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Yang C, Yang L, Yang L, Li S, Ye L, Ye J, Chen C, Zeng Y, Zhu M, Lin X, Peng Q, Wang Y, Jin M. Plasma Proteomics Study Between the Frequent Exacerbation and Infrequent Exacerbation Phenotypes of Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2023; 18:1713-1728. [PMID: 37581107 PMCID: PMC10423573 DOI: 10.2147/copd.s408361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 07/09/2023] [Indexed: 08/16/2023] Open
Abstract
Background Frequent exacerbation (FE) and infrequent exacerbation (IE) are two phenotypes of chronic obstructive pulmonary disease (COPD), of which FE is associated with a higher incidence of exacerbation and a serious threat to human health. Because the pathogenesis mechanisms of FE are unclear, this study aims to identify FE-related proteins in the plasma via proteomics for use as predictive, diagnostic, and therapeutic biomarkers of COPD. Methods A cross-sectional study was conducted in which plasma protein profiles were analyzed in COPD patients at stable stage, and differentially expressed proteins (DEPs) were screened out between the FE and IE patients. FE-related DEPs were identified using data-independent acquisition-based proteomics and bioinformatics analyses. In addition, FE-related candidates were verified by enzyme-linked immunosorbent assay. Results In this study, 47 DEPs were screened out between the FE and IE groups, including 20 upregulated and 27 downregulated proteins. Key biological functions (eg, neutrophil degranulation, extracellular exosome, protein homodimerization activity) and signaling pathways (eg, arginine and proline metabolism) were enriched in association with the FE phenotype. Receiver operating characteristic (ROC) analysis of the 11 combined DEPs revealed an area under the curve of 0.985 (p <0.05) for discriminating FE from IE. Moreover, correlation and ROC curve analyses indicated that creatine kinase, M-type (CKM) and fat storage-inducing transmembrane protein 1 (FITM1) might be clinically significant in patients with the FE phenotype. In addition, plasma expression levels of CKM and FITM1 were validated to be significantly decreased in the FE group compared with the IE group (CKM: p <0.01; FITM1: p <0.05). Conclusion In this study, novel insights into COPD pathogenesis were provided by investigating and comparing plasma protein profiles between the FE and IE patients. CKM, FITM1, and a combinative biomarker panel may serve as useful tools for assisting in the precision diagnosis and effective treatment of the FE phenotype of COPD.
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Affiliation(s)
- Chengyu Yang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
- Department of Pulmonary and Critical Care Medicine, Huadong Hospital, Fudan University, Shanghai, 200040, People’s Republic of China
| | - Li Yang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015, People’s Republic of China
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015, People’s Republic of China
| | - Lei Yang
- Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen, Guangdong, 518055, People’s Republic of China
| | - Shuiming Li
- Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen, Guangdong, 518055, People’s Republic of China
| | - Ling Ye
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
- Department of Allergy, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
| | - Jinfeng Ye
- Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen, Guangdong, 518055, People’s Republic of China
| | - Chengshui Chen
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015, People’s Republic of China
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015, People’s Republic of China
- Department of Pulmonary and Critical Care Medicine, the Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People’s Hospital, Zhejiang, 324000, People’s Republic of China
| | - Yiming Zeng
- Department of Pulmonary and Critical Care Medicine, the Second Affiliated Hospital of Fujian Medical University, Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian, 362000, People’s Republic of China
| | - Mengchan Zhu
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
| | - Xiaoping Lin
- Department of Pulmonary and Critical Care Medicine, the Second Affiliated Hospital of Fujian Medical University, Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian, 362000, People’s Republic of China
| | - Qing Peng
- Department of Pulmonary and Critical Care Medicine, Minhang Hospital, Fudan University, Shanghai, 201199, People’s Republic of China
| | - Yun Wang
- Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen, Guangdong, 518055, People’s Republic of China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, Guangdong, 515041, People’s Republic of China
| | - Meiling Jin
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
- Department of Allergy, Zhongshan Hospital, Fudan University, Shanghai, 200032, People’s Republic of China
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Wang G, Chen A, Wu Y, Wang D, Chang C, Yu G. Fat storage-inducing transmembrane proteins: beyond mediating lipid droplet formation. Cell Mol Biol Lett 2022; 27:98. [DOI: 10.1186/s11658-022-00391-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/23/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractFat storage-inducing transmembrane proteins (FITMs) were initially identified in 2007 as members of a conserved endoplasmic reticulum (ER) resident transmembrane protein gene family, and were found to be involved in lipid droplet (LD) formation. Recently, several studies have further demonstrated that the ability of FITMs to directly bind to triglyceride and diacylglycerol, and the diphosphatase activity of hydrolyzing fatty acyl-CoA, might enable FITMs to maintain the formation of lipid droplets, engage in lipid metabolism, and protect against cellular stress. Based on the distribution of FITMs in tissues and their important roles in lipid droplet biology and lipid metabolism, it was discovered that FITMs were closely related to muscle development, adipocyte differentiation, and energy metabolism. Accordingly, the abnormal expression of FITMs was not only associated with type 2 diabetes and lipodystrophy, but also with cardiac disease and several types of cancer. This study reviews the structure, distribution, expression regulation, and functionality of FITMs and their potential relationships with various metabolic diseases, hoping to provide inspiration for fruitful research directions and applications of FITM proteins. Moreover, this review will provide an important theoretical basis for the application of FITMs in the diagnosis and treatment of related diseases.
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Nishihama N, Nagayama T, Makino S, Koishi R. Mice lacking fat storage-inducing transmembrane protein 2 show improved profiles upon pressure overload-induced heart failure. Heliyon 2019; 5:e01292. [PMID: 30923760 PMCID: PMC6423704 DOI: 10.1016/j.heliyon.2019.e01292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/18/2018] [Accepted: 02/26/2019] [Indexed: 11/03/2022] Open
Abstract
Fat storage-inducing transmembrane proteins 1 and 2 (FITM1 and FITM2, respectively) are transmembrane endoplasmic/sarcoplasmic reticulum proteins involved in lipid droplet formation. The physiological functions of FITM1 have only been reported in skeletal muscle, while those of FITM2 were analyzed using genetically engineered mice. However, their roles in the heart have not been characterized. To examine their cardiac functions, we analyzed Fitm1- or Fitm2-knockout mice. Neither constitutive Fitm1 (−/−) aged nor heart failure model mice showed significant differences in heart size or function. Fitm2 (−/−) mice exhibited embryonic death, and aged Fitm2 (+/−) mice had shortened left ventricular end-diastolic dimension, and shortened left ventricular end-systolic dimension. However, body weight and ejection fraction of Fitm2 (+/−) mice were similar to those of wild-type littermates. In the chronic heart failure models, Fitm2 (+/−) mice showed significant suppression of increased left ventricular end-diastolic dimension and reduced ejection fraction. These results suggest the involvement of Fitm2 in chronic heart failure, whereas Fitm1 have a minor effect in this context in mice.
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Chen W, Xu H, Chen X, Liu Z, Zhang W, Xia D. Functional and Activity Analysis of Cattle UCP3 Promoter with MRFs-Related Factors. Int J Mol Sci 2016; 17:ijms17050682. [PMID: 27164086 PMCID: PMC4881508 DOI: 10.3390/ijms17050682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 04/09/2016] [Accepted: 04/13/2016] [Indexed: 12/18/2022] Open
Abstract
Uncoupling protein 3 (UCP3) is mainly expressed in muscle. It plays an important role in muscle, but less research on the regulation of cattle UCP3 has been performed. In order to elucidate whether cattle UCP3 can be regulated by muscle-related factors, deletion of cattle UCP3 promoter was amplified and cloned into pGL3-basic, pGL3-promoter and PEGFP-N3 vector, respectively, then transfected into C2C12 myoblasts cells and UCP3 promoter activity was measured using the dual-Luciferase reporter assay system. The results showed that there is some negative-regulatory element from −620 to −433 bp, and there is some positive-regulatory element between −433 and −385 bp. The fragment (1.08 kb) of UCP3 promoter was cotransfected with muscle-related transcription factor myogenic regulatory factors (MRFs) and myocyte-specific enhancer factor 2A (MEF2A). We found that UCP3 promoter could be upregulated by Myf5, Myf6 and MyoD and downregulated by MyoG and MEF2A.
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Affiliation(s)
- Wei Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Guizhou University, Guiyang 550025, China.
- College of Animal Science, Guizhou University, Guiyang 550025, China.
- College of Life Science, Guizhou University, Guiyang 550025, China.
| | - Houqiang Xu
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Guizhou University, Guiyang 550025, China.
- College of Animal Science, Guizhou University, Guiyang 550025, China.
| | - Xiang Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Guizhou University, Guiyang 550025, China.
- College of Animal Science, Guizhou University, Guiyang 550025, China.
| | - Zhongwei Liu
- College of Life Science, Guizhou University, Guiyang 550025, China.
| | - Wen Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Guizhou University, Guiyang 550025, China.
| | - Dan Xia
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Guizhou University, Guiyang 550025, China.
- College of Animal Science, Guizhou University, Guiyang 550025, China.
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Choudhary V, Golden A, Prinz WA. Keeping FIT, storing fat: Lipid droplet biogenesis. WORM 2016; 5:e1170276. [PMID: 27383728 DOI: 10.1080/21624054.2016.1170276] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/10/2016] [Accepted: 03/15/2016] [Indexed: 10/22/2022]
Abstract
All eukaryotes store excess lipids in organelles known as lipid droplets (LDs), which play central roles in lipid metabolism. Understanding LD biogenesis and metabolism is critical for understanding the pathophysiology of lipid metabolic disorders like obesity and atherosclerosis. LDs are composed of a core of neutral lipids surrounded by a monolayer of phospholipids that often contains coat proteins. Nascent LDs bud from the endoplasmic reticulum (ER) but the mechanism is not known. In this commentary we discuss our recent finding that a conserved family of proteins called fat storage-inducing transmembrane (FIT) proteins is necessary for LDs budding from the ER. In cells lacking FIT proteins, LDs remain in the ER membrane. C. elegans has a single FIT protein (FITM-2), which we found is essential; almost all homozygous fitm-2 animals die as larvae and those that survive to adulthood give rise to embryos that die as L1 and L2 larvae. Homozygous fitm-2 animals have a number of abnormalities including a significant decrease in intestinal LDs and dramatic defects in muscle development. Understanding how FIT proteins mediate LD biogenesis and what roles they play in lipid metabolism and development are fascinating challenges for the future.
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Affiliation(s)
- Vineet Choudhary
- Laboratory of Cell and Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , Bethesda, MD, USA
| | - Andy Golden
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , Bethesda, MD, USA
| | - William A Prinz
- Laboratory of Cell and Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , Bethesda, MD, USA
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Deng B, Zhang F, Chen K, Wen J, Huang H, Liu W, Ye S, Wang L, Yang Y, Gong P, Jiang S. MyoD promotes porcine PPARγ gene expression through an E-box and a MyoD-binding site in the PPARγ promoter region. Cell Tissue Res 2016; 365:381-91. [PMID: 26944559 DOI: 10.1007/s00441-016-2380-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 02/18/2016] [Indexed: 01/08/2023]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is a key transcription factor in adipogenesis and can be regulated by adipogenesis-related factors. However, little information is available regarding its regulation by myogenic factors. In this study, we found that over-expression of MyoD enhanced porcine adipocyte differentiation and up-regulated PPARγ expression, whereas small interfering RNA against MyoD significantly attenuated porcine adipocyte differentiation and inhibited PPARγ expression. The MyoD-binding sites in the PPARγ promoter region at -412 to -396 and -155 to -150 were identified by promoter deletion analysis and site-directed mutagenesis. Electrophoretic mobility shift assays and chromatin immunoprecipitation further showed that these two regions are MyoD-binding sites, both in vitro and in vivo, indicating that MyoD directly interacts with the porcine PPARγ promoter. Thus, our results demonstrate that an Enhancer box and a binding site for a cooperative co-activator of MyoD are present in the promoter region of porcine PPARγ; furthermore, MyoD up-regulates PPARγ expression and promotes porcine adipocyte differentiation.
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Affiliation(s)
- Bing Deng
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Feng Zhang
- Key Laboratory of Swine Genetics and Breeding of the Agricultural Ministry and Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Peoples Republic of China
| | - Kun Chen
- Key Laboratory of Swine Genetics and Breeding of the Agricultural Ministry and Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Peoples Republic of China
| | - Jianghui Wen
- Wuhan University of Technology, Wuhan, 430074, Peoples Republic of China
| | - Haijun Huang
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Wu Liu
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Shengqiang Ye
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Lixia Wang
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Yu Yang
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Ping Gong
- Wuhan Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, Hubei, 430208, Peoples Republic of China
| | - Siwen Jiang
- Key Laboratory of Swine Genetics and Breeding of the Agricultural Ministry and Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Peoples Republic of China. .,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, Peoples Republic of China.
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