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Zhou D, Wang Y, Chen L, Jia L, Yuan J, Sun M, Zhang W, Wang P, Zuo J, Xu Z, Luan J. Evolving roles of circadian rhythms in liver homeostasis and pathology. Oncotarget 2016; 7:8625-39. [PMID: 26843619 PMCID: PMC4890992 DOI: 10.18632/oncotarget.7065] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 01/18/2016] [Indexed: 02/06/2023] Open
Abstract
Circadian clock in mammals is determined by a core oscillator in the suprachiasmatic nucleus (SCN) of the hypothalamus and synchronized peripheral clocks in other tissues. The coherent timing systems could sustain robust output of circadian rhythms in response to the entrainment controlled environmentally. Disparate approaches have discovered that clock genes and clock-controlled genes (CCGs) exist in nearly all mammalian cell types and are essential for establishing the mechanisms and complexity of internal time-keeping systems. Accumulating evidence demonstrates that the control of homeostasis and pathology in the liver involves intricate loops of transcriptional and post-translational regulation of clock genes expression. This review will focus on the recent advances with great importance concerning clock rhythms linking liver homeostasis and diseases. We particularly highlight what is currently known of the evolving insights into the mechanisms underlying circadian clock . Eventually , findings during recent years in the field might prompt new circadian-related chronotherapeutic strategies for the diagnosis and treatment of liver diseases by coupling these processes.
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Affiliation(s)
- Dexi Zhou
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Yaqin Wang
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Lu Chen
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Leijuan Jia
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Jie Yuan
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Mei Sun
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Wen Zhang
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Peipei Wang
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Jian Zuo
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Zhenyu Xu
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Jiajie Luan
- Laboratory of Clinical Pharmacy of Wannan Medical College, Wuhu, Anhui Province, China
- Department of Pharmacy in Yijishan Hospital of Wannan Medical College, Wuhu, Anhui Province, China
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Morioka N, Tomori M, Zhang FF, Saeki M, Hisaoka-Nakashima K, Nakata Y. Stimulation of nuclear receptor REV-ERBs regulates tumor necrosis factor-induced expression of proinflammatory molecules in C6 astroglial cells. Biochem Biophys Res Commun 2015; 469:151-7. [PMID: 26616049 DOI: 10.1016/j.bbrc.2015.11.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 11/19/2015] [Indexed: 01/18/2023]
Abstract
Under physiological conditions, astrocytes maintain homeostasis in the CNS. Following inflammation and injury to the CNS, however, activated astrocytes produce neurotoxic molecules such as cytokines and chemokines, amplifying the initial molecular-cellular events evoked by inflammation and injury. Nuclear receptors REV-ERBα and REV-ERBβ (REV-ERBs) are crucial in the regulation of inflammation- and metabolism-related gene transcription. The current study sought to elucidate a role of REV-ERBs in rat C6 astroglial cells on the expression of inflammatory molecules following stimulation with the neuroinflammatory cytokine tumor necrosis factor (TNF). Stimulation of C6 cells with TNF (10 ng/ml) significantly increased the mRNA expression of CCL2, interleukin-6 (IL-6), inducible nitric oxide synthase (iNOS), and matrix metalloprotease (MMP)-9, but not fibroblast growth factor-2 (FGF-2), cyclooxygenase-2 (COX-2) and MMP-2. Treatment with either REV-ERB agonists GSK4112 or SR9009 significantly blocked TNF-induced upregulation of CCL2 mRNA and MMP-9 mRNA, but not IL-6 mRNA and iNOS mRNA expression. Furthermore, treatment with RGFP966, a selective histone deacetylase 3 (HDAC3) inhibitor, potently reversed the inhibitory effects of GSK4112 on TNF-induced expression of MMP-9 mRNA, but not CCL2 mRNA. Expression of Rev-erbs mRNA in C6 astroglial cells, primary cultured rat cortical and spinal astrocytes was confirmed by reverse transcription polymerase chain reaction. Together, the findings demonstrate an anti-inflammatory effect, downregulating of MMP-9 and CCL2 transcription, of astroglial REV-ERBs activation through HDAC3-dependent and HDAC3-independent mechanisms.
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Affiliation(s)
- Norimitsu Morioka
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
| | - Mizuki Tomori
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Fang Fang Zhang
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Munenori Saeki
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Kazue Hisaoka-Nakashima
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Yoshihiro Nakata
- Department of Pharmacology, Hiroshima University Graduate School of Biomedical & Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
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Chun SK, Chung S, Kim HD, Lee JH, Jang J, Kim J, Kim D, Son GH, Oh YJ, Suh YG, Lee CS, Kim K. A synthetic cryptochrome inhibitor induces anti-proliferative effects and increases chemosensitivity in human breast cancer cells. Biochem Biophys Res Commun 2015; 467:441-6. [PMID: 26407844 DOI: 10.1016/j.bbrc.2015.09.103] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 09/18/2015] [Indexed: 01/21/2023]
Abstract
Disruption of circadian rhythm is a major cause of breast cancer in humans. Cryptochrome (CRY), a circadian transcription factor, is a risk factor for initiation of breast cancer, and it is differentially expressed between normal and breast cancer tissues. Here, we evaluated the anti-proliferative and pro-apoptotic activity of KS15, a recently discovered small-molecule inhibitor of CRY, in human breast cancer cells. First, we investigated whether KS15 treatment could promote E-box-mediated transcription by inhibiting the activity of CRY in MCF-7 human breast cancer cells. Protein and mRNA levels of regulators of cell cycle and apoptosis, as well as core clock genes, were differentially modulated in response to KS15. Next, we investigated whether KS15 could inhibit proliferation and increase sensitivity to anti-tumor drugs in MCF-7 cells. We found that KS15 decreased the speed of cell growth and increased the chemosensitivity of MCF-7 cells to doxorubicin and tamoxifen, but had no effect on MCF-10A cells. These findings suggested that pharmacological inhibition of CRY by KS15 exerts an anti-proliferative effect and increases sensitivity to anti-tumor drugs in a specific type of breast cancer.
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Affiliation(s)
- Sung Kook Chun
- Department of Brain & Cognitive Sciences, Daegu-Gyeongbuk Institute of Science & Technology, Daegu, 711-873, South Korea; Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Brain & Cognitive Sciences, Seoul National University, Seoul, 151-747, South Korea
| | - Sooyoung Chung
- Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, 136-705, South Korea
| | - Hee-Dae Kim
- Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea
| | - Ju Hyung Lee
- Department of Systems Biology, Yonsei University College of Life Science and Biotechnology, Seoul 120-749, South Korea
| | - Jaebong Jang
- College of Pharmacy, Seoul National University, Seoul, 151-742, South Korea
| | - Jeongah Kim
- Department of Brain & Cognitive Sciences, Daegu-Gyeongbuk Institute of Science & Technology, Daegu, 711-873, South Korea; Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Brain & Cognitive Sciences, Seoul National University, Seoul, 151-747, South Korea
| | - Doyeon Kim
- Department of Brain & Cognitive Sciences, Daegu-Gyeongbuk Institute of Science & Technology, Daegu, 711-873, South Korea; Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Brain & Cognitive Sciences, Seoul National University, Seoul, 151-747, South Korea
| | - Gi Hoon Son
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, 136-705, South Korea
| | - Young J Oh
- Department of Systems Biology, Yonsei University College of Life Science and Biotechnology, Seoul 120-749, South Korea
| | - Young-Ger Suh
- College of Pharmacy, Seoul National University, Seoul, 151-742, South Korea
| | - Cheol Soon Lee
- Gachon Clinical Trials Center, Gachon University, Incheon, 417-842, South Korea
| | - Kyungjin Kim
- Department of Brain & Cognitive Sciences, Daegu-Gyeongbuk Institute of Science & Technology, Daegu, 711-873, South Korea; Department of Biological Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Brain & Cognitive Sciences, Seoul National University, Seoul, 151-747, South Korea.
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