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Rauta PR, Mackeyev Y, Sanders K, Kim JB, Gonzalez VV, Zahra Y, Shohayeb MA, Abousaida B, Vijay GV, Tezcan O, Derry P, Liopo AV, Zubarev ER, Carter R, Singh P, Krishnan S. Pancreatic tumor microenvironmental acidosis and hypoxia transform gold nanorods into cell-penetrant particles for potent radiosensitization. SCIENCE ADVANCES 2022; 8:eabm9729. [PMID: 36367938 PMCID: PMC9651859 DOI: 10.1126/sciadv.abm9729] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
Coating nanoparticles with stealth epilayers increases circulation time by evading opsonization, macrophage phagocytosis, and reticuloendothelial sequestration. However, this also reduces internalization by cancer cells upon reaching the tumor. We designed gold nanorods (GNRs) with an epilayer that retains stealth properties in circulation but transforms spontaneously in the acidotic tumor microenvironment to a cell-penetrating particle. We used a customized stoichiometric ratio of l-glutamic acid and l-lysine within an amphiphilic polymer of poly(l-glutamic acid-co-l-lysine), or P(Glu-co-Lys), to effect this transformation in acidotic environments. P(Glu-co-Lys)-GNRs were internalized by cancer cells to facilitate potent in vitro radiosensitization. When administered intravenously in mice, they accumulate in the periphery and core of tumors without any signs of serum biochemical or hematological alterations, normal organ histopathological abnormalities, or overt deterioration in animal health. Furthermore, P(Glu-co-Lys)-GNRs penetrated the tumor microenvironment to accumulate in the hypoxic cores of tumors to potently radiosensitize heterotopic and orthotopic pancreatic cancers in vivo.
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Affiliation(s)
| | - Yuri Mackeyev
- Vivian L. Smith Department of Neurosurgery, UTHealth, Houston, TX, USA
| | - Keith Sanders
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX, USA
| | - Joseph B.K. Kim
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX, USA
| | | | - Yasmin Zahra
- Vivian L. Smith Department of Neurosurgery, UTHealth, Houston, TX, USA
| | | | - Belal Abousaida
- Vivian L. Smith Department of Neurosurgery, UTHealth, Houston, TX, USA
| | | | - Okan Tezcan
- Vivian L. Smith Department of Neurosurgery, UTHealth, Houston, TX, USA
| | - Paul Derry
- Department of Chemistry, Rice University, Houston, TX, USA
| | - Anton V. Liopo
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX, USA
| | | | - Rickey Carter
- Department of Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, USA
| | - Pankaj Singh
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX, USA
| | - Sunil Krishnan
- Vivian L. Smith Department of Neurosurgery, UTHealth, Houston, TX, USA
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Marples B, Kerns S. Oncology Scan: Radiation Biology and Genomic Predictors of Response. Int J Radiat Oncol Biol Phys 2020; 107:393-397. [PMID: 32531379 DOI: 10.1016/j.ijrobp.2020.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Brian Marples
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York.
| | - Sarah Kerns
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York
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Pathak RK, Basu U, Ahmad A, Sarkar S, Kumar A, Surnar B, Ansari S, Wilczek K, Ivan ME, Marples B, Kolishetti N, Dhar S. A designer bow-tie combination therapeutic platform: An approach to resistant cancer treatment by simultaneous delivery of cytotoxic and anti-inflammatory agents and radiation. Biomaterials 2018; 187:117-129. [DOI: 10.1016/j.biomaterials.2018.08.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 12/20/2022]
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4
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Brown JMC, Hanna GG, Lampe N, Villagomez-Bernabe B, Nicol JR, Coulter JA, Currell FJ. Towards photon radiotherapy treatment planning with high Z nanoparticle radiosensitisation agents: the Relative Biological Effective Dose (RBED) framework. Cancer Nanotechnol 2018; 9:9. [PMID: 30524511 PMCID: PMC6244633 DOI: 10.1186/s12645-018-0043-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/30/2018] [Indexed: 12/15/2022] Open
Abstract
A novel treatment planning framework, the Relative Biological Effective Dose (RBED), for high Z nanoparticle (NP)-enhanced photon radiotherapy is developed and tested in silico for the medical exemplar of neoadjuvant (preoperative) breast cancer MV photon radiotherapy. Two different treatment scenarios, conventional and high Z NP enhanced, were explored with a custom Geant4 application that was developed to emulate the administration of a single 2 Gy fraction as part of a 50 Gy radiotherapy treatment plan. It was illustrated that there was less than a 1% difference in the dose deposition throughout the standard and high Z NP-doped adult female phantom. Application of the RBED framework found that the extent of possible biological response with high Z NP doping was great than expected via the dose deposition alone. It is anticipated that this framework will assist the scientific community in future high Z NP-enhanced in-silico, pre-clinical and clinical trials.
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Affiliation(s)
- Jeremy M C Brown
- 1School of Mathematics and Physics, Queen's University Belfast, Belfast, Northern Ireland UK.,2Department of Radiation Science and Technology, Delft University of Technology, Delft, The Netherlands.,3Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia
| | - Gerard G Hanna
- 4School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, Northern Ireland UK
| | - Nathanael Lampe
- 5Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
| | | | - James R Nicol
- 6School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland UK
| | - Jonathan A Coulter
- 6School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland UK
| | - Fred J Currell
- 1School of Mathematics and Physics, Queen's University Belfast, Belfast, Northern Ireland UK
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