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Nanoscale drug carrier systems
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Nanoscale drug carrier systems

Nanoscale drug carrier systems as therapeutics for targeted tumor therapy

Contact person: Ajmal Zarinwall

Project description:
The treatment of inoperable tumors on the basis of nanoscale drug carrier systems represents a promising alternative to currently established therapeutic methods such as chemotherapy. Targeted local applications of cytosolic therapeutics are made possible by the use of functionalized nanoparticles. However, only a very small part of the nanosystems is released from the endosomes after cellular uptake, while the majority is degraded lysosomally or ejected from the cell as part of a “recycling process” (A). Therefore, high systemic doses are required, which are associated with serious side effects. However, this natural barrier can be overcome by introducing a further component into the particle system, an endosomal escape enhancer (EnEsEn), and thus drastically reducing the necessary dose through a considerable increase in efficiency (B).

Within the framework of this project:

  • selectively functionalizes the surfaces of nanoparticles with therapeutic agents
  • cytotoxicity studies of the drug carrier systems performed
  • different formulation strategies to standardize the pharmacokinetics of the individual components

 

 

Nanomedizin - Zelluläre Aufnahme von nanopartikulärbasierten Tumortherapeutika und deren Ausschleusung aus der Zelle

Figure 1: Cellular uptake of nanoparticulate based tumor therapeutics and their ejection from the cell (A), or the overcoming of this by the use of a multi-component system, which results in apoptotic cell death by inactivation of the ribosomes. The carrier system is superparamagnetic iron oxide nanoparticles (SPION).

 

Project partners:
Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie (Charité – Universitätsmedizin Berlin)

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