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Sikorski V, Karjalainen P, Blokhina D, Oksaharju K, Khan J, Katayama S, Rajala H, Suihko S, Tuohinen S, Teittinen K, Nummi A, Nykänen A, Eskin A, Stark C, Biancari F, Kiss J, Simpanen J, Ropponen J, Lemström K, Savinainen K, Lalowski M, Kaarne M, Jormalainen M, Elomaa O, Koivisto P, Raivio P, Bäckström P, Dahlbacka S, Syrjälä S, Vainikka T, Vähäsilta T, Tuncbag N, Karelson M, Mervaala E, Juvonen T, Laine M, Laurikka J, Vento A, Kankuri E. Epitranscriptomics of Ischemic Heart Disease-The IHD-EPITRAN Study Design and Objectives. Int J Mol Sci 2021; 22:6630. [PMID: 34205699 PMCID: PMC8235045 DOI: 10.3390/ijms22126630] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 12/11/2022] Open
Abstract
Epitranscriptomic modifications in RNA can dramatically alter the way our genetic code is deciphered. Cells utilize these modifications not only to maintain physiological processes, but also to respond to extracellular cues and various stressors. Most often, adenosine residues in RNA are targeted, and result in modifications including methylation and deamination. Such modified residues as N-6-methyl-adenosine (m6A) and inosine, respectively, have been associated with cardiovascular diseases, and contribute to disease pathologies. The Ischemic Heart Disease Epitranscriptomics and Biomarkers (IHD-EPITRAN) study aims to provide a more comprehensive understanding to their nature and role in cardiovascular pathology. The study hypothesis is that pathological features of IHD are mirrored in the blood epitranscriptome. The IHD-EPITRAN study focuses on m6A and A-to-I modifications of RNA. Patients are recruited from four cohorts: (I) patients with IHD and myocardial infarction undergoing urgent revascularization; (II) patients with stable IHD undergoing coronary artery bypass grafting; (III) controls without coronary obstructions undergoing valve replacement due to aortic stenosis and (IV) controls with healthy coronaries verified by computed tomography. The abundance and distribution of m6A and A-to-I modifications in blood RNA are charted by quantitative and qualitative methods. Selected other modified nucleosides as well as IHD candidate protein and metabolic biomarkers are measured for reference. The results of the IHD-EPITRAN study can be expected to enable identification of epitranscriptomic IHD biomarker candidates and potential drug targets.
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Affiliation(s)
- Vilbert Sikorski
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (V.S.); (D.B.); (E.M.)
| | - Pasi Karjalainen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Daria Blokhina
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (V.S.); (D.B.); (E.M.)
| | - Kati Oksaharju
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Jahangir Khan
- Tampere Heart Hospital, Tampere University Hospital, 33520 Tampere, Finland; (J.K.); (J.L.)
| | | | - Helena Rajala
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Satu Suihko
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Suvi Tuohinen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Kari Teittinen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Annu Nummi
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Antti Nykänen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Arda Eskin
- Graduate School of Informatics, Department of Health Informatics, Middle East Technical University, 06800 Ankara, Turkey;
| | - Christoffer Stark
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Fausto Biancari
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
- Heart Center, Turku University Hospital and Department of Surgery, University of Turku, 20521 Turku, Finland
- Research Unit of Surgery, Anesthesiology and Critical Care, University of Oulu, 90014 Oulu, Finland
| | - Jan Kiss
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Jarmo Simpanen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Jussi Ropponen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Karl Lemström
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Kimmo Savinainen
- Clinical Biobank Tampere, Tampere University Hospital, 33520 Tampere, Finland;
| | - Maciej Lalowski
- Helsinki Institute of Life Science (HiLIFE), Meilahti Clinical Proteomics Core Facility, Department of Biochemistry and Developmental Biology, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland;
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Department of Biomedical Proteomics, 61-704 Poznan, Poland
| | - Markku Kaarne
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Mikko Jormalainen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Outi Elomaa
- Folkhälsan Research Center, 00250 Helsinki, Finland; (S.K.); (O.E.)
| | - Pertti Koivisto
- Chemistry Unit, Finnish Food Authority, 00790 Helsinki, Finland;
| | - Peter Raivio
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Pia Bäckström
- Helsinki Biobank, Hospital District of Helsinki and Uusimaa, 00029 Helsinki, Finland;
| | - Sebastian Dahlbacka
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Simo Syrjälä
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Tiina Vainikka
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Tommi Vähäsilta
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Nurcan Tuncbag
- Department of Chemical and Biological Engineering, College of Engineering, Koç University, 34450 Istanbul, Turkey;
- School of Medicine, Koç University, 34450 Istanbul, Turkey
| | - Mati Karelson
- Institute of Chemistry, University of Tartu, 50411 Tartu, Estonia;
| | - Eero Mervaala
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (V.S.); (D.B.); (E.M.)
| | - Tatu Juvonen
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
- Research Unit of Surgery, Anesthesiology and Critical Care, University of Oulu, 90014 Oulu, Finland
| | - Mika Laine
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Jari Laurikka
- Tampere Heart Hospital, Tampere University Hospital, 33520 Tampere, Finland; (J.K.); (J.L.)
| | - Antti Vento
- Heart and Lung Center, Helsinki University Hospital, 00029 Helsinki, Finland; (P.K.); (K.O.); (H.R.); (S.S.); (S.T.); (K.T.); (A.N.); (A.N.); (C.S.); (F.B.); (J.K.); (J.S.); (J.R.); (K.L.); (M.K.); (M.J.); (P.R.); (S.D.); (S.S.); (T.V.); (T.V.); (T.J.); (M.L.); (A.V.)
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland; (V.S.); (D.B.); (E.M.)
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Selberg S, Blokhina D, Aatonen M, Koivisto P, Siltanen A, Mervaala E, Kankuri E, Karelson M. Discovery of Small Molecules that Activate RNA Methylation through Cooperative Binding to the METTL3-14-WTAP Complex Active Site. Cell Rep 2020; 26:3762-3771.e5. [PMID: 30917327 DOI: 10.1016/j.celrep.2019.02.100] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 10/19/2018] [Accepted: 02/22/2019] [Indexed: 12/22/2022] Open
Abstract
Chemical modifications of RNA provide an additional, epitranscriptomic, level of control over cellular functions. N-6-methylated adenosines (m6As) are found in several types of RNA, and their amounts are regulated by methyltransferases and demethylases. One of the most important enzymes catalyzing generation of m6A on mRNA is the trimer N-6-methyltransferase METTL3-14-WTAP complex. Its activity has been linked to such critical biological processes as cell differentiation, proliferation, and death. We used in silico-based discovery to identify small-molecule ligands that bind to METTL3-14-WTAP and determined experimentally their binding affinity and kinetics, as well as their effect on enzymatic function. We show that these ligands serve as activators of the METTL3-14-WTAP complex.
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Affiliation(s)
- Simona Selberg
- Institute of Chemistry, University of Tartu, Tartu, Estonia
| | - Daria Blokhina
- Faculty of Medicine, Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - Maria Aatonen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Pertti Koivisto
- Organic Residues Section, Laboratory and Research Division, Chemistry Unit, Finnish Food Authority, Helsinki, Finland
| | - Antti Siltanen
- Faculty of Medicine, Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - Eero Mervaala
- Faculty of Medicine, Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - Esko Kankuri
- Faculty of Medicine, Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - Mati Karelson
- Institute of Chemistry, University of Tartu, Tartu, Estonia.
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Barmaki S, Jokinen V, Obermaier D, Blokhina D, Korhonen M, Ras RHA, Vuola J, Franssila S, Kankuri E. A microfluidic oxygen sink to create a targeted cellular hypoxic microenvironment under ambient atmospheric conditions. Acta Biomater 2018; 73:167-179. [PMID: 29649636 DOI: 10.1016/j.actbio.2018.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/28/2018] [Accepted: 04/03/2018] [Indexed: 12/12/2022]
Abstract
Physiological oxygen levels within the tissue microenvironment are usually lower than 14%, in stem cell niches these levels can be as low as 0-1%. In cell cultures, such low oxygen levels are usually mimicked by altering the global culture environment either by O2 removal (vacuum or oxygen absorption) or by N2 supplementation for O2 replacement. To generate a targeted cellular hypoxic microenvironment under ambient atmospheric conditions, we characterised the ability of the dissolved oxygen-depleting sodium sulfite to generate an in-liquid oxygen sink. We utilised a microfluidic design to place the cultured cells in the vertical oxygen gradient and to physically separate the cells from the liquid. We demonstrate generation of a chemical in-liquid oxygen sink that modifies the surrounding O2 concentrations. O2 level control in the sink-generated hypoxia gradient is achievable by varying the thickness of the polydimethylsiloxane membrane. We show that intracellular hypoxia and hypoxia response element-dependent signalling is instigated in cells exposed to the microfluidic in-liquid O2 sink-generated hypoxia gradient. Moreover, we show that microfluidic flow controls site-specific microenvironmental kinetics of the chemical O2 sink reaction, which enables generation of intermittent hypoxia/re-oxygenation cycles. The microfluidic O2 sink chip targets hypoxia to the cell culture microenvironment exposed to the microfluidic channel architecture solely by depleting O2 while other sites in the same culture well remain unaffected. Thus, responses of both hypoxic and bystander cells can be characterised. Moreover, control of microfluidic flow enables generation of intermittent hypoxia or hypoxia/re-oxygenation cycles. STATEMENT OF SIGNIFICANCE Specific manipulation of oxygen concentrations in cultured cells' microenvironment is important when mimicking low-oxygen tissue conditions and pathologies such as tissue infarction or cancer. We utilised a sodium sulfite-based in-liquid chemical reaction to consume dissolved oxygen. When this liquid was pumped into a microfluidic channel, lowered oxygen levels could be measured outside the channel through a polydimethylsiloxane PDMS membrane allowing only for gaseous exchange. We then utilised this setup to deplete oxygen from the microenvironment of cultured cells, and showed that cells responded to hypoxia on molecular level. Our setup can be used for specifically removing oxygen from the cell culture microenvironment for experimental purposes and for generating a low oxygen environment that better mimics the cells' original tissue environments.
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Affiliation(s)
- Samineh Barmaki
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Ville Jokinen
- Aalto University, School of Chemical Engineering, Department of Chemistry and Materials Science, Espoo, Finland
| | | | - Daria Blokhina
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Matti Korhonen
- Advanced Cell Therapy Centre, Finnish Red Cross Blood Service, Helsinki, Finland
| | - Robin H A Ras
- Aalto University, School of Chemical Engineering, Department of Chemistry and Materials Science, Espoo, Finland; Aalto University, School of Science, Department of Applied Physics, Espoo, Finland
| | - Jyrki Vuola
- Helsinki Burn Centre, Jorvi Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Sami Franssila
- Aalto University, School of Chemical Engineering, Department of Chemistry and Materials Science, Espoo, Finland
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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Lalowski MM, Björk S, Finckenberg P, Soliymani R, Tarkia M, Calza G, Blokhina D, Tulokas S, Kankainen M, Lakkisto P, Baumann M, Kankuri E, Mervaala E. Characterizing the Key Metabolic Pathways of the Neonatal Mouse Heart Using a Quantitative Combinatorial Omics Approach. Front Physiol 2018; 9:365. [PMID: 29695975 PMCID: PMC5904546 DOI: 10.3389/fphys.2018.00365] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/26/2018] [Indexed: 01/19/2023] Open
Abstract
The heart of a newborn mouse has an exceptional capacity to regenerate from myocardial injury that is lost within the first week of its life. In order to elucidate the molecular mechanisms taking place in the mouse heart during this critical period we applied an untargeted combinatory multiomics approach using large-scale mass spectrometry-based quantitative proteomics, metabolomics and mRNA sequencing on hearts from 1-day-old and 7-day-old mice. As a result, we quantified 1.937 proteins (366 differentially expressed), 612 metabolites (263 differentially regulated) and revealed 2.586 differentially expressed gene loci (2.175 annotated genes). The analyses pinpointed the fructose-induced glycolysis-pathway to be markedly active in 1-day-old neonatal mice. Integrated analysis of the data convincingly demonstrated cardiac metabolic reprogramming from glycolysis to oxidative phosphorylation in 7-days old mice, with increases of key enzymes and metabolites in fatty acid transport (acylcarnitines) and β-oxidation. An upsurge in the formation of reactive oxygen species and an increase in oxidative stress markers, e.g., lipid peroxidation, altered sphingolipid and plasmalogen metabolism were also evident in 7-days mice. In vitro maintenance of physiological fetal hypoxic conditions retained the proliferative capacity of cardiomyocytes isolated from newborn mice hearts. In summary, we provide here a holistic, multiomics view toward early postnatal changes associated with loss of a tissue regenerative capacity in the neonatal mouse heart. These results may provide insight into mechanisms of human cardiac diseases associated with tissue regenerative incapacity at the molecular level, and offer a prospect to discovery of novel therapeutic targets.
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Affiliation(s)
- Maciej M Lalowski
- Department of Biochemistry, Department of Developmental Biology, Faculty of Medicine, Helsinki Institute of Life Science (HiLIFE) and Medicum, Meilahti Clinical Proteomics Core Facility, University of Helsinki, Helsinki, Finland
| | - Susann Björk
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Piet Finckenberg
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Rabah Soliymani
- Department of Biochemistry, Department of Developmental Biology, Faculty of Medicine, Helsinki Institute of Life Science (HiLIFE) and Medicum, Meilahti Clinical Proteomics Core Facility, University of Helsinki, Helsinki, Finland
| | - Miikka Tarkia
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Giulio Calza
- Department of Biochemistry, Department of Developmental Biology, Faculty of Medicine, Helsinki Institute of Life Science (HiLIFE) and Medicum, Meilahti Clinical Proteomics Core Facility, University of Helsinki, Helsinki, Finland
| | - Daria Blokhina
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Sari Tulokas
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Matti Kankainen
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland.,Medical and Clinical Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Päivi Lakkisto
- Medicum, Department of Clinical Chemistry and Hematology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Marc Baumann
- Department of Biochemistry, Department of Developmental Biology, Faculty of Medicine, Helsinki Institute of Life Science (HiLIFE) and Medicum, Meilahti Clinical Proteomics Core Facility, University of Helsinki, Helsinki, Finland
| | - Esko Kankuri
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
| | - Eero Mervaala
- Medicum, Department of Pharmacology, Faculty of Medicine, PB63, University of Helsinki, Helsinki, Finland
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