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Rajendran S, Barbon S, Pucciarelli S. Spotlight on Circadian Genes and Colorectal Cancer Crosstalk. Endocr Metab Immune Disord Drug Targets 2020; 21:4-11. [PMID: 32579510 DOI: 10.2174/1871530320666200624192517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/19/2020] [Accepted: 04/22/2020] [Indexed: 11/22/2022]
Abstract
Mammalian physiology is regulated by circadian clock through oscillating feedback loops controlling cellular processes and behaviors. Recent findings have led to an interesting connection between circadian disruption and colorectal cancer progression and incidence through controlling the hallmarks of cancer, namely cell cycle, cell metabolism and cell death. Deeper understanding of the circadian mechanisms that define the colorectal cancer pathophysiology is the need of the hour to define a chronotherapy for improving colorectal cancer patient survival. This review identifies the key areas in which circadian genes interact with cellular pathways to modify the outcome with respect to colorectal cancer incidence and progression.
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Affiliation(s)
| | - Silvia Barbon
- Department of Neurosciences, University of Padova, Padua, Italy
| | - Salvatore Pucciarelli
- Department of Surgery Oncology and Gastroenterology, University of Padova, Padua, Italy
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2
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Murakami M, Tognini P. The Circadian Clock as an Essential Molecular Link Between Host Physiology and Microorganisms. Front Cell Infect Microbiol 2020; 9:469. [PMID: 32039048 PMCID: PMC6987142 DOI: 10.3389/fcimb.2019.00469] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
Advances in high-throughput sequencing technologies in the past decade has led to a tremendous growth in knowledge about the role played by microorganisms on our body health. Trillions of microbes live in close symbiosis with their host, and have impacts on various aspects of host physiology as well as predisposition to disease. This is a consequence of the direct interaction between host cells and microbes or their signaling molecules, such as metabolites, which can reach and exert their effects in distal tissues. Among the essential factors modulating the human body's ecosystem of symbionts, the circadian clock might be one of the key regulators. The endogenous clock is a highly conserved timekeeper able to align organismal physiology to the daily cycle, thus maximizing survival and fitness. Circadian rhythms coordinate whole-body biological processes synchronizing cellular biochemical reactions, tissue function and finally controlling systemic homeostasis. Intriguingly, growing body of evidence has demonstrated that the host circadian cycle governs the structure of the gut microbiota community and its diurnal rhythmicity, whereas the microbes contribute to maintenance of clock function. In this review, we will give an overview of the multisystem aspects of microbiome-host interactions in the context of circadian rhythmicity. In particular, the effect of the interaction clock-microbial communities on immune system function and metabolic homeostasis will be discussed. Finally, the possible implication of daily rhythm on the gut-microbiome-brain axis will be analyzed, focusing on the reciprocal effects of clock disruption and microbiota alterations on brain function and behavior.
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Affiliation(s)
- Mari Murakami
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka, Japan.,WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Paola Tognini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.,Laboratory of Biology, Scuola Normale Superiore, Pisa, Italy
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Ribas-Latre A, Fekry B, Kwok C, Baumgartner C, Shivshankar S, Sun K, Chen Z, Eckel-Mahan K. Rosiglitazone reverses high fat diet-induced changes in BMAL1 function in muscle, fat, and liver tissue in mice. Int J Obes (Lond) 2019; 43:567-580. [PMID: 29795456 PMCID: PMC6351224 DOI: 10.1038/s41366-018-0090-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/19/2018] [Accepted: 03/12/2018] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Nutrient challenge in the form of a high fat (HF) diet causes a reversible reprogramming of the hepatic circadian clock. This depends in part on changes in the recruitment of the circadian transcription factor BMAL1 to genome targets, though the causes and extent of disruption to hepatic and extra-hepatic BMAL1 are unknown. The objective of the study was to determine whether HF diet-induced alterations in BMAL1 function occur across insulin-resistant tissues and whether this could be reversed by restoring whole body insulin sensitivity. METHODS BMAL1 subcellular localization and target recruitment was analyzed in several metabolically active peripheral tissues, including liver, muscle, and adipose tissue under conditions of diet-induced obesity. Animals made obese with HF diet were subsequently treated with rosiglitazone to determine whether resensitizing insulin-resistant tissues to insulin restored hepatic and extra-hepatic BMAL1 function. RESULTS These data reveal that both hepatic and extra-hepatic BMAL1 activity are altered under conditions of obesity and insulin resistance. Restoring whole body insulin sensitivity by treatment with the antidiabetic drug rosiglitazone is sufficient to restore changes in HF diet-induced BMAL1 recruitment and activity in several tissues. CONCLUSIONS This study reveals that a key mechanism by which HF diet interferes with clock function in peripheral tissues is via the development of insulin resistance.
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Affiliation(s)
- Aleix Ribas-Latre
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Baharan Fekry
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Christopher Kwok
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Corrine Baumgartner
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Samay Shivshankar
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Kai Sun
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
- Program of Biochemistry and Cell Biology, The Graduate School of Biomedical Sciences at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Zheng Chen
- Department of Biochemistry and Molecular Biology, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA
| | - Kristin Eckel-Mahan
- The Brown Foundation Institute of Molecular Medicine, McGovern Medical School at the University of Texas Health Science Center, Houston, TX, 77030, USA.
- Program of Biochemistry and Cell Biology, The Graduate School of Biomedical Sciences at the University of Texas Health Science Center, Houston, TX, 77030, USA.
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de Anda-Jáuregui G, Espinal-Enriquez J, Hernández-Lemus E. Spatial Organization of the Gene Regulatory Program: An Information Theoretical Approach to Breast Cancer Transcriptomics. ENTROPY 2019; 21:e21020195. [PMID: 33266910 PMCID: PMC7514677 DOI: 10.3390/e21020195] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 02/06/2023]
Abstract
Gene regulation may be studied from an information-theoretic perspective. Gene regulatory programs are representations of the complete regulatory phenomenon associated to each biological state. In diseases such as cancer, these programs exhibit major alterations, which have been associated with the spatial organization of the genome into chromosomes. In this work, we analyze intrachromosomal, or cis-, and interchromosomal, or trans-gene regulatory programs in order to assess the differences that arise in the context of breast cancer. We find that using information theoretic approaches, it is possible to differentiate cis-and trans-regulatory programs in terms of the changes that they exhibit in the breast cancer context, indicating that in breast cancer there is a loss of trans-regulation. Finally, we use these programs to reconstruct a possible spatial relationship between chromosomes.
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Affiliation(s)
- Guillermo de Anda-Jáuregui
- Computational Genomics Division, National Institute of Genomic Medicine, Tlalpan 14610, Ciudad de México, Mexico
| | - Jesús Espinal-Enriquez
- Computational Genomics Division, National Institute of Genomic Medicine, Tlalpan 14610, Ciudad de México, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Coyoacan 04510, Ciudad de México, Mexico
| | - Enrique Hernández-Lemus
- Computational Genomics Division, National Institute of Genomic Medicine, Tlalpan 14610, Ciudad de México, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Coyoacan 04510, Ciudad de México, Mexico
- Correspondence:
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Faria GS, Varela SAM, Gardner A. The social evolution of sleep: sex differences, intragenomic conflicts and clinical pathologies. Proc Biol Sci 2019; 286:20182188. [PMID: 30963856 PMCID: PMC6367171 DOI: 10.1098/rspb.2018.2188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022] Open
Abstract
Sleep appears to be essential for most animals, including humans. Accordingly, individuals who sacrifice sleep are expected to incur costs and so should only be evolutionarily favoured to do this when these costs are offset by other benefits. For instance, a social group might benefit from having some level of wakefulness during the sleeping period if this guards against possible threats. Alternatively, individuals might sacrifice sleep in order to gain an advantage over mate competitors. Here, we perform a theoretical analysis of the social evolutionary pressures that drive investment into sleep versus wakefulness. Specifically, we: investigate how relatedness between social partners may modulate sleeping strategies, depending upon whether sleep sacrifice is selfish or altruistic; determine the conditions under which the sexes are favoured to adopt different sleeping strategies; identify the potential for intragenomic conflict between maternal-origin versus paternal-origin genes regarding an individual's sleeping behaviour; translate this conflict into novel and readily testable predictions concerning patterns of gene expression; and explore the concomitant effects of different kinds of mutations, epimutations, and uniparental disomies in relation to sleep disorders and other clinical pathologies. Our aim is to provide a theoretical framework for future empirical data and stimulate further research on this neglected topic.
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Affiliation(s)
- Gonçalo S. Faria
- School of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK
| | - Susana A. M. Varela
- Instituto Gulbenkian de Ciência, 6 Rua da Quinta Grande, 2780-156 Oeiras, Portugal
- cE3c – Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Andy Gardner
- School of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK
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Dyar KA, Eckel-Mahan KL. Circadian Metabolomics in Time and Space. Front Neurosci 2017; 11:369. [PMID: 28744188 PMCID: PMC5504240 DOI: 10.3389/fnins.2017.00369] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 06/13/2017] [Indexed: 12/11/2022] Open
Abstract
Circadian rhythms are widely known to govern human health and disease, but specific pathogenic mechanisms linking circadian disruption to metabolic diseases are just beginning to come to light. This is thanks in part to the development and application of various "omics"-based tools in biology and medicine. Current high-throughput technologies allow for the simultaneous monitoring of multiple dynamic cellular events over time, ranging from gene expression to metabolite abundance and sub-cellular localization. These fundamental temporal and spatial perspectives have allowed for a more comprehensive understanding of how various dynamic cellular events and biochemical processes are related in health and disease. With advances in technology, metabolomics has become a more routine "omics" approach for studying metabolism, and "circadian metabolomics" (i.e., studying the 24-h metabolome) has recently been undertaken by several groups. To date, circadian metabolomes have been reported for human serum, saliva, breath, and urine, as well as tissues from several species under specific disease or mutagenesis conditions. Importantly, these studies have consistently revealed that 24-h rhythms are prevalent in almost every tissue and metabolic pathway. Furthermore, these circadian rhythms in tissue metabolism are ultimately linked to and directed by internal 24-h biological clocks. In this review, we will attempt to put these data-rich circadian metabolomics experiments into perspective to find out what they can tell us about metabolic health and disease, and what additional biomarker potential they may reveal.
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Affiliation(s)
- Kenneth A Dyar
- Molecular Endocrinology, Institute for Diabetes and Obesity, Helmholtz Diabetes Center (HMGU) and German Center for Diabetes Research (DZD)Munich, Germany
| | - Kristin L Eckel-Mahan
- Brown Foundation of Molecular Medicine for the Prevention of Human Diseases of McGovern Medical School, University of Texas Health Science Center at HoustonHouston, TX, United States
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Morales-Lara D, De-la-Peña C, Murillo-Rodríguez E. Dad's Snoring May Have Left Molecular Scars in Your DNA: the Emerging Role of Epigenetics in Sleep Disorders. Mol Neurobiol 2017; 55:2713-2724. [PMID: 28155201 DOI: 10.1007/s12035-017-0409-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/13/2017] [Indexed: 12/16/2022]
Abstract
The sleep-wake cycle is a biological phenomena under the orchestration of neurophysiological, neurochemical, neuroanatomical, and genetical mechanisms. Moreover, homeostatic and circadian processes participate in the regulation of sleep across the light-dark period. Further complexity of the understanding of the genesis of sleep engages disturbances which have been characterized and classified in a variety of sleep-wake cycle disorders. The most prominent sleep alterations include insomnia as well as excessive daytime sleepiness. On the other side, several human diseases have been linked with direct changes in DNA, such as chromatin configuration, genomic imprinting, DNA methylation, histone modifications (acetylation, methylation, ubiquitylation or sumoylation, etc.), and activating RNA molecules that are transcribed from DNA but not translated into proteins. Epigenetic theories primarily emphasize the interaction between the environment and gene expression. According to these approaches, the environment to which mammals are exposed has a significant role in determining the epigenetic modifications occurring in chromosomes that ultimately would influence not only development but also the descendants' physiology and behavior. Thus, what makes epigenetics intriguing is that, unlike genetic variation, modifications in DNA are altered directly by the environment and, in some cases, these epigenetic changes may be inherited by future generations. Thus, it is likely that epigenetic phenomena might contribute to the homeostatic and/or circadian control of sleep and, possibly, have an undescribed link with sleep disorders. An exciting new horizon of research is arising between sleep and epigenetics since it represents the relevance of the study of how the genome learns from its experiences and modulates behavior, including sleep.
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Affiliation(s)
- Daniela Morales-Lara
- Laboratorio de Neurociencias Moleculares e Integrativas, Escuela de Medicina, División Ciencias de la Salud, Universidad Anáhuac Mayab, Carretera Mérida-Progreso Km. 15.5, A.P. 96 Cordemex, C.P. 97310, Mérida, Yucatán, Mexico.,Grupo de Investigación en Envejecimiento, División Ciencias de la Salud, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico.,Intercontinental Neuroscience Research Group, Mérida, Yucatán, Mexico
| | - Clelia De-la-Peña
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, A.C, Mérida, Yucatán, Mexico
| | - Eric Murillo-Rodríguez
- Laboratorio de Neurociencias Moleculares e Integrativas, Escuela de Medicina, División Ciencias de la Salud, Universidad Anáhuac Mayab, Carretera Mérida-Progreso Km. 15.5, A.P. 96 Cordemex, C.P. 97310, Mérida, Yucatán, Mexico. .,Grupo de Investigación en Envejecimiento, División Ciencias de la Salud, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico. .,Intercontinental Neuroscience Research Group, Mérida, Yucatán, Mexico. .,Grupo de Investigación Desarrollos Tecnológicos para la Salud, División de Ingeniería y Ciencias Exactas, Universidad Anáhuac Mayab, Mérida, Yucatán, Mexico.
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