The FDA further expands collaboration with CN Bio to evaluate the PhysioMimix Multi-organ microphysiological system

  • Expansion of five-year collaboration broadens established Organ-on-a-chip research demonstrating advanced performance of the PhysioMimix MPS
  • New research project to investigate the use of multi-organ MPS to improve estimation of human drug bioavailability in comparison to existing animal models

Cambridge, UK, 17th January 2023: CN Bio, a leading Organ-on-a-chip Company (OOC) that designs and manufactures single-and multi-organ microphysiological systems (MPS), today announced that the U.S. Food and Drug Administration (FDA) and CN Bio have expanded their collaboration for the second time, with new research aiming to evaluate multi-organ MPS and their applications using the PhysioMimix™ Multi-organ System. Building on the success of prior studies, the system will initially be investigated for improving the preclinical estimation of human drug bioavailability compared to standard animal models.

For orally administered drugs, a critical parameter that needs to be understood by drug developers and regulatory agencies is bioavailability. Bioavailability is defined as the fraction of drug reaching the bloodstream. Accurately predicting the bioavailability of orally administered medicines in humans during preclinical development is crucial as it forms the basis for setting safe and efficacious doses in the clinic. Animal models currently dominate when estimating bioavailability, but evidence has shown these models are poor predictors in part due to inherent physiological and metabolic differences. Paving the way for approaches such as MPS, the recently passed FDA Modernization Act 2.0 has removed the mandatory requirement for animal testing for toxicity where enhanced performance is proven using in vitro alternatives1.

CN Bio’s PhysioMimix Gut/Liver model recapitulates in vitro the structure and function of these human tissues and their fluidic interaction, for comparing intravenous and oral compound dosing. This model uniquely recreates the combined effect of intestinal permeability and first-pass metabolism by the liver for the prediction of human oral bioavailability.

During the last five years of collaboration with CN Bio, the FDA has utilized the PhysioMimix Liver model for drug toxicity and metabolism studies resulting in the first co-publication, peer-reviewed article between an MPS provider and a regulator 2. Within the same year, the FDA and CN Bio broadened their partnership further to explore the potential of the Company’s Lung model across various inhaled drug applications — work on this is still ongoing 3.

Dr Emily Richardson, Lead Scientist at CN Bio, said: We are extremely pleased with the FDA’s decision to deepen our research collaboration into the multi-organ space. We are working hard to evidence how our technology can tackle these critical drug development bottlenecks and lead the way towards inclusion of OOC/MPS data within IND submissions.”

For more information on CN Bio’s PhysioMimix OOC range of products, please visit:

  1. Congress Approves Landmark Measure to Reduce Animal (
  2. Rubiano, A., Indapurkar, A., et al., 2021. Characterizing the reproducibility in using a liver microphysiological system for assaying drug toxicity, metabolism, and accumulation. Clinical and Translational Science, 14(3), pp.1049-1061.
  3. Press release: The FDA expands collaboration with CN Bio to investigate lung-on-a-chip model for inhaled drug evaluation applications (5th May, 2021)
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