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Mondal S, Rathor R, Singh SN, Suryakumar G. miRNA and leptin signaling in metabolic diseases and at extreme environments. Pharmacol Res Perspect 2024; 12:e1248. [PMID: 39017237 PMCID: PMC11253706 DOI: 10.1002/prp2.1248] [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: 01/01/2024] [Revised: 05/27/2024] [Accepted: 07/04/2024] [Indexed: 07/18/2024] Open
Abstract
The burden of growing concern about the dysregulation of metabolic processes arises due to complex interplay between environment and nutrition that has great impact on genetics and epigenetics of an individual. Thereby, any abnormality at the level of food intake regulating hormones may contribute to the development of metabolic diseases in any age group due to malnutrition, overweight, changing lifestyle, and exposure to extreme environments such as heat stress (HS), cold stress, or high altitude (HA). Hormones such as leptin, adiponectin, ghrelin, and cholecystokinin regulate appetite and satiety to maintain energy homeostasis. Leptin, an adipokine and a pleiotropic hormone, play major role in regulating the food intake, energy gain and energy expenditure. Using in silico approach, we have identified the major genes (LEP, LEPR, JAK2, STAT3, NPY, POMC, IRS1, SOCS3) that play crucial role in leptin signaling pathway. Further, eight miRNAs (hsa-miR-204-5p, hsa-miR-211-5p, hsa-miR-30, hsa-miR-3163, hsa-miR-33a-3p, hsa-miR-548, hsa-miR-561-3p, hsa-miR-7856-5p) from TargetScan 8.0 database were screened out that commonly target these genes. The role of these miRNAs should be explored as they might play vital role in regulating the appetite, energy metabolism, metabolic diseases (obesity, type 2 diabetes, cardiovascular diseases, inflammation), and to combat extreme environments. The miRNAs regulating leptin signaling and appetite may be useful for developing novel therapeutics for metabolic diseases.
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Affiliation(s)
- Samrita Mondal
- Defence Institute of Physiology and Allied SciencesDelhiIndia
| | - Richa Rathor
- Defence Institute of Physiology and Allied SciencesDelhiIndia
| | - Som Nath Singh
- Defence Institute of Physiology and Allied SciencesDelhiIndia
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2
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Ye Y, Xie W, Ma Z, Wang X, Wen Y, Li X, Qi H, Wu H, An J, Jiang Y, Lu X, Chen G, Hu S, Blaber EA, Chen X, Chang L, Zhang W. Conserved mechanisms of self-renewal and pluripotency in mouse and human ESCs regulated by simulated microgravity using a 3D clinostat. Cell Death Discov 2024; 10:68. [PMID: 38336777 PMCID: PMC10858198 DOI: 10.1038/s41420-024-01846-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Embryonic stem cells (ESCs) exhibit unique attributes of boundless self-renewal and pluripotency, making them invaluable for fundamental investigations and clinical endeavors. Previous examinations of microgravity effects on ESC self-renewal and differentiation have predominantly maintained a descriptive nature, constrained by limited experimental opportunities and techniques. In this investigation, we present compelling evidence derived from murine and human ESCs, demonstrating that simulated microgravity (SMG)-induced stress significantly impacts self-renewal and pluripotency through a previously unidentified conserved mechanism. Specifically, SMG induces the upregulation of heat shock protein genes, subsequently enhancing the expression of core pluripotency factors and activating the Wnt and/or LIF/STAT3 signaling pathways, thereby fostering ESC self-renewal. Notably, heightened Wnt pathway activity, facilitated by Tbx3 upregulation, prompts mesoendodermal differentiation in both murine and human ESCs under SMG conditions. Recognizing potential disparities between terrestrial SMG simulations and authentic microgravity, forthcoming space flight experiments are imperative to validate the impact of reduced gravity on ESC self-renewal and differentiation mechanisms.
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Affiliation(s)
- Ying Ye
- Medical College of Soochow University, Suzhou, China
| | - Wenyan Xie
- Medical College of Soochow University, Suzhou, China
| | - Zhaoru Ma
- Medical College of Soochow University, Suzhou, China
| | - Xuepeng Wang
- Medical College of Soochow University, Suzhou, China
| | - Yi Wen
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China
| | - Xuemei Li
- School of Basic Medical Sciences, Binzhou Medical University, Yantai, China
| | - Hongqian Qi
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, Tianjin, 300350, China
| | - Hao Wu
- Medical College of Soochow University, Suzhou, China
| | - Jinnan An
- Institute of Blood and Marrow Transplantation, Medical College of Soochow University, Suzhou, China
| | - Yan Jiang
- School of Biology and Basic Medical Sciences, Medical College of Soochow University, Suzhou, China
| | - Xinyi Lu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, Tianjin, 300350, China
| | - Guokai Chen
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macao SAR, China
| | - Shijun Hu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215000, China.
| | - Elizabeth A Blaber
- Department of Biomedical Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Xi Chen
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China.
| | - Lei Chang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Jiangsu Province International Joint Laboratory For Regeneration Medicine, Medical College of Soochow University, Suzhou, China.
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3
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Gong T, Zhou Y, Zhang L, Wang H, Zhang M, Liu X. Capsaicin combined with dietary fiber prevents high-fat diet associated aberrant lipid metabolism by improving the structure of intestinal flora. Food Sci Nutr 2023; 11:114-125. [PMID: 36655087 PMCID: PMC9834886 DOI: 10.1002/fsn3.3043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/25/2022] [Accepted: 08/22/2022] [Indexed: 01/21/2023] Open
Abstract
Capsaicin (CAP) and dietary fibers are natural active ingredients that given separately do positively affect obesity and metabolic diseases. However, it was unknown whether their combined administration might further improve blood lipids and gut flora composition. To test this hypothesis we administered capsaicin plus dietary fibers (CAP + DFs) to male rats on a high-fat diet and analyzed any changes in the intestinal microbiota make up, metabolites, and blood indexes. Our results showed that combining CAP with dietary fibers more intensely reduced total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C). CAP + DFs also increased gut bacteria variety, and the abundance of several beneficial bacterial strains, including Allobaculum and Akkermansia, while reducing harmful strains such as Desulfovibrio. Additionally, CAP + DFs significantly increased arginine levels and caused short-chain fatty acids accumulation in the contents of the cecal portion of rats' gut. In conclusion, notwithstanding the rats were kept on a high-fat diet, adding CAP + DFs to the chow further improved, as compared with CAP alone, the lipidemia and increased the gut beneficial bacterial strains, while reducing the harmful ones.
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Affiliation(s)
- Ting Gong
- College of Food ScienceSouthwest UniversityChongqingPeople's Republic of China
- Chongqing Medical and Pharmaceutical CollegeChongqingPeople's Republic of China
| | - Yujing Zhou
- Chongqing Medical and Pharmaceutical CollegeChongqingPeople's Republic of China
| | - Lei Zhang
- College of Life ScienceChongqing Normal UniversityChongqingPeople's Republic of China
| | - Haizhu Wang
- Chongqing Medical and Pharmaceutical CollegeChongqingPeople's Republic of China
| | - Min Zhang
- Chongqing Medical and Pharmaceutical CollegeChongqingPeople's Republic of China
| | - Xiong Liu
- College of Food ScienceSouthwest UniversityChongqingPeople's Republic of China
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Brugaletta G, Greene E, Ramser A, Maynard CW, Tabler TW, Sirri F, Anthony NB, Orlowski S, Dridi S. Effect of Cyclic Heat Stress on Hypothalamic Oxygen Homeostasis and Inflammatory State in the Jungle Fowl and Three Broiler-Based Research Lines. Front Vet Sci 2022; 9:905225. [PMID: 35692291 PMCID: PMC9174949 DOI: 10.3389/fvets.2022.905225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 04/20/2022] [Indexed: 11/23/2022] Open
Abstract
Heat stress (HS) is devastating to poultry production sustainability due its detrimental effects on performance, welfare, meat quality, and profitability. One of the most known negative effects of HS is feed intake depression, which is more pronounced in modern high-performing broilers compared to their ancestor unselected birds, yet the underlying molecular mechanisms are not fully defined. The present study aimed, therefore, to determine the hypothalamic expression of a newly involved pathway, hypoxia/oxygen homeostasis, in heat-stressed broiler-based research lines and jungle fowl. Three populations of broilers (slow growing ACRB developed in 1956, moderate growing 95RB from broilers available in 1995, and modern fast growing MRB from 2015) and unselected Jungle fowl birds were exposed to cyclic heat stress (36°C, 9 h/day for 4 weeks) in a 2 × 4 factorial experimental design. Total RNAs and proteins were extracted from the hypothalamic tissues and the expression of target genes and proteins was determined by real-time quantitative PCR and Western blot, respectively. It has been previously shown that HS increased core body temperature and decreased feed intake in 95RB and MRB, but not in ACRB or JF. HS exposure did not affect the hypothalamic expression of HIF complex, however there was a line effect for HIF-1α (P = 0.02) with higher expression in JF under heat stress. HS significantly up regulated the hypothalamic expression of hemoglobin subunits (HBA1, HBBR, HBE, HBZ), and HJV in ACRB, HBA1 and HJV in 95RB and MRB, and HJV in JF, but it down regulated FPN1 in JF. Additionally, HS altered the hypothalamic expression of oxygen homeostasis- up and down-stream signaling cascades. Phospho-AMPKThr172 was activated by HS in JF hypothalamus, but it decreased in that of the broiler-based research lines. Under thermoneutral conditions, p-AMPKThr172 was higher in broiler-based research lines compared to JF. Ribosomal protein S6K1, however, was significantly upregulated in 95RB and MRB under both environmental conditions. HS significantly upregulated the hypothalamic expression of NF-κB2 in MRB, RelB, and TNFα in ACRB, abut it down regulated RelA in 95RB. The regulation of HSPs by HS seems to be family- and line-dependent. HS upregulated the hypothalamic expression of HSP60 in ACRB and 95RB, down regulated HSP90 in JF only, and decreased HSP70 in all studied lines. Taken together, this is the first report showing that HS modulated the hypothalamic expression of hypoxia- and oxygen homeostasis-associated genes as well as their up- and down-stream mediators in chickens, and suggests that hypoxia, thermotolerance, and feed intake are interconnected, which merit further in-depth investigations.
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Affiliation(s)
- Giorgio Brugaletta
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
- Department of Agricultural and Food Sciences, Alma Mater Studiorum – University of Bologna, Bologna, Italy
| | - Elizabeth Greene
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Alison Ramser
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Craig W. Maynard
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Travis W. Tabler
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Federico Sirri
- Department of Agricultural and Food Sciences, Alma Mater Studiorum – University of Bologna, Bologna, Italy
| | - Nicholas B. Anthony
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Sara Orlowski
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Sami Dridi
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
- *Correspondence: Sami Dridi
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5
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Greene ES, Cauble R, Kadhim H, de Almeida Mallmann B, Gu I, Lee SO, Orlowski S, Dridi S. Protective effects of the phytogenic feed additive "comfort" on growth performance via modulation of hypothalamic feeding- and drinking-related neuropeptides in cyclic heat-stressed broilers. Domest Anim Endocrinol 2021; 74:106487. [PMID: 32861191 DOI: 10.1016/j.domaniend.2020.106487] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 12/14/2022]
Abstract
Identification of alternatives to antibiotics in livestock and poultry is necessary. Fueled by consumer preferences, phytogenic feed additives are increasingly used in the food system; however, their mode of action is not well defined. Here, we used broiler chickens, in which appetite and feeding behavior regulation are controlled by complex mechanisms, to determine the effect of the phytogenic feed additive "comfort" (PFA-C) as well as its underlying molecular mechanisms on growth performance in heat-stressed broiler chickens. Heat stress significantly increased birds' core body temperature, water intake, and the hypothalamic expression of heat shock protein (HSP) 70, whereas it decreased feed intake, BW, and woody breast incidence. Phytogenic feed additive "comfort" supplementation downregulated the hypothalamic expression of HSP70, reduced core body temperature, increased feed and water intake, and improved BW in HS broilers. At molecular levels, the effect of PFA-C on growth performance seemed to be mediated by modulation of hypothalamic expression of melanocortin receptor 2, arginine vasopressin, aquaporin 2, and sodium and potassium-transporting ATPase subunit beta 1 polypeptides. In summary, PFA-C supplementation ameliorates heat stress productivity losses via a potential cytoprotective effect, reduction of hypothalamic intracellular stress, and modulation of hypothalamic feeding- and drinking-related polypeptide expression.
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Affiliation(s)
- E S Greene
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - R Cauble
- Department of Animal Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - H Kadhim
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - B de Almeida Mallmann
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - I Gu
- Department of Food Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - S-O Lee
- Department of Food Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - S Orlowski
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - S Dridi
- Department of Poultry Science, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
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6
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Li X, Shi W, Wu G, Qin X, Wan G, Zeng Q, Hu Y. OB-RGRP regulates the phosphorylation of JAK2 and STAT3 in primary rat adipocytes. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:3664-3670. [PMID: 31841394 DOI: 10.1080/21691401.2019.1632322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This study aimed to explore the role of obestatin R gene-related protein (OB-RGRP) in autocrine signal transduction of adipocytes. Primary rat adipocytes were isolated and verified by microscopic observation and oil red O staining. OB-RGRP expression vector and OB-RGRP siRNA (si-OB-RGRP) were constructed and transfected into adipocytes. Adipocytes were then divided into five groups: (1) Control; (2) Vector (empty expression vector); (3) OB-RGRP (OB-RGRP expression vector); (4) si-OB-RGRP NC (si-OB-RGRP negative control); (5) si-OB-RGRP. mRNA and protein levels of OB-RGRP, JAK2, phosphorylated JAK2 (p-JAK2), STAT3 and phosphorylated STAT3 (p-STAT3) were examined using RT-PCR and western blot, respectively. Results showed that mRNA and protein levels of OB-RGRP in the Vector and si-OB-RGRP NC groups were similar to those in the Control group. Their levels in the si-OB-RGRP and OB-RGRP groups were significantly down-regulated and up-regulated (p < .05), respectively, in comparison with the control cells. There was no significant difference in the mRNA and protein levels of JAK2 and STAT3 among various groups. Moreover, the si-OB-RGRP NC and Vector groups induced similar ratios of p-JAK2 to JAK2 (p-JAK2/JAK2) and p-STAT3 to STAT3 (p-STAT3/STAT3) to the Control group. However, these two ratios in the si-OB-RGRP and OB-RGRP groups were significantly reduced and elevated (p < .05), respectively, in comparison with the Control group. These results suggested that OB-RGRP overexpression enhanced the levels of p-JAK2 and p-STAT3 while OB-RGRP silencing lowered their levels. In conclusion, OB-RGRP regulated the phosphorylation of JAK2 and STAT3 in primary rat adipocytes.
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Affiliation(s)
- Xiaolin Li
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Weihong Shi
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Guohui Wu
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Xu Qin
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Guanqun Wan
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Qi Zeng
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Yungang Hu
- Department of Oral and Maxillofacial Surgery, Jiangxi Provincial People's Hospital, Nanchang, China
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Sun CY, Nie J, Huang JP, Zheng GJ, Feng B. Targeting STAT3 inhibition to reverse cisplatin resistance. Biomed Pharmacother 2019; 117:109135. [DOI: 10.1016/j.biopha.2019.109135] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 12/21/2022] Open
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8
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Lee YC, Kurtova AV, Xiao J, Nikolos F, Hayashi K, Tramel Z, Jain A, Chen F, Chokshi M, Lee C, Bao G, Zhang X, Shen J, Mo Q, Jung SY, Rowley D, Chan KS. Collagen-rich airway smooth muscle cells are a metastatic niche for tumor colonization in the lung. Nat Commun 2019; 10:2131. [PMID: 31086186 PMCID: PMC6513865 DOI: 10.1038/s41467-019-09878-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/27/2019] [Indexed: 01/04/2023] Open
Abstract
Metastases account for the majority of cancer deaths. While certain steps of the metastatic cascade are well characterized, identification of targets to block this process remains a challenge. Host factors determining metastatic colonization to secondary organs are particularly important for exploration, as those might be shared among different cancer types. Here, we showed that bladder tumor cells expressing the collagen receptor, CD167a, responded to collagen I stimulation at the primary tumor to promote local invasion and utilized the same receptor to preferentially colonize at airway smooth muscle cells (ASMCs)—a rich source of collagen III in lung. Morphologically, COL3-CD167a-driven metastatic foci are uniquely distinct from typical lung alveolar metastatic lesions and exhibited activation of the CD167a-HSP90-Stat3 axis. Importantly, metastatic lung colonization could be abrogated using an investigational drug that attenuates Stat3 activity, implicating this seed-and-soil interaction as a therapeutic target for eliminating lung metastasis. Collagen is a dynamic component of both the tumor and metastatic niche. Here, the authors show that airway smooth muscle cells are a collagen III rich niche bladder cancer cells expressing CD167a, and Stat3 is a downstream target for abrogating these collagen III/CD167a-driven metastatic foci.
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Affiliation(s)
- Yu-Cheng Lee
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Antonina V Kurtova
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jing Xiao
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Fotis Nikolos
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kazukuni Hayashi
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Zoe Tramel
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Antrix Jain
- Department of Biochemistry and Molecular Biology, Mass Spectrometry Proteomics Core, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Fengju Chen
- Dan L Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Mithil Chokshi
- Department of Bioengineering, Rice University Houston, Houston, TX, 77030, USA
| | - Ciaran Lee
- Department of Bioengineering, Rice University Houston, Houston, TX, 77030, USA
| | - Gang Bao
- Department of Bioengineering, Rice University Houston, Houston, TX, 77030, USA
| | - Xiang Zhang
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jianjun Shen
- University of Texas M.D. Anderson Cancer Center, Houston, TX, 77030, USA
| | - Qianxing Mo
- Department of Biostatistics & Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, 33612, USA
| | - Sung Yun Jung
- Department of Biochemistry and Molecular Biology, Mass Spectrometry Proteomics Core, Baylor College of Medicine, Houston, TX, 77030, USA
| | - David Rowley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Keith Syson Chan
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Dan L Duncan Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
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He GL, Luo Z, Shen TT, Yang J, Li P, Luo X, Yang XS. Inhibition of HSP90β by ganetespib blocks the microglial signalling of evoked pro-inflammatory responses to heat shock. Int J Biochem Cell Biol 2019; 106:35-45. [PMID: 30448425 DOI: 10.1016/j.biocel.2018.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 11/02/2018] [Accepted: 11/06/2018] [Indexed: 12/16/2022]
Abstract
Although microglial reaction to heat shock is considered to be protective, heat shock is still a potential hazard caused by high temperatures. Recent studies indicate that the inhibition of the 90-kDa heat shock protein (HSP90) increasing the protective heat shock response and suppressing inflammatory signalling pathways in several diseases. Nevertheless, the effects of heat shock on microglial pro-inflammatory responses are not completely identical. Here, we aim to investigate the effect of the HSP90 inhibitor ganetespib on microglial pro-inflammatory responses following heat shock. HSP90 isoforms were determined by transfecting N9 microglial cells (N9 cells) with enzymatically prepared siRNA (esiRNAs). We found that heat shock significantly increased the secretion of tumour necrosis factor alpha (TNF-α), interleukin (IL)-1β, IL-6 and nitric oxide (NO), and the phosphorylation of extracellular signal-regulated kinase (ERK), Janus-activated kinase 2 (JAK2), signal transducer and activator of transcription 3 (STAT3), nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor alpha (IκB-α) and p65 nuclear factor kappa-light-chain-enhancer of activated B cells (p65 NF-κB) in N9 cells. These increases, except for phospho-p65, were attenuated efficiently in a dose-dependent manner by ganetespib pretreatment. Furthermore, the suppression of heat shock-evoked cytokines and NO production, and the phosphorylation of ERK, JAK2 and STAT3 in cytosols and/or nuclei were also observed by administering esiRNA HSP90β, but not HSP90α, in heat shock-treated N9 cells. Taken together, our findings demonstrate that the HSP90 inhibitor ganetespib blocks pro-inflammatory responses in heat shock-treated N9 cells via a signalling mechanism involving HSP90β and STAT3.
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Affiliation(s)
- Gen-Lin He
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Zhen Luo
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Ting-Ting Shen
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Ju Yang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Ping Li
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Xue Luo
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China
| | - Xue-Sen Yang
- Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing 400038, People's Republic of China.
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10
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Chu SC, Chen PN, Chen JR, Yu CH, Hsieh YS, Kuo DY. Role of hypothalamic leptin-LepRb signaling in NPY-CART-mediated appetite suppression in amphetamine-treated rats. Horm Behav 2018; 98:173-182. [PMID: 29307696 DOI: 10.1016/j.yhbeh.2017.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/22/2017] [Accepted: 12/29/2017] [Indexed: 12/15/2022]
Abstract
Leptin is an adipose tissue hormone which plays an important role in regulating energy homeostasis. Amphetamine (AMPH) is a drug of appetite suppressant, which exerts its effect by decreasing the expression of hypothalamic neuropeptide Y (NPY) and increasing that of cocaine- and amphetamine-regulated transcript (CART). This study investigated whether leptin, the leptin receptor (LepRb) and the signal transducer and activator of transcription-3 (STAT3) were involved in NPY/CART-mediated appetite suppression in AMPH-treated rats. Rats were given AMPH daily for four days, and changes in the levels of blood leptin and hypothalamic NPY, CART, LepRb, Janus kinases 2 (JAK2), and STAT3 were assessed and compared. During the AMPH treatment, blood leptin levels and hypothalamic NPY expression decreased, with the largest reduction observed on Day 2. By contrast, the expression of hypothalamic CART, LepRb, JAK2, and STAT3 increased, with the maximum response on Day 2. Furthermore, the binding activity of pSTAT3/DNA increased and was expressed in similar pattern to that of CART, LepRb, and JAK2. An intracerebroventricular infusion of NPY antisense 60min prior to AMPH treatment increased the levels of leptin, as well as the expression in LepRb, JAK2, and CART, whereas an infusion of STAT3 antisense decreased these levels and the expression of these parameters. The results suggest that blood leptin and hypothalamic LepRb-JAK2-STAT3 signaling involved in NPY-CART-regulated appetite suppression in AMPH-treated rats. The findings may aid understanding the role of leptin-LepRb during the treatment of anorectic drugs.
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Affiliation(s)
- Shu-Chen Chu
- Department of Food Science, Central Taiwan University of Science and Technology, Taichung City 406, Taiwan
| | - Pei-Ni Chen
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Jeng-Rung Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung City 40201, Taiwan
| | - Ching-Han Yu
- Department of Physiology, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Yih-Shou Hsieh
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Dong-Yih Kuo
- Department of Physiology, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan.
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Abstract
Chronic kidney diseases (CKD), a common outcome of various kidney diseases, cause a series of refractory complications, which lead to great economic burdens on patients. The clinical outcomes of CKD depend on various factors, including metabolic disorders. Leptin, a peptide hormone, produced in adipose tissues, plays an important role in regulating food consumption and energy expenditure. Leptin also influences the immune system and hematopoiesis. Increased leptin status is observed in CKD, leptin deficiency attenuates the immune response in nephritis. Conversely, leptin inhibits the development of obesity, which is closely associated glomerular disorder. Now, the precise role of leptin in CKD remains elusive. This review will give an integrated understanding of the potential role of leptin and its interactions with other signal molecules in CKD.
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Affiliation(s)
- Song Mao
- a Department of Pediatrics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai , China
| | - Li Fang
- a Department of Pediatrics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai , China
| | - Fen Liu
- a Department of Pediatrics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai , China
| | - Siqiong Jiang
- a Department of Pediatrics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai , China
| | - Liangxia Wu
- a Department of Pediatrics , Shanghai Jiao Tong University Affiliated Sixth People's Hospital , Shanghai , China
| | - Jianhua Zhang
- b Department of Pediatrics, Xinhua Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , China
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Hyponatremia and V2 vasopressin receptor upregulation: a result of HSP90 inhibition. Cancer Chemother Pharmacol 2017; 80:673-684. [PMID: 28779264 PMCID: PMC5608778 DOI: 10.1007/s00280-017-3390-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/11/2017] [Indexed: 01/16/2023]
Abstract
Purpose
Small-molecule inhibitors of heat-shock protein 90 (HSP90) have been under development as chemotherapeutic agents. The adverse events reported from early clinical trials included hyponatremia. Given the limited number of patients enrolled, the number of hyponatremia incidents was remarkable and repeatedly, the event was judged as severe. Inappropriate V2 vasopressin receptor stimulation is an established cause of hyponatremia. We explored the hypothesis that HSP90 inhibition produces hypersensitivity to vasopressin by upregulating V2-receptors. Methods Experiments were carried out in cell culture using HEK293 cells with heterologous expression of the human V2-receptor and HELA cells with an endogenous V2-receptor complement. We tested the effect of HSP90 inhibition by three structurally unrelated compounds (alvespimycin, luminespib, radicicol) and asserted its specificity in cells depleted of cytosolic HSP90 (by RNA interference). Assays encompassed surface V2-receptor density and vasopressin-stimulated formation of cyclic AMP (cAMP). Results The results demonstrate a twofold increase in cell-surface receptor density following pre-incubation with each of the HSP90 inhibitors. The effect had a concentration-dependence consistent with the individual potencies to inhibit HSP90. Similarly, depletion of cytosolic HSP90 increased surface-receptor density and at the same time, reduced the inhibitor effect. Upregulated V2-receptors were fully functional; hence, in culture treated with an HSP90 inhibitor, addition of vasopressin resulted in higher levels of cAMP than in controls. Conclusion Since formation of cAMP is the first signalling step in raising water permeability of the collecting duct epithelia, we suggest that V2-receptor upregulation generates hypersensitivity to vasopressin linking HSP90 inhibition to the development of hyponatremia.
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Hosoi T, Kohda T, Matsuzaki S, Ishiguchi M, Kuwamura A, Akita T, Tanaka J, Ozawa K. Key role of heat shock protein 90 in leptin-induced STAT3 activation and feeding regulation. Br J Pharmacol 2016; 173:2434-45. [PMID: 27205876 DOI: 10.1111/bph.13520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 05/16/2016] [Accepted: 05/17/2016] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND AND PURPOSE Leptin, an important regulator of the energy balance, acts on the brain to inhibit feeding. However, the mechanisms involved in leptin signalling have not yet been fully elucidated. Heat shock protein 90 (HSP90) is a molecular chaperone that is involved in regulating cellular homeostasis. In the present study, we investigated the possible involvement of HSP90 in leptin signal transduction. EXPERIMENTAL APPROACH HEK293 and SH-SY5Y cell lines stably transfected with the Ob-Rb leptin receptor (HEK293 Ob-Rb, SH-SY5Y Ob-Rb) were used in the present study. Phosphorylation of JAK2 and STAT3 was analysed by western blotting. An HSP90 inhibitor was administered i.c.v. into rats and their food intake was analysed. KEY RESULTS The knock-down of HSP90 in the HEK293 Ob-Rb cell line attenuated leptin-induced JAK2 and STAT3 signalling. Moreover, leptin-induced JAK2/STAT3 phosphorylation was markedly attenuated by the HSP90 inhibitors geldanamycin, radicicol and novobiocin. However, these effects were not mediated through previously known factors, which are known to be involved in the development of leptin resistance, such as suppressor of cytokine signalling 3 or endoplasmic reticulum stress. The infusion of an HSP90 inhibitor into the CNS blunted the anorexigenic actions of leptin in rats (male Wister rat). CONCLUSIONS AND IMPLICATIONS HSP90 may be a novel factor involved in leptin-mediated signalling that is linked to anorexia.
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Affiliation(s)
- Toru Hosoi
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Toshiko Kohda
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Syu Matsuzaki
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mizuho Ishiguchi
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ayaka Kuwamura
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoyuki Akita
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Junko Tanaka
- Department of Epidemiology, Infectious Disease Control and Prevention, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Koichiro Ozawa
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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