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Esser N, Hogan MF, Templin AT, Akter R, Fountaine BS, Castillo JJ, El-Osta A, Manathunga L, Zhyvoloup A, Raleigh DP, Zraika S, Hull RL, Kahn SE. The islet tissue plasminogen activator/plasmin system is upregulated with human islet amyloid polypeptide aggregation and protects beta cells from aggregation-induced toxicity. Diabetologia 2024; 67:1897-1911. [PMID: 39245780 PMCID: PMC11410534 DOI: 10.1007/s00125-024-06161-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 09/10/2024]
Abstract
AIMS/HYPOTHESIS Apart from its fibrinolytic activity, the tissue plasminogen activator (tPA)/plasmin system has been reported to cleave the peptide amyloid beta, attenuating brain amyloid deposition in Alzheimer's disease. As aggregation of human islet amyloid polypeptide (hIAPP) is toxic to beta cells, we sought to determine whether activation of the fibrinolytic system can also reduce islet amyloid deposition and its cytotoxic effects, which are both observed in type 2 diabetes. METHODS The expression of Plat (encoding tPA) and plasmin activity were measured in isolated islets from amyloid-prone hIAPP transgenic mice or non-transgenic control islets expressing non-amyloidogenic mouse islet amyloid polypeptide cultured in the absence or presence of the amyloid inhibitor Congo Red. Plat expression was also determined in hIAPP-treated primary islet endothelial cells, bone marrow-derived macrophages (BMDM) and INS-1 cells, in order to determine the islet cell type(s) producing tPA in response to hIAPP aggregation. Cell-free thioflavin-T assays and MS were used to respectively monitor hIAPP aggregation kinetics and investigate plasmin cleavage of hIAPP. Cell viability was assessed in INS-1 beta cells treated with hIAPP with or without plasmin. Finally, to confirm the findings in human samples, PLAT expression was measured in freshly isolated islets from donors with and without type 2 diabetes. RESULTS In isolated islets from transgenic mice, islet Plat expression and plasmin activity increased significantly with the process of amyloid deposition (p≤0.01, n=5); these effects were not observed in islets from non-transgenic mice and were blocked by Congo Red (p≤0.01, n=4). In response to hIAPP exposure, Plat expression increased in BMDM and INS-1 cells vs vehicle-treated cells (p≤0.05, n=4), but not in islet endothelial cells. Plasmin reduced hIAPP fibril formation in a dose-dependent manner in a cell-free system, and restored hIAPP-induced loss of cell viability in INS-1 beta cells (p≤0.01, n=5). Plasmin cleaved monomeric hIAPP, inducing a rapid decrease in the abundance of full-length hIAPP and the appearance of hIAPP 1-11 and 12-37 fragments. hIAPP 12-37, which contains the critical amyloidogenic region, was not toxic to INS-1 cells. Finally, PLAT expression was significantly increased by 2.4-fold in islets from donors with type 2 diabetes (n=4) vs islets from donors without type 2 diabetes (n=7) (p≤0.05). CONCLUSIONS/INTERPRETATION The fibrinolytic system is upregulated in islets with hIAPP aggregation. Plasmin rapidly degrades hIAPP, limiting its aggregation into amyloid and thus protecting beta cells from hIAPP-induced toxicity. Thus, increasing islet plasmin activity might be a strategy to limit beta cell loss in type 2 diabetes.
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Affiliation(s)
- Nathalie Esser
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
- Laboratory of Immunometabolism and Nutrition, GIGA, University of Liège, CHU of Liège, Liège, Belgium
- Division of Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU of Liège, Liège, Belgium
| | - Meghan F Hogan
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Andrew T Templin
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
- Division of Endocrinology, Department of Medicine, Roudebush VA Medical Center and Indiana University School of Medicine, Indianapolis, IN, USA
| | - Rehana Akter
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | | | - Joseph J Castillo
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Assam El-Osta
- Epigenetics in Human Health and Disease Program, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Lakshan Manathunga
- Department of Chemistry, Stony Brook University, Stony Brook, NY, USA
- Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, NY, USA
| | - Alexander Zhyvoloup
- Research Department of Structural and Molecular Biology, University College London, London, UK
| | - Daniel P Raleigh
- Department of Chemistry, Stony Brook University, Stony Brook, NY, USA.
- Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, NY, USA.
- Research Department of Structural and Molecular Biology, University College London, London, UK.
| | - Sakeneh Zraika
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Rebecca L Hull
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Steven E Kahn
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA.
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Su X, Lu G, Ye L, Shi R, Zhu M, Yu X, Li Z, Jia X, Feng L. Moringa oleifera Lam.: a comprehensive review on active components, health benefits and application. RSC Adv 2023; 13:24353-24384. [PMID: 37588981 PMCID: PMC10425832 DOI: 10.1039/d3ra03584k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 07/21/2023] [Indexed: 08/18/2023] Open
Abstract
Moringa oleifera Lam. is an edible therapeutic plant that is native to India and widely cultivated in tropical countries. In this paper, the current application of M. oleifera was discussed by summarizing its medicinal parts, active components and potential mechanism. The emerging products of various formats such as drug preparation and product application reported in the last years were also clarified. Based on literature reports, the unique components and biological activities of M. oleifera need to be further studied. In the future, a variety of new technologies should be applied to the development of M. oleifera products, to enrich the varieties of dosage forms, improve the bitter taste masking technology, and make it better for use in the fields of food and medicine.
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Affiliation(s)
- Xinyue Su
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Guanzheng Lu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Liang Ye
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Ruyu Shi
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Maomao Zhu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Xinming Yu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Zhiyong Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700 P. R. China
| | - Xiaobin Jia
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
| | - Liang Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University Nanjing 211198 P. R. China
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Chen Y, Li Q, Li X, Liu H, Li P, Hai R, Guo Y, Wang S, Wang K, Du C. Amylin regulates testosterone levels via steroidogenesis-related enzymes in the central nervous system of male mice. Neuropeptides 2022; 96:102288. [PMID: 36279616 DOI: 10.1016/j.npep.2022.102288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 10/14/2022]
Abstract
Amylin is a peripheral satiation signal polypeptide co-secreted with insulin by pancreatic β-cells in response to nutrient ingestion. Amylin participates in the eating-inhibitory effect and regulates energy metabolism by acting on the central nervous system (CNS). However, the role of amylin in regulating the biosynthesis of steroid hormones, such as testosterone, through the hypothalamic-pituitary-gonadal axis (HPG) remains unexplored. However, only limited evidence is available on the involvement of amylin in steroid synthesis, we hypothesize that amylin regulates testosterone levels via steroidogenesis-related enzymes in the CNS. In this study, we elucidated the effect of intraperitoneal injection of amylin on the protein expression of steroidogenesis-related enzymes, including 3β-hydroxysteroid dehydrogenase (3β-HSD), cytochrome P450 17A1 (CYP17A1), and steroidogenic acute regulatory protein (StAR), and phospho-extracellular signal-regulated kinase (pERK). Additionally, the effect of amylin on testosterone levels in male mice was examined. Our results suggested that 3β-HSD and CYP17A1 neurons were widely expressed in the CNS of male mice, whereas StAR neurons were mainly expressed in the zona incerta (ZI) and locus coeruleus (LC) regions. Intraperitoneal injection of amylin significantly reduced (p < 0.01) the expression of 3β-HSD, CYP17A1, and StAR in ZI and other areas near the third ventricle (3 V) but increased (p < 0.01) pERK expression, brain testosterone levels, serum FSH, serum LH, and decreased (p < 0.01) serum testosterone levels in mice. In conclusion, amylin regulates testosterone levels via steroidogenesis-related enzymes in the central nervous system of male mice.
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Affiliation(s)
- Yujie Chen
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China
| | - Qiang Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xiaojing Li
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Haodong Liu
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Penghui Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Rihan Hai
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China
| | - Yongqing Guo
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China
| | - Siwei Wang
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang 050000, China; Key Laboratory of Crop Cultivation Physiology and Green Production in Hebei Province, Shijiazhuang 050000, China
| | - Kun Wang
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang 050000, China; Key Laboratory of Crop Cultivation Physiology and Green Production in Hebei Province, Shijiazhuang 050000, China
| | - Chenguang Du
- Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China; College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China.
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Blencowe M, Furterer A, Wang Q, Gao F, Rosenberger M, Pei L, Nomoto H, Mawla AM, Huising MO, Coppola G, Yang X, Butler PC, Gurlo T. IAPP-induced beta cell stress recapitulates the islet transcriptome in type 2 diabetes. Diabetologia 2022; 65:173-187. [PMID: 34554282 PMCID: PMC8660728 DOI: 10.1007/s00125-021-05569-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 07/30/2021] [Indexed: 01/22/2023]
Abstract
AIMS/HYPOTHESIS Type 2 diabetes is characterised by islet amyloid and toxic oligomers of islet amyloid polypeptide (IAPP). We posed the questions, (1) does IAPP toxicity induce an islet response comparable to that in humans with type 2 diabetes, and if so, (2) what are the key transcriptional drivers of this response? METHODS The islet transcriptome was evaluated in five groups of mice: beta cell specific transgenic for (1) human IAPP, (2) rodent IAPP, (3) human calpastatin, (4) human calpastatin and human IAPP, and (5) wild-type mice. RNA sequencing data was analysed by differential expression analysis and gene co-expression network analysis to establish the islet response to adaptation to an increased beta cell workload of soluble rodent IAPP, the islet response to increased expression of oligomeric human IAPP, and the extent to which the latter was rescued by suppression of calpain hyperactivation by calpastatin. Rank-rank hypergeometric overlap analysis was used to compare the transcriptome of islets from human or rodent IAPP transgenic mice vs humans with prediabetes or type 2 diabetes. RESULTS The islet transcriptomes in humans with prediabetes and type 2 diabetes are remarkably similar. Beta cell overexpression of soluble rodent or oligomer-prone human IAPP induced changes in islet transcriptome present in prediabetes and type 2 diabetes, including decreased expression of genes that confer beta cell identity. Increased expression of human IAPP, but not rodent IAPP, induced islet inflammation present in prediabetes and type 2 diabetes in humans. Key mediators of the injury responses in islets transgenic for human IAPP or those from individuals with type 2 diabetes include STAT3, NF-κB, ESR1 and CTNNB1 by transcription factor analysis and COL3A1, NID1 and ZNF800 by gene regulatory network analysis. CONCLUSIONS/INTERPRETATION Beta cell injury mediated by IAPP is a plausible mechanism to contribute to islet inflammation and dedifferentiation in type 2 diabetes. Inhibition of IAPP toxicity is a potential therapeutic target in type 2 diabetes.
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Affiliation(s)
- Montgomery Blencowe
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
- Molecular, Cellular, and Integrative Physiology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, USA
| | - Allison Furterer
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Qing Wang
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Fuying Gao
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Madeline Rosenberger
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Lina Pei
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Hiroshi Nomoto
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Alex M Mawla
- Department of Neurobiology, Physiology and Behavior, College of Biological Sciences, University of California, Davis, Davis, CA, USA
| | - Mark O Huising
- Department of Neurobiology, Physiology and Behavior, College of Biological Sciences, University of California, Davis, Davis, CA, USA
| | - Giovanni Coppola
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
- Department of Neurology, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Xia Yang
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
- Molecular, Cellular, and Integrative Physiology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, USA
| | - Peter C Butler
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Tatyana Gurlo
- Larry L. Hillblom Islet Research Center, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA.
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Altamirano-Bustamante MM, Altamirano-Bustamante NF, Larralde-Laborde M, Lara-Martínez R, Leyva-García E, Garrido-Magaña E, Rojas G, Jiménez-García LF, Revilla-Monsalve C, Altamirano P, Calzada-León R. Unpacking the aggregation-oligomerization-fibrillization process of naturally-occurring hIAPP amyloid oligomers isolated directly from sera of children with obesity or diabetes mellitus. Sci Rep 2019; 9:18465. [PMID: 31804529 PMCID: PMC6895187 DOI: 10.1038/s41598-019-54570-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 11/14/2019] [Indexed: 12/14/2022] Open
Abstract
The formation of amyloid oligomers and fibrils of the human islet amyloid polypeptide (hIAPP) has been linked with β- cell failure and death which causes the onset, progression, and comorbidities of diabetes. We begin to unpack the aggregation-oligomerization-fibrillization process of these oligomers taken from sera of pediatric patients. The naturally occurring or real hIAPP (not synthetic) amyloid oligomers (RIAO) were successfully isolated, we demonstrated the presence of homo (dodecamers, hexamers, and trimers) and hetero-RIAO, as well as several biophysical characterizations which allow us to learn from the real phenomenon taking place. We found that the aggregation/oligomerization process is active in the sera and showed that it happens very fast. The RIAO can form fibers and react with anti-hIAPP and anti-amyloid oligomers antibodies. Our results opens the epistemic horizon and reveal real differences between the four groups (Controls vs obesity, T1DM or T2DM) accelerating the process of understanding and discovering novel and more efficient prevention, diagnostic, transmission and therapeutic pathways.
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Affiliation(s)
- Myriam M Altamirano-Bustamante
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico.
| | | | - Mateo Larralde-Laborde
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | | | - Edgar Leyva-García
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Eulalia Garrido-Magaña
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Gerardo Rojas
- UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | | | - Cristina Revilla-Monsalve
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
| | - Perla Altamirano
- Unidad de Investigación en Enfermedades Metabólicas, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico city, Mexico
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