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What if the bottleneck in cell line development isn’t how many clones you screen, but how you track them?
Cloning workflows have long relied on brute force: screen more cells, automate harder, and hope that small-scale performance predicts manufacturability. But too often, the “perfect” clone in a 96-well plate turns into a dud when it reaches the bioreactor. That disconnect costs time, money, and promising therapies.
This week, host David Brühlmann welcomes Kent Rapp, Co-founder and CEO of Biolinco, an entrepreneur who’s turning the classic approach to cell line development inside out. Drawing from his background in chemical engineering and his work in biomanufacturing at Johns Hopkins University, Kent teamed up with DNA barcoding experts to pioneer a new workflow: barcode every cell, pool them, and track their true performance in the environment that matters.
Topics discussed:
Smart insight: According to Kent, biotech as an industry has a tendency to "automate problems instead of solve them". Rather than addressing the root causes—like lack of meaningful measurements at relevant scales—companies often throw more robots and more plates at the issue, hoping brute force will finally yield the magical clone. But real process improvement requires a rethinking of what is being measured and how those insights are generated—not just a higher throughput of the same flawed assay.
If this got you rethinking how you screen clones, you'll want these next. We've tackled cell line development, high-throughput screening, and the art of spotting manufacturable candidates early from a few different directions — here are four worth queuing up.
Connect with Kent Rapp:
LinkedIn: www.linkedin.com/in/kent-rapp
Biolinco website: www.biolinco.com
Free 5-day email course, The CMC Failure Chain: the five recurring CMC mistakes that put your promising program at risk → Get it here
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Your active ingredient is the nucleic acid. So why does a proteolipid vehicle filing include viral clearance studies, stability data and full characterisation of a membrane protein that is not the drug? Because that protein sits on the particle surface, and a component nobody has filed before is the agency's problem regardless of what you call it.
Proteolipid vehicles (PLVs), the platform Jitendra Kumar works on as Lead Scientist for Chemistry and Process Development at Entos Pharmaceuticals, represent a novel frontier in drug delivery, Instead of being taken up into an endosome and having to escape it, a PLV fuses with the cell membrane and releases cargo straight into the cytosol. That opens targets and patient groups that liver-tropic lipid nanoparticles and viral vectors have struggled to reach, and it leaves Kumar building a regulatory file with nothing on the shelf to copy.
Highlights from the episode:
Smart insight: A persistent challenge for groundbreaking delivery systems is the lack of established regulatory playbooks. Jitendra Kumar laid out a science-first approach: let data do the talking, supported by rigorous GLP toxicology studies and transparent communication with agencies. Regulatory bodies like Health Canada are receptive to innovation, provided that sponsors demonstrate safety, efficacy, and scientific rationale for any deviation from standard criteria.
If this conversation got you thinking about how novel delivery vehicles reach the cell — and what it takes to carry one from bench through CMC, scale-up, and regulatory review — these four episodes go deeper:
Connect with Jitendra Kumar:
Free 5-day email course, The CMC Failure Chain: the five recurring CMC mistakes that put your promising program at risk → Get it here
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Gene therapy only works if the cargo reaches the right cells intact. Adeno-associated viruses (AAV) and lipid nanoparticles have carried the field this far, but both share a constraint: the particle is taken up into an endosome, and the payload has to escape that compartment before it is degraded. Endosomal escape is where a large share of the dose is lost, and it is why delivery, not the genetic construct, is usually the thing that limits the therapy. Lipid nanoparticles carry a second constraint, since they tend to accumulate in the liver, which narrows the diseases they can reach. What if the particle never entered that way at all?
Jitendra Kumar, Lead Scientist for Chemistry and Process Development at Entos Pharmaceuticals, works on a platform that fuses directly with the cell membrane and releases its cargo straight into the cytosol. He came to nanoparticle design the long way, through fifteen years of structural biology on the prion protein in Frankfurt and Edmonton, which is why he thinks about particle size, packaging and diffusion the way he does.
Key topics discussed:
Smart insight: Jitendra’s takeaway for startups: for early phases, find a partner who genuinely understands your tech and can move at your pace rather than defaulting to a big CDMO, treat your network as infrastructure, and build the ability to run production in-house. The one thing that's never up for negotiation is process robustness. The real question isn't robustness vs. speed, but how many checkpoints and safe pause points you build in so you can have both.
If this conversation got you thinking about how novel delivery vehicles reach the cell — and what it takes to carry one from bench through CMC, scale-up, and regulatory review — these four episodes go deeper:
Connect with Jitendra Kumar:
Free 5-day email course, The CMC Failure Chain: the five recurring CMC mistakes that put your promising program at risk → Get it here
Support the show
For decades, drug development has been saddled with costly manufacturing, stringent biosafety requirements, and the limits of conventional carriers. But a new approach—born from cell-derived nanovesicles—could democratize access to advanced therapies and open entirely new doors for oral, topical, and even global vaccine delivery.
This week, David Brühlmann welcomes Christopher Locher, CEO and Co-founder of Versatope Therapeutics. Christopher has shaped the translation of novel vesicle technology from idea to clinical pipeline, navigating both the science and the unstructured realm of first-in-class GMP manufacturing.
Topics discussed:
Smart insight: Christopher is honest about his blind spots, learning on the fly from CMC consultants, and the practical importance of “good enough” regulatory solutions delivers sharp advice for anyone charting the long road from discovery to human trials. Think monoclonal analytics, batch consistency, and the art of prioritization, all from someone who’s made it work with a small team and limited resources
If Christopher's vesicle platform has you thinking about building a novel modality on an unconventional host, these four episodes go deeper on alternative production systems, microbial scale-up, and the CMC and cost decisions that get a first-in-class biologic to patients.
Connect with Christopher Locher:
Website: www.versatope.com
LinkedIn: www.linkedin.com/in/christopher-locher-biotech
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What if the best way to unlock durable, broad-spectrum immunity is to rethink the very vessels delivering our vaccines?
While much of the industry focuses on refining existing delivery systems, Christopher Locher is charting a new course—one inspired by nature’s own couriers. Imagine a future where oral vaccines and modular, on-demand manufacturing aren’t just possibilities, but standard practice.
Christopher Locher, CEO and Co-founder of Versatope Therapeutics, brings decades of experience in drug discovery from Vertex Pharmaceuticals, Opsona Therapeutics, and Maxigen. In this episode, he shares his journey from high school science classrooms to the helm of a company pioneering recombinant extracellular transport vesicles—nanovesicles that promise to transform vaccine delivery and immunomodulation.
Topics discussed:
Smart insight: Christopher Locher highlighted that the FDA allowed their IND submission for a universal influenza vaccine in less than a month after review—and notably, with no hold clinical questions—when it was submitted just before the Christmas holidays and allowed on January 19th, 2025. This rapid regulatory turn-around was made possible by a strong regulatory team and collaborative CDMO efforts, showcasing how innovative platforms and well-prepared submissions can accelerate early-stage clinical development in biotech.
If Christopher's vesicle platform has you thinking about building a novel modality on an unconventional host, these four episodes go deeper on alternative production systems, microbial scale-up, and the CMC and cost decisions that get a first-in-class biologic to patients.
Connect with Christopher Locher:
Website: www.versatope.com
LinkedIn: www.linkedin.com/in/christopher-locher-biotech
Support the show
How do you take a model that works in process development and get it accepted for use in GMP manufacturing? That question stalls most bioprocess modeling projects before they start. Ignasi Bofarull-Manzano, Senior Data Scientist and CMC Consultant at Körber Pharma, pushes back on the premise: the process you run today is already governed by a mathematical model, fitted once at small scale during process characterization and then left untouched for years, even as the process shifts.
Part 1 separated digital models from digital shadows and digital twins, and made the case for starting with the decision rather than the data. Part 2 goes into the plant: what regulators actually require, what the numbers looked like on a real biologics process, and where a team should start on Monday morning.
Topics covered:
Smart insight: The digital twin is the last step, not the first. Identify the bottleneck, build the simplest model that supports the decision, and concatenate it end to end so you can see how a parameter moves final drug substance quality rather than one unit operation's output. Prove the value offline. Only then connect interfaces, because that is where the cost and the validation burden live. Teams that lead with the twin arrive at the C-level with a proof of concept and no evidence. Teams that lead with the offline model arrive with a number.
Before a digital twin can earn its keep, you need connected data, the right model, and a clear decision for it to support. These four episodes cover that ground — data silos, hybrid and mechanistic modeling, and twins built to survive regulatory scrutiny.
Connect with Ignasi Bofarull-Manzano:
LinkedIn: www.linkedin.com/in/ignasi-bofarull
Körber Pharma website: www.koerber-pharma.com
Support the show
Most bioprocess teams believe a digital twin demands vast datasets and sophisticated models. Ignasi Bofarull-Manzano argues both assumptions are wrong, and that the data already sitting in your Excel files, historians and ELNs is probably enough to start.
Ignasi Bofarull-Manzano, Senior Data Scientist and CMC Consultant at Körber Pharma, breaks down what a digital twin actually is, where modeling pays back fastest across the product lifecycle, and how to tell a real business case from an expensive proof of concept.
In this episode:
Smart insight: Do not start with the model. Start with the bottleneck. Identify the business need first, then the decision the model must support, then the minimum data required for that context of use. Build the model offline, concatenate it end to end across unit operations rather than optimizing one in isolation, and prove the value before connecting a single interface. Teams that skip this sequence end up building models because models sound impressive, and those projects get expensive before they get useful.
Before a digital twin can earn its keep, you need connected data, the right model, and a clear decision for it to support. These four episodes cover that ground — data silos, hybrid and mechanistic modeling, and twins built to survive regulatory scrutiny.
Connect with Ignasi Bofarull-Manzano:
LinkedIn: www.linkedin.com/in/ignasi-bofarull
Körber Pharma website: www.koerber-pharma.com
Free 5-day email course, The CMC Failure Chain: the five recurring CMC mistakes that put your promising program at risk → Get it here
Support the show
How do you turn a lab-born regenerative medical device into a solution that surgeons actually want to use and investors want to back? The path from academic innovation to clinical adoption is full of practical hurdles and strategic pivots, where compelling science alone isn’t enough.
David Brühlmann welcomes back Eva-Maria Balet, whose journey spans tissue engineering research at EPFL to leading Regenosca through first-in-human trials, fundraising, and an executive MBA completed while running the company. This conversation covers the practical realities behind that journey, from quality control to clinical setbacks to investor pitches.
Topics discussed:
Smart insight: The transition from scientist to founder brought its own learning curve. Eva-Maria pursued an executive MBA while running Regenosca, and points to financial and business vocabulary as the skill she'd have built earlier if she could. For a technical founder or CMC lead, the lesson isn't to become a business generalist, it's that the moment you're translating a manufacturing process or clinical dataset into an investor pitch, fluency in the language of accounting, market strategy, and cost structure becomes as load-bearing as the science itself.
This week's episode with Eva-Maria Balet steps out of bioprocessing into MedTech, following a collagen scaffold from EPFL lab bench to first-in-human implant. These back-catalog picks cover similar ground: what it takes to win investor buy-in beyond the science, the discipline of turning a lab process into GMP manufacturing, why regulatory classification shapes a product's whole trajectory, and what it really takes to commercialize a lab discovery.
Connect with Eva-Maria Balet:
LinkedIn: www.linkedin.com/in/eva-maria-balet-72561737
Regenosca website: www.regenosca.com
Support the show
Imagine a wound too large for the body to close on its own. That's the problem Eva-Maria Balet set out to solve, not with living cells, but with a structural bridge that lets the body's own healing mechanisms do the rest.
In this episode, David Brühlmann welcomes Eva-Maria Balet, Co-Founder & CEO of Regenosca. Trained at EPFL, Eva-Maria brought her fascination with cellular "factories" from academia straight into entrepreneurship. Rather than chasing elegant science for its own sake, she built her company around a single principle: start with a real clinical need and build backward, collaborating with clinicians from day one so every experiment serves a patient.
Highlights & Topics:
Smart insight: Eva-Maria put it plainly: what works in the lab has to work reliably every single time you produce it for a patient. That shift, from proving a concept to controlling a process, from raw materials through in-process controls to final product testing, is the same discipline any CMC scientist recognizes: science alone doesn't get a product to patients. Reproducibility does.
This week's episode with Eva-Maria Balet steps out of bioprocessing into MedTech, following a collagen scaffold from EPFL lab bench to first-in-human implant. These back-catalog picks cover similar ground: what it takes to win investor buy-in beyond the science, the discipline of turning a lab process into GMP manufacturing, why regulatory classification shapes a product's whole trajectory, and what it really takes to commercialize a lab discovery.
Connect with Eva-Maria Balet:
LinkedIn: www.linkedin.com/in/eva-maria-balet-72561737
Regenosca website: www.regenosca.com
Support the show
Building a cell therapy company is hard. Building a genetically engineered iPSC therapy for the brain, on a preclinical budget, is one of the hardest translational problems in biotech. Every experiment has to move the program closer to an IND, or it's motion without progress.
That's the operating constraint Bilal Fares faces as CEO and co-founder of AzureCell, the University of Geneva spin-off engineering neuroprotective iPSC neurons for Parkinson's disease. In Part 2, he walks through how his team decides what to build, where AI and synthetic biology genuinely accelerate a CMC roadmap, and the four founder lessons he wishes he'd internalized earlier, including his conviction that scientists who use AI will replace those who don't.
Topics discussed include:
Smart insight: What separates successful biotech ventures from the rest? According to Bilal Fares, it is not just technical skill but mindset. First, choose a problem large enough to be worth the struggle. Second, try to “kill your solution as fast as possible”—engage experts, enter competitions, and seek brutal feedback early so you can pivot, improve, or abandon as needed. And finally, plan with the end (approval, patients, impact) always in sight.
If you enjoyed this, check out these episodes on cell therapy, where engineered cells can survive and do more than replace what's lost: Michael Rome's investor lens rounds it out for founders facing the same funding realities.
Connect with Bilal Fares:
LinkedIn: www.linkedin.com/in/b-fares
AzureCell website: www.azurecell.co
Email: [email protected]
Support the show
From the publisher's feed
The go-to CMC and biomanufacturing podcast for bioprocess development scientists and CMC leaders scaling biologics into regulatory-ready therapies with less trial and…
Practical, execution-focused, and strategic guidance on CMC development, tech transfer, scale-up, GMP readiness, CDMO partnerships, and manufacturing economics for biologics, cell and gene therapies, cultivated meat, and biomaterials.
Hosted by Dr. David Brühlmann, CMC strategist, former Bioprocess Innovation Manager at Merck, PhD in glycoengineering, and close to 20 years of biomanufacturing experience. Smart Biotech Scientist delivers actionable insights for the people doing the hard work of turning promising molecules into scalable, regulatory-ready therapies.
This podcast is for you if:
What you will learn:
CMC strategy and regulatory planning, bioprocess scale-up from lab to clinical and commercial manufacturing, cell culture process development and media optimization, technology transfer best practices, CDMO selection and partnership management, hybrid modeling, manufacturing economics, continuous manufacturing, digitization, and Industry 4.0 in biopharma.
Top 10 life sciences podcast with 200+ episodes and guests from Merck, FUJIFILM Irvine Scientific, Cytiva, KBI Biopharma, Eppendorf, and biotech innovators worldwide.
New episodes released weekly. Subscribe and join 400+ biotech leaders already using these insights to accelerate development, reduce manufacturing costs, and de-risk scale-up.
Next Steps:
Get the 5-day CMC email course: https://smartbiotechscientist.com/#cmc
Visit the website: https://smartbiotechscientist.com
Email us: [email protected]

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