Folic Acid-Decorated Nanoparticles Show Promise in Tumor-Targeted MRI and Chemotherapy

Strategic Insights -

Scientists at the South China University of Technology have developed a novel folic acid-decorated nanoparticle that combines therapeutic and diagnostic capabilities, making it a potential theranostic nanocarrier for tumor-targeted MRI and chemotherapy. The researchers created the nanoparticles by conjugating folic acid to a star polymer made from poly(e-caprolactone) and dextran, which is linked by disulfide bonds. These nanoparticles demonstrated efficient delivery of doxorubicin and superparamagnetic iron oxide into HepG2 cells, showing strong MRI contrast enhancement properties and releasing 100% of the drug within 24 hours under a reducing environment.

Key Takeaways:

  • A new folic acid-decorated nanoparticle was synthesized via a coupling reaction between CD-based 14 arms poly(e-caprolactone) and disulfide-containing a-alkyne dextran.
  • The nanoparticle, ((FA-Dex-SS)-CD-(PCL)@DOX-SPIO), was designed for tumor-targeted MRI and chemotherapy, with approximately 100% of the doxorubicin released within 24 hours under a reducing environment.
  • The presence of disulfide bonds in the star polymer allowed for glutathione-mediated cleavage, which facilitated the delivery of doxorubicin and superparamagnetic iron oxide into HepG2 cells through folate receptor-mediated endocytosis.
  • The nanoparticles demonstrated strong MRI contrast enhancement properties, making them a potential theranostic nanocarrier for tumor-targeted MRI and chemotherapy.
  • The research was conducted at the South China University of Technology, with authors including Nianhua Wang, Huikang Yang, Ruimeng Yang, Liming Zhang, and Xinqing Jiang.
  • The study was published in Pharmaceutics, a journal containing the research, and may be accessed through the Journal's contact information provided.

Statistics:

  • 100% of the doxorubicin was released from the disulfide bond-linked theranostic nanoparticles within 24 hours under a reducing environment in the presence of 10.0 mM GSH.
  • The nanoparticles showed strong MRI contrast enhancement properties.
  • The presence of disulfide bonds facilitated the delivery of doxorubicin and superparamagnetic iron oxide into HepG2 cells through folate receptor-mediated endocytosis.

Sources:

  • Folic Acid-Decorated b-Cyclodextrin-Based Poly(e-caprolactone)-dextran Star Polymer with Disulfide Bond-Linker as Theranostic Nanoparticle for Tumor-Targeted MRI and Chemotherapy. Pharmaceutics, 2021;14(1):52.
  • Mdpi, St Alban-Anlage 66, Ch-4052 Basel, Switzerland (Publisher's contact information for the journal Pharmaceutics)
  • Nianhua Wang, Dept. of Radiology, Second Affiliated Hospital, School of Medicine, South China University of Technology, Yuexiu District, Guangzhou 510640, People's Republic of China (Contact information for the researcher)