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Sánchez-Jasso DE, López-Guzmán SF, Bermúdez-Cruz RM, Oviedo N. Novel Aspects of cAMP-Response Element Modulator (CREM) Role in Spermatogenesis and Male Fertility. Int J Mol Sci 2023; 24:12558. [PMID: 37628737 PMCID: PMC10454534 DOI: 10.3390/ijms241612558] [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: 06/30/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Spermatogenesis is a very complex process with an intricate transcriptional regulation. The transition from the diploid to the haploid state requires the involvement of specialized genes in meiosis, among other specific functions for the formation of the spermatozoon. The transcription factor cAMP-response element modulator (CREM) is a key modulator that triggers the differentiation of the germ cell into the spermatozoon through the modification of gene expression. CREM has multiple repressor and activator isoforms whose expression is tissue-cell-type specific and tightly regulated by various factors at the transcriptional, post-transcriptional and post-translational level. The activator isoform CREMτ controls the expression of several relevant genes in post-meiotic stages of spermatogenesis. In addition, exposure to xenobiotics negatively affects CREMτ expression, which is linked to male infertility. On the other hand, antioxidants could have a positive effect on CREMτ expression and improve sperm parameters in idiopathically infertile men. Therefore, CREM expression could be used as a biomarker to detect and even counteract male infertility. This review examines the importance of CREM as a transcription factor for sperm production and its relevance in male fertility, infertility and the response to environmental xenobiotics that may affect CREMτ expression and the downstream regulation that alters male fertility. Also, some health disorders in which CREM expression is altered are discussed.
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Affiliation(s)
- Diego Eduardo Sánchez-Jasso
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Sergio Federico López-Guzmán
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Rosa Maria Bermúdez-Cruz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Norma Oviedo
- Unidad de Investigación Médica en Immunología e Infectología, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social (IMSS), Mexico City 02990, Mexico
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Awaad AK, Kamel MA, Mohamed MM, Helmy MH, Youssef MI, Zaki EI, Essawy MM, Hegazy MGA. The role of hepatic transcription factor cAMP response element-binding protein (CREB) during the development of experimental nonalcoholic fatty liver: a biochemical and histomorphometric study. EGYPTIAN LIVER JOURNAL 2020. [DOI: 10.1186/s43066-020-00046-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Abstract
Background
Several molecular mechanisms contribute to the initiation and progression of nonalcoholic fatty liver disease (NAFLD); however, the exact mechanism is not completely understood. Cyclic adenosine monophosphate (cAMP) is one of the most promising pathways that regulates various cellular functions including lipid and carbohydrate metabolism. cAMP induces gene transcription through phosphorylation of the transcription factor, cAMP response element-binding protein (CREB). The action of cAMP is tightly regulated by its level and repression. Among the repressors, Inducible cAMP Early Repressor (ICER) is the only inducible CRE-binding protein. The present study aimed to evaluate the role of hepatic CREB level in the development of experimental NAFLD model to clarify the pathogenesis of the disease. NAFLD 35 male Wistar rats fed a high fat diet for a period of 14 weeks were studied compared with 35 control rats fed a standard diet. Five fasting rats were sacrificed each 2 weeks intervals for a period of 14 weeks.
Results
NAFLD group revealed a remarkable duration—dependent elevation in cAMP and CREB levels in the liver tissue compared to control group (P value < 0.004, P value < 0.006, respectively). In contrast, ICER gene expression, as a dominant-negative regulator of CREB, was downregulated in the liver of NAFLD group compared to control group. We also demonstrated that CREB levels were positively correlated with liver function tests, and glucose homeostasis parameters.
Conclusions
Our results indicate that cAMP/CREB pathway provides an early signal in the progression to NAFLD representing a noninvasive biomarker that can early detect NAFLD and a promising therapeutic target for the treatment of the disease as well.
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Režen T, Zmrzljak UP, Bensa T, Tomaš TC, Cirnski K, Stojan J, Rozman D. Novel insights into biological roles of inducible cAMP early repressor ICER. Biochem Biophys Res Commun 2020; 530:396-401. [PMID: 32534736 DOI: 10.1016/j.bbrc.2020.05.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/03/2020] [Indexed: 11/16/2022]
Abstract
ICER corresponds to a group of alternatively spliced Inducible cAMP Early Repressors with high similarity, but multiple roles, including in circadian rhythm, and are involved in attenuation of cAMP-dependent gene expression. We present experimental and in silico data revealing biological differences between the isoforms with exon gamma (ICER) or without it (ICERγ). Both isoforms are expressed in the liver and the adrenal glands and can derive from differential splicing. In adrenals the expression is circadian, with maximum at ZT12 and higher amplitude of Icerγ. In the liver, the expression of Icerγ is lower than Icer in the 24 h time frame. Icer mRNA has a delayed early response to forskolin. The longer ICER protein binds to three DNA grooves of the Per1 promoter, while ICERγ only to two, as deduced by molecular modelling. This is in line with gel shift competition assays showing stronger binding of ICER to Per1 promotor. Only Icerγ siRNA provoked an increase of Per1 expression. In conclusion, we show that ICER and ICERγ have distinct biochemical properties in tissue expression, DNA binding, and response to forskolin. Data are in favour of ICERγ as the physiologically important form in hepatic cells where weaker binding of repressor might be preferred in guiding the cAMP-dependent response.
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Affiliation(s)
- Tadeja Režen
- Centre for Functional Genomics and Bio-Chip, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Uršula Prosenc Zmrzljak
- Centre for Functional Genomics and Bio-Chip, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Tjaša Bensa
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Tanja Cvitanović Tomaš
- Centre for Functional Genomics and Bio-Chip, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Katarina Cirnski
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Jure Stojan
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Damjana Rozman
- Centre for Functional Genomics and Bio-Chip, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Slovenia.
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Bezlyudna AS, Pustovalov AS, Matvienko MG, Dzerzhinskii NE. Effects of the α-Adrenergic, Kisspeptinergic, and Melatonin Systems on the Morphofunctional State of Cells of the Adrenal Cortex in Mature Rats. NEUROPHYSIOLOGY+ 2017. [DOI: 10.1007/s11062-017-9637-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sánchez-Bretaño A, Blanco AM, Alonso-Gómez ÁL, Delgado MJ, Kah O, Isorna E. Ghrelin induces clock gene expression in the liver of goldfish in vitro via protein kinase C and protein kinase A pathways. ACTA ACUST UNITED AC 2017; 220:1295-1306. [PMID: 28126833 DOI: 10.1242/jeb.144253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 01/23/2017] [Indexed: 01/02/2023]
Abstract
The liver is the most important link between the circadian system and metabolism. As a food-entrainable oscillator, the hepatic clock needs to be entrained by food-related signals. The objective of the present study was to investigate the possible role of ghrelin (an orexigenic peptide mainly synthesized in the gastrointestinal tract) as an endogenous synchronizer of the liver oscillator in teleosts. To achieve this aim, we first examined the presence of ghrelin receptors in the liver of goldfish. Then, the ghrelin regulation of clock gene expression in the goldfish liver was studied. Finally, the possible involvement of the phospholipase C/protein kinase C (PLC/PKC) and adenylate cyclase/protein kinase A (AC/PKA) intracellular signalling pathways was investigated. Ghrelin receptor transcripts, ghs-r1a, are present in the majority of goldfish hepatic cells. Ghrelin induced the mRNA expression of the positive (gbmal1a, gclock1a) and negative (gper genes) elements of the main loop of the molecular clock machinery, as well as grev-erbα (auxiliary loop) in cultured liver. These effects were blocked, at least in part, by a ghrelin antagonist. Incubation of liver with a PLC inhibitor (U73122), a PKC activator (phorbol 12-myristate 13-acetate) and a PKC inhibitor (chelerythrine chloride) demonstrated that the PLC/PKC pathway mediates such ghrelin actions. Experiments with an AC activator (forskolin) and a PKA inhibitor (H89) showed that grev-erbα regulation could be due to activation of PKA. Taken together, the present results show for the first time in vertebrates a direct action of ghrelin on hepatic clock genes and support a role for this hormone as a temporal messenger in the entrainment of liver circadian functions.
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Affiliation(s)
- Aída Sánchez-Bretaño
- Animal Physiology Department, Faculty of Biology, Complutense University of Madrid, Madrid 28040, Spain
| | - Ayelén M Blanco
- Animal Physiology Department, Faculty of Biology, Complutense University of Madrid, Madrid 28040, Spain
| | - Ángel L Alonso-Gómez
- Animal Physiology Department, Faculty of Biology, Complutense University of Madrid, Madrid 28040, Spain
| | - María J Delgado
- Animal Physiology Department, Faculty of Biology, Complutense University of Madrid, Madrid 28040, Spain
| | - Olivier Kah
- Neuroendocrine Effects of Endocrine Disruptors, Inserm (Research Institute for Health, Environment and Occupation, IRSET, INSERM U1085), SFR Biosit Université de Rennes 1, 35000 Rennes, France
| | - Esther Isorna
- Animal Physiology Department, Faculty of Biology, Complutense University of Madrid, Madrid 28040, Spain
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Rawashdeh O, Jilg A, Maronde E, Fahrenkrug J, Stehle JH. Period1gates the circadian modulation of memory-relevant signaling in mouse hippocampus by regulating the nuclear shuttling of the CREB kinase pP90RSK. J Neurochem 2016; 138:731-45. [DOI: 10.1111/jnc.13689] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Oliver Rawashdeh
- Institute of Cellular and Molecular Anatomy; Dr. Senckenbergische Anatomie; Goethe-University; Frankfurt Germany
- School of Biomedical Sciences; University of Queensland; St Lucia Qld Australia
| | - Antje Jilg
- Institute of Cellular and Molecular Anatomy; Dr. Senckenbergische Anatomie; Goethe-University; Frankfurt Germany
| | - Erik Maronde
- Institute of Cellular and Molecular Anatomy; Dr. Senckenbergische Anatomie; Goethe-University; Frankfurt Germany
| | - Jan Fahrenkrug
- Department of Clinical Chemistry; Bispebjerg Hospital, Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - Jörg H. Stehle
- Institute of Cellular and Molecular Anatomy; Dr. Senckenbergische Anatomie; Goethe-University; Frankfurt Germany
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Ella E, Heim D, Stoyanov E, Harari-Steinfeld R, Steinfeld I, Pappo O, Perlman TS, Nachmansson N, Rivkin L, Olam D, Abramovitch R, Wege H, Galun E, Goldenberg D. Specific genomic and transcriptomic aberrations in tumors induced by partial hepatectomy of a chronically inflamed murine liver. Oncotarget 2014; 5:10318-31. [PMID: 25401338 PMCID: PMC4279375 DOI: 10.18632/oncotarget.2515] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Accepted: 09/24/2014] [Indexed: 11/25/2022] Open
Abstract
Resection of hepatocellular carcinoma (HCC) tumors by partial hepatectomy (PHx) is associated with promoting hepatocarcinogenesis. We have previously reported that PHx promotes hepatocarcinogenesis in the Mdr2-knockout (Mdr2-KO) mouse, a model for inflammation-mediated HCC. Now, to explore the molecular mechanisms underlying the tumor-promoting effect of PHx, we compared genomic and transcriptomic profiles of HCC tumors developing in the Mdr2-KO mice either spontaneously or following PHx. PHx accelerated HCC development in these mice by four months. PHx-induced tumors had major chromosomal aberrations: all were amplifications affecting multiple chromosomes. Most of these amplifications were located near the acrocentric centromeres of murine chromosomes. Four different chromosomal regions were amplified each in at least three tumors. The human orthologs of these common amplified regions are known to be amplified in HCC. All tumors of untreated mice had chromosomal aberrations, including both deletions and amplifications. Amplifications in spontaneous tumors affected fewer chromosomes and were not located preferentially at the chromosomal edges. Comparison of gene expression profiles revealed a significantly enriched expression of oncogenes, chromosomal instability markers and E2F1 targets in the post-PHx compared to spontaneous tumors. Both tumor groups shared the same frequent amplification at chromosome 18. Here, we revealed that one of the regulatory genes encoded by this amplified region, Crem, was over-expressed in the nuclei of murine and human HCC cells in vivo, and that it stimulated proliferation of human HCC cells in vitro. Our results demonstrate that PHx of a chronically inflamed liver directed tumor development to a discrete pathway characterized by amplification of specific chromosomal regions and expression of specific tumor-promoting genes. Crem is a new candidate HCC oncogene frequently amplified in this model and frequently over-expressed in human HCC.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/genetics
- Animals
- Carcinogenesis/genetics
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/surgery
- Cell Line, Tumor
- Chromosome Aberrations
- Chromosomes, Human, Pair 18/genetics
- Cyclic AMP Response Element Modulator/genetics
- Cyclic AMP Response Element Modulator/metabolism
- Disease Models, Animal
- E2F1 Transcription Factor/genetics
- E2F1 Transcription Factor/metabolism
- Gene Amplification
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Hepatectomy
- Hepatitis, Chronic/genetics
- Hepatitis, Chronic/surgery
- Humans
- Liver Neoplasms/genetics
- Liver Neoplasms/surgery
- Mice
- Mice, Knockout
- Postoperative Complications/genetics
- Up-Regulation
- ATP-Binding Cassette Sub-Family B Member 4
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Affiliation(s)
- Ezra Ella
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Denise Heim
- Department of Gastroenterology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Evgeniy Stoyanov
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Rona Harari-Steinfeld
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Israel Steinfeld
- Computer Science Department, Technion-Israel Institute of Technology, Haifa, Israel
| | - Orit Pappo
- Department of Pathology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Temima Schnitzer Perlman
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Natalie Nachmansson
- Magnetic Resonance Imaging/Magnetic Resonance Spectroscopy Laboratory, Human Biology Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Ludmila Rivkin
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Devorah Olam
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Rinat Abramovitch
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
- Magnetic Resonance Imaging/Magnetic Resonance Spectroscopy Laboratory, Human Biology Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Henning Wege
- Department of Gastroenterology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Eithan Galun
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Daniel Goldenberg
- The Goldyne Savad Institute of Gene Therapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Salvi R, Abderrahmani A. Decompensation of β-cells in diabetes: when pancreatic β-cells are on ICE(R). J Diabetes Res 2014; 2014:768024. [PMID: 24672804 PMCID: PMC3941242 DOI: 10.1155/2014/768024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 01/03/2014] [Indexed: 01/05/2023] Open
Abstract
Insulin production and secretion are temporally regulated. Keeping insulin secretion at rest after a rise of glucose prevents exhaustion and ultimately failure of β-cells. Among the mechanisms that reduce β-cell activity is the inducible cAMP early repressor (ICER). ICER is an immediate early gene, which is rapidly induced by the cyclic AMP (cAMP) signaling cascade. The seminal function of ICER is to negatively regulate the production and secretion of insulin by repressing the genes expression. This is part of adaptive response required for proper β-cells function in response to environmental factors. Inappropriate induction of ICER accounts for pancreatic β-cells dysfunction and ultimately death elicited by chronic hyperglycemia, fatty acids, and oxidized LDL. This review underlines the importance of balancing the negative regulation achieved by ICER for preserving β-cell function and survival in diabetes.
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Affiliation(s)
- Roberto Salvi
- European Genomic Institute for Diabetes (EGID), Lille 2 University, UMR 8199, 3508 Lille, France
| | - Amar Abderrahmani
- European Genomic Institute for Diabetes (EGID), Lille 2 University, UMR 8199, 3508 Lille, France
- Faculty of Medicine West, 1 Place de Verdun, 59045 Lille, France
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Urlep Z, Rozman D. The Interplay between Circadian System, Cholesterol Synthesis, and Steroidogenesis Affects Various Aspects of Female Reproduction. Front Endocrinol (Lausanne) 2013; 4:111. [PMID: 24065951 PMCID: PMC3778439 DOI: 10.3389/fendo.2013.00111] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 08/13/2013] [Indexed: 01/22/2023] Open
Abstract
Circadian aspect of reproduction has gained much attention in recent years. In mammals, it is very important that the timing of greatest sexual motivation is in line with the highest fertility. Peripheral clocks have been found to reside also in reproductive organs, such as the uterus and ovary. The timing signal from the suprachiasmatic nucleus is suggested to be transmitted via hormonal and neural mechanisms, and could thus mediate circadian expression of target genes in these organs. In turn, estrogens from the ovary have been found to signal back to the hypothalamus, completing the feedback loop. In this review we will focus on the interplay between clock and estrogens. Estradiol has been directly linked with expression of Per1 and Per2 in the uterus. CLOCK, on the other hand, has been shown to alter estradiol signaling. We also present the idea that cholesterol could play a vital role in the regulation of reproduction. Cholesterol synthesis itself is circadially regulated and has been found to interfere with steroidogenesis in the ovary on the molecular level. This review presents a systems view on how the interplay between circadian clock, steroidogenesis, and cholesterol synthesis affect various aspects of mammalian reproduction.
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Affiliation(s)
- Ziga Urlep
- Center for Functional Genomics and Bio-Chips, Institute for Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Damjana Rozman
- Center for Functional Genomics and Bio-Chips, Institute for Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- *Correspondence: Damjana Rozman, Center for Functional Genomics and Bio-Chips, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Zaloska 4, SI-1000 Ljubljana, Slovenia e-mail:
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