1
|
Cao C, Zhang Y, Zuo S, Zhao W, Wu Y, Ma X. Enteral nutrition alleviated lipopolysaccharides-induced hypercatabolism through ghrelin/GHS-R1α-POMC. Biochem Biophys Res Commun 2022; 597:122-127. [PMID: 35144174 DOI: 10.1016/j.bbrc.2022.01.130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/31/2022] [Indexed: 11/21/2022]
Abstract
Sustained hypercatabolism induced by sepsis contributed to serious complications and mortality in the intensive care unit. Enteral nutrition (EN) was required to maintain the energy balance during sepsis. Ghrelin, which was stimulated secretion by EN, had been shown to regulate energy homeostasis. Therefore, we tested whether EN alleviated hypercatabolism through ghrelin/GH secretagogue receptor 1α (GHS-R1α)-proopiomelanocortin (POMC) in endotoxemic rats. Rats in the Sham and lipopolysaccharide (LPS) groups were free access to rodent chow diet and water. Rats in the EN, EN + Lys and EN + 3-MA groups were intracerebroventricularly injected with saline, D-Lys3-GHRP-6 or 3-MA and then received EN for three days. Hypercatabolism was measured by the change of body weight, insulin resistance, leptin, corticosterone, muscle protein synthesis and atrophy. Serum and hypothalamic total ghrelin, acylated ghrelin, GHS-R1α and AMP-activated protein kinase (AMPK)-autophagy-POMC pathway were also detected. The results showed that EN increased serum and hypothalamic total ghrelin, acylated ghrelin and GHS-R1α, effectively activated the hypothalamic AMPK-autophagy-POMC pathway and alleviated hypercatabolism in endotoxemic rats. The improving effects of EN on hypercatabolism and hypothalamic AMPK-autophagy-POMC pathway were abolished with the central administration of D-Lys3-GHRP-6 to inhibited hypothalamic GHS-R1α. And with the central administration of 3-MA to inhibited hypothalamic autophagy, the improving effect of EN on hypercatabolism was also abolished in endotoxemic rats. In conclusions, EN could significantly alleviate hypercatabolism through ghrelin/GHS-R1α-POMC in endotoxemic rats.
Collapse
Affiliation(s)
- Chun Cao
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
| | - Yijie Zhang
- Department of Emergency Surgery, The Affiliated Hospital of Guizhou Medical University, Guizhou, 550004, China
| | - Shi Zuo
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guizhou, 550004, China
| | - Wei Zhao
- Department of Emergency Surgery, The Affiliated Hospital of Guizhou Medical University, Guizhou, 550004, China
| | - Yingxia Wu
- Department of Emergency Intensive Care Unit, The Affiliated Hospital of Guizhou Medical University, Guizhou, 550004, China.
| | - Xiaoming Ma
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China.
| |
Collapse
|
2
|
Wu Z, Guo J, Zhang Y, Liu J, Ma H, Tang Y. MiR-425-5p accelerated the proliferation, migration, and invasion of ovarian cancer cells via targeting AFF4. J Ovarian Res 2021; 14:138. [PMID: 34686190 PMCID: PMC8539801 DOI: 10.1186/s13048-021-00894-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/11/2021] [Indexed: 11/10/2022] Open
Abstract
Background Accumulating data have established that microRNAs (miRNAs) play significant regulatory roles in the carcinogenesis and progression of ovarian cancer (OC). MiR-425-5p was reported to function in various tumors. However, the roles and underlying mechanism of miR-425-5p involvement in OC development and progression are unclear. Methods A comprehensive strategy of data mining, computational biology, and real-time polymerase chain reaction was employed to identify the involvement of miR-425-5p in OC progression. The effect of miR-425-5p on the proliferation, migration, and invasion of OC cells was determined using Cell Counting Kit-8, wound-healing, and Matrigel invasion assays, respectively. Luciferase assay was performed to evaluate the interactions between miR-425-5p and MAGI2-AS3 or AFF4. Results miR-425-5p was significantly up-regulated in OC tissues and cells. The luciferase reporter assay revealed that miR-425-5p was negatively regulated by MAGI2-AS3. Silencing miR-425-5p inhibited the proliferation, migration, and invasion of OC cells in vitro. Bioinformatics analysis and luciferase reporter assay revealed that AFF4 was the target gene of miR-425-5p. Moreover, AFF4 expression was significantly decreased in OC and was closely related to the good prognosis of patients with OC. AFF4 overexpression inhibited the proliferation, migration, and invasion of OC cells in vitro. By contrast, silencing AFF4 promoted the proliferation, migration, and invasion of OC cells in vitro. Finally, AFF4 suppression rescued the inhibitory effect of silencing miR-425-5p on the proliferation, migration, and invasion of OC cells. Conclusion To the best our knowledge, this is the first study to demonstrate that miR-425-5p overexpression in OC is negatively regulated by MAGI2-AS3. Moreover, miR-425-5p promotes the proliferation, migration, and invasion of OC cells by targeting AFF4, suggesting that miR-425-5p/AFF4 signaling pathway represented a novel therapeutic target for patients with OC. Supplementary Information The online version contains supplementary material available at 10.1186/s13048-021-00894-x.
Collapse
Affiliation(s)
- Zhihui Wu
- Department of Clinical Laboratory, Fujian Provincial Maternity and Children Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, 350001, Fujian Province, China
| | - Jianlin Guo
- Department of Laboratory, Second People's Hospital, Kashgar Area, Xinjiang, 844000, China
| | - Ying Zhang
- Department of Clinical Laboratory, Tuoli County People's Hospital, Tacheng, Xinjiang, 834500, Uygur Autonomous Region, China
| | - Jianhua Liu
- Department of Clinical Laboratory, Beijing Rehabilitation Hospital, Capital Medical University, Beijing, 100144, China.
| | - Hongping Ma
- Department of Clinical Laboratory, Children's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China.
| | - Yurong Tang
- Laboratory Department of Shengli Oilfield Central Hospital, Dongying, 257100, China.
| |
Collapse
|
3
|
Li S, Liang X, Liang Y, Li L, Gan J, Cao L, Zou Y. Identification of the transcription factor, AFF4, as a new target of miR-203 in CNS. Int J Biol Macromol 2021; 181:919-927. [PMID: 33878354 DOI: 10.1016/j.ijbiomac.2021.04.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 12/18/2022]
Abstract
MiR-203 was identified as a hub of a potential regulatory miRNA network in central nervous system. Overexpressing of miR-203 in the frontal cortex of C57BL/6J wild type mouse induced neurodegeneration by increasing the apoptotic pathway and neuron death. AFF4, a transcription factor, was identified as a new bona fida protein target of miR-203 in CNS. The miRNA:mRNA interaction of miR-203 and AFF4 was verified using Dural-luciferase assay. Down-regulated expression of AFF4 was induced by overexpressing miR-203 both in vitro and in vivo. Open field test, Y maze and Morris water maze test were conducted for the behavioral assessment of the mice with stereotactic injection of lentiviral vector overexpressing miR-203 in the hippocampus. No anxiety-like behavior or impaired cognition was noticed in these mice. Consistent with the results of the behavioral assessment, the electron micrograph and Nissl staining revealed no significant change in the synaptic density and no neuron injuries in the hippocampus of mice overexpressing miR-203, respectively. Our results indicated that instead of promoting neurodegenerative phenotype, a more profound function should be ascribed to miR-203 in regulating neuron behavioral activities and cognition. Neuron-type specific functions of miR-203 are likely to be executed via its various downstream protein interactors.
Collapse
Affiliation(s)
- Shufang Li
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Xiaosheng Liang
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Yaohui Liang
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Linpeng Li
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Jia Gan
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Lin Cao
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Yi Zou
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China.
| |
Collapse
|
4
|
Cao C, Li X, Yang X, Xi F, Gao T, Xing C, Yu W. A Comparison of Gastric and Jejunal Feeding in Hypercatabolism Associated With Hypothalamic AMPK-Autophagy-POMC in Endotoxemic Rats. JPEN J Parenter Enteral Nutr 2019; 44:481-490. [PMID: 31148205 DOI: 10.1002/jpen.1613] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/14/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND Hypercatabolism is associated with increased infectious rates and mortality in critically ill patients. Enteral nutrition (EN) is usually used to counteract hypercatabolism. However, the impact of different routes of EN on hypercatabolism remains unknown. Here, we compared the impact of gastric feeding (GF) and jejunal feeding (JF) on gastrointestinal hormones and hypercatabolism, which is associated with hypothalamic adenosine 5'-monophosphate-activated protein kinase (AMPK)-autophagy-proopiomelanocortin (POMC). METHODS Sixty adult male Sprague-Dawley rats were divided into 5 groups: Sham and lipopolysaccharide (LPS) groups fed a standard chow diet, a pair-fed group that was a subset of saline-treated rats pair-fed with the LPS group, and LPS + JF and LPS + GF groups (received EN via jejunal and gastric tube, respectively, for 3 days [100 kcal/kg/d]). Hypercatabolism was measured by insulin resistance, muscle protein synthesis, and atrophy. Serum gastrointestinal hormones, hypothalamic ghrelin, growth hormone secretagogue receptor-1α (GHS-R1α), and AMPK-autophagy-POMC markers were also detected. RESULTS GF increased serum total, acylated, desacylated, and hypothalamic ghrelin and decreased glucagon-like peptide-1 (GLP-1). But no effect on pancreatic polypeptide (PYY) and hypothalamic GHS-R1α was observed. JF showed no effect on hypothalamic ghrelin, GHS-R1α, and serum total, acylated, and desacylated ghrelin and even further aggravated GLP-1 and PYY. GF could effectively augment hypothalamic AMPK-autophagy-POMC and hypercatabolism. However, JF showed no effect on hypothalamic AMPK-autophagy-POMC and hypercatabolism. CONCLUSIONS GF could activate hypothalamic AMPK-autophagy and suppress POMC expression via gastrointestinal hormones to ameliorate hypercatabolism compared with JF, which suggested that GF may be the preferred route of EN in endotoxemic rats.
Collapse
Affiliation(s)
- Chun Cao
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaohua Li
- Department of Thyroid and Breast Surgery, Suzhou Wuzhong People's Hospital, Suzhou, China
| | - Xiaodong Yang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Fengchan Xi
- Department of Intensive Care Unit, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Tao Gao
- Department of Intensive Care Unit, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Chungen Xing
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wenkui Yu
- Department of Intensive Care Unit, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| |
Collapse
|
5
|
Wang B, Cheng KKY. Hypothalamic AMPK as a Mediator of Hormonal Regulation of Energy Balance. Int J Mol Sci 2018; 19:ijms19113552. [PMID: 30423881 PMCID: PMC6274700 DOI: 10.3390/ijms19113552] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 12/13/2022] Open
Abstract
As a cellular energy sensor and regulator, adenosine monophosphate (AMP)-activated protein kinase (AMPK) plays a pivotal role in the regulation of energy homeostasis in both the central nervous system (CNS) and peripheral organs. Activation of hypothalamic AMPK maintains energy balance by inducing appetite to increase food intake and diminishing adaptive thermogenesis in adipose tissues to reduce energy expenditure in response to food deprivation. Numerous metabolic hormones, such as leptin, adiponectin, ghrelin and insulin, exert their energy regulatory effects through hypothalamic AMPK via integration with the neural circuits. Although activation of AMPK in peripheral tissues is able to promote fatty acid oxidation and insulin sensitivity, its chronic activation in the hypothalamus causes obesity by inducing hyperphagia in both humans and rodents. In this review, we discuss the role of hypothalamic AMPK in mediating hormonal regulation of feeding and adaptive thermogenesis, and summarize the diverse underlying mechanisms by which central AMPK maintains energy homeostasis.
Collapse
Affiliation(s)
- Baile Wang
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.
- Department of Medicine, The University of Hong Kong, Hong Kong, China.
| | - Kenneth King-Yip Cheng
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China.
| |
Collapse
|
6
|
Seo M, Kim J, Moon SS, Hwang JS, Kim MA. Intraventricular administration of Tenebrio molitor larvae extract regulates food intake and body weight in mice with high-fat diet-induced obesity. Nutr Res 2017; 44:18-26. [PMID: 28821314 DOI: 10.1016/j.nutres.2017.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 05/10/2017] [Accepted: 05/12/2017] [Indexed: 11/26/2022]
Abstract
We recently reported the in vitro and in vivo antiobesity effects of Tenebrio molitor larvae, a traditional food in many countries, but it remains unknown how the larvae affect appetite regulation in mice with diet-induced obesity. We hypothesized that the extract of T molitor larvae mediates appetite by regulating neuropeptide expression. We investigated T molitor larvae extract's (TME's) effects on anorexigenesis and endoplasmic reticulum (ER) stress-induced orexigenic neuropeptide expression in the hypothalami of obese mice. Intracerebroventricular TME administration suppressed feeding by down-regulating the expression of the orexigenic neuropeptides neuropeptide Y and agouti-related protein. T molitor larvae extract significantly reduced the expression of ER stress response genes. These results suggest that TME and its bioactive components are potential therapeutics for obesity and ER stress-driven disease states.
Collapse
Affiliation(s)
- Minchul Seo
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Jongwan Kim
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Seong-Su Moon
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Jae-Sam Hwang
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Mi-Ae Kim
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea.
| |
Collapse
|
7
|
Jiao Q, Du X, Li Y, Gong B, Shi L, Tang T, Jiang H. The neurological effects of ghrelin in brain diseases: Beyond metabolic functions. Neurosci Biobehav Rev 2016; 73:98-111. [PMID: 27993602 DOI: 10.1016/j.neubiorev.2016.12.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 12/01/2016] [Accepted: 12/10/2016] [Indexed: 02/08/2023]
Abstract
Ghrelin, a peptide released by the stomach that plays a major role in regulating energy metabolism, has recently been shown to have effects on neurobiological behaviors. Ghrelin enhances neuronal survival by reducing apoptosis, alleviating inflammation and oxidative stress, and accordingly improving mitochondrial function. Ghrelin also stimulates the proliferation, differentiation and migration of neural stem/progenitor cells (NS/PCs). Additionally, the ghrelin is benefit for the recovery of memory, mood and cognitive dysfunction after stroke or traumatic brain injury. Because of its neuroprotective and neurogenic roles, ghrelin may be used as a therapeutic agent in the brain to combat neurodegenerative disease. In this review, we highlight the pre-clinical evidence and the proposed mechanisms underlying the role of ghrelin in physiological and pathological brain function.
Collapse
Affiliation(s)
- Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| | - Yong Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| | - Bing Gong
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China.
| | - Limin Shi
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| | - Tingting Tang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China; Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Qingdao University, Qingdao, China.
| |
Collapse
|
8
|
Torsoni MA, Borges BC, Cote JL, Allen SJ, Mahany E, Garcia-Galiano D, Elias CF. AMPKα2 in Kiss1 Neurons Is Required for Reproductive Adaptations to Acute Metabolic Challenges in Adult Female Mice. Endocrinology 2016; 157:4803-4816. [PMID: 27732087 PMCID: PMC5133340 DOI: 10.1210/en.2016-1367] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A temporary and reversible inhibition of the hypothalamo-pituitary-gonadal axis is adaptive when energy reserves are diminished, allowing individual survival and energy accumulation for eventual reproduction. The AMP-activated protein kinase (AMPK) works as a cellular sensor of the AMP to ATP ratio and ultimately of energy availability. Activation of AMPK suppresses ATP-consuming processes and stimulates ATP-producing pathways. The AMPK α2 catalytic subunit is expressed in multiple hypothalamic nuclei including those associated with reproductive control, ie, the anteroventral periventricular nucleus and the arcuate nucleus. Subsets of kisspeptin neurons in the anteroventral periventricular nucleus (20% in females) and arcuate nucleus (45% in males and 65% in females) coexpress AMPKα2 mRNA. Using the Cre-loxP approach, we assessed whether AMPKα2 in Kiss1 cells is required for body weight and reproductive function. The AMPKα2-deleted mice show no difference in body weight and time for sexual maturation compared with controls. Males and females are fertile and have normal litter size. The AMPKα2-deleted and control females have similar estradiol feedback responses and show no difference in Kiss1 mRNA expression after ovariectomy or ovariectomy plus estradiol replacement. In males, acute fasting decreased Kiss1 mRNA expression in both groups, but no effect was observed in females. However, after an acute fasting, control mice displayed prolonged diestrous phase, but AMPKα2-deleted females showed no disruption of estrous cycles. Our findings demonstrate that the AMPKα2 catalytic subunit in Kiss1 cells is dispensable for body weight and reproductive function in mice but is necessary for the reproductive adaptations to conditions of acute metabolic distress.
Collapse
Affiliation(s)
- Marcio A Torsoni
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - Beatriz C Borges
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - Jessica L Cote
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - Susan J Allen
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - Erica Mahany
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - David Garcia-Galiano
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| | - Carol F Elias
- Laboratory of Metabolism Disorders (M.A.T.), School of Applied Sciences, State University of Campinas, Limeira-SP 13484-350, Brazil; and Department of Molecular and Integrative Physiology (M.A.T., B.C.B., S.J.A., D.G.-G., C.F.E.), Neuroscience Graduate Program (J.L.C.), and Department of Obstetrics and Gynecology (E.M., C.F.E.), University of Michigan, Ann Arbor, Michigan 48109
| |
Collapse
|
9
|
Kim J, Yun EY, Park SW, Goo TW, Seo M. Allomyrina Dichotoma Larvae Regulate Food Intake and Body Weight in High Fat Diet-Induced Obese Mice Through mTOR and Mapk Signaling Pathways. Nutrients 2016; 8:100. [PMID: 26901224 PMCID: PMC4772062 DOI: 10.3390/nu8020100] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 11/24/2022] Open
Abstract
Recent evidence has suggested that the Korean horn beetle (Allomyrina dichotoma) has anti-hepatofibrotic, anti-neoplastic, and antibiotic effects and is recognized as a traditional medicine. In our previous works, Allomyrina dichotoma larvae (ADL) inhibited differentiation of adipocytes both in vitro and in vivo. However, the anorexigenic and endoplasmic reticulum(ER) stress-reducing effects of ADL in obesity has not been examined. In this study, we investigated the anorexigenic and ER stress-reducing effects of ADL in the hypothalamus of diet-induced obese (DIO) mice. Intracerebroventricular (ICV) administration of ethanol extract of ADL (ADE) suggested that an antagonizing effect on ghrelin-induced feeding behavior through the mTOR and MAPK signaling pathways. Especially, ADE resulted in strong reduction of ER stress both in vitro and in vivo. These findings strongly suggest that ADE and its constituent bioactive compounds are available and valuable to use for treatment of various diseases driven by prolonged ER stress.
Collapse
Affiliation(s)
- Jongwan Kim
- Department of Anatomy, Graduate School of Dongguk University College of Medicine, Gyeongju 38066, Korea.
| | - Eun-Young Yun
- Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Wanju-gun 55365, Korea.
| | - Seong-Won Park
- Department of Biotechnology, Catholic University of Daegu, Daegu 38430, Korea.
| | - Tae-Won Goo
- Department of Biochemistry, Dongguk University College of Medicine, Gyeongju 38066, Korea.
| | - Minchul Seo
- Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Wanju-gun 55365, Korea.
| |
Collapse
|
10
|
Izumi K, Nakato R, Zhang Z, Edmondson AC, Noon S, Dulik MC, Rajagopalan R, Venditti CP, Gripp K, Samanich J, Zackai EH, Deardorff MA, Clark D, Allen JL, Dorsett D, Misulovin Z, Komata M, Bando M, Kaur M, Katou Y, Shirahige K, Krantz ID. Germline gain-of-function mutations in AFF4 cause a developmental syndrome functionally linking the super elongation complex and cohesin. Nat Genet 2015; 47:338-44. [PMID: 25730767 PMCID: PMC4380798 DOI: 10.1038/ng.3229] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 01/30/2015] [Indexed: 12/16/2022]
Abstract
Transcriptional elongation is critical for gene expression regulation during embryogenesis. The super elongation complex (SEC) governs this process by mobilizing paused RNA polymerase II (RNAP2). Using exome sequencing, we discovered missense mutations in AFF4, a core component of the SEC, in three unrelated probands with a new syndrome that phenotypically overlaps Cornelia de Lange syndrome (CdLS) that we have named CHOPS syndrome (C for cognitive impairment and coarse facies, H for heart defects, O for obesity, P for pulmonary involvement and S for short stature and skeletal dysplasia). Transcriptome and chromatin immunoprecipitation sequencing (ChIP-seq) analyses demonstrated similar alterations of genome-wide binding of AFF4, cohesin and RNAP2 in CdLS and CHOPS syndrome. Direct molecular interaction of the SEC, cohesin and RNAP2 was demonstrated. These data support a common molecular pathogenesis for CHOPS syndrome and CdLS caused by disturbance of transcriptional elongation due to alterations in genome-wide binding of AFF4 and cohesin.
Collapse
Affiliation(s)
- Kosuke Izumi
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
| | - Ryuichiro Nakato
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
| | - Zhe Zhang
- Center for Biomedical Informatics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Andrew C. Edmondson
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Sarah Noon
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Matthew C. Dulik
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ramkakrishnan Rajagopalan
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | | | - Karen Gripp
- Division of Medical Genetics, A. I. duPont Hospital for Children, Wilmington, Delaware
| | - Joy Samanich
- Division of Genetics, Department of Pediatrics, Montefiore Medical Center, Bronx, NY
| | - Elaine H. Zackai
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Matthew A. Deardorff
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Dinah Clark
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Julian L. Allen
- The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Division of Pulmonary Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Dale Dorsett
- Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Ziva Misulovin
- Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Makiko Komata
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
| | - Masashige Bando
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
| | - Maninder Kaur
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Yuki Katou
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
| | - Katsuhiko Shirahige
- Research Center for Epigenetic Disease, Institute for Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Ian D. Krantz
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, Pennsylvania, USA
| |
Collapse
|
11
|
Macaulay AD, Gilbert I, Caballero J, Barreto R, Fournier E, Tossou P, Sirard MA, Clarke HJ, Khandjian ÉW, Richard FJ, Hyttel P, Robert C. The gametic synapse: RNA transfer to the bovine oocyte. Biol Reprod 2014; 91:90. [PMID: 25143353 DOI: 10.1095/biolreprod.114.119867] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Even after several decades of quiescent storage in the ovary, the female germ cell is capable of reinitiating transcription to build the reserves that are essential to support early embryonic development. In the current model of mammalian oogenesis, there exists bilateral communication between the gamete and the surrounding cells that is limited to paracrine signaling and direct transfer of small molecules via gap junctions existing at the end of the somatic cells' projections that are in contact with the oolemma. The purpose of this work was to explore the role of cumulus cell projections as a means of conductance of large molecules, including RNA, to the mammalian oocyte. By studying nascent RNA with confocal and transmission electron microscopy in combination with transcript detection, we show that the somatic cells surrounding the fully grown bovine oocyte contribute to the maternal reserves by actively transferring large cargo, including mRNA and long noncoding RNA. This occurrence was further demonstrated by the reconstruction of cumulus-oocyte complexes with transfected cumulus cells transferring a synthetic transcript. We propose selective transfer of transcripts occurs, the delivery of which is supported by a remarkable synapselike vesicular trafficking connection between the cumulus cells and the gamete. This unexpected exogenous contribution to the maternal stores offers a new perspective on the determinants of female fertility.
Collapse
Affiliation(s)
- Angus D Macaulay
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Isabelle Gilbert
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Julieta Caballero
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Rodrigo Barreto
- Veterinarian Medicine Department, São Paulo University, São Paulo, Brazil
| | - Eric Fournier
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Prudencio Tossou
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Marc-André Sirard
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Hugh J Clarke
- Department of Obstetrics and Gynecology, McGill University Health Centre, Montréal, Québec, Canada
| | - Édouard W Khandjian
- Département de Psychiatrie et Neurosciences, Institut universitaire en santé mentale de Québec, Université Laval, Québec City, Québec, Canada
| | - Francois J Richard
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| | - Poul Hyttel
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Claude Robert
- Département des sciences animales, Centre de recherche en biologie de la reproduction, Institut sur la nutrition et les aliments fonctionnels, Université Laval, Québec City, Québec, Canada
| |
Collapse
|
12
|
Komori T, Tanaka M, Senba E, Miyajima A, Morikawa Y. Deficiency of oncostatin M receptor β (OSMRβ) exacerbates high-fat diet-induced obesity and related metabolic disorders in mice. J Biol Chem 2014; 289:13821-37. [PMID: 24695736 DOI: 10.1074/jbc.m113.542399] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Oncostatin M (OSM) belongs to the IL-6 family of cytokines and has diverse biological effects, including the modulation of inflammatory responses. In the present study we analyzed the roles of OSM signaling in obesity and related metabolic disorders. Under a high-fat diet condition, OSM receptor β subunit-deficient (OSMRβ(-/-)) mice exhibited increases in body weight and food intake compared with those observed in WT mice. In addition, adipose tissue inflammation, insulin resistance, and hepatic steatosis were more severe in OSMRβ(-/-) mice than in wild-type (WT) mice. These metabolic phenotypes did not improve when OSMRβ(-/-) mice were pair-fed with WT mice, suggesting that the effects of OSM signaling on these phenotypes are independent of the increases in the body weight and food intake. In the liver of OSMRβ(-/-) mice, the insulin-induced phosphorylation of p70 S6 kinase remained intact, whereas insulin-induced FOXO1 phosphorylation was impaired. In addition, OSMRβ(-/-) mice displayed a higher expression of genes related to de novo lipogenesis in the liver than WT mice. Furthermore, treatment of genetically obese ob/ob mice with OSM improved insulin resistance, adipose tissue inflammation, and hepatic steatosis. Intraportal administration of OSM into ob/ob mice activated STAT3 and increased the expression of long-chain acyl-CoA synthetase (ACSL) 3 and ACSL5 with decreased expression of fatty acid synthase in the liver, suggesting that OSM directly induces lipolysis and suppresses lipogenesis in the liver of obese mice. These findings suggest that defects in OSM signaling promote the deterioration of high-fat diet-induced obesity and related metabolic disorders.
Collapse
Affiliation(s)
- Tadasuke Komori
- From the Department of Anatomy and Neurobiology, Wakayama Medical University, Wakayama 641-8509, Japan and
| | - Minoru Tanaka
- Laboratory of Cell Growth and Differentiation, Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo 113-0032, Japan
| | - Emiko Senba
- From the Department of Anatomy and Neurobiology, Wakayama Medical University, Wakayama 641-8509, Japan and
| | - Atsushi Miyajima
- Laboratory of Cell Growth and Differentiation, Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo 113-0032, Japan
| | - Yoshihiro Morikawa
- From the Department of Anatomy and Neurobiology, Wakayama Medical University, Wakayama 641-8509, Japan and
| |
Collapse
|