Advances in human‑relevant in vitro models are changing how researchers approach preclinical drug testing, with growing interest in platforms that better reflect the complexity of living systems. As pharmaceutical teams seek greater predictive power and alternatives to traditional animal studies, the field is moving toward technologies that capture human biology with higher reliability.
At the forefront of this shift is organ‑on‑a‑chip technology, which aims to provide more physiologically meaningful insights in formats compatible with modern drug development workflows. These systems are evolving from academic prototypes into robust platforms capable of supporting rigorous, repeatable studies across diverse therapeutic areas.
In this interview, Dr. Lorna Ewart, chief scientific officer at Emulate, explores the trends driving this momentum, the scientific principles behind organ‑on‑a‑chip models, and the engineering required to transition them into industry‑ready tools.
Ewart also discusses emerging applications, the importance of reproducibility and scale, and how next‑generation emulation systems could shape the future of preclinical and regulatory science.
Anna MacDonald (AM):
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What problem in drug development inspired the development of organ-on-a-chip technology?
Lorna Ewart, PhD (LE):
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
Quite simply, drug development productivity remains a major challenge. Historically, for every 10 drugs that enter phase 1 clinical trials, only about one succeeds. This low success rate highlights a gap in preclinical models’ ability to accurately predict human outcomes.
That was one of the inspirations behind organ-on-a-chip technology. It was developed to address this challenge by improving the translational relevance of preclinical testing, providing human-relevant data earlier in the pipeline to better inform decisions before clinical trials begin, and increase pharma productivity.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What is organ-on-a-chip technology, and how does it work?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
Organ-on-a-chip is a technology that enables us to recreate the inner workings of biology on a culture device, by bringing cells together in a microenvironment where they believe they're inside the human body. As a result, they should function more like they do in the human body, thereby providing data with a higher translational value.
This technology is well proven and has been widely published across multiple organ systems. The foundational lung-on-a-chip study, published in Science in 2010, demonstrated that the system could model a multistep immune response. Researchers recreated the human alveolar epithelial-endothelial interface and showed immune cell adhesion, migration from the vascular to epithelial compartment, and subsequent bacterial engulfment, mirroring the complex in vivo immune processes. This work established that organ-on-a-chip could reproduce sophisticated human biological functions in vitro.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
How did Emulate transition this technology from academia to industrial application?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
Early organ-chip systems were highly
customized research setups with extensive tubing and separate modules for the
microfluidics and mechanical stretch. These systems were labor-intensive and
had low throughput.
As Emulate spun out of the Wyss Institute,
the technology was engineered into an integrated commercial platform called Zoë®.
This platform consolidated the microfluidics and vacuum stretch into a
pressure-driven, self-contained instrument capable of running up to 12 chips
per unit. With more than 600 instruments deployed globally, this marked a
successful transition from academic proof-of-concept to a worthy industrial
tool.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What evidence supports the Liver-Chip as a predictive model for drug-induced liver injury (DILI)?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
In a landmark 2022 study, Emulate evaluated 870 human
Liver-Chips to assess their ability to model DILI. The team tested 27 small
molecules, 22 of which had known clinical DILI outcomes, across multiple
concentrations.
Liver-Chip successfully identified
hepatotoxic compounds with a sensitivity of 87% and a specificity of 100% while
also distinguishing between structural analogs that were more or less
hepatotoxic, including structurally similar drug analogs such as clozapine
(hepatotoxic) and olanzapine (clinically safer). The platform also demonstrated
superiority compared to hepatic spheroids or animal models.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What challenges remain for widespread industry adoption of organ-on-a-chip systems?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
While the biological value is well
recognized, pharmaceutical companies prioritize reproducibility, reliability,
throughput, and actionable decision-making. Users need statistically rigorous,
scalable systems that can seamlessly integrate into existing workflows and
automation pipelines.
The focus has shifted from proving
biological relevance to demonstrating operational robustness and enabling
confident decision-making for risk assessment and first-in-human transitions.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
In what ways does the AVA™ Emulation System advance scalability and reproducibility for organ-on-a-chip technology?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
AVA represents Emulate’s response to the
industry’s demand for platforms that combine biological relevance with
operational rigor. The benchtop, self-contained system integrates environmental
control, automated imaging, and high-throughput capacity. AVA supports up to 96
chips (emulations) per run, while reducing hands-on time by approximately 60%.
Automation-ready consumables enable seamless integration with robotic liquid
handling.
Equally important, the platform has
demonstrated strong technical and biological reproducibility. Microfluidic flow
remains tightly controlled (<5% variation), 94% of chips pass quality
control thresholds, hepatocyte function remains consistent, and results have
been replicated across internal and external laboratories.
Together, these performance metrics suggest
that AVA is engineered not only for scale but for the statistical confidence
required in regulatory and industrial decision-making.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What role does data scale play in the future of organ-on-a-chip systems?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
AVA generates thousands to millions of
multimodal data points per experiment through longitudinal sampling, imaging,
and endpoint molecular analyses. This rich dataset enables integration with AI
and digital modeling approaches.
As datasets grow and qualification programs
mature, organ-chips could contribute to next-generation risk assessment
frameworks, potentially reducing reliance on animal testing and enhancing
confidence in human translation.
AM:
Senior Science Editor
Technology Networks
Anna is a senior science editor at Technology Networks. She holds a first-class honors degree in biological sciences from the University of East Anglia. Before joining Technology Networks she helped organize scientific conferences.
What is the long-term vision for organ-on-a-chip technology in regulatory science?
LE:
Chief Scientific Officer
Emulate
Lorna Ewart is chief scientific officer at Emulate. With more than two decades of experience in pharmaceutical R&D, Dr. Ewart has been a driving force in advancing bioscience and drug safety innovation. At Emulate, she leads the biological sciences division and plays a pivotal role in shaping the company’s scientific vision, guiding its collaborations across academia, industry, and regulatory agencies.
In the near term, organ-chips may coexist
alongside traditional animal models to strengthen first-in-human
decision-making. As validation progresses, there is potential to reduce from
two animal species to one, and ultimately to replace animal testing in certain
contexts.
The ultimate goal is to support a more
predictive, human-relevant preclinical ecosystem, combining organ-chips,
digital twins, and AI-enabled models to improve drug development outcomes.
The
introduction to this interview includes text that has been created with the
assistance of generative AI and has undergone editorial review before
publishing. Technology Networks' AI policy can be found here.