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Tumor Microenvironment Targeting Nano–Bio Emulsion for Synergistic Combinational X-Ray PDT with Oncolytic Bacteria Therapy

Journal Article · · Advanced Healthcare Materials
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8]
  1. Northwestern University, Chicago, IL (United States); The Catholic University of Korea, Gyeonggi (South Korea)
  2. Northwestern University, Chicago, IL (United States)
  3. Korea Institute of Science and Technology (KIST), Seoul (South Korea)
  4. The Catholic University of Korea, Gyeonggi (South Korea)
  5. Biomedical Engineering Research Center, Seoul (South Korea)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Korea Institute of Science and Technology (KIST), Seoul (South Korea); Hanyang Unic., Seoul (South Korea)
  8. Northwestern University, Chicago, IL (United States); Robert H. Lurie Comprehensive Cancer Center, Chicago, IL (United States); McCormick School of Engineering, Evanston, IL (United States)

Various cancer therapies have been developed, but tumor recurrence with incomplete tumor killing and remaining tumor cells/tissues is frequent in monotherapies. Herein, a nano–bio therapeutic emulsion formulated with multifunctional nanoscintillators and anaerobic Clostridium novyi-NT spores for synergistic image-guided combinational cancer therapy is reported. MRI visible nanoscintillators (NSs) are synthesized with a NaGdF4:Tb,Ce@NaGdF4 core/shell structure for an image-guided X-ray photodynamic therapy (PDT) of the normoxic peripheral tumor. An anaerobic oncolytic bacterium (C. novyi-NT) therapy is combined to treat the hypoxic central tumor tissues. Photosensitizer-coated NSs (PS-NSs) and C. novyi-NT spores are emulsified with clinically available ethiodized oil (Lipiodol) to be the nano–bio therapeutic emulsion and injected into the tumor with computed tomography image guidance. The distribution of nano–bio therapeutic emulsion, including PS-NSs and anaerobic C. novyi-NT spores in the tumor site, is confirmed by both X-ray and T1-weighted magnetic resonance imaging. Following the image-guided X-ray PDT and anaerobic C. novyi- NT combination treatment, apoptotic cell death in cancer tissues, including both peripheral and central tumor regions, is significantly higher than in the control groups. Finally, this combination therapy approach using a nano–bio therapeutic emulsion is expected to overcome the limitations of conventional cancer therapy, resulting in increased cancer-therapeutic efficacy.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE; National Institutes of Health (NIH); Korea Institute of Science and Technology (KIST)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1774585
Journal Information:
Advanced Healthcare Materials, Journal Name: Advanced Healthcare Materials Journal Issue: 13 Vol. 9; ISSN 2192-2640
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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