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Lankatillake C, Huynh T, Dias DA. Abrus precatorius Leaf Extract Stimulates Insulin-mediated Muscle Glucose Uptake: In vitro Studies and Phytochemical Analysis. PLANTA MEDICA 2024; 90:388-396. [PMID: 38490239 DOI: 10.1055/a-2281-0988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Diabetes mellitus, linked with insulin resistance and hyperglycaemia, is a leading cause of mortality. Glucose uptake through glucose transporter type 4, especially in skeletal muscle, is crucial for maintaining euglycaemia and is a key pathway targeted by antidiabetic medication. Abrus precatorius is a medicinal plant with demonstrated antihyperglycaemic activity in animal models, but its mechanisms are unclear.This study evaluated the effect of a 50% ethanolic (v/v) A. precatorius leaf extract on (1) insulin-stimulated glucose uptake and (2) related gene expression in differentiated C2C12 myotubes using rosiglitazone as a positive control, and (3) generated a comprehensive phytochemical profile of A. precatorius leaf extract using liquid chromatography-high resolution mass spectrometry to elucidate its antidiabetic compounds. A. precatorius leaf extract significantly increased insulin-stimulated glucose uptake, and insulin receptor substrate 1 and Akt substrate of 160 kDa gene expression; however, it had no effect on glucose transporter type 4 gene expression. At 250 µg/mL A. precatorius leaf extract, the increase in glucose uptake was significantly higher than 1 µM rosiglitazone. Fifty-five phytochemicals (primarily polyphenols, triterpenoids, saponins, and alkaloids) were putatively identified, including 24 that have not previously been reported from A. precatorius leaves. Abrusin, precatorin I, glycyrrhizin, hemiphloin, isohemiphloin, hispidulin 4'-O-β-D-glucopyranoside, homoplantaginin, and cirsimaritin were putatively identified as known major compounds previously reported from A. precatorius leaf extract. A. precatorius leaves contain antidiabetic phytochemicals and enhance insulin-stimulated glucose uptake in myotubes via the protein kinase B/phosphoinositide 3-kinase pathway by regulating insulin receptor substrate 1 and Akt substrate of 160 kDa gene expression. Therefore, A. precatorius leaves may improve skeletal muscle insulin sensitivity and hyperglycaemia. Additionally, it is a valuable source of bioactive phytochemicals with potential therapeutic use for diabetes.
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Affiliation(s)
- Chintha Lankatillake
- School of Health and Biomedical Sciences, Discipline of Laboratory Medicine, STEM College, RMIT University, Bundoora, Victoria 3083, Australia
| | - Tien Huynh
- School of Science, STEM College, RMIT University, Bundoora, Victoria 3083, Australia
| | - Daniel A Dias
- ARC Training Centre for Hyphenated Analytical Separation Technologies (HyTECH), CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia
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Chan WS, Ng CF, Pang BPS, Hang M, Tse MCL, Iu ECY, Ooi XC, Yang X, Kim JK, Lee CW, Chan CB. Exercise-induced BDNF promotes PPARδ-dependent reprogramming of lipid metabolism in skeletal muscle during exercise recovery. Sci Signal 2024; 17:eadh2783. [PMID: 38502732 PMCID: PMC11022078 DOI: 10.1126/scisignal.adh2783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 02/29/2024] [Indexed: 03/21/2024]
Abstract
Post-exercise recovery is essential to resolve metabolic perturbations and promote long-term cellular remodeling in response to exercise. Here, we report that muscle-generated brain-derived neurotrophic factor (BDNF) elicits post-exercise recovery and metabolic reprogramming in skeletal muscle. BDNF increased the post-exercise expression of the gene encoding PPARδ (peroxisome proliferator-activated receptor δ), a transcription factor that is a master regulator of lipid metabolism. After exercise, mice with muscle-specific Bdnf knockout (MBKO) exhibited impairments in PPARδ-regulated metabolic gene expression, decreased intramuscular lipid content, reduced β-oxidation, and dysregulated mitochondrial dynamics. Moreover, MBKO mice required a longer period to recover from a bout of exercise and did not show increases in exercise-induced endurance capacity. Feeding naïve mice with the bioavailable BDNF mimetic 7,8-dihydroxyflavone resulted in effects that mimicked exercise-induced adaptations, including improved exercise capacity. Together, our findings reveal that BDNF is an essential myokine for exercise-induced metabolic recovery and remodeling in skeletal muscle.
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Affiliation(s)
- Wing Suen Chan
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Chun Fai Ng
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Brian Pak Shing Pang
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Miaojia Hang
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Margaret Chui Ling Tse
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Elsie Chit Yu Iu
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Xin Ci Ooi
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
| | - Xiuying Yang
- Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica of Peking Union Medical College, Beijing 101399, China
| | - Jason K. Kim
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA
| | - Chi Wai Lee
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Chi Bun Chan
- School of Biological Sciences, the University of Hong Kong, 5N10 Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong, China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China
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Sawamoto A, Okada M, Matsuoka N, Okuyama S, Nakajima M. Tipepidine activates AMPK and improves adipose tissue fibrosis and glucose intolerance in high-fat diet-induced obese mice. FASEB J 2024; 38:e23542. [PMID: 38466234 DOI: 10.1096/fj.202301861rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/13/2024] [Accepted: 02/23/2024] [Indexed: 03/12/2024]
Abstract
Tipepidine (3-[di-2-thienylmethylene]-1-methylpiperidine) (TP) is a non-narcotic antitussive used in Japan. Recently, the potential application of TP in the treatment of neuropsychiatric disorders, such as depression and attention deficit hyperactivity disorder, has been suggested; however, its functions in energy metabolism are unknown. Here, we demonstrate that TP exhibits a metabolism-improving action. The administration of TP reduced high-fat diet-induced body weight gain in mice and lipid accumulation in the liver and increased the weight of epididymal white adipose tissue (eWAT) in diet-induced obese (DIO) mice. Furthermore, TP inhibited obesity-induced fibrosis in the eWAT. We also found that TP induced AMP-activated protein kinase (AMPK) activation in the eWAT of DIO mice and 3T3-L1 cells. TP-induced AMPK activation was abrogated by the transfection of liver kinase B1 siRNA in 3T3-L1 cells. The metabolic effects of TP were almost equivalent to those of metformin, an AMPK activator that is used as a first-line antidiabetic drug. In summary, TP is a potent AMPK activator, suggesting its novel role as an antidiabetic drug owing to its antifibrotic effect on adipose tissues.
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Affiliation(s)
- Atsushi Sawamoto
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan
| | - Madoka Okada
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan
| | - Nanako Matsuoka
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan
| | - Satoshi Okuyama
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan
| | - Mitsunari Nakajima
- Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan
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Lynch CE, Brandt AR, Vincenty CS, Robbins E, Skiles C, Minchev K, Chambers TL, Belangee A, Trappe TA, Trappe SW. Adipose biopsy techniques for studies in human exercise physiology. Am J Physiol Regul Integr Comp Physiol 2024; 326:R220-R229. [PMID: 38223939 DOI: 10.1152/ajpregu.00266.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
Adipose biopsy techniques are relatively undefined for exercise physiology research in individuals at or near normal weight. The purpose of this study was to compare the influence of two adipose biopsy techniques on tissue quality through measurements of adipocyte cell size, as well as mRNA and protein levels of select pro- and anti-inflammatory cytokines and adipokines. Thirteen participants (9 M, 4 W; 28 ± 4 yr; 27 ± 3 kg·m-2; V̇o2max: 3.3 ± 0.7 L·min-1) underwent subcutaneous adipose biopsies on either side of the umbilicus (incision: ∼8 cm lateral, sampling area: ∼5 cm lateral) using 1) a 6-mm Bergström biopsy needle and 2) a mini-liposuction approach with a 4-mm Mercedes biopsy needle that used prebiopsy tumescent delivery (∼30 mL 0.9% NaCl solution) into the sampling area (i.e., 'wet' technique). Tissue obtained was processed identically for analysis and both techniques returned high-quality tissue for histology (similar % intact adipocytes), mRNA (RNA integrity numbers >7.0), and protein. Adipocyte size was similar (P > 0.05) between both techniques (Bergström: 6,116 ± 1,652 μm2, 554-23,522 µm2; Mercedes: 6,517 ± 952 μm2, 926-21,969 µm2). There were also no differences (P > 0.05) between the two techniques for the measured cytokines (pro- and anti-inflammatory) and adipokines at the mRNA and protein levels. Adipocyte size was positively correlated with body mass index and body fat percentage, and negatively correlated with V̇o2max (P < 0.05). These results suggest both adipose biopsy techniques used in the current investigation are appropriate for histological, transcriptional, and translational level measurements in exercise physiology studies of nonobese women and men.NEW & NOTEWORTHY This study provides investigators with useful information related to adipose biopsy sampling approaches that can be used when planning studies that use measurements of adipose histology, as well as measurements at the mRNA and protein level. Adipose periumbilical sampling with the Bergström biopsy needle and the Mercedes wet mini-liposuction technique are both appropriate options for studies in exercise physiology and in nonobese individuals.
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Affiliation(s)
- Colleen E Lynch
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Anna R Brandt
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Caroline S Vincenty
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Ethan Robbins
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Chad Skiles
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Kiril Minchev
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Toby L Chambers
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Alicia Belangee
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Todd A Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Scott W Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
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Chen SM, Huang TY, Lee WJ, Chuang LM, Chang TJ. Positive correlation of ANGPTL8 expression in human visceral adipose tissue with body mass index. J Formos Med Assoc 2024:S0929-6646(23)00498-9. [PMID: 38191275 DOI: 10.1016/j.jfma.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Angiopoietin-like protein 8 (ANGPTL8) is an important regulator of lipid metabolism. We aimed to investigate the difference of ANGPTL8 expression in different depots of adipose tissues between individuals with and without obesity, and its correlation with various metabolic parameters. METHODS Subcutaneous (SAT) and visceral adipose tissue (VAT) samples were collected from patients who underwent bariatric or intra-abdominal surgery. Expression levels of ANGPTL8, monoglyceride lipase (MGL), monocyte chemoattractant protein-1 (MCP-1), leptin and adiponectin (APM1) were determined using real-time quantitative polymerase chain reaction. The correlation of ANGPTL8 expression with various metabolic parameters and other gene expression levels was analyzed using Person's correlation analysis. Logistic regression was used to establish a prediction model of obesity. RESULTS Totally 330 subjects (obese: 281, non-obese: 49) were recruited. ANGPTL8 expression in VAT was significantly higher in the obesity group than in the non-obesity group (P = 0.0096). ANGPTL8 expression in VAT was positively correlated with body mass index (BMI) (r = 0.1169, P < 0.05) and was independently associated with obesity (O.R., 1.246; 95 % C.I. 1.013-21.533, P = 0.038). We also found the gene expression of ANGPTL8 in SAT and VAT was negatively correlated with APM1 expression in respective SAT and VAT. CONCLUSIONS ANGPTL8 expression levels in VAT were higher in subjects with obesity, and positively correlated with BMI. This suggests a role of ANGPTL8 in the pathophysiology of obesity and may pave the way for novel treatment target of obesity.
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Affiliation(s)
- Shiau-Mei Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Tse-Ying Huang
- Department of Internal Medicine, National Taiwan University Hospital, Hsin-Chu Branch, Taiwan
| | - Wei-Jei Lee
- Department of Surgery, Taoyuan Min-Sheng General Hospital, Taoyuan, Taiwan
| | - Lee-Ming Chuang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; School of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Molecular Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Tien-Jyun Chang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; School of Medicine, National Taiwan University, Taipei, Taiwan.
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Hsu WH, LaBella KA, Lin Y, Xu P, Lee R, Hsieh CE, Yang L, Zhou A, Blecher JM, Wu CJ, Lin K, Shang X, Jiang S, Spring DJ, Xia Y, Chen P, Shen JP, Kopetz S, DePinho RA. Oncogenic KRAS Drives Lipofibrogenesis to Promote Angiogenesis and Colon Cancer Progression. Cancer Discov 2023; 13:2652-2673. [PMID: 37768068 PMCID: PMC10807546 DOI: 10.1158/2159-8290.cd-22-1467] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 08/01/2023] [Accepted: 09/26/2023] [Indexed: 09/29/2023]
Abstract
Oncogenic KRAS (KRAS*) contributes to many cancer hallmarks. In colorectal cancer, KRAS* suppresses antitumor immunity to promote tumor invasion and metastasis. Here, we uncovered that KRAS* transforms the phenotype of carcinoma-associated fibroblasts (CAF) into lipid-laden CAFs, promoting angiogenesis and tumor progression. Mechanistically, KRAS* activates the transcription factor CP2 (TFCP2) that upregulates the expression of the proadipogenic factors BMP4 and WNT5B, triggering the transformation of CAFs into lipid-rich CAFs. These lipid-rich CAFs, in turn, produce VEGFA to spur angiogenesis. In KRAS*-driven colorectal cancer mouse models, genetic or pharmacologic neutralization of TFCP2 reduced lipid-rich CAFs, lessened tumor angiogenesis, and improved overall survival. Correspondingly, in human colorectal cancer, lipid-rich CAF and TFCP2 signatures correlate with worse prognosis. This work unveils a new role for KRAS* in transforming CAFs, driving tumor angiogenesis and disease progression, providing an actionable therapeutic intervention for KRAS*-driven colorectal cancer. SIGNIFICANCE This study identified a molecular mechanism contributing to KRAS*-driven colorectal cancer progression via fibroblast transformation in the tumor microenvironment to produce VEGFA driving tumor angiogenesis. In preclinical models, targeting the KRAS*-TFCP2-VEGFA axis impaired tumor progression, revealing a potential novel therapeutic option for patients with KRAS*-driven colorectal cancer. This article is featured in Selected Articles from This Issue, p. 2489.
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Affiliation(s)
- Wen-Hao Hsu
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kyle A. LaBella
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yiyun Lin
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ping Xu
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rumi Lee
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Cheng-En Hsieh
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lei Yang
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ashley Zhou
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jonathan M. Blecher
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Chang-Jiun Wu
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kangyu Lin
- Department of Gastrointestinal Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiaoying Shang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shan Jiang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Denise J. Spring
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yan Xia
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Peiwen Chen
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - John Paul Shen
- Department of Gastrointestinal Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ronald A. DePinho
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Pérez-Gómez JM, Porcel-Pastrana F, De La Luz-Borrero M, Montero-Hidalgo AJ, Gómez-Gómez E, Herrera-Martínez AD, Guzmán-Ruiz R, Malagón MM, Gahete MD, Luque RM. LRP10, PGK1 and RPLP0: Best Reference Genes in Periprostatic Adipose Tissue under Obesity and Prostate Cancer Conditions. Int J Mol Sci 2023; 24:15140. [PMID: 37894825 PMCID: PMC10606769 DOI: 10.3390/ijms242015140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/02/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Obesity (OB) is a metabolic disorder characterized by adipose tissue dysfunction that has emerged as a health problem of epidemic proportions in recent decades. OB is associated with multiple comorbidities, including some types of cancers. Specifically, prostate cancer (PCa) has been postulated as one of the tumors that could have a causal relationship with OB. Particularly, a specialized adipose tissue (AT) depot known as periprostatic adipose tissue (PPAT) has gained increasing attention over the last few years as it could be a key player in the pathophysiological interaction between PCa and OB. However, to date, no studies have defined the most appropriate internal reference genes (IRGs) to be used in gene expression studies in this AT depot. In this work, two independent cohorts of PPAT samples (n = 20/n = 48) were used to assess the validity of a battery of 15 literature-selected IRGs using two widely used techniques (reverse transcription quantitative PCR [RT-qPCR] and microfluidic-based qPCR array). For this purpose, ΔCt method, GeNorm (v3.5), BestKeeper (v1.0), NormFinder (v.20.0), and RefFinder software were employed to assess the overall trends of our analyses. LRP10, PGK1, and RPLP0 were identified as the best IRGs to be used for gene expression studies in human PPATs, specifically when considering PCa and OB conditions.
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Grants
- PID2022-1381850B-I00 Spanish Ministry of Science, Innovation, and Universities
- PID2019-105564RB-I00 Spanish Ministry of Science, Innovation, and Universities
- FPU18-06009 Spanish Ministry of Science, Innovation, and Universities
- PRE2020-094225 Spanish Ministry of Science, Innovation, and Universities
- FPU18-02485 Spanish Ministry of Science, Innovation, and Universities
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Affiliation(s)
- Jesús M. Pérez-Gómez
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Francisco Porcel-Pastrana
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Marina De La Luz-Borrero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Antonio J. Montero-Hidalgo
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Enrique Gómez-Gómez
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- Urology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain
| | - Aura D. Herrera-Martínez
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, 14004 Cordoba, Spain
| | - Rocío Guzmán-Ruiz
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - María M. Malagón
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Manuel D. Gahete
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
| | - Raúl M. Luque
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004 Cordoba, Spain; (J.M.P.-G.); (F.P.-P.); (M.D.L.L.-B.); (A.J.M.-H.); (E.G.-G.); (A.D.H.-M.); (R.G.-R.); (M.M.M.); (M.D.G.)
- Department of Cell Biology, Physiology, and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Reina Sofia University Hospital (HURS), 14004 Cordoba, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), 14004 Cordoba, Spain
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Chambers TL, Stroh AM, Chavez C, Brandt AR, Claiborne A, Fountain WA, Gries KJ, Jones AM, Kuszmaul DJ, Lee GA, Lester BE, Lynch CE, Minchev K, Montenegro CF, Naruse M, Raue U, Trappe TA, Trappe S. Multitissue responses to exercise: a MoTrPAC feasibility study. J Appl Physiol (1985) 2023; 135:302-315. [PMID: 37318985 PMCID: PMC10393343 DOI: 10.1152/japplphysiol.00210.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 06/17/2023] Open
Abstract
We assessed the feasibility of the Molecular Transducers of Physical Activity Consortium (MoTrPAC) human adult clinical exercise protocols, while also documenting select cardiovascular, metabolic, and molecular responses to these protocols. After phenotyping and familiarization sessions, 20 subjects (25 ± 2 yr, 12 M, 8 W) completed an endurance exercise bout (n = 8, 40 min cycling at 70% V̇o2max), a resistance exercise bout (n = 6, ∼45 min, 3 sets of ∼10 repetition maximum, 8 exercises), or a resting control period (n = 6, 40 min rest). Blood samples were taken before, during, and after (10 min, 2 h, and 3.5 h) exercise or rest for levels of catecholamines, cortisol, glucagon, insulin, glucose, free fatty acids, and lactate. Heart rate was recorded throughout exercise (or rest). Skeletal muscle (vastus lateralis) and adipose (periumbilical) biopsies were taken before and ∼4 h following exercise or rest for mRNA levels of genes related to energy metabolism, growth, angiogenesis, and circadian processes. Coordination of the timing of procedural components (e.g., local anesthetic delivery, biopsy incisions, tumescent delivery, intravenous line flushes, sample collection and processing, exercise transitions, and team dynamics) was reasonable to orchestrate while considering subject burden and scientific objectives. The cardiovascular and metabolic alterations reflected a dynamic and unique response to endurance and resistance exercise, whereas skeletal muscle was transcriptionally more responsive than adipose 4 h postexercise. In summary, the current report provides the first evidence of protocol execution and feasibility of key components of the MoTrPAC human adult clinical exercise protocols. Scientists should consider designing exercise studies in various populations to interface with the MoTrPAC protocols and DataHub.NEW & NOTEWORTHY This study highlights the feasibility of key aspects of the MoTrPAC adult human clinical protocols. This initial preview of what can be expected from acute exercise trial data from MoTrPAC provides an impetus for scientists to design exercise studies to interlace with the rich phenotypic and -omics data that will populate the MoTrPAC DataHub at the completion of the parent protocol.
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Affiliation(s)
- Toby L Chambers
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Andrew M Stroh
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Clarisa Chavez
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Anna R Brandt
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Alex Claiborne
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - William A Fountain
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Kevin J Gries
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Andrew M Jones
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Dillon J Kuszmaul
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Gary A Lee
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Bridget E Lester
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Colleen E Lynch
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Kiril Minchev
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | | | - Masatoshi Naruse
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Ulrika Raue
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Todd A Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
| | - Scott Trappe
- Human Performance Laboratory, Ball State University, Muncie, Indiana, United States
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9
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Altered sialin mRNA gene expression in type 2 diabetic male Wistar rats: implications for nitric oxide deficiency. Sci Rep 2023; 13:4013. [PMID: 36899088 PMCID: PMC10006425 DOI: 10.1038/s41598-023-31240-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Nitrate therapy has been suggested to boost nitric oxide (NO) levels in type 2 diabetes (T2D); however, little is known about nitrate transport across the membranes. This study aimed to assess changes in the mRNA expression of sialin, as a nitrate transporter, in the main tissues of rats with T2D. Rats were divided into two groups (n = 6/group): Control and T2D. A high-fat diet combined with a low dose of streptozotocin (STZ, 30 mg/kg) was used to induce T2D. At month 6, samples from the main tissues of rats were used to measure the mRNA expression of sialin and levels of NO metabolites. Rats with T2D had lower nitrate levels in the soleus muscle (66%), lung (48%), kidney (43%), aorta (30%), adrenal gland (58%), epididymal adipose tissue (eAT) (61%), and heart (37%) and had lower nitrite levels in the pancreas (47%), kidney (42%), aorta (33%), liver (28%), eAT (34%), and heart (32%). The order of sialin gene expression in control rats was: soleus muscle > kidney > pancreas > lung > liver > adrenal gland > brain > eAT > intestine > stomach > aorta > heart. Compared to controls, rats with T2D had higher sialin mRNA expressions in the stomach (2.1), eAT (2.0), adrenal gland (1.7), liver (8.9), and soleus muscle (3.4), and lower sialin expression in the intestine (0.56), pancreas (0.42), and kidney (0.44), all P values < 0.05. These findings indicate altered sialin mRNA expression in the main tissues of male T2D rats and may have implications for future NO-based treatment of T2D.
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Rojo‐García AV, Vanmunster M, Pacolet A, Suhr F. Physical inactivity by tail suspension alters markers of metabolism, structure, and autophagy of the mouse heart. Physiol Rep 2023; 11:e15574. [PMID: 36695670 PMCID: PMC9875748 DOI: 10.14814/phy2.15574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023] Open
Abstract
Sedentary behavior has become ingrained in our society and has been linked to cardiovascular diseases. Physical inactivity is the main characteristic of sedentary behavior. However, its impact on cardiovascular disease is not clear. Therefore, we investigated the effect of physical inactivity in an established mouse model on gene clusters associated with cardiac fibrosis, electrophysiology, cell regeneration, and tissue degradation/turnover. We investigated a sedentary group (CTR, n = 10) versus a tail suspension group (TS, n = 11) that caused hindlimb unloading and consequently physical inactivity. Through histological, protein content, and transcript analysis approaches, we found that cardiac fibrosis-related genes partly change, with significant TS-associated increases in Tgfb1, but without changes in Col1a1 and Fn1. These changes are not translated into fibrosis at tissue level. We further detected TS-mediated increases in protein degradation- (Trim63, p < 0.001; Fbxo32, p = 0.0947 as well as in biosynthesis-related [P70s6kb1, p < 0.01]). Corroborating these results, we found increased expression of autophagy markers such as Atg7 (p < 0.01) and ULK1 (p < 0.05). Two cardiomyocyte regeneration- and sarcomerogenesis-related genes, Yap (p = 0.0535) and Srf (p < 0.001), increased upon TS compared to CTR conditions. Finally, we found significant upregulation of Gja1 (p < 0.05) and a significant downregulation of Aqp1 (p < 0.05). Our data demonstrate that merely 2 weeks of reduced physical activity induce changes in genes associated with cardiac structure and electrophysiology. Hence, these data should find the basis for novel research directed to evaluate the interplay of cardiac functioning and physical inactivity.
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Affiliation(s)
| | - Mathias Vanmunster
- Department of Movement SciencesExercise Physiology Research Group, KU LeuvenLeuvenBelgium
| | - Alexander Pacolet
- Department of Movement SciencesExercise Physiology Research Group, KU LeuvenLeuvenBelgium
| | - Frank Suhr
- Department of Movement SciencesExercise Physiology Research Group, KU LeuvenLeuvenBelgium
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11
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Ghafari F, Alizadeh AM, Agah S, Irani S, Mokhtare M. Insulin-like growth factor 1 serum levels in different stages of gastric cancer and their association with Helicobacter pylori status. Peptides 2022; 158:170892. [PMID: 36240982 DOI: 10.1016/j.peptides.2022.170892] [Citation(s) in RCA: 2] [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: 05/21/2022] [Revised: 10/08/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022]
Abstract
High serum insulin-like growth factor 1 (IGF-1) and positive Helicobacter pylori (H. pylori) may increase the risk of gastric cancer (GC). We aimed to investigate IGF-1 serum levels in different stages of GC patients and their association with H. pylori status. A total of 90 participants, including 60 GC patients and 30 noncancerous (NC) individuals, were included in the present study. IGF-1 serum levels and candidate proteins were assessed using enzyme-linked immunosorbent and immunohistochemistry techniques. Likewise, Giemsa staining was applied to detect H. pylori infection. The candidate genes' expression, including IGF-1R, PI3KCA, AKT1, mTOR1, KRAS, BRAF, and ERK1, was also evaluated by a real-time PCR assay. The results of advanced GC stages indicated a significantly high IHC score for IGF-1R and phosphorylated AKT, mTOR, and ERK proteins compared to the early stages. Moreover, IGF-1 serum levels and the expression of candidate genes were considerably increased in the advanced GC patients compared to the early stages and the positive H. pylori status compared to the negative H. pylori status (P < 0.05). As a result, high IGF-1 serum levels and positive H. pylori status may be correlated with gastric tumor progression, and the inhibition of IGF-1 and the eradication of H. pylori infection might be new therapeutic targets in GC patients.
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Affiliation(s)
- Fatemeh Ghafari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ali Mohammad Alizadeh
- Cancer Research Center, Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Shahram Agah
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Shiva Irani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Marjan Mokhtare
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
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12
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Zhao L, Yang H, Li X, Zhou Y, Liu T, Zhao Y. Transcriptome-based selection and validation of optimal reference genes in perirenal adipose developing of goat ( Capra hircus). Front Vet Sci 2022; 9:1055866. [PMID: 36467654 PMCID: PMC9712442 DOI: 10.3389/fvets.2022.1055866] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/02/2022] [Indexed: 06/15/2024] Open
Abstract
Brown adipose tissue (BAT) is mainly present in young mammals and is important for maintaining body temperature in neonatal mammals because of its ability to produce non-shivering thermogenesis. There is usually a large amount of BAT around the kidneys of newborn kids, but the BAT gradually "whiting" after birth. Screening and validating appropriate reference genes is a prerequisite for further studying the mechanism of goat brown adipose tissue "whiting" during the early stages. In this study, the expression stability of 17 candidate reference genes: 12 COPS8, SAP18, IGF2R, PARL, SNRNP200, ACTG1, CLTA, GANAB, GABARAP, PCBP2, CTSB, and CD151) selected based on previous transcriptome data as new candidate reference genes, 3 (PFDN5, CTNNB1, and EIF3M) recommended in previous studies, and 2 traditional reference genes (ACTB and GAPDH) was evaluated. Real-time quantitative PCR (RT-qPCR) technology was used to detect the expression level of candidate reference genes during goat BAT "whiting". Four algorithms: Normfinder, geNorm, ΔCt method, and BestKeeper, and two comprehensive algorithms: ComprFinder and RefFinder, were used to analyze the stability of each candidate reference genes. GABARAP, CLTA, GAPDH, and ACTB were identified as the most stable reference genes, while CTNNB1, CTSB, and EIF3M were the least stable. Moreover, two randomly selected target genes IDH2 and RBP4, were effectively normalized using the selected most stable reference genes. These findings collectively suggest that GABARAP, CLTA, GAPDH, and ACTB are relatively stable reference genes that can potentially be used for the development of perirenal fat in goats.
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13
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Ma Y, Meng A, Dai Y, Yang H, Huang Y, Liu X, Xian L, Yuan X. Hypoglycemic activity of phenols from Pleioblastus amarus (Keng) shells and its main chemical constituents identificatied using UHPLC-Q-TOF-MS. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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14
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Critical Sites on Ostreolysin Are Responsible for Interaction with Cytoskeletal Proteins. Biomedicines 2022; 10:biomedicines10102442. [PMID: 36289704 PMCID: PMC9598724 DOI: 10.3390/biomedicines10102442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
We explored the structural features of recombinant ostreolysin A (rOlyA), a protein produced by Pleurotus ostreatus and responsible for binding to α/β-tubulin. We found that rOlyA cell internalization is essential for the induction of adipocyte-associated activity, which is mediated by the interaction of rOlyA and microtubule proteins. We created different point mutations at conserved tryptophan (W) sites in rOlyA and analyzed their biological activity in HIB-1B preadipocytes. We demonstrated that the protein’s cell-internalization ability and the differentiated phenotype induced, such as small lipid-droplet formation and gene expression of mitogenesis activity, were impaired in point-mutated proteins W96A and W28A, where W was converted to alanine (A). We also showed that an rOlyA homologue, OlyA6 complexed with mCherry, cannot bind to β-tubulin and does not induce mitochondrial biosynthesis-associated markers, suggesting that the OlyA6 region masked by mCherry is involved in β-tubulin binding. Protein–protein docking simulations were carried out to investigate the binding mode of rOlyA with β-tubulin. Taken together, we identified functional sites in rOlyA that are essential for its binding to β-tubulin and its adipocyte-associated biological activity.
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15
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Overview of Transcriptomic Research on Type 2 Diabetes: Challenges and Perspectives. Genes (Basel) 2022; 13:genes13071176. [PMID: 35885959 PMCID: PMC9319211 DOI: 10.3390/genes13071176] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 02/04/2023] Open
Abstract
Type 2 diabetes (T2D) is a common chronic disease whose etiology is known to have a strong genetic component. Standard genetic approaches, although allowing for the detection of a number of gene variants associated with the disease as well as differentially expressed genes, cannot fully explain the hereditary factor in T2D. The explosive growth in the genomic sequencing technologies over the last decades provided an exceptional impetus for transcriptomic studies and new approaches to gene expression measurement, such as RNA-sequencing (RNA-seq) and single-cell technologies. The transcriptomic analysis has the potential to find new biomarkers to identify risk groups for developing T2D and its microvascular and macrovascular complications, which will significantly affect the strategies for early diagnosis, treatment, and preventing the development of complications. In this article, we focused on transcriptomic studies conducted using expression arrays, RNA-seq, and single-cell sequencing to highlight recent findings related to T2D and challenges associated with transcriptome experiments.
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16
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Kartinah NT, Komara N, Noviati ND, Dewi S, Yolanda S, Radhina A, Heriyanto H, Sianipar IR. Potential of Hibiscus sabdariffa Linn. in managing FGF21 resistance in diet-induced-obesity rats via miR-34a regulation. Vet Med Sci 2022; 8:309-317. [PMID: 34687158 PMCID: PMC8788974 DOI: 10.1002/vms3.653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Obesity is a cause of FGF21 resistance, which affects the browning and thermogenesis process of the adipose tissue. Decreased receptor expression is influenced by miR-34a, whose expression is increased in obesity. While FGF21-based therapies have been widely investigated, the potential activity of Hibiscus sabdariffa Linn. extract (HSE) against FGF21 resistance is unknown. OBJECTIVE This study aims to determine the effects of HSE on the expression of miR-34a and FGF21 receptors in white adipose tissue. METHODS This experimental study used 24 male Sprague-Dawley rats and divided into four groups: Control (N); diet-induced-obesity rats (DIO); DIO rats with HSE 200 mg/kgBW/day and DIO rats with HSE 400 mg/kgBW/day. Rats were fed a high-fat diet for 17 weeks. HSE was administered daily for 5 weeks. The administration of HSE 400 mg/kgBW/day resulted in the equivalent expression of miR-34a to that of the control (p > 0.05). RESULTS FGFR1 receptor expression was also similar to controls (p > 0.05). Beta-klotho expression was significantly lower than that of control (p < 0.05) but equivalent to that of DIO rats (p < 0.05). CONCLUSIONS H. sabdariffa has the potential to reduce FGF21 resistance in DIO rats through the suppression of miR-34a expression and an increase in the number of FGFR1 and beta-klotho receptors in adipose tissue.
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Affiliation(s)
- Neng Tine Kartinah
- Department of Medical PhysiologyFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Nisa Komara
- Master Program in Biomedical SciencesFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Nuraini Diah Noviati
- Master Program in Biomedical SciencesFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Syarifah Dewi
- Department of Biochemistry and Molecular BiologyFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Sophie Yolanda
- Department of Medical PhysiologyFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Afifa Radhina
- Master Program in Biomedical SciencesFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
| | - Heriyanto Heriyanto
- Master Program in Biomedical SciencesFaculty of Medicine, Universitas IndonesiaJakartaIndonesia
- Department of Medical PhysiologyFaculty of Medicine, UKRIDAJakartaIndonesia
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17
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Rashid M, Shah SG, Natu A, Verma T, Rauniyar S, Gera PB, Gupta S. RPS13, a potential universal reference gene for normalisation of gene expression in multiple human normal and cancer tissue samples. Mol Biol Rep 2021; 48:7967-7974. [PMID: 34657252 DOI: 10.1007/s11033-021-06828-6] [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: 03/10/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Reference genes are considered stable genes and are used for normalizing the gene expression profile across different cell types; as well as, in normal and diseased samples. However, these gene associates with different biological processes, and hence expression vary in different pathological conditions. Therefore, in the present study, eight different reference genes were used and compared to identify common reference gene usable for an array of different cell types and human cancers. METHODS AND RESULTS The expression stability of the eight reference genes across eleven normal and cancerous tissues was confirmed through real time-qPCR. Ribosomal protein S13 (RPS13) was found to be a common and stable reference gene across intra- and inter-comparison between various normal and tumor tissue types. Further, TCGA data analysis across and between normal and tumor tissue types also showed minimum deviation in expression of RPS13 gene out of eight routinely used reference genes. CONCLUSION RPS13 is the common stable reference gene in normalization for gene expression based analysis in cancer research.
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Affiliation(s)
- Mudasir Rashid
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Sanket Girish Shah
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Abhiram Natu
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Tripti Verma
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Sukanya Rauniyar
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India
| | - Poonam B Gera
- Biorepository, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India
| | - Sanjay Gupta
- Epigenetics and Chromatin Biology Group, Gupta Lab, Cancer Research Institute, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, MH, 410210, India.
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, MH, India.
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Identification of Novel Endogenous Controls for qPCR Normalization in SK-BR-3 Breast Cancer Cell Line. Genes (Basel) 2021; 12:genes12101631. [PMID: 34681026 PMCID: PMC8535678 DOI: 10.3390/genes12101631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 11/24/2022] Open
Abstract
Normalization of gene expression using internal controls or reference genes (RGs) has been the method of choice for standardizing the technical variations in reverse transcription quantitative polymerase chain reactions (RT-qPCR). Conventionally, ACTB and GAPDH have been used as reference genes despite evidence from literature discouraging their use. Hence, in the present study we identified and investigated novel reference genes in SK-BR-3, an HER2-enriched breast cancer cell line. Transcriptomic data of 82 HER2-E breast cancer samples from TCGA database were analyzed to identify twelve novel genes with stable expression. Additionally, thirteen RGs from the literature were analyzed. The expression variations of the candidate genes were studied over five successive passages (p) in two parallel cultures S1 and S2 and in acute and chronic hypoxia using various algorithms. Finally, the most stable RGs were selected and validated for normalization of the expression of three genes of interest (GOIs) in normoxia and hypoxia. Our results indicate that HSP90AB1, DAD1, PFN1 and PUM1 can be used in any combination of three (triplets) for optimizing intra- and inter-assay gene expression differences in the SK-BR-3 cell line. Additionally, we discourage the use of conventional RGs (ACTB, GAPDH, RPL13A, RNA18S and RNA28S) as internal controls for RT-qPCR in SK-BR-3 cell line.
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Liu F, He J, Liu B, Zhang P, Wang H, Sun X, Chu X, Guan W, Feng W, Bi Y, Zhu D. Association of Omental Adipocyte Hypertrophy and Fibrosis with Human Obesity and Type 2 Diabetes. Obesity (Silver Spring) 2021; 29:976-984. [PMID: 33943025 DOI: 10.1002/oby.23155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 02/04/2021] [Accepted: 02/07/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Morphological alterations including adipocyte hypertrophy and fibrosis deposition are important surrogate markers of visceral adipose tissue function, but the relationships between these morphological changes and type 2 diabetes mellitus (T2DM) and impaired insulin sensitivity are poorly defined. METHODS Omental adipose tissue was obtained from 66 individuals with obesity but without T2DM (OB group), 93 individuals with both obesity and T2DM (T2DM group), and 15 individuals with normal BMI and normal glucose tolerance (NGT group). Adipocyte diameter and volume were measured through pathological section analysis. Pericellular and perilobular fibrosis was determined through picrosirius red staining and immunochemistry, while fibrosis-related genes were tested through gene expression and hydroxyproline content. RESULTS Compared with the NGT and OB groups, individuals from the T2DM group displayed increased adipocyte diameter and volume levels. Increased adipocyte size (diameter and volume) was positively associated with hyperglycemia and insulin resistance and inversely correlated with insulin sensitivity (using the Matsuda whole-body insulin sensitivity index assessment of insulin sensitivity) and β-cell function (disposition index 30 and disposition index 120). The fibrosis levels of the OB group were the highest out of the three groups, whereas the fibrosis levels of T2DM individuals were lower than the OB group but higher than the NGT group. Although fibrosis was negatively correlated with T2DM, fibrosis deposition was not remarkably associated with impaired systemic insulin sensitivity and glucose metabolism. CONCLUSIONS Compared with fibrosis deposition, adipocyte hypertrophy is more closely associated with T2DM and impaired systemic insulin sensitivity.
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Affiliation(s)
- Fangcen Liu
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
- Department of Pathology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Jielei He
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Boxun Liu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pengzi Zhang
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Hongdong Wang
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xitai Sun
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xuehui Chu
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Wenxian Guan
- Department of General Surgery, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Wenhuan Feng
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Yan Bi
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Dalong Zhu
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu, China
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Zucherato VS, Penariol LBC, Silva LECM, Padovan CC, Poli-Neto OB, Rosa-E-Silva JC, Ferriani RA, Meola J. Identification of suitable reference genes for mesenchymal stem cells from menstrual blood of women with endometriosis. Sci Rep 2021; 11:5422. [PMID: 33686153 PMCID: PMC7970877 DOI: 10.1038/s41598-021-84884-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 02/22/2021] [Indexed: 02/06/2023] Open
Abstract
It has been suggested that menstrual blood-derived mesenchymal stem/stromal cells (MenMSCs) are associated with the etiopathogenesis of endometriosis and considerable effort has been invested in searching for target genes and deciphering associated molecular pathways. However, reference gene stability for proper reproducible normalization in the analyses of the expression data validation is still unexplored in this experimental context. Therefore, in this exploratory study, we used stringent case and control selection criteria and collected menstrual blood from women with a laparoscopic diagnosis of advanced endometriosis and from fertile women without endometriosis. We tested for the first time the stability of 32 candidate reference genes to achieve increased accuracy and reliable results in the quantification of gene expression and direct future experiments using reverse transcription-quantitative PCR (RT-qPCR) in MenMSCs for endometriosis studies. Using the RefFinder web tool, we recommend the EIF2B1 and POP4 reference genes for the normalization of RT-qPCR data in study designs similar to ours. Furthermore, we suggest avoiding the commonly used GAPDH and ACTB reference genes as they are unstable. This high-visibility study is capable of directing different experimental designs as MenMSCs are derived from a minimally invasive tissue source with multifunctional roles in regenerative medicine.
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Affiliation(s)
- Victoria S Zucherato
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
| | - Leticia B C Penariol
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
| | - Lilian E C M Silva
- Multiuser Laboratory, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Cristiana C Padovan
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
| | - Omero B Poli-Neto
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
| | - Julio C Rosa-E-Silva
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
| | - Rui A Ferriani
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil
- National Institute of Hormones and Woman's Health, CNPq, Porto Alegre, RS, Brazil
| | - Juliana Meola
- Gynecology and Obstetrics Department, Ribeirao Preto Medical School, University of Sao Paulo, Bandeirantes Avenue, 3900, 8th Floor of the Clinic Hospital, Universitary Campus, Ribeirao Preto, SP, 14049-900, Brazil.
- National Institute of Hormones and Woman's Health, CNPq, Porto Alegre, RS, Brazil.
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21
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Zhao W, Pu M, Shen S, Yin F. Geniposide improves insulin resistance through AMPK-mediated Txnip protein degradation in 3T3-L1 adipocytes. Acta Biochim Biophys Sin (Shanghai) 2021; 53:160-169. [PMID: 33349852 DOI: 10.1093/abbs/gmaa157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Indexed: 12/29/2022] Open
Abstract
Thioredoxin-interacting protein (Txnip) has emerged as a key regulator of insulin resistance. In this study, we investigated the roles of geniposide and Txnip in insulin resistance in differentiated 3T3-L1 adipocytes. Our results revealed that geniposide markedly enhanced glucose uptake, increased the protein levels of insulin receptor substrate (IRS)-1 and GLUT-1, and prevented the phosphorylation of IRS-1 and Akt Thr308 induced by insulin resistance in 3T3-L1 adipocytes. We also observed that geniposide accelerated protein degradation of Txnip through proteasome pathway, and knockdown of Txnip with small interfering RNA attenuated the effect of geniposide on insulin signaling molecules, implying that Txnip played a pivotal role in the regulation of insulin signaling molecules by geniposide in 3T3-L1 adipocytes. Furthermore, geniposide induced the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) in the presence of high glucose in differentiated 3T3-L1 adipocytes, while compound C, an inhibitor of AMPK, prevented the effect of geniposide on Txnip degradation and the regulation of glucose uptake and insulin signaling molecules including p-IRS-1, IRS-1, and GLUT-1 in differentiated 3T3-L1 adipocytes. Taken together, all these findings suggest that geniposide improves the insulin signaling defect possibly by AMPK-mediated Txnip degradation in 3T3-L1 adipocytes.
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Affiliation(s)
- Wanjun Zhao
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology of Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Mengru Pu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology of Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Shenli Shen
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology of Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Fei Yin
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology of Technology, Chongqing University of Technology, Chongqing 400054, China
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22
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Fan X, Yao H, Liu X, Shi Q, Lv L, Li P, Wang R, Tang T, Qi K. High-Fat Diet Alters the Expression of Reference Genes in Male Mice. Front Nutr 2020; 7:589771. [PMID: 33330591 PMCID: PMC7732482 DOI: 10.3389/fnut.2020.589771] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/19/2020] [Indexed: 12/17/2022] Open
Abstract
Quantitative PCR (qPCR), the most accurate and sensitive technique for quantifying mRNA expression, and choice of appropriate reference genes for internal error controlling in qPCR are essential to understanding the molecular mechanisms that drive the obesity epidemic and its comorbidities. In this study, using the high-fat diet (HFD)-induced obese mouse model, we assessed the expression of 10 commonly used reference genes to validate gene-expression stability in adipose tissue, liver, and muscle across different time points (4, 8, 12, and 16 weeks after HFD feeding) during the process of obesity. The data were analyzed by the GeNorm, NormFinder, BestKeeper, and Delta-Ct method, and the results showed that the most stable reference genes were different for a specific organ or tissue in a specific time point; however, PPIA, RPLP0, and YWHAZ were the top three most stable reference genes in qPCR experiments on adipose, hepatic tissues, and muscles of mice in diet-induced obesity. In addition, the mostly used genes ACTB and GAPDH were more unstable in the fat and liver, the ACTB mRNA levels were increased in four adipose tissues, and the GAPDH mRNA levels were decreased in four adipose tissues and liver after HFD feeding. These results suggest that PPIA, RPLP0, or YWHAZ may be more appropriate to be used as reference gene than ACTB and GAPDH in the adipose tissue and liver of mice during the process of high-fat diet-induced obesity.
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Affiliation(s)
- Xiuqin Fan
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Hongyang Yao
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Xuanyi Liu
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Qiaoyu Shi
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | | | - Ping Li
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Rui Wang
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Tiantian Tang
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Kemin Qi
- Laboratory of Nutrition and Development, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
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23
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Song H, Mao W, Duan Z, Que Q, Zhou W, Chen X, Li P. Selection and validation of reference genes for measuring gene expression in Toona ciliata under different experimental conditions by quantitative real-time PCR analysis. BMC PLANT BIOLOGY 2020; 20:450. [PMID: 33003996 PMCID: PMC7528382 DOI: 10.1186/s12870-020-02670-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Before studying gene expression of different organisms, it is important to determine the best reference gene. At present, the most accurate method of detecting gene expression is quantitative real-time PCR (RT-qPCR). With this method, reference genes that are stable in different biological systems and under different conditions can be obtained. Toona ciliata Roem (T. ciliata). is a valuable and fast-growing timber specie. In this study, 20 reference genes were identified using RT-qPCR, as a primary prerequisite for future gene expression analysis. Four different methods, geNorm, NormFinder, BestKeeper, and RankAggreg were used to evaluate the expression stability of the 20 candidate reference genes in various tissues under different conditions. RESULTS The experimental results showed that TUB-α was the most stably expressed reference gene across all samples and UBC17 was the most stable in leaves and young stems under Hypsipyla robusta (H. robusta) and methyl jasmonate (MeJA) treatments. In addition, PP2C59 and UBC5B were the best-performing genes in leaves under H. robusta treatment, while HIS1 and ACT7 were the best reference genes in young stems. The two best reference genes were 60S-18 and TUB-α after treatment at 4 °C. The expression of HIS6 and MUB1 was the most stable under PEG6000 treatment. The accuracy of the selected reference genes was verified using the transcription factor MYB3 (TcMYB3) gene. CONCLUSIONS This is the first report to verify the best reference genes for normalizing gene expression in T. ciliata under different conditions, which will facilitate future elucidation of gene regulations in this species.
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Affiliation(s)
- Huiyun Song
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Wenmai Mao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Zhihao Duan
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Qingmin Que
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Wei Zhou
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Xiaoyang Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China
| | - Pei Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, 510642, China.
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, 510642, China.
- South China Agricultural University, College of Forestry and Landscape Architecture, Guangzhou, 510642, China.
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24
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Phosphoproteomics of Acute Cell Stressors Targeting Exercise Signaling Networks Reveal Drug Interactions Regulating Protein Secretion. Cell Rep 2020; 29:1524-1538.e6. [PMID: 31693893 DOI: 10.1016/j.celrep.2019.10.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/09/2019] [Accepted: 09/30/2019] [Indexed: 01/25/2023] Open
Abstract
Exercise engages signaling networks to control the release of circulating factors beneficial to health. However, the nature of these networks remains undefined. Using high-throughput phosphoproteomics, we quantify 20,249 phosphorylation sites in skeletal muscle-like myotube cells and monitor their responses to a panel of cell stressors targeting aspects of exercise signaling in vivo. Integrating these in-depth phosphoproteomes with the phosphoproteome of acute aerobic exercise in human skeletal muscle suggests that co-administration of β-adrenergic and calcium agonists would activate complementary signaling relevant to this exercise context. The phosphoproteome of cells treated with this combination reveals a surprising divergence in signaling from the individual treatments. Remarkably, only the combination treatment promotes multisite phosphorylation of SERBP1, a regulator of Serpine1 mRNA stability, a pro-fibrotic secreted protein. Secretome analysis reveals that the combined treatments decrease secretion of SERPINE1 and other deleterious factors. This study provides a framework for dissecting phosphorylation-based signaling relevant to acute exercise.
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25
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Using RNA-Seq to Identify Reference Genes of the Transition from Brown to White Adipose Tissue in Goats. Animals (Basel) 2020; 10:ani10091626. [PMID: 32927876 PMCID: PMC7552189 DOI: 10.3390/ani10091626] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/02/2020] [Accepted: 09/09/2020] [Indexed: 12/25/2022] Open
Abstract
Simple Summary Brown adipose tissue (BAT) plays important roles in unique non-shivering thermogenesis. It is necessary to select reference genes during the transition process from brown (BAT) to white adipose tissue (WAT) for Quantitative PCR (qPCR) analysis. In this study, CTNNB, PFDN5 and EIF3M, selected from RNA sequencing data, were the most suitable reference genes. The present study provides a detailed analysis of the expression stability of reference genes for the study of gene expression profiling during the transition process from BAT to WAT. Abstract Brown adipose tissues have unique non-shivering thermogenesis functions, can be found in newborn ruminate animals, and then are gradually replaced by white adipose tissues in adulthood. For the purpose of exploring the intrinsic mechanism underlying the conversion process from brown (BAT) to white adipose tissue (WAT), it is necessary to utilize Quantitative PCR (qPCR) to study gene expression profiling. In this study, we identified reference genes that were consistently expressed during the transformation from goat BAT to WAT using RNA-seq data. Then, twelve genes were evaluated as candidate reference genes for qPCR in goat perirenal adipose tissue using three tools (geNorm, Normfinder, and BestKeeper). In addition, the selected reference genes were used to normalize the gene expression of PGC-1α and GPAT4. It was found that traditional reference genes, such as GAPDH, RPLP0, HPRT1, and PPIA were not suitable for target gene normalization. In contrast, CTNNB, PFDN5, and EIF3M, selected from RNA sequencing data, showed the least variation and were recommended as the best reference genes during the transformation from BAT to WAT.
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26
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Biswas D, Dao KT, Mercer A, Cowie AM, Duffley L, El Hiani Y, Kienesberger PC, Pulinilkunnil T. Branched-chain ketoacid overload inhibits insulin action in the muscle. J Biol Chem 2020; 295:15597-15621. [PMID: 32878988 DOI: 10.1074/jbc.ra120.013121] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 08/29/2020] [Indexed: 12/18/2022] Open
Abstract
Branched-chain α-keto acids (BCKAs) are catabolites of branched-chain amino acids (BCAAs). Intracellular BCKAs are cleared by branched-chain ketoacid dehydrogenase (BCKDH), which is sensitive to inhibitory phosphorylation by BCKD kinase (BCKDK). Accumulation of BCKAs is an indicator of defective BCAA catabolism and has been correlated with glucose intolerance and cardiac dysfunction. However, it is unclear whether BCKAs directly alter insulin signaling and function in the skeletal and cardiac muscle cell. Furthermore, the role of excess fatty acids (FAs) in perturbing BCAA catabolism and BCKA availability merits investigation. By using immunoblotting and ultra-performance liquid chromatography MS/MS to analyze the hearts of fasted mice, we observed decreased BCAA-catabolizing enzyme expression and increased circulating BCKAs, but not BCAAs. In mice subjected to diet-induced obesity (DIO), we observed similar increases in circulating BCKAs with concomitant changes in BCAA-catabolizing enzyme expression only in the skeletal muscle. Effects of DIO were recapitulated by simulating lipotoxicity in skeletal muscle cells treated with saturated FA, palmitate. Exposure of muscle cells to high concentrations of BCKAs resulted in inhibition of insulin-induced AKT phosphorylation, decreased glucose uptake, and mitochondrial oxygen consumption. Altering intracellular clearance of BCKAs by genetic modulation of BCKDK and BCKDHA expression showed similar effects on AKT phosphorylation. BCKAs increased protein translation and mTORC1 activation. Pretreating cells with mTORC1 inhibitor rapamycin restored BCKA's effect on insulin-induced AKT phosphorylation. This study provides evidence for FA-mediated regulation of BCAA-catabolizing enzymes and BCKA content and highlights the biological role of BCKAs in regulating muscle insulin signaling and function.
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Affiliation(s)
- Dipsikha Biswas
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Khoi T Dao
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Angella Mercer
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Andrew M Cowie
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Luke Duffley
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Yassine El Hiani
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Petra C Kienesberger
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Thomas Pulinilkunnil
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.
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Pérez‐Taboada I, Alberquilla S, Martín ED, Anand R, Vietti‐Michelina S, Tebeka NN, Cantley J, Cragg SJ, Moratalla R, Vallejo M. Diabetes Causes Dysfunctional Dopamine Neurotransmission Favoring Nigrostriatal Degeneration in Mice. Mov Disord 2020; 35:1636-1648. [PMID: 32666590 PMCID: PMC7818508 DOI: 10.1002/mds.28124] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/05/2020] [Accepted: 05/12/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Numerous studies indicate an association between neurodegenerative and metabolic diseases. Although still a matter of debate, growing evidence from epidemiological and animal studies indicate that preexisting diabetes increases the risk to develop Parkinson's disease. However, the mechanisms of such an association are unknown. OBJECTIVES We investigated whether diabetes alters striatal dopamine neurotransmission and assessed the vulnerability of nigrostriatal neurons to neurodegeneration. METHODS We used streptozotocin-treated and genetically diabetic db/db mice. Expression of oxidative stress and nigrostriatal neuronal markers and levels of dopamine and its metabolites were monitored. Dopamine release and uptake were assessed using fast-scan cyclic voltammetry. 6-Hydroxydopamine was unilaterally injected into the striatum using stereotaxic surgery. Motor performance was scored using specific tests. RESULTS Diabetes resulted in oxidative stress and decreased levels of dopamine and its metabolites in the striatum. Levels of proteins regulating dopamine release and uptake, including the dopamine transporter, the Girk2 potassium channel, the vesicular monoamine transporter 2, and the presynaptic vesicle protein synaptobrevin-2, were decreased in diabetic mice. Electrically evoked levels of extracellular dopamine in the striatum were enhanced, and altered dopamine uptake was observed. Striatal microinjections of a subthreshold dose of the neurotoxin 6-hydroxydopamine in diabetic mice, insufficient to cause motor alterations in nondiabetic animals, resulted in motor impairment, higher loss of striatal dopaminergic axons, and decreased neuronal cell bodies in the substantia nigra. CONCLUSIONS Our results indicate that diabetes promotes striatal oxidative stress, alters dopamine neurotransmission, and increases vulnerability to neurodegenerative damage leading to motor impairment. © 2020 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Iara Pérez‐Taboada
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de MadridMadridSpain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas CIBERDEMMadridSpain
| | - Samuel Alberquilla
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC)MadridSpain
| | - Eduardo D. Martín
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC)MadridSpain
| | - Rishi Anand
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordOxfordUnited Kingdom
| | | | - Nchimunya N. Tebeka
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordOxfordUnited Kingdom
- Division of Systems MedicineUniversity of Dundee, Ninewells Hospital & Medical SchoolDundeeUnited Kingdom
| | - James Cantley
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordOxfordUnited Kingdom
- Division of Systems MedicineUniversity of Dundee, Ninewells Hospital & Medical SchoolDundeeUnited Kingdom
| | - Stephanie J. Cragg
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordOxfordUnited Kingdom
- Oxford Parkinson's Disease CentreUniversity of OxfordOxfordUnited Kingdom
| | - Rosario Moratalla
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC)MadridSpain
- CIBERNED, Instituto de Salud Carlos IIIMadridSpain
| | - Mario Vallejo
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de MadridMadridSpain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas CIBERDEMMadridSpain
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28
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A lysosome independent role for TFEB in activating DNA repair and inhibiting apoptosis in breast cancer cells. Biochem J 2020; 477:137-160. [PMID: 31820786 DOI: 10.1042/bcj20190596] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/25/2019] [Accepted: 12/10/2019] [Indexed: 12/17/2022]
Abstract
Transcription factor EB (TFEB) is a master regulator of lysosomal biogenesis and autophagy with critical roles in several cancers. Lysosomal autophagy promotes cancer survival through the degradation of toxic molecules and the maintenance of adequate nutrient supply. Doxorubicin (DOX) is the standard of care treatment for triple-negative breast cancer (TNBC); however, chemoresistance at lower doses and toxicity at higher doses limit its usefulness. By targeting pathways of survival, DOX can become an effective antitumor agent. In this study, we examined the role of TFEB in TNBC and its relationship with autophagy and DNA damage induced by DOX. In TNBC cells, TFEB was hypo-phosphorylated and localized to the nucleus upon DOX treatment. TFEB knockdown decreased the viability of TNBC cells while increasing caspase-3 dependent apoptosis. Additionally, inhibition of the TFEB-phosphatase calcineurin sensitized cells to DOX-induced apoptosis in a TFEB dependent fashion. Regulation of apoptosis by TFEB was not a consequence of altered lysosomal function, as TFEB continued to protect against apoptosis in the presence of lysosomal inhibitors. RNA-Seq analysis of MDA-MB-231 cells with TFEB silencing identified a down-regulation in cell cycle and homologous recombination genes while interferon-γ and death receptor signaling genes were up-regulated. In consequence, TFEB knockdown disrupted DNA repair following DOX, as evidenced by persistent γH2A.X detection. Together, these findings describe in TNBC a novel lysosomal independent function for TFEB in responding to DNA damage.
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29
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Sarkar S, Legere S, Haidl I, Marshall J, MacLeod JB, Aguiar C, Lutchmedial S, Hassan A, Brunt KR, Kienesberger P, Pulinilkunnil T, Légaré JF. Serum GDF15, a Promising Biomarker in Obese Patients Undergoing Heart Surgery. Front Cardiovasc Med 2020; 7:103. [PMID: 32671100 PMCID: PMC7327098 DOI: 10.3389/fcvm.2020.00103] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/18/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Obesity is a risk factor that negatively impacts outcomes in patients undergoing heart surgery by mechanisms that are not well-defined nor predicated on BMI alone. This knowledge gap has fuelled a search for biomarkers associated with cardiovascular diseases that could provide clinical insight to surgeons. One such biomarker is growth differentiation factor15(GDF15), associated with inflammation, metabolism, and heart failure outcomes but not yet examined in the context of obesity and cardiac surgery outcomes. Methods: Patients undergoing open-heart surgery were consented and enrolled for blood and tissue (atria) sampling at the time of surgery. Biomarker analysis was carried out using ELISA and western blot/qPCR, respectively. Biomarker screening was classified by inflammation(NLR, GDF15, Galectin3, ST2, TNFR2), heart failure(HF)/remodeling(NT-proBNP) and metabolism(glycemia, lipid profile). Patients were categorized based on BMI: obese group (BMI ≥30.0) and non-obese group(BMI 20.0–29.9). Subsequent stratification of GDF15 high patients was conservatively set as being in the 75th percentile. Results: A total of 80 patients undergoing any open-heart surgical interventions were included in the study. Obese (mean BMI = 35.8, n = 38) and non-obese (mean BMI = 25.7, n = 42) groups had no significant differences in age, sex, or co-morbidities. Compared to other biomarkers, plasma GDF15 (mean 1,736 vs. 1,207 ng/l, p < 0.001) was significantly higher in obese patients compared to non-obese. Plasma GDF15 also displayed a significant linear correlation with BMI (R2 = 0.097; p = 0.0049). Atria tissue was shown to be a significant source of GDF15 protein and tissue levels significantly correlated with plasma GDF15 (R2 = 0.4, p = 0.0004). Obesity was not associated with early/late mortality at median follow-up >2years. However, patients with high GDF15 (>1,580 ng/l) had reduced survival (65%) compared to the remaining patients with lower GDF15 levels (95%) by Kaplan Meier Analysis (median >2 years; p = 0.007). Conclusions: Circulating GDF15 is a salient biomarker likely sourced from heart tissue that appears to predict higher risk obese patients for adverse outcomes. More importantly, elevated GDF15 accounted for more sensitive outcome association than BMI at 2 years post-cardiac surgery, suggesting it heralds links to pathogenicity and should be actively studied prospectively and dynamically in a post-operative follow-up. Trial number: NCT03248921.
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Affiliation(s)
- Shreya Sarkar
- New Brunswick Heart Centre, Saint John, NB, Canada.,Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Stephanie Legere
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Ian Haidl
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Jean Marshall
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | | | - Christie Aguiar
- New Brunswick Heart Centre, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Sohrab Lutchmedial
- New Brunswick Heart Centre, Saint John, NB, Canada.,Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Ansar Hassan
- New Brunswick Heart Centre, Saint John, NB, Canada.,Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Keith R Brunt
- New Brunswick Heart Centre, Saint John, NB, Canada.,Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada.,Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
| | - Petra Kienesberger
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada.,Department of Biochemistry, Dalhousie University, Halifax, NS, Canada
| | - Thomas Pulinilkunnil
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada.,Department of Biochemistry, Dalhousie University, Halifax, NS, Canada
| | - Jean-François Légaré
- New Brunswick Heart Centre, Saint John, NB, Canada.,Dalhousie Medicine New Brunswick, Saint John, NB, Canada.,IMPART Investigator Team Canada, Saint John, NB, Canada
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30
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Bustelo M, Bruno MA, Loidl CF, Rey-Funes M, Steinbusch HWM, Gavilanes AWD, van den Hove DLA. Statistical differences resulting from selection of stable reference genes after hypoxia and hypothermia in the neonatal rat brain. PLoS One 2020; 15:e0233387. [PMID: 32437382 PMCID: PMC7241816 DOI: 10.1371/journal.pone.0233387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/04/2020] [Indexed: 12/18/2022] Open
Abstract
Real-time reverse transcription PCR (qPCR) normalized to an internal reference gene (RG), is a frequently used method for quantifying gene expression changes in neuroscience. Although RG expression is assumed to be constant independent of physiological or experimental conditions, several studies have shown that commonly used RGs are not expressed stably. The use of unstable RGs has a profound effect on the conclusions drawn from studies on gene expression, and almost universally results in spurious estimation of target gene expression. Approaches aimed at selecting and validating RGs often make use of different statistical methods, which may lead to conflicting results. Based on published RG validation studies involving hypoxia the present study evaluates the expression of 5 candidate RGs (Actb, Pgk1, Sdha, Gapdh, Rnu6b) as a function of hypoxia exposure and hypothermic treatment in the neonatal rat cerebral cortex–in order to identify RGs that are stably expressed under these experimental conditions–using several statistical approaches that have been proposed to validate RGs. In doing so, we first analyzed RG ranking stability proposed by several widely used statistical methods and related tools, i.e. the Coefficient of Variation (CV) analysis, GeNorm, NormFinder, BestKeeper, and the ΔCt method. Using the Geometric mean rank, Pgk1 was identified as the most stable gene. Subsequently, we compared RG expression patterns between the various experimental groups. We found that these statistical methods, next to producing different rankings per se, all ranked RGs displaying significant differences in expression levels between groups as the most stable RG. As a consequence, when assessing the impact of RG selection on target gene expression quantification, substantial differences in target gene expression profiles were observed. Altogether, by assessing mRNA expression profiles within the neonatal rat brain cortex in hypoxia and hypothermia as a showcase, this study underlines the importance of further validating RGs for each individual experimental paradigm, considering the limitations of the statistical methods used for this aim.
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Affiliation(s)
- Martín Bustelo
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
- Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina
- Laboratorio de Neuropatología Experimental, Instituto de Biología Celular y Neurociencia “Prof. E. De Robertis” (IBCN), Facultad de Medicina, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
- * E-mail:
| | - Martín A. Bruno
- Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina
| | - César F. Loidl
- Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina
- Laboratorio de Neuropatología Experimental, Instituto de Biología Celular y Neurociencia “Prof. E. De Robertis” (IBCN), Facultad de Medicina, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Manuel Rey-Funes
- Laboratorio de Neuropatología Experimental, Instituto de Biología Celular y Neurociencia “Prof. E. De Robertis” (IBCN), Facultad de Medicina, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Harry W. M. Steinbusch
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
| | - Antonio W. D. Gavilanes
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
- Instituto de Investigación e Innovación de Salud Integral, Facultad de Ciencias Médicas, Universidad Católica de Santiago de Guayaquil, Guayaquil, Ecuador
| | - D. L. A. van den Hove
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
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31
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Pérez LJ, Lanka S, DeShambo VJ, Fredrickson RL, Maddox CW. A Validated Multiplex Real-Time PCR Assay for the Diagnosis of Infectious Leptospira spp.: A Novel Assay for the Detection and Differentiation of Strains From Both Pathogenic Groups I and II. Front Microbiol 2020; 11:457. [PMID: 32265882 PMCID: PMC7100377 DOI: 10.3389/fmicb.2020.00457] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 03/04/2020] [Indexed: 12/12/2022] Open
Abstract
Leptospirosis is recognized as the most globally widespread reemerging zoonosis and represents a serious threat for both human and animal health. Indeed, leptospirosis is linked to more than 60,000 human deaths per year and to incalculable economic burden as consequence of medical treatment costs and livestock loss. The increasing number of reports from species of pathogenic Leptospira spp. group II causing disease in both humans and animals constitutes an additional concern to the complex epidemiology of this zoonotic agent. Diagnostic methods based on qPCR have improved the diagnosis of Leptospira spp. in terms of cost, time, and reliability, but most of the validated assays fail to detect species from the pathogenic group II. Hence, the current study was aimed to develop and validate a novel multiplex qPCR to enable the specific and selective detection of the whole group of infectious Leptospira spp., including both pathogenic groups I and II and moreover, selectively discriminate between them. To fit the "fitness of purpose" for the specific detection of infectious Leptospira spp. and further discrimination between both pathogenic groups three target regions on the 16S RNA gene were selected. These targets facilitated a broad and selective spectrum for the detection of all infectious Leptospira spp. with the exclusion of all saprophytic groups and the novel clade of environmental Leptospira spp. The analytical sensitivity (ASe) showed by the new assay also enables a wide window of detection for the agent at different stages of infection since the assay was able to efficiently detect at 95% of confidence ∼5 leptospires/reaction. From the evaluation of the analytical specificity (ASp) by in silico and in vitro approaches, it was congruently revealed that the primers and probes selected only recognized the specific targets for which the assay was intended. Bayesian latent class analysis of performance of the new assay on 684 clinical samples showed values of diagnostic sensitivity of 99.8% and diagnostic specificity of 100%. Thus, from the evaluation of the analytical and diagnostic parameters, the new multiplex qPCR assay is a reliable method for the diagnosis of Leptospira spp.
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Affiliation(s)
- Lester J. Pérez
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Saraswathi Lanka
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Vanessa J. DeShambo
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Richard L. Fredrickson
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
| | - Carol W. Maddox
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana–Champaign, Urbana, IL, United States
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D’Souza K, Mercer A, Mawhinney H, Pulinilkunnil T, Udenigwe CC, Kienesberger PC. Whey Peptides Stimulate Differentiation and Lipid Metabolism in Adipocytes and Ameliorate Lipotoxicity-Induced Insulin Resistance in Muscle Cells. Nutrients 2020; 12:nu12020425. [PMID: 32041341 PMCID: PMC7071342 DOI: 10.3390/nu12020425] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/30/2020] [Accepted: 02/01/2020] [Indexed: 12/13/2022] Open
Abstract
Deregulation of lipid metabolism and insulin function in muscle and adipose tissue are hallmarks of systemic insulin resistance, which can progress to type 2 diabetes. While previous studies suggested that milk proteins influence systemic glucose homeostasis and insulin function, it remains unclear whether bioactive peptides generated from whey alter lipid metabolism and its accumulation in muscle and adipose tissue. Therefore, we incubated murine 3T3-L1 preadipocytes and C2C12 myotubes with a whey peptide mixture produced through pepsin-pancreatin digestion, mimicking peptides generated in the gut from whey protein hydrolysis, and examined its effect on indicators of lipid metabolism and insulin sensitivity. Whey peptides, particularly those derived from bovine serum albumin (BSA), promoted 3T3-L1 adipocyte differentiation and triacylglycerol (TG) accumulation in accordance with peroxisome proliferator-activated receptor γ (PPARγ) upregulation. Whey/BSA peptides also increased lipolysis and mitochondrial fat oxidation in adipocytes, which was associated with the upregulation of peroxisome proliferator-activated receptor δ (PPARδ). In C2C12 myotubes, whey but not BSA peptides ameliorated palmitate-induced insulin resistance, which was associated with reduced inflammation and diacylglycerol accumulation, and increased sequestration of fatty acids in the TG pool. Taken together, our study suggests that whey peptides generated via pepsin-pancreatin digestion profoundly alter lipid metabolism and accumulation in adipocytes and skeletal myotubes.
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Affiliation(s)
- Kenneth D’Souza
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine, Saint John, NB E2L 4L5 Canada (A.M.); (T.P.)
| | - Angella Mercer
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine, Saint John, NB E2L 4L5 Canada (A.M.); (T.P.)
| | - Hannah Mawhinney
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada;
| | - Thomas Pulinilkunnil
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine, Saint John, NB E2L 4L5 Canada (A.M.); (T.P.)
| | - Chibuike C. Udenigwe
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Petra C. Kienesberger
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine, Saint John, NB E2L 4L5 Canada (A.M.); (T.P.)
- Correspondence: ; Tel.: +1-506-636-6971
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Biswas D, Tozer K, Dao KT, Perez LJ, Mercer A, Brown A, Hossain I, Yip AM, Aguiar C, Motawea H, Brunt KR, Shea J, Legare JF, Hassan A, Kienesberger PC, Pulinilkunnil T. Adverse Outcomes in Obese Cardiac Surgery Patients Correlates With Altered Branched-Chain Amino Acid Catabolism in Adipose Tissue and Heart. Front Endocrinol (Lausanne) 2020; 11:534. [PMID: 32903728 PMCID: PMC7438793 DOI: 10.3389/fendo.2020.00534] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 06/30/2020] [Indexed: 12/22/2022] Open
Abstract
Background: Predicting relapses of post-operative complications in obese patients who undergo cardiac surgery is significantly complicated by persistent metabolic maladaptation associated with obesity. Despite studies supporting the linkages of increased systemic branched-chain amino acids (BCAAs) driving the pathogenesis of obesity, metabolome wide studies have either supported or challenged association of circulating BCAAs with cardiovascular diseases (CVDs). Objective: We interrogated whether BCAA catabolic changes precipitated by obesity in the heart and adipose tissue can be reliable prognosticators of adverse outcomes following cardiac surgery. Our study specifically clarified the correlation between BCAA catabolizing enzymes, cellular BCAAs and branched-chain keto acids (BCKAs) with the severity of cardiometabolic outcomes in obese patients pre and post cardiac surgery. Methods: Male and female patients of ages between 44 and 75 were stratified across different body mass index (BMI) (non-obese = 17, pre-obese = 19, obese class I = 14, class II = 17, class III = 12) and blood, atrial appendage (AA), and subcutaneous adipose tissue (SAT) collected during cardiac surgery. Plasma and intracellular BCAAs and BC ketoacids (BCKAs), tissue mRNA and protein expression and activity of BCAA catabolizing enzymes were assessed and correlated with clinical parameters. Results: Intramyocellular, but not systemic, BCAAs increased with BMI in cardiac surgery patients. In SAT, from class III obese patients, mRNA and protein expression of BCAA catabolic enzymes and BCKA dehydrogenase (BCKDH) enzyme activity was decreased. Within AA, a concomitant increase in mRNA levels of BCAA metabolizing enzymes was observed, independent of changes in BCKDH protein expression or activity. BMI, indices of tissue dysfunction and duration of hospital stay following surgery correlated with BCAA metabolizing enzyme expression and metabolite levels in AA and SAT. Conclusion: This study proposes that in a setting of obesity, dysregulated BCAA catabolism could be an effective surrogate to determine cardiac surgery outcomes and plausibly predict premature re-hospitalization.
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Affiliation(s)
- Dipsikha Biswas
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Kathleen Tozer
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Khoi T. Dao
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Lester J. Perez
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Angella Mercer
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Amy Brown
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Intekhab Hossain
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Alexandra M. Yip
- New Brunswick Heart Centre, Saint John Regional Hospital, Saint John, NB, Canada
| | - Christie Aguiar
- IMPART Investigator Team Canada, Saint John, NB, Canada
- New Brunswick Heart Centre, Saint John Regional Hospital, Saint John, NB, Canada
| | - Hany Motawea
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Keith R. Brunt
- IMPART Investigator Team Canada, Saint John, NB, Canada
- Department of Pharmacology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Jennifer Shea
- Department of Pathology, Dalhousie University, Saint John, NB, Canada
- Department of Laboratory Medicine, Saint John Regional Hospital, Saint John, NB, Canada
| | - Jean F. Legare
- IMPART Investigator Team Canada, Saint John, NB, Canada
- New Brunswick Heart Centre, Saint John Regional Hospital, Saint John, NB, Canada
| | - Ansar Hassan
- IMPART Investigator Team Canada, Saint John, NB, Canada
- New Brunswick Heart Centre, Saint John Regional Hospital, Saint John, NB, Canada
| | - Petra C. Kienesberger
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- IMPART Investigator Team Canada, Saint John, NB, Canada
| | - Thomas Pulinilkunnil
- Department of Biochemistry and Molecular Biology, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- IMPART Investigator Team Canada, Saint John, NB, Canada
- *Correspondence: Thomas Pulinilkunnil
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Zapata FJ, Rebollo-Hernanz M, Novakofski JE, Nakamura MT, Gonzalez de Mejia E. Caffeine, but not other phytochemicals, in mate tea (Ilex paraguariensis St. Hilaire) attenuates high-fat-high-sucrose-diet-driven lipogenesis and body fat accumulation. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103646] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Sundaram VK, Sampathkumar NK, Massaad C, Grenier J. Optimal use of statistical methods to validate reference gene stability in longitudinal studies. PLoS One 2019; 14:e0219440. [PMID: 31335863 PMCID: PMC6650036 DOI: 10.1371/journal.pone.0219440] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 06/24/2019] [Indexed: 01/25/2023] Open
Abstract
Multiple statistical approaches have been proposed to validate reference genes in qPCR assays. However, conflicting results from these statistical methods pose a major hurdle in the choice of the best reference genes. Recent studies have proposed the use of at least three different methods but there is no consensus on how to interpret conflicting results. Researchers resort to averaging the stability ranks assessed by different approaches or attributing a weighted rank to candidate genes. However, we report here that the suitability of these validation methods can be influenced by the experimental setting. Therefore, averaging the ranks can lead to suboptimal assessment of stable reference genes if the method used is not suitable for analysis. As the respective approaches of these statistical methods are different, a clear understanding of the fundamental assumptions and the parameters that influence the calculation of reference gene stability is necessary. In this study, the stability of 10 candidate reference genes (Actb, Gapdh, Tbp, Sdha, Pgk1, Ppia, Rpl13a, Hsp60, Mrpl10, Rps26) was assessed using four common statistical approaches (GeNorm, NormFinder, Coefficient of Variation or CV analysis and Pairwise ΔCt method) in a longitudinal experimental setting. We used the development of the cerebellum and the spinal cord of mice as a model to assess the suitability of these statistical methods for reference gene validation. GeNorm and the Pairwise ΔCt were found to be ill suited due to a fundamental assumption in their stability calculations. Highly correlated genes were given better stability ranks despite significant overall variation. NormFinder fares better but the presence of highly variable genes influences the ranking of all genes because of the algorithm’s construct. CV analysis estimates overall variation, but it fails to consider variation across groups. We thus highlight the assumptions and potential pitfalls of each method using our longitudinal data. Based on our results, we have devised a workflow combining NormFinder, CV analysis along with visual representation of mRNA fold changes and one-way ANOVA for validating reference genes in longitudinal studies. This workflow proves to be more robust than any of these methods used individually.
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Affiliation(s)
- Venkat Krishnan Sundaram
- Faculty of Basic and Biomedical Sciences, Paris Descartes University, INSERM UMRS 1124, Paris, France
- * E-mail:
| | - Nirmal Kumar Sampathkumar
- Faculty of Basic and Biomedical Sciences, Paris Descartes University, INSERM UMRS 1124, Paris, France
| | - Charbel Massaad
- Faculty of Basic and Biomedical Sciences, Paris Descartes University, INSERM UMRS 1124, Paris, France
| | - Julien Grenier
- Faculty of Basic and Biomedical Sciences, Paris Descartes University, INSERM UMRS 1124, Paris, France
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36
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Dessels C, Pepper MS. Reference Gene Expression in Adipose-Derived Stromal Cells Undergoing Adipogenic Differentiation. Tissue Eng Part C Methods 2019; 25:353-366. [PMID: 31062665 PMCID: PMC6589494 DOI: 10.1089/ten.tec.2019.0076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/06/2019] [Indexed: 02/07/2023] Open
Abstract
IMPACT STATEMENT As the use of adipose-derived stromal cells (ASCs) in clinical trials increases, so does the amount of experimental data from research groups, many of which use human ASCs to study adipogenesis in obesity. Different conditions are constantly being applied to ASCs in vitro, to obtain a therapeutic product for potential downstream applications. Few articles have looked at the effect of different conditions on ASC reference gene (RG) expression and stability, which was the aim of this research, as such this article will assist other researchers to make an informed decision about RG selection for gene expression studies using ASCs including those for adipogenesis.
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Affiliation(s)
- Carla Dessels
- Institute for Cellular and Molecular Medicine, Department of Immunology, and SAMRC Extramural Unit for Stem Cell Research and Therapy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Michael Sean Pepper
- Institute for Cellular and Molecular Medicine, Department of Immunology, and SAMRC Extramural Unit for Stem Cell Research and Therapy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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37
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Role of Arginase 2 in Systemic Metabolic Activity and Adipose Tissue Fatty Acid Metabolism in Diet-Induced Obese Mice. Int J Mol Sci 2019; 20:ijms20061462. [PMID: 30909461 PMCID: PMC6472154 DOI: 10.3390/ijms20061462] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/14/2019] [Accepted: 03/19/2019] [Indexed: 12/23/2022] Open
Abstract
Visceral adipose tissue (VAT) inflammation and metabolic dysregulation are key components of obesity-induced metabolic disease. Upregulated arginase, a ureahydrolase enzyme with two isoforms (A1-cytosolic and A2-mitochondrial), is implicated in pathologies associated with obesity and diabetes. This study examined A2 involvement in obesity-associated metabolic and vascular disorders. WT and globally deleted A2(−/−) or A1(+/−) mice were fed either a high fat/high sucrose (HFHS) diet or normal diet (ND) for 16 weeks. Increases in body and VAT weight of HFHS-fed WT mice were abrogated in A2−/−, but not A1+/−, mice. Additionally, A2−/− HFHS-fed mice exhibited higher energy expenditure, lower blood glucose, and insulin levels compared to WT HFHS mice. VAT and adipocytes from WT HFHS fed mice showed greater A2 expression and adipocyte size and reduced expression of PGC-1α, PPAR-γ, and adiponectin. A2 deletion blunted these effects, increased levels of active AMPK-α, and upregulated genes involved in fatty acid metabolism. A2 deletion prevented HFHS-induced VAT collagen deposition and inflammation, which are involved in adipocyte metabolic dysfunction. Endothelium-dependent vasorelaxation, impaired by HFHS diet, was significantly preserved in A2−/− mice, but more prominently maintained in A1+/− mice. In summary, A2 is critically involved in HFHS-induced VAT inflammation and metabolic dysfunction.
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D'Souza K, Nzirorera C, Cowie AM, Varghese GP, Trivedi P, Eichmann TO, Biswas D, Touaibia M, Morris AJ, Aidinis V, Kane DA, Pulinilkunnil T, Kienesberger PC. Autotaxin-LPA signaling contributes to obesity-induced insulin resistance in muscle and impairs mitochondrial metabolism. J Lipid Res 2018; 59:1805-1817. [PMID: 30072447 DOI: 10.1194/jlr.m082008] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 06/26/2018] [Indexed: 01/14/2023] Open
Abstract
Autotaxin (ATX) is an adipokine that generates the bioactive lipid, lysophosphatidic acid (LPA). ATX-LPA signaling has been implicated in diet-induced obesity and systemic insulin resistance. However, it remains unclear whether the ATX-LPA pathway influences insulin function and energy metabolism in target tissues, particularly skeletal muscle, the major site of insulin-stimulated glucose disposal. The objective of this study was to test whether the ATX-LPA pathway impacts tissue insulin signaling and mitochondrial metabolism in skeletal muscle during obesity. Male mice with heterozygous ATX deficiency (ATX+/-) were protected from obesity, systemic insulin resistance, and cardiomyocyte dysfunction following high-fat high-sucrose (HFHS) feeding. HFHS-fed ATX+/- mice also had improved insulin-stimulated AKT phosphorylation in white adipose tissue, liver, heart, and skeletal muscle. Preserved insulin-stimulated glucose transport in muscle from HFHS-fed ATX+/- mice was associated with improved mitochondrial pyruvate oxidation in the absence of changes in fat oxidation and ectopic lipid accumulation. Similarly, incubation with LPA decreased insulin-stimulated AKT phosphorylation and mitochondrial energy metabolism in C2C12 myotubes at baseline and following palmitate-induced insulin resistance. Taken together, our results suggest that the ATX-LPA pathway contributes to obesity-induced insulin resistance in metabolically relevant tissues. Our data also suggest that LPA directly impairs skeletal muscle insulin signaling and mitochondrial function.
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Affiliation(s)
- Kenneth D'Souza
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Carine Nzirorera
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Andrew M Cowie
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Geena P Varghese
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Purvi Trivedi
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Thomas O Eichmann
- Institute of Molecular Biosciences, University of Graz and Center for Explorative Lipidomics, BioTechMed-Graz, 8010 Graz, Austria
| | - Dipsikha Biswas
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Mohamed Touaibia
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, New Brunswick E1A 3E9, Canada
| | - Andrew J Morris
- Division of Cardiovascular Medicine, University of Kentucky, Lexington, KY 40536 and Lexington Veterans Affairs Medical Center, Lexington, KY 40511
| | - Vassilis Aidinis
- Division of Immunology, Biomedical Sciences Research Center "Alexander Fleming", 16672 Athens, Greece
| | - Daniel A Kane
- Department of Human Kinetics, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Thomas Pulinilkunnil
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
| | - Petra C Kienesberger
- Dalhousie Medicine New Brunswick, Department of Biochemistry and Molecular Biology, Dalhousie University, Saint John, New Brunswick E2L 4L5, Canada
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Wang B, Du H, Yao Z, Ren C, Ma L, Wang J, Zhang H, Ma H. Validation of reference genes for accurate normalization of gene expression with quantitative real-time PCR in Haloxylon ammodendron under different abiotic stresses. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018; 24:455-463. [PMID: 29692553 PMCID: PMC5911265 DOI: 10.1007/s12298-018-0520-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/20/2017] [Accepted: 02/08/2018] [Indexed: 05/27/2023]
Abstract
Haloxylon ammodendron plays an important role in maintaining the structure and function of the entire ecosystem where it grows. No suitable reference genes have been reported in H. ammodendron plants to date. In this study, a total of 8 reference genes (18S, ACT1, ACT7, UBC18, TUA5, GAPDH, EF-1α and UBQ10) were selected from the available trancriptome database, and the expression stability of these 8 candidate genes was validated under different abiotic stress with three different statistical algorithms (geNorm, NormFinder and BestKeeper). The results produced from different models were in agreement with each other essentially: 18S and TUA5 were the most stable genes under drought stress, 18S, the most stable gene under heat stress and mechanical damage, ACT7 and UBC18, stable under salt stress while TUA5 and GAPDH expressed constantly under mechanical damage, and ACT1 expressed steadily under cold conditions. Expression profiles of several stress response genes, including FT-5, FT-9, DREB2A and DREB2C, were further confirmed with various candidate reference genes. None of the candidate genes showed a constant expression among all tested samples. Hence, it's essential to use more than one reference gene in order to guarantee the accuracy of quantitative real-time PCR. The results of this study will contribute to the accuracy and reliability in transcripts quantification, which is of significance to transcription-based studies and applications in this important shrub H. ammodendron.
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Affiliation(s)
- Bo Wang
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Huihui Du
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Zhengpei Yao
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Cai Ren
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Li Ma
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Jiao Wang
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Hua Zhang
- College of Agriculture, Xinjiang Agricultural University, Urumqi, 830052 China
- Institute of Desert in the Arid Areas, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi, 830052 China
| | - Hao Ma
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095 China
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Brown A, Hossain I, Perez LJ, Nzirorera C, Tozer K, D’Souza K, Trivedi PC, Aguiar C, Yip AM, Shea J, Brunt KR, Legare JF, Hassan A, Pulinilkunnil T, Kienesberger PC. Lysophosphatidic acid receptor mRNA levels in heart and white adipose tissue are associated with obesity in mice and humans. PLoS One 2017; 12:e0189402. [PMID: 29236751 PMCID: PMC5728537 DOI: 10.1371/journal.pone.0189402] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/26/2017] [Indexed: 11/19/2022] Open
Abstract
Background Lysophosphatidic acid (LPA) receptor signaling has been implicated in cardiovascular and obesity-related metabolic disease. However, the distribution and regulation of LPA receptors in the myocardium and adipose tissue remain unclear. Objectives This study aimed to characterize the mRNA expression of LPA receptors (LPA1-6) in the murine and human myocardium and adipose tissue, and its regulation in response to obesity. Methods LPA receptor mRNA levels were determined by qPCR in i) heart ventricles, isolated cardiomyocytes, and perigonadal adipose tissue from chow or high fat-high sucrose (HFHS)-fed male C57BL/6 mice, ii) 3T3-L1 adipocytes and HL-1 cardiomyocytes under conditions mimicking gluco/lipotoxicity, and iii) human atrial and subcutaneous adipose tissue from non-obese, pre-obese, and obese cardiac surgery patients. Results LPA1-6 were expressed in myocardium and white adipose tissue from mice and humans, except for LPA3, which was undetectable in murine adipocytes and human adipose tissue. Obesity was associated with increased LPA4, LPA5 and/or LPA6 levels in mice ventricles and cardiomyocytes, HL-1 cells exposed to high palmitate, and human atrial tissue. LPA4 and LPA5 mRNA levels in human atrial tissue correlated with measures of obesity. LPA5 mRNA levels were increased in HFHS-fed mice and insulin resistant adipocytes, yet were reduced in adipose tissue from obese patients. LPA4, LPA5, and LPA6 mRNA levels in human adipose tissue were negatively associated with measures of obesity and cardiac surgery outcomes. This study suggests that obesity leads to marked changes in LPA receptor expression in the murine and human heart and white adipose tissue that may alter LPA receptor signaling during obesity.
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Affiliation(s)
- Amy Brown
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Intekhab Hossain
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Lester J. Perez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Carine Nzirorera
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Kathleen Tozer
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Kenneth D’Souza
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Purvi C. Trivedi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Christie Aguiar
- Cardiovascular Research New Brunswick, Saint John Regional Hospital, Saint John, New Brunswick, Canada
| | - Alexandra M. Yip
- Cardiovascular Research New Brunswick, Saint John Regional Hospital, Saint John, New Brunswick, Canada
| | - Jennifer Shea
- Department of Pathology, Saint John Regional Hospital, Saint John, New Brunswick, Canada
| | - Keith R. Brunt
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Jean-Francois Legare
- Cardiovascular Research New Brunswick, Saint John Regional Hospital, Saint John, New Brunswick, Canada
- Department of Cardiac Surgery, New Brunswick Heart Centre, Saint John, New Brunswick, Canada
| | - Ansar Hassan
- Cardiovascular Research New Brunswick, Saint John Regional Hospital, Saint John, New Brunswick, Canada
- Department of Cardiac Surgery, New Brunswick Heart Centre, Saint John, New Brunswick, Canada
| | - Thomas Pulinilkunnil
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
| | - Petra C. Kienesberger
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada
- * E-mail:
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