PhD Theses

Yajie Zhang will defend his PhD Thesis on 15 September at 11 am!

The PhD Researcher Yajie Zhang from the Nanoparticles & Nanocomposites (NN) Group at ICMAB will defend his PhD thesis on Tuesday, 15 September 2020, at 11 am at the ICMAB. The PhD Thesis Defense will be by videoconference from the ICMAB Meeting Room. Register here to attend the PhD Thesis defense via Zoom. 
Anna
Sep 1, 2020

Multimodal Imaging PLGA Nanocapsules as Protein Carrier for Potential Neurorepair in Ischemic Brain

by Yajie Zhang, Nanoparticles & Nanocomposites Group

Date: Tuesday, 15 September 2020
Time: 11 am
Venue: ICMAB - Meeting Room (VIDEOCONFERENCE). Register here to attend the PhD Thesis defense via Zoom. 

Abstract: Advancements in nanoparticulated systems capable of providing the necessary functionalities to new nanomedicines and offering the possibility to combine non-invasive disease detection with individualized treatments are facilitating personalized medicine to become a reality. Besides, the progress in theranostics is shaping the development of image-guided drug delivery improving the efficiency of pharmaceuticals by visualizing their biodistributions, effects on specific molecular and cellular targets, and the corresponding therapeutic effects. This thesis is devoted to engineering theranostic magnetic nano-biomaterials to address neurorepair in the context of an ischemic stroke by enhancing local angiogenesis.

Growth factors secreted by endothelial progenitor cells (EPCs-secretome), with proved potential to induce angiogenesis, were encapsulated into magnetic poly(D,L lactic co glycolic acid) (PLGA) nanocapsules. Additionally, this PLGA-drug delivery system was functionalized with versatile imaging reporters allowing magnetic retention and in vitro/in vivo product tracking. The main accomplished objectives of the thesis are: 1) optimization of PLGA nanocapsules for magnetically targeted delivery and controlled encapsulation and release of proteins, 2) modular functionalization of PLGA nanocapsules with versatile imaging reporters: magnetic resonance imaging, fluorescence at four different wavelengths and positron emission tomography and 3) improved approaches to enhance mice brain accumulation of the nanocapsules and to increase EPCs-secretome loading.

Supervisors:

  • Anna Roig, Nanoparticles & Nanocomposites Group, ICMAB
  • Anna Rosell, Neurovascular Research Laboratory, Vall d'Hebron Research Institute (VHIR)

PhD Committee:

  • President: Antonio Villaverde Corrales, Institut de Biotecnologia i de Biomedicina, UAB, Spain
  • Secretary: Aitziber López Cortajarena, CIC biomaGUNE, Spain
  • Vocal: Dagmar Fischer, Friedrich Schiller Universitäty Jena, Germany

yajie scientific

Figure: Magnetic PLGA nanocapsules with growth factors inside as drug delivery systems to treat ischemic stroke by enhancing local angiogenesis.

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