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Abstract
Two-dimensional difference gel electrophoresis (2D-DIGE) is an elegant gel electrophoretic analytical tool for comparative protein assessment. It is based on two-dimensional gel electrophoresis (2D-GE) separation of fluorescently labeled protein extracts. The tagging procedures are designed to not interfere with the chemical properties of proteins with respect to their pI and electrophoretic mobility, once a proper labeling protocol is followed. The use of an internal pooled standard makes 2D-DIGE a highly accurate quantitative method enabling multiple protein samples to be separated on the same two-dimensional gel. Technical limitations of this technique (i.e., underrating of low abundant, high molecular mass and integral membrane proteins) are counterbalanced by the incomparable separation power which allows proteoforms and unknown PTM (posttranslational modification) identification. Moreover, the image matching and cross-gel statistical analysis generates robust quantitative results making data validation by independent technologies successful.
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Affiliation(s)
- Cecilia Gelfi
- Department of Biomedical Sciences for Health, University of Milan, Segrate, Italy
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Daniele Capitanio
- Department of Biomedical Sciences for Health, University of Milan, Segrate, Italy.
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Effects of Omega-3 and Antioxidant Cocktail Supplement on Prolonged Bed Rest: Results from Serum Proteome and Sphingolipids Analysis. Cells 2022; 11:cells11132120. [PMID: 35805205 PMCID: PMC9266137 DOI: 10.3390/cells11132120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/17/2022] [Accepted: 07/04/2022] [Indexed: 01/27/2023] Open
Abstract
Physical inactivity or prolonged bed rest (BR) induces muscle deconditioning in old and young subjects and can increase the cardiovascular disease risk (CVD) with dysregulation of the lipemic profile. Nutritional interventions, combining molecules such as polyphenols, vitamins and essential fatty acids, can influence some metabolic features associated with physical inactivity and decrease the reactive oxidative and nitrosative stress (RONS). The aim of this study was to detect circulating molecules correlated with BR in serum of healthy male subjects enrolled in a 60-day BR protocol to evaluate a nutritional intervention with an antioxidant cocktail as a disuse countermeasure (Toulouse COCKTAIL study). The serum proteome, sphingolipidome and nitrosoproteome were analyzed adopting different mass spectrometry-based approaches. Results in placebo-treated BR subjects indicated a marked decrease of proteins associated with high-density lipoproteins (HDL) involved in lipemic homeostasis not found in the cocktail-treated BR group. Moreover, long-chain ceramides decreased while sphingomyelin increased in the BR cocktail-treated group. In placebo, the ratio of S-nitrosylated/total protein increased for apolipoprotein D and several proteins were over-nitrosylated. In cocktail-treated BR subjects, the majority of protein showed a pattern of under-nitrosylation, except for ceruloplasmin and hemopexin, which were over-nitrosylated. Collectively, data indicate a positive effect of the cocktail in preserving lipemic and RONS homeostasis in extended disuse conditions.
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Barbacini P, Torretta E, Arosio B, Ferri E, Capitanio D, Moriggi M, Gelfi C. Novel Insight into the Serum Sphingolipid Fingerprint Characterizing Longevity. Int J Mol Sci 2022; 23:ijms23052428. [PMID: 35269570 PMCID: PMC8910653 DOI: 10.3390/ijms23052428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 01/25/2023] Open
Abstract
Sphingolipids (SLs) are structural components of the lipid bilayer regulating cell functions. In biological fluids, their distribution is sex-specific and is at variance in aging and many disorders. The aim of this study is to identify SL species associated with the decelerated aging of centenarians. SLs, extracted from serum of adults (Ad, 35–37 years old), aged (Ag, 75–77 years old) and centenarian (C, 105–107 years old) women were analyzed by LC-MS/MS in combination with mRNA levels in peripheral blood mononuclear cells (PBMCs) of SL biosynthetic enzymes. Results indicated in Ag and C vs. Ad a comparable ceramides (Cers) increase, whereas dihydroceramide (dhCer) decreased in C vs. Ad. Hexosylceramides (HexCer) species, specifically HexCer 16:0, 22:0 and 24:1 acyl chains, increased in C vs. Ag representing a specific trait of C. Sphingosine (Sph), dihydrosphingosine (dhSph), sphingosine-1-phosphate (S1P) and dihydrosphingosine-1-phosphate (dhS1P), increased both in Ag and C vs. Ad, with higher levels in Ag, indicating a SL fine-tuning associated with a reduced physiological decline in C. mRNA levels of enzymes involved in ceramide de novo biosynthesis increased in Ag whereas enzymes involved in sphingomyelin (SM) degradation increased in C. Collectively, results suggest that Ag produce Cers by de novo synthesis whereas C activate a protective mechanism degrading SMs to Cers converting it into glycosphingolipids.
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Affiliation(s)
- Pietro Barbacini
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy; (P.B.); (D.C.)
| | | | - Beatrice Arosio
- Department of Clinical Sciences and Community Health, University of Milan, Via Pace 9, 20122 Milan, Italy;
| | - Evelyn Ferri
- Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Via Pace 9, 20122 Milan, Italy;
| | - Daniele Capitanio
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy; (P.B.); (D.C.)
| | - Manuela Moriggi
- Gastroenterology and Digestive Endoscopy Unit, IRCCS Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy;
| | - Cecilia Gelfi
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy; (P.B.); (D.C.)
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy;
- Correspondence: ; Tel.: +39-02-50330475
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Blottner D, Capitanio D, Trautmann G, Furlan S, Gambara G, Moriggi M, Block K, Barbacini P, Torretta E, Py G, Chopard A, Vida I, Volpe P, Gelfi C, Salanova M. Nitrosative Redox Homeostasis and Antioxidant Response Defense in Disused Vastus lateralis Muscle in Long-Term Bedrest (Toulouse Cocktail Study). Antioxidants (Basel) 2021; 10:antiox10030378. [PMID: 33802593 PMCID: PMC8001160 DOI: 10.3390/antiox10030378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/22/2021] [Accepted: 02/25/2021] [Indexed: 12/01/2022] Open
Abstract
Increased oxidative stress by reactive oxygen species (ROS) and reactive nitrogen species (RNS) is a major determinant of disuse-induced muscle atrophy. Muscle biopsies (thigh vastus lateralis, VL) obtained from healthy male subjects enrolled in the Toulouse Cocktail bedrest (BR) study were used to assess efficacy of an antioxidant cocktail (polyphenols, omega-3, vitamin E, and selenium) to counteract the increased redox homeostasis and enhance the antioxidant defense response by using label-free LC–MS/MS and NITRO-DIGE (nitrosated proteins), qPCR, and laser confocal microscopy. Label-free LC–MS/MS indicated that treatment prevented the redox homeostasis dysregulation and promoted structural remodeling (TPM3, MYH7, MYBPC, MYH1, MYL1, HRC, and LUM), increment of RyR1, myogenesis (CSRP3), and skeletal muscle development (MUSTN1, LMNA, AHNAK). These changes were absent in the Placebo group. Glycolysis, tricarboxylic acid cycle (TCA), oxidative phosphorylation, fatty acid beta-oxidation, and mitochondrial transmembrane transport were normalized in treated subjects. Proteins involved in protein folding were also normalized, whereas protein entailed in ion homeostasis decreased. NITRO-DIGE analysis showed significant protein nitrosylation changes for CAT, CA3, SDHA, and VDAC2 in Treatment vs. Placebo. Similarly, the nuclear factor erythroid 2-related factor 2 (Nrf-2) antioxidant response element (Nrf-2 ARE) signaling pathway showed an enhanced response in the Treatment group. Increased nitrosative redox homeostasis and decreased antioxidant defense response were found in post-BR control (Placebo, n = 10) vs. the antioxidant cocktail treated group (Treatment, n = 10). Taken together, increased nitrosative redox homeostasis and muscle deterioration during BR-driven physical inactivity were prevented, whereas decreased antioxidant nitrosative stress defense response was attenuated by Treatment suggesting positive effects of the nutritional intervention protocol in bedrest.
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Affiliation(s)
- Dieter Blottner
- Institute of Integrative Neuroanatomy, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10115 Berlin, Germany; (D.B.); (G.T.); (I.V.)
- Center of Space Medicine Berlin, 10115 Berlin, Germany; (G.G.); (K.B.)
| | - Daniele Capitanio
- Department of Biomedical Sciences for Health, University of Milan, Via Luigi Mangiagalli 31, 20133 Milan, Italy; (D.C.); (M.M.); (P.B.); (C.G.)
| | - Gabor Trautmann
- Institute of Integrative Neuroanatomy, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10115 Berlin, Germany; (D.B.); (G.T.); (I.V.)
| | - Sandra Furlan
- C.N.R. Institute of Neuroscience, 35121 Padova, Italy;
| | - Guido Gambara
- Center of Space Medicine Berlin, 10115 Berlin, Germany; (G.G.); (K.B.)
| | - Manuela Moriggi
- Department of Biomedical Sciences for Health, University of Milan, Via Luigi Mangiagalli 31, 20133 Milan, Italy; (D.C.); (M.M.); (P.B.); (C.G.)
- IRCCS Policlinico S. Donato, Piazza Edmondo Malan 2, 20097 San Donato Milanese, Italy
| | - Katharina Block
- Center of Space Medicine Berlin, 10115 Berlin, Germany; (G.G.); (K.B.)
| | - Pietro Barbacini
- Department of Biomedical Sciences for Health, University of Milan, Via Luigi Mangiagalli 31, 20133 Milan, Italy; (D.C.); (M.M.); (P.B.); (C.G.)
| | - Enrica Torretta
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161 Milan, Italy;
| | - Guillaume Py
- UFR STAPS, INRAE, Université de Montpellier, UMR 866 Dynamique et Métabolisme, 34060 Montpellier, France; (G.P.); (A.C.)
| | - Angèle Chopard
- UFR STAPS, INRAE, Université de Montpellier, UMR 866 Dynamique et Métabolisme, 34060 Montpellier, France; (G.P.); (A.C.)
| | - Imre Vida
- Institute of Integrative Neuroanatomy, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10115 Berlin, Germany; (D.B.); (G.T.); (I.V.)
| | - Pompeo Volpe
- Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy;
| | - Cecilia Gelfi
- Department of Biomedical Sciences for Health, University of Milan, Via Luigi Mangiagalli 31, 20133 Milan, Italy; (D.C.); (M.M.); (P.B.); (C.G.)
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161 Milan, Italy;
| | - Michele Salanova
- Institute of Integrative Neuroanatomy, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10115 Berlin, Germany; (D.B.); (G.T.); (I.V.)
- Center of Space Medicine Berlin, 10115 Berlin, Germany; (G.G.); (K.B.)
- Correspondence: ; Tel.: +49-30-450528-354; Fax: +49-30-4507528-062
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