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Kalailingam P, Mohd‐Kahliab K, Ngan SC, Iyappan R, Melekh E, Lu T, Zien GW, Sharma B, Guo T, MacNeil AJ, MacPherson REK, Tsiani EL, O'Leary DD, Lim KL, Su IH, Gao Y, Richards AM, Kalaria RN, Chen CP, McCarthy NE, Sze SK. Immunotherapy targeting isoDGR-protein damage extends lifespan in a mouse model of protein deamidation. EMBO Mol Med 2023; 15:e18526. [PMID: 37971164 PMCID: PMC10701600 DOI: 10.15252/emmm.202318526] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/21/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023] Open
Abstract
Aging results from the accumulation of molecular damage that impairs normal biochemical processes. We previously reported that age-linked damage to amino acid sequence NGR (Asn-Gly-Arg) results in "gain-of-function" conformational switching to isoDGR (isoAsp-Gly-Arg). This integrin-binding motif activates leukocytes and promotes chronic inflammation, which are characteristic features of age-linked cardiovascular disorders. We now report that anti-isoDGR immunotherapy mitigates lifespan reduction of Pcmt1-/- mouse. We observed extensive accumulation of isoDGR and inflammatory cytokine expression in multiple tissues from Pcmt1-/- and naturally aged WT animals, which could also be induced via injection of isoDGR-modified plasma proteins or synthetic peptides into young WT animals. However, weekly injection of anti-isoDGR mAb (1 mg/kg) was sufficient to significantly reduce isoDGR-protein levels in body tissues, decreased pro-inflammatory cytokine concentrations in blood plasma, improved cognition/coordination metrics, and extended the average lifespan of Pcmt1-/- mice. Mechanistically, isoDGR-mAb mediated immune clearance of damaged isoDGR-proteins via antibody-dependent cellular phagocytosis (ADCP). These results indicate that immunotherapy targeting age-linked protein damage may represent an effective intervention strategy in a range of human degenerative disorders.
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Affiliation(s)
| | | | - SoFong Cam Ngan
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Ranjith Iyappan
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Evelin Melekh
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Tian Lu
- iMarker Lab, Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life SciencesWestlake UniversityHangzhouChina
| | - Gan Wei Zien
- School of Biological SciencesNanyang Technological UniversitySingaporeSingapore
| | - Bhargy Sharma
- School of Biological SciencesNanyang Technological UniversitySingaporeSingapore
| | - Tiannan Guo
- iMarker Lab, Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life SciencesWestlake UniversityHangzhouChina
| | - Adam J MacNeil
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Rebecca EK MacPherson
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Evangelia Litsa Tsiani
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Deborah D O'Leary
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
| | - Kah Leong Lim
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingaporeSingapore
| | - I Hsin Su
- School of Biological SciencesNanyang Technological UniversitySingaporeSingapore
| | - Yong‐Gui Gao
- School of Biological SciencesNanyang Technological UniversitySingaporeSingapore
| | - A Mark Richards
- Department of CardiologyNational University Heart CentreSingaporeSingapore
- Department of CardiologyUniversity of OtagoChristchurchNew Zealand
| | - Raj N Kalaria
- Institute of Neuroscience, Campus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Christopher P Chen
- Memory, Aging and Cognition CentreNational University Health SystemSingaporeSingapore
| | - Neil E McCarthy
- Centre for Immunobiology, The Blizard Institute, Bart's and The London School of Medicine and DentistryQueen Mary University of LondonLondonUK
| | - Siu Kwan Sze
- School of Biological SciencesNanyang Technological UniversitySingaporeSingapore
- Department of Health Sciences, Faculty of Applied Health SciencesBrock UniversitySt. CatharinesONCanada
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Peng L, Deng H, Li J, Lu G, Zhai YS. Plasma Fibronectin as a Novel Predictor of Coronary Heart Disease: A Retrospective Study. J Cardiovasc Dev Dis 2023; 10:415. [PMID: 37887862 PMCID: PMC10607878 DOI: 10.3390/jcdd10100415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/20/2023] [Accepted: 09/23/2023] [Indexed: 10/28/2023] Open
Abstract
Although fibronectin has been associated with the pathogenesis of atherosclerosis, little is currently known about the relationship between plasma fibronectin and coronary heart disease (CHD). This retrospective study aimed to determine the predictive value of plasma fibronectin for CHD and its severity. A total of 1644 consecutive patients who underwent selective coronary angiography were recruited into the present study. The characteristics and results of the clinical examination of all patients were collected. Logistic regression analyses were performed to determine the predictive value of plasma fibronectin for the presence and severity of CHD. Compared with non-CHD patients, the CHD patients showed significantly higher plasma levels of troponin I and creatine kinase isoenzyme, along with lower plasma levels of fibronectin. However, no significant differences were detected in plasma fibronectin among patients with different grades of CHD. The logistic regression model showed that plasma fibronectin remained an independent predictor of CHD after adjustment with a 1.39-fold increased risk for every 1 SD decrease in plasma fibronectin. Nevertheless, plasma fibronectin could not predict the severity of CHD determined by the number of stenosed vessels and the modified Gensini score. This study demonstrated that lower plasma fibronectin might be an independent predictor of CHD, but it may be of no value in predicting the severity of CHD.
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Affiliation(s)
- Longyun Peng
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510800, China; (L.P.); (H.D.); (J.L.)
- Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou 510800, China
| | - Haiwei Deng
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510800, China; (L.P.); (H.D.); (J.L.)
- Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou 510800, China
| | - Jie Li
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510800, China; (L.P.); (H.D.); (J.L.)
- Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou 510800, China
| | - Guihua Lu
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510800, China; (L.P.); (H.D.); (J.L.)
- Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou 510800, China
| | - Yuan-Sheng Zhai
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510800, China; (L.P.); (H.D.); (J.L.)
- Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou 510800, China
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Xiao P, Zhang Y, Zeng Y, Yang D, Mo J, Zheng Z, Wang J, Zhang Y, Zhou Z, Zhong X, Yan W. Impaired angiogenesis in ageing: the central role of the extracellular matrix. J Transl Med 2023; 21:457. [PMID: 37434156 PMCID: PMC10334673 DOI: 10.1186/s12967-023-04315-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/30/2023] [Indexed: 07/13/2023] Open
Abstract
Each step in angiogenesis is regulated by the extracellular matrix (ECM). Accumulating evidence indicates that ageing-related changes in the ECM driven by cellular senescence lead to a reduction in neovascularisation, reduced microvascular density, and an increased risk of tissue ischaemic injury. These changes can lead to health events that have major negative impacts on quality of life and place a significant financial burden on the healthcare system. Elucidating interactions between the ECM and cells during angiogenesis in the context of ageing is neceary to clarify the mechanisms underlying reduced angiogenesis in older adults. In this review, we summarize ageing-related changes in the composition, structure, and function of the ECM and their relevance for angiogenesis. Then, we explore in detail the mechanisms of interaction between the aged ECM and cells during impaired angiogenesis in the older population for the first time, discussing diseases caused by restricted angiogenesis. We also outline several novel pro-angiogenic therapeutic strategies targeting the ECM that can provide new insights into the choice of appropriate treatments for a variety of age-related diseases. Based on the knowledge gathered from recent reports and journal articles, we provide a better understanding of the mechanisms underlying impaired angiogenesis with age and contribute to the development of effective treatments that will enhance quality of life.
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Affiliation(s)
- Ping Xiao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yanli Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Yuting Zeng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Dehong Yang
- Department of Orthopedics Spinal Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiayao Mo
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Ziting Zheng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jilei Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yuxin Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Zhiyan Zhou
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xincen Zhong
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Wenjuan Yan
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Monsen VT, Attramadal H. Structural insights into regulation of CCN protein activities and functions. J Cell Commun Signal 2023:10.1007/s12079-023-00768-5. [PMID: 37245184 DOI: 10.1007/s12079-023-00768-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/07/2023] [Indexed: 05/29/2023] Open
Abstract
CCN proteins play important functions during development, in repair mechanisms following tissue injury, as well as in pathophysiologic mechanisms of metastasis of cancer. CCNs are secreted proteins that have a multimodular structure and are categorized as matricellular proteins. Although the prevailing view is that CCN proteins regulate biologic processes by interacting with a wide array of other proteins in the microenvironment of the extracellular matrix, the molecular mechanisms of action of CCN proteins are still poorly understood. Not dissuading the current view, however, the recent appreciation that these proteins are signaling proteins in their own right and may even be considered preproproteins controlled by endopeptidases to release a C-terminal bioactive peptide has opened new avenues of research. Also, the recent resolution of the crystal structure of two of the domains of CCN3 have provided new knowledge with implications for the entire CCN family. These resolved structures in combination with structural predictions based upon the AlphaFold artificial intelligence tool provide means to shed new light on CCN functions in context of the notable literature in the field. CCN proteins have emerged as important therapeutic targets in several disease conditions, and clinical trials are currently ongoing. Thus, a review that critically discusses structure - function relationship of CCN proteins, in particular as it relates to interactions with other proteins in the extracellular milieu and on the cell surface, as well as to cell signaling activities of these proteins, is very timely. Suggested mechanism for activation and inhibition of signaling by the CCN protein family (graphics generated with BioRender.com ).
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Affiliation(s)
- Vivi Talstad Monsen
- Institute for Surgical Research, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Håvard Attramadal
- Institute for Surgical Research, Oslo University Hospital, Oslo, Norway.
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
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Sun X, Yu J, Wang Y, Luo J, Zhang G, Peng X. Flaxseed oil ameliorates aging in d-galactose induced rats via altering gut microbiota and mitigating oxidative damage. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:6432-6442. [PMID: 35567370 DOI: 10.1002/jsfa.12010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/21/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Aging causes decreased antioxidant capacity and chronic inflammation and may even elevate cancer risks. Previous studies reported that flaxseed oil (FO) can alleviate age-related diseases, including improving alcoholic liver disease, atherosclerosis and diabetes. However, whether the intestinal microbiota accountable for this alleviation is still unknown. This study aims to study the antioxidant effects of FO in an aging rat model and the underlying mechanism between the intestinal microbiota and aging. RESULTS Our results presented that serum and liver antioxidant capacities in FO group were up-regulated, and liver inflammation in FO group was reduced. The 16S rDNA sequencing showed that FO regulated the microbial community, including up-regulation of four families of Lactobacillus and six families of Clostridium. In addition, FO had also adjusted the relative abundance of several genera such as Ruminococcaceae_UCG-005 and Prevotella_9, which may be the key bacteria associated with the aging process. Colonic transcriptome analysis showed that there were 1679 differentially expressed genes (DEGs) in the Model group and the FO group (134 up-regulated and 1545 down-regulated). Gene set enrichment analysis (GSEA) revealed FO down-regulates the expression of the upstream genes Ptprc, Lck, Zap70, Lat and Lcp2 in the T cell receptor signaling pathway. CONCLUSION In conclusion, FO improved antioxidant capacity and reduced intestinal microbial disturbances caused by aging damage, indicating that dietary FO has the potential to fight aging damage. This study provides a more comprehensive view of dietary intervention to improve aging. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xiaoyan Sun
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, China
| | - Juntong Yu
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, China
| | - Yong Wang
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, China
| | - Jianming Luo
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, China
| | - Guangwen Zhang
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, China
| | - Xichun Peng
- Department of Food Science and Engineering, Jinan University, Guangzhou, Guangdong, 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] [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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