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Ramakrishnan P. O-GlcNAcylation and immune cell signaling: A review of known and a preview of unknown. J Biol Chem 2024; 300:107349. [PMID: 38718861 PMCID: PMC11180344 DOI: 10.1016/j.jbc.2024.107349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/25/2024] [Accepted: 04/27/2024] [Indexed: 06/06/2024] Open
Abstract
The dynamic and reversible modification of nuclear and cytoplasmic proteins by O-GlcNAcylation significantly impacts the function and dysfunction of the immune system. O-GlcNAcylation plays crucial roles under both physiological and pathological conditions in the biochemical regulation of all immune cell functions. Three and a half decades of knowledge acquired in this field is merely sufficient to perceive that what we know is just the prelude. This review attempts to mark out the known regulatory roles of O-GlcNAcylation in key signal transduction pathways and specific protein functions in the immune system and adumbrate ensuing questions toward the unknown functions.
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Affiliation(s)
- Parameswaran Ramakrishnan
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA; The Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio, USA; Department of Biochemistry, Case Western Reserve University, Cleveland, Ohio, USA; University Hospitals-Cleveland Medical Center, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA.
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2
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Weber P, Bojarová P, Brouzdová J, Křen V, Kulik N, Stütz AE, Thonhofer M, Wrodnigg TM. Diaminocyclopentane - l-Lysine Adducts: Potent and selective inhibitors of human O-GlcNAcase. Bioorg Chem 2024; 148:107452. [PMID: 38763001 DOI: 10.1016/j.bioorg.2024.107452] [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: 04/18/2024] [Accepted: 05/11/2024] [Indexed: 05/21/2024]
Abstract
A new class of compounds, namely highly substituted diaminocyclopentane-l-lysine adducts, have been discovered as potent inhibitors of O-GlcNAcase, an enzyme crucial for protein de-O-glycosylation. These inhibitors exhibit exceptional selectivity and reversibility and are the first example of human O-GlcNAcase inhibitors that are structurally related to the transition state of the rate-limiting step with the "aglycon" still in bond-length proximity. The ease of their preparation, remarkable biological activities, stability, and non-toxicity make them promising candidates for the development of anti-tau-phosphorylation agents holding significant potential for the treatment of Alzheimer's disease.
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Affiliation(s)
- Patrick Weber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Pavla Bojarová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14220 Prague 4, Czech Republic
| | - Jitka Brouzdová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14220 Prague 4, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14220 Prague 4, Czech Republic
| | - Natalia Kulik
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14220 Prague 4, Czech Republic
| | - Arnold E Stütz
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Martin Thonhofer
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Tanja M Wrodnigg
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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3
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Dunning EE, Decourt B, Zawia NH, Shill HA, Sabbagh MN. Pharmacotherapies for the Treatment of Progressive Supranuclear Palsy: A Narrative Review. Neurol Ther 2024:10.1007/s40120-024-00614-9. [PMID: 38743312 DOI: 10.1007/s40120-024-00614-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 03/26/2024] [Indexed: 05/16/2024] Open
Abstract
Progressive supranuclear palsy (PSP) is a neurodegenerative disorder resulting from the deposition of misfolded and neurotoxic forms of tau protein in specific areas of the midbrain, basal ganglia, and cortex. It is one of the most representative forms of tauopathy. PSP presents in several different phenotypic variations and is often accompanied by the development of concurrent neurodegenerative disorders. PSP is universally fatal, and effective disease-modifying therapies for PSP have not yet been identified. Several tau-targeting treatment modalities, including vaccines, monoclonal antibodies, and microtubule-stabilizing agents, have been investigated and have had no efficacy. The need to treat PSP and other tauopathies is critical, and many clinical trials investigating tau-targeted treatments are underway. In this review, the PubMed database was queried to collect information about preclinical and clinical research on PSP treatment. Additionally, the US National Library of Medicine's ClinicalTrials.gov website was queried to identify past and ongoing clinical trials relevant to PSP treatment. This narrative review summarizes our findings regarding these reports, which include potential disease-modifying drug trials, modifiable risk factor management, and symptom treatments.
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Affiliation(s)
- Elise E Dunning
- Creighton University School of Medicine - Phoenix, Phoenix, AZ, USA
| | - Boris Decourt
- Department of Pharmacology and Neuroscience School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Laboratory on Neurodegeneration and Translational Research, College of Medicine, Roseman University of Health Sciences, Las Vegas, NV, USA
| | - Nasser H Zawia
- Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, Qatar
- Department of Biomedical and Pharmaceutical Sciences, Interdisciplinary Neuroscience Program, University of Rhode Island, Kingston, RI, USA
| | - Holly A Shill
- Department of Neurology, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, 350 W Thomas Rd, Phoenix, AZ, 85013, USA
| | - Marwan N Sabbagh
- Department of Neurology, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, 350 W Thomas Rd, Phoenix, AZ, 85013, USA.
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4
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Gamage K, Wang B, Hard ER, Van T, Galesic A, Phillips GR, Pratt M, Lapidus LJ. Post-translational Modification of α-Synuclein Modifies Monomer Dynamics and Aggregation Kinetics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.06.592473. [PMID: 38766253 PMCID: PMC11100617 DOI: 10.1101/2024.05.06.592473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
The intrinsically disordered protein α-Synuclein is identified as a major toxic aggregate in Parkinson's as well as several other neurodegenerative diseases. Recent work on this protein has focused on the effects of posttranslational modifications on aggregation kinetics. Among these, O-GlcNAcylation of α-Synuclein has been observed to inhibit the aggregation propensity of the protein. Here we investigate the monomer dynamics of two O-GlcNAcylated α-Synucleins, α-Syn(gT72) and α-Syn(gS87) and correlate them with the aggregation kinetics. We find that, compared to the unmodified protein, glycosylation at T72 makes the protein less compact and more diffusive while glycosylation at S87 makes the protein more compact and less diffusive. Based on a model of the earliest steps in aggregation, we predict that T72 should aggregate slower than unmodified protein, which is confirmed by ThT fluorescence measurements. In contrast, S87 should aggregate faster, which is not mirrored in ThT kinetics of later fibril formation but does not rule out a higher rate of formation of small oligomers. Together, these results show that posttranslational modifications do not uniformly affect aggregation propensity.
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5
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Balana AT, Mahul-Mellier AL, Nguyen BA, Horvath M, Javed A, Hard ER, Jasiqi Y, Singh P, Afrin S, Pedretti R, Singh V, Lee VMY, Luk KC, Saelices L, Lashuel HA, Pratt MR. O-GlcNAc forces an α-synuclein amyloid strain with notably diminished seeding and pathology. Nat Chem Biol 2024; 20:646-655. [PMID: 38347213 PMCID: PMC11062923 DOI: 10.1038/s41589-024-01551-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 01/12/2024] [Indexed: 02/15/2024]
Abstract
Amyloid-forming proteins such α-synuclein and tau, which are implicated in Alzheimer's and Parkinson's disease, can form different fibril structures or strains with distinct toxic properties, seeding activities and pathology. Understanding the determinants contributing to the formation of different amyloid features could open new avenues for developing disease-specific diagnostics and therapies. Here we report that O-GlcNAc modification of α-synuclein monomers results in the formation of amyloid fibril with distinct core structure, as revealed by cryogenic electron microscopy, and diminished seeding activity in seeding-based neuronal and rodent models of Parkinson's disease. Although the mechanisms underpinning the seeding neutralization activity of the O-GlcNAc-modified fibrils remain unclear, our in vitro mechanistic studies indicate that heat shock proteins interactions with O-GlcNAc fibril inhibit their seeding activity, suggesting that the O-GlcNAc modification may alter the interactome of the α-synuclein fibrils in ways that lead to reduce seeding activity in vivo. Our results show that posttranslational modifications, such as O-GlcNAc modification, of α-synuclein are key determinants of α-synuclein amyloid strains and pathogenicity.
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Affiliation(s)
- Aaron T Balana
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Anne-Laure Mahul-Mellier
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Binh A Nguyen
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Mian Horvath
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Afraah Javed
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Eldon R Hard
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Yllza Jasiqi
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Preeti Singh
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Shumaila Afrin
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Rose Pedretti
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Virender Singh
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Virginia M-Y Lee
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kelvin C Luk
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Lorena Saelices
- Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX, USA
| | - Hilal A Lashuel
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
| | - Matthew R Pratt
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA.
- Department Biological Sciences, University of Southern California, Los Angeles, CA, USA.
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Luna S, Malard F, Pereckas M, Aoki M, Aoki K, Olivier-Van Stichelen S. Studying the O-GlcNAcome of human placentas using banked tissue samples. Glycobiology 2024; 34:cwae005. [PMID: 38253038 PMCID: PMC11005170 DOI: 10.1093/glycob/cwae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
O-GlcNAcylation is a dynamic modulator of signaling pathways, equal in magnitude to the widely studied phosphorylation. With the rapid development of tools for its detection at the single protein level, the O-GlcNAc modification rapidly emerged as a novel diagnostic and therapeutic target in human diseases. Yet, mapping the human O-GlcNAcome in various tissues is essential for generating relevant biomarkers. In this study, we used human banked tissue as a sample source to identify O-GlcNAcylated protein targets relevant to human diseases. Using human term placentas, we propose (1) a method to clean frozen banked tissue of blood proteins; (2) an optimized protocol for the enrichment of O-GlcNAcylated proteins using immunoaffinity purification; and (3) a bioinformatic workflow to identify the most promising O-GlcNAc targets. As a proof-of-concept, we used 45 mg of banked placental samples from two pregnancies to generate intracellular protein extracts depleted of blood protein. Then, antibody-based O-GlcNAc enrichment on denatured samples yielded over 2000 unique HexNAc PSMs and 900 unique sites using 300 μg of protein lysate. Due to efficient sample cleanup, we also captured 82 HexNAc proteins with high placental expression. Finally, we provide a bioinformatic tool (CytOVS) to sort the HexNAc proteins based on their cellular localization and extract the most promising O-GlcNAc targets to explore further. To conclude, we provide a simple 3-step workflow to generate a manageable list of O-GlcNAc proteins from human tissue and improve our understanding of O-GlcNAcylation's role in health and diseases.
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Affiliation(s)
- Sarai Luna
- Department of Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
| | - Florian Malard
- INSERM U1212, CNRS UMR5320, ARNA Laboratory, University of Bordeaux, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - Michaela Pereckas
- Department of Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
| | - Mayumi Aoki
- Cancer Research Center, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
| | - Kazuhiro Aoki
- Cancer Research Center, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
- Department of Cell Biology, Neurobiology and Anatomy (CBNA), Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
| | - Stephanie Olivier-Van Stichelen
- Department of Biochemistry, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
- Cancer Research Center, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
- Cardiovascular Center, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
- Department of Obstetrics and Gynecology, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI 53226, United States
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Kim S, Shin SJ, Nam Y, Park YH, Kim BH, Park HH, Kumar V, Yoo DH, Lee YY, Hoe HS, Moon M. Korean red ginseng polysaccharide as a potential therapeutic agent targeting tau pathology in Alzheimer's disease. Int J Biol Macromol 2024; 263:130516. [PMID: 38423419 DOI: 10.1016/j.ijbiomac.2024.130516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 01/02/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
Tau is a microtubule-associated protein that plays a critical role in the stabilization and modulation of neuronal axons. Tau pathology is stronger associated with cognitive decline in patients with Alzheimer's disease (AD) than amyloid beta (Aβ) pathology. Hence, tau targeting is a promising approach for the treatment of AD. Previous studies have demonstrated that the non-saponin fraction with rich polysaccharide (NFP) from Korean red ginseng (KRG) can modulate tau aggregation and exert a therapeutic effect on AD. Therefore, we investigated the efficacy of NFP isolated from KRG on tau pathology in experimental models of AD. Our results showed that NFP from KRG ameliorated deposition and hyperphosphorylation of tau in the brain of 3xTg mice. Moreover, NFP from KRG modulated the aggregation and dissociation of tau K18 in vitro. We demonstrated the alleviatory effects of NFP from KRG on hyperphosphorylated tau and tau kinase in okadaic acid-treated HT22 cells. Furthermore, NFP from KRG mitigated Aβ deposition, neurodegeneration, and neuroinflammation in 3xTg mice. We revealed the neuroprotective effects of NFP from KRG on tau-induced neuronal loss in HT22 cells. Our results indicate that NFP extracted from KRG is a novel therapeutic agent for the treatment of AD associated with tau pathology.
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Affiliation(s)
- Sujin Kim
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea; Research Institute for Dementia Science, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Soo Jung Shin
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Yunkwon Nam
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Yong Ho Park
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Byeong-Hyeon Kim
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Hyun Ha Park
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Vijay Kumar
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Doo-Han Yoo
- Research Institute for Dementia Science, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea; Department of Occupational Therapy, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Yong Yook Lee
- The Korean Ginseng Research Institute, Korea Ginseng Corporation, Gajeong-ro 30, Shinseong-dong, Yuseong-gu, Daejeon 34128, Republic of Korea.
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu 41068, Republic of Korea; Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988, Republic of Korea.
| | - Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea; Research Institute for Dementia Science, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea.
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8
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Xu D, Song XJ, Chen X, Wang JW, Cui YL. Advances and future perspectives of intranasal drug delivery: A scientometric review. J Control Release 2024; 367:366-384. [PMID: 38286336 DOI: 10.1016/j.jconrel.2024.01.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
Intranasal drug delivery is as a noninvasive and efficient approach extensively utilized for treating the local, central nervous system, and systemic diseases. Despite numerous reviews delving into the application of intranasal drug delivery across biomedical fields, a comprehensive analysis of advancements and future perspectives remains elusive. This review elucidates the research progress of intranasal drug delivery through a scientometric analysis. It scrutinizes several challenges to bolster research in this domain, encompassing a thorough exploration of entry and elimination mechanisms specific to intranasal delivery, the identification of drugs compatible with the nasal cavity, the selection of dosage forms to surmount limited drug-loading capacity and poor solubility, and the identification of diseases amenable to the intranasal delivery strategy. Overall, this review furnishes a perspective aimed at galvanizing future research and development concerning intranasal drug delivery.
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Affiliation(s)
- Dong Xu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi' an 710032, China
| | - Xu-Jiao Song
- State Key Laboratory of Component-based Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Haihe Laboratory of Modern Chinese Medicine, Tianjin 301617, PR China
| | - Xue Chen
- State Key Laboratory of Component-based Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Haihe Laboratory of Modern Chinese Medicine, Tianjin 301617, PR China
| | - Jing-Wen Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi' an 710032, China
| | - Yuan-Lu Cui
- State Key Laboratory of Component-based Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Haihe Laboratory of Modern Chinese Medicine, Tianjin 301617, PR China.
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9
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Pratt MR, Vocadlo DJ. Understanding and exploiting the roles of O-GlcNAc in neurodegenerative diseases. J Biol Chem 2023; 299:105411. [PMID: 37918804 PMCID: PMC10687168 DOI: 10.1016/j.jbc.2023.105411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023] Open
Abstract
O-GlcNAc is a common modification found on nuclear and cytoplasmic proteins. Determining the catalytic mechanism of the enzyme O-GlcNAcase (OGA), which removes O-GlcNAc from proteins, enabled the creation of potent and selective inhibitors of this regulatory enzyme. Such inhibitors have served as important tools in helping to uncover the cellular and organismal physiological roles of this modification. In addition, OGA inhibitors have been important for defining the augmentation of O-GlcNAc as a promising disease-modifying approach to combat several neurodegenerative diseases including both Alzheimer's disease and Parkinson's disease. These studies have led to development and optimization of OGA inhibitors for clinical application. These compounds have been shown to be well tolerated in early clinical studies and are steadily advancing into the clinic. Despite these advances, the mechanisms by which O-GlcNAc protects against these various types of neurodegeneration are a topic of continuing interest since improved insight may enable the creation of more targeted strategies to modulate O-GlcNAc for therapeutic benefit. Relevant pathways on which O-GlcNAc has been found to exert beneficial effects include autophagy, necroptosis, and processing of the amyloid precursor protein. More recently, the development and application of chemical methods enabling the synthesis of homogenous proteins have clarified the biochemical effects of O-GlcNAc on protein aggregation and uncovered new roles for O-GlcNAc in heat shock response. Here, we discuss the features of O-GlcNAc in neurodegenerative diseases, the application of inhibitors to identify the roles of this modification, and the biochemical effects of O-GlcNAc on proteins and pathways associated with neurodegeneration.
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Affiliation(s)
- Matthew R Pratt
- Department of Chemistry and Department of Biological Sciences, University of Southern California, Los Angeles, California, USA.
| | - David J Vocadlo
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada; Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, Canada.
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10
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Weber P, Mészáros Z, Bojarová P, Ebner M, Fischer R, Křen V, Kulik N, Müller P, Vlachová M, Slámová K, Stütz AE, Thonhofer M, Torvisco A, Wrodnigg TM, Wolfsgruber A. Highly functionalized diaminocyclopentanes: A new route to potent and selective inhibitors of human O-GlcNAcase. Bioorg Chem 2023; 140:106819. [PMID: 37666109 DOI: 10.1016/j.bioorg.2023.106819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/11/2023] [Accepted: 08/27/2023] [Indexed: 09/06/2023]
Abstract
A new class of compounds inhibiting de-O-glycosylation of proteins has been identified. Highly substituted diaminocyclopentanes are impressively selective reversible non-transition state O-β-N-acetyl-d-glucosaminidase (O-GlcNAcase) inhibitors. The ease of preparative access and remarkable biological activities provide highly viable leads for the development of anti-tau-phosphorylation agents with a view to eventually ameliorating Alzheimer's disease.
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Affiliation(s)
- Patrick Weber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Zuzana Mészáros
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Manuel Ebner
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Natalia Kulik
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Philipp Müller
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Miluše Vlachová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Kristýna Slámová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Arnold E Stütz
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Martin Thonhofer
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Ana Torvisco
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Tanja M Wrodnigg
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Andreas Wolfsgruber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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11
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Galesic A, Pan B, Ramirez J, Rhoades E, Pratt MR, Petersson EJ. Combining non-canonical amino acid mutagenesis and native chemical ligation for multiply modifying proteins: A case study of α-synuclein post-translational modifications. Methods 2023; 218:101-109. [PMID: 37549799 PMCID: PMC10657485 DOI: 10.1016/j.ymeth.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023] Open
Abstract
The Parkinson's disease associated protein α-synuclein (αS) has been found to contain numerous post-translational modifications (PTMs), in both physiological and pathological states. One PTM site of particular interest is serine 87, which is subject to both O-linked β-N-acetylglucosamine (gS) modification and phosphorylation (pS), with αS-pS87 enriched in Parkinson's disease. An often-overlooked aspect of these PTMs is their effect on the membrane-binding properties of αS, which are important to its role in regulating neurotransmitter release. Here, we show how one can study these effects by synthesizing αS constructs containing authentic PTMs and labels for single molecule fluorescence correlation spectroscopy measurements. We synthesize αS-gS87 and αS-pS87 by combining native chemical ligation with genetic code expansion approaches. We introduce the fluorophore by a click reaction with a non-canonical amino acid. Beyond the specific problem of PTM effects on αS, our studies highlight the value of this combination of methods for multiply modifying proteins.
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Affiliation(s)
- Ana Galesic
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Buyan Pan
- Department of Chemistry; University of Pennsylvania; 231 South 34th Street; Philadelphia, PA 19104, USA
| | - Jennifer Ramirez
- Graduate Group in Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, 421 Curie Boulevard, Philadelphia, PA 19104, USA
| | - Elizabeth Rhoades
- Department of Chemistry; University of Pennsylvania; 231 South 34th Street; Philadelphia, PA 19104, USA
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, 421 Curie Boulevard, Philadelphia, PA 19104, USA
| | - Matthew R. Pratt
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - E. James Petersson
- Department of Chemistry; University of Pennsylvania; 231 South 34th Street; Philadelphia, PA 19104, USA
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, 421 Curie Boulevard, Philadelphia, PA 19104, USA
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12
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Kim DY, Park J, Han IO. Hexosamine biosynthetic pathway and O-GlcNAc cycling of glucose metabolism in brain function and disease. Am J Physiol Cell Physiol 2023; 325:C981-C998. [PMID: 37602414 DOI: 10.1152/ajpcell.00191.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/03/2023] [Accepted: 08/03/2023] [Indexed: 08/22/2023]
Abstract
Impaired brain glucose metabolism is considered a hallmark of brain dysfunction and neurodegeneration. Disruption of the hexosamine biosynthetic pathway (HBP) and subsequent O-linked N-acetylglucosamine (O-GlcNAc) cycling has been identified as an emerging link between altered glucose metabolism and defects in the brain. Myriads of cytosolic and nuclear proteins in the nervous system are modified at serine or threonine residues with a single N-acetylglucosamine (O-GlcNAc) molecule by O-GlcNAc transferase (OGT), which can be removed by β-N-acetylglucosaminidase (O-GlcNAcase, OGA). Homeostatic regulation of O-GlcNAc cycling is important for the maintenance of normal brain activity. Although significant evidence linking dysregulated HBP metabolism and aberrant O-GlcNAc cycling to induction or progression of neuronal diseases has been obtained, the issue of whether altered O-GlcNAcylation is causal in brain pathogenesis remains uncertain. Elucidation of the specific functions and regulatory mechanisms of individual O-GlcNAcylated neuronal proteins in both normal and diseased states may facilitate the identification of novel therapeutic targets for various neuronal disorders. The information presented in this review highlights the importance of HBP/O-GlcNAcylation in the neuronal system and summarizes the roles and potential mechanisms of O-GlcNAcylated neuronal proteins in maintaining normal brain function and initiation and progression of neurological diseases.
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Affiliation(s)
- Dong Yeol Kim
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Jiwon Park
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
| | - Inn-Oc Han
- Department of Biomedical Science, Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon, South Korea
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13
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Wang B, Moon SP, Cutolo G, Javed A, Ahn BS, Ryu AH, Pratt MR. HSP27 Inhibitory Activity against Caspase-3 Cleavage and Activation by Caspase-9 Is Enhanced by Chaperone O-GlcNAc Modification in Vitro. ACS Chem Biol 2023; 18:1698-1704. [PMID: 37450938 PMCID: PMC10442853 DOI: 10.1021/acschembio.3c00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
One of the O-GlcNAc modifications is the protection of cells against a variety of stressors that result in cell death. Previous experiments have focused on the overall ability of O-GlcNAc to prevent protein aggregation under stress as well as its ability to affect stress-response signaling pathways. Less attention has been paid to the potential role for O-GlcNAc in the direct inhibition of a major cell-death pathway, apoptosis. Apoptosis involves the sequential activation of caspase proteases, including the transfer of cell-stress information from initiator caspase-9 to effector caspase-3. Cells have multiple mechanisms to slow the apoptotic cascade, including heat shock protein HSP27, which can directly inhibit the activation of caspase-3 by caspase-9. We have previously shown that O-GlcNAc modification increases the chaperone activity of HSP27 against amyloid aggregation, raising the question as to whether this modification may play important roles in other facets of HSP27 biology. Here, we use protein chemistry to generate different versions of O-GlcNAc modified HSP27 and demonstrate that the modification enhances this antiapoptotic function of the chaperone, at least in an in vitro context. These results provide additional molecular insight into how O-GlcNAc functions as a mediator of cellular stress with important implications for human diseases like cancer and neurodegeneration.
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Affiliation(s)
- Binyou Wang
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Stuart P. Moon
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Giuliano Cutolo
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Afraah Javed
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Benjamin S. Ahn
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Andrew H. Ryu
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
| | - Matthew R. Pratt
- Department
of Chemistry and Biological Sciences, University of Southern
California, Los Angeles, California 90089, United States
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14
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Bell MB, Ouyang X, Shelton AK, Huynh NV, Mueller T, Chacko BK, Jegga AG, Chatham JC, Miller CR, Darley-Usmar V, Zhang J. Relationships between gene expression and behavior in mice in response to systemic modulation of the O-GlcNAcylation pathway. J Neurochem 2023; 165:682-700. [PMID: 37129420 DOI: 10.1111/jnc.15835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/30/2023] [Accepted: 04/27/2023] [Indexed: 05/03/2023]
Abstract
Enhancing protein O-GlcNAcylation by pharmacological inhibition of the enzyme O-GlcNAcase (OGA), which removes the O-GlcNAc modification from proteins, has been explored in mouse models of amyloid-beta and tau pathology. However, the O-GlcNAcylation-dependent link between gene expression and neurological behavior remains to be explored. Using chronic administration of Thiamet G (TG, an OGA inhibitor) in vivo, we used a protocol designed to relate behavior with the transcriptome and selected biochemical parameters from the cortex of individual animals. TG-treated mice showed improved working memory as measured using a Y-maze test. RNA sequencing analysis revealed 151 top differentially expressed genes with a Log2fold change >0.33 and adjusted p-value <0.05. Top TG-dependent upregulated genes were related to learning, cognition and behavior, while top downregulated genes were related to IL-17 signaling, inflammatory response and chemotaxis. Additional pathway analysis uncovered 3 pathways, involving gene expression including 14 cytochrome c oxidase subunits/regulatory components, chaperones or assembly factors, and 5 mTOR (mechanistic target of rapamycin) signaling factors. Multivariate Kendall correlation analyses of behavioral tests and the top TG-dependent differentially expressed genes revealed 91 statistically significant correlations in saline-treated mice and 70 statistically significant correlations in TG-treated mice. These analyses provide a network regulation landscape that is important in relating the transcriptome to behavior and the potential impact of the O-GlcNAC pathway.
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Affiliation(s)
- Margaret B Bell
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Xiaosen Ouyang
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Abigail K Shelton
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Nha V Huynh
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Toni Mueller
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Balu K Chacko
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - John C Chatham
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - C Ryan Miller
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Victor Darley-Usmar
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jianhua Zhang
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
- Birmingham VA Medical Center, University of Alabama at Birmingham, Birmingham, Alabama, USA
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15
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Hu CW, Wang A, Fan D, Worth M, Chen Z, Huang J, Xie J, Macdonald J, Li L, Jiang J. Cancer-derived mutation in the OGA stalk domain promotes cell malignancy through dysregulating PDLIM7 and p53. RESEARCH SQUARE 2023:rs.3.rs-2709128. [PMID: 36993758 PMCID: PMC10055641 DOI: 10.21203/rs.3.rs-2709128/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
O-GlcNAcase (OGA) is the sole enzyme that hydrolyzes O-GlcNAcylation from thousands of proteins and is dysregulated in many diseases including cancer. However, the substrate recognition and pathogenic mechanisms of OGA remain largely unknown. Here we report the first discovery of a cancer-derived point mutation on the OGA's non-catalytic stalk domain that aberrantly regulated a small set of OGA-protein interactions and O-GlcNAc hydrolysis in critical cellular processes. We uncovered a novel cancer-promoting mechanism in which the OGA mutant preferentially hydrolyzed the O-GlcNAcylation from modified PDLIM7 and promoted cell malignancy by down-regulating p53 tumor suppressor in different types of cells through transcription inhibition and MDM2-mediated ubiquitination. Our study revealed the OGA deglycosylated PDLIM7 as a novel regulator of p53-MDM2 pathway, offered the first set of direct evidence on OGA substrate recognition beyond its catalytic site, and illuminated new directions to interrogate OGA's precise role without perturbing global O-GlcNAc homeostasis for biomedical applications.
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Affiliation(s)
| | - Ao Wang
- University of Wisconsin-Madison
| | | | | | | | | | | | | | | | - Jiaoyang Jiang
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison
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16
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Balana AT, Mahul-Mellier AL, Nguyen BA, Horvath M, Javed A, Hard ER, Jasiqi Y, Singh P, Afrin S, Pedretti R, Singh V, Lee VMY, Luk KC, Saelices L, Lashuel HA, Pratt MR. O-GlcNAc modification forces the formation of an α-Synuclein amyloid-strain with notably diminished seeding activity and pathology. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.07.531573. [PMID: 36945566 PMCID: PMC10028859 DOI: 10.1101/2023.03.07.531573] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The process of amyloid fibril formation remains one of the primary targets for developing diagnostics and treatments for several neurodegenerative diseases (NDDs). Amyloid-forming proteins such α-Synuclein and Tau, which are implicated in the pathogenesis of Alzheimer's and Parkinson's disease, can form different types of fibril structure, or strains, that exhibit distinct structures, toxic properties, seeding activities, and pathology spreading patterns in the brain. Therefore, understanding the molecular and structural determinants contributing to the formation of different amyloid strains or their distinct features could open new avenues for developing disease-specific diagnostics and therapies. In this work, we report that O-GlcNAc modification of α-Synuclein monomers results in the formation of amyloid fibril with distinct core structure, as revealed by Cryo-EM, and diminished seeding activity in seeding-based neuronal and rodent models of Parkinson's disease. Although the mechanisms underpinning the seeding neutralization activity of the O-GlcNAc modified fibrils remain unclear, our in vitro mechanistic studies indicate that heat shock proteins interactions with O-GlcNAc fibril inhibit their seeding activity, suggesting that the O-GlcNAc modification may alter the interactome of the α-Synuclein fibrils in ways that lead to reduce seeding activity in vivo. Our results show that post-translational modifications, such as O-GlcNAc modification, of α-Synuclein are key determinants of α-Synuclein amyloid strains and pathogenicity. These findings have significant implications for how we investigate and target amyloids in the brain and could possibly explain the lack of correlation between amyloid burden and neurodegeneration or cognitive decline in some subtypes of NDDs.
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Affiliation(s)
- Aaron T. Balana
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, United States
| | - Anne-Laure Mahul-Mellier
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland CH-1015
| | - Binh A Nguyen
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Mian Horvath
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Afraah Javed
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, United States
| | - Eldon R. Hard
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, United States
| | - Yllza Jasiqi
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland CH-1015
| | - Preeti Singh
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Shumaila Afrin
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Rose Pedretti
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Virender Singh
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Virginia M.-Y. Lee
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kelvin C. Luk
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Lorena Saelices
- Center for Alzheimer’s and Neurodegenerative Disease, Department of Biophysics, Peter O’Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX-75390
| | - Hilal A. Lashuel
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland CH-1015
| | - Matthew R. Pratt
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, United States
- Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, United States
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17
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Abstract
O-linked β-N-acetylglucosamine (O-GlcNAc) is a ubiquitous post-translational modification in mammals, decorating thousands of intracellular proteins. O-GlcNAc cycling is an essential regulator of myriad aspects of cell physiology and is dysregulated in numerous human diseases. Notably, O-GlcNAcylation is abundant in the brain and numerous studies have linked aberrant O-GlcNAc signaling to various neurological conditions. However, the complexity of the nervous system and the dynamic nature of protein O-GlcNAcylation have presented challenges for studying of neuronal O-GlcNAcylation. In this context, chemical approaches have been a particularly valuable complement to conventional cellular, biochemical, and genetic methods to understand O-GlcNAc signaling and to develop future therapeutics. Here we review selected recent examples of how chemical tools have empowered efforts to understand and rationally manipulate O-GlcNAcylation in mammalian neurobiology.
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Affiliation(s)
- Duc Tan Huynh
- Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710, USA
| | - Michael Boyce
- Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710, USA
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18
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Xia M, Wang S, Qi Y, Long K, Li E, He L, Pan F, Guo Z, Hu Z. Inhibition of O-GlcNAc transferase sensitizes prostate cancer cells to docetaxel. Front Oncol 2022; 12:993243. [PMID: 36439421 PMCID: PMC9686342 DOI: 10.3389/fonc.2022.993243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/26/2022] [Indexed: 08/18/2023] Open
Abstract
The expression of O-GlcNAc transferase (OGT) and its catalytic product, O-GlcNAcylation (O-GlcNAc), are elevated in many types of cancers, including prostate cancer (PC). Inhibition of OGT serves as a potential strategy for PC treatment alone or combinational therapy. PC is the second common cancer type in male worldwide, for which chemotherapy is still the first-line treatment. However, the function of inhibition of OGT on chemotherapeutic response in PC cells is still unknown. In this study, we show that inhibition of OGT by genetic knockdown using shRNA or by chemical inhibition using OGT inhibitors sensitize PC cells to docetaxel, which is the most common chemotherapeutic agent in PC chemotherapy. Furthermore, we identified that microRNA-140 (miR-140) directly binds to OGT mRNA 3' untranslated region and inhibits OGT expression. Moreover, docetaxel treatment stimulates miR-140 expression, whereas represses OGT expression in PC cells. Overexpression of miR-140 enhanced the drug sensitivity of PC cells to docetaxel, which could be reversed by overexpression of OGT. Overall, this study demonstrates miR-140/OGT axis as therapeutic target in PC treatment and provides a promising adjuvant therapeutic strategy for PC therapy.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Zhigang Hu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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19
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Weber P, Mészáros Z, Jagečić D, Hribljan V, Mitrečić D, Bojarová P, Slámová K, Vrba J, Kulik N, Křen V, Stütz AE. Diaminocyclopentane-derived O-GlcNAcase inhibitors for combating tau hyperphosphorylation in Alzheimer's disease. Chem Commun (Camb) 2022; 58:8838-8841. [PMID: 35849011 DOI: 10.1039/d2cc02712g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed potent and selective aminocyclopentane-derived inhibitors of human O-N-acetyl-β-D-glucosaminidase (OGA) implicated in Alzheimer's disease. For example compound 13 was a nanomolar OGA inhibitor with 92 000-fold selectivity over human HexB. It was non-toxic and increased protein O-GlcNAcylation in the culture of murine neural cells, showing new alternatives in the treatment of tauopathies.
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Affiliation(s)
- Patrick Weber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010, Graz, Austria
| | - Zuzana Mészáros
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220, Praha 4, Czech Republic. .,Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 1903/3, CZ-16628, Praha 6, Czech Republic
| | - Denis Jagečić
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 3, HR-10000, Zagreb, Croatia
| | - Valentina Hribljan
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 3, HR-10000, Zagreb, Croatia
| | - Dinko Mitrečić
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 3, HR-10000, Zagreb, Croatia
| | - Pavla Bojarová
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220, Praha 4, Czech Republic.
| | - Kristýna Slámová
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220, Praha 4, Czech Republic.
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, CZ-77515, Olomouc, Czech Republic
| | - Natalia Kulik
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220, Praha 4, Czech Republic.
| | - Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220, Praha 4, Czech Republic.
| | - Arnold E Stütz
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010, Graz, Austria
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20
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Velueta-Viveros M, Martínez-Bailén M, Puerta A, Romero-Hernández LL, Křen V, Merino-Montiel P, Montiel-Smith S, Fernandes MX, Moreno-Vargas AJ, Padrón JM, López Ó, Fernández-Bolaños JG. Carbohydrate-derived bicyclic selenazolines as new dual inhibitors (cholinesterases/OGA) against Alzheimer’s disease. Bioorg Chem 2022; 127:105983. [DOI: 10.1016/j.bioorg.2022.105983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 11/30/2022]
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21
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Ouyang M, Yu C, Deng X, Zhang Y, Zhang X, Duan F. O-GlcNAcylation and Its Role in Cancer-Associated Inflammation. Front Immunol 2022; 13:861559. [PMID: 35432358 PMCID: PMC9010872 DOI: 10.3389/fimmu.2022.861559] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/14/2022] [Indexed: 12/24/2022] Open
Abstract
Cancer cells, as well as surrounding stromal and inflammatory cells, form an inflammatory tumor microenvironment (TME) to promote all stages of carcinogenesis. As an emerging post-translational modification (PTM) of serine and threonine residues of proteins, O-linked-N-Acetylglucosaminylation (O-GlcNAcylation) regulates diverse cancer-relevant processes, such as signal transduction, transcription, cell division, metabolism and cytoskeletal regulation. Recent studies suggest that O-GlcNAcylation regulates the development, maturation and functions of immune cells. However, the role of protein O-GlcNAcylation in cancer-associated inflammation has been less explored. This review summarizes the current understanding of the influence of protein O-GlcNAcylation on cancer-associated inflammation and the mechanisms whereby O-GlcNAc-mediated inflammation regulates tumor progression. This will provide a theoretical basis for further development of anti-cancer therapies.
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Affiliation(s)
- Muzi Ouyang
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Changmeng Yu
- School of Anesthesiology, Xuzhou Medical University, Xuzhou, China
| | - Xiaolian Deng
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Yingyi Zhang
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Xudong Zhang
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Fangfang Duan
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Shenzhen, China
- *Correspondence: Fangfang Duan,
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