1
|
Amo-Aparicio J, Dinarello CA, Lopez-Vales R. Metabolic reprogramming of the inflammatory response in the nervous system: the crossover between inflammation and metabolism. Neural Regen Res 2024; 19:2189-2201. [PMID: 38488552 PMCID: PMC11034585 DOI: 10.4103/1673-5374.391330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/25/2023] [Accepted: 11/13/2023] [Indexed: 04/24/2024] Open
Abstract
Metabolism is a fundamental process by which biochemicals are broken down to produce energy (catabolism) or used to build macromolecules (anabolism). Metabolism has received renewed attention as a mechanism that generates molecules that modulate multiple cellular responses. This was first identified in cancer cells as the Warburg effect, but it is also present in immunocompetent cells. Studies have revealed a bidirectional influence of cellular metabolism and immune cell function, highlighting the significance of metabolic reprogramming in immune cell activation and effector functions. Metabolic processes such as glycolysis, oxidative phosphorylation, and fatty acid oxidation have been shown to undergo dynamic changes during immune cell response, facilitating the energetic and biosynthetic demands. This review aims to provide a better understanding of the metabolic reprogramming that occurs in different immune cells upon activation, with a special focus on central nervous system disorders. Understanding the metabolic changes of the immune response not only provides insights into the fundamental mechanisms that regulate immune cell function but also opens new approaches for therapeutic strategies aimed at manipulating the immune system.
Collapse
Affiliation(s)
| | | | - Ruben Lopez-Vales
- Institute of Neurosciences, and Department Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Spain
| |
Collapse
|
2
|
Hao Z, Jin X, Hickford JGH, Zhou H, Wang L, Wang J, Luo Y, Hu J, Liu X, Li S, Li M, Shi B, Ren C. Screening and identification of lncRNAs in preadipocyte differentiation in sheep. Sci Rep 2024; 14:5260. [PMID: 38438565 PMCID: PMC10912770 DOI: 10.1038/s41598-024-56091-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 03/01/2024] [Indexed: 03/06/2024] Open
Abstract
Studies of preadipocyte differentiation and fat deposition in sheep have mainly focused on functional genes, and with no emphasis placed on the role that long non-coding RNAs (lncRNAs) may have on the activity of those genes. Here, the expression profile of lncRNAs in ovine preadipocyte differentiation was investigated and the differentially expressed lncRNAs were screened on day 0 (D0), day 2(D2) and day 8(D8) of ovine preadipocyte differentiation, with their target genes being predicted. The competing endogenous RNA (ceRNA) regulatory network was constructed by GO and KEGG enrichment analysis for functional annotation, and some differentially expressed lncRNAs were randomly selected to verify the RNA-Seq results by RT-qPCR. In the study, a total of 2517 novel lncRNAs and 3943 known lncRNAs were identified from ovine preadipocytes at the three stages of differentiation, with the highest proportion being intergenic lncRNAs. A total of 3455 lncRNAs were expressed at all three stages of preadipocyte differentiation, while 214, 226 and 228 lncRNAs were uniquely expressed at day 0, day 2 and day 8, respectively. By comparing the expression of the lncRNAs between the three stages of differentiation stages, a total of 405, 272 and 359 differentially expressed lncRNAs were found in D0-vs-D2, D0-vs-D8, and D2-vs-D8, respectively. Functional analysis revealed that the differentially expressed lncRNAs were enriched in signaling pathways related to ovine preadipocyte differentiation, such as mitogen-activated protein kinase (MAPK) pathway, the phosphoinositide 3-kinase protein kinase B (PI3K-Akt) pathway, and the transforming growth factor beta (TGF-β) pathway. In summary, lncRNAs from preadipocytes at different stages of differentiation in sheep were identified and screened using RNA-Seq technology, and the regulatory mechanisms of lncRNAs in preadipocyte differentiation and lipid deposition were explored. This study provides a theoretical reference for revealing the roles of lncRNAs in ovine preadipocyte differentiation and also offers a theoretical basis for further understanding the regulatory mechanisms of ovine preadipocyte differentiation.
Collapse
Affiliation(s)
- Zhiyun Hao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiayang Jin
- Academic Animal & Veterinary Science, Qinghai University, Xining, China
| | - Jon G H Hickford
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
- Gene-Marker Laboratory, Faculty of Agriculture and Life Science, Lincoln University, Lincoln, 7647, New Zealand
| | - Huitong Zhou
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
- Gene-Marker Laboratory, Faculty of Agriculture and Life Science, Lincoln University, Lincoln, 7647, New Zealand
| | - Longbin Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiqing Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China.
| | - Yuzhu Luo
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jiang Hu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xiu Liu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Mingna Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Bingang Shi
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Chunyan Ren
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| |
Collapse
|
3
|
Bombarda-Rocha V, Silva D, Badr-Eddine A, Nogueira P, Gonçalves J, Fresco P. Challenges in Pharmacological Intervention in Perilipins (PLINs) to Modulate Lipid Droplet Dynamics in Obesity and Cancer. Cancers (Basel) 2023; 15:4013. [PMID: 37568828 PMCID: PMC10417315 DOI: 10.3390/cancers15154013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/01/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Perilipins (PLINs) are the most abundant proteins in lipid droplets (LD). These LD-associated proteins are responsible for upgrading LD from inert lipid storage structures to fully functional organelles, fundamentally integrated in the lipid metabolism. There are five distinct perilipins (PLIN1-5), each with specific expression patterns and metabolic activation, but all capable of regulating the activity of lipases on LD. This plurality creates a complex orchestrated mechanism that is directly related to the healthy balance between lipogenesis and lipolysis. Given the essential role of PLINs in the modulation of the lipid metabolism, these proteins can become interesting targets for the treatment of lipid-associated diseases. Since reprogrammed lipid metabolism is a recognized cancer hallmark, and obesity is a known risk factor for cancer and other comorbidities, the modulation of PLINs could either improve existing treatments or create new opportunities for the treatment of these diseases. Even though PLINs have not been, so far, directly considered for pharmacological interventions, there are many established drugs that can modulate PLINs activity. Therefore, the aim of this study is to assess the involvement of PLINs in diseases related to lipid metabolism dysregulation and whether PLINs can be viewed as potential therapeutic targets for cancer and obesity.
Collapse
Affiliation(s)
- Victória Bombarda-Rocha
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
- UCIBIO–Applied Molecular Biosciences Unit, Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Dany Silva
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
- UCIBIO–Applied Molecular Biosciences Unit, Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Allal Badr-Eddine
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
| | - Patrícia Nogueira
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
- UCIBIO–Applied Molecular Biosciences Unit, Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Jorge Gonçalves
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
- UCIBIO–Applied Molecular Biosciences Unit, Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Paula Fresco
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (V.B.-R.); (D.S.); (A.B.-E.); (P.N.); (P.F.)
- UCIBIO–Applied Molecular Biosciences Unit, Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| |
Collapse
|
4
|
Liu S, Zhang Y, Zheng X, Wang Z, Wang P, Zhang M, Shen M, Bao Y, Li D. Sulforaphane Inhibits Foam Cell Formation and Atherosclerosis via Mechanisms Involving the Modulation of Macrophage Cholesterol Transport and the Related Phenotype. Nutrients 2023; 15:2117. [PMID: 37432260 DOI: 10.3390/nu15092117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 07/12/2023] Open
Abstract
Sulforaphane (SFN), an isothiocyanate, is one of the major dietary phytochemicals found in cruciferous vegetables. Many studies suggest that SFN can protect against cancer and cardiometabolic diseases. Despite the proposed systemic and local vascular protective mechanisms, SFN's potential to inhibit atherogenesis by targeting macrophages remains unknown. In this study, in high fat diet fed ApoE-deficient (ApoE-/-) mice, oral SFN treatment improved dyslipidemia and inhibited atherosclerotic plaque formation and the unstable phenotype, as demonstrated by reductions in the lesion areas in both the aortic sinus and whole aorta, percentages of necrotic cores, vascular macrophage infiltration and reactive oxygen species (ROS) generation. In THP-1-derived macrophages, preadministration SFN alleviated oxidized low-density lipoprotein (ox-LDL)-induced lipid accumulation, oxidative stress and mitochondrial injury. Moreover, a functional study revealed that peritoneal macrophages isolated from SFN-treated mice exhibited attenuated cholesterol influx and enhanced apolipoprotein A-I (apoA-I)- and high-density lipoprotein (HDL)-mediated cholesterol efflux. Mechanistic analysis revealed that SFN supplementation induced both intralesional and intraperitoneal macrophage phenotypic switching toward high expression of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1) and ATP-binding cassette subfamily A/G member 1 (ABCA1/G1) and low expression of peroxisome proliferator-activated receptor γ (PPARγ) and cluster of differentiation 36 (CD36), which was further validated by the aortic protein expression. These results suggest that the regulation of macrophages' cholesterol transport and accumulation may be mainly responsible for SFN's potential atheroprotective properties, and the regulatory mechanisms might involve upregulating ABCA1/G1 and downregulating CD36 via the modulation of PPARγ and Nrf2.
Collapse
Affiliation(s)
- Shiyan Liu
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Yuan Zhang
- Department of Geriatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China
| | - Xiangyu Zheng
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Ziling Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Pan Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Mengdi Zhang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Mengfan Shen
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| | - Yongping Bao
- Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, Norfolk, UK
| | - Dan Li
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510080, China
- Guangdong Engineering Technology Center of Nutrition Transformation, Guangzhou 510080, China
| |
Collapse
|
5
|
Li FZ, Fang S. Adipophilin: roles in physiology and pathology. J Clin Pathol 2023; 76:98-102. [PMID: 36600632 DOI: 10.1136/jcp-2022-208677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022]
Abstract
Adipophilin (ADRP/ADPH/PLIN2), an adipocyte differentiation-related protein, is highly expressed at a very early time during the differentiation of adipocytes. It assists in the formation and maintenance of intracellular lipid droplets and plays a role in regulating the physiological functions of the body. More and more studies indicate that it is involved in the occurrence and development of a variety of glycolipid metabolic diseases and tumours. In this review, we comprehensively stated the expression and functions of adipophilin and introduced its roles in physiology and pathology.
Collapse
Affiliation(s)
- Feng-Zeng Li
- Dermatology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Sheng Fang
- Dermatology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| |
Collapse
|
6
|
Tan SK, Hougen HY, Merchan JR, Gonzalgo ML, Welford SM. Fatty acid metabolism reprogramming in ccRCC: mechanisms and potential targets. Nat Rev Urol 2023; 20:48-60. [PMID: 36192502 PMCID: PMC10826284 DOI: 10.1038/s41585-022-00654-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2022] [Indexed: 01/11/2023]
Abstract
Lipid droplet formation is a defining histological feature in clear-cell renal cell carcinoma (ccRCC) but the underlying mechanisms and importance of this biological behaviour have remained enigmatic. De novo fatty acid (FA) synthesis, uptake and suppression of FA oxidation have all been shown to contribute to lipid storage, which is a necessary tumour adaptation rather than a bystander effect. Clinical studies and mechanistic investigations into the roles of different enzymes in FA metabolism pathways have revealed new metabolic vulnerabilities that hold promise for clinical effect. Several metabolic alterations are associated with worse clinical outcomes in patients with ccRCC, as lipogenic genes drive tumorigenesis. Enzymes involved in the intrinsic FA metabolism pathway include FA synthase, acetyl-CoA carboxylase, ATP citrate lyase, stearoyl-CoA desaturase 1, cluster of differentiation 36, carnitine palmitoyltransferase 1A and the perilipin family, and each might be potential therapeutic targets in ccRCC owing to the link between lipid deposition and ccRCC risk. Adipokines and lipid species are potential biomarkers for diagnosis and treatment monitoring in patients with ccRCC. FA metabolism could potentially be targeted for therapeutic intervention in ccRCC as small-molecule inhibitors targeting the pathway have shown promising results in preclinical models.
Collapse
Affiliation(s)
- Sze Kiat Tan
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Helen Y Hougen
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jaime R Merchan
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Mark L Gonzalgo
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Scott M Welford
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL, USA.
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA.
| |
Collapse
|
7
|
Lei P, Hu Y, Gao P, Ding Q, Yan J, Zhao J, Li B, Shan Y. Sulforaphane Ameliorates Hepatic Lipid Metabolism via Modulating Lipophagy In Vivo and In Vitro. J Agric Food Chem 2022; 70:15126-15133. [PMID: 36420856 DOI: 10.1021/acs.jafc.2c06311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Although sulforaphane (SFN) is reported to ameliorate the excessive accumulation of lipid droplets (LDs) in hepatocytes, its underlying mechanism remains unclear. This paper aims to investigate how SFN induces hepatic LD degradation via activating macroautophagy. High-fat diet and free fatty acids (FFAs) were used to induce excessive LD formation in hepatocytes in vivo and in vitro, respectively. SFN-induced macroautophagy was shown by the increased LC3 protein expression both (1.32 ± 0.18) in vivo and (2.43 ± 0.22) in vitro. The mRNA levels of Lc3 (1.99 ± 0.16), Atg4 (2.12 ± 0.23), Ulk1 (1.19 ± 0.12), Atg7 (1.25 ± 0.11), and Atg5 (0.81 ± 0.1) genes were elevated by SFN. SFN individually enhanced the localization of LC3 (0.41 ± 0.15), LAMP1 (0.66 ± 0.14), ATG7 (0.26 ± 0.08), and ATG5 (0.38 ± 0.09) with LDs, indicating the occurrence of lipophagy. In the components of LDs isolated from SFN treatment, the expressions of LC3, ATG7, and ATG5 protein were largely increased both in vivo and in vitro. LDs were visualized in autophagosomes which confirmed that the lipophagy was triggered by SFN. Moreover, SFN treatment improved the profile of FFAs which was characterized by increasing the FFAs in liver (total FFA: 261.51 ± 39.58 μM/g) and serum (total FFA: 967.59 ± 239.18 nM/mL). After silencing the nrf2 gene, ATG7 and ATG5 protein expressions were decreased and attenuated this induction by SFN. Nrf2 gene silencing inversely increased TG contents. In summary, SFN enhanced the LD degradation via stimulating lipophagy in a Nrf2-dependent manner.
Collapse
Affiliation(s)
- Peng Lei
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
- Department of Food Science and Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Harbin, Heilongjiang 150001, People's Republic of China
| | - Yunqi Hu
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Peng Gao
- Department of Food Science and Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Harbin, Heilongjiang 150001, People's Republic of China
| | - Qi Ding
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Jielin Yan
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Jiahe Zhao
- Center of Safety and Evaluation of Drugs, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, People's Republic of China
| | - Baolong Li
- Center of Safety and Evaluation of Drugs, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, People's Republic of China
| | - Yujuan Shan
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
| |
Collapse
|
8
|
Zhou Y, Wang Y, Ni C, Wang H, Zhou J, Wan B, Li H, Li F, Huang R, Xu W, Shan T, Cai T, Kong X, Liu B, Liu X, Sun Z, Ma J. Perilipin 2 Protects against Lipotoxicity-Induced Islet Fibrosis by Inducing Islet Stellate Cell Activation Phenotype Changes. Biomed Res Int 2022; 2022:4581405. [PMID: 35845956 DOI: 10.1155/2022/4581405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/20/2022] [Indexed: 11/17/2022]
Abstract
Aims We explored whether and how perilipin 2 (Plin2) protected islets against lipotoxicity-induced islet dysfunction by regulating islet stellate cells (ISCs) activation. Methods Six-week-old male rats were given a high-fat diet or a control diet for 28 weeks. Glucose metabolic phenotypes were assessed using glucose/insulin tolerance tests, masson, and immunohistochemical staining. ISCs activation levels were assessed from rats and palmitic acid- (PA-) treated cultured ISCs by immunofluorescence, Oil red O staining, electron microscopy, quantitative PCR, and western blotting. Changes in ISCs phenotype of activation degree and its underlying mechanisms were assessed by target gene lentiviral infection, high-performance liquid chromatography (HPLC), and western blotting. Results Obese rats showed glucose intolerance, decreased endocrine hormone profiles, and elevated expression of α-smooth muscle actin (α-SMA), a polygonal appearance without cytoplasmic lipid droplets of ISCs in rats and isolated islets. PA-treated cultured ISCs exhibited faster proliferation and migration abilities with the induction of mRNA levels of lipid metabolism proteins, especially Plin2. The overexpression of Plin2 resulted in ISCs “re-quiescent” phenotypes associated with inhibition of the Smad3-TGF-β signaling pathways. Conclusions Our observations suggest a protective role of Plin2 in weakening ISCs activation. It may serve as a novel therapeutic target for preventing islet fibrosis for T2DM.
Collapse
|
9
|
Al-Bulish MSM, Cao W, Yang R, Wang Y, Xue C, Tang Q. Docosahexaenoic acid-rich fish oil alleviates hepatic steatosis in association with regulation of gut microbiome in ob/ob mice. Food Res Int 2022; 157:111373. [PMID: 35761631 DOI: 10.1016/j.foodres.2022.111373] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 11/04/2022]
Abstract
It remains to study whether docosahexaenoic acid-rich fish oil (DHA-FO) improves hepatic lipid metabolism by leptin-independent mechanisms. We used ob/ob mice as a model to investigate the effects of DHA-FO on hepatic steatosis. DHA-FO inhibited lipid droplets (LD) formation in liver of ob/ob mice. Probably because DHA-FO consumption prevented the accumulation of oleic acid, and suppressed the synthesis of triglycerides and cholesteryl esters. These beneficial effects might be concerned with the promotion of short chain fatty acids (SCFAs) production. Furthermore, DHA-FO could reverse gut bacteria dysbiosis, including increasing the abundance of SCFAs producers (e.g. Akkermansia and unclassified_Muribaculaceae), and suppressing the proliferation of conditional pathogenic bacteria, such as unclassified_Lachnospiraceae. DHA-FO also promoted colonic microbial function ("Glycerolipid metabolism") associated with lipid metabolism. As a potential ingredient for functional food, DHA-FO reduced LD accumulation, which might be associated with modulation of obesity-linked gut microbiome in ob/ob mice.
Collapse
Affiliation(s)
| | - Wanxiu Cao
- Marine Biomedical Research Institute of Qingdao, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ruili Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Yuming Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Qingjuan Tang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
| |
Collapse
|
10
|
Berenice Martínez-Shio E, Martín Cárdenas-Hernández Á, Jiménez-Suárez V, Sherell Marín-Jáuregui L, Castillo-Martin del Campo C, González-Amaro R, Escobedo-Uribe CD, Monsiváis-Urenda AE. Differentiation of circulating monocytes into macrophages with metabolically activated phenotype regulates inflammation in dyslipidemia patients. Clin Exp Immunol 2022; 208:83-94. [PMID: 35274685 PMCID: PMC9113394 DOI: 10.1093/cei/uxac013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/24/2021] [Accepted: 01/27/2022] [Indexed: 02/04/2023] Open
Abstract
Macrophages are mediators of inflammation having an important role in the pathogenesis of cardiovascular diseases. Recently, a pro-inflammatory subpopulation, known as metabolically activated macrophages (MMe), has been described in conditions of obesity and metabolic syndrome where they are known to release cytokines that can promote insulin resistance. Dyslipidemia represents an important feature in metabolic syndrome and corresponds to one of the main modifiable risk factors for the development of cardiovascular diseases. Circulating monocytes can differentiate into macrophages under certain conditions. They correspond to a heterogeneous population, which include inflammatory and anti-inflammatory subsets; however, there is a wide spectrum of phenotypes. Therefore, we decided to investigate whether the metabolic activated monocyte (MoMe) subpopulation is already present under dyslipidemia conditions. Secondly, we assessed whether different levels of cholesterol and triglycerides play a role in the polarization towards the metabolic phenotype (MMe) of macrophages. Our results indicate that MoMe cells are found in both healthy and dyslipidemia patients, with cells displaying the following metabolic phenotype: CD14varCD36+ABCA1+PLIN2+. Furthermore, the percentages of CD14++CD68+CD80+ pro-inflammatory monocytes are higher in dyslipidemia than in healthy subjects. When analysing macrophage differentiation, we observed that MMe percentages were higher in the dyslipidemia group than in healthy subjects. These MMe have the ability to produce high levels of IL-6 and the anti-inflammatory cytokine IL-10. Furthermore, ABCA1 expression in MMe correlates with LDL serum levels. Our study highlights the dynamic contributions of metabolically activated macrophages in dyslipidemia, which may have a complex participation in low-grade inflammation due to their pro- and anti-inflammatory function.
Collapse
Affiliation(s)
- Elena Berenice Martínez-Shio
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Ángel Martín Cárdenas-Hernández
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Verónica Jiménez-Suárez
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Laura Sherell Marín-Jáuregui
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Claudia Castillo-Martin del Campo
- Laboratorio de Células Neurales Troncales, CIACYT-Facultad de Medicina, Universidad Autonoma de
San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Roberto González-Amaro
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Carlos D Escobedo-Uribe
- Departamento de Cardiología, Soporte Vital, Facultad de Medicina, Universidad Autonoma de
San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| | - Adriana Elizabeth Monsiváis-Urenda
- Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Medicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi, San Luis Potosi, Mexico
| |
Collapse
|
11
|
Zhang X, Xu W, Xu R, Wang Z, Zhang X, Wang P, Peng K, Li M, Li J, Tan Y, Wang X, Pei H, Hrnčić D. Plin5 Bidirectionally Regulates Lipid Metabolism in Oxidative Tissues. Oxidative Medicine and Cellular Longevity 2022; 2022:1-11. [PMID: 35401929 PMCID: PMC8989587 DOI: 10.1155/2022/4594956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 10/08/2021] [Accepted: 03/16/2022] [Indexed: 11/20/2022]
Abstract
Cytoplasmic lipid droplets (LDs) can store neutral lipids as an energy source when needed and also regulate the key metabolic processes of intracellular lipid accumulation, which is associated with several metabolic diseases. The perilipins (Plins) are a family of proteins that associate with the surface of LDs. As a member of Plins superfamily, perilipin 5 (Plin5) coats LDs in cardiomyocytes, which is significantly related to reactive oxygen species (ROS) production originated from mitochondria in the heart, consequently determining the progression of diabetic cardiomyopathy. Plin5 may play a bidirectional function in lipid metabolism which is in a state of dynamic balance. In the basic state, Plin5 inhibited the binding of comparative gene identification-58 (CGI-58) to adipose triglyceride lipase (ATGL) by binding CGI-58, thus inhibiting lipolysis. However, when the body is under stress (such as cold, fasting, exercise, and other stimuli), protein kinase A (PKA) phosphorylates and activates Plin5, which then causes Plin5 to release the binding site of CGI-58 and ATGL, prompting CGI-58 to bind to ATGL and activate ATGL activity, thus accelerating the lipolysis process, revealing the indispensable role of Plin5 in lipid turnover. Here, the purpose of this review is to summarize the present understanding of the bidirectional regulation role of Plin5 in oxidative tissues and to reveal its potential role in diabetic cardiomyopathy protection.
Collapse
|
12
|
Wei D, Sun Q, Li Y, Li C, Li X, Sun C. Leptin Reduces Plin5 m 6A Methylation through FTO to Regulate Lipolysis in Piglets. Int J Mol Sci 2021; 22:10610. [PMID: 34638947 DOI: 10.3390/ijms221910610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 12/17/2022] Open
Abstract
Perilipin5 (Plin5) is a scaffold protein that plays an important role in lipid droplets (LD) formation, but the regulatory effect of leptin on it is unclear. Our study aimed to explore the underlying mechanisms by which leptin reduces the N6-methyladenosine (m6A) methylation of Plin5 through fat mass and obesity associated genes (FTO) and regulates the lipolysis. To this end, 24 Landrace male piglets (7.73 ± 0.38 kg) were randomly sorted into two groups, either a control group (Control, n = 12) or a 1 mg/kg leptin recombinant protein treatment group (Leptin, n = 12). After 4 weeks of treatment, the results showed that leptin treatment group had lower body weight, body fat percentage and blood lipid levels, but the levels of Plin5 mRNA and protein increased significantly in adipose tissue (p < 0.05). Leptin promotes the up-regulation of FTO expression level in vitro, which in turn leads to the decrease of Plin5 M6A methylation (p < 0.05). In in vitro porcine adipocytes, overexpression of FTO aggravated the decrease of M6A methylation and increased the expression of Plin5 protein, while the interference fragment of FTO reversed the decrease of m6A methylation (p < 0.05). Finally, the overexpression in vitro of Plin5 significantly reduces the size of LD, promotes the metabolism of triglycerides and the operation of the mitochondrial respiratory chain, and increases thermogenesis. This study clarified that leptin can regulate Plin5 M6A methylation by promoting FTO to affect the lipid metabolism and energy consumption, providing a theoretical basis for treating diseases related to obesity.
Collapse
|
13
|
Tian S, Lei P, Zhang J, Sun Y, Li B, Shan Y. Sulforaphane Balances Ca 2+ Homeostasis Injured by Excessive Fat via Mitochondria-Associated Membrane (MAM). Mol Nutr Food Res 2021; 65:e2001076. [PMID: 33929090 DOI: 10.1002/mnfr.202001076] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/23/2021] [Indexed: 11/10/2022]
Abstract
SCOPE Mitochondria-associated membrane (MAM) connects endoplasmic reticulum (ER) and mitochondria plays a significant role in lipid metabolism and Ca2+ homeostasis. Albeit sulforaphane (SFN) shows potential in ameliorating excessive fat accumulation and mitochondrial function; whether MAM is a target of SFN and its underlying mechanisms are still unclear. METHODS AND RESULTS High-fat-intake models are established both in vivo and in vitro. SFN widens the distance between ER and mitochondria and down-regulates MAM tether protein mitofusin-2. SFN reverses the increase of Ca2+ induced by fatty acid and inhibits the Ca2+ channel inositol-1,4,5-trisphosphate receptor (IP3R). Compared with high fat group, SFN alleviates Ca2+ overload in the mitochondria and suppresses mitochondrial calcium uniporter (MCU). Furthermore, SFN increases mitochondrial DNA quantities and mitochondria membrane potential, while decreasing reactive oxygen species (ROS) production. Finally, SFN increases mitochondria complexes IV content and ATP synthesis. CONCLUSION These results suggest that SFN balances the Ca2+ homeostasis in the MAM through regulating Ca2+ flux by Ca2+ channel IP3R and MCU.
Collapse
Affiliation(s)
- Sicong Tian
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China
| | - Peng Lei
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Jing Zhang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yao Sun
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Baolong Li
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Yujuan Shan
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China
| |
Collapse
|
14
|
Harwood JC, Leonenko G, Sims R, Escott-Price V, Williams J, Holmans P. Defining functional variants associated with Alzheimer's disease in the induced immune response. Brain Commun 2021; 3:fcab083. [PMID: 33959712 PMCID: PMC8087896 DOI: 10.1093/braincomms/fcab083] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
Defining the mechanisms involved in the aetiology of Alzheimer’s disease from genome-wide association studies alone is challenging since Alzheimer’s disease is polygenic and most genetic variants are non-coding. Non-coding Alzheimer’s disease risk variants can influence gene expression by affecting miRNA binding and those located within enhancers and within CTCF sites may influence gene expression through alterations in chromatin states. In addition, their function can be cell-type specific. They can function specifically in microglial enhancers thus affecting gene expression in the brain. Hence, transcriptome-wide association studies have been applied to test the genetic association between disease risk and cell-/tissue-specific gene expression. Many Alzheimer’s disease-associated loci are involved in the pathways of the innate immune system. Both microglia, the primary immune cells of the brain, and monocytes which can infiltrate the brain and differentiate into activated macrophages, have roles in neuroinflammation and β‐amyloid clearance through phagocytosis. In monocytes the function of regulatory variants can be context-specific after immune stimulation. To dissect the variants associated with Alzheimer’s disease in the context of monocytes, we utilized data from naïve monocytes and following immune stimulation in vitro, in combination with genome-wide association studies of Alzheimer’s disease in transcriptome-wide association studies. Of the nine genes with statistically independent transcriptome-wide association signals, seven are located in known Alzheimer’s disease risk loci: BIN1, PTK2B, SPI1, MS4A4A, MS4A6E, APOE and PVR. The transcriptome-wide association signal for MS4A6E, PTK2B and PVR and the direction of effect replicated in an independent genome-wide association studies. Our analysis identified two novel candidate genes for Alzheimer’s disease risk, LACTB2 and PLIN2/ADRP. LACTB2 replicated in a transcriptome-wide association study using independent expression weights. LACTB2 and PLIN2/ADRP are involved in mitochondrial function and lipid metabolism, respectively. Comparison of transcriptome-wide association study results from monocytes, whole blood and brain showed that the signal for PTK2B is specific to blood and MS4A6E is specific to LPS stimulated monocytes.
Collapse
Affiliation(s)
- Janet C Harwood
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| | - Ganna Leonenko
- UK Dementia Research Institute at Cardiff University, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| | - Rebecca Sims
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| | - Valentina Escott-Price
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK.,UK Dementia Research Institute at Cardiff University, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| | - Julie Williams
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK.,UK Dementia Research Institute at Cardiff University, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| | - Peter Holmans
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff CF24 4HQ, UK
| |
Collapse
|
15
|
Du K, Fan Y, Li D. Sulforaphane ameliorates lipid profile in rodents: an updated systematic review and meta-analysis. Sci Rep 2021; 11:7804. [PMID: 33833347 DOI: 10.1038/s41598-021-87367-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 03/23/2021] [Indexed: 12/19/2022] Open
Abstract
Sulforaphane (SFN), a naturally-occurring isothiocyanate enriched in cabbage and broccoli, has been provided as food supplements to improve weight management and reduce lipid levels. However, its effects on serum lipid profiles are contradictory. In this review, a meta-analysis and systematic review of SFN on lipid reduction and weight control is assessed with mice and rats fed on high-fat diet. The effects of SFN supplementation were evaluated by weighted mean difference (WMD) in body weight (BW), liver weight (LW) and also by its effect on serum lipids. A random-effects model was applied to estimate the overall summary effect. SFN reduced BW (WMD: − 2.76 g, 95% CI: − 4.19, − 1.34) and LW (WMD: − 0.93 g, 95% CI: − 1.63, − 0.23) significantly in our ten trials. Its effects on serum total cholesterol (TC) (WMD: − 15.62 mg/dL, 95% CI: − 24.07, − 7.18), low-density lipoprotein cholesterol (LDL-C) (WMD: − 8.35 mg/dL, 95% CI: − 15.47, − 1.24) and triglyceride (TG) (WMD: − 40.85 mg/dL, 95% CI: − 67.46, − 14.24) were significant except for high-density lipoprotein cholesterol (HDL-C) component (WMD: 1.05 mg/dL, 95% CI: − 3.44, 5.54). However, species, disease model, duration, SFN dosage as well as route of administration did not explain the heterogeneity among studies. In summary, these findings provide new insights concerning preclinical strategies for treating diseases including obesity, diabetes, hypertension, non-alcoholic fatty liver disease as well as cardiovascular disease with SFN supplements.
Collapse
|
16
|
Palliyaguru DL, Yang L, Chartoumpekis DV, Wendell SG, Fazzari M, Skoko JJ, Liao Y, Oesterreich S, Michalopoulos GK, Kensler TW. Sulforaphane Diminishes the Formation of Mammary Tumors in Rats Exposed to 17β-Estradiol. Nutrients 2020; 12:nu12082282. [PMID: 32751496 PMCID: PMC7468750 DOI: 10.3390/nu12082282] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/26/2020] [Accepted: 07/28/2020] [Indexed: 12/21/2022] Open
Abstract
Elevated levels of estrogen are a risk factor for breast cancer. In addition to inducing DNA damage, estrogens can enhance cell proliferation as well as modulate fatty acid metabolism that collectively contributes to mammary tumorigenesis. Sulforaphane (SFN) is an isothiocyanate derived from broccoli that is currently under evaluation in multiple clinical trials for prevention of several diseases, including cancer. Previous studies showed that SFN suppressed DNA damage and lipogenesis pathways. Therefore, we hypothesized that administering SFN to animals that are co-exposed to 17β-estradiol (E2) would prevent mammary tumor formation. In our study, 4–6 week old female August Copenhagen Irish rats were implanted with slow-release E2 pellets (3 mg x 3 times) and gavaged 3x/week with either vehicle or 100 μmol/kg SFN for 56 weeks. SFN-treated rats were protected significantly against mammary tumor formation compared to vehicle controls. Mammary glands of SFN-treated rats showed decreased DNA damage while serum free fatty acids and triglyceride species were 1.5 to 2-fold lower in SFN-treated rats. Further characterization also showed that SFN diminished expression of enzymes involved in mammary gland lipogenesis. This study indicated that SFN protects against breast cancer development through multiple potential mechanisms in a clinically relevant hormonal carcinogenesis model.
Collapse
Affiliation(s)
- Dushani L. Palliyaguru
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
- Translational Gerontology Branch, National Institute on Aging, Baltimore, MD 21224, USA
- Correspondence:
| | - Li Yang
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
- Department of Toxic Substances Control, California Environmental Protection Agency, Cypress, CA 90630, USA
| | - Dionysios V. Chartoumpekis
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
- Department of Internal Medicine, Division of Endocrinology, University of Patras, 26504 Patras, Greece
| | - Stacy G. Wendell
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
| | - Marco Fazzari
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
| | - John J. Skoko
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
| | - Yong Liao
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
| | - Steffi Oesterreich
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
- Magee Women’s Research Institute, Pittsburgh, PA 15213, USA
- UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | | | - Thomas W. Kensler
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (L.Y.); (D.V.C.); (S.G.W.); (M.F.); (J.J.S.); (Y.L.); (S.O.); (T.W.K.)
- Translational Research Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| |
Collapse
|