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Balit N, Cermakian N, Khadra A. The influence of circadian rhythms on CD8 + T cell activation upon vaccination: A mathematical modeling perspective. J Theor Biol 2024; 590:111852. [PMID: 38796098 DOI: 10.1016/j.jtbi.2024.111852] [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: 11/22/2023] [Revised: 03/30/2024] [Accepted: 05/14/2024] [Indexed: 05/28/2024]
Abstract
Circadian rhythms have been implicated in the modulation of many physiological processes, including those associated with the immune system. For example, these rhythms influence CD8+ T cell responses within the adaptive immune system. The mechanism underlying this immune-circadian interaction, however, remains unclear, particularly in the context of vaccination. Here, we devise a molecularly-explicit gene regulatory network model of early signaling in the naïve CD8+ T cell activation pathway, comprised of three axes (or subsystems) labeled ZAP70, LAT and CD28, to elucidate the molecular details of this immune-circadian mechanism and its relation to vaccination. This is done by coupling the model to a periodic forcing function to identify the molecular players targeted by circadian rhythms, and analyzing how these rhythms subsequently affect CD8+ T cell activation under differing levels of T cell receptor (TCR) phosphorylation, which we designate as vaccine load. By performing both bifurcation and parameter sensitivity analyses on the model at the single cell and ensemble levels, we find that applying periodic forcing on molecular targets within the ZAP70 axis is sufficient to create a day-night discrepancy in CD8+ T cell activation in a manner that is dependent on the bistable switch inherent in CD8+ T cell early signaling. We also demonstrate that the resulting CD8+ T cell activation is dependent on the strength of the periodic coupling as well as on the level of TCR phosphorylation. Our results show that this day-night discrepancy is not transmitted to certain downstream molecules within the LAT subsystem, such as mTORC1, suggesting a secondary, independent circadian regulation on that protein complex. We also corroborate experimental results by showing that the circadian regulation of CD8+ T cell primarily acts at a baseline, pre-vaccination state, playing a facilitating role in priming CD8+ T cells to vaccine inputs according to the time of day. By applying an ensemble level analysis using bifurcation theory and by including several hypothesized molecular targets of this circadian rhythm, we further demonstrate an increased variability between CD8+ T cells (due to heterogeneity) induced by its circadian regulation, which may allow an ensemble of CD8+ T cells to activate at a lower vaccine load, improving its sensitivity. This modeling study thus provides insights into the immune targets of the circadian clock, and proposes an interaction between vaccine load and the influence of circadian rhythms on CD8+ T cell activation.
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Affiliation(s)
- Nasri Balit
- Department of Physiology, McGill University, Montreal, Quebec, Canada.
| | - Nicolas Cermakian
- Douglas Research Center, Department of Psychiatry, McGill University, Montreal, Quebec, Canada.
| | - Anmar Khadra
- Department of Physiology, McGill University, Montreal, Quebec, Canada.
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2
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Zhou J, Wang H, Ouyang Q. Mathematical modeling of viral infection and the immune response controlled by the circadian clock. J Biol Phys 2024; 50:197-214. [PMID: 38641676 PMCID: PMC11106228 DOI: 10.1007/s10867-024-09655-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 03/16/2024] [Indexed: 04/21/2024] Open
Abstract
Time of day affects how well the immune system responds to viral or bacterial infections. While it is well known that the immune system is regulated by the circadian clock, the dynamic origin of time-of-day-dependent immunity remains unclear. In this paper, we studied the circadian control of immune response upon infection of influenza A virus through mathematical modeling. Dynamic simulation analyses revealed that the time-of-day-dependent immunity was rooted in the relative phase between the circadian clock and the pulse of viral infection. The relative phase, which depends on the time the infection occurs, plays a crucial role in the immune response. It can drive the immune system to one of two distinct bistable states, a high inflammatory state with a higher mortality rate or a safe state characterized by low inflammation. The mechanism we found here also explained why the same species infected by different viruses has different time-of-day-dependent immunities. Further, the time-of-day-dependent immunity was found to be abolished when the immune system was regulated by an impaired circadian clock with decreased oscillation amplitude or without oscillations.
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Affiliation(s)
- Jiaxin Zhou
- The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, China
| | - Hongli Wang
- The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, China.
- Center for Quantitative Biology, Peking University, Beijing, 100871, China.
| | - Qi Ouyang
- School of Physics, Zhejiang University, Hangzhou, 310027, China
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3
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da Mata GE, Bricola R, Ribeiro DN, Simabuco FM, Pauli JR, de Freitas EC, Ropelle ER, da Silva ASR, Pinto AP. Acute exercise modulates Trim63 and Bmal1 in the skeletal muscle of IL-10 knockout mice. Cytokine 2024; 175:156484. [PMID: 38159471 DOI: 10.1016/j.cyto.2023.156484] [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: 08/03/2023] [Revised: 11/10/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
The anti-inflammatory role of physical exercise is mediated by interleukin 10 (IL-10), and their release is possibly upregulated in response to IL-6. Previous studies demonstrated that mice lacking IL-6 (IL-6 KO mice) exhibited diminished exercise tolerance, and reduced strength. Rev-erbα, a transcriptional suppressor involved in circadian rhythm, has been discovered to inhibit the expression of genes linked to bodily functions, encompassing inflammation and metabolism. It also plays a significant role in skeletal muscle and exercise performance capacity. Given the potential association between Rev-erbα and the immune system and the fact that both pathways are modulated following acute aerobic exercise, we examined the physical performance of IL-10 KO mice and analyzed the modulation of the atrophy and Rev-erbα pathways in the muscle of wild type (WT) and IL-10 KO mice following one session of acute exercise. For each phenotype, WT and IL-10 KO were divided into two subgroups (Control and Exercise). The acute exercise session started at 6 m/min, followed by 3 m/min increments every 3 min until animal exhaustion. Two hours after the end of the exercise protocol, the gastrocnemius muscle was removed and prepared for the reverse transcription-quantitative polymerase chain reaction (RT-q-PCR) and immunoblotting technique. In summary, compared to WT, the IL-10 KO animals showed lower body weight and grip strength in the baseline. The IL-10 control group presented a lower protein content of BMAL1. After the exercise protocol, the IL-10 KO group had higher mRNA levels of Trim63 (atrophy signaling pathway) and lower mRNA levels of Clock and Bmal1 (Rev-erbα signaling pathway). This is the first study showing the relationship between Rev-erbα and atrophy in IL-10 KO mice. Also, we accessed a public database that analyzed the gastrocnemius of MuRF KO mice submitted to two processes of muscle atrophy, a denervation surgery and dexamethasone (Dexa) injections. Independently of knockout, the denervation demonstrated lower Nr1d1 levels. In conclusion, IL-10 seems to be a determinant in the Rev-erbα pathway and atrophy after acute exercise, with no modulation in the baseline state.
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Affiliation(s)
- Gustavo Eduardo da Mata
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Rafael Bricola
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | | | - Fernando M Simabuco
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; Department of Biochemistry, Federal University of São Paulo (UNIFESP), Brazil
| | - José R Pauli
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Ellen C de Freitas
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Eduardo R Ropelle
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Adelino S R da Silva
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.
| | - Ana P Pinto
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.
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Poormoosa Y, Amerzadeh M, Alizadeh A, Kalhor R. The effect of circadian on the productivity of nurses with the mediating role of quality of work life. BMC Nurs 2024; 23:89. [PMID: 38308251 PMCID: PMC10835810 DOI: 10.1186/s12912-024-01746-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/19/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND Circadian rhythms, as an integral part of daily life, govern the scheduling, management, and coordination of living organisms. Given the irregular nature of shift patterns in nurses' work schedules, investigating their implications is paramount to increasing Quality of Work Life (QWL) and productivity. The study aimed to investigate the impact of circadian rhythm on the efficiency of nurses working in hospitals in Qazvin, Iran, with QWL serving as a mediating variable. METHODS This study employed a descriptive-analytical research design, utilizing cross-sectional data collected in 2022-2023 based on the implementation of Structural Equation Modeling (SEM). The number of participants was 378 nurses. The data were obtained by administering a questionnaire and various tools, organized into four sections: demographic information, the Circadian Questionnaire, the Quality of Work Life Questionnaire, and the Nurses' Efficiency Questionnaire. The collected data were subsequently analyzed using SEM techniques within the R software. RESULTS The findings demonstrated statistically significant variations in mean scores about gender and efficiency (p = 0.008), marital status and efficiency (p = 0.000), and employment type and efficiency (p = 0.002) among the study participants. There was a significant association between shift patterns and QWL (p = 0.004). Expressly, the confirmed results indicated a direct impact of circadian on QWL (with a path coefficient of 0.013), as well as an indirect impact on efficiency mediated by the variable QWL (with a path coefficient of 0.037) (p < 0.05). CONCLUSION Due to the critical role of nurses in the healthcare system, implementing strategies that promote their efficiency is paramount. Therefore, managers can create an environment that enhances nurses' productivity by improving methods that positively impact their QWL.
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Affiliation(s)
- Yasaman Poormoosa
- Student Research Committee, School of Public Health, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mohammad Amerzadeh
- Metabolic Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, , Qazvin University of Medical Sciences, Qazvin, Iran
| | - Ahad Alizadeh
- Medical Microbiology Research Center, , Qazvin University of Medical Sciences, Qazvin, Iran
| | - Rohollah Kalhor
- Metabolic Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, , Qazvin University of Medical Sciences, Qazvin, Iran.
- School of Public Health , Qazvin University of Medical Sciences, Qazvin, Iran.
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Thorkildsen MS, Gustad LT, Damås JK. The Effects of Shift Work on the Immune System: A Narrative Review. Sleep Sci 2023; 16:e368-e374. [PMID: 38196768 PMCID: PMC10773516 DOI: 10.1055/s-0043-1772810] [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: 08/11/2022] [Accepted: 11/23/2022] [Indexed: 01/11/2024] Open
Abstract
Working a shift work schedule has been hypothesized to have negative effects on health. One such described consequence is altered immune response and increased risk of infections. Former reviews have concluded that more knowledge is needed to determine how shift work affects the immune system. Since the last review focusing on this subject was published in 2016, new insight has emerged. We performed a search of the topic in PubMed, Scopus and Embase, identifying papers published after 2016, finding a total of 13 new studies. The articles identified showed inconsistent effect on immune cells, cytokines, circadian rhythms, self-reported infections, and vaccine response as a result of working a shift schedule. Current evidence suggests working shifts influence the immune system, however the clinical relevance and the mechanism behind this potential association remains elusive. Further studies need to include longitudinal design and objective measures of shift work and immune response.
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Affiliation(s)
- Marianne Stenbekk Thorkildsen
- Gemini Center for Sepsis Research at Institute of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Trøndelag, Norway
| | - Lise Tuset Gustad
- Gemini Center for Sepsis Research at Institute of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Trøndelag, Norway
- Faculty of Nursing and Health Sciences, Nord University, Levanger, Trøndelag, Norway
- Department of Medicine and Rehabilitation, Levanger Hospital, Levanger, Trøndelag, Norway
| | - Jan Kristian Damås
- Gemini Center for Sepsis Research at Institute of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Trøndelag, Norway
- Centre of Molecular Inflammation Research, Norwegian University og Science and Technology, Trondheim, Trøndelag, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Trøndelag, Norway
- Department of Infectious Diseases, St. Olavs Hospital, Trondheim, Trøndelag, Norway
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Luengo-Mateos M, González-Vila A, Vicente Dragano NR, Ohinska N, Silveira-Loureiro M, González-Domínguez M, Estévez-Salguero Á, Novelle-Rodríguez P, López M, Barca-Mayo O. Hypothalamic astrocytic-BMAL1 regulates energy homeostasis in a sex-dependent manner. Cell Rep 2023; 42:112949. [PMID: 37542717 DOI: 10.1016/j.celrep.2023.112949] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 06/12/2023] [Accepted: 07/20/2023] [Indexed: 08/07/2023] Open
Abstract
Here, we demonstrate that hypothalamic astrocytic BMAL1 computes cyclic metabolic information to optimize energetic resources in a sexually dimorphic manner. Knockdown of BMAL1 in female astrocytes leads to negative energy balance and alters basal metabolic cycles without affecting circadian locomotor activity. Thus, astrocytic BMAL1 contributes to the control of energy balance through the modulation of the metabolic rate, hepatic and white adipose tissue lipogenesis, and the activity of brown adipose tissue. Importantly, most of these alterations are specific to hypothalamic astrocytic BMAL1. Moreover, female mice with BMAL1 knockdown in astrocytes exhibited a "male-like" metabolic obese phenotype when fed a high-fat diet. Overall, our results suggest a sexually dimorphic effect of astrocytic BMAL1 on the regulation of energy homeostasis, which may be of interest in the physiopathology of obesity and related comorbidities.
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Affiliation(s)
- María Luengo-Mateos
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Antía González-Vila
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Nathalia Romanelli Vicente Dragano
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706 Santiago de Compostela, Spain
| | - Nataliia Ohinska
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain; Horbachevsky Ternopil National Medical University, 46001 Ternopil, Ukraine
| | - María Silveira-Loureiro
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Marco González-Domínguez
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ánxela Estévez-Salguero
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Paula Novelle-Rodríguez
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Miguel López
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706 Santiago de Compostela, Spain.
| | - Olga Barca-Mayo
- Physiology Department, Molecular Medicine, and Chronic Diseases Research Centre (CiMUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Kamat PK, Khan MB, Smith C, Siddiqui S, Baban B, Dhandapani K, Hess DC. The time dimension to stroke: Circadian effects on stroke outcomes and mechanisms. Neurochem Int 2023; 162:105457. [PMID: 36442686 PMCID: PMC9839555 DOI: 10.1016/j.neuint.2022.105457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/14/2022] [Accepted: 11/19/2022] [Indexed: 11/26/2022]
Abstract
The circadian system is widely involved in the various pathological outcomes affected by time dimension changes. In the brain, the master circadian clock, also known as the "pacemaker," is present in the hypothalamus's suprachiasmatic nucleus (SCN). The SCN consists of molecular circadian clocks that operate in each neuron and other brain cells. These circadian mechanisms are controlled by the transcription and translation of specific genes such as the clock circadian regulator (Clock) and brain and muscle ARNT-Like 1 (Bmal1). Period (Per1-3) and cryptochrome (Cry1 and 2) negatively feedback and regulate the clock genes. Variations in the circadian cycle and these clock genes can affect stroke outcomes. Studies suggest that the peak stroke occurs in the morning after patients awaken from sleep, while stroke severity and poor outcomes worsen at midnight. The main risk factor associated with stroke is high blood pressure (hypertension). Blood pressure usually dips by 15-20% during sleep, but many hypertensives do not display this normal dipping pattern and are non-dippers. A sleep blood pressure is the primary determinant of stroke risk. This article discusses the possible mechanism associated with circadian rhythm and stroke outcomes.
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Affiliation(s)
- Pradip K Kamat
- Departments of Neurology, Medical College of Georgia, Augusta University, USA.
| | | | - Cameron Smith
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
| | - Shahneela Siddiqui
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
| | - Babak Baban
- Departments of Oral Biology, Dental College of Georgia, Augusta University, USA
| | - Krishnan Dhandapani
- Department of Neurosurgery, Medical College of Georgia, Augusta University, USA
| | - David C Hess
- Departments of Neurology, Medical College of Georgia, Augusta University, USA
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Wang D, Yin H, Wang X, Wang Z, Han M, He Q, Chen J, Xian H, Zhang B, Wei X, Yang B, Pan Y, Li J. Influence of sleep disruption on inflammatory bowel disease and changes in circadian rhythm genes. Heliyon 2022; 8:e11229. [PMID: 36325141 PMCID: PMC9618989 DOI: 10.1016/j.heliyon.2022.e11229] [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: 03/21/2022] [Revised: 08/07/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
According to clinical investigations, sleep disruption (SD) can influence the immune system and cause inflammatory bowel disease (IBD). However, the detailed effects of sleep on IBD development and progression have not been clarified. Here, we used dextran sulfate sodium (DSS) to induce colitis in mice, and then interfered with SD (day-time 8:00 a.m. to 5:00 p.m.) to explore the influence of sleep on colitis by analyzing colon length, mouse body weight, disease activity index (DAI) score, pathology detection, and infiltration of inflammatory cells with LCA immunohistochemistry analysis. Next, we detected the mRNA levels of circadian genes and related inflammatory factors, including Bmal1, CLOCK, Cry1, Cry2, Per1, Per2, Timeless, Rev-erbα, TNF-α, IL-6, and IFN-γ. Additionally, we conducted a sleep survey in IBD patients and collected colon lesion sites to detect the mRNA levels of those eight circadian genes and three inflammatory factors. We found that SD promoted the body weight decrease, increased inflammation as shown with pathological staining of the DSS animal model, and increased expression of the clock gene Cry2 in DSS-induced colitis mice. In IBD patients with active disease, the mRNA level of circadian genes Bmal1, Cry1, Cry2, and Rev-erbα in inflammatory tissues decreased significantly compared with non-inflammatory tissues.
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Affiliation(s)
- Dan Wang
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Houqing Yin
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Xin Wang
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Zequn Wang
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Mengyuan Han
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Quanzhao He
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Jingjing Chen
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China,Department of Pharmacology, Changzhi Medical College, Changzhi City, Shanxi Province, 046000, China
| | - Haocheng Xian
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Bentuo Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Xihua Wei
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Baoxue Yang
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China
| | - Yan Pan
- Department of Pharmacology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing 100191, China,Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing 100191, China,Corresponding author.
| | - Jun Li
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China,Beijing Key Laboratory for Helicobacter Pylori Infection and Upper Gastrointestinal Diseases, Beijing, China,Corresponding author.
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Mekbib T, Suen TC, Rollins-Hairston A, Smith K, Armstrong A, Gray C, Owino S, Baba K, Baggs JE, Ehlen JC, Tosini G, DeBruyne JP. "The ubiquitin ligase SIAH2 is a female-specific regulator of circadian rhythms and metabolism". PLoS Genet 2022; 18:e1010305. [PMID: 35789210 PMCID: PMC9286287 DOI: 10.1371/journal.pgen.1010305] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/15/2022] [Accepted: 06/22/2022] [Indexed: 01/05/2023] Open
Abstract
Circadian clocks enable organisms to predict and align their behaviors and physiologies to constant daily day-night environmental cycle. Because the ubiquitin ligase Siah2 has been identified as a potential regulator of circadian clock function in cultured cells, we have used SIAH2-deficient mice to examine its function in vivo. Our experiments demonstrate a striking and unexpected sexually dimorphic effect of SIAH2-deficiency on the regulation of rhythmically expressed genes in the liver. The absence of SIAH2 in females, but not in males, altered the expression of core circadian clock genes and drastically remodeled the rhythmic transcriptome in the liver by increasing the number of day-time expressed genes, and flipping the rhythmic expression from nighttime expressed genes to the daytime. These effects are not readily explained by effects on known sexually dimorphic pathways in females. Moreover, loss of SIAH2 in females, not males, preferentially altered the expression of transcription factors and genes involved in regulating lipid and lipoprotein metabolism. Consequently, SIAH2-deficient females, but not males, displayed disrupted daily lipid and lipoprotein patterns, increased adiposity and impaired metabolic homeostasis. Overall, these data suggest that SIAH2 may be a key component of a female-specific circadian transcriptional output circuit that directs the circadian timing of gene expression to regulate physiological rhythms, at least in the liver. In turn, our findings imply that sex-specific transcriptional mechanisms may closely interact with the circadian clock to tailor overt rhythms for sex-specific needs.
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Affiliation(s)
- Tsedey Mekbib
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Ting-Chung Suen
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Aisha Rollins-Hairston
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Kiandra Smith
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Ariel Armstrong
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Cloe Gray
- Neuroscience Institute, Department of Neurobiology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Sharon Owino
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Kenkichi Baba
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Julie E. Baggs
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - J. Christopher Ehlen
- Neuroscience Institute, Department of Neurobiology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Gianluca Tosini
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
| | - Jason P. DeBruyne
- Neuroscience Institute, Department of Pharmacology and Toxicology, Morehouse School of Medicine, Atlanta, Georgia, United States of America
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10
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Modelling Female Physiology from Head to Toe: Impact of Sex Hormones, Menstrual Cycle, and Pregnancy. J Theor Biol 2022; 540:111074. [DOI: 10.1016/j.jtbi.2022.111074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/14/2022]
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11
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Stenger S, Grasshoff H, Hundt JE, Lange T. Potential effects of shift work on skin autoimmune diseases. Front Immunol 2022; 13:1000951. [PMID: 36865523 PMCID: PMC9972893 DOI: 10.3389/fimmu.2022.1000951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/29/2022] [Indexed: 02/16/2023] Open
Abstract
Shift work is associated with systemic chronic inflammation, impaired host and tumor defense and dysregulated immune responses to harmless antigens such as allergens or auto-antigens. Thus, shift workers are at higher risk to develop a systemic autoimmune disease and circadian disruption with sleep impairment seem to be the key underlying mechanisms. Presumably, disturbances of the sleep-wake cycle also drive skin-specific autoimmune diseases, but epidemiological and experimental evidence so far is scarce. This review summarizes the effects of shift work, circadian misalignment, poor sleep, and the effect of potential hormonal mediators such as stress mediators or melatonin on skin barrier functions and on innate and adaptive skin immunity. Human studies as well as animal models were considered. We will also address advantages and potential pitfalls in animal models of shift work, and possible confounders that could drive skin autoimmune diseases in shift workers such as adverse lifestyle habits and psychosocial influences. Finally, we will outline feasible countermeasures that may reduce the risk of systemic and skin autoimmunity in shift workers, as well as treatment options and highlight outstanding questions that should be addressed in future studies.
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Affiliation(s)
- Sarah Stenger
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Hanna Grasshoff
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Jennifer Elisabeth Hundt
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany.,Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - Tanja Lange
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany.,Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany.,Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Lübeck, Germany
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Guo X, Zheng J, Zhang S, Jiang X, Chen T, Yu J, Wang S, Ma X, Wu C. Advances in Unhealthy Nutrition and Circadian Dysregulation in Pathophysiology of NAFLD. FRONTIERS IN CLINICAL DIABETES AND HEALTHCARE 2021; 2:691828. [PMID: 36994336 PMCID: PMC10012147 DOI: 10.3389/fcdhc.2021.691828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022]
Abstract
Unhealthy diets and lifestyle result in various metabolic conditions including metabolic syndrome and non-alcoholic fatty liver disease (NAFLD). Much evidence indicates that disruption of circadian rhythms contributes to the development and progression of excessive hepatic fat deposition and inflammation, as well as liver fibrosis, a key characteristic of non-steatohepatitis (NASH) or the advanced form of NAFLD. In this review, we emphasize the importance of nutrition as a critical factor in the regulation of circadian clock in the liver. We also focus on the roles of the rhythms of nutrient intake and the composition of diets in the regulation of circadian clocks in the context of controlling hepatic glucose and fat metabolism. We then summarize the effects of unhealthy nutrition and circadian dysregulation on the development of hepatic steatosis and inflammation. A better understanding of how the interplay among nutrition, circadian rhythms, and dysregulated metabolism result in hepatic steatosis and inflammation can help develop improved preventive and/or therapeutic strategies for managing NAFLD.
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Affiliation(s)
- Xin Guo
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Xin Guo, ; Chaodong Wu,
| | - Juan Zheng
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Shixiu Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaofan Jiang
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ting Chen
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Jiayu Yu
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Shu'e Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaomin Ma
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chaodong Wu
- Department of Nutrition, Texas A&M University, College Station, TX, United States
- *Correspondence: Xin Guo, ; Chaodong Wu,
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Layton AT. His and her mathematical models of physiological systems. Math Biosci 2021; 338:108642. [PMID: 34119481 DOI: 10.1016/j.mbs.2021.108642] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/30/2022]
Abstract
Beyond the reproductive system and reproductive behaviors, men and women exhibit major differences in many organ systems, including the anatomy of the brain, the activities of the stress and immune systems, and the metabolic and cardiovascular functions. A comprehensive understanding of the impact of these sex differences on health and disease is crucial to the development of effective sex-based therapies. Mathematical modeling has the potential of facilitating and contributing to advancing the understanding of sex differences in health and disease. Indeed, explosion of mathematical models have been developed in recent decades for different aspects of human physiology and pathophysiology. This review contains a survey of sex-specific mathematical models of physiological systems, describe insights that have been revealed in those modeling studies, and discuss future opportunities.
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Affiliation(s)
- Anita T Layton
- Departments of Applied Mathematics and Biology, Cheriton School of Computer Science, and School of Pharmacology, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
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