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Andoh V, Ocansey DKW, Naveed H, Wang N, Chen L, Chen K, Mao F. The Advancing Role of Nanocomposites in Cancer Diagnosis and Treatment. Int J Nanomedicine 2024; 19:6099-6126. [PMID: 38911500 PMCID: PMC11194004 DOI: 10.2147/ijn.s471360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 06/12/2024] [Indexed: 06/25/2024] Open
Abstract
The relentless pursuit of effective cancer diagnosis and treatment strategies has led to the rapidly expanding field of nanotechnology, with a specific focus on nanocomposites. Nanocomposites, a combination of nanomaterials with diverse properties, have emerged as versatile tools in oncology, offering multifunctional platforms for targeted delivery, imaging, and therapeutic interventions. Nanocomposites exhibit great potential for early detection and accurate imaging in cancer diagnosis. Integrating various imaging modalities, such as magnetic resonance imaging (MRI), computed tomography (CT), and fluorescence imaging, into nanocomposites enables the development of contrast agents with enhanced sensitivity and specificity. Moreover, functionalizing nanocomposites with targeting ligands ensures selective accumulation in tumor tissues, facilitating precise imaging and diagnostic accuracy. On the therapeutic front, nanocomposites have revolutionized cancer treatment by overcoming traditional challenges associated with drug delivery. The controlled release of therapeutic agents from nanocomposite carriers enhances drug bioavailability, reduces systemic toxicity, and improves overall treatment efficacy. Additionally, the integration of stimuli-responsive components within nanocomposites enables site-specific drug release triggered by the unique microenvironment of the tumor. Despite the remarkable progress in the field, challenges such as biocompatibility, scalability, and long-term safety profiles remain. This article provides a comprehensive overview of recent developments, challenges, and prospects, emphasizing the transformative potential of nanocomposites in revolutionizing the landscape of cancer diagnostics and therapeutics. In Conclusion, integrating nanocomposites in cancer diagnosis and treatment heralds a new era for precision medicine.
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Affiliation(s)
- Vivian Andoh
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Dickson Kofi Wiredu Ocansey
- Department of Laboratory Medicine, Lianyungang Clinical College, Jiangsu University, Lianyungang, Jiangsu, People’s Republic of China
- Directorate of University Health Services, University of Cape Coast, Cape Coast, Central Region, CC0959347, Ghana
| | - Hassan Naveed
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Naijian Wang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, People’s Republic of China
| | - Liang Chen
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Keping Chen
- School of Life Sciences, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Fei Mao
- Department of Laboratory Medicine, Lianyungang Clinical College, Jiangsu University, Lianyungang, Jiangsu, People’s Republic of China
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Liu B, Jin J, Ran B, Chen C, Li J, Qin N, Zhu Y. Continuous production of bimetallic nanoparticles on carbon nanotubes based on 3D-printed microfluidics. NANOSCALE 2024; 16:2565-2573. [PMID: 38224263 DOI: 10.1039/d3nr05090d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Nanoparticle-functionalized carbon nanotubes are promising in many research fields, especially in sensing, due to their intriguing performance in catalysis. However, these nanomaterials are mainly produced through batch processes under harsh conditions, thus encountering inherent limitations of low throughput and uncontrollable morphology of functional nanoparticles (NPs). In this work, we propose a method for high-yield and continuous production of bimetallic (Pt-Pd) NPs on multi-walled carbon nanotubes (MWCNTs) at room temperature through a custom 3D-printed microfluidic platform. A homogenous particle nucleation and growth environment could be created on the microfluidic platform that was equipped with two 3D-printed micromixers. Pt-Pd NPs loaded on MWCNTs were prepared in the microfluidic platform with high throughput and controlled size, dispersity and composition. The synthetic parameters for these nanocomposites were investigated to optimize their electrocatalytic performance. The optimized nanocomposites exhibited excellent electrocatalytic activity with exceptional sensitivity and wide detection range, superior to their counterparts prepared via conventional approaches. This method proposed here could be further adapted for manufacturing other catalyst support materials, opening more avenues for future large-scale production and catalytic investigation of functional nanomaterials.
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Affiliation(s)
- Bo Liu
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China.
| | - Jing Jin
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China.
| | - Bin Ran
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China.
| | - Chaozhan Chen
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China.
| | - Jiaqian Li
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Ning Qin
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Yonggang Zhu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China.
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Lorencova L, Kasak P, Kosutova N, Jerigova M, Noskovicova E, Vikartovska A, Barath M, Farkas P, Tkac J. MXene-based electrochemical devices applied for healthcare applications. Mikrochim Acta 2024; 191:88. [PMID: 38206460 PMCID: PMC10784403 DOI: 10.1007/s00604-023-06163-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
The initial part of the review provides an extensive overview about MXenes as novel and exciting 2D nanomaterials describing their basic physico-chemical features, methods of their synthesis, and possible interfacial modifications and techniques, which could be applied to the characterization of MXenes. Unique physico-chemical parameters of MXenes make them attractive for many practical applications, which are shortly discussed. Use of MXenes for healthcare applications is a hot scientific discipline which is discussed in detail. The article focuses on determination of low molecular weight analytes (metabolites), high molecular weight analytes (DNA/RNA and proteins), or even cells, exosomes, and viruses detected using electrochemical sensors and biosensors. Separate chapters are provided to show the potential of MXene-based devices for determination of cancer biomarkers and as wearable sensors and biosensors for monitoring of a wide range of human activities.
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Affiliation(s)
- Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic.
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Peter Kasak
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Natalia Kosutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Monika Jerigova
- International Laser Center, Slovak Center of Scientific and Technical Information, Ilkovicova 3, 841 04, Bratislava, Slovak Republic
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, Mlynska Dolina, 842 15, Bratislava, Slovak Republic
| | - Eva Noskovicova
- International Laser Center, Slovak Center of Scientific and Technical Information, Ilkovicova 3, 841 04, Bratislava, Slovak Republic
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, Mlynska Dolina, 842 15, Bratislava, Slovak Republic
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Marek Barath
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Pavol Farkas
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38, Bratislava, Slovak Republic.
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Chen C, Ran B, Liu B, Liu X, Zhang Z, Li Y, Li H, Lan M, Zhu Y. Multiplexed detection of biomarkers using a microfluidic chip integrated with mass-producible micropillar array electrodes. Anal Chim Acta 2023; 1272:341450. [PMID: 37355325 DOI: 10.1016/j.aca.2023.341450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/26/2023]
Abstract
Quantifying multiple biomarkers with high sensitivity in tiny biological samples is essential to meet the growing demand for point-of-care testing. This paper reports the development of a novel microfluidic device integrated with mass-producible micropillar array electrodes (μAEs) for multiple biomarker detections. The μAE are mass-fabricated by soft lithography and hot embossing technique. Pt-Pd bimetallic nanoclusters (BNC) are modified on the surface of μAEs by constant potential (CP)/multi-potential step (MPS) electrodeposition strategies to improve the electroanalytical performance. The experimental result displays that Pt-Pd BNC/μAEs have good sensitivity enhancement compared with bare planar electrodes and bare μAEs, the enhancement being 56.5 and 9.5 times respectively, from the results of the H2O2 detection. Furthermore, glucose, uric acid and sarcosine were used as model biomarkers to show the biosensing capability with high sensitivity. The linear range and LOD of the glucose, uric acid and sarcosine detection are 0.1 mM-12 mM, 10 μM-800 μM and 2.5 μM-100 μM, 58.5, 3.4 and 0.4 μM, respectively. In particular, biosensing chips show wide linear ranges covering required detection ranges of glucose, uric acid and sarcosine in human serum, indicating the developed device has great potential in self-health management and clinical requirements.
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Affiliation(s)
- Chaozhan Chen
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China
| | - Bin Ran
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China
| | - Bo Liu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China
| | - Xiaoxuan Liu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China
| | - Ziteng Zhang
- Shenzhen Third People's Hospital, Shenzhen, 518112, PR China
| | - Yan Li
- Shenzhen Third People's Hospital, Shenzhen, 518112, PR China
| | - Hongchun Li
- Shenzhen Third People's Hospital, Shenzhen, 518112, PR China
| | - Minbo Lan
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Yonggang Zhu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China; Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, PR China.
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5
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Shi J, Tong W, Yu Z, Tong L, Chen H, Jin J, Zhu Y. Pollution-Free and Highly Sensitive Lactate Detection in Cell Culture Based on a Microfluidic Chip. MICROMACHINES 2023; 14:770. [PMID: 37421003 DOI: 10.3390/mi14040770] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 07/09/2023]
Abstract
Cell metabolite detection is important for cell analysis. As a cellular metabolite, lactate and its detection play an important role in disease diagnosis, drug screening and clinical therapeutics. This paper reports a microfluidic chip integrated with a backflow prevention channel for cell culture and lactate detection. It can effectively realize the upstream and downstream separation of the culture chamber and the detection zone, and prevent the pollution of cells caused by the potential backflow of reagent and buffer solutions. Due to such a separation, it is possible to analyze the lactate concentration in the flow process without contamination of cells. With the information of residence time distribution of the microchannel networks and the detected time signal in the detection chamber, it is possible to calculate the lactate concentration as a function of time using the de-convolution method. We have further demonstrated the suitability of this detection method by measuring lactate production in human umbilical vein endothelial cells (HUVEC). The microfluidic chip presented here shows good stability in metabolite quick detection and can work continuously for more than a few days. It sheds new insights into pollution-free and high-sensitivity cell metabolism detection, showing broad application prospects in cell analysis, drug screening and disease diagnosis.
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Affiliation(s)
- Jiaming Shi
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Wenqiang Tong
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Zhihang Yu
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Lei Tong
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Huaying Chen
- Center for Microflows and Nanoflows, School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Jing Jin
- Center for Microflows and Nanoflows, School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
| | - Yonggang Zhu
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
- Center for Microflows and Nanoflows, School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China
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6
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Liu B, Ran B, Chen C, Shi L, Jin J, Zhu Y. High-Throughput Microfluidic Production of Bimetallic Nanoparticles on MXene Nanosheets and Application in Hydrogen Peroxide Detection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:56298-56309. [PMID: 36475575 DOI: 10.1021/acsami.2c16316] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nanoparticle-functionalized transition-metal carbides and nitrides (MXenes) have attracted extensive attention in electrochemical detection owing to their excellent catalytic performance. However, the mainstream synthetic routes rely on the batch method requiring strict experimental conditions, generally leading to low yield and poor size tunability of particles. Herein, we report a high-throughput and continuous microfluidic platform for preparing a functional MXene (Ti3C2Tx) with bimetallic nanoparticles (Pt-Pd NPs) at room temperature. Two 3D micromixers with helical elements were integrated into the microfluidic platform to enhance the secondary flow for promoting transport and reaction in the synthesis process. The rapid mixing and strong vortices in these 3D micromixers prevent aggregation of NPs in the synthesis process, enabling a homogeneous distribution of Pt-Pd NPs. In this study, Pt-Pd NPs loaded on the MXene nanosheets were synthesized under various hydrodynamic conditions of 1-15 mL min-1 with controlled sizes, densities, and compositions. The mean size of Pt-Pd NPs could be readily controlled within the range 2.4-9.3 nm with high production rates up to 13 mg min-1. In addition, synthetic and electrochemical parameters were separately optimized to improve the electrochemical performance of Ti3C2Tx/Pt-Pd. Finally, the optimized Ti3C2Tx/Pt-Pd was used for hydrogen peroxide (H2O2) detection and shows excellent electrocatalytic activity. The electrode modified with Ti3C2Tx/Pt-Pd here presents a wide detection range for H2O2 from 1 to 12 000 μM with a limit of detection down to 0.3 μM and a sensitivity up to 300 μA mM-1 cm-2, superior to those prepared in the traditional batch method. The proposed microfluidic approach could greatly enhance the electrochemical performance of Ti3C2Tx/Pt-Pd, and sheds new light on the large-scale production and catalytic application of the functional nanocomposites.
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Affiliation(s)
- Bo Liu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Bin Ran
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Chaozhan Chen
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Liuyong Shi
- Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
| | - Jing Jin
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Yonggang Zhu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
- Center for Microflows and Nanoflows, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
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7
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Niu G, Gao F, Wang Y, Zhang J, Zhao L, Jiang Y. Bimetallic Nanomaterials: A Promising Nanoplatform for Multimodal Cancer Therapy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248712. [PMID: 36557846 PMCID: PMC9783205 DOI: 10.3390/molecules27248712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/25/2022] [Accepted: 12/03/2022] [Indexed: 12/13/2022]
Abstract
Bimetallic nanomaterials (BMNs) composed of two different metal elements have certain mixing patterns and geometric structures, and they often have superior properties than monometallic nanomaterials. Bimetallic-based nanomaterials have been widely investigated and extensively used in many biomedical fields especially cancer therapy because of their unique morphology and structure, special physicochemical properties, excellent biocompatibility, and synergistic effect. However, most reviews focused on the application of BMNs in cancer diagnoses (sensing, and imaging) and rarely mentioned the application of the treatment of cancer. The purpose of this review is to provide a comprehensive perspective on the recent progress of BNMs as therapeutic agents. We first introduce and discuss the synthesis methods, intrinsic properties (size, morphology, and structure), and optical and catalytic properties relevant to cancer therapy. Then, we highlight the application of BMNs in cancer therapy (e.g., drug/gene delivery, radiotherapy, photothermal therapy, photodynamic therapy, enzyme-mediated tumor therapy, and multifunctional synergistic therapy). Finally, we put forward insights for the forthcoming in order to make more comprehensive use of BMNs and improve the medical system of cancer treatment.
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Affiliation(s)
| | | | | | - Jie Zhang
- Correspondence: (J.Z.); (L.Z.); (Y.J.); Tel.: +86-17865551290 (Y.J.)
| | - Li Zhao
- Correspondence: (J.Z.); (L.Z.); (Y.J.); Tel.: +86-17865551290 (Y.J.)
| | - Yanyan Jiang
- Correspondence: (J.Z.); (L.Z.); (Y.J.); Tel.: +86-17865551290 (Y.J.)
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Gao N, Zhao J, Zhu X, Xu J, Ling G, Zhang P. Functional two-dimensional MXenes as cancer theranostic agents. Acta Biomater 2022; 154:1-22. [PMID: 36243374 DOI: 10.1016/j.actbio.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/23/2022] [Accepted: 10/04/2022] [Indexed: 12/14/2022]
Abstract
Recently, MXenes, as a kind of two-dimensional (2D) layered materials with exceptional performance, have become the research hotspots owing to their unique structural, electronic, and chemical properties. They have potential applications in electrochemical storage, photocatalysis, and biosensors. Furthermore, they have certain characteristics such as large surface area, favorable biocompatibility, and ideal mechanical properties, which can expand their applications in biomedical fields, especially in cancer therapy. To date, several researchers have explored the applications of MXenes in tumor elimination, which exhibited other fantastic properties of those 2D MXenes, such as efficient in vivo photothermal ablation, low phototoxicity, high biocompatibility, etc. In this review, the structures, properties, modifications, and preparation methods are introduced respectively. More importantly, the multifunctional platforms for cancer therapy based on MXenes nanosheets (NSs) are reviewed in detail, including single-modality and combined-modality cancer therapy. Finally, the prospects and challenges of MXenes are prospected and discussed. STATEMENT OF SIGNIFICANCE: In this review, the structures, properties, modifications, and preparation methods of MXenes nanomaterials are introduced, respectively. In addition, the preparation conditions and morphological characterizations of some common MXenes for therapeutic platforms are also summarized. More importantly, the practical applications of MXenes-based nanosheets are reviewed in detail, including drug delivery, biosensing, bioimaging, and multifunctional tumor therapy platforms. Finally, the future prospects and challenges of MXenes are prospected and discussed.
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Affiliation(s)
- Nan Gao
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Jiuhong Zhao
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Xiaoguang Zhu
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Jiaqi Xu
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Guixia Ling
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
| | - Peng Zhang
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
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Chen C, Ran B, Liu B, Liu X, Jin J, Zhu Y. Numerical Study on a Bio-Inspired Micropillar Array Electrode in a Microfluidic Device. BIOSENSORS 2022; 12:878. [PMID: 36291015 PMCID: PMC9599680 DOI: 10.3390/bios12100878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
The micropillar array electrode (µAE) has been widely applied in microchip-based electrochemical detection systems due to a large current response. However, it was found that amplifying the current through further adjusting geometrical parameters is generally hindered by the shielding effect. To solve this problem, a bio-inspired micropillar array electrode (bµAE) based on the microfluidic device has been proposed in this study. The inspiration is drawn from the structure of leatherback sea turtles' mouths. By deforming a μAE to rearrange the micropillars on bilateral sides of the microchannel, the contact area between micropillars and analytes increases, and thus the current is substantially improved. A numerical simulation was then used to characterize the electrochemical performance of bµAEs. The effects of geometrical and hydrodynamic parameters on the current of bµAEs were investigated. Moreover, a prototypical microchip integrated with bµAE was fabricated for detailed electrochemical measurement. The chronoamperometry measurements were conducted to verify the theoretical performance of bµAEs, and the results suggest that the experimental data are in good agreement with those of the simulation model. This work presents a novel bµAE with great potential for highly sensitive electrochemical detection and provides a new perspective on the efficient configuration of the µAE.
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Affiliation(s)
- Chaozhan Chen
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Bin Ran
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Bo Liu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Xiaoxuan Liu
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Jing Jin
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Yonggang Zhu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
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