John Garner

PLGA from PolySciTech used for generating dopamine-Mn coated theranostic nanoparticles for use in cancer treatment

Blog Post created by John Garner on May 9, 2017

Chemotherapy is the primary means of treating cancer however the currently available regimens suffer from significant side-effects and related toxicity due to the non-specific nature of this approach which damages both tumors as well as normal tissues. Combination therapies have been developed as a means for dealing with this by providing for a more targeted approach to cancer treatment in which the tumor is affected by the medicine to a greater degree than healthy tissues. Recently, PLGA from PolySciTech ( (PolyVivo cat# AP040) was utilized to generate a doxorubicin loaded nanoparticle coated with dopamine and manganese. These particles serve both as magnetic resonance contrast agent and as a photothermal-triggered delivery system. This research holds promise for improved treatment of a wide array of cancers. Read more: Xi, Juqun, Lanyue Da, Changshui Yang, Rui Chen, Lizeng Gao, Lei Fan, and Jie Han. "Mn2+-coordinated PDa@ DOX/Plga nanoparticles as a smart theranostic agent for synergistic chemo-photothermal tumor therapy." International Journal of Nanomedicine 12 (2017): 3331.


  “Abstract: Nanoparticle drug delivery carriers, which can implement high performances of multi-functions, are of great interest, especially for improving cancer therapy. Herein, we reported a new approach to construct Mn2+-coordinated doxorubicin (DOX)-loaded poly(lactic-co-glycolic acid) (PLGA) nanoparticles as a platform for synergistic chemo-photothermal tumor therapy. DOX-loaded PLGA (DOX/PLGA) nanoparticles were first synthesized through a double emulsion-solvent evaporation method, and then modified with polydopamine (PDA) through self-polymerization of dopamine, leading to the formation of PDA@DOX/PLGA nanoparticles. Mn2+ ions were then coordinated on the surfaces of PDA@DOX/PLGA to obtain Mn2+-PDA@DOX/PLGA nanoparticles. In our system, Mn2+-PDA@DOX/PLGA nanoparticles could destroy tumors in a mouse model directly, by thermal energy deposition, and could also simulate the chemotherapy by thermal-responsive delivery of DOX to enhance tumor therapy. Furthermore, the coordination of Mn2+ could afford the high magnetic resonance (MR) imaging capability with sensitivity to temperature and pH. The results demonstrated that Mn2+-PDA@ DOX/PLGA nanoparticles had a great potential as a smart theranostic agent due to their imaging and tumor-growth-inhibition properties. Keywords: PLGA nanoparticles, polydopamine, chemo-photothermal therapy, smart theranostic agent”

Xi, 2017 PLGA-Mn-doxorubicin nanoparticles PolyVivo AP040.png