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Xu S, Jia M, Guo J, He J, Chen X, Xu Y, Hu W, Wu D, Wu C, Ji X. Ticking Brain: Circadian Rhythm as a New Target for Cerebroprotection. Stroke 2024; 55:2385-2396. [PMID: 39011642 DOI: 10.1161/strokeaha.124.046684] [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] [Indexed: 07/17/2024]
Abstract
Circadian rhythm is a master process observed in nearly every type of cell throughout the body, and it macroscopically regulates daily physiology. Recent clinical trials have revealed the effects of circadian variation on the incidence, pathophysiological processes, and prognosis of acute ischemic stroke. Furthermore, core clock genes, the cell-autonomous pacemakers of the circadian rhythm, affect the neurovascular unit-composing cells in a nonparallel manner after the same pathophysiological processes of ischemia/reperfusion. In this review, we discuss the influence of circadian rhythms and clock genes on each type of neurovascular unit cell in the pathophysiological processes of acute ischemic stroke.
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Affiliation(s)
- Shuaili Xu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders (S.X., X.J.), Capital Medical University, Beijing, China
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Milan Jia
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
| | - Jiaqi Guo
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Jiachen He
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Xi Chen
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Yi Xu
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Wenbo Hu
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Di Wu
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
| | - Chuanjie Wu
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders (S.X., X.J.), Capital Medical University, Beijing, China
- Department of Neurology, Xuanwu Hospital (M.J., X.C., Y.X., W.H., C.W., X.J.), Capital Medical University, Beijing, China
- China-America Institute of Neuroscience, Xuanwu Hospital (S.X., J.G., J.H., X.C., Y.X., W.H., D.W., X.J.), Capital Medical University, Beijing, China
- Department of Neurosurgery, Xuanwu Hospital (X.J.), Capital Medical University, Beijing, China
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Asaad W, Utkina M, Shcherbakova A, Popov S, Melnichenko G, Mokrysheva N. scRNA sequencing technology for PitNET studies. Front Endocrinol (Lausanne) 2024; 15:1414223. [PMID: 39114291 PMCID: PMC11303145 DOI: 10.3389/fendo.2024.1414223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 07/10/2024] [Indexed: 08/10/2024] Open
Abstract
Pituitary neuroendocrine tumors (PitNETs) are common, most likely benign tumors with complex clinical characteristics related to hormone hypersecretion and/or growing sellar tumor mass. PitNET types are classified according to their expression of specific transcriptional factors (TFs) and hormone secretion levels. Some types show aggressive, invasive, and reoccurrence behavior. Current research is being conducted to understand the molecular mechanisms regulating these high-heterogeneous neoplasms originating from adenohypophysis, and single-cell RNA sequencing (scRNA-seq) technology is now playing an essential role in these studies due to its remarkable resolution at the single-cell level. This review describes recent studies on human PitNETs performed with scRNA-seq technology, highlighting the potential of this approach in revealing these tumor pathologies, behavior, and regulatory mechanisms.
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Affiliation(s)
| | - Marina Utkina
- Department of General, Molecular and Population Genetics, Endocrinology Research Centre, Moscow, Russia
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Savvidis C, Kallistrou E, Kouroglou E, Dionysopoulou S, Gavriiloglou G, Ragia D, Tsiama V, Proikaki S, Belis K, Ilias I. Circadian rhythm disruption and endocrine-related tumors. World J Clin Oncol 2024; 15:818-834. [PMID: 39071458 PMCID: PMC11271730 DOI: 10.5306/wjco.v15.i7.818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 06/20/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024] Open
Abstract
This review delved into the intricate relationship between circadian clocks and physiological processes, emphasizing their critical role in maintaining homeostasis. Orchestrated by interlocked clock genes, the circadian timekeeping system regulates fundamental processes like the sleep-wake cycle, energy metabolism, immune function, and cell proliferation. The central oscillator in the hypothalamic suprachiasmatic nucleus synchronizes with light-dark cycles, while peripheral tissue clocks are influenced by cues such as feeding times. Circadian disruption, linked to modern lifestyle factors like night shift work, correlates with adverse health outcomes, including metabolic syndrome, cardiovascular diseases, infections, and cancer. We explored the molecular mechanisms of circadian clock genes and their impact on metabolic disorders and cancer pathogenesis. Specific associations between circadian disruption and endocrine tumors, spanning breast, ovarian, testicular, prostate, thyroid, pituitary, and adrenal gland cancers, are highlighted. Shift work is associated with increased breast cancer risk, with PER genes influencing tumor progression and drug resistance. CLOCK gene expression correlates with cisplatin resistance in ovarian cancer, while factors like aging and intermittent fasting affect prostate cancer. Our review underscored the intricate interplay between circadian rhythms and cancer, involving the regulation of the cell cycle, DNA repair, metabolism, immune function, and the tumor microenvironment. We advocated for integrating biological timing into clinical considerations for personalized healthcare, proposing that understanding these connections could lead to novel therapeutic approaches. Evidence supports circadian rhythm-focused therapies, particularly chronotherapy, for treating endocrine tumors. Our review called for further research to uncover detailed connections between circadian clocks and cancer, providing essential insights for targeted treatments. We emphasized the importance of public health interventions to mitigate lifestyle-related circadian disruptions and underscored the critical role of circadian rhythms in disease mechanisms and therapeutic interventions.
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Affiliation(s)
- Christos Savvidis
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Efthymia Kallistrou
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Eleni Kouroglou
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Sofia Dionysopoulou
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | | | - Dimitra Ragia
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Vasiliki Tsiama
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Stella Proikaki
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Konstantinos Belis
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
| | - Ioannis Ilias
- Department of Endocrinology, Hippocration General Hospital, Athens GR-11527, Greece
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Niu Z, Yang Z, Sun S, Zeng Z, Han Q, Wu L, Bai J, Li H, Xia H. Clinical analysis of the efficacy of radiation therapy for primary high-grade gliomas guided by biological rhythms. Transl Oncol 2024; 45:101973. [PMID: 38705052 PMCID: PMC11089398 DOI: 10.1016/j.tranon.2024.101973] [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: 12/29/2023] [Revised: 04/05/2024] [Accepted: 04/20/2024] [Indexed: 05/07/2024] Open
Abstract
OBJECTIVE High-grade glioma (HGG) patients frequently encounter treatment resistance and relapse, despite numerous interventions seeking enhanced survival outcomes yielding limited success. Consequently, this study, rooted in our prior research, aimed to ascertain whether leveraging circadian rhythm phase attributes could optimize radiotherapy results. METHODS In this retrospective analysis, we meticulously selected 121 HGG cases with synchronized rhythms through Cosinor analysis. Post-surgery, all subjects underwent standard radiotherapy alongside Temozolomide chemotherapy. Random allocation ensued, dividing patients into morning (N = 69) and afternoon (N = 52) radiotherapy cohorts, enabling a comparison of survival and toxicity disparities. RESULTS The afternoon radiotherapy group exhibited improved overall survival (OS) and progression-free survival (PFS) relative to the morning cohort. Notably, median OS extended to 25.6 months versus 18.5 months, with P = 0.014, with median PFS at 20.6 months versus 13.3 months, with P = 0.022, post-standardized radiotherapy. Additionally, lymphocyte expression levels in the afternoon radiation group 32.90(26.10, 39.10) significantly exceeded those in the morning group 31.30(26.50, 39.20), with P = 0.032. CONCLUSIONS This study underscores the markedly prolonged average survival within the afternoon radiotherapy group. Moreover, lymphocyte proportion demonstrated a notable elevation in the afternoon group. Timely and strategic adjustments of therapeutic interventions show the potential to improve therapeutic efficacy, while maintaining vigilant systemic immune surveillance. A comprehensive grasp of physiological rhythms governing both the human body and tumor microenvironment can refine treatment efficacy, concurrently curtailing immune-related damage-a crucial facet of precision medicine.
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Affiliation(s)
- Zhanfeng Niu
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Zhihua Yang
- Department of Radiation Oncology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Shengyu Sun
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Zhong Zeng
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China; Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, PR China
| | - Qian Han
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China; Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, PR China
| | - Liang Wu
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Jinbo Bai
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Hailiang Li
- Department of Radiation Oncology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China
| | - Hechun Xia
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region 750004, PR China; Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, PR China.
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Khezri MR, Hsueh H, Mohammadipanah S, Khalili Fard J, Ghasemnejad‐Berenji M. The interplay between the PI3K/AKT pathway and circadian clock in physiologic and cancer-related pathologic conditions. Cell Prolif 2024; 57:e13608. [PMID: 38336976 PMCID: PMC11216939 DOI: 10.1111/cpr.13608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/15/2023] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
The circadian clock is responsible for the regulation of different cellular processes, and its disturbance has been linked to the development of different diseases, such as cancer. The main molecular mechanism for this issue has been linked to the crosstalk between core clock regulators and intracellular pathways responsible for cell survival. The PI3K/AKT signalling pathway is one of the most known intracellular pathways in the case of cancer initiation and progression. This pathway regulates different aspects of cell survival including proliferation, apoptosis, metabolism, and response to environmental stimuli. Accumulating evidence indicates that there is a link between the PI3K/AKT pathway activity and circadian rhythm in physiologic and cancer-related pathogenesis. Different classes of PI3Ks and AKT isoforms are involved in regulating circadian clock components in a transcriptional and functional manner. Reversely, core clock components induce a rhythmic fashion in PI3K and AKT activity in physiologic and pathogenic conditions. The aim of this review is to re-examine the interplay between this pathway and circadian clock components in normal condition and cancer pathogenesis, which provides a better understanding of how circadian rhythms may be involved in cancer progression.
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Affiliation(s)
- Mohammad Rafi Khezri
- Reproductive Health Research Center, Clinical Research InstituteUrmia University of Medical SciencesUrmiaIran
| | - Hsiang‐Yin Hsueh
- The Ohio State University Graduate Program in Molecular, Cellular and Developmental BiologyThe Ohio State UniversityColumbusOhioUSA
| | - Somayeh Mohammadipanah
- Reproductive Health Research Center, Clinical Research InstituteUrmia University of Medical SciencesUrmiaIran
| | - Javad Khalili Fard
- Department of Pharmacology and Toxicology, Faculty of PharmacyTabriz University of Medical SciencesTabrizIran
| | - Morteza Ghasemnejad‐Berenji
- Department of Pharmacology and Toxicology, Faculty of PharmacyUrmia University of Medical SciencesUrmiaIran
- Research Center for Experimental and Applied Pharmaceutical SciencesUrmia University of Medical SciencesUrmiaIran
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Ma H, Sheng X, Chen W, He H, Liu J, He Y, Huang F. PER2 regulates odontoblastic differentiation of dental papilla cells in vitro via intracellular ATP content and reactive oxygen species levels. PeerJ 2023; 11:e16489. [PMID: 38084142 PMCID: PMC10710777 DOI: 10.7717/peerj.16489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/29/2023] [Indexed: 12/18/2023] Open
Abstract
Background Dental papilla cells (DPCs) are one of the key stem cells for tooth development, eventually forming dentin and pulp. Previous studies have reported that PER2 is expressed in a 24-hour oscillatory pattern in DPCs in vitro. In vivo, PER2 is highly expressed in odontoblasts (which are differentiated from DPCs). However, whether PER2 modulates the odontogenic differentiation of DPCs is uncertain. This research was to identify the function of PER2 in the odontogenic differentiation of DPCs and preliminarily explore its mechanisms. Methods We monitored the expression of PER2 in DPCs differentiated in vivo. We used PER2 overexpression and knockdown studies to assess the role of PER2 in DPC differentiation and performed intracellular ATP content and reactive oxygen species (ROS) assays to further investigate the mechanism. Results PER2 expression was considerably elevated throughout the odontoblastic differentiation of DPCs in vivo. Overexpressing Per2 boosted levels of odontogenic differentiation markers, such as dentin sialophosphoprotein (Dspp), dentin matrix protein 1 (Dmp1), and alkaline phosphatase (Alp), and enhanced mineralized nodule formation in DPCs. Conversely, the downregulation of Per2 inhibited the differentiation of DPCs. Additionally, downregulating Per2 further affected intracellular ATP content and ROS levels during DPC differentiation. Conclusion Overall, we demonstrated that PER2 positively regulates the odontogenic differentiation of DPCs, and the mechanism may be related to mitochondrial function as shown by intracellular ATP content and ROS levels.
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Affiliation(s)
- Haozhen Ma
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xinyue Sheng
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wanting Chen
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Hongwen He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiawei Liu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yifan He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Fang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
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Zhao S, Zhu Y, Liu H, He X, Xie J. System analysis based on the pyroptosis-related genes identifes GSDMD as a novel therapy target for skin cutaneous melanoma. J Transl Med 2023; 21:801. [PMID: 37950289 PMCID: PMC10636830 DOI: 10.1186/s12967-023-04513-9] [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: 06/05/2023] [Accepted: 09/08/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Skin cutaneous melanoma (SKCM) is the most aggressive skin cancer, accounting for more than 75% mortality rate of skin-related cancers. As a newly identified programmed cell death, pyroptosis has been found to be closely associated with tumor progression. Nevertheless, the prognostic significance of pyroptosis in SKCM remains elusive. METHODS A total of 469 SKCM samples and 812 normal samples were obtained from The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) databases. Firstly, differentially expressed pyroptosis-related genes (PRGs) between normal samples and SKCM samples were identified. Secondly, we established a prognostic model based on univariate Cox and LASSO Cox regression analyses, which was validated in the test cohort from GSE65904. Thirdly, a nomogram was used to predict the survival probability of SKCM patients. The R package "pRRophetic" was utilized to identify the drug sensitivity between the low- and high-risk groups. Tumor immune infiltration was evaluated using "immuneeconv" R package. Finally, the function of GSDMD and SB525334 was explored in A375 and A2058 cells. RESULTS Based on univariate Cox and LASSO regression analyses, we established a prognostic model with identified eight PRGs (AIM2, CASP3, GSDMA, GSDMC, GSDMD, IL18, NLRP3, and NOD2), which was validated in the test cohort. SKCM patients were divided into low- and high-risk groups based on the median of risk score. Kaplan-Meier survival analysis showed that high-risk patients had shorter overall survival than low-risk patients. Additionally, time-dependent ROC curves validated the accuracy of the risk model in predicting the prognosis of SKCM. More importantly, 4 small molecular compounds (SB525334, SR8278, Gemcitabine, AT13387) were identified, which might be potential drugs for patients in different risk groups. Finally, overexpression of GSDMD and SB525334 treatment inhibit the proliferation, migration, and invasion of SKCM cells. CONCLUSION In this study, we constructed a prognostic model based on PRGs and identified GSDMD as a potential therapeutic target, which provide new insights into SKCM treatment.
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Affiliation(s)
- Shixin Zhao
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yongkang Zhu
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Hengdeng Liu
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xuefeng He
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Julin Xie
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China.
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
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Lin L, Huang Y, Wang J, Guo X, Yu F, He D, Wu C, Guo L, Wu B. CRY1/2 regulate rhythmic CYP2A5 in mouse liver through repression of E4BP4. Biochem Pharmacol 2023; 217:115843. [PMID: 37797722 DOI: 10.1016/j.bcp.2023.115843] [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: 08/11/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
CYP2A5, an enzyme responsible for metabolism of diverse drugs, displays circadian rhythms in its expression and activity. However, the underlying mechanisms are not fully established. Here we aimed to investigate a potential role of CRY1/2 (circadian clock modulators) in circadian regulation of hepatic CYP2A5. Regulatory effects of CRY1/2 on CYP2A5 were determined using Cry1-null and Cry2-null mice, and validated using AML-12, Hepa1-6 and HepG2 cells. CYP2A5 activities both in vivo and in vitro were assessed using coumarin 7-hydroxylation as a probe reaction. mRNA and protein levels were detected by qPCR and western blotting, respectively. Regulatory mechanism was studied using a combination of luciferase reporter assays, chromatin immunoprecipitation (ChIP) and co-immunoprecipitation (Co-IP). We found that ablation of Cry1 or Cry2 in mice reduced hepatic CYP2A5 expression (at both mRNA and protein levels) and blunted its diurnal rhythms. Consistently, these knockouts showed decreased CYP2A5 activity (characterised by coumarin 7-hydroxylation) and a loss of its time-dependency, as well as exacerbated coumarin-induced hepatotoxicity. Cell-based assays confirmed that CRY1/2 positively regulated CYP2A5 expression and rhythms. Based on combined luciferase reporter, ChIP and Co-IP assays, we unraveled that CRY1/2 interacted with E4BP4 protein to repress its inhibitory effect on Cyp2a5 transcription and expression. In conclusion, CRY1/2 regulate rhythmic CYP2A5 in mouse liver through repression of E4BP4. These findings advance our understanding of circadian regulation of drug metabolism and pharmacokinetics.
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Affiliation(s)
- Luomin Lin
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Yuwei Huang
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyi Wang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Xiaocao Guo
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Fangjun Yu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Di He
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Lianxia Guo
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Baojian Wu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China.
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