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Fromain A, Perez JE, Van de Walle A, Lalatonne Y, Wilhelm C. Photothermia at the nanoscale induces ferroptosis via nanoparticle degradation. Nat Commun 2023; 14:4637. [PMID: 37532698 PMCID: PMC10397343 DOI: 10.1038/s41467-023-40258-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023] Open
Abstract
The Fe(II)-induced ferroptotic cell death pathway is an asset in cancer therapy, yet it calls into question the biocompatibility of magnetic nanoparticles. In the latter, Fe(II) is sequestered within the crystal structure and is released only upon nanoparticle degradation, a transition that is not well understood. Here, we dissect the chemical environment necessary for nanoparticle degradation and subsequent Fe(II) release. Importantly, temperature acts as an accelerator of the process and can be triggered remotely by laser-mediated photothermal conversion, as evidenced by the loss of the nanoparticles' magnetic fingerprint. Remarkably, the local hot-spot temperature generated at the nanoscale can be measured in operando, in the vicinity of each nanoparticle, by comparing the photothermal-induced nanoparticle degradation patterns with those of global heating. Further, remote photothermal irradiation accelerates degradation inside cancer cells in a tumor spheroid model, with efficiency correlating with the endocytosis progression state of the nanoparticles. High-throughput imaging quantification of Fe2+ release, ROS generation, lipid peroxidation and cell death at the spheroid level confirm the synergistic thermo-ferroptotic therapy due to the photothermal degradation at the nanoparticle level.
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Affiliation(s)
- Alexandre Fromain
- Laboratoire Physico Chimie Curie, PCC, CNRS UMR168, Institut Curie, Sorbonne University, PSL University, 75005, Paris, France
| | - Jose Efrain Perez
- Laboratoire Physico Chimie Curie, PCC, CNRS UMR168, Institut Curie, Sorbonne University, PSL University, 75005, Paris, France
| | - Aurore Van de Walle
- Laboratoire Physico Chimie Curie, PCC, CNRS UMR168, Institut Curie, Sorbonne University, PSL University, 75005, Paris, France
| | - Yoann Lalatonne
- Université Sorbonne Paris Nord, Université Paris Cité, Laboratory for Vascular Translational Science, LVTS, INSERM, UMR 1148, F‑ 93017, Bobigny, France
- Département de Biophysique et de Médecine Nucléaire, Assistance Publique-Hôpitaux de Paris, Hôpital Avicenne, F‑ 93009, Bobigny, France
| | - Claire Wilhelm
- Laboratoire Physico Chimie Curie, PCC, CNRS UMR168, Institut Curie, Sorbonne University, PSL University, 75005, Paris, France.
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2
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Beola L, Asín L, Roma-Rodrigues C, Fernández-Afonso Y, Fratila RM, Serantes D, Ruta S, Chantrell RW, Fernandes AR, Baptista PV, de la Fuente JM, Grazú V, Gutiérrez L. The Intracellular Number of Magnetic Nanoparticles Modulates the Apoptotic Death Pathway after Magnetic Hyperthermia Treatment. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43474-43487. [PMID: 32870658 DOI: 10.1021/acsami.0c12900] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Magnetic hyperthermia is a cancer treatment based on the exposure of magnetic nanoparticles to an alternating magnetic field in order to generate local heat. In this work, 3D cell culture models were prepared to observe the effect that a different number of internalized particles had on the mechanisms of cell death triggered upon the magnetic hyperthermia treatment. Macrophages were selected by their high capacity to uptake nanoparticles. Intracellular nanoparticle concentrations up to 7.5 pg Fe/cell were measured both by elemental analysis and magnetic characterization techniques. Cell viability after the magnetic hyperthermia treatment was decreased to <25% for intracellular iron contents above 1 pg per cell. Theoretical calculations of the intracellular thermal effects that occurred during the alternating magnetic field application indicated a very low increase in the global cell temperature. Different apoptotic routes were triggered depending on the number of internalized particles. At low intracellular magnetic nanoparticle amounts (below 1 pg Fe/cell), the intrinsic route was the main mechanism to induce apoptosis, as observed by the high Bax/Bcl-2 mRNA ratio and low caspase-8 activity. In contrast, at higher concentrations of internalized magnetic nanoparticles (1-7.5 pg Fe/cell), the extrinsic route was observed through the increased activity of caspase-8. Nevertheless, both mechanisms may coexist at intermediate iron concentrations. Knowledge on the different mechanisms of cell death triggered after the magnetic hyperthermia treatment is fundamental to understand the biological events activated by this procedure and their role in its effectiveness.
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Affiliation(s)
- Lilianne Beola
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Laura Asín
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Catarina Roma-Rodrigues
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Yilian Fernández-Afonso
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Raluca M Fratila
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - David Serantes
- Applied Physics Department and Instituto de Investigacións Tecnolóxicas, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Sergiu Ruta
- Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom
| | - Roy W Chantrell
- Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom
| | - Alexandra R Fernandes
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Pedro V Baptista
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Jesús M de la Fuente
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Valeria Grazú
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Lucía Gutiérrez
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
- Department of Analytical Chemistry, Universidad de Zaragoza, Edificio I+D, 50018 Zaragoza, Spain
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3
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Ma Y, Centola M, Keppner D, Famulok M. Interlocked DNA Nanojoints for Reversible Thermal Sensing. Angew Chem Int Ed Engl 2020; 59:12455-12459. [PMID: 32567796 PMCID: PMC7384075 DOI: 10.1002/anie.202003991] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/12/2020] [Indexed: 01/12/2023]
Abstract
The ability to precisely measure and monitor temperature at high resolution at the nanoscale is an important task for better understanding the thermodynamic properties of functional entities at the nanoscale in complex systems, or at the level of a single cell. However, the development of high-resolution and robust thermal nanosensors is challenging. The design, assembly, and characterization of a group of thermal-responsive deoxyribonucleic acid (DNA) joints, consisting of two interlocked double-stranded DNA (dsDNA) rings, is described. The DNA nanojoints reversibly switch between the static and mobile state at different temperatures without a special annealing process. The temperature response range of the DNA nanojoint can be easily tuned by changing the length or the sequence of the hybridized region in its structure, and because of its interlocked structure the temperature response range of the DNA nanojoint is largely unaffected by its own concentration; this contrasts with systems that consist of separated components.
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Affiliation(s)
- Yinzhou Ma
- LIMES Chemical Biology UnitUniversität BonnGerhard-Domagk-Straße 153121BonnGermany
| | - Mathias Centola
- LIMES Chemical Biology UnitUniversität BonnGerhard-Domagk-Straße 153121BonnGermany
- Center of Advanced European Studies and ResearchLudwig-Erhard-Allee 253175BonnGermany
| | - Daniel Keppner
- LIMES Chemical Biology UnitUniversität BonnGerhard-Domagk-Straße 153121BonnGermany
| | - Michael Famulok
- LIMES Chemical Biology UnitUniversität BonnGerhard-Domagk-Straße 153121BonnGermany
- Center of Advanced European Studies and ResearchLudwig-Erhard-Allee 253175BonnGermany
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4
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Ma Y, Centola M, Keppner D, Famulok M. Interlocked DNA Nanojoints for Reversible Thermal Sensing. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yinzhou Ma
- LIMES Chemical Biology Unit Universität Bonn Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Mathias Centola
- LIMES Chemical Biology Unit Universität Bonn Gerhard-Domagk-Straße 1 53121 Bonn Germany
- Center of Advanced European Studies and Research Ludwig-Erhard-Allee 2 53175 Bonn Germany
| | - Daniel Keppner
- LIMES Chemical Biology Unit Universität Bonn Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Michael Famulok
- LIMES Chemical Biology Unit Universität Bonn Gerhard-Domagk-Straße 1 53121 Bonn Germany
- Center of Advanced European Studies and Research Ludwig-Erhard-Allee 2 53175 Bonn Germany
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5
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Mertz D, Sandre O, Bégin-Colin S. Drug releasing nanoplatforms activated by alternating magnetic fields. Biochim Biophys Acta Gen Subj 2017; 1861:1617-1641. [PMID: 28238734 DOI: 10.1016/j.bbagen.2017.02.025] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 02/05/2023]
Abstract
The use of an alternating magnetic field (AMF) to generate non-invasively and spatially a localized heating from a magnetic nano-mediator has become very popular these last years to develop magnetic hyperthermia (MH) as a promising therapeutic modality already used in the clinics. AMF has become highly attractive this last decade over others radiations, as AMF allows a deeper penetration in the body and a less harmful ionizing effect. In addition to pure MH which induces tumor cell death through local T elevation, this AMF-generated magneto-thermal effect can also be exploited as a relevant external stimulus to trigger a drug release from drug-loaded magnetic nanocarriers, temporally and spatially. This review article is focused especially on this concept of AMF induced drug release, possibly combined with MH. The design of such magnetically responsive drug delivery nanoplatforms requires two key and complementary components: a magnetic mediator which collects and turns the magnetic energy into local heat, and a thermoresponsive carrier ensuring thermo-induced drug release, as a consequence of magnetic stimulus. A wide panel of magnetic nanomaterials/chemistries and processes are currently developed to achieve such nanoplatforms. This review article presents a broad overview about the fundamental concepts of drug releasing nanoplatforms activated by AMF, their formulations, and their efficiency in vitro and in vivo. This article is part of a Special Issue entitled "Recent Advances in Bionanomaterials" Guest Editors: Dr. Marie-Louise Saboungi and Dr. Samuel D. Bader.
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Affiliation(s)
- Damien Mertz
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS, Université de Strasbourg, 23, rue du Loess, 67034 Strasbourg, France.
| | - Olivier Sandre
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, Université de Bordeaux, Bordeaux-INP, Pessac 33607, Cedex, France
| | - Sylvie Bégin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS, Université de Strasbourg, 23, rue du Loess, 67034 Strasbourg, France
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6
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Munoz-Menendez C, Serantes D, Ruso JM, Baldomir D. Towards improved magnetic fluid hyperthermia: major-loops to diminish variations in local heating. Phys Chem Chem Phys 2017; 19:14527-14532. [DOI: 10.1039/c7cp01442b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A low anisotropy constant allows us to decrease local heating dispersion for a given applied magnetic field amplitude.
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Affiliation(s)
- Cristina Munoz-Menendez
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - David Serantes
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
- Department of Physics
| | - Juan M. Ruso
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Daniel Baldomir
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
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7
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Munoz-Menendez C, Conde-Leboran I, Serantes D, Chantrell R, Chubykalo-Fesenko O, Baldomir D. Distinguishing between heating power and hyperthermic cell-treatment efficacy in magnetic fluid hyperthermia. SOFT MATTER 2016; 12:8815-8818. [PMID: 27752685 DOI: 10.1039/c6sm01910b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the magnetic fluid hyperthermia (MFH) research field, it is usually assumed that achieving a uniform temperature enhancement (ΔT) of the entire tumour is a key-point for treatment. However, various experimental works reported successful cell apoptosis via MFH without a noticeable ΔT of the system. A possible explanation of the success of these negligible-ΔT experiments is that a local ΔT restricted to the particle nanoenvironment (i.e. with no significant effect on the global temperature T) could be enough to trigger cell death. Shedding light on such a possibility requires accurate knowledge of heat dissipation at the local level in relation to the usually investigated global (average) one. Since size polydispersity is inherent to all synthesis techniques and the heat released is proportional to the particle size, heat dissipation spots with different performances - and thus different effects on the cells - will likely exist in every sample. In this work we aim for a double objective: (1) to emphasize the necessity to distinguish between the total dissipated heat and hyperthermia effectiveness, and (2) to suggest a theoretical approach on how to select, for a given size polydispersity, a more adequate average size so that most of the particles dissipate within a desired heating power range. The results are reported in terms of Fe3O4 nanoparticles as a representative example.
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Affiliation(s)
- Cristina Munoz-Menendez
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Ivan Conde-Leboran
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - David Serantes
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain. and Department of Physics, University of York, York YO10 5DD, UK
| | - Roy Chantrell
- Department of Physics, University of York, York YO10 5DD, UK
| | | | - Daniel Baldomir
- Instituto de Investigacións Tecnolóxicas and Departamento de Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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8
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Shah RR, Dombrowsky AR, Paulson AL, Johnson MP, Nikles DE, Brazel CS. Determining iron oxide nanoparticle heating efficiency and elucidating local nanoparticle temperature for application in agarose gel-based tumor model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:18-29. [PMID: 27523991 PMCID: PMC4987542 DOI: 10.1016/j.msec.2016.05.086] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/08/2016] [Accepted: 05/19/2016] [Indexed: 11/25/2022]
Abstract
Magnetic iron oxide nanoparticles (MNPs) have been developed for magnetic fluid hyperthermia (MFH) cancer therapy, where cancer cells are treated through the heat generated by application of a high frequency magnetic field. This heat has also been proposed as a mechanism to trigger release of chemotherapy agents. In each of these cases, MNPs with optimal heating performance can be used to maximize therapeutic effect while minimizing the required dosage of MNPs. In this study, the heating efficiencies (or specific absorption rate, SAR) of two types of MNPs were evaluated experimentally and then predicted from their magnetic properties. MNPs were also incorporated in the core of poly(ethylene glycol-b-caprolactone) micelles, co-localized with rhodamine B fluorescent dye attached to polycaprolactone to monitor local, nanoscale temperatures during magnetic heating. Despite a relatively high SAR produced by these MNPs, no significant temperature rise beyond that observed in the bulk solution was measured by fluorescence in the core of the magnetic micelles. MNPs were also incorporated into a macro-scale agarose gel system that mimicked a tumor targeted by MNPs and surrounded by healthy tissues. The agarose-based tumor models showed that targeted MNPs can reach hyperthermia temperatures inside a tumor with a sufficient MNP concentration, while causing minimal temperature rise in the healthy tissue surrounding the tumor.
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Affiliation(s)
- Rhythm R Shah
- The University of Alabama, Department of Chemical and Biological Engineering, Tuscaloosa, AL, United States.
| | - Alexander R Dombrowsky
- The University of Alabama, Department of Chemical and Biological Engineering, Tuscaloosa, AL, United States.
| | - Abigail L Paulson
- The University of Alabama, Department of Chemistry, Tuscaloosa, AL, United States.
| | - Margaret P Johnson
- The University of Alabama, Department of Chemistry, Tuscaloosa, AL, United States.
| | - David E Nikles
- The University of Alabama, Department of Chemistry, Tuscaloosa, AL, United States.
| | - Christopher S Brazel
- The University of Alabama, Department of Chemical and Biological Engineering, Tuscaloosa, AL, United States.
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9
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Ebrahimi S, Akhlaghi Y, Kompany-Zareh M, Rinnan A. Nucleic acid based fluorescent nanothermometers. ACS NANO 2014; 8:10372-10382. [PMID: 25265370 DOI: 10.1021/nn5036944] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Accurate thermometry at micro- and nanoscales is essential in many nanobiotechnological applications. The nanothermometers introduced in this paper are composed of labeled molecular beacons (MBs) comprising gold nanoparticles (AuNPs) on which, depending on application, many MBs of one or more types are immobilized. In this design, three differently labeled MBs with different thermostabilities function as the sensing elements, and AuNPs act as carriers of the MBs and also quenchers of their fluorophores. This flexible design results in a number of nanothermometers with various temperature-sensing ranges. At the lowest temperature, the MBs are in the closed form, where they are quenched. By increasing the temperature, the MBs start to open with respect to their melting points (Tm), and as a result, the fluorescence emission will increase. The temperature resolution of the nanoprobes over a range of 15-60 °C is less than 0.50 °C, which indicates their high sensitivity. Such a good temperature resolution is a result of the specific design of the unusual less stable MBs and also presence of many MBs on AuNPs. The reproducibility and precision of the probes are also satisfactory. The multiplex MB nanoprobe is suitable for thermal imaging by fluorescence microscopy.
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Affiliation(s)
- Sara Ebrahimi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS) , Zanjan, 45137-66731, Iran
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10
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Jayakumar MKG, Bansal A, Huang K, Yao R, Li BN, Zhang Y. Near-infrared-light-based nano-platform boosts endosomal escape and controls gene knockdown in vivo. ACS NANO 2014; 8:4848-4858. [PMID: 24730360 DOI: 10.1021/nn500777n] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Current nanoparticle-based gene delivery techniques face two major limitations, namely, endosomal degradation and poor cytosolic release of the nanoparticles and nonspecificity of treatment. These limitations can be overcome with certain light-based techniques, such as photochemical internalization to enable endosomal escape of the delivered nanoparticles and light-controlled gene expression to overcome the nonspecific effects. However, these techniques require UV/visible light, which is either phototoxic and/or has low tissue penetration capabilities, thus preventing their use in deep tissues in a clinical setting. In an effort to overcome these barriers, we have successfully demonstrated a light-based gene delivery system that significantly boosts cytosolic gene delivery, with precise control over gene expression and the potential for use in nonsuperficial tissues. Core-shell fluorescent upconversion nanoparticles excited by highly penetrating near-infrared radiation and emitting simultaneously in the ultraviolet and visible ranges were synthesized and used as remote nanotransducers to simultaneously activate endosomal escape and gene knockdown. Gene knockdown using photomorpholinos was enhanced as much as 30% in vitro compared to the control without endosomal escape facilitation. A similar trend was seen in vivo in a murine melanoma model, demonstrating the enormous clinical potential of this system.
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11
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Shen J, Li K, Cheng L, Liu Z, Lee ST, Liu J. Specific detection and simultaneously localized photothermal treatment of cancer cells using layer-by-layer assembled multifunctional nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6443-6452. [PMID: 24734871 DOI: 10.1021/am405924g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
There is a great need to develop multifunctional nanoparticles (MFNPs) for cancer biomarker-based detection and highly selective therapeutic treatment simultaneously. Here we describe a facile approach of layer-by-layer-assembled MFNPs conjugated with monoclonal antibody anti-HER2, demonstrating the specific detection of breast cancer BT474 cells (biomarker HER2 positive) with a high signal-to-noise ratio. The MFNPs contain a well-defined core-shell structure of UCNP@Fe3O4@Au coated by poly(ethylene glycol) (PEG) and anti-HER2 antibody, displaying excellent dispersity in various aqueous solutions. This unique combination of nanoparticles and ligand molecules allows us to perform photothermal treatment (PTT) of the cancer cells, while simultaneously quantifying the distribution of MFNPs on a cancer cell surface induced by antigen-antibody binding events. An important finding is that cancer cells adjacent to each other or in physical proximity within micrometers may end up with different fates of survival or death in PTT. This dramatic difference is determined by the antigen-antibody binding events at the interface of MFNPs and cells because of tumor cell heterogeneity. Therefore, our experiments reveal a new scale of the highly localized feature of the photothermal effect at the single-cell level illuminated by a continuous-wave near-IR laser.
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Affiliation(s)
- Jianwei Shen
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , 199 Ren Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, China
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