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Song C, Ji S, Sun H, Lei Y, Zhao J. An Unconventional Immunosensor for Biomolecule Detection via Nonspecific Gold Nanoparticle-Antibody Interactions. Anal Chem 2024; 96:7367-7372. [PMID: 38696818 DOI: 10.1021/acs.analchem.4c00598] [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: 05/04/2024]
Abstract
Immunogold, that is, gold nanoparticles (AuNPs) conjugated with biomolecules such as antibodies and peptides, have been widely used to construct sandwiched immunosensors for biodetection. Two main challenges in these immunoassays are difficulties in finding and validating a suitable antibody, and the nonspecific interaction between the substrate and immunogold, which lowers the detection sensitivity and even causes false results. To avoid these issues, we took advantage of the nonspecific interaction between AuNPs and capture antibodies and proposed a new sensing mechanism. That is, after the capture of analyte targets by the capture antibodies on the substrate, AuNPs of certain chemical functionality would preferably bind to the free capture antibodies. Consequently, the amount of deposited AuNPs will inversely depend on the concentration of the analytes. As a proof-of-concept, we designed a mass-based sensor where anti-IgG antibodies were coated on a quartz crystal microbalance substrate. After IgG was introduced, tannic acid-capped AuNPs were applied to bind with the free anti-IgG antibody molecules. A frequency change (Δf) of the quartz substrate was induced by the increased mass loading. To further amplify the loading mass, an Ag enhancer solution was added, and Ag growth was catalyzed by the bound AuNPs. The Δf response showed a concentration-dependent decrease when increasing IgG concentration with a detection limit of 2.6 ng/mL. This method relies on the nonspecific interaction between AuNPs and anti-IgG antibodies to realize sensitive detection of IgG and eliminates the use of detection antibodies. The concept is an alternative to many existing immunoassay technologies.
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Affiliation(s)
- Chen Song
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - Siqi Ji
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Hongwei Sun
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Storrs, Connecticut 06269, United States
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
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Liu L, Ma X, Chang Y, Guo H, Wang W. Biosensors with Boronic Acid-Based Materials as the Recognition Elements and Signal Labels. BIOSENSORS 2023; 13:785. [PMID: 37622871 PMCID: PMC10452607 DOI: 10.3390/bios13080785] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/26/2023]
Abstract
It is of great importance to have sensitive and accurate detection of cis-diol-containing biologically related substances because of their important functions in the research fields of metabolomics, glycomics, and proteomics. Boronic acids can specifically and reversibly interact with 1,2- or 1,3-diols to form five or six cyclic esters. Based on this unique property, boronic acid-based materials have been used as synthetic receptors for the specific recognition and detection of cis-diol-containing species. This review critically summarizes the recent advances with boronic acid-based materials as recognition elements and signal labels for the detection of cis-diol-containing biological species, including ribonucleic acids, glycans, glycoproteins, bacteria, exosomes, and tumor cells. We also address the challenges and future perspectives for developing versatile boronic acid-based materials with various promising applications.
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Affiliation(s)
- Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Xiaohua Ma
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Shangqiu Normal University, Shangqiu 476000, China
| | - Yong Chang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Hang Guo
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Wenqing Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
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Bazzazan S, Moeinabadi-Bidgoli K, Lalami ZA, Bazzazan S, Mehrarya M, Yeganeh FE, Hejabi F, Akbarzadeh I, Noorbazargan H, Jahanbakhshi M, Hossein-khannazer N, Mostafavi E. Engineered UIO-66 metal-organic framework for delivery of curcumin against breast cancer cells: An in vitro evaluation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Qian G, Liao Q, Li G, Yin F. miR-378 associated with proliferation, migration and apoptosis properties in A549 cells and targeted NPNT in COPD. PeerJ 2022; 10:e14062. [PMID: 36128198 PMCID: PMC9482771 DOI: 10.7717/peerj.14062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 08/26/2022] [Indexed: 01/20/2023] Open
Abstract
Background microRNAs contribute to the development and progression of chronic obstructive pulmonary disease (COPD). However, the underlying molecular mechanisms are largely unclear. The goal of this study was to investigate the roles of miR-378 in alveolar epithelial type II cells and identify molecular mechanisms which contribute to the pathogenesis of COPD. Materials and methods Human alveolar epithelial (A549) cells were cultured in Dulbecco's Modified Eagle Medium. Cell proliferation was studied by using a cell counting kit-8 (CCK-8) and colony formation assays. Cell apoptosis and cell cycle were analyzed by flow cytometry and wound healing and Transwell were used to analyze the cell migration and. We performed bioinformatics analysis including target gene prediction, gene ontology (GO), Kyoto Encyclopedia of Genes and Genome (KEGG) pathway enrichment and construction of protein-protein interaction (PPI) network. The expression of miR-378 and NPNT from publically available expression microarray of COPD lung tissues was analyzed. Results Overexpression of miR-378 significantly increases cell proliferation, migration, and suppress apoptosis. GO analysis demonstrated that the miR-378 involved in transcription, vascular endothelial growth factor receptor signaling pathway, phosphatidylinositol 3-kinase signaling, cell migration, blood coagulation, cell shape, protein stabilization and phosphorylation. Pathway enrichment showed that the 1,629 target genes of miR-378 were associated with mTOR, ErbB, TGF-β, MAPK, and FoxO signaling pathways. Notably, miR-378 directly targets Nephronectin in A549 cells, and miR-378 was upregulated while NPNT was downregulated in COPD lung tissue samples. Conclusions These findings suggest that miR-378 can regulate the proliferation, migration, and apoptosis of A549 cells and target NPNT. miR-378 increased in COPD lung tissues while NPNT decreased, and might prove a potential target for novel drug therapy.
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Affiliation(s)
- Guoqing Qian
- Department of Infectious Diseases, Ningbo Hospital of Zhejiang University, Zhejiang University, Ningbo, Zhejiang, China,Department of Infectious Diseases, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China,Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, Nottinghamshire, United Kingdom
| | - Qi Liao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - Guoxiang Li
- Department of Infectious Diseases, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Fengying Yin
- Department of Infectious Diseases, Ningbo First Hospital, Ningbo University, Ningbo, Zhejiang, China
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Liu Z, Wang Q, Zhai G, Ke S, Yu X, Guo J. SLC4A4 promotes prostate cancer progression in vivo and in vitro via AKT-mediated signalling pathway. Cancer Cell Int 2022; 22:127. [PMID: 35305629 PMCID: PMC8933877 DOI: 10.1186/s12935-022-02546-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 03/10/2022] [Indexed: 01/23/2023] Open
Abstract
Abstract
Background
Prostate cancer (PCa) is the second leading cause of cancer-related male deaths worldwide. The purpose of this study was to investigate the effects of homo sapiens solute carrier family 4 member 4 (SLC4A4), which encodes the electrogenic Na+/HCO3− cotransporter isoform 1 (NBCe1), in the development and progression of PCa.
Methods
The expression levels of SLC4A4 in PCa and normal prostate tissues were evaluated by immunohistochemistry. The SLC4A4 knockdown cell model was structured by lentiviral infection, and the knockdown efficiency was validated by RT-qPCR and Western blotting. The effects of SLC4A4 knockdown on cell proliferation, apoptosis and cycle, migration, and invasion were detected by Celigo cell counting assay and CCK-8 assay, flow cytometry analysis, wound-healing, and Transwell assay, respectively. Tumor growth in nude mice was surveyed by in vivo imaging and Ki-67 staining. Furthermore, underlying mechanism of SLC4A4 silence induced inhibition of PCa progression was explored by human phospho-kinase array.
Results
Our results revealed that SLC4A4 expression was up-regulated in PCa tissues and human PCa cell lines. High expression of SLC4A4 in tumor specimens was significantly correlated with disease progression. SLC4A4 knockdown inhibited cell proliferation, migration and invasion, while facilitated apoptosis, which was also confirmed in vivo. Moreover, SLC4A4 promoted PCa progression through the AKT-mediated signalling pathway.
Conclusion
The results of this study indicated that SLC4A4 overexpression was closely associated with the progression of PCa; SLC4A4 knockdown suppressed PCa development in vitro and in vivo. SLC4A4 acts as a tumor promotor in PCa by regulating key components of the AKT pathway and may therefore act as a potential therapeutic target for PCa treatment.
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Cao H, Wang L, Geng C, Yang M, Mao W, Yang L, Ma Y, He M, Zhou Y, Liu L, Hu X, Yu J, Shen X, Gu X, Yin L, Shen Z. In leukemia, knock-down of the death inducer-obliterator gene would inhibit the proliferation of endothelial cells by inhibiting the expression of CDK6 and CCND1. PeerJ 2022; 10:e12832. [PMID: 35178295 PMCID: PMC8815367 DOI: 10.7717/peerj.12832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 01/04/2022] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Endothelial cells (ECs) are a critical component of the hematopoietic niche, and the cross-talk between ECs and leukemia was reported recently. This study aimed to determine the genes involved in the proliferation inhibition of endothelial cells in leukemia. METHODS Human umbilical vein endothelial cells (HUVEC) were cultured alone or co-cultured with K562 cell lines. GeneChip assays were performed to identify the differentially expressed genes. The Celigo, MTT assay, and flow cytometric analysis were used to determine the effect of RNAi DIDO on cell growth and apoptosis. The differently expressed genes were verified by qRT-PCR (quantitative real-time PCR) and western-blot. RESULTS In K562-HUVEC co-cultured cell lines, 323 down-regulated probes were identified and the extracellular signal-regulated kinase 5 (ERK5) signaling pathway was significantly inhibited. Among the down-regulated genes, the death inducer-obliterator gene (DIDO) is a part of the centrosome protein and may be involved in cell mitosis. As shown in the public data, leukemia patients with lower expression of DIDO showed a better overall survival (OS). The HUVEC cells were infected with shDIDO lentivirus, and reduced expression, inhibited proliferation, and increased apoptosis was observed in shDIDO cells. In addition, the expression of Cyclin-Dependent Kinase 6 (CDK6) and Cyclin D1 (CCND1) genes was inhibited in shDIDO cells. Finally, the public ChIP-seq data were used to analyze the regulators that bind with DIDO, and the H3K4me3 and PolII (RNA polymerase II) signals were found near the Exon1 and exon2 sites of DIDO. CONCLUSION The knock-down of DIDO will inhibit the proliferation of endothelial cells in the leukemia environment. The expression of DIDO may be regulated by H3K4me3 and the inhibition of DIDO may lead to the down-regulation of CDK6 and CCND1. However, how DIDO interacts with CDK6 and CCND1 requires further study.
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Affiliation(s)
- Honghua Cao
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lilan Wang
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chengkui Geng
- Department of Orthopedics, Yan’an Hospital of Kunming City, The Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Man Yang
- Department of Endocrinology, The Affiliated Hospital of Yunnan University & The Second People’s Hospital of Yunnan Province, Kunming Yunnan, Kunming, Yunnan, China
| | - Wenwen Mao
- Department of Geriatics, The Second Hospital of Kunming, Kunming, China
| | - Linlin Yang
- Department of Gynecology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yin Ma
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ming He
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yeying Zhou
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lianqing Liu
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xuejiao Hu
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jingxing Yu
- Department of Hematology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiufen Shen
- Department of Laboratory, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xuezhong Gu
- Department of Hematology, The First People Hospital in Yunnan Province, Kunming, China
| | - Liefen Yin
- Department of Hematology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zhenglei Shen
- Department of Hematology, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
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Shi Y, Wang X, Zhu Q, Chen G. The Ribosomal Protein L28 Gene Induces Sorafenib Resistance in Hepatocellular Carcinoma. Front Oncol 2021; 11:685694. [PMID: 34307151 PMCID: PMC8299949 DOI: 10.3389/fonc.2021.685694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/15/2021] [Indexed: 11/17/2022] Open
Abstract
Background Sorafenib is the first molecular-targeted drug for the treatment of advanced hepatocellular carcinoma (HCC). However, its treatment efficiency decreases after a short period of time because of the development of drug resistance. This study investigates the role of key genes in regulating sorafenib-resistance and elucidates the mechanism of drug resistance in hepatocellular carcinoma. Methods The HCC HepG2 cells were used to generate a sorafenib-resistant cell model by culturing the cells in gradually increasing concentration of sorafenib. RNA microarray was applied to profile gene expression and screen key genes associated with sorafenib resistance. Specific targets were knockdown in sorafenib-resistant HepG2 cells for functional studies. The HCC model was established in ACI rats using Morris hepatoma3924A cells to validate selected genes associated with sorafenib resistance in vivo. Results The HepG2 sorafenib-resistant cell model was successfully established. The IC50 of sorafenib was 9.988μM in HepG2 sorafenib-resistant cells. A total of 35 up-regulated genes were detected by expression profile chip. High-content screening technology was used and a potential drug-resistance related gene RPL28 was filtered out. After knocking down RPL28 in HepG2 sorafenib-resistant cells, the results of cell proliferation and apoptosis illustrated that RPL28 is the key gene involving in drug resistance. Furthermore, it was found that both RNA and protein expression of RPL28 increased in HepG2 sorafenib-resistant specimens of Morris Hepatoma rats. In addition, the expression of proliferative protein Ki-67 increased in sorafenib-resistant cells. Conclusion Our study suggested that RPL28 is a key gene inducing sorafenib resistance in HCC and could be a potential target for the treatment of drug-resistant HCC.
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Affiliation(s)
- Yi Shi
- Departments of Molecular Pathology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China.,The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Xiaojiang Wang
- Departments of Molecular Pathology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China.,The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Qiong Zhu
- Departments of Molecular Pathology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China
| | - Gang Chen
- Departments of Molecular Pathology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China.,Departments of Pathology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China
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Noorbazargan H, Amintehrani S, Dolatabadi A, Mashayekhi A, Khayam N, Moulavi P, Naghizadeh M, Mirzaie A, Mirzaei rad F, Kavousi M. Anti-cancer & anti-metastasis properties of bioorganic-capped silver nanoparticles fabricated from Juniperus chinensis extract against lung cancer cells. AMB Express 2021; 11:61. [PMID: 33900505 PMCID: PMC8076435 DOI: 10.1186/s13568-021-01216-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 04/07/2021] [Indexed: 12/24/2022] Open
Abstract
The current study evaluated the anti-cancer properties of bio-functionalized silver nanoparticles fabricated by Juniperus chinensis leaf extracts. The nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, UV–visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, dynamic light scattering, Zeta potential and X-ray spectroscopy. Further, this study elucidated the cellular and molecular mechanisms of nanoparticles for anti-proliferative and apoptotic effects on human lung cancer cells (A549) and compared them with commercial drug cisplatin. The size of the spherical nanoparticle was 12.96 nm with negative zeta potential. Up-regulation of caspase 3,9 and p53, Annexin V-FITC/PI, DAPI staining, and ROS production indicated the remarkable apoptotic effect of AgNPs compared to cisplatin. Moreover, down-regulation of MMP2/MMP9 scratch and matrigel assays revealed anti-metastatic properties of AgNPs. Cell cycle analysis and downregulation of cyclin D1 indicated cancer cell cessation in the G0/G1 phase. Overall, the results revealed that the green-synthetized AgNPs had anti-metastasis and anti-proliferation effects on lung cancer cells in comparison to cisplatin with lower side effects on the normal cell line.
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Zhang C, Jin X, Wang L, Jin C, Han X, Ma W, Li X, Teng G. Hollow MnFe 2O 4@C@APBA Nanospheres with Size Exclusion and pH Response for Efficient Enrichment of Endogenous Glycopeptides. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9714-9728. [PMID: 33600144 DOI: 10.1021/acsami.0c22221] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Enrichment and detection of glycopeptides are an important clinical measure for the diagnosis of complex diseases. Enrichment materials play a key role in this process; they must have an effective sample-screening ability to eliminate the interference of nonglycopeptides. In this work, novel hollow MnFe2O4@C@APBA nanospheres (HMCAs) with magnetic and pH responsiveness were prepared for glycopeptide enrichment. The as-prepared composites have a suitable hollow structure and large specific surface area, and the boron hydroxyl group in their cavities can fix or disconnect the hydrophilic groups of the glycopeptides at different pH, so the glycopeptides can be adsorbed or desorbed in a controllable way. Enrichment results showed that the HMCAs exhibited an excellent enrichment performance: ultralow limit of detection (approximately 0.5 fmol μL-1), perfect size-exclusion effect (HRP/BSA, 1:800, w/w), favorable universality (HRP, IgG, and RNase B), and high binding capacity (150 mg/g). In order to verify the application of materials in practice, the HMCAs were used for the analysis of complex samples and it was found that 474 glycopeptides were identified from 210 glycoproteins in three replicate analyses of 2 μL of human serum. The results showed that the HMCAs could be used as a promising enrichment material for glycopeptide characterization in MS-based glycoproteomics and related fields.
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Affiliation(s)
- Chun Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Xiaodong Jin
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Liping Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Chengzhao Jin
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Xiaoqian Han
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Weigang Ma
- School of Aerospace Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Xingang Li
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Guixiang Teng
- College of Life Science, Northwest Normal University, Lanzhou 730070, P. R. China
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Wang Y, Xie G, Li M, Du J, Wang M. COPB2 gene silencing inhibits colorectal cancer cell proliferation and induces apoptosis via the JNK/c-Jun signaling pathway. PLoS One 2020; 15:e0240106. [PMID: 33211699 PMCID: PMC7676692 DOI: 10.1371/journal.pone.0240106] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 09/18/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives Colorectal cancer (CRC) is one of the most common malignant human tumors. It is associated with high morbidity and mortality rates. In recent years, tumor gene therapy has emerged as a promising new approach for colorectal cancer therapy. Herein, we identify and analyze the role of COPB2 (coatomer protein complex, subunit beta 2) in proliferation and apoptosis of CRC cells. Methods To investigate the role of COPB2 in the proliferation and apoptosis of CRC cells, a shCOPB2 vector and a shCtrl vector were constructed for transfection into RKO and HCT116 cells. Cells proliferation was subsequently measured via cell counting kit-8 (CCK8) assay and Celigo cell counting assay. Apoptosis was measured via flow cytometry. The activity level of Caspase 3/7 was measured. Finally, the level of several JNK/c-Jun apoptosis pathway-related proteins were measured to characterize the mechanism of apoptosis. Results Our results showed that the proliferation rate was decreased and the apoptosis rate was increased in shCOPB2-treated RKO and HCT116 cells compared to those in controls. After the silencing of COPB2, JNK/c-Jun signal pathway activation was increased, the expression levels of apoptosis pathway-related proteins, such as Bad, p53 and Caspase 3, were also increased. Conclusion COPB2 gene silencing can inhibit RKO and HCT116 cells proliferation and induce apoptosis via the JNK/c-Jun signaling pathway.
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Affiliation(s)
- Yan Wang
- Gansu Provincial Hospital, Lanzhou, Gansu, China
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China
- * E-mail:
| | - Guangmei Xie
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, Gansu, China
| | - Min Li
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Juan Du
- Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Min Wang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China
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HEATR1 Deficiency Promotes Chemoresistance via Upregulating ZNF185 and Downregulating SMAD4 in Pancreatic Cancer. JOURNAL OF ONCOLOGY 2020; 2020:3181596. [PMID: 32565799 PMCID: PMC7271247 DOI: 10.1155/2020/3181596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/28/2020] [Accepted: 03/14/2020] [Indexed: 01/05/2023]
Abstract
Objective To discover the correlated gene with HEATR1 in regulating chemoresistance of gemcitabine. Methods Gene chip analysis was performed to find out differential genes between HEATR1-KD and control groups. The top 20 genes were subjected to high-content screening, and functional assay was implemented. Gene expression profiling was carried out to find the downstream target. Immunohistochemistry and survival analysis were performed. Results ZNF185 fold change (4.5285) was the most significant between the HEATR1-KD and control groups. Knocking down ZNF185 could promote the chemosensitivity, apoptosis, and proliferative inhibition, with SMAD4 significantly upregulated. Patients with high HEATR1 and SMAD4 or low ZNF185 exhibited better survival. Conclusion HEATR1, ZNF185, and SMAD4 could affect the chemosensitivity of gemcitabine and may be the indicators of gemcitabine selection in the chemotherapy of pancreatic cancer.
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Bai T, Zhao Y, Liu Y, Cai B, Dong N, Li B. Effect of KNL1 on the proliferation and apoptosis of colorectal cancer cells. Technol Cancer Res Treat 2020; 18:1533033819858668. [PMID: 31315522 PMCID: PMC6637841 DOI: 10.1177/1533033819858668] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Objective: To identify the expression of kinetochore scaffold 1 (KNL1) in colorectal tumor tissues and to clarify the role of this gene in the proliferation capability of colorectal cancer cells. Methods: A total of 108 paired colorectal tumor and normal tissue samples were collected from patients with colorectal cancer and subjected to quantitative polymerase chain reaction and immunohistochemistry analyses. Expression levels of KNL1 mRNA and protein were compared between tumor and normal tissues, and KNL1 levels were evaluated in relation to the patients’ tumor differentiation, sex, lymph node metastasis, TNM stage, infiltration depth, age, and tumor location. Survival curves were also constructed and compared between patients with tumor samples with and without KLN1 protein expression. KNL1 was under-expressed in colorectal cancer cells in vitro using lentiviral transfection with short hairpin RNA, and its function was evaluated by proliferation, colony-formation, and apoptosis assays. Expression levels of BUB1 protein were also compared between tumor and normal tissues, and the correlation between KNL1 expression and BUB1 expression in colorectal cancer tissues was examined. Results: KNL1 mRNA and protein were both highly expressed in colorectal tumor tissues compared with paired normal tissues. KNL1 downregulation significantly inhibited colorectal cancer cell proliferation and colony formation, and promoted apoptosis. KNL1 protein expression was significantly associated with tumor differentiation, but not with sex, lymph node metastasis, TNM stage, infiltration depth, age, or tumor location. KNL1 protein expression was also significantly associated with poorer survival. Moreover, there was a significant correlation between KNL1 and BUB1 in colorectal cancer tissues. Conclusions: KNL1 plays an effective role in decreasing apoptosis and promoting the proliferation of colorectal cancer cells, suggesting that its inhibition may represent a promising therapeutic approach in patients with colorectal cancer.
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Affiliation(s)
- Tianliang Bai
- 1 Department of General Surgery, Hebei Medical University Fourth Affiliated Hospital (Hebei Provincial Tumor Hospital), Shijiazhuang, Hebei, P.R. China.,2 Department of Gastrointestinal Surgery, Affiliated Hospital of Hebei University, Baoding, Hebei, P.R. China
| | - Yalei Zhao
- 1 Department of General Surgery, Hebei Medical University Fourth Affiliated Hospital (Hebei Provincial Tumor Hospital), Shijiazhuang, Hebei, P.R. China
| | - Yabin Liu
- 1 Department of General Surgery, Hebei Medical University Fourth Affiliated Hospital (Hebei Provincial Tumor Hospital), Shijiazhuang, Hebei, P.R. China
| | - Bindan Cai
- 3 Department of Neurology, Zhuozhou City Hospital, Zhuozhou, Hebei, P.R. China
| | - Ning Dong
- 4 Department of Radiology, Zhuozhou City Hospital, Zhuozhou, Hebei, P.R. China
| | - Binghui Li
- 1 Department of General Surgery, Hebei Medical University Fourth Affiliated Hospital (Hebei Provincial Tumor Hospital), Shijiazhuang, Hebei, P.R. China
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Kang YT, Purcell E, Palacios-Rolston C, Lo TW, Ramnath N, Jolly S, Nagrath S. Isolation and Profiling of Circulating Tumor-Associated Exosomes Using Extracellular Vesicular Lipid-Protein Binding Affinity Based Microfluidic Device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903600. [PMID: 31588683 PMCID: PMC6951813 DOI: 10.1002/smll.201903600] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/19/2019] [Indexed: 05/19/2023]
Abstract
Extracellular vesicles (EVs) are emerging as a potential diagnostic test for cancer. Owing to the recent advances in microfluidics, on-chip EV isolation is showing promise with respect to improved recovery rates, smaller necessary sample volumes, and shorter processing times than ultracentrifugation. Immunoaffinity-based microfluidic EV isolation using anti-CD63 is widely used; however, anti-CD63 is not specific to cancer-EVs, and some cancers secrete EVs with low expression of CD63. Alternatively, phosphatidylserine (PS), usually expressed in the inner leaflet of the lipid bilayer of the cells, is shown to be expressed on the outer surface of cancer-associated EVs. A new exosome isolation microfluidic device (new ExoChip), conjugated with a PS-specific protein, to isolate cancer-associated exosomes from plasma, is presented. The device achieves 90% capture efficiency for cancer cell exosomes compared to 38% for healthy exosomes and isolates 35% more A549-derived exosomes than an anti-CD63-conjugated device. Immobilized exosomes are then easily released using Ca2+ chelation. The recovered exosomes from clinical samples are characterized by electron microscopy and western-blot analysis, revealing exosomal shapes and exosomal protein expressions. The new ExoChip facilitates the isolation of a specific subset of exosomes, allowing the exploration of the undiscovered roles of exosomes in cancer progression and metastasis.
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Affiliation(s)
- Yoon-Tae Kang
- Department of Chemical Engineering and Biointerface Institute, University of Michigan, 2800 Plymouth Road, NCRC B10-A184, Ann Arbor, MI, 48109, USA
| | - Emma Purcell
- Department of Chemical Engineering and Biointerface Institute, University of Michigan, 2800 Plymouth Road, NCRC B10-A184, Ann Arbor, MI, 48109, USA
| | - Colin Palacios-Rolston
- Department of Chemical Engineering and Biointerface Institute, University of Michigan, 2800 Plymouth Road, NCRC B10-A184, Ann Arbor, MI, 48109, USA
| | - Ting-Wen Lo
- Department of Chemical Engineering and Biointerface Institute, University of Michigan, 2800 Plymouth Road, NCRC B10-A184, Ann Arbor, MI, 48109, USA
| | - Nithya Ramnath
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Shruti Jolly
- Department of Radiation Oncology, Michigan Medicine, University of Michigan, 1500 E Medical Center Dr., Ann Arbor, MI, 48109, USA
| | - Sunitha Nagrath
- Department of Chemical Engineering and Biointerface Institute, University of Michigan, 2800 Plymouth Road, NCRC B10-A184, Ann Arbor, MI, 48109, USA
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Omstead DT, Sjoerdsma J, Bilgicer B. Polyvalent Nanoobjects for Precision Diagnostics. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:69-88. [PMID: 30811215 DOI: 10.1146/annurev-anchem-061318-114938] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
As our ability to synthesize and modify nanoobjects has improved, efforts to explore nanotechnology for diagnostic purposes have gained momentum. The variety of nanoobjects, especially those with polyvalent properties, displays a wide range of practical and unique properties well suited for applications in various diagnostics. This review briefly covers the broad scope of multivalent nanoobjects and their use in diagnostics, ranging from ex vivo assays and biosensors to in vivo imaging. The nanoobjects discussed here include silica nanoparticles, gold nanoparticles, quantum dots, carbon dots, fullerenes, polymers, dendrimers, liposomes, nanowires, and nanotubes. In this review, we describe recent reports of novel applications of these various nanoobjects, particularly as polyvalent entities designed for diagnostics.
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Affiliation(s)
- David T Omstead
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA;
| | - Jenna Sjoerdsma
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA;
| | - Basar Bilgicer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA;
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
- Advanced Diagnostics and Therapeutics Initiative, University of Notre Dame, Notre Dame, Indiana 46556, USA
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana 46617, USA
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15
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Jiang P, Wang Y, Zhao L, Ji C, Chen D, Nie L. Applications of Gold Nanoparticles in Non-Optical Biosensors. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E977. [PMID: 30486293 PMCID: PMC6315477 DOI: 10.3390/nano8120977] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/21/2018] [Accepted: 11/22/2018] [Indexed: 12/11/2022]
Abstract
Due to their unique properties, such as good biocompatibility, excellent conductivity, effective catalysis, high density, and high surface-to-volume ratio, gold nanoparticles (AuNPs) are widely used in the field of bioassay. Mainly, AuNPs used in optical biosensors have been described in some reviews. In this review, we highlight recent advances in AuNP-based non-optical bioassays, including piezoelectric biosensor, electrochemical biosensor, and inductively coupled plasma mass spectrometry (ICP-MS) bio-detection. Some representative examples are presented to illustrate the effect of AuNPs in non-optical bioassay and the mechanisms of AuNPs in improving detection performances are described. Finally, the review summarizes the future prospects of AuNPs in non-optical biosensors.
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Affiliation(s)
- Pengfei Jiang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yulin Wang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.
| | - Lan Zhao
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.
| | - Chenyang Ji
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.
| | - Dongchu Chen
- School of Material Science and Energy Engineering, Foshan University, Foshan 528000, China.
| | - Libo Nie
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China.
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16
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Pan D, Li G, Hu H, Xue H, Zhang M, Zhu M, Gong X, Zhang Y, Wan Y, Shen Y. Direct Immunoassay for Facile and Sensitive Detection of Small Molecule Aflatoxin B 1 based on Nanobody. Chemistry 2018; 24:9869-9876. [PMID: 29766584 DOI: 10.1002/chem.201801202] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/14/2018] [Indexed: 01/07/2023]
Abstract
Aflatoxin B1 (AFB1 ), one of the most toxic mycotoxins, is classified as a group I carcinogen and ubiquitous in various foods and agriproducts. Thus, accurate and sensitive determination of AFB1 is of great significance to meet the criteria of food safety. Direct detection of AFB1 is difficult by monoclonal antibody (mAb) with large molecular size (≈150 kD) since the target is too small to produce a detectable signal change. Herein, by combining the electrochemical properties of nanomaterials and the advantages of nanobodies, we developed a direct, highly selective and sensitive electrochemical immunosensor for small molecule detection. The proposed immunosensor had a wide calibration range of 0.01 to 100 ng mL-1 and a low detection limit of 3.3 pg mL-1 (S/N=3). Compared with the immunosensor prepared with mAb which was applied in the typical indirect immunoassay, the immunosensor in this work possessed two orders of magnitudes wider linear range and 10-fold more sensitivity. The as-obtained immunosensor was further successfully applied for sensing AFB1 in real samples. This proposed assay would provide a simple, highly sensitive and selective approach for the direct immunoassay of small molecule AFB1 , and is extendable to the development of direct immunosensing systems for other small molecules detection by coupling nanocarbon and nanobody.
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Affiliation(s)
- Deng Pan
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Guanghui Li
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Huizhen Hu
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Huaijia Xue
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Mingming Zhang
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Min Zhu
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Xue Gong
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Yuanjian Zhang
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
| | - Yakun Wan
- Shanghai Novamab Biopharmaceuticals Co., Ltd., 201203, Shanghai, China
| | - Yanfei Shen
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, 210009, Nanjing, China
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17
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Zheng J, You W, Zheng C, Wan P, Chen J, Jiang X, Zhu Z, Zhang Z, Gong A, Li W, Tan J, Ji T, Guo W, Zhang S. Knockdown of FBXO39 inhibits proliferation and promotes apoptosis of human osteosarcoma U-2OS cells. Oncol Lett 2018; 16:1849-1854. [PMID: 30008875 DOI: 10.3892/ol.2018.8876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 04/16/2018] [Indexed: 11/05/2022] Open
Abstract
F-box proteins are essential components of the Skp-cullin-F-box complex (a type of E3 ubiquitin ligase), and participate in cell cycle and immune responses through the ubiquitin proteasome system. F-box protein 39 (FBXO39) belongs to the F-box family, which has been reported to be associated with cancer oncogenesis and progression. The present study aimed to investigate the role of FBXO39 in osteosarcoma (OS) cell proliferation and apoptosis in vitro. It was demonstrated that U-2OS cells exhibited high expression of FBXO39 compared with HOS and SaOS-2 osteosarcoma cells. Thus, knockdown of FBXO39 was performed using lentivirus-mediated short hairpin RNA (shRNA) transfection to validate the effect of FBXO39 in U-2OS cells. Western blotting and RT-qPCR analysis were used to confirm the efficiency of infection by analyzing the expression level of FBXO39. Using Celigo-based cell counting and MTT assays, it was demonstrated that FBXO39 knockdown significantly reduced the rate of cell proliferation compared with control. Caspase 3/7 activity assays and fluorescence-activated cell sorting confirmed the induction of apoptosis in U-2OS cells following FBXO39 knockdown. In conclusion, it was demonstrated that FBXO39 knockdown may significantly inhibit proliferation and promote apoptosis of U-2OS cells. Thus, FBXO39 may serve an important role in OS progression.
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Affiliation(s)
- Jianrong Zheng
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China.,Department of Traumatic Orthopedics, Huizhou Municipal Central Hospital, Huizhou, Guangdong 516000, P.R. China
| | - Wei You
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Chuanxi Zheng
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Peng Wan
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Jinquan Chen
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Xiaochun Jiang
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Zhixiang Zhu
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Zhixiong Zhang
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Anqi Gong
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Wei Li
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Jifeng Tan
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Tao Ji
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100044, P.R. China
| | - Wei Guo
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100044, P.R. China
| | - Shiquan Zhang
- Department of Joint and Musculoskeletal Tumor, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, P.R. China
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18
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Sensitive determination of sialic acid expression on living cells by using an ITO electrode modified with graphene, gold nanoparticles and thionine for triple signal amplification. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2390-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Yang X, Zhou L, Hao Y, Zhou B, Yang P. Erythrocytes-based quartz crystal microbalance cytosensor for in situ detection of cell surface sialic acid. Analyst 2017; 142:2169-2176. [DOI: 10.1039/c7an00073a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Erythrocytes-based quartz crystal microbalance cytosensor forin situdetection of cell surface sialic acid using AuNPs/APBA signal amplification nanoprobe.
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Affiliation(s)
- Xiaojuan Yang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Lin Zhou
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Yan Hao
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Bin Zhou
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Peihui Yang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
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20
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Zheng D, Guo P, Xiong J, Wang S. Streptavidin Modified ZnO Film Bulk Acoustic Resonator for Detection of Tumor Marker Mucin 1. NANOSCALE RESEARCH LETTERS 2016; 11:396. [PMID: 27624339 PMCID: PMC5021656 DOI: 10.1186/s11671-016-1612-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/03/2016] [Indexed: 05/11/2023]
Abstract
A ZnO-based film bulk acoustic resonator has been fabricated using a magnetron sputtering technology, which was employed as a biosensor for detection of mucin 1. The resonant frequency of the thin-film bulk acoustic resonator was located near at 1503.3 MHz. The average electromechanical coupling factor [Formula: see text] and quality factor Q were 2.39 % and 224, respectively. Using the specific binding system of avidin-biotin, the streptavidin was self-assembled on the top gold electrode as the sensitive layer to indirectly test the MUC1 molecules. The resonant frequency of the biosensor decreases in response to the mass loading in range of 20-500 nM. The sensor modified with the streptavidin exhibits a high sensitivity of 4642.6 Hz/nM and a good selectivity.
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Affiliation(s)
- Dan Zheng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062 China
- Faculty of Electronic and Engineering, Vocational College of WuHan Software Engineering, WuHan, 430205 China
| | - Peng Guo
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062 China
| | - Juan Xiong
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062 China
| | - Shengfu Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062 China
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21
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Qian X, Ma X, Zhou H, Yu C, Zhang Y, Yang X, Shen X, Gao X. Expression and prognostic value of E-cadherin in laryngeal cancer. Acta Otolaryngol 2016; 136:722-8. [PMID: 27072356 DOI: 10.3109/00016489.2016.1144143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
CONCLUSION Down-regulation of ECD may associate with infiltrative tumor growth and result in poor prognosis. However, ECD expression is not significantly associated with tumor metastasis. AIM To investigate the prognostic role of E-cadherin (ECD) expression in laryngeal cancer. METHODS In a clinical study, a total of 79 laryngeal cancer patients who received surgery were included in this study. The expression of ECD in laryngeal cancer tissue was detected by immumohistochemical staining. In an in vitro study, ECD up-regulated cells (Ad-ECD) and ECD down-regulated cells (sh-ECD) were cultured, along with interference by siRNA. Cell apoptosis was detected by flow cytometry. In an in vivo study, nude mice were injected with Ad-ECD, sh-ECD, and Hep-2 cells. The ECD expression and tumor metastasis in the brain, liver, and lung tissues were detected. RESULTS Clinical data showed that expression of ECD was statistically correlated with survival rate (p < 0.05), but not with other clinical characteristics, such as age, gender, lymphatic metastasis, and TNM staging. ECD was down-regulated in sh-ECD cells and the down-regulation significantly reduced apoptosis of Hep-2 cells. Tumor growth was significantly inhibited in the Ad-ECD group. Except the tumor tissue, no positive ECD expression or significant tumor cells were found in the brain, liver, and lung tissues.
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Affiliation(s)
- Xiaoyun Qian
- a Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University , Nanjing , PR China
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Xiaofeng Ma
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Han Zhou
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Chenjie Yu
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Yifen Zhang
- c Department of Pathology , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Xia Yang
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Xiaohui Shen
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
| | - Xia Gao
- a Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University , Nanjing , PR China
- b Department of Otorhinolaryngology-Head and Neck Surgery , Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School , Nanjing , PR China
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22
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Yin J, Miao P. Apoptosis Evaluation by Electrochemical Techniques. Chem Asian J 2015; 11:632-41. [DOI: 10.1002/asia.201501045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Indexed: 01/22/2023]
Affiliation(s)
- Jian Yin
- CAS Key Lab of Bio-Medical Diagnostics; Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou 215163 P.R. China
| | - Peng Miao
- CAS Key Lab of Bio-Medical Diagnostics; Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou 215163 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
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23
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Novel electrodeposition media to synthesize CoNi-Pt Core@Shell stable mesoporous nanorods with very high active surface for methanol electro-oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.06.069] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Muddineti OS, Ghosh B, Biswas S. Current trends in using polymer coated gold nanoparticles for cancer therapy. Int J Pharm 2015; 484:252-67. [DOI: 10.1016/j.ijpharm.2015.02.038] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 02/11/2015] [Accepted: 02/14/2015] [Indexed: 02/06/2023]
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25
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Guo P, Xiong J, Zheng D, Zhang W, Liu L, Wang S, Gu H. A biosensor based on a film bulk acoustic resonator and biotin–avidin system for the detection of the epithelial tumor marker mucin 1. RSC Adv 2015. [DOI: 10.1039/c5ra06016h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A streptavidin-immobilized FBAR biosensor in virtue of specific binding between biotin and avidin was successfully fabricated for mucin 1 detection.
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Affiliation(s)
- Peng Guo
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
| | - Juan Xiong
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
| | - Dan Zheng
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
| | - Weihai Zhang
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
| | - Lei Liu
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
| | - Shengfu Wang
- Faculty of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
- China
| | - Haoshuang Gu
- Hubei
- Collaborative Innovation Center for Advanced Organic Chemical Materials
- Faculty of Physics & Electronic Science
- Hubei University
- Wuhan 430062
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26
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Serrà A, Gómez E, López-Barbera JF, Nogués J, Vallés E. Green electrochemical template synthesis of CoPt nanoparticles with tunable size, composition, and magnetism from microemulsions using an ionic liquid (bmimPF6). ACS NANO 2014; 8:4630-4639. [PMID: 24786899 DOI: 10.1021/nn500367q] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Electrodeposition from microemulsions using ionic liquids is revealed as a green method for synthesizing magnetic alloyed nanoparticles, avoiding the use of aggressive reducing agents. Microemulsions containing droplets of aqueous solution (electrolytic solution containing Pt(IV) and Co(II) ions) in an ionic liquid (bmimPF6) define nanoreactors in which the electrochemical reduction takes place. Highly crystalline hcp alloyed CoPt nanoparticles, in the 10-120 nm range with a rather narrow size distribution, have been deposited on a conductive substrate. The relative amount of aqueous solution to ionic liquid determines the size of the nanoreactors, which serve as nanotemplates for the growth of the nanoparticles and hence determine their size and distribution. Further, the stoichiometry (Pt(x)Co(1-x)) of the particles can be tuned by the composition of the electrolytic solution inside the droplets. The control of the size and composition of the particles allows tailoring the room-temperature magnetic behavior of the nanoparticles from superparaparamagnetic to hard magnetic (with a coercivity of HC = 4100 Oe) in the as-obtained state.
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Affiliation(s)
- Albert Serrà
- Departament de Química Física and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona , Martí i Franquès 1, 08028, Barcelona, Spain
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27
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Shan W, Pan Y, Fang H, Guo M, Nie Z, Huang Y, Yao S. An aptamer-based quartz crystal microbalance biosensor for sensitive and selective detection of leukemia cells using silver-enhanced gold nanoparticle label. Talanta 2014; 126:130-5. [PMID: 24881543 DOI: 10.1016/j.talanta.2014.03.056] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 03/18/2014] [Accepted: 03/24/2014] [Indexed: 01/01/2023]
Abstract
An aptamer-based quartz crystal microbalance (QCM) biosensor was developed for the selective and sensitive detection of leukemia cells. In this strategy, aminophenylboronic acid-modified gold nanoparticles (APBA-AuNPs) which could bind to cell membrane were used for the labeling of cells followed by silver enhancement, through which significant signal amplification was achieved. Both the QCM and fluorescence microscopy results manifested the selectivity of the sensor designed. A good linear relationship between the frequency response and cell concentration over the range of 2×10(3)-1×10(5)cells/mL was obtained, with a detection limit of 1160cells/mL. This approach provides a simple, rapid, and economical method for leukemia cell analysis which might have great potential for further use.
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Affiliation(s)
- Wenqian Shan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yuliang Pan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Heting Fang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Manli Guo
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China; School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China.
| | - Zhou Nie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yan Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shouzhuo Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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Hu R, Wen W, Wang Q, Xiong H, Zhang X, Gu H, Wang S. Novel electrochemical aptamer biosensor based on an enzyme-gold nanoparticle dual label for the ultrasensitive detection of epithelial tumour marker MUC1. Biosens Bioelectron 2013; 53:384-9. [PMID: 24189297 DOI: 10.1016/j.bios.2013.10.015] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/10/2013] [Accepted: 10/10/2013] [Indexed: 01/27/2023]
Abstract
A novel platform based on a hairpin oligonucleotide (HO) switch, gold nanoparticles (AuNPs), and enzyme signal amplification for the ultrasensitive detection of mucin 1 protein (MUC1) was developed in this assay. This HO aptamers and horseradish peroxidase (HRP) were immobilised on the AuNPs to yield HO-AuNP-HRP conjugates. AuNPs were used as labels and bridges between the HO and HRP. HRP was also used as label for catalysing the oxidation of o-phenylenediamine by H2O2. The reaction product was 2,3-diaminophenazine (DAP), which was reduced and could be detected at surface of modified electrode. The reduction signal of DAP was used as a probe for the sensitive detection. After the recognition between oligonucleotide and MUC1, biotin was exposed. Biotin, along with the conjugate, was captured by streptavidin onto the surface of modified electrode. Therefore, the detection of target MUC1 which was a membrane-associated glycoprotein of the mucin family could be sensitively transduced via detection of the electrochemical reduction signal of DAP. Compared to other aptasensors, this biosensor has a good linear correlation ranges from 8.8 nM to 353.3 nM and a lower detection limit of 2.2 nM for MUC1. The proposed method provided a new electrochemical approach for the detection of MUC1.
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Affiliation(s)
- Rong Hu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
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