1
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Ullah R, Lee EJ. Advances in Amyloid-β Clearance in the Brain and Periphery: Implications for Neurodegenerative Diseases. Exp Neurobiol 2023; 32:216-246. [PMID: 37749925 PMCID: PMC10569141 DOI: 10.5607/en23014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/25/2023] [Accepted: 08/23/2023] [Indexed: 09/27/2023] Open
Abstract
This review examines the role of impaired amyloid-β clearance in the accumulation of amyloid-β in the brain and the periphery, which is closely associated with Alzheimer's disease (AD) and cerebral amyloid angiopathy (CAA). The molecular mechanism underlying amyloid-β accumulation is largely unknown, but recent evidence suggests that impaired amyloid-β clearance plays a critical role in its accumulation. The review provides an overview of recent research and proposes strategies for efficient amyloid-β clearance in both the brain and periphery. The clearance of amyloid-β can occur through enzymatic or non-enzymatic pathways in the brain, including neuronal and glial cells, blood-brain barrier, interstitial fluid bulk flow, perivascular drainage, and cerebrospinal fluid absorption-mediated pathways. In the periphery, various mechanisms, including peripheral organs, immunomodulation/immune cells, enzymes, amyloid-β-binding proteins, and amyloid-β-binding cells, are involved in amyloid-β clearance. Although recent findings have shed light on amyloid-β clearance in both regions, opportunities remain in areas where limited data is available. Therefore, future strategies that enhance amyloid-β clearance in the brain and/or periphery, either through central or peripheral clearance approaches or in combination, are highly encouraged. These strategies will provide new insight into the disease pathogenesis at the molecular level and explore new targets for inhibiting amyloid-β deposition, which is central to the pathogenesis of sporadic AD (amyloid-β in parenchyma) and CAA (amyloid-β in blood vessels).
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Affiliation(s)
- Rahat Ullah
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, School of Medicine, The Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Neurology, School of Medicine, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Eun Jeong Lee
- Department of Brain Science, Ajou University School of Medicine, Suwon 16499, Korea
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2
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Rai M, Curley M, Coleman Z, Demontis F. Contribution of proteases to the hallmarks of aging and to age-related neurodegeneration. Aging Cell 2022; 21:e13603. [PMID: 35349763 PMCID: PMC9124314 DOI: 10.1111/acel.13603] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/10/2022] [Accepted: 03/13/2022] [Indexed: 12/20/2022] Open
Abstract
Protein quality control ensures the degradation of damaged and misfolded proteins. Derangement of proteostasis is a primary cause of aging and age-associated diseases. The ubiquitin-proteasome and autophagy-lysosome play key roles in proteostasis but, in addition to these systems, the human genome encodes for ~600 proteases, also known as peptidases. Here, we examine the role of proteases in aging and age-related neurodegeneration. Proteases are present across cell compartments, including the extracellular space, and their substrates encompass cellular constituents, proteins with signaling functions, and misfolded proteins. Proteolytic processing by proteases can lead to changes in the activity and localization of substrates or to their degradation. Proteases cooperate with the autophagy-lysosome and ubiquitin-proteasome systems but also have independent proteolytic roles that impact all hallmarks of cellular aging. Specifically, proteases regulate mitochondrial function, DNA damage repair, cellular senescence, nutrient sensing, stem cell properties and regeneration, protein quality control and stress responses, and intercellular signaling. The capacity of proteases to regulate cellular functions translates into important roles in preserving tissue homeostasis during aging. Consequently, proteases influence the onset and progression of age-related pathologies and are important determinants of health span. Specifically, we examine how certain proteases promote the progression of Alzheimer's, Huntington's, and/or Parkinson's disease whereas other proteases protect from neurodegeneration. Mechanistically, cleavage by proteases can lead to the degradation of a pathogenic protein and hence impede disease pathogenesis. Alternatively, proteases can generate substrate byproducts with increased toxicity, which promote disease progression. Altogether, these studies indicate the importance of proteases in aging and age-related neurodegeneration.
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Affiliation(s)
- Mamta Rai
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Michelle Curley
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Zane Coleman
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Fabio Demontis
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
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3
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Hur JY. γ-Secretase in Alzheimer's disease. Exp Mol Med 2022; 54:433-446. [PMID: 35396575 PMCID: PMC9076685 DOI: 10.1038/s12276-022-00754-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 01/05/2022] [Accepted: 01/20/2022] [Indexed: 12/16/2022] Open
Abstract
Alzheimer's disease (AD) is caused by synaptic and neuronal loss in the brain. One of the characteristic hallmarks of AD is senile plaques containing amyloid β-peptide (Aβ). Aβ is produced from amyloid precursor protein (APP) by sequential proteolytic cleavages by β-secretase and γ-secretase, and the polymerization of Aβ into amyloid plaques is thought to be a key pathogenic event in AD. Since γ-secretase mediates the final cleavage that liberates Aβ, γ-secretase has been widely studied as a potential drug target for the treatment of AD. γ-Secretase is a transmembrane protein complex containing presenilin, nicastrin, Aph-1, and Pen-2, which are sufficient for γ-secretase activity. γ-Secretase cleaves >140 substrates, including APP and Notch. Previously, γ-secretase inhibitors (GSIs) were shown to cause side effects in clinical trials due to the inhibition of Notch signaling. Therefore, more specific regulation or modulation of γ-secretase is needed. In recent years, γ-secretase modulators (GSMs) have been developed. To modulate γ-secretase and to understand its complex biology, finding the binding sites of GSIs and GSMs on γ-secretase as well as identifying transiently binding γ-secretase modulatory proteins have been of great interest. In this review, decades of findings on γ-secretase in AD are discussed.
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Affiliation(s)
- Ji-Yeun Hur
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
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4
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Finding New Ways How to Control BACE1. J Membr Biol 2022; 255:293-318. [PMID: 35305135 DOI: 10.1007/s00232-022-00225-1] [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: 02/02/2022] [Accepted: 02/24/2022] [Indexed: 01/18/2023]
Abstract
Recently, all applications of BACE1 inhibitors failed as therapeutical targets for Alzheimer´s disease (AD) due to severe side effects. Therefore, alternative ways for treatment development are a hot research topic. The present analysis investigates BACE1 protein-protein interaction networks and attempts to solve the absence of complete knowledge about pathways involving BACE1. A bioinformatics analysis matched the functions of the non-substrate interaction network with Voltage-gated potassium channels, which also appear as top priority protein nodes. Targeting BACE1 interactions with PS1 and GGA-s, blocking of BACE1 access to APP by BRI3 and RTN-s, activation of Wnt signaling and upregulation of β-catenin, and brain delivery of the extracellular domain of p75NTR, are the main alternatives to the use of BACE 1 inhibitors highlighted by the analysis. The pathway enrichment analysis also emphasized substrates and substrate candidates with essential biological functions, which cleavage must remain controlled. They include ephrin receptors, ROBO1, ROBO2, CNTN-s, CASPR-s, CD147, CypB, TTR, APLP1/APLP2, NRXN-s, and PTPR-s. The analysis of the interaction subnetwork of BACE1 functionally related to inflammation identified a connection to three cardiomyopathies, which supports the hypothesis of the common molecular mechanisms with AD. A lot of potential shows the regulation of BACE1 activity through post-translational modifications. The interaction network of BACE1 and its phosphorylation enzyme CSNK1D functionally match the Circadian clock, p53, and Hedgehog signaling pathways. The regulation of BACE1 glycosylation could be achieved through N-acetylglucosamine transferases, α-(1→6)-fucosyltransferase, β-galactoside α-(2→6)-sialyltransferases, galactosyltransferases, and mannosidases suggested by the interaction network analysis of BACE1-MGAT3. The present analysis proposes possibilities for the alternative control of AD pathology.
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5
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Du J, Li S, Su Y, Wang H, Liu H, Cui H. The role of extracellular matrix metalloproteinase inducer on the action of dihydrotestosterone against the cellular damage induced by Aβ 42. Mol Cell Endocrinol 2019; 498:110536. [PMID: 31401349 DOI: 10.1016/j.mce.2019.110536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 11/24/2022]
Abstract
Clinical studies have revealed that the risk of Alzheimer's disease (AD) in men is increased by age-related androgen depletion. The level of β-amyloid (Aβ) is elevated in the brains of AD patients, and Aβ is believed to play a critical role in the pathology of AD. Some studies have indicated that androgens affect AD risk by regulating the metabolism of Aβ by an unclear mechanism. In this study, we investigated the role of the extracellular matrix metalloproteinase inducer (CD147) in this action. Initially, we demonstrated that androgens positively regulate the expression of CD147 in adult male rats and SH-SY5Y cells. Furthermore, this regulation may involve androgen receptor (AR). Additionally, interference of CD147 expression decreased the clearance of Aβ in culture medium and reduced cell viability. It also affected the morphology of the cells and the expression of apoptosis-related proteins. Finally, we found that interference of CD147 expression blocked the dihydrotestosterone (DHT)-induced reduction in Aβ and the protection of cells. DHT regulates MMP-2's expression through CD147. Together, these results imply that androgen regulation of Aβ and cell protection may be affected by interfering with the expression of CD147.
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Affiliation(s)
- Juan Du
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China; Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China; Human Brain Bank, Hebei Medical University, Shijiazhuang, China
| | - Sha Li
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China; Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China; Human Brain Bank, Hebei Medical University, Shijiazhuang, China
| | - Yuhong Su
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China; Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Haidong Wang
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
| | - Hanjie Liu
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China; The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Huixian Cui
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China; Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China; Human Brain Bank, Hebei Medical University, Shijiazhuang, China.
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6
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Hong P, Zhang X, Gao S, Wang P. Role of monocarboxylate transporter 4 in Alzheimer disease. Neurotoxicology 2019; 76:191-199. [PMID: 31738978 DOI: 10.1016/j.neuro.2019.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/09/2019] [Accepted: 11/11/2019] [Indexed: 12/13/2022]
Abstract
The pathological process of Alzheimer disease (AD) is closely related to energy metabolism disorders. In the nervous system, monocarboxylate transporter 4 (MCT4) is expressed in the glial cell membrane and is responsible for transporting intracellular lactic acid. In this study, we found that MCT4 expression was elevated in the cerebrospinal fluid of patients with mild cognitive impairment. Two- and three-month-old APPswe/PS1dE9 (APP/PS1) mice and C57 mice were studied. The APP/PS1 mice began to show cognitive decline at 3 months of age and MCT4 in the hippocampus of 2- and 3-month old APP/PS1 mice was higher than that of C57 mice. This change is similar to that in people with mild cognitive impairment. Subsequently, MCT4 overexpression/siRNA lentiviral particles were used to establish stable primary astrocytes. Overexpression and knockdown of MCT4 had no significant effect on glial cell apoptosis. Transfected astrocytes were co-cultured with neurons. Overexpression of cytoplasmic MCT4 increased the expression of Aβ42, γ-secretase, and CD147 in the co-culture system; in addition, the growth ability of primary neurons decreased significantly, extracellular lactic acid increased, and neuronal apoptosis increased. In AD model mice, siMCT4 injection improved cognitive ability, reduced neuronal apoptosis, and reduced γ-secretase expression. Taken together, these results suggest that MCT4 is involved in energy metabolism during early pathological processes in AD, and suppression of MCT4 represents a new potential neuroprotective factor for AD.
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Affiliation(s)
- Ping Hong
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Xiaoyi Zhang
- Department of Administration Management, Weifang People's Hospital, Weifang, Shandong Province, 261000, China
| | - Shichao Gao
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Peichang Wang
- Clinical Laboratory of Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
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7
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Yong Y, Zhang R, Liu Z, Wei D, Shang Y, Wu J, Zhang Z, Li C, Chen Z, Bian H. Gamma‐secretase complex‐dependent intramembrane proteolysis of CD147 regulates the Notch1 signaling pathway in hepatocellular carcinoma. J Pathol 2019; 249:255-267. [DOI: 10.1002/path.5316] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/30/2019] [Accepted: 06/16/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Yu‐Le Yong
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Ren‐Yu Zhang
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Ze‐Kun Liu
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Ding Wei
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Yu‐Kui Shang
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Jiao Wu
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Zhi‐Yun Zhang
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Can Li
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Zhi‐Nan Chen
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
| | - Huijie Bian
- National Translational Science Center for Molecular Medicine, Department of Cell BiologyFourth Military Medical University Xi'an PR China
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8
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Resveratrol Abrogates Hypoxia-Induced Up-Regulation of Exosomal Amyloid-β Partially by Inhibiting CD147. Neurochem Res 2019; 44:1113-1126. [DOI: 10.1007/s11064-019-02742-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/14/2022]
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9
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Cui J, Zhang W, Huang E, Wang J, Liao J, Li R, Yu X, Zhao C, Zeng Z, Shu Y, Zhang R, Yan S, Lei J, Yang C, Wu K, Wu Y, Huang S, Ji X, Li A, Gong C, Yuan C, Zhang L, Liu W, Huang B, Feng Y, An L, Zhang B, Dai Z, Shen Y, Luo W, Wang X, Huang A, Luu HH, Reid RR, Wolf JM, Thinakaran G, Lee MJ, He TC. BMP9-induced osteoblastic differentiation requires functional Notch signaling in mesenchymal stem cells. J Transl Med 2019; 99:58-71. [PMID: 30353129 PMCID: PMC6300564 DOI: 10.1038/s41374-018-0087-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/28/2018] [Accepted: 05/14/2018] [Indexed: 01/12/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent progenitors that can differentiate into multiple lineages including osteoblastic lineage. Osteogenic differentiation of MSCs is a cascade that recapitulates most, if not all, of the molecular events occurring during embryonic skeletal development, which is regulated by numerous signaling pathways including bone morphogenetic proteins (BMPs). Through a comprehensive analysis of the osteogenic activity, we previously demonstrated that BMP9 is the most potent BMP for inducing bone formation from MSCs both in vitro and in vivo. However, as one of the least studied BMPs, the essential mediators of BMP9-induced osteogenic signaling remain elusive. Here we show that BMP9-induced osteogenic signaling in MSCs requires intact Notch signaling. While the expression of Notch receptors and ligands are readily detectable in MSCs, Notch inhibitor and dominant-negative Notch1 effectively inhibit BMP9-induced osteogenic differentiation in vitro and ectopic bone formation in vivo. Genetic disruption of Notch pathway severely impairs BMP9-induced osteogenic differentiation and ectopic bone formation from MSCs. Furthermore, while BMP9-induced expression of early-responsive genes is not affected by defective Notch signaling, BMP9 upregulates the expression of Notch receptors and ligands at the intermediate stage of osteogenic differentiation. Taken together, these results demonstrate that Notch signaling may play an essential role in coordinating BMP9-induced osteogenic differentiation of MSCs.
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Affiliation(s)
- Jing Cui
- grid.412461.4Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China ,0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Wenwen Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA. .,Stem Cell Research Laboratory, Department of Obstetrics and Gynecology, the Affiliated University-Town Hospital, Chongqing Medical University, 401331, Chongqing, China.
| | - Enyi Huang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Jia Wang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Stem Cell Research Laboratory, Department of Obstetrics and Gynecology, the Affiliated University-Town Hospital, Chongqing Medical University, 401331 Chongqing, China
| | - Junyi Liao
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Ruidong Li
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Xinyi Yu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Chen Zhao
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Zongyue Zeng
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Yi Shu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Ruyi Zhang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Shujuan Yan
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Jiayan Lei
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Chao Yang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Ke Wu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Ying Wu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0001 1431 9176grid.24695.3cDepartment of Immunology and Microbiology, Beijing University of Chinese Medicine, 100029 Beijing, China
| | - Shifeng Huang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Xiaojuan Ji
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Alexander Li
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Cheng Gong
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,grid.413247.7Department of Surgery, the Affiliated Zhongnan Hospital of Wuhan University, 430071 Wuhan, China
| | - Chengfu Yuan
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0001 0033 6389grid.254148.eDepartment of Biochemistry and Molecular Biology, China Three Gorges University School of Medicine, 443002 Yichang, China
| | - Linghuan Zhang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Wei Liu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Bo Huang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China ,grid.412455.3Department of Clinical Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, 330006 Nanchang, China
| | - Yixiao Feng
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Liping An
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0004 1798 9345grid.411294.bKey Laboratory of Orthopaedic Surgery of Gansu Province and the Department of Orthopaedic Surgery, the Second Hospital of Lanzhou University, 730030 Lanzhou, China
| | - Bo Zhang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0004 1798 9345grid.411294.bKey Laboratory of Orthopaedic Surgery of Gansu Province and the Department of Orthopaedic Surgery, the Second Hospital of Lanzhou University, 730030 Lanzhou, China
| | - Zhengyu Dai
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,Department of Orthopaedic Surgery, Chongqing Hospital of Traditional Chinese Medicine, 400021 Chongqing, China
| | - Yi Shen
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0004 1803 0208grid.452708.cDepartment of Orthopaedic Surgery, Xiangya Second Hospital of Central South University, 410011 Changsha, China
| | - Wenping Luo
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Xi Wang
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8653 0555grid.203458.8Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016 Chongqing, China
| | - Ailong Huang
- grid.412461.4Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hue H. Luu
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Russell R. Reid
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA ,0000 0000 8736 9513grid.412578.dDepartment of Surgery, Section of Plastic Surgery, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Jennifer Moriatis Wolf
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Gopal Thinakaran
- 0000 0000 8736 9513grid.412578.dDepartment of Neurobiology, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Michael J. Lee
- 0000 0000 8736 9513grid.412578.dMolecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637 USA
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA. .,Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, 400016, Chongqing, China.
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10
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Kim H, Yoo J, Shin J, Chang Y, Jung J, Jo DG, Kim J, Jang W, Lengner CJ, Kim BS, Kim J. Modelling APOE ɛ3/4 allele-associated sporadic Alzheimer’s disease in an induced neuron. Brain 2017; 140:2193-2209. [DOI: 10.1093/brain/awx144] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 05/07/2017] [Indexed: 01/08/2023] Open
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11
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Geng JJ, Tang J, Yang XM, Chen R, Zhang Y, Zhang K, Miao JL, Chen ZN, Zhu P. Targeting CD147 for T to NK Lineage Reprogramming and Tumor Therapy. EBioMedicine 2017; 20:98-108. [PMID: 28571672 PMCID: PMC5478251 DOI: 10.1016/j.ebiom.2017.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 11/18/2022] Open
Abstract
CD147 is highly expressed on the surface of numerous tumor cells to promote invasion and metastasis. Targeting these cells with CD147-specific antibodies has been validated as an effective approach for lung and liver cancer therapy. In the immune system, CD147 is recognized as a co-stimulatory receptor and impacts the outcome of thymic selection. Using T cell-specific deletion, we showed here that in thymus CD147 is indispensable for the stable αβ T cell lineage commitment: loss of CD147 biases both multipotent DN (double negative) and fully committed DP (double positive) cells into innate NK-like lineages. Mechanistically, CD147 deficiency results in impaired Wnt signaling and expression of BCL11b, a master transcription factor in determining T cell identity. In addition, functional blocking of CD147 by antibody phenocopies genetic deletion to enrich NK-like cells in the periphery. Furthermore, using a melanoma model and orthotopic liver cancer transplants, we showed that the augmentation of NK-like cells strongly associates with resistance against tumor growth upon CD147 suppression. Therefore, besides its original function in tumorigenesis, CD147 is also an effective surface target for immune modulation in tumor therapy. DN, DP cells were reprogrammed into innate NK-like cells after thymic CD147 deleted Loss of CD147 results in impaired Bcl11b expression and T-lineages development, which can be rescued by Wnt3a stimulation. CD147 is an vital target for immune modulation via NK-like cells in tumor therapy.
Tumor therapy is a difficult task and many methods have been used. Among them, tumor immunotherapy is a focus in the field and has made great progress. In this study, we found CD147 is an vital target for immune modulation via NK-like cells in tumor therapy, which means CD147 antibody may be through regulating immune cells to achieve tumor therapy. Although CD147 antibody has been used for liver cancer, making clear the mechanism of CD147 antibody mediated tumor therapy may be benefit for guiding clinical treatment.
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Affiliation(s)
- Jie-Jie Geng
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China; Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Juan Tang
- Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Xiang-Min Yang
- Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Ruo Chen
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China; Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Yang Zhang
- Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Kui Zhang
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Jin-Lin Miao
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China
| | - Zhi-Nan Chen
- Department of Cell Biology, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China.
| | - Ping Zhu
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shan'xi 710032, PR China.
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12
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Cui HY, Wang SJ, Miao JY, Fu ZG, Feng F, Wu J, Yang XM, Chen ZN, Jiang JL. CD147 regulates cancer migration via direct interaction with Annexin A2 and DOCK3-β-catenin-WAVE2 signaling. Oncotarget 2016; 7:5613-29. [PMID: 26716413 PMCID: PMC4868709 DOI: 10.18632/oncotarget.6723] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 12/12/2015] [Indexed: 12/31/2022] Open
Abstract
The acquisition of inappropriate migratory feature is crucial for tumor metastasis. It has been suggested that CD147 and Annexin A2 are involved in regulating tumor cell movement, while the regulatory mechanisms are far from clear. In this study, we demonstrated that CD147 physically interacted with the N-terminal domain of Annexin A2 and decreased Annexin A2 phosphorylation on tyrosine 23. In vitro kinase assay showed that the I domain of CD147 was indispensable for CD147-mediated downregulation of Annexin A2 phosphorylation by Src. Furthermore, we determined that p-Annexin A2 promoted the expression of dedicator of cytokinesis 3 (DOCK3) and DOCK3 blocked β-catenin nuclear translocation, resulting in inhibition of β-catenin signaling. In addition, DOCK3 inhibited lamellipodium dynamics and tumor cell movement. Also, we found that β-catenin signaling increased WAVE2 expression. Therefore, DOCK3 was characterized as a negative regulator of WAVE2 expression via inhibiting β-catenin signaling. Our study provides the first evidence that CD147 promotes tumor cell movement and metastasis via direct interaction with Annexin A2 and DOCK3-β-catenin-WAVE2 signaling axis.
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Affiliation(s)
- Hong-Yong Cui
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Shi-Jie Wang
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Ji-Yu Miao
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Zhi-Guang Fu
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Fei Feng
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Jiao Wu
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Xiang-Min Yang
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Zhi-Nan Chen
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
| | - Jian-Li Jiang
- Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, P.R. China
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13
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Nahálková J. The protein-interaction network with functional roles in tumorigenesis, neurodegeneration, and aging. Mol Cell Biochem 2016; 423:187-196. [DOI: 10.1007/s11010-016-2836-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/23/2016] [Indexed: 01/13/2023]
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14
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Kaushik DK, Hahn JN, Yong VW. EMMPRIN, an upstream regulator of MMPs, in CNS biology. Matrix Biol 2015; 44-46:138-46. [PMID: 25644103 DOI: 10.1016/j.matbio.2015.01.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 01/24/2015] [Accepted: 01/24/2015] [Indexed: 01/24/2023]
Abstract
Matrix metalloproteinases (MMPs) are engaged in pathologies associated with infections, tumors, autoimmune disorders and neurological dysfunctions. With the identification of an upstream regulator of MMPs, EMMPRIN (Extracellular matrix metalloproteinase inducer, CD147), it is relevant to address if EMMPRIN plays a role in the pathology of central nervous system (CNS) diseases. This would enable the possibility of a more upstream and effective therapeutic target. Indeed, conditions including gliomas, Alzheimer's disease (AD), multiple sclerosis (MS), and other insults such as hypoxia/ischemia show elevated levels of EMMPRIN which correlate with MMP production. In contrast, given EMMPRIN's role in CNS homeostasis with respect to regulation of monocarboxylate transporters (MCTs) and interactions with adhesion molecules including integrins, we need to consider that EMMPRIN may also serve important regulatory or protective functions. This review summarizes the current understanding of EMMPRIN's involvement in CNS homeostasis, its possible roles in escalating or reducing neural injury, and the mechanisms of EMMPRIN including and apart from MMP induction.
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Affiliation(s)
| | | | - V Wee Yong
- Hotchkiss Brain Institute, University of Calgary, Calgary, Canada.
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15
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Gertsik N, Chiu D, Li YM. Complex regulation of γ-secretase: from obligatory to modulatory subunits. Front Aging Neurosci 2015; 6:342. [PMID: 25610395 PMCID: PMC4285130 DOI: 10.3389/fnagi.2014.00342] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 12/09/2014] [Indexed: 11/29/2022] Open
Abstract
γ-Secretase is a four subunit, 19-pass transmembrane enzyme that cleaves amyloid precursor protein (APP), catalyzing the formation of amyloid beta (Aβ) peptides that form amyloid plaques, which contribute to Alzheimer’s disease (AD) pathogenesis. γ-Secretase also cleaves Notch, among many other type I transmembrane substrates. Despite its seemingly promiscuous enzymatic capacity, γ-secretase activity is tightly regulated. This regulation is a function of many cellular entities, including but not limited to the essential γ-secretase subunits, nonessential (modulatory) subunits, and γ-secretase substrates. Regulation is also accomplished by an array of cellular events, such as presenilin (active subunit of γ-secretase) endoproteolysis and hypoxia. In this review we discuss how γ-secretase is regulated with the hope that an advanced understanding of these mechanisms will aid in the development of effective therapeutics for γ-secretase-associated diseases like AD and Notch-addicted cancer.
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Affiliation(s)
- Natalya Gertsik
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Biochemistry and Molecular Biology Program, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
| | - Danica Chiu
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Program of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
| | - Yue-Ming Li
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center New York, NY, USA ; Program of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University New York, NY, USA
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16
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Zhang X, Li Y, Xu H, Zhang YW. The γ-secretase complex: from structure to function. Front Cell Neurosci 2014; 8:427. [PMID: 25565961 PMCID: PMC4263104 DOI: 10.3389/fncel.2014.00427] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 11/27/2014] [Indexed: 12/21/2022] Open
Abstract
One of the most critical pathological features of Alzheimer’s disease (AD) is the accumulation of β-amyloid (Aβ) peptides that form extracellular senile plaques in the brain. Aβ is derived from β-amyloid precursor protein (APP) through sequential cleavage by β- and γ-secretases. γ-secretase is a high molecular weight complex minimally composed of four components: presenilins (PS), nicastrin, anterior pharynx defective 1 (APH-1), and presenilin enhancer 2 (PEN-2). In addition to APP, γ-secretase also cleaves many other type I transmembrane (TM) protein substrates. As a crucial enzyme for Aβ production, γ-secretase is an appealing therapeutic target for AD. Here, we summarize current knowledge on the structure and function of γ-secretase, as well as recent progress in developing γ-secretase targeting drugs for AD treatment.
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Affiliation(s)
- Xian Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University Xiamen, FJ, China
| | - Yanfang Li
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University Xiamen, FJ, China
| | - Huaxi Xu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University Xiamen, FJ, China ; Degenerative Disease Research Program, Sanford-Burnham Medical Research Institute La Jolla, CA, USA
| | - Yun-Wu Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, College of Medicine, Xiamen University Xiamen, FJ, China
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17
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Musunuri S, Kultima K, Richard BC, Ingelsson M, Lannfelt L, Bergquist J, Shevchenko G. Micellar extraction possesses a new advantage for the analysis of Alzheimer's disease brain proteome. Anal Bioanal Chem 2014; 407:1041-57. [PMID: 25416231 DOI: 10.1007/s00216-014-8320-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 10/30/2014] [Accepted: 11/03/2014] [Indexed: 12/11/2022]
Abstract
Integral membrane proteins (MPs), such as transporters, receptors, and ion channels, are of great interest because of their participation in various vital cellular functions including cell-cell interactions, ion transport, and signal transduction. However, studies of MPs are complicated because of their hydrophobic nature, heterogeneity, and low abundance. Cloud-point extraction (CPE) with the non-ionic surfactant Triton X-114 was performed to simultaneously extract and phase separate hydrophobic and hydrophilic proteins from Alzheimer's disease (AD) and unaffected control brain tissue. Quantitative proteomics analysis of temporal neocortex samples of AD patients and controls was performed using a shotgun approach based on stable isotope dimethyl labeling (DML) quantification technique followed by nanoLC-MS/MS analysis. A total of 1096 unique proteins were identified and quantified, with 40.3 % (211/524) predicted as integral MPs with at least one transmembrane domain (TMD) found in the detergent phase, and 10 % (80/798) in the detergent-depleted phase. Among these, 62 proteins were shown to be significantly altered (p-value <0.05), in AD versus control samples. In the detergent fraction, we found 10 hydrophobic transmembrane proteins containing up to 14 putative TMDs that were significantly up- or down-regulated in AD compared with control brains. Changes in four of these proteins, alpha-enolase (ENOA), lysosome-associated membrane glycoprotein 1 (LAMP1), 14-3-3 protein gamma (1433G), and sarcoplasmic/endoplasmic reticulum calcium ATPase2 (AT2A2) were validated by immunoblotting. Our results emphasize that separating hydrophobic MPs in CPE contributes to an increased understanding of the underlying molecular mechanisms in AD. Such knowledge can become useful for the development of novel disease biomarkers.
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Affiliation(s)
- Sravani Musunuri
- Analytical Chemistry, Department of Chemistry-BMC, Uppsala University, Uppsala, Sweden
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18
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Liu B, Zhu Y, Zhou J, Wei Y, Long C, Chen M, Ling Y, Ge J, Zhuo Y. Endoplasmic reticulum stress promotes amyloid-beta peptides production in RGC-5 cells. Cell Stress Chaperones 2014; 19:827-35. [PMID: 24643796 PMCID: PMC4389842 DOI: 10.1007/s12192-014-0506-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 02/19/2014] [Accepted: 02/21/2014] [Indexed: 01/05/2023] Open
Abstract
Endoplasmic reticulum (ER) stress has been implicated in various neurodegenerative diseases, including Alzheimer's disease. We have previously observed amyloid production in the retina of the Tg2576 transgenic mouse model of Alzheimer's disease. In this study, we used tunicamycin-induced ER stress in RGC-5 cells, a cell line identical to the photoreceptor cell line 661W, to investigate the effect of ER stress on production of amyloid-beta (Abeta) peptides. We found that the mRNA level of amyloid-beta precursor protein (APP) remained stable, while the protein level of amyloid-beta precursor protein (APP) was decreased, the amyloid-beta precursor protein cleaving enzymes beta-site APP-cleaving enzyme 1 and presenilin 1 were upregulated, Abeta1-40 and Abeta1-42 production were increased, and reactive oxygen species production and apoptosis markers were elevated following induction of ER stress. The protein level of Abeta degradation enzymes, neprilysin, endothelin-converting enzyme 1, and endothelin-converting enzyme 2 remained unchanged during the prolonged ER stress, showing that the generation of Abeta did not result from reduction of proteolysis by these enzymes. Inclusion of group II caspase inhibitor, Z-DEVD-FMK, increased the ER stress mediated Abeta production, suggesting that they are generated by a caspase-independent mechanism. Our findings provided evidence of a role of ER stress in Abeta peptide overproduction and apoptotic pathway activation in RGC-5 cells.
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Affiliation(s)
- Bingqian Liu
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Yingting Zhu
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Jiayi Zhou
- />New England College of Optometry, Boston, MA 02115 USA
| | - Yantao Wei
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Chongde Long
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Mengfei Chen
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Yunlan Ling
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Jian Ge
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
| | - Yehong Zhuo
- />State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060 China
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Kim J, Yoon JH, Kim YS. HIV-1 Tat interacts with and regulates the localization and processing of amyloid precursor protein. PLoS One 2013; 8:e77972. [PMID: 24312169 PMCID: PMC3843664 DOI: 10.1371/journal.pone.0077972] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 09/07/2013] [Indexed: 12/22/2022] Open
Abstract
HIV-1 Tat protein plays various roles in virus proliferation and in the regulation of numerous host cell functions. Accumulating evidence suggests that HIV-1 Tat also plays an important role in HIV-associated neurocognitive disorders (HAND) by disrupting intracellular communication. Amyloid beta (Aβ) is generated from amyloid precursor protein (APP) and accumulates in the senile plaques of Alzheimer's disease patients. This study demonstrates that Tat interacts with APP both in vitro and in vivo, and increases the level of Aβ42 by recruiting APP into lipid rafts. Co-localization of Tat with APP in the cytosol was observed in U-87 MG cells that expressed high levels of Tat, and redistribution of APP into lipid rafts, a site of increased β- and γ-secretase activity, was demonstrated by discontinuous sucrose density gradient ultracentrifugation in the presence of Tat. Furthermore, Tat enhanced the cleavage of APP by β-secretase in vitro, resulting in 5.5-fold higher levels of Aβ42. This was consistent with increased levels of β-C-terminal fragment (β-CTF) and reduced levels of α-CTF. Moreover, stereotaxic injection of a lentiviral Tat expression construct into the hippocampus of APP/presenilin-1 (PS1) transgenic mice resulted in increased Tat-mediated production and processing of Aβ in vivo. Increased levels of Aβ42, as well as an increase in the number and size of Aβ plaques, were observed in the hippocampus following injection of Tat virus compared with mock virus. These results suggest that HIV-1 Tat may contribute to HAND by interacting with and modifying APP processing, thereby increasing Aβ production.
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Affiliation(s)
- Jiyoung Kim
- Indang Institute of Molecular Biology, Inje University, Jung-Gu, Seoul, Republic of Korea
| | - Jee-Hyun Yoon
- Department of Smart Foods and Drugs, Inje University, Jung-Gu, Seoul, Republic of Korea
| | - Yeon-Soo Kim
- Indang Institute of Molecular Biology, Inje University, Jung-Gu, Seoul, Republic of Korea
- Department of Smart Foods and Drugs, Inje University, Jung-Gu, Seoul, Republic of Korea
- * E-mail:
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Saido T, Leissring MA. Proteolytic degradation of amyloid β-protein. Cold Spring Harb Perspect Med 2013; 2:a006379. [PMID: 22675659 DOI: 10.1101/cshperspect.a006379] [Citation(s) in RCA: 253] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The amyloid β-protein (Aβ) is subject to proteolytic degradation by a diverse array of peptidases and proteinases, known collectively as Aβ-degrading proteases (AβDPs). A growing number of AβDPs have been identified, which, under physiological and/or pathophysiological conditions, contribute significantly to the determination of endogenous cerebral Aβ levels. Despite more than a decade of investigation, the complete set of AβDPs remains to be established, and our understanding of even well-established AβDPs is incomplete. Nevertheless, the study of known AβDPs has contributed importantly to our understanding of the molecular pathogenesis of Alzheimer disease (AD) and has inspired the development of several novel therapeutic approaches to the regulation of cerebral Aβ levels. In this article, we discuss the general features of Aβ degradation and introduce the best-characterized AβDPs, focusing on their diverse properties and the numerous conceptual insights that have emerged from the study of each.
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Affiliation(s)
- Takaomi Saido
- Riken Brain Science Institute, Saitamo 351-0198, Japan
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Crump CJ, Johnson DS, Li YM. Development and mechanism of γ-secretase modulators for Alzheimer's disease. Biochemistry 2013; 52:3197-216. [PMID: 23614767 DOI: 10.1021/bi400377p] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
γ-Secretase is an aspartyl intramembranal protease composed of presenilin, Nicastrin, Aph1, and Pen2 with 19 transmembrane domains. γ-Secretase cleaves the amyloid precursor proteins (APP) to release Aβ peptides that likely play a causative role in the pathogenesis of Alzheimer's disease (AD). In addition, γ-secretase cleaves Notch and other type I membrane proteins. γ-Secretase inhibitors (GSIs) have been developed and used for clinical studies. However, clinical trials have shown adverse effects of GSIs that are potentially linked with nondiscriminatory inhibition of Notch signaling, overall APP processing, and other substrate cleavages. Therefore, these findings call for the development of disease-modifying agents that target γ-secretase activity to lower levels of Aβ42 production without blocking the overall processing of γ-secretase substrates. γ-Secretase modulators (GSMs) originally derived from nonsteroidal anti-inflammatory drugs (NSAIDs) display such characteristics and are the focus of this review. However, first-generation GSMs have limited potential because of the low potency and undesired neuropharmacokinetic properties. This generation of GSMs has been suggested to interact with the APP substrate, γ-secretase, or both. To improve the potency and brain availability, second-generation GSMs, including NSAID-derived carboxylic acid and non-NSAID-derived heterocyclic chemotypes, as well as natural product-derived GSMs have been developed. Animal studies of this generation of GSMs have shown encouraging preclinical profiles. Moreover, using potent GSM photoaffinity probes, multiple studies unambiguously have showed that both carboxylic acid and heterocyclic GSMs specifically target presenilin, the catalytic subunit of γ-secretase. In addition, two types of GSMs have distinct binding sites within the γ-secretase complex and exhibit different Aβ profiles. GSMs induce a conformational change of γ-secretase to achieve modulation. Various models are proposed and discussed. Despite the progress of GSM research, many outstanding issues remain to be investigated to achieve the ultimate goal of developing GSMs as effective AD therapies.
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Affiliation(s)
- Christina J Crump
- Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center , 1275 York Avenue, New York, New York 10065, United States
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22
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Jeon AHW, Böhm C, Chen F, Huo H, Ruan X, Ren CH, Ho K, Qamar S, Mathews PM, Fraser PE, Mount HTJ, St George-Hyslop P, Schmitt-Ulms G. Interactome analyses of mature γ-secretase complexes reveal distinct molecular environments of presenilin (PS) paralogs and preferential binding of signal peptide peptidase to PS2. J Biol Chem 2013; 288:15352-66. [PMID: 23589300 PMCID: PMC3663554 DOI: 10.1074/jbc.m112.441840] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
γ-Secretase plays a pivotal role in the production of neurotoxic amyloid β-peptides (Aβ) in Alzheimer disease (AD) and consists of a heterotetrameric core complex that includes the aspartyl intramembrane protease presenilin (PS). The human genome codes for two presenilin paralogs. To understand the causes for distinct phenotypes of PS paralog-deficient mice and elucidate whether PS mutations associated with early-onset AD affect the molecular environment of mature γ-secretase complexes, quantitative interactome comparisons were undertaken. Brains of mice engineered to express wild-type or mutant PS1, or HEK293 cells stably expressing PS paralogs with N-terminal tandem-affinity purification tags served as biological source materials. The analyses revealed novel interactions of the γ-secretase core complex with a molecular machinery that targets and fuses synaptic vesicles to cellular membranes and with the H+-transporting lysosomal ATPase macrocomplex but uncovered no differences in the interactomes of wild-type and mutant PS1. The catenin/cadherin network was almost exclusively found associated with PS1. Another intramembrane protease, signal peptide peptidase, predominantly co-purified with PS2-containing γ-secretase complexes and was observed to influence Aβ production.
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Affiliation(s)
- Amy Hye Won Jeon
- Department of Laboratory Medicine and Pathobiology, Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Ontario M5S3H2, Canada
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Barrett PJ, Chen J, Cho MK, Kim JH, Lu Z, Mathew S, Peng D, Song Y, Van Horn WD, Zhuang T, Sönnichsen FD, Sanders CR. The quiet renaissance of protein nuclear magnetic resonance. Biochemistry 2013; 52:1303-20. [PMID: 23368985 DOI: 10.1021/bi4000436] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
From roughly 1985 through the start of the new millennium, the cutting edge of solution protein nuclear magnetic resonance (NMR) spectroscopy was to a significant extent driven by the aspiration to determine structures. Here we survey recent advances in protein NMR that herald a renaissance in which a number of its most important applications reflect the broad problem-solving capability displayed by this method during its classical era during the 1970s and early 1980s.
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Affiliation(s)
- Paul J Barrett
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University, Nashville, Tennessee 37232-8725, United States
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Bien J, Jefferson T, Causević M, Jumpertz T, Munter L, Multhaup G, Weggen S, Becker-Pauly C, Pietrzik CU. The metalloprotease meprin β generates amino terminal-truncated amyloid β peptide species. J Biol Chem 2012; 287:33304-13. [PMID: 22879596 DOI: 10.1074/jbc.m112.395608] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The amyloid β (Aβ) peptide, which is abundantly found in the brains of patients suffering from Alzheimer disease, is central in the pathogenesis of this disease. Therefore, to understand the processing of the amyloid precursor protein (APP) is of critical importance. Recently, we demonstrated that the metalloprotease meprin β cleaves APP and liberates soluble N-terminal APP (N-APP) fragments. In this work, we present evidence that meprin β can also process APP in a manner reminiscent of β-secretase. We identified cleavage sites of meprin β in the amyloid β sequence of the wild type and Swedish mutant of APP at positions p1 and p2, thereby generating Aβ variants starting at the first or second amino acid residue. We observed even higher kinetic values for meprin β than BACE1 for both the wild type and the Swedish mutant APP form. This enzymatic activity of meprin β on APP and Aβ generation was also observed in the absence of BACE1/2 activity using a β-secretase inhibitor and BACE knock-out cells, indicating that meprin β acts independently of β-secretase.
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Affiliation(s)
- Jessica Bien
- Institute of Pathobiochemistry, University Medical Centre of the Johannes Gutenberg University of Mainz, 55128 Mainz, Germany
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25
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Novel GαS-protein signaling associated with membrane-tethered amyloid precursor protein intracellular domain. J Neurosci 2012; 32:1714-29. [PMID: 22302812 DOI: 10.1523/jneurosci.5433-11.2012] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Numerous physiological functions, including a role as a cell surface receptor, have been ascribed to Alzheimer's disease-associated amyloid precursor protein (APP). However, detailed analysis of intracellular signaling mediated by APP in neurons has been lacking. Here, we characterized intrinsic signaling associated with membrane-bound APP C-terminal fragments, which are generated following APP ectodomain release by α- or β-secretase cleavage. We found that accumulation of APP C-terminal fragments or expression of membrane-tethered APP intracellular domain results in adenylate cyclase-dependent activation of PKA (protein kinase A) and inhibition of GSK3β signaling cascades, and enhancement of axodendritic arborization in rat immortalized hippocampal neurons, mouse primary cortical neurons, and mouse neuroblastoma. We discovered an interaction between BBXXB motif of APP intracellular domain and the heterotrimeric G-protein subunit Gα(S), and demonstrate that Gα(S) coupling to adenylate cyclase mediates membrane-tethered APP intracellular domain-induced neurite outgrowth. Our study provides clear evidence that APP intracellular domain can have a nontranscriptional role in regulating neurite outgrowth through its membrane association. The novel functional coupling of membrane-bound APP C-terminal fragments with Gα(S) signaling identified in this study could impact several brain functions such as synaptic plasticity and memory formation.
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26
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Zhuang T, Jap BK, Sanders CR. Solution NMR approaches for establishing specificity of weak heterodimerization of membrane proteins. J Am Chem Soc 2011; 133:20571-80. [PMID: 22084929 DOI: 10.1021/ja208972h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Solution NMR provides a powerful approach for detecting complex formation involving weak to moderate intermolecular affinity. However, solution NMR has only rarely been used to detect complex formation between two membrane proteins in model membranes. The impact of specific binding on the NMR spectrum of a membrane protein can be difficult to distinguish from spectral changes that are induced by nonspecific binding and/or by changes that arise from forced cohabitation of the two proteins in a single model membrane assembly. This is particularly the case when solubility limits make it impossible to complete a titration to the point of near saturation of complex formation. In this work experiments are presented that provide the basis for establishing whether specific complex formation occurs between two membrane proteins under conditions where binding is not of high avidity. Application of these methods led to the conclusion that the membrane protein CD147 (also known as EMMPRIN or basigin) forms a specific heterodimeric complex in the membrane with the 99-residue transmembrane C-terminal fragment of the amyloid precursor protein (C99 or APP-βCTF), the latter being the immediate precursor of the amyloid-β polypeptides that are closely linked to the etiology of Alzheimer's disease.
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Affiliation(s)
- Tiandi Zhuang
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA
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27
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Teranishi Y, Hur JY, Welander H, Frånberg J, Aoki M, Winblad B, Frykman S, Tjernberg LO. Affinity pulldown of γ-secretase and associated proteins from human and rat brain. J Cell Mol Med 2011; 14:2675-86. [PMID: 19754663 PMCID: PMC4373488 DOI: 10.1111/j.1582-4934.2009.00907.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
γ-Secretase is a transmembrane protease complex responsible for the processing of a multitude of type 1 transmembrane proteins, including amyloid precursor protein (APP) and Notch. A functional complex is dependent on the assembly of four proteins: presenilin (PS), nicastrin, Aph-1 and Pen-2. Little is known about how the substrates are selected by γ-secretase, but it has been suggested that γ-secretase associated proteins (GSAPs) could be of importance. For instance, it was recently reported from studies in cell lines that TMP21, a transmembrane protein involved in trafficking, binds to γ-secretase and regulates the processing of APP-derived substrates without affecting Notch cleavage. Here, we present an efficient and selective method for purification and analysis of γ-secretase and GSAPs. Microsomal membranes were prepared from rat or human brain and incubated with a γ-secretase inhibitor coupled to biotin via a long linker and a S-S bridge. After pulldown using streptavidin beads, bound proteins were eluted under reducing conditions and digested by trypsin. The tryptic peptides were subjected to LC-MS/MS analysis, and proteins were identified by sequence data from MS/MS spectra. All of the known γ-secretase components were identified. Interestingly, TMP21 and the PS associated protein syntaxin1 were associated to γ-secretase in rat brain. We suggest that the present method can be used for further studies on the composition of the γ-secretase complex.
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Affiliation(s)
- Yasuhiro Teranishi
- The Karolinska Institutet (KI) Dainippon Sumitomo Pharma Alzheimer Center (KASPAC), KI-Alzheimer's Disease Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Novum, Huddinge, Sweden
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Yurchenko V, Constant S, Eisenmesser E, Bukrinsky M. Cyclophilin-CD147 interactions: a new target for anti-inflammatory therapeutics. Clin Exp Immunol 2010; 160:305-17. [PMID: 20345978 PMCID: PMC2883100 DOI: 10.1111/j.1365-2249.2010.04115.x] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2010] [Indexed: 12/03/2022] Open
Abstract
CD147 is a widely expressed plasma membrane protein that has been implicated in a variety of physiological and pathological activities. It is best known for its ability to function as extracellular matrix metalloproteinase inducer (hence the other name for this protein, EMMPRIN), but has also been shown to regulate lymphocyte responsiveness, monocarboxylate transporter expression and spermatogenesis. These functions reflect multiple interacting partners of CD147. Among these CD147-interacting proteins cyclophilins represent a particularly interesting class, both in terms of structural considerations and potential medical implications. CD147 has been shown to function as a signalling receptor for extracellular cyclophilins A and B and to mediate chemotactic activity of cyclophilins towards a variety of immune cells. Recent studies using in vitro and in vivo models have demonstrated a role for cyclophilin-CD147 interactions in the regulation of inflammatory responses in a number of diseases, including acute lung inflammation, rheumatoid arthritis and cardiovascular disease. Agents targeting either CD147 or cyclophilin activity showed significant anti-inflammatory effects in experimental models, suggesting CD147-cyclophilin interactions may be a good target for new anti-inflammatory therapeutics. Here, we review the recent literature on different aspects of cyclophilin-CD147 interactions and their role in inflammatory diseases.
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Chiang PM, Fortna RR, Price DL, Li T, Wong PC. Specific domains in anterior pharynx-defective 1 determine its intramembrane interactions with nicastrin and presenilin. Neurobiol Aging 2010; 33:277-85. [PMID: 20382452 DOI: 10.1016/j.neurobiolaging.2009.12.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 12/02/2009] [Accepted: 12/11/2009] [Indexed: 01/13/2023]
Abstract
γ-Secretase, a multisubunit transmembrane protease comprised of presenilin, nicastrin, presenilin enhancer 2, and anterior pharynx-defective one, participates in the regulated intramembrane proteolysis of Type I membrane proteins including the amyloid precursor protein (APP). Although Aph-1 is thought to play a structural role in the assembly of γ-secretase complex and several transmembrane domains (TMDs) of Aph-1 have been shown to be critical for its function, the importance of the other domains of Aph-1 remains elusive. We screened a series of Aph-1 mutants and focused on nine mutations distributed in six different TMDs of human APH-1aS, assessing their ability to complement mouse embryonic fibroblasts lacking Aph-1. We showed that mutations in TMD4 (G126) and TMD5 (H171) of Aph-1aS prevented the formation of the Nct/Aph-1 subcomplex. Importantly, although mutations in TMD3 (Q83/E84/R85) and TMD6 (H197) of APH-1aS did not affect Nct/Aph-1 subcomplex formation, both mutations prevented further association/endoproteolysis of PS1. We propose a model that identifies critical TMDs of Aph-1 for associations with Nct and PS for the stepwise assembly of γ-secretase components.
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Affiliation(s)
- Po-Min Chiang
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205-2196, USA
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30
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Mitsuishi Y, Hasegawa H, Matsuo A, Araki W, Suzuki T, Tagami S, Okochi M, Takeda M, Roepman R, Nishimura M. Human CRB2 inhibits gamma-secretase cleavage of amyloid precursor protein by binding to the presenilin complex. J Biol Chem 2010; 285:14920-14931. [PMID: 20299451 DOI: 10.1074/jbc.m109.038760] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Drosophila Crumbs has been reported to attenuate Notch signaling by inhibition of gamma-secretase cleavage at the wing margins. gamma-Secretase is an intramembrane protease that is responsible for the generation of amyloid-beta (Abeta) peptides from the beta-amyloid precursor protein (APP). Here, we re-examined gamma-secretase inhibition by human CRB2, which is the most abundant Crumbs ortholog in the brain. Transfected CRB2 inhibited proteolytic production of Abeta and APP intracellular domains from APP C-terminal fragments in HEK293 and SH-SY5Y cells. Conversely, knockdown of endogenous CRB2 increased gamma-secretase cleavage products in SH-SY5Y cells. CRB2 inhibition of gamma-cleavage was also detected in cell-free assays. CRB2 interacted with the gamma-secretase complex, but was not a competitive substrate for gamma-cleavage. The transmembrane domain of CRB2 was indispensable for inhibition of Abeta generation and mediated CRB2 binding with the gamma-secretase complex. In addition, the cytoplasmic domain appeared to play a supportive role in gamma-secretase inhibition, whereas mutational disruption of the two protein-binding motifs involved in the formation of cell adhesion complexes did not affect gamma-secretase inhibition. Co-overexpression of presenilin-1 or APH-1 abrogated gamma-secretase inhibition probably through prevention of the incorporation of CRB2 into the gamma-secretase complex. Our results suggest that CRB2 functions as an inhibitory binding protein that is involved in the formation of a mature but inactive pool of the gamma-secretase complex.
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Affiliation(s)
- Yachiyo Mitsuishi
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Hiroshi Hasegawa
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Akinori Matsuo
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Wataru Araki
- Department of Demyelinating Disease and Aging, National Institute of Neuroscience, NCNP, Tokyo 187-8502, Japan
| | - Toshiharu Suzuki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Hokkaido 060-0812, Japan
| | - Shinji Tagami
- Department of Post-Genomics and Diseases, Division of Psychiatry and Behavioral Proteomics, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
| | - Masayasu Okochi
- Department of Post-Genomics and Diseases, Division of Psychiatry and Behavioral Proteomics, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
| | - Masatoshi Takeda
- Department of Post-Genomics and Diseases, Division of Psychiatry and Behavioral Proteomics, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
| | - Ronald Roepman
- Department of Human Genetics, Radboud University Nijmegen Medical Centre, Nijmegen 6500 HB, The Netherlands
| | - Masaki Nishimura
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga 520-2192, Japan.
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31
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Hanger DP, Seereeram A, Noble W. Mediators of tau phosphorylation in the pathogenesis of Alzheimer's disease. Expert Rev Neurother 2010; 9:1647-66. [PMID: 19903024 DOI: 10.1586/ern.09.104] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The need for disease-modifying drugs for Alzheimer's disease has become increasingly important owing to escalating disease prevalence and the associated socio-economic burden. Until recently, reducing brain amyloid accumulation has been the main therapeutic focus; however, increasing evidence suggests that targeting abnormal tau phosphorylation could be beneficial. Tau is phosphorylated by several protein kinases and this is balanced by dephosphorylation by protein phosphatases. Phosphorylation at specific sites can influence the physiological functions of tau, including its role in binding to and stabilizing the neuronal cytoskeleton. aberrant phosphorylation of tau could render it susceptible to potentially pathogenic alterations, including conformational changes, proteolytic cleavage and aggregation. While strategies that reduce tau phosphorylation in transgenic models of disease have been promising, our understanding of the mechanisms through which tau becomes abnormally phosphorylated in disease is lacking.
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Affiliation(s)
- Diane P Hanger
- MRC Centre for Neurodegeneration Research, King's College London, Institute of Psychiatry, Department of Neuroscience (P037), De Crespigny Park, London SE5 8AF, UK.
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Krishnaswamy S, Verdile G, Groth D, Kanyenda L, Martins RN. The structure and function of Alzheimer’s gamma secretase enzyme complex. Crit Rev Clin Lab Sci 2009; 46:282-301. [DOI: 10.3109/10408360903335821] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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33
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CD147, a gamma-secretase associated protein is upregulated in Alzheimer's disease brain and its cellular trafficking is affected by presenilin-2. Neurochem Int 2009; 56:67-76. [PMID: 19751784 DOI: 10.1016/j.neuint.2009.09.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2009] [Revised: 09/07/2009] [Accepted: 09/09/2009] [Indexed: 11/20/2022]
Abstract
Gamma-secretase activity has been extensively investigated due to its role in Alzheimer's disease. Here, we studied the association of CD147, a transmembrane glycoprotein belonging to the immunoglobulin family, with gamma-secretase and its expression in Alzheimer's disease and control tissues. Subcellular fractionation of postmitochondrial supernatant from rat brain on step iodixanol gradient in combination with co-immunoprecipitation using an anti-nicastrin antibody showed association of limited amount of CD147 to gamma-secretase. By immunoblotting of postnuclear pellets from Alzheimer's disease and control human brain tissues we showed that CD147 with molecular weight 75 kDa is upregulated in frontal cortex and thalamus of the Alzheimer's disease brains. Immunohistochemistry of brain tissues from Alzheimer's disease and control revealed specific upregulation of CD147 in neurons, axons and capillaries of Alzheimer's disease frontal cortex and thalamus. The effect of presenilin-1 and -2, which are the catalytic subunits of gamma-secretase, on CD147 expression and subcellular localization was analyzed by confocal microscopy in combination with flow cytometry and showed that PS2 affected the subcellular localization of CD147 in mouse embryonic fibroblast cells. We suggest that a small fraction of CD147 present in the brain is associated with the gamma-secretase, and can be involved in mechanisms dysregulated in Alzheimer's disease brain.
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34
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Winkler E, Hobson S, Fukumori A, Dümpelfeld B, Luebbers T, Baumann K, Haass C, Hopf C, Steiner H. Purification, pharmacological modulation, and biochemical characterization of interactors of endogenous human gamma-secretase. Biochemistry 2009; 48:1183-97. [PMID: 19159235 DOI: 10.1021/bi801204g] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Gamma-secretase is a unique intramembrane-cleaving protease complex, which cleaves the Alzheimer's disease-associated beta-amyloid precursor protein (APP) and a number of other type I membrane proteins. Human gamma-secretase consists of the catalytic subunit presenilin (PS) (PS1 or PS2), the substrate receptor nicastrin, APH-1 (APH-1a or APH-1b), and PEN-2. To facilitate in-depth biochemical analysis of gamma-secretase, we developed a fast and convenient multistep purification procedure for the endogenous enzyme. The enzyme was purified from HEK293 cells in an active form and had a molecular mass of approximately 500 kDa. Purified gamma-secretase was capable of producing the major amyloid-beta peptide (Abeta) species, such as Abeta40 and Abeta42, from a recombinant APP substrate in physiological ratios. Abeta generation could be modulated by pharmacological gamma-secretase modulators. Moreover, the Abeta42/Abeta40 ratio was strongly increased by purified PS1 L166P, an aggressive familial Alzheimer's disease mutant. Tandem mass spectrometry analysis revealed the consistent coisolation of several proteins with the known gamma-secretase core subunits. Among these were the previously described gamma-secretase interactors CD147 and TMP21 as well as other known interactors of these. Interestingly, the Niemann-Pick type C1 protein, a cholesterol transporter previously implicated in gamma-secretase-mediated processing of APP, was identified as a major copurifying protein. Affinity capture experiments using a biotinylated transition-state analogue inhibitor of gamma-secretase showed that these proteins are absent from active gamma-secretase complexes. Taken together, we provide an effective procedure for isolating endogenous gamma-secretase in considerably high grade, thus aiding further characterization of this pivotal enzyme. In addition, we provide evidence that the copurifying proteins identified are unlikely to be part of the active gamma-secretase enzyme.
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Affiliation(s)
- Edith Winkler
- Center for Integrated Protein Science Munich and Adolf-Butenandt-Institute, Department of Biochemistry, Laboratory for Neurodegenerative Disease Research, Ludwig-Maximilians-University, 80336 Munich, Germany
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35
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Placanica L, Tarassishin L, Yang G, Peethumnongsin E, Kim SH, Zheng H, Sisodia SS, Li YM. Pen2 and presenilin-1 modulate the dynamic equilibrium of presenilin-1 and presenilin-2 gamma-secretase complexes. J Biol Chem 2008; 284:2967-2977. [PMID: 19036728 DOI: 10.1074/jbc.m807269200] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
gamma-Secretase is known to play a pivotal role in the pathogenesis of Alzheimer disease through production of amyloidogenic Abeta42 peptides. Early onset familial Alzheimer disease mutations in presenilin (PS), the catalytic core of gamma-secretase, invariably increase the Abeta42:Abeta40 ratio. However, the mechanism by which these mutations affect gamma-secretase complex formation and cleavage specificity is poorly understood. We show that our in vitro assay system recapitulates the effect of PS1 mutations on the Abeta42:Abeta40 ratio observed in cell and animal models. We have developed a series of small molecule affinity probes that allow us to characterize active gamma-secretase complexes. Furthermore we reveal that the equilibrium of PS1- and PS2-containing active complexes is dynamic and altered by overexpression of Pen2 or PS1 mutants and that formation of PS2 complexes is positively correlated with increased Abeta42:Abeta40 ratios. These data suggest that perturbations to gamma-secretase complex equilibrium can have a profound effect on enzyme activity and that increased PS2 complexes along with mutated PS1 complexes contribute to an increased Abeta42:Abeta40 ratio.
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Affiliation(s)
- Lisa Placanica
- Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065; Department of Pharmacology, Weill Graduate School of Medical Science of Cornell University, New York, New York 10065
| | - Leonid Tarassishin
- Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Guangli Yang
- Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Erica Peethumnongsin
- Huffington Center on Aging, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030
| | - Seong-Hun Kim
- The Center for Molecular Neurobiology, The University of Chicago, Chicago, Illinois 60637
| | - Hui Zheng
- Huffington Center on Aging, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030
| | - Sangram S Sisodia
- The Center for Molecular Neurobiology, The University of Chicago, Chicago, Illinois 60637
| | - Yue-Ming Li
- Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065; Department of Pharmacology, Weill Graduate School of Medical Science of Cornell University, New York, New York 10065.
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Costa R, Ferreira-da-Silva F, Saraiva MJ, Cardoso I. Transthyretin protects against A-beta peptide toxicity by proteolytic cleavage of the peptide: a mechanism sensitive to the Kunitz protease inhibitor. PLoS One 2008; 3:e2899. [PMID: 18682830 PMCID: PMC2483353 DOI: 10.1371/journal.pone.0002899] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2008] [Accepted: 07/14/2008] [Indexed: 01/26/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the deposition of amyloid beta-peptide (A-Beta) in the brain. Transthyretin (TTR) is a tetrameric protein of about 55 kDa mainly produced in the liver and choroid plexus of the brain. The known physiological functions of TTR are the transport of thyroid hormone T(4) and retinol, through binding to the retinol binding protein. TTR has also been established as a cryptic protease able to cleave ApoA-I in vitro. It has been described that TTR is involved in preventing A-Beta fibrilization, both by inhibiting and disrupting A-Beta fibrils, with consequent abrogation of toxicity. We further characterized the nature of the TTR/A-Beta interaction and found that TTR, both recombinant or isolated from human sera, was able to proteolytically process A-Beta, cleaving the peptide after aminoacid residues 1, 2, 3, 10, 13, 14,16, 19 and 27, as determined by mass spectrometry, and reversed phase chromatography followed by N-terminal sequencing. A-Beta peptides (1-14) and (15-42) showed lower amyloidogenic potential than the full length counterpart, as assessed by thioflavin binding assay and ultrastructural analysis by transmission electron microscopy. A-Beta cleavage by TTR was inhibited in the presence of an alphaAPP peptide containing the Kunitz Protease Inhibitor (KPI) domain but not in the presence of the secreted alphaAPP derived from the APP isoform 695 without the KPI domain. TTR was also able to degrade aggregated forms of A-Beta peptide. Our results confirmed TTR as a protective molecule in AD, and prompted A-Beta proteolysis by TTR as a protective mechanism in this disease. TTR may prove to be a useful therapeutic agent for preventing or retarding the cerebral amyloid plaque formation implicated in AD pathology.
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Affiliation(s)
- Rita Costa
- Molecular Neurobiology, IBMC (Instituto de Biologia Molecular e Celular), Porto, Portugal
| | | | - Maria J. Saraiva
- Molecular Neurobiology, IBMC (Instituto de Biologia Molecular e Celular), Porto, Portugal
- ICBAS, University of Porto, Porto, Portugal
| | - Isabel Cardoso
- Molecular Neurobiology, IBMC (Instituto de Biologia Molecular e Celular), Porto, Portugal
- * E-mail:
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Abstract
Gamma-secretase mediates the final proteolytic cleavage, which liberates amyloid beta-peptide (Abeta), the major component of senile plaques in the brains of Alzheimer disease patients. Therefore, gamma-secretase is a prime target for Abeta-lowering therapeutic strategies. gamma-Secretase is a protein complex composed of four different subunits, presenilin (PS), APH-1, nicastrin, and PEN-2, which are most likely present in a 1:1:1:1 stoichiometry. PS harbors the catalytically active site, which is critically required for the aspartyl protease activity of gamma-secretase. Moreover, numerous familial Alzheimer disease-associated mutations within the PSs increase the production of the aggregation-prone and neurotoxic 42-amino acid Abeta. Nicastrin may serve as a substrate receptor, although this has recently been challenged. PEN-2 is required to stabilize PS within the gamma-secretase complex. No particular function has so far been assigned to APH-1. The four components are sufficient and required for gamma-secretase activity. At least six different gamma-secretase complexes exist that are composed of different variants of PS and APH-1. All gamma-secretase complexes can exert pathological Abeta production. Assembly of the gamma-secretase complex occurs within the endoplasmic reticulum, and only fully assembled and functional gamma-secretase complexes are transported to the plasma membrane. Structural analysis by electron microscopy and chemical cross-linking reveals a water-containing cavity, which allows intramembrane proteolysis. Specific and highly sensitive gamma-secretase inhibitors have been developed; however, they interfere with the physiological function of gamma-secretase in Notch signaling and thus cause rather significant side effects in human trials. Modulators of gamma-secretase, which selectively affect the production of the pathological 42-amino acid Abeta, do not inhibit Notch signaling.
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Affiliation(s)
- Harald Steiner
- Center for Integrated Protein Science Munich and Adolf Butenandt Institute, Department of Biochemistry, Laboratory for Neurodegenerative Disease Research, Ludwig Maximilians University, 80336 Munich, Germany.
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