title: SFRP5 acts as a mature adipocyte marker but not as a regulator in adipogenesis.
abstract: WNT/β-catenin signalling is involved in regulating adipogenesis, and its dysregulation occurs in obesity. Secreted frizzled-related protein 5 (SFRP5) is a WNT protein inhibitor; however, its role in adipogenesis and obesity is controversial. In this study, we observed that SFRP5 mRNA levels were increased in the fat tissues of obese humans and mice. Sfrp5 expression was gradually induced during differentiation of white and brown adipocytes and was highly increased in mature adipocytes rather than preadipocytes. However, the effects of the exogenous overexpression of Sfrp5 indicated that Sfrp5 may not directly regulate adipogenesis in vitro under the conditions studied. Moreover, SFRP5 did not inhibit the canonical WNT/β-catenin signalling pathway in preadipocytes. Subsequently, we measured the levels of circulating SFRP5 in obese patients and non-obese subjects using ELISA and did not find any significant difference. Collectively, these findings indicate that Sfrp5 represents a candidate for a mature adipocyte marker gene. Our data provide new evidence concerning the role of SFRP5 in adipogenesis of white and brown adipocytes and obesity.
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Hong
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Ruixin
authors.initials: R
authors.lastname: Liu
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Maopei
authors.initials: M
authors.lastname: Chen
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Min
authors.initials: M
authors.lastname: Xu
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Wiqiong
authors.initials: W
authors.lastname: Gu
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Qinyun
authors.initials: Q
authors.lastname: Ma
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Shi
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China gning@sibs.ac.cn jiqiuwang@163.com.
authors.forename: Jiqiu
authors.initials: J
authors.lastname: Wang
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Weiqing
authors.initials: W
authors.lastname: Wang
authors.affiliation: Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China Shanghai Clinical Center for Endocrine and Metabolic DiseasesShanghai Institute of Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, Shanghai Key Laboratory for Endocrine Tumors and E-Institutes of Shanghai Universities, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, ChinaLaboratory for Endocrine and MetabolismInstitute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China gning@sibs.ac.cn jiqiuwang@163.com.
authors.forename: Guang
authors.initials: G
authors.lastname: Ning
mesh_terms: D041721:3T3-L1 Cells; D048868:Adaptor Proteins, Signal Transducing; D017667:Adipocytes / Q000378:metabolism*; D050156:Adipogenesis / Q000235:genetics; D000273:Adipose Tissue / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D016022:Case-Control Studies; D002478:Cells, Cultured; D005136:Eye Proteins / Q000502:physiology*; D005260:Female; D057809:HEK293 Cells; D006801:Humans; D008297:Male; D008565:Membrane Proteins / Q000502:physiology*; D051379:Mice; D008820:Mice, Obese; D008822:Mice, Transgenic; D009765:Obesity / Q000097:blood; D055815:Young Adult; D000094742:Secreted Frizzled-Related Proteins
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D015415:Biomarkers; D005136:Eye Proteins; D008565:Membrane Proteins; C118511:SFRP5 protein, human; D000094742:Secreted Frizzled-Related Proteins
keywords: WNT signalling pathway; adipocyte differentiation; adipogenesis; obesity; β-catenin