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Wang X, Yin Z, Liu H, Wang Z, Zhu X, Ye Y. A Novel NIR Fluorescence Probe with AIE Property to Image Viscosity in Nystatin-Induced Cell Model. J Fluoresc 2024:10.1007/s10895-024-03706-9. [PMID: 38676771 DOI: 10.1007/s10895-024-03706-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/05/2024] [Indexed: 04/29/2024]
Abstract
As one of the most significant parameters in cellular microenvironment, viscosity levels could be used to determine the metabolic process of bioactive substances within cells. Abnormal viscosity levels are closely associated with a series of diseases. Therefore, the design and synthesis of fluorescent probes that can monitor changes of intracellular viscosity in real-time is of great significance for the study of disease development process. Here, a new viscosity-recognized NIR fluorescence probe W1 based on quinoline-malonitrile is synthesized, and it is not susceptible to interference substances. Besides, AIE probe W1 shows fast response, excellent photostability, low cytotoxicity, good linear relationship between fluorescence intensity value and viscosity. Based on the above advantages, probe W1 is used to image the change of viscosity level in the cell model induced by nystatin.
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Affiliation(s)
- Xiaokai Wang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhan Yin
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Haoran Liu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Ziming Wang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaofei Zhu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yong Ye
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
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Wang J, Lundström SL, Lu W, Huang Y, Rodin S, Zubarev RA. SpotLight proteomics identifies variable sequences of blood antibodies specific against deamidated human serum albumin. Mol Cell Proteomics 2023:100589. [PMID: 37301377 PMCID: PMC10345337 DOI: 10.1016/j.mcpro.2023.100589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/23/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023] Open
Abstract
Spontaneous deamidation of asparaginyl residues in proteins, if not repaired or cleared, can set in motion a cascade that leads to deteriorated health. Previously, we have discovered that deamidated human serum albumin (HSA) is elevated in blood of patients with Alzheimer's disease and other neurodegenerative diseases, while the level of endogenous antibodies against deamidated HSA is significantly diminished, creating an imbalance between the risk factor and the defense against it. Endogenous antibodies against deamidated proteins are still unexplored. In the current study, we employed the SpotLight proteomics approach to identify novel amino acid sequences in antibodies specific to deamidated HSA. The results provide new insights into the clearance mechanism of deamidated proteins, a possible avenue for prevention of neurodegeneration.
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Affiliation(s)
- Jijing Wang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden
| | - Susanna L Lundström
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden
| | - Weiqi Lu
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yiqi Huang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Institute of Virology, School of Medicine, Technical University of Munich, Munich, Germany
| | - Sergey Rodin
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Roman A Zubarev
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden.
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Wang J, Zhang YR, Shen XN, Han J, Cui M, Tan L, Dong Q, Zubarev RA, Yu JT. Deamidation-related blood biomarkers show promise for early diagnostics of neurodegeneration. Biomark Res 2022; 10:91. [PMID: 36575499 PMCID: PMC9795668 DOI: 10.1186/s40364-022-00435-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/13/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND The strongest risk factor of neurodegenerative diseases (NDDs) is aging. Spontaneous asparaginyl deamidation leading to formation of isoaspartate (isoAsp) has been correlated with protein aggregation in NDDs. METHODS Two cohorts consisting of 140 subjects were studied. Cohort 1 contained patients with AD and healthy controls, while Cohort 2 recruited subjects with mild cognitive impairment (MCI), vascular dementia (VaD), frontotemporal dementia (FTD), Parkinson's disease (PD) and healthy controls. The levels of isoAsp in plasma human albumin (HSA), the most abundant protein in plasma, as well as the levels of immunoglobulin G (IgG) specific against deamidated HSA were measured. Apart from the memory tests, plasma biomarkers for NDDs reported in literature were also quantified, including amyloid beta (Aβ) peptides Aβ40 and Aβ42, neurofilament light protein (NfL), glial fibrillary acidic protein (GFAP) and phosphorylated tau 181 (p-tau181) protein. RESULTS Deamidation products of blood albumin were significantly elevated in vascular dementia and frontotemporal dementia (P < 0.05), but less so in PD. Intriguingly, the deamidation levels were significantly (P < 0.01) associated with the memory test scores for all tested subjects. Deamidation biomarkers performed superiorly (accuracy up to 92%) compared with blood biomarkers Aß42/Aß40, NfL, GFAP and p-tau181 in separating mild cognitive impairment from healthy controls. CONCLUSION We demonstrated the diagnostic capacity of deamidation-related biomarkers in predicting NDDs at the early stage of disease, and the biomarker levels significantly correlated with cognitive decline, strongly supporting the role of deamidation in triggering neurodegeneration and early stages of disease development. Prospective longitudinal studies with a longer observation period and larger cohorts should provide a more detailed picture of the deamidation role in NDD progression.
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Affiliation(s)
- Jijing Wang
- grid.4714.60000 0004 1937 0626Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Ya-Ru Zhang
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China ,National Center for Neurological Disorders, Shanghai, China
| | - Xue-Ning Shen
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China ,National Center for Neurological Disorders, Shanghai, China
| | - Jinming Han
- grid.413259.80000 0004 0632 3337Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Mei Cui
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China ,National Center for Neurological Disorders, Shanghai, China
| | - Lan Tan
- grid.410645.20000 0001 0455 0905Department of Neurology, Qingdao Municipal Hospital Group, Qingdao University, Qingdao, China
| | - Qiang Dong
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China ,National Center for Neurological Disorders, Shanghai, China
| | - Roman A. Zubarev
- grid.4714.60000 0004 1937 0626Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jin-Tai Yu
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China ,National Center for Neurological Disorders, Shanghai, China
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Wang J, Mukherjee S, Zubarev RA. Isoaspartate and neurodegeneration. Aging (Albany NY) 2022; 14:8882-8883. [PMID: 36446387 PMCID: PMC9740368 DOI: 10.18632/aging.204420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/21/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Jijing Wang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Sourav Mukherjee
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Roman A Zubarev
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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Liu B, Huang L, Xu R, Fan H, Wang Y. An Improved Isotope Labelling Method for Quantifying Deamidated Cobratide Using High-Resolution Quadrupole-Orbitrap Mass Spectrometry. Molecules 2022; 27:molecules27196154. [PMID: 36234709 PMCID: PMC9572859 DOI: 10.3390/molecules27196154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
Protein deamidation can severely alter the physicochemical characteristics and biological functions of protein therapeutics. Cobratide is a non-addictive analgesic with wide clinical acceptance. However, the Asn residue at position 48 from the N-terminus of the cobratide amino acid sequence (N48) tends to degrade during purification, storage, and transport. This characteristic could severely affect the drug safety and clinical efficacy of cobratide. Traditional methods for quantitating deamidation reported in previous research are characterised by low efficiency and accuracy; the quality control of cobratide via this method is limited. Herein, we developed an improved 18O-labelling method based on the detection of a unique peptide (i.e., the protein fragment of cobratide containing the N48 deamidation hotspot after enzymolysis) using an Orbitrap high-resolution mass spectrometer to quantify deamidated cobratide. The limits of detection and quantification of this method reached 0.02 and 0.025 μM, respectively, and inter- and intra-day precision values of the method were <3%. The accuracy of the 18O-labelling strategy was validated by using samples containing synthesised peptides with a known ratio of deamidation impurities and also by comparing the final total deamidation results with our previously developed capillary electrophoresis method. The recoveries for deamidation (Asp), deamidation isomerisation (iso-Asp), and total deamidation were 101.52 ± 1.17, 102.42 ± 1.82, and 103.55 ± 1.07, respectively. The robustness of the method was confirmed by verifying the chromatographic parameters. Our results demonstrate the applicability of the 18O-labelling strategy for detecting protein deamidation and lay a robust foundation for protein therapeutics studies and drug quality consistency evaluations.
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Affiliation(s)
- Bo Liu
- National Institutes for Food and Drug Control, 31st Huatuo Rd., Daxing Dist., Beijing 102629, China
- NMPA Key Laboratory for Quality Research and Evaluation of Chemical Drugs, Beijing 102629, China
| | - Lu Huang
- National Institutes for Food and Drug Control, 31st Huatuo Rd., Daxing Dist., Beijing 102629, China
- NMPA Key Laboratory for Quality Research and Evaluation of Chemical Drugs, Beijing 102629, China
| | - Rongrong Xu
- National Institutes for Food and Drug Control, 31st Huatuo Rd., Daxing Dist., Beijing 102629, China
- NMPA Key Laboratory for Quality Research and Evaluation of Chemical Drugs, Beijing 102629, China
| | - Huihong Fan
- National Institutes for Food and Drug Control, 31st Huatuo Rd., Daxing Dist., Beijing 102629, China
- NMPA Key Laboratory for Quality Research and Evaluation of Chemical Drugs, Beijing 102629, China
- Correspondence:
| | - Yue Wang
- National Institutes for Food and Drug Control, 31st Huatuo Rd., Daxing Dist., Beijing 102629, China
- NMPA Key Laboratory for Quality Research and Evaluation of Chemical Drugs, Beijing 102629, China
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Wang J, Guo C, Meng Z, Zwan MD, Chen X, Seelow S, Lundström SL, Rodin S, Teunissen CE, Zubarev RA. Testing the link between isoaspartate and Alzheimer's disease etiology. Alzheimers Dement 2022; 19:1491-1502. [PMID: 35924765 DOI: 10.1002/alz.12735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/09/2022]
Abstract
Isoaspartate (isoAsp) is a damaging amino acid residue formed in proteins as a result of spontaneous deamidation. IsoAsp disrupts protein structures, making them prone to aggregation. Here we strengthened the link between isoAsp and Alzheimer's disease (AD) by novel approaches to isoAsp analysis in human serum albumin (HSA), the most abundant blood protein and a major carrier of amyloid beta (Aβ) and phosphorylated tau (p-tau) in blood. We discovered a reduced amount of anti-isoAsp antibodies (P < 0.0001), an elevated isoAsp level in HSA (P < 0.001), more HSA aggregates (P < 0.0001), and increased levels of free Aβ (P < 0.01) in AD blood compared to controls. We also found that deamidation significantly reduces HSA capacity to bind with Aβ and p-tau (P < 0.05). These suggest the presence in AD of a bottleneck in clearance of Aβ and p-tau, leading to their increased concentrations in the brain and facilitating their aggregations there.
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Affiliation(s)
- Jijing Wang
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden
| | - Cong Guo
- Department of Physics and International Centre for Quantum and Molecular Structures, College of Sciences, Shanghai University, Shanghai, China
| | - Zhaowei Meng
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden
| | - Marissa D Zwan
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Xin Chen
- Department of Physics and International Centre for Quantum and Molecular Structures, College of Sciences, Shanghai University, Shanghai, China
| | - Sven Seelow
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden
| | - Susanna L Lundström
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden
| | - Sergey Rodin
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden.,Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Charlotte E Teunissen
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Roman A Zubarev
- Department of Medical Biophysics and Biochemistry, Karolinska Institutet, Stockholm, Sweden.,Endocrinology Research Centre, Moscow, Russian Federation.,Department of Pharmacological & Technological Chemistry, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation
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7
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Wang J, Rodin S, Saei AA, Zhang X, Zubarev RA. First Experimental Evidence for Reversibility of Ammonia Loss from Asparagine. Int J Mol Sci 2022; 23:ijms23158371. [PMID: 35955504 PMCID: PMC9368827 DOI: 10.3390/ijms23158371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/14/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022] Open
Abstract
Ammonia loss from L-asparaginyls is a nonenzymatic reaction spontaneously occurring in all proteins and eventually resulting in damaging isoaspartate residues that hamper protein function and induce proteinopathy related to aging. Here, we discuss theoretical considerations supporting the possibility of a full repair reaction and present the first experimental evidence of its existence. If confirmed, the true repair of L-asparaginyl deamidation could open new avenues for preventing aging and neurodegenerative diseases.
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Affiliation(s)
- Jijing Wang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Stockholm, Sweden; (J.W.); (S.R.); (A.A.S.); (X.Z.)
| | - Sergey Rodin
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Stockholm, Sweden; (J.W.); (S.R.); (A.A.S.); (X.Z.)
- Department of Surgical Sciences, Uppsala University, SE-751 05 Uppsala, Sweden
| | - Amir Ata Saei
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Stockholm, Sweden; (J.W.); (S.R.); (A.A.S.); (X.Z.)
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Xuepei Zhang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Stockholm, Sweden; (J.W.); (S.R.); (A.A.S.); (X.Z.)
| | - Roman A. Zubarev
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 65 Stockholm, Sweden; (J.W.); (S.R.); (A.A.S.); (X.Z.)
- Endocrinology Research Centre, 115478 Moscow, Russia
- Department of Pharmacological & Technological Chemistry, I.M. Sechenov First Moscow State Medical University, 119146 Moscow, Russia
- Correspondence:
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