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SMARTCell: Scalable Manufacture of Advanced Regenerative Therapeutics - Cell Therapies

Lead Research Organisation: UNIVERSITY COLLEGE LONDON
Department Name: Biochemical Engineering

Abstract

The most significant healthcare challenge facing the UK is the unavoidable transition towards an older, ageing population, resulting in an increased demand for hospital and social care, complex medical interventions, spiralling costs and increased societal burden. The development of new, affordable and effective medicines will therefore be necessary to ensure we maintain and improve the standard of UK and global healthcare.

A new type of medicine, advanced cell and gene therapy (CGT), has recently emerged as a promising treatment option for previously incurable conditions. CGTs will form the next-generation of advanced medicines with the potential to improve UK health and wealth. Examples of CGTs include cellular immunotherapies. These are medicines which use genetically-engineered cells to target cancer cells. Chimeric antigen receptor natural killer cell therapies (CAR-NK) are an example of a cellular immunotherapy. Natural killer cells are a key immune cell type that fights infections in our bodies, however, we can genetically-engineer them to express a non-native protein (the CAR) which allows the NK-cells to target and eliminate blood cancer cells, an ability they only possess because of the non-native CAR protein. These gene-modified therapies have demonstrated remarkable clinical success and offer a revolutionary approach to treat patients who have failed every other treatment option (e.g. chemotherapy, bone marrow transplant) and are ultimately destined to die of their disease. However, this new treatment option has resulted in dramatic outcomes, with patients in complete remission for years after receiving the therapy. It has effectively cured patients of their cancer.

However, despite their clinical promise, approved immunotherapies suffer from high costs (>$350,000 per dose), poorly defined manufacturing processes and challenging gene engineering approaches involving the use of expensive and complex viruses as vehicles for gene delivery. Without significant manufacturing innovations, the promise of these transformative, curative therapies will not be realised, and they will remain inaccessible to the vast majority of patients that need them. The implications for UK health, wealth and well-being are profound.

My Fellowship focuses on establishing a scalable manufacturing process for CAR-NK therapies and demonstrating the first litre-scale production for CAR-NK cells. This will be achieved by creating an innovative and intelligent control strategy to improve the production process and increase the number of cells that can be manufactured. We will use scientific and engineering approaches to understand how the cellular environment can be made more conducive to encourage cell growth, specifically monitoring and controlling the environmental conditions (e.g. gases, nutrients, temperature, pH) to support optimal cell production. We will establish the process conditions and technologies that are required to grow and generate sufficient numbers of cells for clinical applications. We will also develop a new way to engineer the cells using an approach that doesn't require the use of viruses (a non-viral approach) which is based on mechanical and chemical methods.

My Fellowship research programme will support the industrial and clinical communities to deliver this next-generation of advanced medicines to treat patients in the UK and ensure these therapies are accessible to the patients that need them at a price that is affordable for the UK health system to bear. This will also support the development of the growing cell and gene therapy manufacturing industry in the UK and support economic activity in the high-growth biomanufacturing sector.

Publications

10 25 50

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Nettleton DF (2023) Smart Sensor Control and Monitoring of an Automated Cell Expansion Process. in Sensors (Basel, Switzerland)

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Ochs J (2022) Needle to needle robot-assisted manufacture of cell therapy products. in Bioengineering & translational medicine

 
Description Through our SMARTCell Fellowship, we have successfully developed a new type of human stem cell that can grow in suspension, meaning it no longer needs a solid surface to grow on. This breakthrough makes it much easier and more efficient to produce these cells at large scales. Importantly, these cells naturally release tiny biological packages called extracellular vesicles (EVs), which have significant potential in regenerative medicine and drug delivery. By adapting these stem cells for large-scale growth, we are paving the way for more cost-effective and scalable production of EV-based therapies. We are now in the process of licensing this technology, which could help accelerate its use in future medical applications.

Moreover, in the SMARTCell Fellowship work, we have established scalable and reproducible bioprocesses for CAR-T production. CAR-T cell therapy is a groundbreaking treatment that uses a patient's own immune cells to fight cancer. However, manufacturing these personalised therapies is complex, highly variable, and costly, making it difficult to ensure consistent quality and scalability. Through our research, we have applied the Quality by Design (QbD) framework to revolutionise the way CAR-T cells are produced.Our work has led to a systematic and data-driven approach for improving CAR-T manufacturing by identifying key factors that influence the process and ensuring that each step is optimised for reliability and efficiency. By using Process Analytical Technology (PAT) and advanced monitoring tools, we can track and control critical quality attributes in real-time, reducing variability and enhancing the potency and safety of the final product. This research marks a major step toward making CAR-T therapies more scalable, cost-effective, and widely accessible to patients. By establishing robust manufacturing processes, we are not only improving treatment consistency but also helping to pave the way for more widespread adoption of this life-saving therapy.
Exploitation Route The outcomes of this funding have the potential to significantly impact cell and gene therapy manufacturing by improving scalability, consistency, and accessibility of advanced therapies.

S-hMSC Technology for Extracellular Vesicle (EV) Production:
Our development of a suspension-adapted human mesenchymal stem cell (S-hMSC) line enables large-scale production of extracellular vesicles (EVs), which have broad applications in regenerative medicine, drug delivery, and immunotherapy. This innovation eliminates the reliance on traditional adherent cultures, making the process more efficient and cost-effective. We are now in the process of licensing this technology, allowing biotech and pharmaceutical companies to adopt it for therapeutic and commercial applications.

Quality by Design (QbD) for CAR-T Manufacturing:
Our work applying QbD principles to CAR-T cell therapy production provides a blueprint for scalable, high-quality, and cost-effective manufacturing. By systematically identifying critical quality attributes and integrating Process Analytical Technology (PAT), we have demonstrated how real-time process monitoring can enhance efficiency, product consistency, and regulatory compliance. These findings can be adopted by academic, clinical, and commercial manufacturers to refine their CAR-T production strategies, ultimately improving patient access to these life-saving therapies.

By sharing our methodologies, publishing our findings, and working toward commercial partnerships and regulatory alignment, we anticipate that these innovations will accelerate the development of next-generation cell and gene therapies, benefiting both researchers and industry stakeholders worldwide.
Sectors Education

Healthcare

Manufacturing

including Industrial Biotechology

Pharmaceuticals and Medical Biotechnology

 
Description The research conducted under the SMARTCell Fellowship has significantly advanced cell and gene therapy manufacturing by improving the scalability, consistency, and accessibility of key therapeutic platforms. Our work has already started to shape industrial and clinical practices, with major companies and organisations adopting and adapting our findings for commercial and therapeutic applications. Industry and Economic Impact: 1. CAR-T Manufacturing: Companies such as Sartorius and other CAR-T therapeutic developers are actively using our Quality by Design (QbD)-based process control strategies to refine their manufacturing workflows. By implementing our process analytical technologies (PAT) and real-time monitoring approaches, these companies are improving the efficiency, reproducibility, and scalability of CAR-T therapy production, helping to lower costs and accelerate patient access to these life-saving treatments. 2. S-hMSC Licensing and Adoption: Our development of a suspension-adapted human mesenchymal stem cell (S-hMSC) line is now being licensed by ATCC, a leading global biological resource centre. This licensing agreement will enable widespread commercial and research use of our cell line, facilitating large-scale production of extracellular vesicles (EVs) for regenerative medicine, drug delivery, and immunotherapy. Broader Societal and Clinical Impact: The improvements in CAR-T manufacturing efficiency have direct implications for enhancing patient accessibility and affordability of advanced cancer treatments, particularly for autologous CAR-T therapies. The S-hMSC technology addresses a critical bottleneck in EV-based therapeutics, which are being explored for applications in tissue repair, inflammation modulation, and targeted drug delivery. By enabling more consistent and cost-effective EV production, this technology paves the way for future clinical trials and commercial therapies. Challenges Overcome and Research Impact: One of the key challenges in CAR-T manufacturing is its high variability and lack of real-time control, which our research has addressed through QbD-driven methodologies and predictive modelling. Scaling up hMSC culture for EV production has been a long-standing barrier, and our shift to suspension-based growth removes the need for surface-dependent cell expansion, making bioprocessing far more scalable and commercially viable. Within academia, this work has nucleated a new research direction at the intersection of bioprocess engineering, advanced analytics, and regenerative medicine, leading to cross-sector collaborations and follow-on funding opportunities. Future Impact and Outlook: As our CAR-T manufacturing strategies and S-hMSC technology continue to gain traction, we expect to see further industry uptake, clinical advancements, and policy influence in the coming years. Through partnerships, licensing, and knowledge exchange, this research is playing a pivotal role in shaping the next generation of cell and gene therapy biomanufacturing.
First Year Of Impact 2024
Sector Education,Healthcare,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology
Impact Types Societal

Economic

 
Description Influence on Clincal Practice for Cell Therapy Manufacture & Delivery
Geographic Reach Europe 
Policy Influence Type Influenced training of practitioners or researchers
Impact The change arising from this activity was the influence of clincal practice and improved educational and skill level of the clinical workforce (clinicians, nurses, healthcare providers) for the development, integration and implementation of artificial intelligence and controlled manufacturing processes for cell therapy development.
 
Description Participation in a US FDA Event focused on Cell and Gene Therapy Manufacture
Geographic Reach Multiple continents/international 
Policy Influence Type Participation in a guidance/advisory committee
Impact The workshop event organised by the FDA was designed for their own CMC review team to make them aware of what was emerging and technologies and processes that they will need to be in a position to start regulating moving forward. A key change and influence on policy therefore was the increased awareness and improved educational skill level and knowledge base for regulating cell and gene therapies and future technologies.
 
Description C&G TIN pilot data scheme
Amount £9,250 (GBP)
Organisation University College London 
Sector Academic/University
Country United Kingdom
Start 02/2022 
End 12/2023
 
Title Generating suspension-adapted human mesenchymal stromal cells (S-hMSCs) for the scalable manufacture of extracellular vesicles 
Description We developed and generated, for the first time, a suspension-adapted human telomerase reverse transcriptase (hTERT) immortalized human mesenchyma stem cell line, eliminating the need for microcarriers or other matrixes to support cell growth. This novel cell line, named suspension hMSCs (S-hMSCs), has a doubling time of approximately 55 hours, with a growth rate of 0.423/d. Regarding its immunophenotype characteristics, S-hMSCs retained close to 90% of CD73 and CD105 expression levels, with the CD90 receptor being downregulated during the adherent to suspension adaptation process. An RNA sequencing analysis showed an upregulation of the transcripts coding for CD44, CD46 and CD47 compared to the expression levels in AT-hMSCs and hTERT-hMSCs. The cell line herein established was able to generate EVs using a chemically defined medium formulation with these nanoparticles averaging 150 nm in size and displaying the markers CD63, CD81, and TSG101, while not expressing the negative marker calnexin. This body of evidence, combined with the visual confirmation of EV presence using transmission electron microscopy, demonstrates the EV-producing capabilities of the novel S-hMSCs. This cell line provides a platform for process development, drug discovery and translational studies in the EV field. 
Type Of Material Cell line 
Year Produced 2024 
Provided To Others? Yes  
Impact We are currently in the process of licensing this cell line with the international body ATCC. We have also provided this cell line to academic investigators in Asia as part of a collaboration activity. We have also published our protocol for generating the cell line and working with academic labs globally to support with the generation of similar cell lines. 
URL https://www.sciencedirect.com/science/article/pii/S1465324924007680
 
Description Collaboration with Getinge Applikon Biotechnology 
Organisation Applikon Biotechnology B.V.
Country Netherlands 
Sector Private 
PI Contribution This collaboration with Getinge Applikon Biotechnology on the EPSRC Fellowship award focuses on characterisation and development of cell therapy processes in the Applikon bioreactor systems. From our research team, we have generated extensive datasets for cell therapy processes using existing and new Applikon technologies which have been used for internal company technology development. The PI (Dr Qasim Rafiq) also sits on the company's Scientific Advisory Board for Cell Therapy.
Collaborator Contribution Applikon have provided access to new technologies and beta platforms before they are avaialble on the market which allows for early-access to key equipment and technologies. Applikon have also provided >£20k complimentary consumables for the project and have provided discounted rates (30%) for the technology. Moreover they have provided extensive and significant technical support as we attempt to apply new use cases to the technology.
Impact Internal company presentations and the PI (Dr Qasim Rafiq) sitting on the Getinge Applikon Scientific Advisory Board for Cell Therapies. Datasets for novel cell therapy processes.
Start Year 2022
 
Description Collaboration with Royal Free Hospital GMP Unit 
Organisation Royal Free Hospital
Department Department Haematology
Country United Kingdom 
Sector Hospitals 
PI Contribution Supporting with the process development research activity to support the advancement of cell and gene therapies, specifically CAR-T and CAR-NK.
Collaborator Contribution Access to GMP facilities and understanding of the current manufacturing and process challenges associated with ATMP manufacture.
Impact Joint award of an InnovateUK Regulatory grant, specifically UK Regulatory Science and Innovation Networks - Discovery phase, entitled "Speed-CELL: Accelerating Cell Therapy Release for Rapid Clinical Deployment". This award was £50,000 to focus on supporting witht he rapid clinical reployment of cell therapies.
Start Year 2023
 
Description Sartorius Collaboration for Allogeneic Immunotherapy Production 
Organisation Sartorius
Country Germany 
Sector Private 
PI Contribution We have worked closely with Sartorius to develop an end-to-end production process for allogeneic immunotherapy manufacture in line with the Fellowship goals, specifically around scalable lymphocyte production. This has included the identification of new process parameters to support improved expansion of cells and improved efficiencies. I have also supported as part of their Advanced Therapy advisory board team and continue to provide expert input into the company's future strategic direction.
Collaborator Contribution Sartorius have provided significant resources, both consumables and equipment provision, as well as researcher and expert time to support with large-scale platform manufacture activity.
Impact Two publications have arisen from this collaboration directly connected with the Fellowship: 1. Hood T, Springuel P, Slingsby F, et al. Establishing a scalable perfusion strategy for the manufacture of CAR-T cells in stirred-tank bioreactors using a quality-by-design approach. Bioeng Transl Med. 2025;e10753. doi:10.1002/btm2.10753 2. Hood T, Slingsby F, Sandner V, Geis W, Schmidberger T, Bevan N, Vicard Q, Hengst J, Springuel P, Dianat N and Rafiq QA (2024) A quality-by-design approach to improve process understanding and optimise the production and quality of CAR-T cells in automated stirred-tank bioreactors. Front. Immunol. 15:1335932. doi: 10.3389/fimmu.2024.1335932
Start Year 2024
 
Description Hosted a Workshop for Cell Therapy Manufacturers and Technology Developers 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact I organised and hosted a workshop at the 2023 CAR-TCR Europe Summit at the ExCeL entitled "Developing Digital Bioprocesses & Smart ATMP Manufacturing Platforms". The session focused on three key aspects:

1. Identify and discuss the role that automation has the potential to drastically reduce the cost of goods and make scaling up more feasible while reducing deviations in manufacturing.
2. Understand the role that digital tools (e.g. Artificial Intelligence, Machine Learning, Digital Twins) can support ATMP manufacture and examples of how they could be implemented.
3. Presenting findings from recent manufacturing skills survey and discuss strategies and approaches for effective training, skilled recruitment and retention for CGT manufacturing roles

There were 45 people present for the session ranging from therapeutic and technology manufacturers, regulators, individuals representing charity and patient organisations and sector consultants. The session was a full-day activity and involved a presentation and structured/directed discussion sections. We had discussion topics focused on:

Discussion 1 - What are the key bottlenecks and manufacturing challenges for CAR-T production?
Discussion 2 - What does the future of CAR-T manufacture look like? 
Discussion 3 - How do we train the next generation in CGT manufacture?

This led to multiple outcomes including consensus on some key challenges and approaches, scope for future collaborations and requests for additonal and future session.
Year(s) Of Engagement Activity 2023
 
Description Hosted a Workshop for Pall Life Sciences Research & Development Leadership Programme 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact I hosted a dedicated workshop for Pall Life Sciences Research & Development Leadership Programme. This is a cohort of >60 employees across Pall's multiple international sites who represent the company's future Leadership team. The workshop was focused on cell and gene therapy manufacture and how the tools and technologies being developed can support novel therapy production. This also included multiple discussions centered around future requirements and needs from an end-user perspective as well as likely impact of future regulations.
Year(s) Of Engagement Activity 2023
 
Description Hosting a student visit to UCL Biochemical Engineering 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Schools
Results and Impact The focus of this school visit was to introduce biochemical engineering, and more specifically, my research focus on cell therapy manufacture. This involved presentations, activities and a tour of our facilities. 25 students attende and there was a vibrant discussion regarding the role of cell and gene therapies, discussion of the ethical implications and issues of cost and manufacture, and ultimately discussions around university life and entry requirements.
Year(s) Of Engagement Activity 2023
 
Description Presentation at European Early-Career Workshop 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact I presented and delivered talks and a session for the ESACT Frontiers meeting (European meeting) to early-stage researchers in both academia and industry to support their career development and providing perspectives on my career.
Year(s) Of Engagement Activity 2023
 
Description Presentation at the CAR-T meeting organised by European Bone Marrow Transplantation meeting 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact Attendance and delivery of presentation at the EBMT CAR-T Meeting focusing on smart processes for the manufacture of advanced therapies.
Year(s) Of Engagement Activity 2023,2024
 
Description Technical Presentation to Sartorius R&D Team 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact I presented a technical presentation of our process R&D work and manufacturing capability based on research within this grant to Sartorius' R&D team, including their Senior Leadership Team which has subsequently informed their strategic development and priority activities.
Year(s) Of Engagement Activity 2025
 
Description Technical and Scientific Presentation to iBET Portugal Team 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact I was invited by iBET Portugal to deliver a technical/scientific presentation on the work undertaken in the FAST CAR-T and SMARTCell projects to their research teams, with a view to using the opportunity to collaborate and put in joint grants for future EU calls.
Year(s) Of Engagement Activity 2025
 
Description Technical and Teaching Session to CTMC Houston 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact I delivered a technical presentation on Design of Experiments and Quality by Design based on the success of our publications for SMARTCell relating to QbD approaches for cell and gene therapy manufacture. This led to increased awareness and opportunities for future collaboration and change in professional practice.
Year(s) Of Engagement Activity 2025