New Standard for Exosome Isolation: Tanfil 100 Tangential Flow Filtration System

In biomedical research, extracellular vesicles (EVs)—especially exosomes—have become a key focus due to their role in intercellular communication. 

These nano-sized lipid-bilayer vesicles (30–150 nm), secreted by nearly all cell types, transport proteins, lipids, and nucleic acids, positioning them as valuable tools for diagnostics and therapeutics. However, their small size and low abundance in biological fluids make conventional methods for isolation and purification challenging.  Ultracentrifugation is labor-intensive, costly, and can damage exosome structure under high centrifugal forces, while precipitation and size-exclusion chromatography often produce low-purity samples contaminated with proteins and other non-exosomal particles. 

Recognizing these challenges, ROCKER Scientific has pioneered a solution that is setting a new benchmark for efficiency and purity in exosome research with the Tanfil 100 Tangential Flow Filtration (TFF) System. 

TFF

The Tanfil 100 operates on the principle of Tangential Flow Filtration (TFF), a gentle yet effective technique that overcomes the limitations of traditional methods. Unlike dead-end filtration, where perpendicular sample flow leads to filter clogging, TFF circulates the sample tangentially across the membrane surface. This continuous flow prevents the buildup of particles and fouling, allowing for high-throughput processing with exceptional efficiency and minimal membrane clogging. 

The Tanfil 100 system directs the sample flow in a loop, where exosomes are retained by a specialized hollow fiber membrane while smaller impurities are passed through. The key advantages of this approach include: 

  • Concentration and diafiltration in one run, reducing processing steps
  • Parallel flow across the membrane that minimizes fouling and preserves vesicle integrity
  • Easy scale-up from bench to production scale
  • Gentle operation, avoiding shear damage common in other separation methods 

While the Tanfil 100 is an unparalleled tool for exosome isolation, its utility extends far beyond. Exosomes themselves have great significance for both basic science and the medical field. The study of exosomes, particularly with a reliable isolation method, allows researchers to explore critical areas such as: 

  • Cell-to-Cell Communication and Disease Mechanisms: Exosomes act as "messengers," containing biomolecules that can affect the functions of other cells. By understanding their isolation, researchers can study the mechanism of cell-to-cell message transmission and reveal the development of many diseases.
  • Drug Delivery: Exosomes are considered excellent carriers for transporting bioactive substances to target cells. They can be used for regulation in processes such as tissue repair, immune regulation, angiogenesis, cellular differentiation, and neoplasia.
  • Disease Diagnosis and Treatment: Exosomes are being explored for their potential in disease diagnosis, for example, as biomarkers for tumor diagnosis, and in cancer treatment as drug carriers. 

Reference:

Exosome Isolation : A Guide to EVs Research