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Singh S, Kumar A, Gupta S, Agrawal R. Curative role of natural PPARγ agonist in non-alcoholic fatty liver disease (NAFLD). Tissue Barriers 2024; 12:2289830. [PMID: 38050958 PMCID: PMC11262216 DOI: 10.1080/21688370.2023.2289830] [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: 09/04/2023] [Accepted: 11/15/2023] [Indexed: 12/07/2023] Open
Abstract
NAFLD is a condition that develops when the liver accumulates excess fat without alcohol consumption. This chronic liver ailment progresses along with insulin resistant and is typically not diagnosed until the patients have cirrhosis. Nuclear hormone receptor superfamily PPARs are essential for metabolism of fatty acids and glucose. In liver, lipid metabolism is regulated by nuclear receptors and PPARα, and PPARβ/δ encourages fatty acid β-oxidation. PPAR-γ, an energy-balanced receptor is a crucial regulator in NAFLD. The partial activation of PPAR-γ could lead to increased level of adiponectin and insulin sensitivity, thus improved NAFLD. Because of less side effects, natural compounds are emerged as potential therapeutic agents for NAFLD by PPARγ agonists. Although the results from preclinical studies are promising, further research is needed to determine the potential dosing and efficacy of mentioned compounds in human subjects. In this review, we summarize the effect of natural PPARγ agonist in the NAFLD.
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Affiliation(s)
- Swati Singh
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
| | - Anit Kumar
- Department of Pharmacology, Divine College of Pharmacy, Bihar, India
| | - Suruchi Gupta
- School of Pharmacy, YBN University, Ranchi, Jharkhand, India
| | - Rohini Agrawal
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
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2
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Chandel SS, Mishra A, Dubey G, Singh RP, Singh M, Agarwal M, Chawra HS, Kukreti N. Unravelling the role of long non-coding RNAs in modulating the Hedgehog pathway in cancer. Pathol Res Pract 2024; 254:155156. [PMID: 38309021 DOI: 10.1016/j.prp.2024.155156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/14/2024] [Accepted: 01/18/2024] [Indexed: 02/05/2024]
Abstract
Cancer is a multifactorial pathological condition characterized by uncontrolled cellular proliferation, genomic instability, and evasion of regulatory mechanisms. It arises from the accumulation of genetic mutations confer selective growth advantages, leading to malignant transformation and tumor formation. The intricate interplay between LncRNAs and the Hedgehog pathway has emerged as a captivating frontier in cancer research. The Hedgehog pathway, known for its fundamental roles in embryonic development and tissue homeostasis, is frequently dysregulated in various cancers, contributing to aberrant cellular proliferation, survival, and differentiation. The Hh pathway is crucial in organizing growth and maturation processes in multicellular organisms. It plays a pivotal role in the initiation of tumors as well as in conferring resistance to conventional therapeutic approaches. The crosstalk among the Hh pathway and lncRNAs affects the expression of Hh signaling components through various transcriptional and post-transcriptional processes. Numerous pathogenic processes, including both non-malignant and malignant illnesses, have been identified to be induced by this interaction. The dysregulation of lncRNAs has been associated with the activation or inhibition of the Hh pathway, making it a potential therapeutic target against tumorigenesis. Insights into the functional significance of LncRNAs in Hedgehog pathway modulation provide promising avenues for diagnostic and therapeutic interventions. The dysregulation of LncRNAs in various cancer types underscores their potential as biomarkers for early detection and prognostication. Additionally, targeting LncRNAs associated with the Hedgehog pathway presents an innovative strategy for developing precision therapeutics to restore pathway homeostasis and impede cancer progression. This review aims to elucidate the complex regulatory network orchestrated by LncRNAs, unravelling their pivotal roles in modulating the Hedgehog pathway and influencing cancer progression.
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Affiliation(s)
| | - Anurag Mishra
- NIMS Institute of Pharmacy, NIMS University Rajasthan, Jaipur, India
| | - Gaurav Dubey
- NIMS Institute of Pharmacy, NIMS University Rajasthan, Jaipur, India
| | | | - Mithilesh Singh
- NIMS Institute of Pharmacy, NIMS University Rajasthan, Jaipur, India
| | - Mohit Agarwal
- NIMS Institute of Pharmacy, NIMS University Rajasthan, Jaipur, India.
| | | | - Neelima Kukreti
- School of Pharmacy, Graphic Era Hill University, Dehradun 248007, India
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3
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Varghese R, Efferth T, Ramamoorthy S. Carotenoids for lung cancer chemoprevention and chemotherapy: Promises and controversies. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 116:154850. [PMID: 37187036 DOI: 10.1016/j.phymed.2023.154850] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Lung cancer is one of the leading causes of malignancy in the world. Several therapeutical and chemopreventive approaches have been practised to mitigate the disease. The use of phytopigments including carotenoids is a well-known approach. However, some of the prominent clinical trials interrogated the efficacy of carotenoids in lung cancer prevention. METHODS A elaborate literature survey have been performed investigating in vitro, in vivo, and clinical studies reported on the administration of carotenoids for chemoprevention and chemotherapy. RESULTS Tobacco consumption, genetic factors, dietary patterns, occupational carcinogens, lung diseases, infection, and sex disparities are some of the prominent factors leading to lung cancer. Significant evidence has been found underlining the efficiency of carotenoids in alleviating cancer. In vitro studies have proven that carotenoids act through PI3K/ AKT/mTOR, ERK-MAPK pathways and induce apoptosis through PPAR, IFNs, RAR, which are p53 intermediators in lung cancer signaling. Animal models and cell lines studies showed promising results, while the outcomes of clinical trials are contradictory and require further verification. CONCLUSION The carotenoids exert chemotherapeutic and chemopreventive effects on lung tumors which has been evidenced in numerous investigations. However, further analyses are necessary to the answer the uncertainties raised by several clinical trials.
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Affiliation(s)
- Ressin Varghese
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute, Technology, Vellore 632014, India
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Siva Ramamoorthy
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute, Technology, Vellore 632014, India.
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Appraisal of the Possible Role of PPAR γ Upregulation by CLA of Probiotic Pediococcus pentosaceus GS4 in Colon Cancer Mitigation. PPAR Res 2023; 2023:9458308. [PMID: 36875279 PMCID: PMC9984262 DOI: 10.1155/2023/9458308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 01/21/2023] [Accepted: 02/02/2023] [Indexed: 03/07/2023] Open
Abstract
The prevalence of colon cancer (CC) is increasing at the endemic scale, which is accompanied by subsequent morbidity and mortality. Although there have been noteworthy achievements in the therapeutic strategies in recent years, the treatment of patients with CC remains a formidable task. The current study focused on to study role of biohydrogenation-derived conjugated linoleic acid (CLA) of probiotic Pediococcus pentosaceus GS4 (CLAGS4) against CC, which induced peroxisome proliferator-activated receptor gamma (PPARγ) expression in human CC HCT-116 cells. Pre-treatment with PPARγ antagonist bisphenol A diglycidyl ether has significantly reduced the inhibitory efficacy of enhanced cell viability of HCT-116 cells, suggesting the PPARγ-dependent cell death. The cancer cells treated with CLA/CLAGS4 demonstrated the reduced level of Prostaglandin E2 PGE2 in association with reduced COX-2 and 5-LOX expressions. Moreover, these consequences were found to be associated with PPARγ-dependent. Furthermore, delineation of mitochondrial dependent apoptosis with the help of molecular docking LigPlot analysis showed that CLA can bind with hexokinase-II (hHK-II) (highly expressed in cancer cells) and that this association underlies voltage dependent anionic channel to open, thereby causing mitochondrial membrane depolarization, a condition that initiates intrinsic apoptotic events. Apoptosis was further confirmed by annexin V staining and elevation of caspase 1p10 expression. Taken all together, it is deduced that, mechanistically, the upregulation of PPARγ by CLAGS4 of P. pentosaceus GS4 can alter cancer cell metabolism in association with triggering apoptosis in CC.
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Behl T, Madaan P, Sehgal A, Singh S, Sharma N, Bhatia S, Al-Harrasi A, Chigurupati S, Alrashdi I, Bungau SG. Elucidating the Neuroprotective Role of PPARs in Parkinson's Disease: A Neoteric and Prospective Target. Int J Mol Sci 2021; 22:10161. [PMID: 34576325 PMCID: PMC8467926 DOI: 10.3390/ijms221810161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/17/2021] [Accepted: 09/19/2021] [Indexed: 12/13/2022] Open
Abstract
One of the utmost frequently emerging neurodegenerative diseases, Parkinson's disease (PD) must be comprehended through the forfeit of dopamine (DA)-generating nerve cells in the substantia nigra pars compacta (SN-PC). The etiology and pathogenesis underlying the emergence of PD is still obscure. However, expanding corroboration encourages the involvement of genetic and environmental factors in the etiology of PD. The destruction of numerous cellular components, namely oxidative stress, ubiquitin-proteasome system (UPS) dysfunction, autophagy-lysosome system dysfunction, neuroinflammation and programmed cell death, and mitochondrial dysfunction partake in the pathogenesis of PD. Present-day pharmacotherapy can alleviate the manifestations, but no therapy has been demonstrated to cease disease progression. Peroxisome proliferator-activated receptors (PPARs) are ligand-directed transcription factors pertaining to the class of nuclear hormone receptors (NHR), and are implicated in the modulation of mitochondrial operation, inflammation, wound healing, redox equilibrium, and metabolism of blood sugar and lipids. Numerous PPAR agonists have been recognized to safeguard nerve cells from oxidative destruction, inflammation, and programmed cell death in PD and other neurodegenerative diseases. Additionally, various investigations suggest that regular administration of PPAR-activating non-steroidal anti-inflammatory drugs (NSAIDs) (ibuprofen, indomethacin), and leukotriene receptor antagonists (montelukast) were related to the de-escalated evolution of neurodegenerative diseases. The present review elucidates the emerging evidence enlightening the neuroprotective outcomes of PPAR agonists in in vivo and in vitro models experiencing PD. Existing articles up to the present were procured through PubMed, MEDLINE, etc., utilizing specific keywords spotlighted in this review. Furthermore, the authors aim to provide insight into the neuroprotective actions of PPAR agonists by outlining the pharmacological mechanism. As a conclusion, PPAR agonists exhibit neuroprotection through modulating the expression of a group of genes implicated in cellular survival pathways, and may be a propitious target in the therapy of incapacitating neurodegenerative diseases like PD.
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Affiliation(s)
- Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (P.M.); (A.S.); (S.S.); (N.S.)
| | - Piyush Madaan
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (P.M.); (A.S.); (S.S.); (N.S.)
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (P.M.); (A.S.); (S.S.); (N.S.)
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (P.M.); (A.S.); (S.S.); (N.S.)
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (P.M.); (A.S.); (S.S.); (N.S.)
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Centre, University of Nizwa, Birkat Al Mauz 616, Nizwa P.O. Box 33, Oman; (S.B.); (A.A.-H.)
- School of Health Science, University of Petroleum and Energy Studies, Dehradun 248007, India
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Centre, University of Nizwa, Birkat Al Mauz 616, Nizwa P.O. Box 33, Oman; (S.B.); (A.A.-H.)
| | - Sridevi Chigurupati
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 52571, Saudi Arabia;
| | - Ibrahim Alrashdi
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne NE1 7RU, UK;
| | - Simona Gabriela Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania
- Doctoral School of Biological and Biomedical Sciences, University of Oradea, 410073 Oradea, Romania
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Jang JH, Lee TJ, Sung EG, Song IH, Kim JY. Pioglitazone mediates apoptosis in Caki cells via downregulating c-FLIP (L) expression and reducing Bcl-2 protein stability. Oncol Lett 2021; 22:743. [PMID: 34466155 PMCID: PMC8387863 DOI: 10.3892/ol.2021.13004] [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: 06/04/2021] [Accepted: 07/28/2021] [Indexed: 12/02/2022] Open
Abstract
Pioglitazone is an anti-diabetic agent used in the treatment of type 2 diabetes, which belongs to the thiazolidinediones (TZDs) group. TZDs target peroxisome proliferator-activated receptor γ (PPARγ), which functions as a transcription factor of the nuclear hormone receptor. Pioglitazone has antitumor effects in several cancer types and could be a tool for drug therapy in various cancer treatments. Nevertheless, the molecular basis for pioglitazone-induced anticancer effects in renal cancer (RC) has not yet been elucidated. Thus, the aim of the present study was to investigate the detailed signaling pathway underlying pioglitazone-induced apoptosis in Caki cells derived from human clear cell renal cell carcinoma. As a result, it was demonstrated by flow cytometry analysis and Annexin V-propidium iodide staining that pioglitazone treatment induced apoptotic cell death in a dose-dependent manner in Caki cells. The protein expression levels of cellular FLICE (FADD-like IL-1β-converting enzyme)-inhibitory protein (c-FLIP)(L) and Bcl-2, which were determined by western blotting, decreased after pioglitazone treatment in Caki cells. Flow cytometry and western blot analyses demonstrated that pioglitazone-mediated apoptosis was blocked following pretreatment with the pan-caspase inhibitor, z-VAD-fmk, indicating that pioglitazone-induced apoptosis was mediated via a caspase-dependent signaling pathway. However, the reactive oxygen species (ROS) scavenger, N-acetylcysteine (NAC), did not affect pioglitazone-mediated apoptosis and degradation of c-FLIP(L) and Bcl-2 protein. Of note, it was found by western blot analysis that Bcl-2 protein expression was downregulated by the decreased protein stability of Bcl-2 in pioglitazone-treated Caki cells. In conclusion, these findings indicated that pioglitazone-induced apoptosis is regulated through caspase-mediated degradation of FLIP(L) and reduction of Bcl-2 protein stability, suggesting that pioglitazone is a feasible apoptotic agent that could be used in the treatment of human RC.
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Affiliation(s)
- Ji Hoon Jang
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
| | - Tae-Jin Lee
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
| | - Eon-Gi Sung
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
| | - In-Hwan Song
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
| | - Joo-Young Kim
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 42415, Republic of Korea
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Xu R, Luo X, Ye X, Li H, Liu H, Du Q, Zhai Q. SIRT1/PGC-1α/PPAR-γ Correlate With Hypoxia-Induced Chemoresistance in Non-Small Cell Lung Cancer. Front Oncol 2021; 11:682762. [PMID: 34381712 PMCID: PMC8351465 DOI: 10.3389/fonc.2021.682762] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/30/2021] [Indexed: 12/18/2022] Open
Abstract
Resistance is the major cause of treatment failure and disease progression in non-small cell lung cancer (NSCLC). There is evidence that hypoxia is a key microenvironmental stress associated with resistance to cisplatin, epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs), and immunotherapy in solid NSCLCs. Numerous studies have contributed to delineating the mechanisms underlying drug resistance in NSCLC; nevertheless, the mechanisms involved in the resistance associated with hypoxia-induced molecular metabolic adaptations in the microenvironment of NSCLC remain unclear. Studies have highlighted the importance of posttranslational regulation of molecular mediators in the control of mitochondrial function in response to hypoxia-induced metabolic adaptations. Hypoxia can upregulate the expression of sirtuin 1 (SIRT1) in a hypoxia-inducible factor (HIF)-dependent manner. SIRT1 is a stress-dependent metabolic sensor that can deacetylate some key transcriptional factors in both metabolism dependent and independent metabolic pathways such as HIF-1α, peroxisome proliferator-activated receptor gamma (PPAR-γ), and PPAR-gamma coactivator 1-alpha (PGC-1α) to affect mitochondrial function and biogenesis, which has a role in hypoxia-induced chemoresistance in NSCLC. Moreover, SIRT1 and HIF-1α can regulate both innate and adaptive immune responses through metabolism-dependent and -independent ways. The objective of this review is to delineate a possible SIRT1/PGC-1α/PPAR-γ signaling-related molecular metabolic mechanism underlying hypoxia-induced chemotherapy resistance in the NSCLC microenvironment. Targeting hypoxia-related metabolic adaptation may be an attractive therapeutic strategy for overcoming chemoresistance in NSCLC.
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Affiliation(s)
- Rui Xu
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Minhang Branch, Shanghai, China
| | - Xin Luo
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xuan Ye
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Huan Li
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hongyue Liu
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qiong Du
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Minhang Branch, Shanghai, China.,Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qing Zhai
- Department of Pharmacy, Fudan University Shanghai Cancer Center, Minhang Branch, Shanghai, China.,Department of Pharmacy, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Cytoplasmic Localization of RXRα Determines Outcome in Breast Cancer. Cancers (Basel) 2021; 13:cancers13153756. [PMID: 34359656 PMCID: PMC8345077 DOI: 10.3390/cancers13153756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Considering the immense development of today’s therapeutic approaches in oncology towards customized therapy, this study aimed to assess the prognostic value of nuclear versus cytoplasmic retinoid X receptor α (RXRα) expression in breast cancer. Our results demonstrate that RXRα expression may have different roles in tumorigenesis according to its subcellular localization. This study strengthens the need for further research on the behavior of RXRα, depending on its intracellular localization. Abstract The aim of this retrospective study was to assess the prognostic value of cytoplasmic versus nuclear RXRα expression in breast cancer (BC) tissue samples and to correlate the results with clinicopathological parameters. In 319 BC patients, the expression of RXRα was evaluated via immunohistochemistry. Prognosis-determining aspects were calculated through uni- and multivariate analyses. Correlation analysis revealed a trend association with nuclear RXRα expression regarding an improved overall survival (OS) (p = 0.078), whereas cytoplasmic RXRα expression was significantly correlated with a poor outcomes in terms of both OS (p = 0.038) and disease-free survival (DFS) (p = 0.037). Strengthening these results, cytoplasmic RXRα was found to be an independent marker for DFS (p = 0.023), when adjusted to clinicopathological parameters, whereas nuclear RXRα expression was positively associated with lower TNM-staging, i.e., pT (p = 0.01), pN (p = 0.029) and pM (p = 0.001). Additionally, cytoplasmic RXRα expression was positively associated with a higher histopathological tumor grading (p = 0.02). Cytoplasmic RXRα was also found to be a negative prognosticator for Her-2neu-negative and triple-negative patients. Altogether, these findings support the hypothesis that the subcellular localization of RXRα plays an important role in carcinogenesis and the prognosis of BC. The expression of cytoplasmic RXRα is correlated with a more aggressive course of the disease, whereas nuclear RXRα expression appears to be a protective factor. These data may help to identify high-risk BC subgroups in order to find possible specific options in targeted tumor therapy.
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Magnolia officinalis Ameliorates Dehydroepiandrosterone-Induced Polycystic Ovary Syndrome in Rats. Jundishapur J Nat Pharm Prod 2021. [DOI: 10.5812/jjnpp.106447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Polycystic ovary syndrome (PCOS) is a prevalent reproductive and metabolic disorder. Insulin resistance (IR) is highly associated with PCOS and aggravates its symptoms. Thiazolidinediones (TZDs), as insulin sensitizing agents, are PPARγ agonists that improve many of the symptoms of PCOS. The Magnolia officinalis extract (MOE) is a natural peroxisome proliferator activated receptor gamma (PPARγ) agonist that improves insulin sensitivity in experimental models. Objectives: Using a dehydroepiandrosterone (DHEA)-induced rat model of PCOS and IR, this study aimed to explore both the potential beneficial effects and the molecular mechanisms of action of MOE. Methods: Post-pubertal female Sprague Dawley rats were subcutaneously injected daily with DHEA (6 mg/100 g body weight) dissolved in sesame oil for 28 days (n = 30). Age- and weight-matched control rats received only sesame oil (n = 12). Afterward, 16 of the DHEA-injected rats, along with five control rats, were sacrificed for blood and tissue collection. The 14 remaining DHEA-injected rats received either treatment of 30 days of oral MOE (500 mg/kg) dissolved in dimethyl sulfoxide (DMSO) (n = 7), or oral DMSO only (n = 7). Meanwhile, the remaining control rats (n = 7) continued to receive daily oral DMSO for 30 days. At the end of the treatments, the rats were sacrificed for blood and tissue collection. Results: After 28 days, the DHEA-treated rats exhibited an increase in body weight as compared to controls (P < 0.05). DHEA injection induced a PCOS phenotype as evident by a statistically significant (P < 0.05) elevated serum luteinizing hormone (LH), and an increased number of cystically dilated follicles with thicker granulosa compared to controls. PCOS rats showed a statistically significant rise in fasting insulin with an increased homeostatic model assessment index of insulin resistance (HOMA-IR) as compared to controls (P < 0.05). Compared to the control group, PCOS rats had a statistically significant lower ovarian protein expression of PPARγ, insulin receptor substrate 1 (IRS1), and protein kinase B (Akt) by Western Blot (P < 0.05). Conversely, the PCOS group showed an increased mammalian target of rapamycin (mTOR) pathway activity as evident by an increase in the fraction of phosphorylated mTOR to total mTOR compared to the control group (P < 0.05). When treated for 30 days with oral MOE (500 mg/kg), the PCOS rats showed a statistically significant decrease in body weight and serum LH levels as compared to the non-treated PCOS rats (P < 0.05). The number of cystically dilated follicles in the MOE-treated PCOS rats was significantly reduced compared to the non-treated PCOS rats. In the MOE-treated PCOS rats, the ovarian protein expression of PPARγ, IRS1, and Akt was significantly increased, while the p-mTOR/mTOR expression was decreased compared to the non-treated PCOS group (P < 0.05). Conclusions: According to our results, the MOE ameliorated the DHEA-induced PCOS phenotype histologically, hormonally, and metabolically. Fundamentally, this explores the elusive pathophysiologic association between IR and PCOS by targeting pathways common to both disorders.
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Peroxisome Proliferator-Activated Receptor Gamma Pro12Ala/C161T Genotypes and Risky Haplotype Altering Risk of Breast Cancer: A Turkish Case-Control Study. Biochem Genet 2021; 59:1413-1426. [PMID: 33893920 DOI: 10.1007/s10528-021-10068-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 04/06/2021] [Indexed: 01/26/2023]
Abstract
Breast cancer (BC) has a high incidence rate among women worldwide, and the mechanisms and etiology of this disease are not yet fully understood. The peroxisome proliferator-activated receptor gamma (PPARgamma), a nuclear hormone receptor that plays important roles in energy metabolism and cellular differentiation, is also suggested to be effective in cancer development. However, the results of studies investigating the cancer association with PPARgamma are inconsistent, creating a need for further investigation of the effects of this transcription factor on BC risk. We have examined the Pro12Ala-(rs1801282) and C161T-(rs3856806) polymorphisms of the PPARgamma gene in Turkish patients with BC in this case-control study. A total of 95 women diagnosed with BC as cases and 119 controls were genotyped for PPARgamma polymorphisms by polymerase chain reaction and restriction fragment length polymorphism techniques. The ProPro genotype and T161 allele were associated with an increased risk of BC comparing with the Ala12 allele and CC161 genotype, respectively (p < 0.001). The multivariate regression analysis confirmed that the ProPro genotype (p < 0.011), T161 allele (p < 0.001), smoking (p = 0.019), and advanced age (> 60 years) (p = 0.007) are risk factors for breast cancer. We also found that the PPARgamma Pro12Ala and C161T polymorphisms were in linkage disequilibrium (D':0.511, r2:0.099). It was determined that carrying ProPro-T161 risky PPARgamma haplotype was associated with a higher risk of BC compared to protective Ala12-CC161 haplotype (p < 0.01, OR:7.797, 95% CI:3.521-17.263). We concluded that PPARgamma Pro12Ala and C161T polymorphisms are associated with increased BC risk, and ProPro-T161 risky haplotype, which is in linkage disequilibrium, increases this effect.
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Zehni AZ, Batz F, Vattai A, Kaltofen T, Schrader S, Jacob SN, Mumm JN, Heidegger HH, Ditsch N, Mahner S, Jeschke U, Vilsmaier T. The Prognostic Impact of Retinoid X Receptor and Thyroid Hormone Receptor alpha in Unifocal vs. Multifocal/Multicentric Breast Cancer. Int J Mol Sci 2021; 22:957. [PMID: 33478016 PMCID: PMC7835829 DOI: 10.3390/ijms22020957] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 12/24/2022] Open
Abstract
The aim of this study was to assess the prognostic value of the steroid hormone receptor expression, counting the retinoid X receptor (RXR) and thyroid hormone receptors (THRs), on the two different breast cancer (BC) entities: multifocal/multicentric versus unifocal. The overall and disease-free survival were considered as the prognosis determining aspects and analyzed by uni- and multi-variate analysis. Furthermore, histopathological grading and TNM staging (T = tumor size, N = lymph node involvement, M = distant metastasis) were examined in relation to RXR and THRs expression. A retrospective statistical analysis was carried out on survival-related events in a series of 319 sporadic BC patients treated at the Department of Gynecology and Obstetrics at the Ludwig-Maximillian's University in Munich between 2000 and 2002. The expression of RXR and THRs, including its two major isoforms THRα1 and THRα2, was analyzed by immunohistochemistry and showed to have a significant correlation for both BC entities in regard to survival analysis. Patients with multifocal/multicentric BC were exposed to a significantly worse disease-free survival (DFS) when expressing RXR. Patients with unifocal BC showed a significantly worse DFS when expressing THRα1. In contrast, a statistically significant positive association between THRα2 expression and enhanced DFS in multifocal/multicentric BC was shown. Especially the RXR expression in multifocal/multicentric BC was found to play a remarkably contradictory role for BC prognosis. The findings imply the need for a critical review of possible molecular therapies targeting steroid hormone receptors in BC treatment. Our results strengthen the need to further investigate the behavior of the nuclear receptor family, especially in relation to BC focality.
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Affiliation(s)
- Alaleh Zati Zehni
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Falk Batz
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Aurelia Vattai
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Till Kaltofen
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Svenja Schrader
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Sven-Niclas Jacob
- Department of General, Visceral, Transplant, Vascular and Thoracic Surgery, LMU, Marchioninistraße 15, 81377 Munich, Germany;
| | - Jan-Niclas Mumm
- Department of Urology, LMU, Marchioninistraße 15, 81377 Munich, Germany;
| | - Helene Hildegard Heidegger
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Nina Ditsch
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
- Department of Obstetrics and Gynecology, University Hospital, 86156 Augsburg, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
- Department of Obstetrics and Gynecology, University Hospital, 86156 Augsburg, Germany
| | - Theresa Vilsmaier
- Department of Obstetrics and Gynecology, University Hospital Munich, LMU, 80337 Munich, Germany; (A.Z.Z.); (F.B.); (A.V.); (T.K.); (S.S.); (H.H.H.); (N.D.); (S.M.); (T.V.)
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12
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Shafi S, Gupta P, Khatik GL, Gupta J. PPARγ: Potential Therapeutic Target for Ailments Beyond Diabetes and its Natural Agonism. Curr Drug Targets 2020; 20:1281-1294. [PMID: 31131751 DOI: 10.2174/1389450120666190527115538] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 02/07/2023]
Abstract
Intense research interests have been observed in establishing PPAR gamma as a therapeutic target for diabetes. However, PPARγ is also emerging as an important therapeutic target for varied disease states other than type 2 diabetes like neurodegenerative disorders, cancer, spinal cord injury, asthma, and cardiovascular problems. Furthermore, glitazones, the synthetic thiazolidinediones, also known as insulin sensitizers, are the largely studied PPARγ agonists and the only ones approved for the treatment of type 2 diabetes. However, they are loaded with side effects like fluid retention, obesity, hepatic failure, bone fractures, and cardiac failure; which restrict their clinical application. Medicinal plants used traditionally are the sources of bioactive compounds to be used for the development of successful drugs and many structurally diverse natural molecules are already established as PPARγ agonists. These natural partial agonists when compared to full agonist synthetic thiazolidinediones led to weaker PPARγ activation with lesser side effects but are not thoroughly investigated. Their thorough characterization and elucidation of mechanistic activity might prove beneficial for counteracting diseases by modulating PPARγ activity through dietary changes. We aim to review the therapeutic significance of PPARγ for ailments other than diabetes and highlight natural molecules with potential PPARγ agonistic activity.
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Affiliation(s)
- Sana Shafi
- School of Bioengineering and Biosciences, Lovely Professional University (LPU), Phagwara, Punjab - 144411, India
| | - Pawan Gupta
- School of Pharmaceutical Sciences, Lovely Professional University (LPU), Phagwara, Punjab - 144411, India.,Department of Research and Development, Lovely Professional University (LPU), Phagwara, Punjab - 144411, India
| | - Gopal Lal Khatik
- School of Pharmaceutical Sciences, Lovely Professional University (LPU), Phagwara, Punjab - 144411, India
| | - Jeena Gupta
- School of Bioengineering and Biosciences, Lovely Professional University (LPU), Phagwara, Punjab - 144411, India
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13
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The Release of Adipose Stromal Cells from Subcutaneous Adipose Tissue Regulates Ectopic Intramuscular Adipocyte Deposition. Cell Rep 2020; 27:323-333.e5. [PMID: 30970240 DOI: 10.1016/j.celrep.2019.03.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 12/30/2018] [Accepted: 03/11/2019] [Indexed: 02/01/2023] Open
Abstract
Ectopic lipid deposition (ELD) is defined by excess fat storage in locations not classically associated with adipose tissue (AT) storage. ELD is positively correlated with insulin resistance and increased risk of metabolic disorders. ELD appears as lipid droplets or adipocytes, whose cell origin is unknown. We previously showed that subcutaneous AT (ScAT) releases adipocyte progenitors into the circulation. Here, we demonstrate that triggering or preventing the release of adipocyte precursors from ScAT directly promoted or limited ectopic adipocyte formation in skeletal muscle in mice. Importantly, obesity-associated metabolic disorders could be mimicked by causing adipocyte precursor release without a high-fat diet. Finally, during nutrient overload, adipocyte progenitors exited ScAT, where their retention signals (CXCR4/CXCL12 axis) were greatly decreased, and further infiltrated skeletal muscles. These data provide insights into the formation of ELD associated with calorie overload and highlight adipocyte progenitor trafficking as a potential target in the treatment of metabolic diseases.
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14
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Perri AM, Agosti V, Olivo E, Concolino A, Angelis MD, Tammè L, Fiumara CV, Cuda G, Scumaci D. Histone proteomics reveals novel post-translational modifications in breast cancer. Aging (Albany NY) 2019; 11:11722-11755. [PMID: 31816600 PMCID: PMC6932915 DOI: 10.18632/aging.102577] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 11/26/2019] [Indexed: 04/28/2023]
Abstract
Histones and their variants are subjected to several post-translational modifications (PTMs). Histones PTMs play an important role in the regulation of gene expression and are critical for the development and progression of many types of cancer, including breast cancer. In this study, we used two-dimensional TAU/SDS electrophoresis, coupled with mass spectrometry for a comprehensive profiling of histone PTMs in breast cancer cell lines.Proteomic approach allowed us to identify 85 histone PTMs, seventeen of which are not reported in the UniProt database. Western blot analysis was performed to confirm a peculiar pattern of PTMs in the sporadic and hereditary breast cancer cell lines compared to normal cells. Overlapping mass spectrometry data with western blotting results, we identified, for the first time to our knowledge, a tyrosine phosphorylation on histone H1, which is significantly higher in breast cancer cells. Additionally, by inhibiting specific signaling paths, such as PI3K, PPARγ and FAK pathways, we established a correlation between their regulation and the presence of new histone PTMs. Our results may provide new insight on the possible implication of these modifications in breast cancer and may offer new perspectives for future clinical applications.
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Affiliation(s)
- Angela Mena Perri
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Valter Agosti
- Laboratory of Molecular Oncology, Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy, CIS for Genomics and Molecular Pathology, Magna Graecia University, Catanzaro, Italy
| | - Erika Olivo
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Antonio Concolino
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - MariaTeresa De Angelis
- Stem Cell Laboratory, Research Center of Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine University “Magna Graecia” of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Laura Tammè
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Claudia Vincenza Fiumara
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Giovanni Cuda
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
| | - Domenica Scumaci
- Laboratory of Proteomics, Research Center on Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Græcia University of Catanzaro, Salvatore Venuta University Campus, Catanzaro, Italy
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15
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Ghosh MK, Chakraborty D, Sarkar S, Bhowmik A, Basu M. The interrelationship between cerebral ischemic stroke and glioma: a comprehensive study of recent reports. Signal Transduct Target Ther 2019; 4:42. [PMID: 31637020 PMCID: PMC6799849 DOI: 10.1038/s41392-019-0075-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 12/16/2022] Open
Abstract
Glioma and cerebral ischemic stroke are two major events that lead to patient death worldwide. Although these conditions have different physiological incidences, ~10% of ischemic stroke patients develop cerebral cancer, especially glioma, in the postischemic stages. Additionally, the high proliferation, venous thrombosis and hypercoagulability of the glioma mass increase the significant risk of thromboembolism, including ischemic stroke. Surprisingly, these events share several common pathways, viz. hypoxia, cerebral inflammation, angiogenesis, etc., but the proper mechanism behind this co-occurrence has yet to be discovered. The hypercoagulability and presence of the D-dimer level in stroke are different in cancer patients than in the noncancerous population. Other factors such as atherosclerosis and coagulopathy involved in the pathogenesis of stroke are partially responsible for cancer, and the reverse is also partially true. Based on clinical and neurosurgical experience, the neuronal structures and functions in the brain and spine are observed to change after a progressive attack of ischemia that leads to hypoxia and atrophy. The major population of cancer cells cannot survive in an adverse ischemic environment that excludes cancer stem cells (CSCs). Cancer cells in stroke patients have already metastasized, but early-stage cancer patients also suffer stroke for multiple reasons. Therefore, stroke is an early manifestation of cancer. Stroke and cancer share many factors that result in an increased risk of stroke in cancer patients, and vice-versa. The intricate mechanisms for stroke with and without cancer are different. This review summarizes the current clinical reports, pathophysiology, probable causes of co-occurrence, prognoses, and treatment possibilities.
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Affiliation(s)
- Mrinal K. Ghosh
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Kolkata 700032 and CN-06, Sector-V, Salt Lake, Kolkata, 700091 India
| | - Dipankar Chakraborty
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Kolkata 700032 and CN-06, Sector-V, Salt Lake, Kolkata, 700091 India
| | - Sibani Sarkar
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Kolkata 700032 and CN-06, Sector-V, Salt Lake, Kolkata, 700091 India
| | - Arijit Bhowmik
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata, 700 026 India
| | - Malini Basu
- Department of Microbiology, Dhruba Chand Halder College, Dakshin Barasat, South 24, Paraganas, 743372 India
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16
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Ravichandran R, Viswanathan S, Berlin Grace VM, Bonati L, Narayanan J. Ameliorating effect of lipo-ATRA treatment on the expression of TIG3 and its suppressing effect on PPARγ gene expression in lung cancer animal model. Mol Cell Biochem 2019; 460:105-112. [PMID: 31300983 DOI: 10.1007/s11010-019-03574-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/21/2019] [Indexed: 10/26/2022]
Abstract
This study aimed to find out the molecular therapeutic effect of lipo-ATRA on tumour suppressor TIG3 and cell proliferative biomarker PPARγ in B (a) P-induced lung cancer model. In RT-PCR study, ATRA- and lipo-ATRA-treated mice samples showed relatively higher TIG3 expression and decreased PPARγ expression (Band density) than cancer control. Among treatments, lipo-ATRA showed vital effect than free ATRA by enhancing TIG3 and decreasing PPARγ. The qPCR results also showed significant (p ≤ 0.05) difference in both TIG3 and PPAR (RQ values of TIG3, lipo-ATRA 23.85 ± 1.29; free ATRA 10.43 ± 1.81 and for PPARγ, lipo-ATRA 4.707 ± 1.21; free ATRA 15.78 ± 2.34). From this, we conclude that liposomal ATRA formulation is most preferable for prolonged delivery of ATRA at targeted site to favour molecular action. It implies that the therapeutic effect of lipo-ATRA in lung cancer was exhibited by ameliorating the TIG3 expression and by suppressing the expression of PPARγ.
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Affiliation(s)
- Ragavi Ravichandran
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore, Tamilnadu, 641114, India
| | - S Viswanathan
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore, Tamilnadu, 641114, India
| | - V M Berlin Grace
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore, Tamilnadu, 641114, India.
| | - Lucia Bonati
- Biotechnology, ETH Zurich, Hebelstrasse, 17, 4056, Basel, Switzerland
| | - Jini Narayanan
- Department of Biotechnology, Sugarcane Breeding Institute, Coimbatore, Tamil Nadu, 641007, India
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17
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Olsen RS, Dimberg J, Geffers R, Wågsäter D. Possible Role and Therapeutic Target of PDGF-D Signalling in Colorectal Cancer. Cancer Invest 2019; 37:99-112. [PMID: 30836770 DOI: 10.1080/07357907.2019.1576191] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Platelet-derived growth factor D (PDGF-D) has been shown to mediate cellular processes of importance in cancer progression. This study aimed to investigate the expression and putative involvement of PDGF-D signaling in colorectal carcinogenesis. PDGF-D was expressed in vascular endothelial cells in tumor and normal tissues. PDGF-D stimulation of cells altered genes of importance in carcinogenic processes. In addition, PDGF-D increased the proliferation rate while imatinib inhibited these effects. PDGF-D and its PDGF receptor beta (PDGFR-β) are expressed in colorectal cancer and blockage of PDGF-D/PDGFR-β signaling using tyrosine kinase inhibitors, such as imatinib, might be important in inhibiting tumor-promoting actions.
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Affiliation(s)
- Renate Slind Olsen
- a Department of Laboratory Medicine, Division of Medical Diagnostics , Region Jönköping County , Jönköping , Sweden.,b Division of Drug Research, Department of Medicine and Health Sciences, Faculty of Medicine and Health Sciences , Linköping University , Linköping , Sweden
| | - Jan Dimberg
- c Department of Natural Science and Biomedicine, School of Health and Welfare , Jönköping University , Jönköping , Sweden
| | - Robert Geffers
- d Genome Analytics, Helmholtz Centre for Infection Research , Braunschweig , Germany
| | - Dick Wågsäter
- b Division of Drug Research, Department of Medicine and Health Sciences, Faculty of Medicine and Health Sciences , Linköping University , Linköping , Sweden
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18
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The E3 ubiquitin ligase TRIM25 regulates adipocyte differentiation via proteasome-mediated degradation of PPARγ. Exp Mol Med 2018; 50:1-11. [PMID: 30323259 PMCID: PMC6189217 DOI: 10.1038/s12276-018-0162-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/29/2018] [Accepted: 07/04/2018] [Indexed: 01/04/2023] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ) is a ligand-dependent transcription factor that regulates adipocyte differentiation and glucose homeostasis. The transcriptional activity of PPARγ is regulated not only by ligands but also by post-translational modifications (PTMs). In this study, we demonstrate that a novel E3 ligase of PPARγ, tripartite motif-containing 25 (TRIM25), directly induced the ubiquitination of PPARγ, leading to its proteasome-dependent degradation. During adipocyte differentiation, both TRIM25 mRNA and protein expression significantly decreased and negatively correlated with the expression of PPARγ. The stable expression of TRIM25 reduced PPARγ protein levels and suppressed adipocyte differentiation in 3T3-L1 cells. In contrast, the specific knockdown of TRIM25 increased PPARγ protein levels and stimulated adipocyte differentiation. Furthermore, TRIM25-knockout mouse embryonic fibroblasts (MEFs) exhibited an increased adipocyte differentiation capability compared with wild-type MEFs. Taken together, these data indicate that TRIM25 is a novel E3 ubiquitin ligase of PPARγ and that TRIM25 is a novel target for PPARγ-associated metabolic diseases.
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19
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Rovito D, Gionfriddo G, Barone I, Giordano C, Grande F, De Amicis F, Lanzino M, Catalano S, Andò S, Bonofiglio D. Ligand-activated PPARγ downregulates CXCR4 gene expression through a novel identified PPAR response element and inhibits breast cancer progression. Oncotarget 2018; 7:65109-65124. [PMID: 27556298 PMCID: PMC5323141 DOI: 10.18632/oncotarget.11371] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/11/2016] [Indexed: 12/26/2022] Open
Abstract
Stromal Derived Factor-1α (SDF-1α) and its cognate receptor CXCR4 play a key role in mediating breast cancer cell invasion and metastasis. Therefore, drugs able to inhibit CXCR4 activation may add critical tools to reduce tumor progression, especially in the most aggressive form of the breast cancer disease. Peroxisome Proliferator-Activated Receptor (PPAR) γ, a member of the nuclear receptor superfamily, has been found to downregulate CXCR4 gene expression in different cancer cells, however the molecular mechanism underlying this effect is not fully understood. Here, we identified a novel PPARγ-mediated mechanism that negatively regulates CXCR4 expression in both epithelial and stromal breast cancer cells. We found that ligand-activated PPARγ downregulated CXCR4 transcriptional activity through the recruitment of the silencing mediator of retinoid and thyroid hormone receptor (SMRT) corepressor onto a newly identified PPAR response element (PPRE) within the CXCR4 promoter in breast cancer cell lines. As a consequence, the PPARγ agonist rosiglitazone (BRL) significantly inhibited cell migration and invasion and this effect was PPARγ-mediated, since it was reversed in the presence of the PPARγ antagonist GW9662. According to the ability of cancer-associated fibroblasts (CAFs), the most abundant component of breast cancer stroma, to secrete high levels of SDF-1α, BRL reduced migratory promoting activities induced by conditioned media (CM) derived from CAFs and affected CXCR4 downstream signaling pathways activated by CAF-CM. In addition, CAFs exposed to BRL showed a decreased expression of CXCR4, a reduced motility and invasion along with a phenotype characterized by an altered morphology. Collectively, our findings provide novel insights into the role of PPARγ in inhibiting breast cancer progression and further highlight the utility of PPARγ ligands for future therapies aimed at targeting both cancer and surrounding stromal cells in breast cancer patients.
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Affiliation(s)
- Daniela Rovito
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy.,Centro Sanitario, University of Calabria, Rende (CS), Italy
| | - Giulia Gionfriddo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | - Ines Barone
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | | | - Fedora Grande
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | - Francesca De Amicis
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | - Marilena Lanzino
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | - Stefania Catalano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
| | - Sebastiano Andò
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy.,Centro Sanitario, University of Calabria, Rende (CS), Italy
| | - Daniela Bonofiglio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende (CS), Italy
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20
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Targeting Peroxisome Proliferator-Activated Receptors Using Thiazolidinediones: Strategy for Design of Novel Antidiabetic Drugs. INTERNATIONAL JOURNAL OF MEDICINAL CHEMISTRY 2017; 2017:1069718. [PMID: 28656106 PMCID: PMC5474549 DOI: 10.1155/2017/1069718] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/23/2017] [Accepted: 05/07/2017] [Indexed: 11/18/2022]
Abstract
Thiazolidinediones are a class of well-established antidiabetic drugs, also named as glitazones. Thiazolidinedione structure has been an important structural domain of research, involving design and development of new drugs for the treatment of type 2 diabetes. Extensive research on the mechanism of action and the structural requirements has revealed that the intended antidiabetic activity in type 2 diabetes is due to their agonistic effect on peroxisome proliferator-activated receptor (PPAR) belonging to the nuclear receptor super family. Glitazones have specific affinity to PPARγ, one of the subtypes of PPARs. Certain compounds under development have dual PPARα/γ agonistic activity which might be beneficial in obesity and diabetic cardiomyopathy. Interesting array of hybrid compounds of thiazolidinedione PPARγ agonists exhibited therapeutic potential beyond antidiabetic activity. Pharmacology and chemistry of thiazolidinediones as PPARγ agonists and the potential of newer analogues as dual agonists of PPARs and other emerging targets for the therapy of type 2 diabetes are presented. This review highlights the possible modifications of the structural components in the general frame work of thiazolidinediones with respect to their binding efficacy, potency, and selectivity which would guide the future research in design of novel thiazolidinedione derivatives for the management of type 2 diabetes.
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21
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Sun F, Yang X, Jin Y, Chen L, Wang L, Shi M, Zhan C, Shi Y, Wang Q. Bioinformatics analyses of the differences between lung adenocarcinoma and squamous cell carcinoma using The Cancer Genome Atlas expression data. Mol Med Rep 2017; 16:609-616. [PMID: 28560415 PMCID: PMC5482124 DOI: 10.3892/mmr.2017.6629] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 03/20/2017] [Indexed: 12/16/2022] Open
Abstract
The present study aimed to explore gene and microRNA (miRNA) expression differences between lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC). Differentially expressed genes (DEGs) and differentially expressed miRNAs (DEMs) were identified by analyzing mRNA and miRNA expression data in normal and cancerous lung tissues that were obtained from The Cancer Genome Atlas database. A total of 778 DEGs and 7 DEMs were identified. Altered gene functions and signaling pathways were investigated using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses, which revealed that DEGs were significantly enriched in extracellular matrix organization, cell differentiation, negative regulation of toll signaling pathway, and several other terms and pathways. Transcription factor (TF)-miRNA-gene networks in LUAD and LUSC were predicted using the TargetScan, Miranda, and TRANSFAC databases, which revealed the regulatory links among the TFs, DEMs, and DEGs. The central TFs, i.e., the TFs in the middle of the TF-miRNA-gene network, of LUAD and LUSC were similar. Although LUAD and LUSC shared similar miRNAs in the predicted networks, miR-29b-3p was demonstrated to be upregulated only in LUAD, whereas miR-1, miR-105-5p, and miR-193b-5p were altered in LUSC. These findings may improve our understanding of the different molecular mechanisms in non-small cell lung cancers and may promote new and accurate strategies for prevention, diagnosis, and treatment.
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Affiliation(s)
- Fenghao Sun
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Xiaodong Yang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Yulin Jin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Li Chen
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Lin Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Mengkun Shi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Yu Shi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
| | - Qun Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Xuhui, Shanghai 200032, P.R. China
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22
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Wei G, Xu Y, Peng T, Yan J, Wang Z, Sun Z. Sanguinarine exhibits antitumor activity via up-regulation of Fas-associated factor 1 in non-small cell lung cancer. J Biochem Mol Toxicol 2017; 31. [PMID: 28296008 DOI: 10.1002/jbt.21914] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/06/2017] [Accepted: 02/09/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Guangxia Wei
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
| | - Yahuan Xu
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
| | - Tao Peng
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
| | - Jie Yan
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
| | - Zhengjun Wang
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
| | - Zhanwen Sun
- Department of Cardiothoracic Surgery, Huangshi Central Hospital; Affiliated Hospital of Hubei Polytechnic University; Edong Healthcare Group Huangshi 435000 People's Republic of China
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Chagas MBO, Cordeiro NCC, Marques KMR, Rocha Pitta MG, Rêgo MJBM, Lima MCA, Pitta MGR, Pitta IR. New thiazacridine agents: Synthesis, physical and chemical characterization, and in vitro anticancer evaluation. Hum Exp Toxicol 2016; 36:1059-1070. [DOI: 10.1177/0960327116680274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of new thiazacridine agents were synthesized and evaluated as antitumor agents, in terms of not only their cytotoxicity but also their selectivity. The cytotoxicity assay confirmed that all compounds showed cytotoxic activity and selectivity. The new compound, 3-acridin-9-ylmethyl-5-(5-bromo-1 H-indol-3-ylmethylene)-thiazolidine-2,4-dione (LPSF/AA29 – 7a), proved to be the most promising compound as it presents lower half-maximal inhibitory concentration (IC50) values (ranging from 0.25 to 68.03 µM) depending on cell lineage. In HepG2 cells, the lowest IC50 value was exhibited by 3-acridin-9-ylmethyl-5-(4-piperidin-1-yl-benzylidene)-thiazolidine-2,4-dione (LPSF/AA36 – 7b; 46.95 µM). None of the synthesized compounds showed cytotoxic activity against normal cells (IC50 > 100 µM). The mechanism of death induction and cell cycle effects was also evaluated. Flow cytometric analysis revealed that the compounds LPSF/AA29 – 7a and LPSF/AA36 – 7b significantly increased the percentage of apoptotic cells and induced G2/M arrest in the cell cycle progression. Therefore, these new thiazacridine derivatives constitute promising antitumor agents whose cytotoxicity and selectivity properties indicate they have potential to contribute to or serve as a basis for the development of new cancer drugs in the future.
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Affiliation(s)
- MBO Chagas
- Laboratory for Immunomodulation and New Therapeutic Approaches, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - NCC Cordeiro
- Laboratory for Planning and Drug Synthesis, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - KMR Marques
- Laboratory for Immunomodulation and New Therapeutic Approaches, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - MG Rocha Pitta
- Laboratory for Planning and Drug Synthesis, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - MJBM Rêgo
- Laboratory for Immunomodulation and New Therapeutic Approaches, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - MCA Lima
- Laboratory for Planning and Drug Synthesis, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - MGR Pitta
- Laboratory for Immunomodulation and New Therapeutic Approaches, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - IR Pitta
- Laboratory for Immunomodulation and New Therapeutic Approaches, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
- Laboratory for Planning and Drug Synthesis, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
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Park H, Ko SH, Lee JM, Park JH, Choi YH. Troglitazone Enhances the Apoptotic Response of DLD-1 Colon Cancer Cells to Photodynamic Therapy. Yonsei Med J 2016; 57:1494-9. [PMID: 27593880 PMCID: PMC5011284 DOI: 10.3349/ymj.2016.57.6.1494] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/05/2016] [Accepted: 04/13/2016] [Indexed: 11/27/2022] Open
Abstract
PURPOSE The aim of this study was to investigate whether the peroxisomal proliferator-activated receptor gamma (PPARγ) ligand troglitazone in combination with photodynamic therapy (PDT) enhances the apoptotic response of DLD-1 colon cancer cells. MATERIALS AND METHODS The effects of troglitazone, PDT, and troglitazone in combination with PDT on cell viability and apoptosis were assessed in DLD-1 cells. Cell viability and proliferation were evaluated using the tetrazolium-based MTT assay, and apoptosis was evaluated via cell staining with propidium iodide (PI) and annexin V-FITC. The levels of pro-caspase-3 were measured via Western blot analyses. RESULTS Treatment of troglitazone and PDT induced the growth retardation and cell death of DLD-1 cells in a dose-dependent manner, respectively. The combination treatment significantly suppressed cell growth and increased the apoptotic response of DLD-1 and resulted in apoptosis rather than necrosis, as shown by PI/annexin V staining and degradation of procaspase-3. CONCLUSION These results document the anti-proliferative and apoptotic activities of PDT in combination with the PPARγ ligand troglitazone and provide a strong rationale for testing the therapeutic potential of combination treatment in colon cancer.
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Affiliation(s)
- Hyunju Park
- Department of Physiology, Tissue Injury Defense Research Center, Ewha Womans University School of Medicine, Seoul, Korea
| | - Si Hwan Ko
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Myun Lee
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Jeon Han Park
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Youn Hee Choi
- Department of Physiology, Tissue Injury Defense Research Center, Ewha Womans University School of Medicine, Seoul, Korea.
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Guo F, Ren X, Dong Y, Hu X, Xu D, Zhou H, Meng F, Tian W, Zhao Y. Constitutive expression of PPARγ inhibits proliferation and migration of gastric cancer cells and down-regulates Wnt/β-Catenin signaling pathway downstream target genes TERT and ENAH. Gene 2016; 584:31-37. [DOI: 10.1016/j.gene.2016.03.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 02/25/2016] [Accepted: 03/03/2016] [Indexed: 02/06/2023]
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Sarnelli G, D’Alessandro A, Iuvone T, Capoccia E, Gigli S, Pesce M, Seguella L, Nobile N, Aprea G, Maione F, de Palma GD, Cuomo R, Steardo L, Esposito G. Palmitoylethanolamide Modulates Inflammation-Associated Vascular Endothelial Growth Factor (VEGF) Signaling via the Akt/mTOR Pathway in a Selective Peroxisome Proliferator-Activated Receptor Alpha (PPAR-α)-Dependent Manner. PLoS One 2016; 11:e0156198. [PMID: 27219328 PMCID: PMC4878779 DOI: 10.1371/journal.pone.0156198] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/10/2016] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND AIM Angiogenesis is emerging as a pivotal process in chronic inflammatory pathologies, promoting immune infiltration and prompting carcinogenesis. Ulcerative Colitis (UC) and Crohn's Disease (CD) represent paradigmatic examples of intestinal chronic inflammatory conditions in which the process of neovascularization correlates with the severity and progression of the diseases. Molecules able to target the angiogenesis have thus the potential to synergistically affect the disease course. Beyond its anti-inflammatory effect, palmitoylethanolamide (PEA) is able to reduce angiogenesis in several chronic inflammatory conditions, but no data about its anti-angiogenic activity in colitis have been produced, yet. METHODS The effects of PEA on inflammation-associated angiogenesis in mice with dextran sulphate sodium (DSS)-induced colitis and in patients with UC were assessed. The release of Vascular Endothelial Growth Factor (VEGF), the hemoglobin tissue content, the expression of CD31 and of phosphatidylinositol 3-kinase/Akt/mammalian-target-of-rapamycin (mTOR) signaling axis were all evaluated in the presence of different concentrations of PEA and concomitant administration of PPAR-α and -γ antagonists. RESULTS Our results demonstrated that PEA, in a selective peroxisome proliferator activated receptor (PPAR)-α dependent mechanism, inhibits colitis-associated angiogenesis, decreasing VEGF release and new vessels formation. Furthermore, we demonstrated that the mTOR/Akt axis regulates, at least partly, the angiogenic process in IBD and that PEA directly affects this pathway. CONCLUSIONS Our results suggest that PEA may improve inflammation-driven angiogenesis in colonic mucosa, thus reducing the mucosal damage and potentially affecting disease progression and the shift towards the carcinogenesis.
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Affiliation(s)
- Giovanni Sarnelli
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Alessandra D’Alessandro
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Teresa Iuvone
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Elena Capoccia
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
| | - Stefano Gigli
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
| | - Marcella Pesce
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Luisa Seguella
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
| | - Nicola Nobile
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
| | - Giovanni Aprea
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Francesco Maione
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | | | - Rosario Cuomo
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Luca Steardo
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
| | - Giuseppe Esposito
- Department of Physiology and Pharmacology ‘Vittorio Erspamer’, La Sapienza University of Rome, Rome, Italy
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Ashok D, Vanaja B. Synthesis and anticancer activity evaluation of (E)-3-{[5-(aryl)-1,3,4-oxadiazol-2-yl]methyl}-5-(3,4,5-trimethoxybenzylidene)thiazolidine-2,4-diones. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216030270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sarnelli G, Gigli S, Capoccia E, Iuvone T, Cirillo C, Seguella L, Nobile N, D'Alessandro A, Pesce M, Steardo L, Cuomo R, Esposito G. Palmitoylethanolamide Exerts Antiproliferative Effect and Downregulates VEGF Signaling in Caco-2 Human Colon Carcinoma Cell Line Through a Selective PPAR-α-Dependent Inhibition of Akt/mTOR Pathway. Phytother Res 2016; 30:963-70. [PMID: 26929026 DOI: 10.1002/ptr.5601] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 01/17/2023]
Abstract
Palmitoylethanolamide (PEA) is a nutraceutical compound that has been demonstrated to improve intestinal inflammation. We aimed at evaluating its antiproliferative and antiangiogenic effects in human colon adenocarcinoma Caco-2 cell line. Caco-2 cells were treated with increasing concentrations of PEA (0.001, 0.01 and 0.1 μM) in the presence of peroxisome proliferator-activated receptor-a (PPAR-α) or PPAR-γ antagonists. Cell proliferation was evaluated by performing a MTT assay. Vascular endothelial growth factor (VEGF) release was estimated by ELISA, while the expression of VEGF receptor and the activation of the Akt/mammalian target of rapamycin (mTOR) pathway were evaluated by western blot analysis. PEA caused a significant and concentration-dependent decrease of Caco-2 cell proliferation at 48 h. PEA administration significantly reduced in a concentration-dependent manner VEGF secretion and VEGF receptor expression. Inhibition of Akt phosphorylation and a downstream decrease of phospho-mTOR and of p-p70S6K were observed as compared with untreated cells. PPAR-α, but not PPAR-γ antagonist, reverted all effects of PEA. PEA is able to decrease cell proliferation and angiogenesis. The antiangiogenic effect of PEA depends on the specific inhibition of the AkT/mTOR axis, through the activation of PPAR-α pathway. If supported by in vivo models, our data pave the way to PEA co-administration to the current chemotherapeutic regimens for colon carcinoma. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Giovanni Sarnelli
- Department of Clinical Medicine and Surgery, 'Federico II' University of Naples, Naples, Italy
| | - Stefano Gigli
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
| | - Elena Capoccia
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
| | - Teresa Iuvone
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Carla Cirillo
- Laboratory for Enteric NeuroScience (LENS), Translational Research Center for Gastrointestinal Disorders (TARGID), University of Leuven, Leuven, Belgium
| | - Luisa Seguella
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
| | - Nicola Nobile
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
| | - Alessandra D'Alessandro
- Department of Clinical Medicine and Surgery, 'Federico II' University of Naples, Naples, Italy
| | - Marcella Pesce
- Department of Clinical Medicine and Surgery, 'Federico II' University of Naples, Naples, Italy
| | - Luca Steardo
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
| | - Rosario Cuomo
- Department of Clinical Medicine and Surgery, 'Federico II' University of Naples, Naples, Italy
| | - Giuseppe Esposito
- Department of Physiology and Pharmacology 'Vittorio Erspamer', La Sapienza University of Rome, Rome, Italy
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Bouguen G, Dubuquoy L, Desreumaux P, Brunner T, Bertin B. Intestinal steroidogenesis. Steroids 2015; 103:64-71. [PMID: 25560486 DOI: 10.1016/j.steroids.2014.12.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 12/23/2014] [Indexed: 12/26/2022]
Abstract
Steroids are fundamental hormones that control a wide variety of physiological processes such as metabolism, immune functions, and sexual characteristics. Historically, steroid synthesis was considered a function restricted to the adrenals and the gonads. In the past 20 years, a significant number of studies have demonstrated that steroids could also be synthesized or metabolized by other organs. According to these studies, the intestine appears to be a major source of de novo produced glucocorticoids as well as a tissue capable of producing and metabolizing sex steroids. This finding is based on the detection of steroidogenic enzyme expression as well as the presence of bioactive steroids in both the rodent and human gut. Within the intestinal mucosa, the intestinal epithelial cell layer is one of the main cellular sources of steroids. Glucocorticoid synthesis regulation in the intestinal epithelial cells is unique in that it does not involve the classical positive regulator steroidogenic factor-1 (SF-1) but a closely related homolog, namely the liver receptor homolog-1 (LRH-1). This local production of immunoregulatory glucocorticoids contributes to intestinal homeostasis and has been linked to pathophysiology of inflammatory bowel diseases. Intestinal epithelial cells also possess the ability to metabolize sex steroids, notably estrogen; this mechanism may impact colorectal cancer development. In this review, we contextualize and discuss what is known about intestinal steroidogenesis and regulation as well as the key role these functions play both in physiological and pathological conditions.
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Affiliation(s)
- Guillaume Bouguen
- Service des Maladies de l'Appareil digestif, CHU Pontchaillou, Rennes, France; UMR991, Liver Metabolism and Cancer, France; Université de Rennes 1, France
| | - Laurent Dubuquoy
- Université de Lille, F-59000 Lille, France; Inserm U995, F-59045 Lille, France
| | - Pierre Desreumaux
- Université de Lille, F-59000 Lille, France; Inserm U995, F-59045 Lille, France; CHU Lille, Service des Maladies de l'Appareil Digestif et de la Nutrition, Hôpital Claude Huriez, F-59037 Lille, France
| | - Thomas Brunner
- Biochemical Pharmacology, Department of Biology, University of Konstanz, Germany
| | - Benjamin Bertin
- Université de Lille, F-59000 Lille, France; Inserm U995, F-59045 Lille, France; Faculté des Sciences Pharmaceutiques et Biologiques, F-59006 Lille, France.
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Kole L, Sarkar M, Deb A, Giri B. Pioglitazone, an anti-diabetic drug requires sustained MAPK activation for its anti-tumor activity in MCF7 breast cancer cells, independent of PPAR-γ pathway. Pharmacol Rep 2015; 68:144-54. [PMID: 26721366 DOI: 10.1016/j.pharep.2015.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 07/29/2015] [Accepted: 08/03/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND The thiazolidinedione (TZD) class of peroxisome proliferator-activated receptor gamma (PPAR-γ) ligands are known for their ability to induce adipocyte differentiation, to increase insulin sensitivity including anticancer properties. But, whether or not upstream events like MAPK activation or PPAR-γ signaling are involved or associated with this anticancer activity is not well understood in breast cancer cells. The role of MAPK and PPAR pathways during the pioglitazone (Pio) induced PPAR-γ independent anticancer activity in MCF7 cells has been focused here. METHODS The anticancer activity of Pio has been investigated in breast cancer cells in vitro. Anti-tumor effects were assessed by alamar blue assay, Western blot analysis, cell cycle analysis, and annexin V-FITC/PI binding assay by flow cytometry, Hoechst staining and luciferase assay. RESULTS The anticancer activity of Pio is found to be correlating with the up regulation of CDKIs (p21/p27) and down regulation of CDK-4. This study demonstrates that the induction of CDKIs by Pio is due to the sustained activation of MAPK. The Pio-mediated activation of MAPK is transmitted to activate ELK-1 and the related anti-proliferation is blocked by MEK inhibitor (PD-184352). CONCLUSIONS Pio suppresses the proliferation of MCF7 cells, at least partly by a PPAR-γ-independent mechanism involving the induction of p21 which in turn requires sustained activation of MAPK. These findings implicate the utility of Pio in the treatment of PPAR positive or negative human cancers and the development of a new class of compounds to enhance the effectiveness of Pio.
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Affiliation(s)
- Labanyamoy Kole
- Discovery Research SBU, Dr. Reddy's Laboratories Ltd., Hyderabad, India
| | - Mrinmoy Sarkar
- Experimental Medicine & Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Kolkata, India
| | - Anwesha Deb
- Experimental Medicine & Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Kolkata, India
| | - Biplab Giri
- Experimental Medicine & Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Kolkata, India.
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Astapova O, Leff T. PPARγ mutations, lipodystrophy and diabetes. Horm Mol Biol Clin Investig 2015; 20:63-70. [PMID: 25460295 DOI: 10.1515/hmbci-2014-0033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 10/29/2014] [Indexed: 11/15/2022]
Abstract
The focus of this review is the lipodystrophy syndrome caused by mutation in the PPARγ nuclear receptor - partial familial lipodystrophy FPLD3. To provide a broader context for how these mutations act to generate the clinical features of partial lipodystrophy we will review the basic biology of PPARγ and also survey the set PPARγ genetic variants that do not cause lipodystrophy, but are nonetheless associated with clinically related syndromes, specifically type 2 diabetes.
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Nikhil K, Sharan S, Singh AK, Chakraborty A, Roy P. Anticancer activities of pterostilbene-isothiocyanate conjugate in breast cancer cells: involvement of PPARγ. PLoS One 2014; 9:e104592. [PMID: 25119466 PMCID: PMC4131888 DOI: 10.1371/journal.pone.0104592] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 07/15/2014] [Indexed: 01/17/2023] Open
Abstract
Trans-3,5-dimethoxy-4'-hydroxystilbene (PTER), a natural dimethylated analog of resveratrol, preferentially induces certain cancer cells to undergo apoptosis and could thus have a role in cancer chemoprevention. Peroxisome proliferator-activated receptor γ (PPARγ), a member of the nuclear receptor superfamily, is a ligand-dependent transcription factor whose activation results in growth arrest and/or apoptosis in a variety of cancer cells. Here we investigated the potential of PTER-isothiocyanate (ITC) conjugate, a novel class of hybrid compound (PTER-ITC) synthesized by appending an ITC moiety to the PTER backbone, to induce apoptotic cell death in hormone-dependent (MCF-7) and -independent (MDA-MB-231) breast cancer cell lines and to elucidate PPARγ involvement in PTER-ITC action. Our results showed that when pre-treated with PPARγ antagonists or PPARγ siRNA, both breast cancer cell lines suppressed PTER-ITC-induced apoptosis, as determined by annexin V/propidium iodide staining and cleaved caspase-9 expression. Furthermore, PTER-ITC significantly increased PPARγ mRNA and protein levels in a dose-dependent manner and modulated expression of PPARγ-related genes in both breast cancer cell lines. This increase in PPARγ activity was prevented by a PPARγ-specific inhibitor, in support of our hypothesis that PTER-ITC can act as a PPARγ activator. PTER-ITC-mediated upregulation of PPARγ was counteracted by co-incubation with p38 MAPK or JNK inhibitors, suggesting involvement of these pathways in PTER-ITC action. Molecular docking analysis further suggested that PTER-ITC interacted with 5 polar and 8 non-polar residues within the PPARγ ligand-binding pocket, which are reported to be critical for its activity. Collectively, our observations suggest potential applications for PTER-ITC in breast cancer prevention and treatment through modulation of the PPARγ activation pathway.
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Affiliation(s)
- Kumar Nikhil
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Shruti Sharan
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Abhimanyu K. Singh
- Department of Macromolecular Structures, Centro Nacional de Biotecnologia (CNB-CSIC), Campus de Cantoblanco, Madrid, Spain
| | - Ajanta Chakraborty
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Partha Roy
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
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Wang L, Waltenberger B, Pferschy-Wenzig EM, Blunder M, Liu X, Malainer C, Blazevic T, Schwaiger S, Rollinger JM, Heiss EH, Schuster D, Kopp B, Bauer R, Stuppner H, Dirsch VM, Atanasov AG. Natural product agonists of peroxisome proliferator-activated receptor gamma (PPARγ): a review. Biochem Pharmacol 2014; 92:73-89. [PMID: 25083916 PMCID: PMC4212005 DOI: 10.1016/j.bcp.2014.07.018] [Citation(s) in RCA: 411] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/18/2014] [Accepted: 07/21/2014] [Indexed: 12/13/2022]
Abstract
Agonists of the nuclear receptor PPARγ are therapeutically used to combat hyperglycaemia associated with the metabolic syndrome and type 2 diabetes. In spite of being effective in normalization of blood glucose levels, the currently used PPARγ agonists from the thiazolidinedione type have serious side effects, making the discovery of novel ligands highly relevant. Natural products have proven historically to be a promising pool of structures for drug discovery, and a significant research effort has recently been undertaken to explore the PPARγ-activating potential of a wide range of natural products originating from traditionally used medicinal plants or dietary sources. The majority of identified compounds are selective PPARγ modulators (SPPARMs), transactivating the expression of PPARγ-dependent reporter genes as partial agonists. Those natural PPARγ ligands have different binding modes to the receptor in comparison to the full thiazolidinedione agonists, and on some occasions activate in addition PPARα (e.g. genistein, biochanin A, sargaquinoic acid, sargahydroquinoic acid, resveratrol, amorphastilbol) or the PPARγ-dimer partner retinoid X receptor (RXR; e.g. the neolignans magnolol and honokiol). A number of in vivo studies suggest that some of the natural product activators of PPARγ (e.g. honokiol, amorfrutin 1, amorfrutin B, amorphastilbol) improve metabolic parameters in diabetic animal models, partly with reduced side effects in comparison to full thiazolidinedione agonists. The bioactivity pattern as well as the dietary use of several of the identified active compounds and plant extracts warrants future research regarding their therapeutic potential and the possibility to modulate PPARγ activation by dietary interventions or food supplements.
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Affiliation(s)
- Limei Wang
- Department of Pharmacognosy, University of Vienna, Austria
| | - Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Austria
| | | | - Martina Blunder
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Austria
| | - Xin Liu
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Austria
| | | | - Tina Blazevic
- Department of Pharmacognosy, University of Vienna, Austria
| | - Stefan Schwaiger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Austria
| | - Judith M Rollinger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Austria
| | - Elke H Heiss
- Department of Pharmacognosy, University of Vienna, Austria
| | - Daniela Schuster
- Institute of Pharmacy/Pharmaceutical Chemistry and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Austria
| | - Brigitte Kopp
- Department of Pharmacognosy, University of Vienna, Austria
| | - Rudolf Bauer
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Austria
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Austria
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Zurlo D, Assante G, Moricca S, Colantuoni V, Lupo A. Cladosporol A, a new peroxisome proliferator-activated receptor γ (PPARγ) ligand, inhibits colorectal cancer cells proliferation through β-catenin/TCF pathway inactivation. Biochim Biophys Acta Gen Subj 2014; 1840:2361-72. [DOI: 10.1016/j.bbagen.2014.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 04/05/2014] [Accepted: 04/08/2014] [Indexed: 12/13/2022]
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The PPARγ Agonist Protects Cardiomyocytes from Oxidative Stress and ApoptosisviaThioredoxin Overexpression. Biosci Biotechnol Biochem 2014; 76:2181-7. [DOI: 10.1271/bbb.120423] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Rêgo MJBDM, Galdino-Pitta MR, Pereira DTM, da Silva JC, Rabello MM, Alves de Lima MDC, Hernandes MZ, da Rocha Pitta I, Galdino SL, da Rocha Pitta MG. Synthesis, in vitro anticancer activity and in silico study of new disubstituted thiazolidinedione derivatives. Med Chem Res 2014. [DOI: 10.1007/s00044-013-0902-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Kumar GS, Hazra S. Sanguinarine, a promising anticancer therapeutic: photochemical and nucleic acid binding properties. RSC Adv 2014. [DOI: 10.1039/c4ra06456a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Sanguinarine is a benzophenanthridine plant alkaloid with remarkable therapeutic utility. In this article the photochemical and nucleic acid binding properties of this putative anticancer agent is reviewed.
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Affiliation(s)
- Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory
- Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700032, India
| | - Soumitra Hazra
- Biophysical Chemistry Laboratory
- Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700032, India
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Kakehashi A, Hagiwara A, Imai N, Nagano K, Nishimaki F, Banton M, Wei M, Fukushima S, Wanibuchi H. Mode of action of ethyl tertiary-butyl ether hepatotumorigenicity in the rat: Evidence for a role of oxidative stress via activation of CAR, PXR and PPAR signaling pathways. Toxicol Appl Pharmacol 2013; 273:390-400. [DOI: 10.1016/j.taap.2013.09.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/18/2013] [Accepted: 09/20/2013] [Indexed: 11/16/2022]
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D’Archivio M, Scazzocchio B, Giammarioli S, Fiani ML, Varì R, Santangelo C, Veneziani A, Iacovelli A, Giovannini C, Gessani S, Masella R. ω3-PUFAs exert anti-inflammatory activity in visceral adipocytes from colorectal cancer patients. PLoS One 2013; 8:e77432. [PMID: 24116229 PMCID: PMC3792028 DOI: 10.1371/journal.pone.0077432] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 09/03/2013] [Indexed: 01/05/2023] Open
Abstract
Objective The aim of this study was to correlate specific fatty acid profiles of visceral white adipose tissue (WAT) with inflammatory signatures potentially associated with colorectal cancer (CRC). Methods Human adipocytes were isolated from biopsies of visceral WAT from 24 subjects subdivided in four groups: normal-weight (BMI 22.0-24.9 Kg/m2) and over-weight/obese (BMI 26.0-40.0 Kg/m2), affected or not by CRC. To define whether obesity and/or CRC affect the inflammatory status of WAT, the activation of the pro-inflammatory STAT3 and the anti-inflammatory PPARγ transcription factors as well as the expression of adiponectin were analyzed by immunoblotting in adipocytes isolated from each group of subjects. Furthermore, to evaluate whether differences in inflammatory WAT environment correlate with specific fatty acid profiles, gas-chromatographic analysis was carried out on WAT collected from all subject categories. Finally, the effect of the ω3 docosahexaenoic acid treatment on the balance between pro- and anti-inflammatory factors in adipocytes was also evaluated. Results We provide the first evidence for the existence of a pro-inflammatory environment in WAT of CRC patients, as assessed by the up-regulation of STAT3, and the concomitant decrease of PPARγ and adiponectin with respect to healthy subjects. WAT inflammatory status was independent of obesity degree but correlated with a decreased ω3-/ω6-polyunsaturated fatty acid ratio. These observations suggested that qualitative changes, other than quantitative ones, in WAT fatty acid may influence tissue dysfunctions potentially linked to inflammatory conditions. This hypothesis was further supported by the finding that adipocyte treatment with docosahexaenoic acid restored the equilibrium between STAT3 and PPARγ. Conclusion Our results suggest that adipocyte dysfunctions occur in CRC patients creating a pro-inflammatory environment that might influence cancer development. Furthermore, the protective potential of docosahexaenoic acid in re-establishing the equilibrium between pro- and anti-inflammatory factors might represent a useful tool for preventive and therapeutic strategies.
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Affiliation(s)
- Massimo D’Archivio
- Department Veterinary Public Health and Food Safety, Rome, Italy
- * E-mail:
| | | | | | - Maria L. Fiani
- Department Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Rosaria Varì
- Department Veterinary Public Health and Food Safety, Rome, Italy
| | | | | | | | | | - Sandra Gessani
- Department Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Roberta Masella
- Department Veterinary Public Health and Food Safety, Rome, Italy
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Zhao H, Gu H, Zhang H, Li JH, Zhao WE. PPARγ-dependent pathway in the growth-inhibitory effects of K562 cells by carotenoids in combination with rosiglitazone. Biochim Biophys Acta Gen Subj 2013; 1840:545-55. [PMID: 24036327 DOI: 10.1016/j.bbagen.2013.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 09/03/2013] [Accepted: 09/04/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND Carotenoids have been found to play roles in the prevention and therapy of some cancers which PPARγ was also discovered to be involved in. The present studies were directed to determine the inhibitory effects of carotenoids in combination with rosiglitazone, a synthetic PPARγ agonist, on K562 cell proliferation and elucidate the contribution of PPARγ-dependent pathway to cell proliferation suppression. METHODS The effects of carotenoid and rosiglitazone combination on K562 cell proliferation were evaluated by trypan blue dye exclusion assay and MTT assay. When PPARγ has been inhibited by GW9662 and siRNA, cycle-related regulator expression in K562 cells treated with carotenoid and rosiglitazone combination was analyzed by Western blotting. RESULTS Rosiglitazone inhibited K562 cell proliferation and augmented the inhibitory effects of carotenoids on the cell proliferation greatly. Specific PPARγ inhibition attenuated the cell growth suppression induced by carotenoid and rosiglitazone combination. GW9662 pre-treatment attenuated the enhanced up-regulation of PPARγ expression caused by the combination treatment. Moreover, GW9662 and PPARγ siRNA also significantly attenuated the up-regulation of p21 and down-regulation of cyclin D1 caused by carotenoids and rosiglitazone. CONCLUSIONS PPARγ signaling pathway, via stimulating p21 and inhibiting cyclin D1, may play an important role in the anti-proliferative effects of carotenoid and rosiglitazone combination on K562 cells. GENERAL SIGNIFICANCE Carotenoids in combination with rosiglitazone are hopeful to provide attractive dietary or supplementation-based and pharmaceutical strategies to treat cancer diseases.
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Affiliation(s)
- Han Zhao
- School of Chemical Engineering and Energy, Zhengzhou University, No. 100 Science Road, Zhengzhou 450001, PR China
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41
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Oz Gul O, Cinkilic N, Gul CB, Cander S, Vatan O, Ersoy C, Yılmaz D, Tuncel E. Comparative genotoxic and cytotoxic effects of the oral antidiabetic drugs sitagliptin, rosiglitazone, and pioglitazone in patients with type-2 diabetes: A cross-sectional, observational pilot study. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 757:31-5. [DOI: 10.1016/j.mrgentox.2013.04.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 02/26/2013] [Accepted: 04/05/2013] [Indexed: 11/29/2022]
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Anticancer Activities of PPARγ in Breast Cancer Are Context-Dependent. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:1972-5. [DOI: 10.1016/j.ajpath.2013.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 03/15/2013] [Indexed: 11/21/2022]
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Burris TP, Solt LA, Wang Y, Crumbley C, Banerjee S, Griffett K, Lundasen T, Hughes T, Kojetin DJ. Nuclear receptors and their selective pharmacologic modulators. Pharmacol Rev 2013; 65:710-78. [PMID: 23457206 PMCID: PMC11060414 DOI: 10.1124/pr.112.006833] [Citation(s) in RCA: 185] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Nuclear receptors are ligand-activated transcription factors and include the receptors for steroid hormones, lipophilic vitamins, sterols, and bile acids. These receptors serve as targets for development of myriad drugs that target a range of disorders. Classically defined ligands that bind to the ligand-binding domain of nuclear receptors, whether they are endogenous or synthetic, either activate receptor activity (agonists) or block activation (antagonists) and due to the ability to alter activity of the receptors are often termed receptor "modulators." The complex pharmacology of nuclear receptors has provided a class of ligands distinct from these simple modulators where ligands display agonist/partial agonist/antagonist function in a tissue or gene selective manner. This class of ligands is defined as selective modulators. Here, we review the development and pharmacology of a range of selective nuclear receptor modulators.
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Affiliation(s)
- Thomas P Burris
- The Scripps Research Institute, 130 Scripps Way 2A1, Jupiter, FL 33458, USA.
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Hefetz-Sela S, Scherer PE. Adipocytes: impact on tumor growth and potential sites for therapeutic intervention. Pharmacol Ther 2013; 138:197-210. [PMID: 23353703 DOI: 10.1016/j.pharmthera.2013.01.008] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 01/10/2013] [Indexed: 12/12/2022]
Abstract
The prevalence of obesity has increased dramatically in recent decades, reaching epidemic proportions. It is becoming clear that obesity is associated not only with type 2 diabetes mellitus and cardiovascular disease, but also with multiple types of cancer. Obesity is characterized by impaired adipose tissue function, leading to adipocyte hypertrophy, inflammation, hypoxia and induced angiogenesis, extracellular matrix remodeling and fibrosis as well as additional stress responses. While epidemiological data indicate that obesity is a well-established risk factor for certain malignancies, the molecular mechanisms underlying the link between obesity and cancer are still poorly understood. Recent data implicates systemic and paracrine factors secreted from adipose tissue during the obese state, promoting cancer development and progression. Here, we focus on the obesity-associated adipose tissue remodeling that may not only lead to metabolic complications, but also to a permissive pro-tumorigenic environment. Particular attention is given to the local pro-tumorigenic effects derived from adipocytes that present an important part of the tumor microenvironment of at least some cancers, in an attempt to describe the nature of the major players of the adipocyte-cancer cell crosstalk that dictates to a large extent tumor progression.
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Affiliation(s)
- Simona Hefetz-Sela
- Touchstone Diabetes Center, Departments of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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Skelhorne-Gross G, Reid AL, Apostoli AJ, Di Lena MA, Rubino RE, Peterson NT, Schneider M, SenGupta SK, Gonzalez FJ, Nicol CJB. Stromal adipocyte PPARγ protects against breast tumorigenesis. Carcinogenesis 2012; 33:1412-20. [PMID: 22581835 DOI: 10.1093/carcin/bgs173] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Peroxisome proliferator-activated receptor (PPAR)γ regulates the expression of genes essential for fat storage, primarily through its activity in adipocytes. It also has a role in carcinogenesis. PPARγ normally stops the in vivo progression of 7,12-dimethylbenz[a]anthracene (DMBA)-mediated breast tumours as revealed with PPARγ haploinsufficient mice. Since many cell types associated with the mammary gland express PPARγ, each with unique signal patterns, this study aimed to define which tissues are required for PPARγ-dependent antitumour effects. Accordingly, adipocyte-specific PPARγ knockout (PPARγ-A KO) mice and their wild-type (PPARγ-WT) controls were generated, and treated with DMBA for 6 weeks to initiate breast tumorigenesis. On week 7, mice were randomized to continue on normal chow diet or one supplemented with rosiglitazone (ROSI), and followed for 25 weeks for tumour outcomes. In PPARγ-A KO versus PPARγ-WT mice, malignant mammary tumour incidence was significantly higher and mammary tumour latency was decreased. DMBA + ROSI treatment reduced average mammary tumour volumes by 50%. Gene expression analyses of mammary glands by quantitative real-time polymerase chain reaction and immunofluorescence indicated that untreated PPARγ-A KOs had significantly decreased BRCA1 expression in mammary stromal adipocytes. Compared with PPARγ-WT mice, serum leptin levels in PPARγ-A KOs were also significantly higher throughout the study. Together, these data are the first to suggest that in vivo PPARγ expression in mammary stromal adipocytes attenuates breast tumorigenesis through BRCA1 upregulation and decreased leptin secretion. This study supports a protective effect of activating PPARγ as a novel chemopreventive therapy for breast cancer.
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Affiliation(s)
- Graham Skelhorne-Gross
- Department of Pathology and Molecular Medicine, Richardson Laboratories, Queen's University, Kingston, Ontario, Canada
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Vamecq J, Colet JM, Vanden Eynde JJ, Briand G, Porchet N, Rocchi S. PPARs: Interference with Warburg' Effect and Clinical Anticancer Trials. PPAR Res 2012; 2012:304760. [PMID: 22654896 PMCID: PMC3357561 DOI: 10.1155/2012/304760] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 02/15/2012] [Accepted: 02/19/2012] [Indexed: 02/07/2023] Open
Abstract
The metabolic/cell signaling basis of Warburg's effect ("aerobic glycolysis") and the general metabolic phenotype adopted by cancer cells are first reviewed. Several bypasses are adopted to provide a panoramic integrated view of tumoral metabolism, by attributing a central signaling role to hypoxia-induced factor (HIF-1) in the expression of aerobic glycolysis. The cancer metabolic phenotype also results from alterations of other routes involving ras, myc, p53, and Akt signaling and the propensity of cancer cells to develop signaling aberrances (notably aberrant surface receptor expression) which, when present, offer unique opportunities for therapeutic interventions. The rationale for various emerging strategies for cancer treatment is presented along with mechanisms by which PPAR ligands might interfere directly with tumoral metabolism and promote anticancer activity. Clinical trials using PPAR ligands are reviewed and followed by concluding remarks and perspectives for future studies. A therapeutic need to associate PPAR ligands with other anticancer agents is perhaps an important lesson to be learned from the results of the clinical trials conducted to date.
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Affiliation(s)
- Joseph Vamecq
- Inserm, HMNO, CBP, CHRU Lille, 59037 Lille, France
- Biochemistry and Molecular Biology, HMNO, CBP, CHRU Lille, 59037 Lille, France
| | - Jean-Marie Colet
- Department of Human Biology and Toxicology, Faculty of Medicine and Pharmacy, UMons, 7000 Mons, Belgium
| | | | - Gilbert Briand
- Biochemistry and Molecular Biology, HMNO, CBP, CHRU Lille, 59037 Lille, France
| | - Nicole Porchet
- Biochemistry and Molecular Biology, HMNO, CBP, CHRU Lille, 59037 Lille, France
| | - Stéphane Rocchi
- Inserm U1065, IFR 50, Mediterranean Center of Molecular Medicine, 06204 Nice, France
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Cariou B, Charbonnel B, Staels B. Thiazolidinediones and PPARγ agonists: time for a reassessment. Trends Endocrinol Metab 2012; 23:205-15. [PMID: 22513163 DOI: 10.1016/j.tem.2012.03.001] [Citation(s) in RCA: 296] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Revised: 03/05/2012] [Accepted: 03/06/2012] [Indexed: 12/20/2022]
Abstract
Thiazolidinediones (TZDs) are anti-diabetic drugs that act as insulin sensitizers and are used in the management of type 2 diabetes mellitus. TZDs, which are ligands for the transcription factor peroxisome proliferator-activated receptor PPARγ, have a wide spectrum of action, including modulation of glucose and lipid homeostasis, inflammation, atherosclerosis, bone remodeling and cell proliferation. Randomized clinical trials have demonstrated the efficacy and durability of the anti-hyperglycemic action of TZDs, and have suggested that the TZD pioglitazone also exerts cardioprotective action. However, the clinical use of TZDs is limited by the occurrence of several adverse events, including body-weight gain, congestive heart failure, bone fractures and possibly bladder cancer. Therefore, there is an unmet need for the development of new safer PPARγ-modulating drugs.
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Affiliation(s)
- Bertrand Cariou
- Unité Mixte de Recherche 1087, Institut National de la Santé et de la Recherche Médicale (INSERM), Nantes 44000, France.
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Barros FWA, Silva TG, da Rocha Pitta MG, Bezerra DP, Costa-Lotufo LV, de Moraes MO, Pessoa C, de Moura MAFB, de Abreu FC, de Lima MDCA, Galdino SL, Pitta IDR, Goulart MOF. Synthesis and cytotoxic activity of new acridine-thiazolidine derivatives. Bioorg Med Chem 2012; 20:3533-9. [PMID: 22546208 DOI: 10.1016/j.bmc.2012.04.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Revised: 03/27/2012] [Accepted: 04/04/2012] [Indexed: 01/04/2023]
Abstract
Although their exact role in controlling tumour growth and apoptosis in humans remains undefined, acridine and thiazolidine compounds have been shown to act as tumour suppressors in most cancers. Based on this finding, a series of novel hybrid 5-acridin-9-ylmethylene-3-benzyl-thiazolidine-2,4-diones were synthesised via N-alkylation and Michael reaction. The cell viability was analysed using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and DNA interaction assays were performed using electrochemical techniques.
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Affiliation(s)
- Francisco W A Barros
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
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Troglitazone induces extracellular matrix and cytoskeleton remodeling in mouse collecting duct cells. J Biomed Biotechnol 2012; 2012:507057. [PMID: 22500093 PMCID: PMC3304576 DOI: 10.1155/2012/507057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 11/09/2011] [Accepted: 11/15/2011] [Indexed: 11/28/2022] Open
Abstract
Peroxisome proliferator-activated receptor (PPARγ) has been shown to have a protective role in the nephron through its ability to inhibit a transforming growth factor- (TGF-β) mediated fibrotic response. In contrast, PPARγ was also shown to induce a mesenchymal transformation in epithelial intestinal cells. A fibrotic response in the collecting duct has only recently been established; however, the entire collecting duct has not been fully examined. Inner medullary collecting duct cells (IMCD-K2) and mouse cortical collecting duct cells (M1), representing the cortical and medullary collecting duct, were exposed to 5–10 μM troglitazone for 24 hours. Troglitazone resulted in an elongated morphology, 60% decreases in E-cadherin and β-catenin, a 35% decrease in α-catenin, and a 1.5-fold increase in fibronectin. These effects were not reversed with PPARγ antagonists or affected with PPARγ overexpression. Our results indicate that troglitazone induced a mesenchymal-like transformation in M1 and IMCD-K2 epithelial cells independently of PPARγ.
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50
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Kim HH, Kim YS, Kang YK, Moon JS. Leptin and peroxisome proliferator-activated receptor γ expression in colorectal adenoma. World J Gastroenterol 2012; 18:557-62. [PMID: 22363123 PMCID: PMC3280402 DOI: 10.3748/wjg.v18.i6.557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 09/07/2011] [Accepted: 09/14/2011] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expressions of leptin and peroxisome proliferator-activated receptor γ (PPARG) in relation to body mass index (BMI).
METHODS: We evaluated leptin and PPARG expression in 30 adenomas over 1 cm in size by immunohistochemical staining. In addition, clinicopathologic features including BMI were assessed.
RESULTS: PPARG and leptin expression showed a strong positive correlation (P = 0.035). The average BMI of the leptin-positive group was higher than that of the leptin-negative group (25.4 ± 3.4 kg/m2vs 22.6 ± 2.4 kg/m2, P = 0.018), and leptin expression was significantly correlated with high BMI (P = 0.024). Leptin expression was more frequently observed in intermediate/high grade dysplasia than in low grade dysplasia (P = 0.030). However, PPARG expression was not correlated with BMI and grade of dysplasia.
CONCLUSION: BMI has influenced on the leptin expression of colorectal adenoma. The exact mechanism underlies the strong correlation between leptin and PPARG expression needs further study.
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