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Dutta D, Al Hoque A, Paul B, Park JH, Chowdhury C, Quadir M, Banerjee S, Choudhury A, Laha S, Sepay N, Boro P, Kaipparettu BA, Mukherjee B. EpCAM-targeted betulinic acid analogue nanotherapy improves therapeutic efficacy and induces anti-tumorigenic immune response in colorectal cancer tumor microenvironment. J Biomed Sci 2024; 31:81. [PMID: 39164686 PMCID: PMC11334571 DOI: 10.1186/s12929-024-01069-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 07/09/2024] [Indexed: 08/22/2024] Open
Abstract
BACKGROUND Betulinic acid (BA) has been well investigated for its antiproliferative and mitochondrial pathway-mediated apoptosis-inducing effects on various cancers. However, its poor solubility and off-target activity have limited its utility in clinical trials. Additionally, the immune modulatory role of betulinic acid analogue in the tumor microenvironment (TME) is largely unknown. Here, we designed a potential nanotherapy for colorectal cancer (CRC) with a lead betulinic acid analogue, named as 2c, carrying a 1,2,3-triazole-moiety attached to BA through a linker, found more effective than BA for inhibiting CRC cell lines, and was chosen here for this investigation. Epithelial cell adhesion molecule (EpCAM) is highly overexpressed on the CRC cell membrane. A single-stranded short oligonucleotide sequence, aptamer (Apt), that folds into a 3D-defined architecture can be used as a targeting ligand for its specific binding to a target protein. EpCAM targeting aptamer was designed for site-specific homing of aptamer-conjugated-2c-loaded nanoparticles (Apt-2cNP) at the CRC tumor site to enhance therapeutic potential and reduce off-target toxicity in normal cells. We investigated the in vitro and in vivo therapeutic efficacy and anti-tumorigenic immune response of aptamer conjugated nanotherapy in CRC-TME. METHODS After the characterization of nanoengineered aptamer conjugated betulinic acid nanotherapy, we evaluated therapeutic efficacy, tumor targeting efficiency, and anti-tumorigenic immune response using cell-based assays and mouse and rat models. RESULTS We found that Apt-2cNP improved drug bioavailability, enhanced its biological half-life, improved antiproliferative activity, and minimized off-target cytotoxicity. Importantly, in an in vivo TME, Apt-2cNP showed promising signs of anti-tumorigenic immune response (increased mDC/pDC ratio, enhanced M1 macrophage population, and CD8 T-cells). Furthermore, in vivo upregulation of pro-apoptotic while downregulation of anti-apoptotic genes and significant healing efficacy on cancer tissue histopathology suggest that Apt-2cNP had predominantly greater therapeutic potential than the non-aptamer-conjugated nanoparticles and free drug. Moreover, we observed greater tumor accumulation of the radiolabeled Apt-2cNP by live imaging in the CRC rat model. CONCLUSIONS Enhanced therapeutic efficacy and robust anti-tumorigenic immune response of Apt-2cNP in the CRC-TME are promising indicators of its potential as a prospective therapeutic agent for managing CRC. However, further studies are warranted.
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Affiliation(s)
- Debasmita Dutta
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND, USA.
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India.
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
| | - Ashique Al Hoque
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND, USA
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India
| | - Brahamacharry Paul
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India
| | - Jun Hyoung Park
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | | | - Mohiuddin Quadir
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND, USA
| | - Soumyabrata Banerjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India
- Department of Psychology and Neuroscience Program, Central Michigan University, Mount Pleasant, MI, 48859, USA
- Department of Human Physiology, Vidyasagar University, Midnapore, 721102, West Bengal, India
| | | | - Soumik Laha
- CSIR- Indian Institute of Chemical Biology, Kolkata, India
| | - Nayim Sepay
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Priyanka Boro
- CSIR- Indian Institute of Chemical Biology, Kolkata, India
| | | | - Biswajit Mukherjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India.
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Liu T, Simine L. DeltaGzip: Computing Biopolymer-Ligand Binding Affinity via Kolmogorov Complexity and Lossless Compression. J Chem Inf Model 2024; 64:5617-5623. [PMID: 38980667 DOI: 10.1021/acs.jcim.4c00461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
The design of biosequences for biosensing and therapeutics is a challenging multistep search and optimization task. In principle, computational modeling may speed up the design process by virtual screening of sequences based on their binding affinities to target molecules. However, in practice, existing machine-learned models trained to predict binding affinities lack the flexibility with respect to reaction conditions, and molecular dynamics simulations that can incorporate reaction conditions suffer from high computational costs. Here, we describe a computational approach called DeltaGzip that evaluates the free energy of binding in biopolymer-ligand complexes from ultrashort equilibrium molecular dynamics simulations. The entropy of binding is evaluated using the Kolmogorov complexity definition of entropy and approximated using a lossless compression algorithm, Gzip. We benchmark the method on a well-studied data set of protein-ligand complexes comparing the predictions of DeltaGzip to the free energies of binding obtained using Jarzynski equality and experimental measurements.
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Affiliation(s)
- Tao Liu
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Lena Simine
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
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Maradani BS, Parameswaran S, Subramanian K. Development of DNA aptamers targeting B7H3 by hybrid-SELEX: an alternative to antibodies for immuno-assays. Sci Rep 2024; 14:13552. [PMID: 38866941 PMCID: PMC11169341 DOI: 10.1038/s41598-024-64559-7] [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: 02/05/2024] [Accepted: 06/11/2024] [Indexed: 06/14/2024] Open
Abstract
Antibodies have been extensively used in numerous applications within proteomics-based technologies, requiring high sensitivity, specificity, a broad dynamic range for detection, and precise, reproducible quantification. Seeking alternatives to antibodies due to several inherent limitations of antibodies is an area of active research of tremendous importance. Recently, aptamers have been receiving increasing attention, because they not only have all of the advantages of antibodies, but also have unique advantages, such as thermal stability, low cost, and unlimited applications. Aptamers are gaining importance in immunological studies and can potentially replace antibodies in immunoassays. B7H3, an immunoregulatory protein belonging to the B7 family, is an attractive and promising target due to its overexpression in several tumor tissues while exhibiting limited expression in normal tissues. This study employed hybrid-SELEX with next-generation sequencing to select ssDNA aptamers specifically binding to the B7H3 protein. These aptamers demonstrated versatility across various assays, including flow cytometry, dot-blot, and immunohistochemistry. Effective performance in sandwich dot-blot assays and western blot analysis suggests their potential for diagnostic applications and demonstrates their adaptability and cost-effectiveness in diverse protein detection techniques.
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Affiliation(s)
- Bhavani Shankar Maradani
- L&T Ocular Pathology Department, Vision Research Foundation, Sankara Nethralaya, No. 41, College Road, Nungambakkam, Chennai, Tamil Nadu, 600006, India
- School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
| | - Sowmya Parameswaran
- Radheshyam Kanoi Stem Cell Laboratory, Vision Research Foundation, Chennai, India
| | - Krishnakumar Subramanian
- L&T Ocular Pathology Department, Vision Research Foundation, Sankara Nethralaya, No. 41, College Road, Nungambakkam, Chennai, Tamil Nadu, 600006, India.
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4
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Yang W, Feng L. Mg 2+-promoted high-efficiency DNA conjugation on polydopamine surfaces for aptamer-based ochratoxin A detection. Anal Chim Acta 2024; 1298:342382. [PMID: 38462338 DOI: 10.1016/j.aca.2024.342382] [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: 12/19/2023] [Accepted: 02/15/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND Surface immobilization of DNA is the foundation of a broad range of applications in biosensing and specific DNA extraction. Polydopamine (PDA) coatings can serve as intermediate layers to immobilize amino- or thiol-labelled molecules, including DNA, onto various materials through Michael addition and/or Schiff base reactions. However, the conjugation efficiency is limited by electrostatic repulsion between negatively charged DNA and PDA. Recently, it has been reported that polyvalent metal ions (such as Mg2+ and Ca2+) can mediate the adsorption of DNA on PDA surfaces. Inspired by this, in this work we aimed to exploit polyvalent metal ions to facilitate the conjugation of DNA on PDA. RESULTS Mg2+ was used to promote the conjugation of amino-terminated DNA complementary to ochratoxin A (OTA) aptamer (cDNA-NH2) on PDA-coated magnetic nanoparticles (Fe3O4@PDA). After the reaction, the unlinked cDNA-NH2 adsorbed on Fe3O4@PDA mediated by Mg2+ was removed with EDTA. In the presence of 20 mM Mg2+, the amount of covalently linked cDNA-NH2 increased approximately 11-fold compared to that in the absence of Mg2+. The resulting Fe3O4@PDA@cDNA conjugates exhibited superior hybridization capacity towards OTA aptamers, minimal nonspecific adsorption, and excellent chemical stability. The conjugates combined with fluorophore-labelled aptamers were employed for OTA detection, achieving a limit of detection (LOD) of 2.77 ng mL-1. To demonstrate versatility, this conjugation method was extended to Ca2+-promoted conjugation of cDNA-NH2 on Fe3O4@PDA nanoparticles and Mg2+-promoted conjugation of cDNA-NH2 on PDA-coated 96-well plates. SIGNIFICANCE The conjugation efficiency of DNA on PDA was significantly improved with the assistance of polyvalent metal ions (Mg2+ and Ca2+), providing a facile and efficient method for DNA immobilization. Due to the substrate-independent adhesion property of PDA, this method demonstrates versatility in DNA surface modification and holds great potential for applications in target extraction, biosensing, and other fields.
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Affiliation(s)
- Wei Yang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
| | - Liang Feng
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China.
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Tan K, Ma H, Mu X, Wang Z, Wang Q, Wang H, Zhang XD. Application of gold nanoclusters in fluorescence sensing and biological detection. Anal Bioanal Chem 2024:10.1007/s00216-024-05220-0. [PMID: 38436693 DOI: 10.1007/s00216-024-05220-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/29/2024] [Accepted: 02/16/2024] [Indexed: 03/05/2024]
Abstract
Gold nanoclusters (Au NCs) exhibit broad fluorescent spectra from visible to near-infrared regions and good enzyme-mimicking catalytic activities. Combined with excellent stability and exceptional biocompatibility, the Au NCs have been widely exploited in biomedicine such as biocatalysis and bioimaging. Especially, the long fluorescence lifetime and large Stokes shift attribute Au NCs to good probes for fluorescence sensing and biological detection. In this review, we systematically summarized the molecular structure and fluorescence properties of Au NCs and highlighted the advances in fluorescence sensing and biological detection. The Au NCs display high sensitivity and specificity in detecting iodine ions, metal ions, and reactive oxygen species, as well as certain diseases based on the fluorescence activities of Au NCs. We also proposed several points to improve the practicability and accelerate the clinical translation of the Au NCs.
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Affiliation(s)
- Kexin Tan
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Huizhen Ma
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin, 300350, China
| | - Xiaoyu Mu
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Zhidong Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Qi Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China.
| | - Hao Wang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China.
| | - Xiao-Dong Zhang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China.
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin, 300350, China.
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Rabaan AA, Bukhamsin R, AlSaihati H, Alshamrani SA, AlSihati J, Al-Afghani HM, Alsubki RA, Abuzaid AA, Al-Abdulhadi S, Aldawood Y, Alsaleh AA, Alhashem YN, Almatouq JA, Emran TB, Al-Ahmed SH, Nainu F, Mohapatra RK. Recent Trends and Developments in Multifunctional Nanoparticles for Cancer Theranostics. Molecules 2022; 27:8659. [PMID: 36557793 PMCID: PMC9780934 DOI: 10.3390/molecules27248659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Conventional anticancer treatments, such as radiotherapy and chemotherapy, have significantly improved cancer therapy. Nevertheless, the existing traditional anticancer treatments have been reported to cause serious side effects and resistance to cancer and even to severely affect the quality of life of cancer survivors, which indicates the utmost urgency to develop effective and safe anticancer treatments. As the primary focus of cancer nanotheranostics, nanomaterials with unique surface chemistry and shape have been investigated for integrating cancer diagnostics with treatment techniques, including guiding a prompt diagnosis, precise imaging, treatment with an effective dose, and real-time supervision of therapeutic efficacy. Several theranostic nanosystems have been explored for cancer diagnosis and treatment in the past decade. However, metal-based nanotheranostics continue to be the most common types of nonentities. Consequently, the present review covers the physical characteristics of effective metallic, functionalized, and hybrid nanotheranostic systems. The scope of coverage also includes the clinical advantages and limitations of cancer nanotheranostics. In light of these viewpoints, future research directions exploring the robustness and clinical viability of cancer nanotheranostics through various strategies to enhance the biocompatibility of theranostic nanoparticles are summarised.
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Affiliation(s)
- Ali A. Rabaan
- Molecular Diagnostic Laboratory, Johns Hopkins Aramco Healthcare, Dhahran 31311, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
- Department of Public Health and Nutrition, The University of Haripur, Haripur 22610, Pakistan
| | - Rehab Bukhamsin
- Dammam Regional Laboratory and Blood Bank, Dammam 31411, Saudi Arabia
| | - Hajir AlSaihati
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hafr Al Batin, Hafr Al Batin 39831, Saudi Arabia
| | - Saleh A. Alshamrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Najran University, Najran 61441, Saudi Arabia
| | - Jehad AlSihati
- Internal Medicine Department, Gastroenterology Section, King Fahad Specialist Hospital, Dammam 31311, Saudi Arabia
| | - Hani M. Al-Afghani
- Laboratory Department, Security Forces Hospital, Makkah 24269, Saudi Arabia
- iGene Center for Research and Training, Jeddah 23484, Saudi Arabia
| | - Roua A. Alsubki
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11362, Saudi Arabia
| | - Abdulmonem A. Abuzaid
- Medical Microbiology Department, Security Forces Hospital Programme, Dammam 32314, Saudi Arabia
| | - Saleh Al-Abdulhadi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Riyadh 11942, Saudi Arabia
- Dr. Saleh Office for Medical Genetic and Genetic Counseling Services, The House of Expertise, Prince Sattam Bin Abdulaziz University, Dammam 32411, Saudi Arabia
| | - Yahya Aldawood
- Department of Clinical Laboratory Sciences, Mohammed AlMana College of Health Sciences, Dammam 34222, Saudi Arabia
| | - Abdulmonem A. Alsaleh
- Department of Clinical Laboratory Sciences, Mohammed AlMana College of Health Sciences, Dammam 34222, Saudi Arabia
| | - Yousef N. Alhashem
- Department of Clinical Laboratory Sciences, Mohammed AlMana College of Health Sciences, Dammam 34222, Saudi Arabia
| | - Jenan A. Almatouq
- Department of Clinical Laboratory Sciences, Mohammed AlMana College of Health Sciences, Dammam 34222, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Shamsah H. Al-Ahmed
- Specialty Paediatric Medicine, Qatif Central Hospital, Qatif 32654, Saudi Arabia
| | - Firzan Nainu
- Department of Pharmacy, Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Ranjan K. Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar 758002, India
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Ullah S, Zahra QUA, Mansoorianfar M, Hussain Z, Ullah I, Li W, Kamya E, Mehmood S, Pei R, Wang J. Heavy Metal Ions Detection Using Nanomaterials-Based Aptasensors. Crit Rev Anal Chem 2022; 54:1399-1415. [PMID: 36018260 DOI: 10.1080/10408347.2022.2115287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Heavy metals ions as metallic pollutants are a growing global issue due to their adverse effects on the aquatic ecosystem, and human health. Unfortunately, conventional detection methods such as atomic absorption spectrometry exhibit a relatively low limit of detection and hold numerous disadvantages, and therefore, the development of an efficient method for in-situ and real-time detection of heavy metal residues is of great importance. The aptamer-based sensors offer distinct advantages over antibodies and emerged as a robust sensing platform against various heavy metals due to their high sensitivity, ease of production, simple operations, excellent specificity, better stability, low immunogenicity, and cost-effectiveness. The nucleic acid aptamers in conjugation with nanomaterials can bind to the metal ions with good specificity/selectivity and can be used for on-site monitoring of metal ion residues. This review aimed to provide background information about nanomaterials-based aptasensor, recent advancements in aptamer conjunction on nanomaterials surface, the role of nanomaterials in improving signal transduction, recent progress of nanomaterials-based aptasening procedures (from 2010 to 2022), and future perspectives toward the practical applications of nanomaterials-based aptasensors against hazardous metal ions for food safety and environmental monitoring.
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Affiliation(s)
- Salim Ullah
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Qurat Ul Ain Zahra
- Biomedical Imaging Center, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
- The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang, PR China
| | - Mojtaba Mansoorianfar
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
| | - Zahid Hussain
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Ismat Ullah
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
| | - Wenjing Li
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Edward Kamya
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Shah Mehmood
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Renjun Pei
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
| | - Jine Wang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, PR China
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, Anhui, PR China
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8
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Zeng S, Sun X, Wan X, Qian C, Yue W, Sohan ASMMF, Lin X, Yin B. A cascade Fermat spiral microfluidic mixer chip for accurate detection and logic discrimination of cancer cells. Analyst 2022; 147:3424-3433. [PMID: 35670058 DOI: 10.1039/d2an00689h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Since cancer has emerged as one of the most serious threats to human health, the highly sensitive determination of cancer cells is of significant importance to improve the accuracy of early clinical diagnosis. In our investigation, a novel cascade Fermat spiral microfluidic mixer chip (CFSMMC) combined with fluorescence sensors as a point-of-care (POC) testing system is successfully fabricated to detect and differentiate cancer cells (MCF-7) from normal cells with excellent sensitivity and selectivity. Here, copper ions (Cu2+) with peroxidase properties can catalyze the oxidation of the non-fluorescent substrate Amplex Red (AR) to the highly fluorescent resorufin (ox-AR) in the presence of hydrogen peroxide (H2O2). Subsequently, thanks to the quenching response of AS1411-AuNPs to ox-AR in the microchannel and the binding of AS1411 to nucleolin on the surface of cancer cells, a CFSMMC-based POC system is established for the highly sensitive detection and identification of human breast cancer cells in a "turn on" manner. The change in fluorescence intensity is linearly related to the concentration of MCF-7, ranging from 102 to 107 cells per mL with a limit of detection (LOD) as low as 17 cells per mL. Interestingly, the cascaded AND logic gate is integrated with CFSMMC for the first time to distinguish cancer cells from normal cells under the control of logic functions, which exhibits great potential in the development of one-step rapid and intelligent detection and logic discrimination.
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Affiliation(s)
- Shiyu Zeng
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Xiaocheng Sun
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China.
| | - Xinhua Wan
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Changcheng Qian
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Wenkai Yue
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
| | | | - Xiaodong Lin
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China.
| | - Binfeng Yin
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China.
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9
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Aithal S, Mishriki S, Gupta R, Sahu RP, Botos G, Tanvir S, Hanson RW, Puri IK. SARS-CoV-2 detection with aptamer-functionalized gold nanoparticles. Talanta 2022; 236:122841. [PMID: 34635231 PMCID: PMC8409056 DOI: 10.1016/j.talanta.2021.122841] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 12/15/2022]
Abstract
A rapid detection test for SARS-CoV-2 is urgently required to monitor virus spread and containment. Here, we describe a test that uses nanoprobes, which are gold nanoparticles functionalized with an aptamer specific to the spike membrane protein of SARS-CoV-2. An enzyme-linked immunosorbent assay confirms aptamer binding with the spike protein on gold surfaces. Protein recognition occurs by adding a coagulant, where nanoprobes with no bound protein agglomerate while those with sufficient bound protein do not. Using plasmon absorbance spectra, the nanoprobes detect 16 nM and higher concentrations of spike protein in phosphate-buffered saline. The time-varying light absorbance is examined at 540 nm to determine the critical coagulant concentration required to agglomerates the nanoprobes, which depends on the protein concentration. This approach detects 3540 genome copies/μl of inactivated SARS-CoV-2.
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Affiliation(s)
- Srivatsa Aithal
- Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Sarah Mishriki
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Rohit Gupta
- Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Rakesh P Sahu
- Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada; School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
| | - George Botos
- Genemis Laboratories, Cambridge, Ontario, Canada; Aptavid, New York, USA
| | | | | | - Ishwar K Puri
- Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada; School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada.
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10
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Mattarozzi M, Toma L, Bertucci A, Giannetto M, Careri M. Aptamer-based assays: strategies in the use of aptamers conjugated to magnetic micro- and nanobeads as recognition elements in food control. Anal Bioanal Chem 2021; 414:63-74. [PMID: 34245326 PMCID: PMC8748373 DOI: 10.1007/s00216-021-03501-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 11/30/2022]
Abstract
An outlook on the current status of different strategies for magnetic micro- and nanosized bead functionalization with aptamers as prominent bioreceptors is given with a focus on electrochemical and optical apta-assays, as well as on aptamer-modified magnetic bead–based miniaturized extraction techniques in food control. Critical aspects that affect interaction of aptamers with target molecules, as well as the possible side effects caused by aptamer interaction with other molecules due to non-specific binding, are discussed. Challenges concerning the real potential and limitations of aptamers as bioreceptors when facing analytical problems in food control are addressed.
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Affiliation(s)
- Monica Mattarozzi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Lorenzo Toma
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Alessandro Bertucci
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Marco Giannetto
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Maria Careri
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy.
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11
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Rabiee N, Khatami M, Jamalipour Soufi G, Fatahi Y, Iravani S, Varma RS. Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances. ACS Biomater Sci Eng 2021; 7:3053-3068. [PMID: 34152742 DOI: 10.1021/acsbiomaterials.1c00475] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diatoms are unicellular microalga found in soil and almost every aquatic environment (marine and fresh water). Biogenic silica and diatoms are attractive for biotechnological and industrial applications, especially in the field of biomedicine, industrial/synthetic manufacturing processes, and biomedical/pharmaceutical sciences. Deposition of silica by diatoms allows them to create micro- or nanoscale structures which may be utilized in nanomedicine and especially in drug/gene delivery. Diatoms with their unique architectures, good thermal stability, suitable surface area, simple chemical functionalization/modification procedures, ease of genetic manipulations, optical/photonic characteristics, mechanical resistance, and eco-friendliness, can be utilized as smart delivery platforms. The micro- to nanoscale properties of the diatom frustules have garnered a great deal of attention for their application in diverse areas of nanotechnology and biotechnology, such as bioimaging/biosensing, biosensors, drug/gene delivery, photodynamic therapy, microfluidics, biophotonics, solar cells, and molecular filtrations. Additionally, the genetically engineered diatom microalgae-derived nanoporous biosilica have enabled the targeted anticancer drug delivery to neuroblastoma and B-lymphoma cells as well as the mouse xenograft model of neuroblastoma. In this perspective, current trends and recent advances related to the applications of diatoms for the synthesis of nanoparticles, gene/drug delivery, biosensing determinations, biofuel production, and remediation of heavy metals are deliberated, including the underlying significant challenges and future perspectives.
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Affiliation(s)
- Navid Rabiee
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Mehrdad Khatami
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran.,Cell Therapy and Regenerative Medicine Comprehensive Center, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Yousef Fatahi
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University in Olomouc, Slechtitelu 27, 783 71, Olomouc, Czech Republic
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12
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Rawal S, Patel M. Bio-Nanocarriers for Lung Cancer Management: Befriending the Barriers. NANO-MICRO LETTERS 2021; 13:142. [PMID: 34138386 PMCID: PMC8196938 DOI: 10.1007/s40820-021-00630-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/23/2021] [Indexed: 05/03/2023]
Abstract
Lung cancer is a complex thoracic malignancy developing consequential to aberrations in a myriad of molecular and biomolecular signaling pathways. It is one of the most lethal forms of cancers accounting to almost 1.8 million new annual incidences, bearing overall mortality to incidence ratio of 0.87. The dismal prognostic scenario at advanced stages of the disease and metastatic/resistant tumor cell populations stresses the requisite of advanced translational interdisciplinary interventions such as bionanotechnology. This review article deliberates insights and apprehensions on the recent prologue of nanobioengineering and bionanotechnology as an approach for the clinical management of lung cancer. The role of nanobioengineered (bio-nano) tools like bio-nanocarriers and nanobiodevices in secondary prophylaxis, diagnosis, therapeutics, and theranostics for lung cancer management has been discussed. Bioengineered, bioinspired, and biomimetic bio-nanotools of considerate translational value have been reviewed. Perspectives on existent oncostrategies, their critical comparison with bio-nanocarriers, and issues hampering their clinical bench side to bed transformation have also been summarized.
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Affiliation(s)
- Shruti Rawal
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382 481, India
| | - Mayur Patel
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382 481, India.
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13
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Kim HR, Kim M, Kim BC. Specific detection of Cronobacter sakazakii in powdered infant formula using ssDNA aptamer. Analyst 2021; 146:3534-3542. [PMID: 33884389 DOI: 10.1039/d1an00118c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Cronobacter sakazakii (C. sakazakii) is a foodborne pathogen associated with bacterial meningitis, sepsis, and necrotizing enterocolitis in premature and immuno-compromised infants. C. sakazakii is typically acquired by ingesting contaminated powdered infant formula (PIF). The growing demand for a safe food supply requires rapid detection of foodborne pathogens for delivering safe-to-consume food to consumers. In the present study, we isolated C. sakazakii-specific aptamers using a centrifugation-based partitioning method (CBPM) instead of systematic evolution of ligands by exponential enrichment (SELEX) process. Unlike SELEX, the CBPM reduces the evolution-loop time to obtain enriched probes, allowing the isolation of target-specific aptamers in a shorter time. The two aptamers (SC25 and SC45) isolated using the CBPM showed high affinity and specificity for C. sakazakii (Kd: 34 and 66 nM). Among the two aptamers, SC25 aptamer detected efficiently C. sakazakii in PIF with less cross-reactivity. Our results indicate that the isolated aptamers could be used for detecting C. sakazakii in PIF and reducing the overall testing time compared with the conventional C. sakazakii detection method.
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Affiliation(s)
- Hye Ri Kim
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Division of Energy and Environment Technology, KIST School, University of Science and Technology (UST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Myunghee Kim
- Department of Food Science and Technology, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea
| | - Byoung Chan Kim
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. and Division of Energy and Environment Technology, KIST School, University of Science and Technology (UST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
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14
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Wu L, Wang Y, Xu X, Liu Y, Lin B, Zhang M, Zhang J, Wan S, Yang C, Tan W. Aptamer-Based Detection of Circulating Targets for Precision Medicine. Chem Rev 2021; 121:12035-12105. [PMID: 33667075 DOI: 10.1021/acs.chemrev.0c01140] [Citation(s) in RCA: 252] [Impact Index Per Article: 84.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The past decade has witnessed ongoing progress in precision medicine to improve human health. As an emerging diagnostic technique, liquid biopsy can provide real-time, comprehensive, dynamic physiological and pathological information in a noninvasive manner, opening a new window for precision medicine. Liquid biopsy depends on the sensitive and reliable detection of circulating targets (e.g., cells, extracellular vesicles, proteins, microRNAs) from body fluids, the performance of which is largely governed by recognition ligands. Aptamers are single-stranded functional oligonucleotides, capable of folding into unique tertiary structures to bind to their targets with superior specificity and affinity. Their mature evolution procedure, facile modification, and affinity regulation, as well as versatile structural design and engineering, make aptamers ideal recognition ligands for liquid biopsy. In this review, we present a broad overview of aptamer-based liquid biopsy techniques for precision medicine. We begin with recent advances in aptamer selection, followed by a summary of state-of-the-art strategies for multivalent aptamer assembly and aptamer interface modification. We will further describe aptamer-based micro-/nanoisolation platforms, aptamer-enabled release methods, and aptamer-assisted signal amplification and detection strategies. Finally, we present our perspectives regarding the opportunities and challenges of aptamer-based liquid biopsy for precision medicine.
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Affiliation(s)
- Lingling Wu
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yidi Wang
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xing Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yilong Liu
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Bingqian Lin
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mingxia Zhang
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jialu Zhang
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Shuang Wan
- Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Chaoyong Yang
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.,Collaborative Innovation Center of Chemistry for Energy Materials, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Weihong Tan
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.,Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, China.,The Cancer Hospital of the University of Chinese Academy of Sciences, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
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15
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Mochizuki C, Nakamura J, Nakamura M. Development of Non-Porous Silica Nanoparticles towards Cancer Photo-Theranostics. Biomedicines 2021; 9:73. [PMID: 33451074 PMCID: PMC7828543 DOI: 10.3390/biomedicines9010073] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/09/2021] [Indexed: 02/07/2023] Open
Abstract
Nanoparticles have demonstrated several advantages for biomedical applications, including for the development of multifunctional agents as innovative medicine. Silica nanoparticles hold a special position among the various types of functional nanoparticles, due to their unique structural and functional properties. The recent development of silica nanoparticles has led to a new trend in light-based nanomedicines. The application of light provides many advantages for in vivo imaging and therapy of certain diseases, including cancer. Mesoporous and non-porous silica nanoparticles have high potential for light-based nanomedicine. Each silica nanoparticle has a unique structure, which incorporates various functions to utilize optical properties. Such advantages enable silica nanoparticles to perform powerful and advanced optical imaging, from the in vivo level to the nano and micro levels, using not only visible light but also near-infrared light. Furthermore, applications such as photodynamic therapy, in which a lesion site is specifically irradiated with light to treat it, have also been advancing. Silica nanoparticles have shown the potential to play important roles in the integration of light-based diagnostics and therapeutics, termed "photo-theranostics". Here, we review the recent development and progress of non-porous silica nanoparticles toward cancer "photo-theranostics".
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Affiliation(s)
- Chihiro Mochizuki
- Department of Organ Anatomy & Nanomedicine, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan; (C.M.); (J.N.)
- Core Clusters for Research Initiatives of Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Junna Nakamura
- Department of Organ Anatomy & Nanomedicine, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan; (C.M.); (J.N.)
- Core Clusters for Research Initiatives of Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Michihiro Nakamura
- Department of Organ Anatomy & Nanomedicine, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan; (C.M.); (J.N.)
- Core Clusters for Research Initiatives of Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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16
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Wang Y, Li Z, Yu H. Aptamer-Based Western Blot for Selective Protein Recognition. Front Chem 2020; 8:570528. [PMID: 33195056 PMCID: PMC7658645 DOI: 10.3389/fchem.2020.570528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/21/2020] [Indexed: 11/13/2022] Open
Abstract
Selective protein recognition is critical in molecular biology techniques such as Western blotting and ELISA. Successful detection of the target proteins in these methods relies on the specific interaction of the antibodies, which often bring a high production cost and require a long incubation time. Aptamers represent an alternative class of simple and affordable affinity reagents for protein recognition, and replacing antibodies with aptamers in Western blotting would potentially be more time- and cost-effective. In this work, multiple fluorescent DNA aptamers were isolated by in vitro selection to selectively label commonly used tag proteins including GST, MBP, and His-tag. The generated aptamers G1, M1, and H1 specifically bound to their cognate target proteins with nanomolar affinities, respectively. Compared with conventional antibody-based immunoblotting, such aptamer-based procedure gave a cleaner background and was able to selectively label target protein in a complex mixture. Lastly, the identified aptamers were also effective in recognition of different fusion proteins with the same tag, thus greatly expanding the scope of the potential applications of these aptamers. This work provided aptamers as useful molecular tools for selective protein recognition in Western blotting analysis.
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Affiliation(s)
- Yao Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, China.,State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, China.,Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China
| | - Zhe Li
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, China.,State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, China
| | - Hanyang Yu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, China.,State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, China.,Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China
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17
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Alafeef M, Moitra P, Pan D. Nano-enabled sensing approaches for pathogenic bacterial detection. Biosens Bioelectron 2020; 165:112276. [PMID: 32729465 DOI: 10.1016/j.bios.2020.112276] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 01/16/2023]
Abstract
Infectious diseases caused by pathogenic bacteria, especially antibiotic-resistant bacteria, are one of the biggest threats to global health. To date, bacterial contamination is detected using conventional culturing techniques, which are highly dependent on expert users, limited by the processing time and on-site availability. Hence, real-time and continuous monitoring of pathogen levels is required to obtain valuable information that could assist health agencies in guiding prevention and containment of pathogen-related outbreaks. Nanotechnology-based smart sensors are opening new avenues for early and rapid detection of such pathogens at the patient's point-of-care. Nanomaterials can play an essential role in bacterial sensing owing to their unique optical, magnetic, and electrical properties. Carbon nanoparticles, metallic nanoparticles, metal oxide nanoparticles, and various types of nanocomposites are examples of smart nanomaterials that have drawn intense attention in the field of microbial detection. These approaches, together with the advent of modern technologies and coupled with machine learning and wireless communication, represent the future trend in the diagnosis of infectious diseases. This review provides an overview of the recent advancements in the successful harnessing of different nanoparticles for bacterial detection. In the beginning, we have introduced the fundamental concepts and mechanisms behind the design and strategies of the nanoparticles-based diagnostic platform. Representative research efforts are highlighted for in vitro and in vivo detection of bacteria. A comprehensive discussion is then presented to cover the most commonly adopted techniques for bacterial identification, including some seminal studies to detect bacteria at the single-cell level. Finally, we discuss the current challenges and a prospective outlook on the field, together with the recommended solutions.
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Affiliation(s)
- Maha Alafeef
- Bioengineering Department, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Biomedical Engineering Department, Jordan University of Science and Technology, Irbid, 22110, Jordan; Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Baltimore School of Medicine, 670 W Baltimore St., Baltimore, MD, 21201, United States
| | - Parikshit Moitra
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Baltimore School of Medicine, 670 W Baltimore St., Baltimore, MD, 21201, United States; Department of Pediatrics, University of Maryland Baltimore School of Medicine, 670 W Baltimore St., Baltimore, MD, 21201, United States
| | - Dipanjan Pan
- Bioengineering Department, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Baltimore School of Medicine, 670 W Baltimore St., Baltimore, MD, 21201, United States; Department of Pediatrics, University of Maryland Baltimore School of Medicine, 670 W Baltimore St., Baltimore, MD, 21201, United States; Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, 1000 Hiltop Circle, Baltimore, MD, 21250, United States.
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18
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Jose J, Thomas AM, Mendonsa D, Al-Sanea MM, Uddin MS, Parambi DGT, Charyulu RN, Mathew B. Aptamers in Drug Design: An Emerging Weapon to Fight a Losing Battle. Curr Drug Targets 2020; 20:1624-1635. [PMID: 31362673 DOI: 10.2174/1389450120666190729121747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 11/22/2022]
Abstract
Implementation of novel and biocompatible polymers in drug design is an emerging and rapidly growing area of research. Even though we have a large number of polymer materials for various applications, the biocompatibility of these materials remains as a herculean task for researchers. Aptamers provide a vital and efficient solution to this problem. They are usually small (ranging from 20 to 60 nucleotides, single-stranded DNA or RNA oligonucleotides which are capable of binding to molecules possessing high affinity and other properties like specificity. This review focuses on different aspects of Aptamers in drug discovery, starting from its preparation methods and covering the recent scenario reported in the literature regarding their use in drug discovery. We address the limitations of Aptamers and provide valuable insights into their future potential in the areas regarding drug discovery research. Finally, we explained the major role of Aptamers like medical imaging techniques, application as synthetic antibodies, and the most recent application, which is in combination with nanomedicines.
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Affiliation(s)
- Jobin Jose
- Department of Pharmaceutics, N.G.S.M. Institute of Pharmaceutical Sciences, NITTE Deemed to be University, Mangalore, India
| | - Aaron Mathew Thomas
- Department of Pharmaceutics, N.G.S.M. Institute of Pharmaceutical Sciences, NITTE Deemed to be University, Mangalore, India
| | - Darewin Mendonsa
- Department of Pharmaceutics, N.G.S.M. Institute of Pharmaceutical Sciences, NITTE Deemed to be University, Mangalore, India
| | - Mohammad M Al-Sanea
- College of Pharmacy, Department of Pharmaceutical Chemistry, Jouf University, Sakaka, Al Jouf-2014, Saudi Arabia
| | - Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh.,Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Della Grace Thomas Parambi
- College of Pharmacy, Department of Pharmaceutical Chemistry, Jouf University, Sakaka, Al Jouf-2014, Saudi Arabia
| | - R Narayana Charyulu
- Department of Pharmaceutics, N.G.S.M. Institute of Pharmaceutical Sciences, NITTE Deemed to be University, Mangalore, India
| | - Bijo Mathew
- Division of Drug Design and Medicinal Chemistry Research Lab, Department of Pharmaceutical Chemistry, Ahalia School of Pharmacy, Palakkad 678557, Kerala, India
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19
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Qian W, Miao Z, Zhang XJ, Yang XT, Tang YY, Tang YY, Hu LY, Li S, Zhu D, Cheng H. Functionalized reduced graphene oxide with aptamer macroarray for cancer cell capture and fluorescence detection. Mikrochim Acta 2020; 187:407. [PMID: 32594259 DOI: 10.1007/s00604-020-04402-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/17/2020] [Indexed: 12/29/2022]
Abstract
An integrated aptamer macroarray functionalized with reduced graphene oxide (rGO) to specifically capture and sensitively detect cancer cells is reported. The capture for cancer cells is based on effective recognition of the modified rGO surface through the aptamer against epithelial cell adhesion molecule (EpCAM). The rough structure of rGO enhances morphologic interactions between rGO film interface and the cancer cells, while super-hydrophilicity of modified rGO hinders nonspecific cell capture. The synergistic interactions offer the aptamer macroarray high efficiency of cancer cell capture. By means of a turn-on fluorescence strategy based on the conformation change of the aptamer induced by the target recognition, the enriched cancer cells can be directly read out at excitation/emission wavelengths of 550/680 nm without washing, separation, and dying steps. The working range is 1 × 102 to 2 × 104 cells per mL with a detection limit of 22 cells per mL. The results indicate that the aptamer macroarray has a considerable foreground for early diagnosis, therapy, and monitoring of cancer. Graphical abstract.
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Affiliation(s)
- Wenhui Qian
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Zhaoyi Miao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Xiao-Jing Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Xiao-Tong Yang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Ying-Ying Tang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Yu Ying Tang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Lin Yu Hu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Su Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China
| | - Dong Zhu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, People's Republic of China. .,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing, China.
| | - Haibo Cheng
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine Prevention and Treatment of Tumor, the First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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20
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Rabiee N, Ahmadi S, Arab Z, Bagherzadeh M, Safarkhani M, Nasseri B, Rabiee M, Tahriri M, Webster TJ, Tayebi L. Aptamer Hybrid Nanocomplexes as Targeting Components for Antibiotic/Gene Delivery Systems and Diagnostics: A Review. Int J Nanomedicine 2020; 15:4237-4256. [PMID: 32606675 PMCID: PMC7314593 DOI: 10.2147/ijn.s248736] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/01/2020] [Indexed: 12/11/2022] Open
Abstract
With the passage of time and more advanced societies, there is a greater emergence and incidence of disease and necessity for improved treatments. In this respect, nowadays, aptamers, with their better efficiency at diagnosing and treating diseases than antibodies, are at the center of attention. Here, in this review, we first investigate aptamer function in various fields (such as the detection and remedy of pathogens, modification of nanoparticles, antibiotic delivery and gene delivery). Then, we present aptamer-conjugated nanocomplexes as the main and efficient factor in gene delivery. Finally, we focus on the targeted co-delivery of genes and drugs by nanocomplexes, as a new exciting approach for cancer treatment in the decades ahead to meet our growing societal needs.
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Affiliation(s)
- Navid Rabiee
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zeynab Arab
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | | | - Moein Safarkhani
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Behzad Nasseri
- Chemical Engineering Department and Bioengineering Division, Hacettepe University, Beytepe, Ankara06800, Turkey
- Chemical Engineering and Applied Chemistry Department, Atilim University, Ankara, Turkey
| | - Mohammad Rabiee
- Biomaterial Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | | | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA02115, USA
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI53233, USA
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21
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Dekhili R, Cherni K, Liu H, Li X, Djaker N, Spadavecchia J. Aptamer-Gold(III) Complex Nanoparticles: A New Way to Detect Cu, Zn SOD Glycoprotein. ACS OMEGA 2020; 5:13851-13859. [PMID: 32566851 PMCID: PMC7301578 DOI: 10.1021/acsomega.0c01192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/21/2020] [Indexed: 05/25/2023]
Abstract
Aptamers are small biomolecules composed of 20-100 nucleotides that recognize target molecules in three-dimensional structures. These natural targeting molecules have attracted interest in the biomedical field as biomarkers for cancer diagnostics. In this study, we investigated the interaction of a characteristic aptamer with its target protein, Cu, Zn superoxide dismutase (SOD 4), on a gold nanoparticle (AuNP) surface under experimental conditions. For this purpose, we applied two protocols to coat SOD 4 aptamer (APT) on the nanoparticle surface: carbodiimide chemistry (EDC/NHS) (Method ON) and a complexation methodology (Method IN). The nano-aptamer's interactions with SOD 4 were detected by UV-vis absorption and Raman spectroscopy in a range of protein concentrations (from 1 μM to 50 nM). We believe that the interaction is heavily dependent on the nature of the biomarker (SOD 4) and also on the steric arrangement of the aptamer on the gold nanoparticle surface. The lowest detectable concentration (limit of detection, LOD) was about 2 nM for APT IN PEG-AuNPs and 8 nM for APT ON PEG-AuNPs. For the first time, we demonstrated a very sensitive detection of SOD 4 in the nanomolar concentration range with new ways of biosensor synthesis (APT IN and ON), providing a very strong tool to understand the effect of aptamer conformation to detect SOD 4.
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Affiliation(s)
- Rawdha Dekhili
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Khaoula Cherni
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Hui Liu
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Xiaowu Li
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Nadia Djaker
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Jolanda Spadavecchia
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
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22
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Abstract
Aptasensors form a class of biosensors that function on the basis of a biological recognition. An aptasensor is advantageous because it incorporates a unique biologic recognition element, i.e., an aptamer, coupled to a transducer to convert a biological interaction to readable signals that can be easily processed and reported. In such biosensors, the specificity of aptamers is comparable to and sometimes even better than that of antibodies. Using the SELEX technique, aptamers with high specificity and affinity to various targets can be isolated from large pools of different oligonucleotides. Nowadays, new modifications of the SELEX technique and, as a result, easy generation and synthesis of aptamers have led to the wide application of these materials as biological receptors in biosensors. In this regard, aptamers promise a bright future. In the present research a brief account is initially provided of the recent developments in aptasensors for various targets. Then, immobilization methods, design strategies, current limitations and future directions are discussed for aptasensors.
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Affiliation(s)
- Laleh Hosseinzadeh
- Department of Chemistry, Dehloran Branch, Islamic Azad University, Dehloran, Iran
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23
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Jeevanandam J, Tan KX, Danquah MK, Guo H, Turgeson A. Advancing Aptamers as Molecular Probes for Cancer Theranostic Applications-The Role of Molecular Dynamics Simulation. Biotechnol J 2020; 15:e1900368. [PMID: 31840436 DOI: 10.1002/biot.201900368] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/06/2019] [Indexed: 12/24/2022]
Abstract
Theranostics cover emerging technologies for cell biomarking for disease diagnosis and targeted introduction of drug ingredients to specific malignant sites. Theranostics development has become a significant biomedical research endeavor for effective diagnosis and treatment of diseases, especially cancer. An efficient biomarking and targeted delivery strategy for theranostic applications requires effective molecular coupling of binding ligands with high affinities to specific receptors on the cancer cell surface. Bioaffinity offers a unique mechanism to bind specific target and receptor molecules from a range of non-targets. The binding efficacy depends on the specificity of the affinity ligand toward the target molecule even at low concentrations. Aptamers are fragments of genetic materials, peptides, or oligonucleotides which possess enhanced specificity in targeting desired cell surface receptor molecules. Aptamer-target binding results from several inter-molecular interactions including hydrogen bond formation, aromatic stacking of flat moieties, hydrophobic interaction, electrostatic, and van der Waals interactions. Advancements in Systematic Evolution of Ligands by Exponential Enrichment (SELEX) assay has created the opportunity to artificially generate aptamers that specifically bind to desired cancer and tumor surface receptors with high affinities. This article discusses the potential application of molecular dynamics (MD) simulation to advance aptamer-mediated receptor targeting in targeted cancer therapy. MD simulation offers real-time analysis of the molecular drivers of the aptamer-receptor binding and generate optimal receptor binding conditions for theranostic applications. The article also provides an overview of different cancer types with focus on receptor biomarking and targeted treatment approaches, conventional molecular probes, and aptamers that have been explored for cancer cells targeting.
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Affiliation(s)
- Jaison Jeevanandam
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, Miri, Sarawak, 98009, Malaysia
| | - Kei Xian Tan
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798
| | | | - Haobo Guo
- Department of Computer Science and Engineering, University of Tennessee, Chattanooga, TN, 37403, USA.,SimCenter, University of Tennessee, Chattanooga, TN, 37403, USA
| | - Andrew Turgeson
- Chemical Engineering Department, University of Tennessee, Chattanooga, TN, 37403, USA
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24
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Vajhadin F, Ahadian S, Travas-Sejdic J, Lee J, Mazloum-Ardakani M, Salvador J, Aninwene GE, Bandaru P, Sun W, Khademhossieni A. Electrochemical cytosensors for detection of breast cancer cells. Biosens Bioelectron 2019; 151:111984. [PMID: 31999590 DOI: 10.1016/j.bios.2019.111984] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/12/2019] [Accepted: 12/21/2019] [Indexed: 02/04/2023]
Abstract
Breast cancer is one of lethal cancers among women with its metastasis leading to cancer-related morbidity and mortality. Circulating tumor cells (CTCs) derived from a primary tumor can be detected in the venous blood of cancer patients. Monitoring CTCs in blood samples has increased exponentially over the past decades and holds great promise in the diagnosis and treatment of metastatic breast cancer. Electrochemical cytosensors, classified as a class of electrochemical biosensors for sensitive detection and enumeration of targeted cells with minimally invasive methods, have the advantages of electrochemical biosensors, such as simplicity, low cost, and low limit of detection. Here, we review recent progress in the detection of CTCs from breast cancer with a focus on electrochemical cytosensors. This review describes platforms benefiting from these cytosensors to identify cancerous breast cells. Furthermore, strategies for signal amplification and also generation of reusable electrochemical cytosensors are introduced. In addition, breast cancer markers and biorecognition elements for cell capturing are reviewed.
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Affiliation(s)
- Fereshteh Vajhadin
- Department of Chemistry, University of Yazd, Yazd, Yazd, 89195-741, Iran; Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Samad Ahadian
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Jadranka Travas-Sejdic
- Polymer Electronics Research Centre, School of Chemical Sciences, The University of Auckland, Auckland, 1010, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, 6140, New Zealand
| | - Junmin Lee
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | | | - Jocelynda Salvador
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - George E Aninwene
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Praveen Bandaru
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Wujin Sun
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA
| | - Ali Khademhossieni
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, 90095, USA; Department of Radiological Sciences, University of California-Los Angeles, Los Angeles, CA, 90095, USA; Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA, 90095, USA.
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25
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Guo QY, Ren SY, Wang JY, Li Y, Yao ZY, Huang H, Gao ZX, Yang SP. Low field nuclear magnetic sensing technology based on hydrogel-coated superparamagnetic particles. Anal Chim Acta 2019; 1094:151-159. [PMID: 31761042 DOI: 10.1016/j.aca.2019.10.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/06/2019] [Accepted: 10/09/2019] [Indexed: 12/14/2022]
Abstract
Based on superparamagnetic nanoparticles, a responsive polyacrylamide hydrogel self-assembled by nucleic acid hairpin hybridization chain reaction was designed, and a universal low field nuclear magnetic resonance sensing platform was successfully constructed. As the target was gradually added, the hydrogel coating on the surface of the magnetic nanoparticle was opened layer by layer through binding with the aptamer, which specifically bonded thereto, causing different degrees of exposure of the magnetic nanoparticle, resulting in changes of low field nuclear magnetic resonance signals. This method was originally applied to the rapid detection of adenosine triphosphate (ATP), and the versatility of the method was verified using polychlorinated biphenyl 77 (PCB77). This method had the advantage of being fast, convenient, and low cost, and it can be easily operated with high repeatability. This universal method can detect a variety of targets by replacing aptamers and may be useful in controlling food quality and for rapidly detecting cancer cells in vitro.
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Affiliation(s)
- Qi-Yue Guo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China; Shanghai Normal University, School of Chemistry and Materials Science, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China
| | - Shu-Yue Ren
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China
| | - Jing-Yi Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China
| | - Ye Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China; Shanghai Normal University, School of Chemistry and Materials Science, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China
| | - Zi-Yi Yao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China; Shanghai Normal University, School of Chemistry and Materials Science, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China
| | - Hui Huang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China; Shanghai Normal University, School of Chemistry and Materials Science, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China
| | - Zhi-Xian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, 300050, China.
| | - Shi-Ping Yang
- Shanghai Normal University, School of Chemistry and Materials Science, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China.
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26
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Pourreza N, Ghomi M. Hydrogel based aptasensor for thrombin sensing by Resonance Rayleigh Scattering. Anal Chim Acta 2019; 1079:180-191. [PMID: 31387709 DOI: 10.1016/j.aca.2019.06.049] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/02/2019] [Accepted: 06/22/2019] [Indexed: 12/12/2022]
Abstract
In this research, a novel Resonance Rayleigh Scattering (RRS) aptasensor was developed for thrombin monitoring using in-situ synthesized and embedded Au nanoparticles (AuNPs) into poly vinyl alcohol -borax hydrogel (PBH). Thiolated-thrombin binding aptamer (thiolated-TBA) was attached to the surface of AuNPs embedded into PBH to design the PBH-aptasensor for thrombin detection (thiolated-TBA@AuNPs-PBH). To verify the characteristic and morphology of PBH nanocomposite, energy dispersive X-ray analysis, TEM, average particle size analizer and UV-Vis spectra were performed. The difference in RRS intensities in the absence and presence of thrombin was calculated and selected as the monitoring signal. Effect of different parameters on the RRS signal was investigated at excitation wavelength of 500 nm. Under the approved conditions, the linear detection range was validated over the concentration of 0.70 pM- 0.02 μM. The limit of detection based on 3Sb was 0.10 pM. The relative standard deviation for 5.6 pM and 3.6 nM were 4.0 and 2.7% (n = 10), respectively. The proposed aptasensor was successfully applied as an experimental model for thrombin detection in serum samples of healthy volunteers with acceptable results.
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Affiliation(s)
- Nahid Pourreza
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Matineh Ghomi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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27
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Zhao Y, Ma W, Zou S, Chen B, Cheng H, He X, Wang K. Terminal deoxynucleotidyl transferase-initiated molecule beacons arrayed aptamer probe for sensitive detection of metastatic colorectal cancer cells. Talanta 2019; 202:152-158. [PMID: 31171163 DOI: 10.1016/j.talanta.2019.04.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is the third most commonly diagnosed cancer in the world, which can lead to considerably high mortality rate. It was reported that the prognosis is extremely poor and survival is often measured in months once CRC metastases become clinically evident. Therefore, the development of effective approach for metastatic CRC cells detection and imaging may potentially be significant and helpful for CRC prognosis and treatment. Therefore, we proposed a sensitive and specific approach for high-metastatic CRC LoVo cells detection and imaging by using terminal deoxynucleotidyl transferase (TdT)-initiated molecule beacons (MBs) arrayed fluorescent aptamer probes (denoted as TMAP). In this approach, the aptamer W3 targeting high-metastatic CRC LoVo cells was elongated to form W3-poly A at the 3'-hydroxyl terminus with repeated A bases in the presence of TdT and dATP. The MBs designed with poly T sequence in the loop were then hybridized with the poly A in the aptamer W3. The TMAP was easily constructed without the need of aptamer modification. It was demonstrated that this approach could specifically detect and image the high-metastatic CRC LoVo cells from the mixture of high-metastatic CRC LoVo cells and non-metastatic HCT-8 cells. Compared with 6-carboxyfluorescein (6-FAM) labeled aptamer W3, the TMAP was demonstrated to have a much stronger fluorescence signal on the target cells, realizing a 4-fold increase in signal-to-background ratio (SBR). Determination by flow cytometry allowed for detection of as low as 23 CRC LoVo cells in 200 μL cell culture medium. The high sensitivity and the capability for using in complicate biological samples imply that this approach holds considerable potential for metastatic CRC detection and therapy.
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Affiliation(s)
- Yujie Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China
| | - Wenjie Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China
| | - Shanzi Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China
| | - Biao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China
| | - Hong Cheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China.
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecule Engineering of Hunan Province, Changsha, 410082, China.
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28
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Chen Y, Wang W, Tyagi D, Carrier AJ, Cui S, He S, Zhang X. Non-invasive isolation of rare circulating tumor cells with a DNA mimic of double-sided tape using multimeric aptamers. NANOSCALE 2019; 11:5879-5883. [PMID: 30869719 DOI: 10.1039/c9nr00364a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Circulating tumor cells (CTCs) are indicative for cancer diagnosis and prognosis. However, conventional immuno-magnetic cell capture technologies using antibody- and aptamer-functionalized magnetic particles generate increased intracellular oxidative stress through endocytosis. Herein, we efficiently, selectively, and non-invasively isolate CTCs from whole blood by mimicking double-sided tape using DNA.
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Affiliation(s)
- Yongli Chen
- Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen, 518055, China
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29
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Bashmakova EE, Krasitskaya VV, Zamay GS, Zamay TN, Frank LA. Bioluminescent aptamer-based solid-phase microassay to detect lung tumor cells in plasma. Talanta 2019; 199:674-678. [PMID: 30952314 DOI: 10.1016/j.talanta.2019.03.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/02/2019] [Accepted: 03/05/2019] [Indexed: 12/15/2022]
Abstract
Two high-affinity DNA aptamers for lung tumor cells were applied as biospecific elements in bioluminescent assay of patient blood. The oligonucleotide complementary to the 5' end of both aptamers carrying either biotin or Ca2+-regulated photoprotein obelin was used to form a sandwich-type analytical complex on the surfaces of magnetic streptavidin-activated microspherical particles. Clinical blood samples from cases of morphologically confirmed lung cancer and control samples were analyzed applying the developed assay. From the receiver operator curve (ROC) analysis, the chosen threshold value as clinical decision limit offers the sensitivity of 91.5% and the specificity of 75% (p < 0.001). The area under ROC curve with the value of 0.901 distinguishes well between the two groups under investigation.
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Affiliation(s)
- Eugenia E Bashmakova
- Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS, Akademgorodok 50/50, 660036 Krasnoyarsk, Russia; Siberian Federal University, Svobodny pr. 79, 660041 Krasnoyarsk, Russia
| | - Vasilisa V Krasitskaya
- Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS, Akademgorodok 50/50, 660036 Krasnoyarsk, Russia
| | - Galina S Zamay
- State Medical University named after V.F. Voyno-Yasenetsky, Partizana Zheleznyaka St. 1, 660022 Krasnoyarsk, Russia
| | - Tatiana N Zamay
- State Medical University named after V.F. Voyno-Yasenetsky, Partizana Zheleznyaka St. 1, 660022 Krasnoyarsk, Russia
| | - Ludmila A Frank
- Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS, Akademgorodok 50/50, 660036 Krasnoyarsk, Russia; Siberian Federal University, Svobodny pr. 79, 660041 Krasnoyarsk, Russia.
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30
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Li J, Jiang H, Rao X, Liu Z, Zhu H, Xu Y. Point-of-Care Testing of Pathogenic Bacteria at the Single-Colony Level via Gas Pressure Readout Using Aptamer-Coated Magnetic CuFe 2O 4 and Vancomycin-Capped Platinum Nanoparticles. Anal Chem 2019; 91:1494-1500. [PMID: 30586297 DOI: 10.1021/acs.analchem.8b04584] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Pressure measurements are performed everyday with simple devices, and in the field of analytical chemistry the pressure-based signaling strategy offers two important advantages, signal amplification and particular applicability in point-of-care settings. Herein, by using vancomycin (Van)-functionalized platinum nanoparticles (PtNPs@Van) and aptamer-coated magnetic CuFe2O4 nanoprobes dual-recognition units integrated with a catalyzed breakdown of H2O2 for O2 generation, we demonstrated that gas pressure can be used as a readout means for highly sensitive pathogenic bacteria identification and quantification. Using Staphylococcus aureus ( S. aureus) as a test case, integration of the molecular dual-recognition component with the catalyzed gas-generation reaction leads to a significant pressure change (Δ P), and the correlation between the concentration of S. aureus and the Δ P signal was found to be linear from 5.0 to 1.0 × 104 cfu/mL with a detection limit of 1.0 cfu/mL. Other nontarget bacteria show negative results, verifying the high specificity of the present strategy. When employed to assay S. aureus in saliva and milk samples, the approach shows recoveries from 93.3% to 107.1% with relative standard derivation (RSD) less than 8.8%. By the integration of catalyzed gas-generation reaction with the designed molecular recognition event, obviously the pressure-based signaling strategy could facilitate pathogenic bacteria identification and quantification not only in the laboratory but also in point-of-care settings, which could have great potential in the application of food safety and infectious disease diagnosis.
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31
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Sekhon SS, Ahn G, Sekhon SS, Ahn JY, Kim YH. Bioengineered aptamer-nanoconjugates for cancer theragnosis. Mol Cell Toxicol 2018. [DOI: 10.1007/s13273-018-0040-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Aptamers as Diagnostic Tools in Cancer. Pharmaceuticals (Basel) 2018; 11:ph11030086. [PMID: 30208607 PMCID: PMC6160954 DOI: 10.3390/ph11030086] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/30/2018] [Accepted: 09/02/2018] [Indexed: 02/08/2023] Open
Abstract
Cancer is the second leading cause of death worldwide. Researchers have been working hard on investigating not only improved therapeutics but also on early detection methods, both critical to increasing treatment efficacy, and developing methods for disease prevention. The use of nucleic acids, or aptamers, has emerged as more specific and accurate cancer diagnostic and therapeutic tools. Aptamers are single-stranded DNA or RNA molecules that recognize specific targets based on unique three-dimensional conformations. Despite the fact aptamer development has been mainly restricted to laboratory settings, the unique attributes of these molecules suggest their high potential for clinical advances in cancer detection. Aptamers can be selected for a wide range of targets, and also linked with an extensive variety of diagnostic agents, via physical or chemical conjugation, to improve previously-established detection methods or to be used as novel biosensors for cancer diagnosis. Consequently, herein we review the principal considerations and recent updates in cancer detection and imaging through aptamer-based molecules.
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33
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Wang J, Dong HY, Zhou Y, Han LY, Zhang T, Lin M, Wang C, Xu H, Wu ZS, Jia L. Immunomagnetic antibody plus aptamer pseudo-DNA nanocatenane followed by rolling circle amplication for highly-sensitive CTC detection. Biosens Bioelectron 2018; 122:239-246. [PMID: 30267982 DOI: 10.1016/j.bios.2018.09.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 09/06/2018] [Accepted: 09/06/2018] [Indexed: 01/17/2023]
Abstract
Biosensing and detecting the rare circulating tumor cells (CTCs) in complex blood samples are a great challenge but necessary for cancer metastasis prevention. Here we show a novel highly-sensitive biosensing system for detecting CTCs in whole blood. The system is composed of Her2-coated immunomagnetic beads and an anti-EpCAM aptamer assembled pseudo-DNA nanocatenane (PDN) for dual targeting and separating CTCs, in conjunction with the rolling circle amplification (RCA) and molecular beacon (MB) system for CTCs signal amplification. The Her-2-coated beads separated CTCs from blood after their elution from a magnetic column. The unique PDN, which is a tailor-designed self-assembly of three circular DNAs that are inter-locked with independent and non-interfered templates for periodic RCA process, binds EpCAM-rich CTCs. In the presence of the RCA primer, phi29 DNA polymerase and MB, the system collaboratively generated the amplified fluorescent signals for highly-sensitive detection of CTCs. Through this system, we achieved the limit of detection less than 10 CTCs/mL blood, and quantified the number of CTCs in patient blood, which is proportional to the patient cancer status. Our technique is highly-sensitive, practicable and convenient enough for clinical detection of breast CTCs.
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Affiliation(s)
- Jie Wang
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Hai-Yan Dong
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China; Fujian Key Laboratory for Translational Research in Cancer and Neurodegenerative Diseases Institute for Translational Medicine, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350108, China
| | - Yuyang Zhou
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Long-Yu Han
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Ting Zhang
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Min Lin
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Chiahung Wang
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Huo Xu
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zai-Sheng Wu
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Lee Jia
- Institute of Oceanography, Minjiang University, Fuzhou, Fujian 350108, China.
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Bayat P, Nosrati R, Alibolandi M, Rafatpanah H, Abnous K, Khedri M, Ramezani M. SELEX methods on the road to protein targeting with nucleic acid aptamers. Biochimie 2018; 154:132-155. [PMID: 30193856 DOI: 10.1016/j.biochi.2018.09.001] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 09/02/2018] [Indexed: 12/14/2022]
Abstract
Systematic evolution of ligand by exponential enrichment (SELEX) is an efficient method used to isolate high-affinity single stranded oligonucleotides from a large random sequence pool. These SELEX-derived oligonucleotides named aptamer, can be selected against a broad spectrum of target molecules including proteins, cells, microorganisms and chemical compounds. Like antibodies, aptamers have a great potential in interacting with and binding to their targets through structural recognition and are therefore called "chemical antibodies". However, aptamers offer advantages over antibodies including smaller size, better tissue penetration, higher thermal stability, lower immunogenicity, easier production, lower cost of synthesis and facilitated conjugation or modification with different functional moieties. Thus, aptamers represent an attractive substitution for protein antibodies in the fields of biomarker discovery, diagnosis, imaging and targeted therapy. Enormous interest in aptamer technology triggered the development of SELEX that has underwent numerous modifications since its introduction in 1990. This review will discuss the recent advances in SELEX methods and their advantages and limitations. Aptamer applications are also briefly outlined in this review.
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Affiliation(s)
- Payam Bayat
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Rahim Nosrati
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Houshang Rafatpanah
- Inflammation and Inflammatory Diseases Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mostafa Khedri
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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Li W, Wang L, Wang Y, Jiang W. Binding-induced nicking site reconstruction strategy for quantitative detection of membrane protein on living cell. Talanta 2018; 189:383-388. [PMID: 30086935 DOI: 10.1016/j.talanta.2018.06.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/06/2018] [Accepted: 06/09/2018] [Indexed: 01/01/2023]
Abstract
Here, a binding-induced nicking site reconstruction strategy has been fabricated for quantitative detection of membrane protein on living cell. Taking protein tyrosine kinase-7 (PTK7) as model analyst, first, an aptamer probe was designed with an aptamer sequence, a trigger sequence and a nicking site. In the absence of PTK7, the aptamer sequence could partially hybridize with the trigger sequence, forming a stem-loop structure. And the two complementary sequences of the nicking site were separated, which could not be recognized by nicking enzyme. In the presence of PTK7, the aptamer probe and PTK7 binding caused the reconstruction of the probe, leading to the hybridization of the two separated nicking site sequences. Then, the nicking site could be identified and nicked, yielding the release of the trigger sequence. Next, the trigger sequence could initiate the homogeneous cascade amplification, producing multiple G-quadruplex structures. By inserting the N-Methyl Mesoporphyrin IX (NMM), enhanced fluorescence signal could be acquired. Through the binding-induced nicking site reconstruction, the trigger sequence could be released on the surface of living cell and became more accessible. By combining the cascade rolling circle amplification (RCA) and hybridization chain reaction (HCR), high sensitivity was achieved with a detection limit of 0.3 fM. Moreover, Quantitative assay of PTK7 on living cancer cells and normal cells were performed, suggesting that the proposed method was sensitive enough to detect changes in PTK7 expression. Thus, this strategy provided a novel and reliable method for membrane protein expression assay on living cell.
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Affiliation(s)
- Wei Li
- Key Laboratory of Natural Products Chemical Biological, Ministry of Education, School of Pharmacy, Shandong University, 250012 Jinan, PR China
| | - Lei Wang
- Key Laboratory of Natural Products Chemical Biological, Ministry of Education, School of Pharmacy, Shandong University, 250012 Jinan, PR China
| | - Yan Wang
- The 88th Hospital of PLA, 270100 Tai'an, PR China.
| | - Wei Jiang
- Key Laboratory of Natural Products Chemical Biological, Ministry of Education, School of Pharmacy, Shandong University, 250012 Jinan, PR China; School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, PR China.
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A dual-signal amplification strategy for kanamycin based on ordered mesoporous carbon-chitosan/gold nanoparticles-streptavidin and ferrocene labelled DNA. Anal Chim Acta 2018; 1033:185-192. [PMID: 30172325 DOI: 10.1016/j.aca.2018.05.070] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/23/2018] [Accepted: 05/26/2018] [Indexed: 01/21/2023]
Abstract
An ultrasensitive electrochemical aptasensor for kanamycin (KAN) detection was constructed with a dual-signal amplification strategy. The aptasensor achieved greatly amplified sensitivity due to the excellent electrical conductivity of the ordered mesoporous carbon-chitosan (OMC-CS)/gold nanoparticles-streptavidin (AuNPs-SA) and DNA2 labelled with ferrocene (Fc-DNA2). The AuNPs-SA was used to immobilize the DNA strand (biotin labelled) with the biotin-streptavidin system. The DNA2 strand containing the KAN aptamer was labelled with ferrocene to increase the current signal on the electrode surface when bound to KAN. Some factors that affect the performance of the aptasensor were optimized, and the proposed aptasensor provided a wide linear range from 1 × 10-10 M to 4 × 10-6 M, with a detection limit as low as 35.69 pM for KAN under the optimized conditions. This aptasensor had satisfactory electrochemical performance with good stability, sensitivity and reproducibility. Additionally, it also displayed a good specificity for KAN without interference from competitive analogues. Furthermore, the constructed aptasensor was successfully used to detect KAN in a real milk sample. The proposed method for KAN detection has great potential for the detection of other antibiotics.
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Bagheri E, Abnous K, Alibolandi M, Ramezani M, Taghdisi SM. Triple-helix molecular switch-based aptasensors and DNA sensors. Biosens Bioelectron 2018; 111:1-9. [PMID: 29627731 DOI: 10.1016/j.bios.2018.03.070] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/28/2018] [Accepted: 03/29/2018] [Indexed: 12/31/2022]
Abstract
Utilization of traditional analytical techniques is limited because they are generally time-consuming and require high consumption of reagents, complicated sample preparation and expensive equipment. Therefore, it is of great interest to achieve sensitive, rapid and simple detection methods. It is believed that nucleic acids assays, especially aptamers, are very important in modern life sciences for target detection and biological analysis. Aptamers and DNA-based sensors have been widely used for the design of various sensors owing to their unique features. In recent years, triple-helix molecular switch (THMS)-based aptasensors and DNA sensors have been broadly utilized for the detection and analysis of different targets. The THMS relies on the formation of DNA triplex via Watson-Crick and Hoogsteen base pairings under optimal conditions. This review focuses on recent progresses in the development and applications of electrochemical, colorimetric, fluorescence and SERS aptasensors and DNA sensors, which are based on THMS. Also, the advantages and drawbacks of these methods are discussed.
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Affiliation(s)
- Elnaz Bagheri
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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Niu W, Teng IT, Chen X, Tan W, Veige AS. Aptamer-mediated selective delivery of a cytotoxic cationic NHC-Au(i) complex to cancer cells. Dalton Trans 2017; 47:120-126. [PMID: 29192701 PMCID: PMC5736135 DOI: 10.1039/c7dt02616a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel cationic NHC-Au(i) complex was synthesized and studied for its antitumor activity. For all the cell lines tested, cationic NHC-Au(i) complex 2 shows much higher cytotoxicity than its neutral analogue 1. To achieve selective cancer cell targeting, complex 2 was covalently conjugated to aptamer AS1411, a DNA aptamer with strong binding affinity for nucleolin. The successful conjugation was confirmed by HPLC, gel electrophoresis, fluorescence spectroscopy and UV-Vis absorption. Conjugate AS1411-2 was then examined for its specific targeting and binding ability towards cancer cells over human normal cells using flow cytometry analysis and confocal microscopy. The cytotoxicity of AS1411-2 was then estimated by MTS assay. It was found that AS1411-2 exhibits higher activity than complex 2 towards targeted cells. Importantly, AS1411-2 exhibits much lower cytotoxicity towards healthy normal cell lines. Concurrently, the control groups without the AS1411 aptamer or without the NHC-Au(i) complex do have significant impact on cancer cell viability.
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Affiliation(s)
- Weijia Niu
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, Florida 32611, USA.
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Takahashi M. Aptamers targeting cell surface proteins. Biochimie 2017; 145:63-72. [PMID: 29198584 DOI: 10.1016/j.biochi.2017.11.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/28/2017] [Indexed: 02/07/2023]
Abstract
High affinity binders targeting specific cell surface proteins are vital for development of basic and applied biosciences. However, despite sustained efforts to generate such binders by chemicals and antibodies, there are still many cell surface proteins that lack high affinity binders. Nucleic acid aptamers have potential as binding molecules for cell surface proteins, because they form distinct structures that have high affinity and specificity for a wide range of targets. Aptamers are isolated from large combinatorial libraries using a unique iterative selection-amplification process known as systematic evolution of ligands by exponential enrichment (SELEX). Among advantages of this method, purified and complex heterogeneous targets, such as bacteria, viruses, and whole-living cells, can be used for selection of aptamers. Moreover, SELEX allows generation of cell-surface-specific aptamers without prior knowledge of expression profiles in target cells. Therefore, the technology has been widely used as a valid and feasible method to generate aptamers binding to cell surface proteins with intact structure. Herein, this review summarizes and updates iconic SELEX technologies that target membrane proteins.
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Affiliation(s)
- Masaki Takahashi
- Division of RNA Medical Science, The Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo, Japan.
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DU YL, MO LT, YI YS, QIU LP, TAN WH. Aptamers from Cell-based Selection for Bioanalysis and Bioimaging. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1016/s1872-2040(17)61052-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jiang Y, Shi M, Liu Y, Wan S, Cui C, Zhang L, Tan W. Aptamer/AuNP Biosensor for Colorimetric Profiling of Exosomal Proteins. Angew Chem Int Ed Engl 2017; 56:11916-11920. [PMID: 28834063 PMCID: PMC5912341 DOI: 10.1002/anie.201703807] [Citation(s) in RCA: 346] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Indexed: 12/30/2022]
Abstract
Exosomes constitute an emerging biomarker for cancer diagnosis because they carry multiple proteins that reflect the origins of parent cells. Assessing exosome surface proteins provides a powerful means of identifying a combination of biomarkers for cancer diagnosis. We report a sensor platform that profiles exosome surface proteins in minutes by the naked eye. The sensor consists of a gold nanoparticle (AuNP) complexed with a panel of aptamers. The complexation of aptamers with AuNPs protects the nanoparticles from aggregating in a high-salt solution. In the presence of exosomes, the non-specific and weaker binding between aptamers and the AuNP is broken, and the specific and stronger binding between exosome surface protein and the aptamer displaces aptamers from the AuNP surface and results in AuNP aggregation. This aggregation results in a color change and generates patterns for the identification of multiple proteins on the exosome surface.
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Affiliation(s)
- Ying Jiang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Life Sciences, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Muling Shi
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Life Sciences, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Yuan Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Life Sciences, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Shuo Wan
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Cheng Cui
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Liqin Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Life Sciences, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Life Sciences, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
- Department of Chemistry, Department of Physiology and Functional Genomics, Center for Research at Bio/nano Interface, UF Health Cancer Center, UF Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
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Motaghi H, Mehrgardi MA, Bouvet P. Carbon Dots-AS1411 Aptamer Nanoconjugate for Ultrasensitive Spectrofluorometric Detection of Cancer Cells. Sci Rep 2017; 7:10513. [PMID: 28874822 PMCID: PMC5585388 DOI: 10.1038/s41598-017-11087-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/16/2017] [Indexed: 12/26/2022] Open
Abstract
In the present study, a sensitive and selective signal-on method for aptamer based spectrofluorometric detection of cancer cells is introduced. AS1411, a nucleolin aptamer, is wrapped around water-soluble carbon dots and used as a probe for the detection of several types of cancer cells. Nucleolin, is overexpressed on the surface of cancer cells. Mouse breast 4T1, human breast MCF7, and human cervical HeLa cancer cells were selected as target cells, while human foreskin fibroblast cells HFFF-PI6 served as control cells. For the sensitive and selective spectrofluorimetric detection of target cancer cells in the presence of control cells, the cells were incubated in carbon dots-aptamer solutions, the cell suspensions were subsequently centrifuged and the fluorescence intensities were measured as an analytical signal. The specific targeting of cancer cells by AS1411 aptamers causes the release of carbon dots and enhances the fluorescence intensity. A calibration curve with a dynamic range between 10–4500 4T1 cells and detectability of roughly 7 cells was obtained. In addition, no significant change in the signal was detected by modifying the amount of human foreskin fibroblast control cells. Our results demonstrate similar responses to human MCF7 breast and cervical HeLa cancer cells.
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Affiliation(s)
- Hasan Motaghi
- Department of chemistry, University of Isfahan, Isfahan, 81746-73441, Iran
| | | | - Philippe Bouvet
- Université de Lyon, Centre de Recherche en Cancérologie de Lyon, Cancer Cell Plasticity Department, UMR INSERM 1052 CNRS 5286, Centre Léon Bérard, Lyon, France.,Université de Lyon, Ecole Normale Supérieure de 3 Lyon, Lyon, France
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Flow injection amperometric sandwich-type electrochemical aptasensor for the determination of adenocarcinoma gastric cancer cell using aptamer-Au@Ag nanoparticles as labeled aptamer. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.115] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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The Optimization and Characterization of an RNA-Cleaving Fluorogenic DNAzyme Probe for MDA-MB-231 Cell Detection. SENSORS 2017; 17:s17030650. [PMID: 28335559 PMCID: PMC5375936 DOI: 10.3390/s17030650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 02/08/2023]
Abstract
Breast cancer is one of the most frequently diagnosed cancers in females worldwide and lacks specific biomarkers for early detection. In a previous study, we obtained a selective RNA-cleaving Fluorogenic DNAzyme (RFD) probe against MDA-MB-231 cells, typical breast cancer cells, through the systematic evolution of ligands by exponential process (SELEX). To improve the performance of this probe for actual application, we carried out a series of optimization experiments on the pH value of a reaction buffer, the type and concentration of cofactor ions, and sequence minimization. The length of the active domain of the probe reduced to 25 nt from 40 nt after optimization, which was synthesized more easily and economically. The detection limit of the optimized assay system was 2000 MDA-MB-231 cells in 30 min, which is more sensitive than the previous one (almost 5000 cells). The DNAzyme probe was also capable of distinguishing MDA-MB-231 cell specifically from 3 normal cells and 10 other tumor cells. This probe with high sensitivity, selectivity, and economic efficiency enhances the feasibility for further clinical application in breast cancer diagnosis. Herein, we developed an optimization system to produce a general strategy to establish an easy-to-use DNAzyme-based assay for other targets.
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Altay C, Senay RH, Eksin E, Congur G, Erdem A, Akgol S. Development of amino functionalized carbon coated magnetic nanoparticles and their application to electrochemical detection of hybridization of nucleic acids. Talanta 2017; 164:175-182. [DOI: 10.1016/j.talanta.2016.11.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
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Zhao Y, Xu D, Tan W. Aptamer-functionalized nano/micro-materials for clinical diagnosis: isolation, release and bioanalysis of circulating tumor cells. Integr Biol (Camb) 2017; 9:188-205. [PMID: 28144664 DOI: 10.1039/c6ib00239k] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Detection of rare circulating tumor cells (CTCs) in peripheral blood is a challenging, but necessary, task in order to diagnose early onset of metastatic cancer and to monitor treatment efficacy. Over the last decade, step-up produced aptamers have attracted great attention in clinical diagnosis. They have offered great promise for a broader range of cell-specific recognition and isolation. In particular, aptamer-functionalized magnetic particles for selective extraction of target CTCs have shown reduced damage to cells and relatively simple operation. Also, efforts to develop aptamer-functionalized microchannel/microstructures able to efficiently isolate target CTCs are continuing, and these efforts have brought more advanced geometrically designed substrates. Various aptamer-mediated cell release techniques are being developed to enable subsequent biological studies. This article reviews some of these advances in aptamer-functionalized nano/micro-materials for CTCs isolation and methods for releasing captured CTCs from aptamer-functionalized surfaces. Biological studies of CTCs after release are also discussed.
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Affiliation(s)
- Yaju Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
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Wang QY, Kang YJ. Bioprobes Based on Aptamer and Silica Fluorescent Nanoparticles for Bacteria Salmonella typhimurium Detection. NANOSCALE RESEARCH LETTERS 2016; 11:150. [PMID: 26983430 PMCID: PMC4794472 DOI: 10.1186/s11671-016-1359-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/07/2016] [Indexed: 05/29/2023]
Abstract
In this study, we have developed an efficient method based on single-stranded DNA (ssDNA) aptamers along with silica fluorescence nanoparticles for bacteria Salmonella typhimurium detection. Carboxyl-modified Tris(2,2'-bipyridyl)dichlororuthenium(II) hexahydrate (RuBPY)-doped silica nanoparticles (COOH-FSiNPs) were prepared using reverse microemulsion method, and the streptavidin was conjugated to the surface of the prepared COOH-FSiNPs. The bacteria S. typhimurium was incubated with a specific ssDNA biotin-labeled aptamer, and then the aptamer-bacteria conjugates were treated with the synthetic streptavidin-conjugated silica fluorescence nanoprobes (SA-FSiNPs). The results under fluorescence microscopy show that SA-FSiNPs can be applied effectively for the labeling of bacteria S. typhimurium with great photostable property. To further verify the specificity of SA-FSiNPs out of multiple bacterial conditions, variant concentrations of bacteria mixtures composed of bacteria S. typhimurium, Escherichia coli, and Bacillus subtilis were treated with SA-FSiNPs.In addition, the feasibility of SA-FSiNPs for bacteria S. typhimurium detection in chicken samples was assessed. All the results display that the established aptamer-based nanoprobes exhibit the superiority for bacteria S. typhimurium detection, which is referentially significant for wider application prospects in pathogen detection.
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Affiliation(s)
- Qiu-Yue Wang
- College of Laboratory Medicine, Hunan University of Medicine, Huaihua, Hunan, 418000, China
| | - Yan-Jun Kang
- Wuxi Medical School and Public Health Research Center, Jiangnan University, Wuxi, Jiangsu, 214122, China.
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Xiao K, Liu J, Chen H, Zhang S, Kong J. A label-free and high-efficient GO-based aptasensor for cancer cells based on cyclic enzymatic signal amplification. Biosens Bioelectron 2016; 91:76-81. [PMID: 27992802 DOI: 10.1016/j.bios.2016.11.057] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/17/2016] [Accepted: 11/24/2016] [Indexed: 12/25/2022]
Abstract
A label-free and high-efficient graphene oxide (GO)-based aptasensor was developed for the detection of low quantity cancer cells based on cell-triggered cyclic enzymatic signal amplification (CTCESA). In the absence of target cells, hairpin aptamer probes (HAPs) and dye-labeled linker DNAs stably coexisted in solution, and the fluorescence was quenched by the GO-based FÖrster resonance energy transfer (FRET) process. In the presence of target cells, the specific binding of HAPs with the target cells triggered a conformational alternation, which resulted in linker DNA complementary pairing and cleavage by nicking endonuclease-strand scission cycles. Consequently, more cleaved fragments of linker DNAs with more the terminal labeled dyes could show the enhanced fluorescence because these cleaved DNA fragments hardly combine with GOs and prevent the FRET process. Fluorescence analysis demonstrated that this GO-based aptasensor exhibited selective and sensitive response to the presence of target CCRF-CEM cells in the concentration range from 50 to 105 cells. The detection limit of this method was 25 cells, which was approximately 20 times lower than the detection limit of normal fluorescence aptasensors without amplification. With high sensitivity and specificity, it provided a simple and cost-effective approach for early cancer diagnosis.
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Affiliation(s)
- Kunyi Xiao
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Juan Liu
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Hui Chen
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Song Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, PR China.
| | - Jilie Kong
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
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