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Kumar A, Welch N, Mishra S, Bellar A, Silva RN, Li L, Singh SS, Sharkoff M, Kerr A, Chelluboyina AK, Sekar J, Attaway AH, Hoppel C, Willard B, Davuluri G, Dasarathy S. Metabolic reprogramming during hyperammonemia targets mitochondrial function and postmitotic senescence. JCI Insight 2021; 6:154089. [PMID: 34935641 PMCID: PMC8783680 DOI: 10.1172/jci.insight.154089] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/03/2021] [Indexed: 12/27/2022] Open
Abstract
Ammonia is a cytotoxic metabolite with pleiotropic molecular and metabolic effects, including senescence induction. During dysregulated ammonia metabolism, which occurs in chronic diseases, skeletal muscle becomes a major organ for nonhepatocyte ammonia uptake. Muscle ammonia disposal occurs in mitochondria via cataplerosis of critical intermediary metabolite α-ketoglutarate, a senescence-ameliorating molecule. Untargeted and mitochondrially targeted data were analyzed by multiomics approaches. These analyses were validated experimentally to dissect the specific mitochondrial oxidative defects and functional consequences, including senescence. Responses to ammonia lowering in myotubes and in hyperammonemic portacaval anastomosis rat muscle were studied. Whole-cell transcriptomics integrated with whole-cell, mitochondrial, and tissue proteomics showed distinct temporal clusters of responses with enrichment of oxidative dysfunction and senescence-related pathways/proteins during hyperammonemia and after ammonia withdrawal. Functional and metabolic studies showed defects in electron transport chain complexes I, III, and IV; loss of supercomplex assembly; decreased ATP synthesis; increased free radical generation with oxidative modification of proteins/lipids; and senescence-associated molecular phenotype–increased β-galactosidase activity and expression of p16INK, p21, and p53. These perturbations were partially reversed by ammonia lowering. Dysregulated ammonia metabolism caused reversible mitochondrial dysfunction by transcriptional and translational perturbations in multiple pathways with a distinct skeletal muscle senescence-associated molecular phenotype.
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Affiliation(s)
| | | | | | | | | | - Ling Li
- Proteomics & Metabolomics Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | | | | | | | | | | | | | - Charles Hoppel
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Belinda Willard
- Proteomics & Metabolomics Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Gangarao Davuluri
- Department of Integrated Physiology and Molecular Metabolism, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Srinivasan Dasarathy
- Department of Inflammation & Immunity and.,Department of Gastroenterology, Hepatology & Nutrition, Cleveland Clinic, Cleveland, Ohio, USA
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Király M, Kiss BD, Horváth P, Drahos L, Mirzahosseini A, Pálfy G, Antal I, Ludányi K. Investigating thermal stability based on the structural changes of lactase enzyme by several orthogonal methods. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021; 30:e00637. [PMID: 34136367 PMCID: PMC8182373 DOI: 10.1016/j.btre.2021.e00637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 05/24/2021] [Indexed: 11/21/2022]
Abstract
Thermal stability of lactase (β-galactosidase) enzyme has been studied by a variety of physico-chemical methods. β-galactosidase is the main active ingredient of medications for lactose intolerance. It is typically produced industrially by the Aspergillus oryzae filamentous fungus. Lactase was used as a model to help understand thermal stability of enzyme-type biopharmaceuticals. Enzyme activity (hydrolyzation of lactose) of β-galactosidase was determined after storing the solid enzyme substance at various temperatures. For a better understanding of the relationship between structure and activity changes we determined the mass and size of the molecules with gel electrophoresis and dynamic light scattering and detected aggregation processes. A bottom-up proteomic procedure was used to determine the primary amino acid sequence and to investigate changes in the N-glycosylation pattern of the protein. NMR and CD spectroscopic methods were used to observe changes in higher order structures and to reveal relationships between structural and functional changes.
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Affiliation(s)
- Márton Király
- Department of Pharmaceutics, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
| | - Borbála Dalmadi Kiss
- Department of Pharmaceutics, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
| | - Péter Horváth
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., H-1117, Budapest, Hungary
| | - Arash Mirzahosseini
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
| | - Gyula Pálfy
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. sétány 1/A, 1117, Budapest, Hungary
- Protein Modeling Group HAS-ELTE, Institute of Chemistry, Eötvös Loránd University, 1538, Budapest, P.O.B. 32, Hungary
| | - István Antal
- Department of Pharmaceutics, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
| | - Krisztina Ludányi
- Department of Pharmaceutics, Faculty of Pharmacy, Semmelweis University, Hőgyes Endre u. 7., 1092, Budapest, Hungary
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A multi-pumping flow analysis system for β-galactosidase activity assays. Food Chem 2019; 294:231-237. [DOI: 10.1016/j.foodchem.2019.04.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/31/2019] [Accepted: 04/10/2019] [Indexed: 11/18/2022]
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Three-layer poly(methyl methacrylate) microsystem for analysis of lysosomal enzymes for diagnostic purposes. Anal Chim Acta 2015; 853:702-709. [DOI: 10.1016/j.aca.2014.08.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/18/2014] [Indexed: 11/19/2022]
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Sarbu M, Robu A, Peter-Katalinić J, Zamfir AD. Automated chip-nanoelectrospray mass spectrometry for glycourinomics in Schindler disease type I. Carbohydr Res 2014; 398:90-100. [DOI: 10.1016/j.carres.2014.08.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/19/2014] [Accepted: 08/21/2014] [Indexed: 12/16/2022]
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Berardi AS, Pannuzzo G, Graziano A, Costantino-Ceccarini E, Piomboni P, Luddi A. Pharmacological chaperones increase residual β-galactocerebrosidase activity in fibroblasts from Krabbe patients. Mol Genet Metab 2014; 112:294-301. [PMID: 24913062 DOI: 10.1016/j.ymgme.2014.05.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/15/2014] [Accepted: 05/15/2014] [Indexed: 11/25/2022]
Abstract
Krabbe disease or globoid cell leukodystrophy is a degenerative, lysosomal storage disease resulting from the deficiency of β-galactocerebrosidase activity. This enzyme catalyzes the lysosomal hydrolysis of galactocerebroside and psychosine. Krabbe disease is inherited as an autosomal recessive trait, and many of the 70 disease-causing mutations identified in the GALC gene are associated with protein misfolding. Recent studies have shown that enzyme inhibitors can sometimes translocate misfolded polypeptides to their appropriate target organelle bypassing the normal cellular quality control machinery and resulting in enhanced activity. In search for pharmacological chaperones that could rescue the β-galactocerebrosidase activity, we investigated the effect of α-Lobeline or 3',4',7-trihydroxyisoflavone on several patient-derived fibroblast cell lines carrying missense mutations, rather than on transduced cell lines. Incubation of these cell lines with α-lobeline or 3',4',7-trihydroxyisoflavone leads to an increase of β-galacocerebrosidase activity in p.G553R + p.G553R, in p.E130K + p.N295T and in p.G57S + p.G57S mutant forms over the critical threshold. The low but sustained expression of β-galactocerebrosidase induced by these compounds is a promising result; in fact, it is known that residual enzyme activity of only 15-20% is sufficient for clinical efficacy. The molecular interaction of the two chaperones with β-galactocerebrosidase is also supported by in silico analysis. Collectively, our combined in silico-in vitro approach indicate α-lobeline and 3',4',7-trihydroxyisoflavone as two potential pharmacological chaperones for the treatment or improvement of quality of life in selected Krabbe disease patients.
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Affiliation(s)
- Anna Sara Berardi
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Giovanna Pannuzzo
- Department of Bio-Medical Sciences, Section of Physiology, University of Catania, Catania, Italy
| | - Adriana Graziano
- Department of Bio-Medical Sciences, Section of Physiology, University of Catania, Catania, Italy
| | | | - Paola Piomboni
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Alice Luddi
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy.
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