days and exposed to the numerous small molecule chemicals 2) A clones growth and productivity are measured on a plate reader 3) ValitaAPP software applies product-specific algorithms to analyse the growth and titre data and a ChemStress fingerprint is generated.

ChemStress Products

The ChemStress fingerprint can be used at various different stages during cell line development to shorten the drug production timeline by months. ChemStress fingerprinting has four product-specific applications;