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Dong W, Yang X, Li X, Wei S, An C, Zhang J, Shi X, Dong S. Investigation of N-Glycan Functions in Receptor for Advanced Glycation End Products V Domain through Chemical Glycoprotein Synthesis. J Am Chem Soc 2024; 146:18270-18280. [PMID: 38917169 DOI: 10.1021/jacs.4c01413] [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: 06/27/2024]
Abstract
The receptor for advanced glycation end products (RAGE) plays a crucial role in inflammation-related pathways and various chronic diseases. Despite the recognized significance of N-glycosylation in the ligand-binding V domain (VD) of RAGE, a comprehensive understanding of the site-activity and structure-activity relationships is lacking due to the challenges in obtaining homogeneous glycoprotein samples through biological expression. Here, we combined chemical and chemoenzymatic approaches to synthesize RAGE-VD and its congeners with Asn3-glycosylation by incorporating precise N-glycan structures. Evaluation of these samples revealed that, in comparison to other RAGE-VD forms, α2,6-sialylated N-glycosylation at the Asn3 site results in more potent inhibition of HMGB1-induced nuclear factor-κB (NF-κB) expression in RAGE-overexpressing cells. Hydrogen/deuterium exchange-mass spectrum analysis revealed a sialylated RAGE-VD-induced interaction region within HMGB1. Conversely, Asn3 N-glycosylation in VD has negligible effects on RAGE-VD/S100B interactions. This study established an approach for accessing homogeneously glycosylated RAGE-VD and explored the modulatory effects of N-glycosylation on the interactions between RAGE-VD and its ligand proteins.
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Affiliation(s)
- Weidong Dong
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xingyue Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xinyu Li
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Sheng Wei
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chuanjing An
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jun Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaomeng Shi
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Suwei Dong
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Hernández-Ortega K, Canul-Euan AA, Solis-Paredes JM, Borboa-Olivares H, Reyes-Muñoz E, Estrada-Gutierrez G, Camacho-Arroyo I. S100B actions on glial and neuronal cells in the developing brain: an overview. Front Neurosci 2024; 18:1425525. [PMID: 39027325 PMCID: PMC11256909 DOI: 10.3389/fnins.2024.1425525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/20/2024] [Indexed: 07/20/2024] Open
Abstract
The S100B is a member of the S100 family of "E" helix-loop- "F" helix structure (EF) hand calcium-binding proteins expressed in diverse glial, selected neuronal, and various peripheral cells, exerting differential effects. In particular, this review compiles descriptions of the detection of S100B in different brain cells localized in specific regions during the development of humans, mice, and rats. Then, it summarizes S100B's actions on the differentiation, growth, and maturation of glial and neuronal cells in humans and rodents. Particular emphasis is placed on S100B regulation of the differentiation and maturation of astrocytes, oligodendrocytes (OL), and the stimulation of dendritic development in serotoninergic and cerebellar neurons during embryogenesis. We also summarized reports that associate morphological alterations (impaired neurite outgrowth, neuronal migration, altered radial glial cell morphology) of specific neural cell groups during neurodevelopment and functional disturbances (slower rate of weight gain, impaired spatial learning) with changes in the expression of S100B caused by different conditions and stimuli as exposure to stress, ethanol, cocaine and congenital conditions such as Down's Syndrome. Taken together, this evidence highlights the impact of the expression and early actions of S100B in astrocytes, OL, and neurons during brain development, which is reflected in the alterations in differentiation, growth, and maturation of these cells. This allows the integration of a spatiotemporal panorama of S100B actions in glial and neuronal cells in the developing brain.
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Affiliation(s)
- Karina Hernández-Ortega
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, México City, Mexico
| | - Arturo Alejandro Canul-Euan
- Department of Developmental Neurobiology, National Institute of Perinatology Isidro Espinosa de los Reyes (INPer), Mexico City, Mexico
| | | | | | | | | | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, México City, Mexico
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Mass spectrometry of intact membrane proteins: shifting towards a more native-like context. Essays Biochem 2023; 67:201-213. [PMID: 36807530 PMCID: PMC10070488 DOI: 10.1042/ebc20220169] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 02/23/2023]
Abstract
Integral membrane proteins are involved in a plethora of biological processes including cellular signalling, molecular transport, and catalysis. Many of these functions are mediated by non-covalent interactions with other proteins, substrates, metabolites, and surrounding lipids. Uncovering such interactions and deciphering their effect on protein activity is essential for understanding the regulatory mechanisms underlying integral membrane protein function. However, the detection of such dynamic complexes has proven to be challenging using traditional approaches in structural biology. Native mass spectrometry has emerged as a powerful technique for the structural characterisation of membrane proteins and their complexes, enabling the detection and identification of protein-binding partners. In this review, we discuss recent native mass spectrometry-based studies that have characterised non-covalent interactions of membrane proteins in the presence of detergents or membrane mimetics. We additionally highlight recent progress towards the study of membrane proteins within native membranes and provide our perspective on how these could be combined with recent developments in instrumentation to investigate increasingly complex biomolecular systems.
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Lin IH, Kamnaksh A, Aniceto R, McCullough J, Bekdash R, Eklund M, Ghatan PH, Risling M, Svensson M, Bellander BM, Nelson DW, Thelin EP, Agoston DV. Time-Dependent Changes in the Biofluid Levels of Neural Injury Markers in Severe Traumatic Brain Injury Patients-Cerebrospinal Fluid and Cerebral Microdialysates: A Longitudinal Prospective Pilot Study. Neurotrauma Rep 2023; 4:107-117. [PMID: 36895820 PMCID: PMC9989523 DOI: 10.1089/neur.2022.0076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023] Open
Abstract
Monitoring protein biomarker levels in the cerebrospinal fluid (CSF) can help assess injury severity and outcome after traumatic brain injury (TBI). Determining injury-induced changes in the proteome of brain extracellular fluid (bECF) can more closely reflect changes in the brain parenchyma, but bECF is not routinely available. The aim of this pilot study was to compare time-dependent changes of S100 calcium-binding protein B (S100B), neuron-specific enolase (NSE), total Tau, and phosphorylated Tau (p-Tau) levels in matching CSF and bECF samples collected at 1, 3, and 5 days post-injury from severe TBI patients (n = 7; GCS 3-8) using microcapillary-based western analysis. We found that time-dependent changes in CSF and bECF levels were most pronounced for S100B and NSE, but there was substantial patient-to-patient variability. Importantly, the temporal pattern of biomarker changes in CSF and bECF samples showed similar trends. We also detected two different immunoreactive forms of S100B in both CSF and bECF samples, but the contribution of the different immunoreactive forms to total immunoreactivity varied from patient to patient and time point to time point. Our study is limited, but it illustrates the value of both quantitative and qualitative analysis of protein biomarkers and the importance of serial sampling for biofluid analysis after severe TBI.
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Affiliation(s)
- I-Hsuan Lin
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Alaa Kamnaksh
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Roxanne Aniceto
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Jesse McCullough
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Ramsey Bekdash
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Michael Eklund
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
| | - Per Hamid Ghatan
- Department of Neuroscience, Uppsala University Hospital, Uppsala, Sweden
| | - Mårten Risling
- Department of Neuroscience, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Svensson
- Department of Clinical Neuroscience, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Bo-Michael Bellander
- Department of Clinical Neuroscience, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - David W Nelson
- Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden.,Section of Perioperative Medicine and Intensive Care, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Eric Peter Thelin
- Department of Clinical Neuroscience, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Neurology, Karolinska University Hospital, Stockholm, Sweden
| | - Denes V Agoston
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland, USA
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New opportunities in integrative structural modeling. Curr Opin Struct Biol 2022; 77:102488. [PMID: 36279817 DOI: 10.1016/j.sbi.2022.102488] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 12/14/2022]
Abstract
Integrative structural modeling enables structure determination of macromolecules and their complexes by integrating data from multiple sources. It has been successfully used to characterize macromolecular structures when a single structural biology technique was insufficient. Recent developments in cellular structural biology, including in-cell cryo-electron tomography and artificial intelligence-based structure prediction, have created new opportunities for integrative structural modeling. Here, we will review these opportunities along with the latest developments in integrative modeling methods and their applications. We also highlight open challenges and directions for further development.
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Longterm Increased S100B Enhances Hippocampal Progenitor Cell Proliferation in a Transgenic Mouse Model. Int J Mol Sci 2022; 23:ijms23179600. [PMID: 36076994 PMCID: PMC9455494 DOI: 10.3390/ijms23179600] [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: 06/11/2022] [Revised: 07/13/2022] [Accepted: 08/19/2022] [Indexed: 12/11/2022] Open
Abstract
(1) The neurotrophic protein S100B is a marker of brain injury and has been associated with neuroregeneration. In S100Btg mice rendering 12 copies of the murine S100B gene we evaluated whether S100B may serve as a treatment option. (2) In juvenile, adult, and one-year-old S100Btg mice (female and male; n = 8 per group), progenitor cell proliferation was quantified in the subgranular zone (SGZ) and the granular cell layer (GCL) of the dentate gyrus with the proliferative marker Ki67 and BrdU (50 mg/kg). Concomitant signaling was quantified utilizing glial fibrillary acidic protein (GFAP), apolipoprotein E (ApoE), brain-derived neurotrophic factor (BDNF), and the receptor for advanced glycation end products (RAGE) immunohistochemistry. (3) Progenitor cell proliferation in the SGZ and migration to the GCL was enhanced. Hippocampal GFAP was reduced in one-year-old S100Btg mice. ApoE in the hippocampus and frontal cortex of male and BDNF in the frontal cortex of female S100Btg mice was reduced. RAGE was not affected. (4) Enhanced hippocampal neurogenesis in S100Btg mice was not accompanied by reactive astrogliosis. Sex- and brain region-specific variations of ApoE and BDNF require further elucidations. Our data reinforce the importance of this S100Btg model in evaluating the role of S100B in neuroregenerative medicine.
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