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Wu J, Wang X, Huang Y, Zhang Y, Su S, Shou H, Wang H, Zhang J, Wang B. Targeted glycan degradation potentiates cellular immunotherapy for solid tumors. Proc Natl Acad Sci U S A 2023; 120:e2300366120. [PMID: 37695897 PMCID: PMC10515149 DOI: 10.1073/pnas.2300366120] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 08/08/2023] [Indexed: 09/13/2023] Open
Abstract
Immune cell-based cancer therapies, such as chimeric antigen receptor T (CAR-T)-cell immunotherapy, have demonstrated impressive potency against hematological tumors. However, the efficacy of CAR-T cells against solid tumors remains limited. Herein, we designed tumor-targeting molecule-sialidase conjugates that potently and selectively stripped different sialoglycans from a variety of cancer cells. Desialylation enhanced induced pluripotent stem cell-derived chimeric antigen receptor-macrophage (CAR-iMac) infiltration and activation. Furthermore, the combination of cancer cell desialylation and CAR-iMac adoptive cellular therapy exerted a dramatic therapeutic effect on solid tumors and significantly prolonged the survival of tumor-bearing mice; these effects were mainly dependent on blockade of the checkpoint composed of sialic acid-binding immunoglobulin-like lectin (Siglec)-5 and Siglec-10 on the macrophages, and knockout of the glycoimmune checkpoint receptors could construct a CAR-iMac cell with stronger anticancer activity. This strategy that reverts the immune escape state ("cold tumor") to a sensitive recognition state ("hot tumor") has great significance for enhancing the effect of cellular immunotherapy on solid tumors. Therefore, desialylation combined with CAR-iMac cellular immunotherapy is a promising approach to enhance treatment with cellular immunotherapy and expand the valid indications among solid tumors, which provides inspiration for the development of cellular immunotherapies with glycoimmune checkpoint inhibition for the treatment of human cancer.
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Affiliation(s)
- Jicheng Wu
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xudong Wang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou 311121, China
| | - Yuqiao Huang
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Yunjing Zhang
- Ultrasonic Department, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Siyu Su
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou 311121, China
- Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou 362000, China
| | - Hao Shou
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Haoran Wang
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Jin Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou 311121, China
| | - Ben Wang
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
- Cancer Cancer, Zhejiang University, Hangzhou 310029, China
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Li T, Liu Y. Self-Assembled Nanorods of Phenylboronic Acid Functionalized Pyrene for In Situ Two-Photon Imaging of Cell Surface Sialic Acids and Photodynamic Therapy. Anal Chem 2021; 93:7029-7036. [PMID: 33908754 DOI: 10.1021/acs.analchem.1c00118] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Sialic acid (SA) plays important roles in various biological and pathological processes. Methods for monitoring and detection of SA are of great significance in terms of fundamental research, cancer diagnostics, and therapeutics, which are still limited until now. Here, a phenylboronic acid (PBA)-functionalized pyrene derivative, 4-(4-(pyren-1-yl)butyramido)phenylboronic acid (Py-PBA), was synthesized and used as a building block for self-assembling into hydrophilic nanorods. The Py-PBA nanorods (Py-PBA NRs) featured highly specific and efficient imaging of SA on living cells with the advantages of excellent fluorescence stability, good biocompatibility, and unique two-photon fluorescence properties. Meanwhile, the assembled Py-PBA NRs could efficiently generate 1O2 under two-photon irradiation, making it an excellent candidate for photodynamic therapy. This nanoplatform realized in situ recognition and two-photon imaging of SA on the cell surface as well as effective cancer cell therapy, providing a potential method for simple and selective analysis of SA in living cells and a new prospect for image-guided therapy.
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Affiliation(s)
- Ting Li
- Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology of Ministry of Education, Tsinghua University, Beijing 100084, P. R. China
| | - Yang Liu
- Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology of Ministry of Education, Tsinghua University, Beijing 100084, P. R. China
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Abstract
Sialic acids are cytoprotectors, mainly localized on the surface of cell membranes with multiple and outstanding cell biological functions. The history of their structural analysis, occurrence, and functions is fascinating and described in this review. Reports from different researchers on apparently similar substances from a variety of biological materials led to the identification of a 9-carbon monosaccharide, which in 1957 was designated "sialic acid." The most frequently occurring member of the sialic acid family is N-acetylneuraminic acid, followed by N-glycolylneuraminic acid and O-acetylated derivatives, and up to now over about 80 neuraminic acid derivatives have been described. They appeared first in the animal kingdom, ranging from echinoderms up to higher animals, in many microorganisms, and are also expressed in insects, but are absent in higher plants. Sialic acids are masks and ligands and play as such dual roles in biology. Their involvement in immunology and tumor biology, as well as in hereditary diseases, cannot be underestimated. N-Glycolylneuraminic acid is very special, as this sugar cannot be expressed by humans, but is a xenoantigen with pathogenetic potential. Sialidases (neuraminidases), which liberate sialic acids from cellular compounds, had been known from very early on from studies with influenza viruses. Sialyltransferases, which are responsible for the sialylation of glycans and elongation of polysialic acids, are studied because of their significance in development and, for instance, in cancer. As more information about the functions in health and disease is acquired, the use of sialic acids in the treatment of diseases is also envisaged.
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Affiliation(s)
- Roland Schauer
- Biochemisches Institut, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
| | - Johannis P Kamerling
- Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands.
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Zhang Y, Wang B, Jin W, Wen Y, Nan L, Yang M, Liu R, Zhu Y, Wang C, Huang L, Song X, Wang Z. Sensitive and robust MALDI-TOF-MS glycomics analysis enabled by Girard's reagent T on-target derivatization (GTOD) of reducing glycans. Anal Chim Acta 2018; 1048:105-114. [PMID: 30598139 DOI: 10.1016/j.aca.2018.10.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/01/2018] [Accepted: 10/07/2018] [Indexed: 12/31/2022]
Abstract
Sensitive glycomics analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) is of great importance but significantly hampered by their low ionization efficiency and labile sialic acid moieties. Chemical derivatization offers a viable way to improve both the ionization efficiency and analytical sensitivity of the glycans in MS analysis by altering their hydrophobicity or charge property. Here we employed Girard's reagent T (GT) for on-target derivatization (GTOD) of reducing glycan under mild acid condition to form stable hydrazones at room temperature, allowing rapid and sensitive identification of neutral and sialylated glycans in positive-ion mode as only permanently positive charged molecular ions without multiple ion adducts by MALDI-TOF-MS. The MS signal intensities of lactose, sialylated N-glycans derived from bovine fetuin and neutral N-glycans derived from RNaseB and ovalbumin were boosted by 7.44, 9.13, 12.96 and 13.47 folds on average (n = 3), respectively. More importantly, after GTOD strategy, unwanted desialylation of sialylated glycans during MS was suppressed. The detection limit of the assay is desirable since the nanogram of N-glycans derived from 0.16 μg ovalbumin could be detected. The assay demonstrated good stability (RSD≤2.95%, within 10 days), reliable reproducibility (RSD = 2.96%, n = 7) and a desirable linear dynamic range from 78 nmol/mL to 10 μmol/mL. The strategy has been successfully applied to MS analysis of reducing glycans from human milks, neutral and sialylated O-, N-glycans from glycoproteins, and reducing glycans derived from glycosphingolipids, presenting neater [M]+ signals which allow detection of more low-abundance glycans and assignation of Neu5Ac vs. Neu5Gc or fucose vs. hexose in glycans due to the absence of the ambiguous interpretation from multiple peaks (ion adducts [M+Na]+ and [M+K]+). Moreover, the GTOD assay prevents desialylation during MALDI-TOF-MS profiling and enables distinct linkage-specific characterization of terminal sialic acids of N-glycans derived from human serum protein when combines with an esterification.
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Affiliation(s)
- Ying Zhang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Bo Wang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Wanjun Jin
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Yanan Wen
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Lijing Nan
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Mingming Yang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Rendan Liu
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Yuyang Zhu
- Department of Biochemistry, Emory University School of Medicine, 1510 Clifton Road, Atlanta, GA, 30322, USA
| | - Chengjian Wang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Linjuan Huang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China
| | - Xuezheng Song
- Department of Biochemistry, Emory University School of Medicine, 1510 Clifton Road, Atlanta, GA, 30322, USA.
| | - Zhongfu Wang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science, Northwest University, 229 Northern Taibai Road, Xi'an, 710069, PR China.
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Hunter CD, Guo T, Daskhan G, Richards MR, Cairo CW. Synthetic Strategies for Modified Glycosphingolipids and Their Design as Probes. Chem Rev 2018; 118:8188-8241. [DOI: 10.1021/acs.chemrev.8b00070] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Carmanah D. Hunter
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Tianlin Guo
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Gour Daskhan
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Michele R. Richards
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Christopher W. Cairo
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Cheng Q, Cui Y, Xiao N, Lu J, Fang CJ. Synthesis of a Novel Fluorescent Ruthenium Complex with an Appended Ac₄GlcNAc Moiety by Click Reaction. Molecules 2018; 23:molecules23071649. [PMID: 29986387 PMCID: PMC6100033 DOI: 10.3390/molecules23071649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 07/01/2018] [Accepted: 07/02/2018] [Indexed: 11/16/2022] Open
Abstract
The O-linked β-N-acetylglucosamine (O-GlcNAc) modification is an abundant post-translational modification in eukaryotic cells, which plays a fundamental role in the activity of many cells and is associated with pathologies like type II diabetes, Alzheimer’s disease or some cancers. However, the precise connexion between O-GlcNAc-modified proteins and their function in cells is largely undefined for most cases. Confocal microscopy is a powerful and effective tool for in-cell elucidation of the function of biological molecules. Chemical labeling of non-ultraviolet or non-fluorescent carbohydrates with fluorescent tag is an essential step that makes intra-cellular microscopic inspection possible. Here we report a strategy based on the 1,3-dipolar cycloaddition, called click chemistry, between unnatural N-acetylglucosamine (GlcNAc) analogues Ac4GlcNAc (substituted with an azido group) and the corresponding fluorescent tag Ru(bpy)2(Phen-alkyne)Cl2 (4) to synthesize the fluorescent dye Ru(bpy)2(Phen-Ac4GlcNAc)Cl2 (5) under mild and neutral reaction conditions. Moreover, 5 showed good stability, desirable fluorescence characteristics, and exhibited rather low levels of cytotoxicity against sensitive MCF-7 cells. Additionally, we have achieved successful fluorescent imaging of 5 transported in living MCF-7 cells. Cell images displayed that proteins are potentially labelled with 5 in the cytoplasm.
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Affiliation(s)
- Qi Cheng
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
| | - Yalu Cui
- Key Laboratory of Systems Biomedicine (Ministry of Education) and Collaborative Innovation Center of Systems Biomedicine, Shanghai Center for Systems Biomedicine (SCSB), Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Nao Xiao
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
| | - Jishun Lu
- Key Laboratory of Systems Biomedicine (Ministry of Education) and Collaborative Innovation Center of Systems Biomedicine, Shanghai Center for Systems Biomedicine (SCSB), Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Chen-Jie Fang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
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Erythrocyte sialoglycoproteins engage Siglec-9 on neutrophils to suppress activation. Blood 2017; 129:3100-3110. [PMID: 28416510 DOI: 10.1182/blood-2016-11-751636] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 04/04/2017] [Indexed: 12/13/2022] Open
Abstract
Healthy blood neutrophils are functionally quiescent in the bloodstream, have a short lifespan, and exit the circulation to carry out innate immune functions, or undergo rapid apoptosis and macrophage-mediated clearance to mitigate host tissue damage. Limitation of unnecessary intravascular neutrophil activation is also important to prevent serious inflammatory pathologies. Because neutrophils become easily activated after purification, we carried out ex vivo comparisons with neutrophils maintained in whole blood. We found a difference in activation state, with purified neutrophils showing signs of increased reactivity: shedding of l-selectin, CD11b upregulation, increased oxidative burst, and faster progression to apoptosis. We discovered that erythrocytes suppressed neutrophil activation ex vivo and in vitro, including reduced l-selectin shedding, oxidative burst, chemotaxis, neutrophil extracellular trap formation, bacterial killing, and induction of apoptosis. Selective and specific modification of sialic acid side chains on erythrocyte surfaces with mild sodium metaperiodate oxidation followed by aldehyde quenching with 4-methyl-3-thiosemicarbazide reduced neutrophil binding to erythrocytes and restored neutrophil activation. By enzyme-linked immunosorbent assay and immunofluorescence, we found that glycophorin A, the most abundant sialoglycoprotein on erythrocytes, engaged neutrophil Siglec-9, a sialic acid-recognizing receptor known to dampen innate immune cell activation. These studies demonstrate a previously unsuspected role for erythrocytes in suppressing neutrophils ex vivo and in vitro and help explain why neutrophils become easily activated after separation from whole blood. We propose that a sialic acid-based "self-associated molecular pattern" on erythrocytes also helps maintain neutrophil quiescence in the bloodstream. Our findings may be relevant to some prior experimental and clinical studies of neutrophils.
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Tian H, Liu Q, Qin S, Zong C, Zhang Y, Yao S, Yang N, Guan T, Guo S. Synthesis and cardiovascular protective effects of quercetin 7-O-sialic acid. J Cell Mol Med 2017; 21:107-120. [PMID: 27511707 PMCID: PMC5192943 DOI: 10.1111/jcmm.12943] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 07/04/2016] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress and inflammation play important roles in the pathogenesis of cardiovascular disease (CVD). Oxidative stress-induced desialylation is considered to be a primary step in atherogenic modification, and therefore, the attenuation of oxidative stress and/or inflammatory reactions may ameliorate CVD. In this study, quercetin 7-O-sialic acid (QA) was synthesized aiming to put together the cardiovascular protective effect of quercetin and the recently reported anti-oxidant and anti-atherosclerosis functions of N-acetylneuraminic acid. The biological efficacy of QA was evaluated in vitro in various cellular models. The results demonstrated that 50 μM QA could effectively protect human umbilical vein endothelial cells (HUVEC, EA.hy926) against hydrogen peroxide- or oxidized low-density lipoprotein-induced oxidative damage by reducing the production of reactive oxygen species. QA attenuated hydrogen peroxide-induced desialylation of HUVEC and lipoproteins. QA decreased lipopolysaccharide-induced secretion of tumour necrosis factor-α (TNF-α) and monocyte chemoattractant protein-1 (MCP-1), and it significantly reduced the expression of intercellular adhesion molecule-1, vascular cell adhesion molecule-1, TNF-α and MCP-1. Furthermore, QA effectively promoted cholesterol efflux from Raw 264.7 macrophages to apolipoprotein A-1 and high-density lipoprotein by up-regulating ATP-binding cassette transporter A1 and G1, respectively. Results indicated that the novel compound QA exhibited a better capacity than quercetin for anti-oxidation, anti-inflammation, cholesterol efflux promotion and biomolecule protection against desialylation and therefore could be a candidate compound for the prevention or treatment of CVD.
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Affiliation(s)
- Hua Tian
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Qingchao Liu
- Department of Pharmaceutical EngineeringNorthwest UniversityXi'anChina
| | - Shucun Qin
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Chuanlong Zong
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Ying Zhang
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Shutong Yao
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Nana Yang
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Tao Guan
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Shoudong Guo
- Key Laboratory of Atherosclerosis in Universities of Shandong ProvinceInstitute of AtherosclerosisTaishan Medical UniversityTaianChina
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Dong R, Li F, Qin S, Wang Y, Si Y, Xu X, Tian H, Zhai L, Zhang G, Li Y, Zhou Y, Zhang Y, Zhang N, Guo S. Dataset on inflammatory proteins expressions and sialic acid levels in apolipoprotein E-deficient mice with administration of N-acetylneuraminic acid and/or quercetin. Data Brief 2016; 8:613-7. [PMID: 27419199 PMCID: PMC4936502 DOI: 10.1016/j.dib.2016.06.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/01/2016] [Accepted: 06/14/2016] [Indexed: 10/31/2022] Open
Abstract
The data presented in this article describe an effect of N-acetylneuraminic acid and/or quercetin on the inflammatory proteins expressions (TNF-α, ICAM-1, VCAM-1 and MOMA-2) and the N-acetylneuraminic acid (NANA) levels of apolipoprotein E-deficient mice that are given a high-fat diet. Protein expression was performed by immunohistochemical imaging and NANA was quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS) or semi-quantified using Image-Pro Plus software after ligation with fluorescein-5-thiosemicarbazide (FTSC). Further interpretation and discussion could be found at our research article entitled "Exogenous supplement of N-acetylneuraminic acid ameliorates atherosclerosis in apolipoprotein E-deficient mice" (Guo et al., 2016) [1].
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Affiliation(s)
- Rongrong Dong
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Fahui Li
- Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, China
| | - Shucun Qin
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Yi Wang
- Department of Ophthalmology, Affilated Hospital of Taishan Medical University, Taian 271000, China
| | - Yanhong Si
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Xuelian Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Hua Tian
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Lei Zhai
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Guangjie Zhang
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Yongjun Li
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Yawei Zhou
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Ying Zhang
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Nan Zhang
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
| | - Shoudong Guo
- Key Laboratory of Atherosclerosis in Universities of Shandong Province, Institute of Atherosclerosis, Taishan Medical University, Taian 271000, China
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Otsuka H, Muramatsu Y, Matsukuma D. Gold Nanorods Functionalized with Self-assembled Glycopolymers for Ultrasensitive Detection of Proteins. CHEM LETT 2015. [DOI: 10.1246/cl.140943] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hidenori Otsuka
- Department of Applied Chemistry, Faculty of Science Division I, Tokyo University of Science
- Department of Chemical Science and Technology, Graduate School of Chemical Science and Technology, Tokyo University of Science
| | - Yuki Muramatsu
- Department of Chemical Science and Technology, Graduate School of Chemical Science and Technology, Tokyo University of Science
| | - Daisuke Matsukuma
- Department of Applied Chemistry, Faculty of Science Division I, Tokyo University of Science
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Zhang Y, Wang C, Liu Y, Yao W, Sun Y, Zhang P, Huang L, Wang Z. Fluorescein-5-thiosemicarbazide (FTSC) labeling for fluorescent imaging of pectin-derived oligogalacturonic acid transported in living cells by confocal microscopy. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2283-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Li C, Key JA, Jia F, Dandapat A, Hur S, Cairo CW. Practical labeling methodology for choline-derived lipids and applications in live cell fluorescence imaging. Photochem Photobiol 2014; 90:686-95. [PMID: 24383866 DOI: 10.1111/php.12234] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 12/24/2013] [Indexed: 12/18/2022]
Abstract
Lipids of the plasma membrane participate in a variety of biological processes, and methods to probe their function and cellular location are essential to understanding biochemical mechanisms. Previous reports have established that phosphocholine-containing lipids can be labeled by alkyne groups through metabolic incorporation. Herein, we have tested alkyne, azide and ketone-containing derivatives of choline as metabolic labels of choline-containing lipids in cells. We also show that 17-octadecynoic acid can be used as a complementary metabolic label for lipid acyl chains. We provide methods for the synthesis of cyanine-based dyes that are reactive with alkyne, azide and ketone metabolic labels. Using an improved method for fluorophore conjugation to azide or alkyne-modified lipids by Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC), we apply this methodology in cells. Lipid-labeled cell membranes were then interrogated using flow cytometry and fluorescence microscopy. Furthermore, we explored the utility of this labeling strategy for use in live cell experiments. We demonstrate measurements of lipid dynamics (lateral mobility) by fluorescence photobleaching recovery (FPR). In addition, we show that adhesion of cells to specific surfaces can be accomplished by chemically linking membrane lipids to a functionalized surface. The strategies described provide robust methods for introducing bioorthogonal labels into native lipids.
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Affiliation(s)
- Caishun Li
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton Alberta, T6G 2G2, Canada
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