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Bio-Techne, Refeyn Partner on Workflow for Bispecific Antibody, Biosimilar Characterization
This week, Bio-Techne, a provider of life science tools, reagents, and diagnostic product, and Refeyn, a pioneer in mass photometry technology, announced the launch of an integrated workflow for characterizing charge and size variants in bispecific antibodies and biosimilars.
The workflow combines Bio-Techne’s R&D Systems MauriceFlex
imaged capillary isoelectric focusing (icIEF) fractionation system with Refeyn’s TwoMP mass photometry platform. The combined solution makes it possible for researchers to directly correlate charge heterogeneity with molecular weight and aggregation at single‑molecule resolution in four hours.
“Bispecifics are the fastest growing segment within next‑generation antibodies, but they are very difficult to characterize,” said Gerry Mackay, CEO of Refeyn. That difficulty is due to the structural complexity of these molecules. Incomplete characterization can delay development, increase manufacturing risks, and lead to costly late-stage failures. “This approach directly addresses one of the biggest challenges by combining icIEF fractionation with mass photometry. Researchers can now interrogate charge and size variants together in a single workflow,” he said.
Within the workflow, charge variants are first separated using the MauriceFlex system. They are then analyzed on Refeyn’s TwoMP platform. The system requires a nanogram‑level sample and reveals size distribution and aggregation at single‑molecule resolution.
Together, the technologies enable direct characterization of aggregation and size within icIEF-resolved charge variants, something which is not accessible with standalone methods. It reduces reliance on multiple tests and supports faster, more efficient process development.
These capabilities are a boon for customers, according to Will Geist, president of Bio‑Techne’s Protein Sciences Segment. “Enabling deeper characterization with less sample helps them reduce risk, control costs, and make better decisions earlier in development.”
The post Bio-Techne, Refeyn Partner on Workflow for Bispecific Antibody, Biosimilar Characterization appeared first on GEN – Genetic Engineering and Biotechnology News.
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New webinar: Tackling drug discovery challenges in cancer research

Hosted by Drug Discovery World and supported by Sartorius and BioIVT, this webinar will explore the opportunities and challenges that exist within cancer research drug discovery and development.
You will hear from Dr Sudha Rao, Chief Scientific Officer of Kazia Therapeutics, Karol Budzik, PhD, Business Development Associate at Vyriad Therapeutics and Lars van der Veen, Chief Scientific Officer at iOnctura.
Presentations will cover how cancer treatments have shifted towards reprogramming the biology driving tumour growth, immune escape and treatment resistance, the trajectory that in vivo CAR-T treatments are taking, and how challenging tumours burdened by stroma and immune-mediated resistance can be tackled.
Q&A with the speakers follows the presentations.
The post New webinar: Tackling drug discovery challenges in cancer research appeared first on Drug Discovery World (DDW).
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Psilocybin proves promising in neuropathic pain mouse study
Amid the rise of psychedelics in the mental health space, researchers have begun to explore psilocybin as a treatment for chemotherapy-induced peripheral neuropathy.
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New Spectrometry Technique Could Aid Formulation Development
New Spectrometry Technique Could Aid Formulation Development
A new technique combining two forms of spectrometry could help biopharmaceutical companies improve their choice of formulation buffer for antibody manufacturing by revealing how molecular forms and three-dimensional shapes of complex biologics respond to their environment. That’s the view of Christian Bleiholder, PhD, a professor at Florida State University who helped develop the technique.
According to Bleiholder, what happens structurally when a complex biological molecule, such as an antibody or viral spike protein, binds to its target is currently poorly understood.
“This is where [this approach] can help with the bioprocessing and formulation,” he says, as structural changes “can affect the lifespan [of the product] and lead to issues, such as aggregation.”
Because antibodies are complex, existing techniques tend to be powerful at different levels of complexity, he explains. Mass spectrometry is particularly powerful for distinguishing molecular composition, while structural approaches such as X-ray crystallography and cryo-electron microscopy can provide high-resolution structural information.
The challenge is understanding the link between these things within a heterogeneous sample, he says.
To overcome this, Bleiholder and his team worked with Bruker Daltonics to develop Tandem-Trapped Ion Mobility Spectrometry (Tandem-TIMS). This combines tandem ion mobility spectrometry with tandem mass spectrometry to disentangle three overlapping layers of molecular complexity: molecular form, three-dimensional shape, and binding or assembly state, he says.
He explains that, if the proteins have different structures, they can be characterized with tandem ion mobility spectrometry, and then mass spectrometry can be used to look at their molecular forms and binding states.
Going forward, Bleiholder hopes the technique can be used for formulation development but also earlier, during drug discovery of new products, such as multi-specific antibodies, to determine which molecular states are important and how those change when a biologic engages its target. He also plans to look at automating the technique.
Bleiholder spoke about using Tandem-TIMS at the Bioprocessing Summit in Boston earlier this year.
The post New Spectrometry Technique Could Aid Formulation Development appeared first on GEN – Genetic Engineering and Biotechnology News.
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