Cell Guidance Systems Blog

PODS: Polyhedrin and sustained release

PODS:  Polyhedrin and sustained release

How polyhedrin functions as a viral survival strategy, and how the PODS (Polyhedrin Delivery System) mechanism harnesses polyhedrin's crystalline architecture to encapsulate growth factors and control their release over days to weeks.

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TFF for EVs: Getting the Parameters Right

TFF for EVs: Getting the Parameters Right

This article examines each of the major parameters governing a TFF-based EV isolation run: membrane format and molecular weight cut-off selection, transmembrane pressure, cross-flow velocity, concentration factor, diafiltration strategy, temperature and hold time. It also covers process monitoring and the role of SEC polishing as a downstream step following TFF.

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EV or not EV? That is the question

EV or not EV? That is the question

Not all extracellular vesicles are the same. Learn how exosomes, microvesicles and apoptotic bodies differ in size, biogenesis and cargo, and why the distinction matters for reproducible EV research.

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MSC-Derived Exosomes in Regenerative Medicine

MSC-Derived Exosomes in Regenerative Medicine

MSC-derived exosomes (and other extracellular vesicles) have become one of the most actively investigated modalities in regenerative medicine, with peer-reviewed evidence spanning cardiac repair, neural regeneration, wound healing, bone and cartilage restoration, and acute organ injury. This article reviews the biological basis of MSC exosome activity, the therapeutic evidence across key disease areas, the manufacturing and isolation considerations that determine product quality, and the tools available to researchers establishing MSC exosome programmes.

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Hidden talents: Cancer diagnostic EVs

Hidden talents: Cancer diagnostic EVs

Early diagnosis of cancer is critical to treatment outcome. Cancer cells are revealing themselves, secreting vast numbers of extracellular vesicles into the blood. The race is on to identify these hallmarks of cancer with the target of simple mass testing to catch the disease early.

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Isolating EVs at Scale: A Guide to Tangential Flow Filtration

Isolating EVs at Scale: A Guide to Tangential Flow Filtration

Tangential flow filtration (aka Cross flow filtrati is the method of choice when sample volume, yield and scalability are the primary requirements. It is the only isolation approach that can process litre-scale conditioned media volumes in a single continuous run without filter fouling, and it simultaneously concentrates EVs to a small, analytically ready output volume.

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