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Erdem C, Gross SM, Heiser LM, Birtwistle MR. MOBILE pipeline enables identification of context-specific networks and regulatory mechanisms. Nat Commun 2023; 14:3991. [PMID: 37414767 PMCID: PMC10326020 DOI: 10.1038/s41467-023-39729-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 06/27/2023] [Indexed: 07/08/2023] Open
Abstract
Robust identification of context-specific network features that control cellular phenotypes remains a challenge. We here introduce MOBILE (Multi-Omics Binary Integration via Lasso Ensembles) to nominate molecular features associated with cellular phenotypes and pathways. First, we use MOBILE to nominate mechanisms of interferon-γ (IFNγ) regulated PD-L1 expression. Our analyses suggest that IFNγ-controlled PD-L1 expression involves BST2, CLIC2, FAM83D, ACSL5, and HIST2H2AA3 genes, which were supported by prior literature. We also compare networks activated by related family members transforming growth factor-beta 1 (TGFβ1) and bone morphogenetic protein 2 (BMP2) and find that differences in ligand-induced changes in cell size and clustering properties are related to differences in laminin/collagen pathway activity. Finally, we demonstrate the broad applicability and adaptability of MOBILE by analyzing publicly available molecular datasets to investigate breast cancer subtype specific networks. Given the ever-growing availability of multi-omics datasets, we envision that MOBILE will be broadly useful for identification of context-specific molecular features and pathways.
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Affiliation(s)
- Cemal Erdem
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, USA
| | - Sean M Gross
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
| | - Laura M Heiser
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.
| | - Marc R Birtwistle
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, USA.
- Department of Bioengineering, Clemson University, Clemson, SC, USA.
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Nguyen QN, Lee SR, Kim B, Hong JH, Jang YS, Lee DE, Pang C, Kang KS, Kim KH. Estrogenic Activity of 4-Hydroxy-Benzoic Acid from Acer tegmentosum via Estrogen Receptor α-Dependent Signaling Pathways. PLANTS (BASEL, SWITZERLAND) 2022; 11:3387. [PMID: 36501426 PMCID: PMC9740217 DOI: 10.3390/plants11233387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Acer tegmentosum, a deciduous tree belonging to Aceraceae, has been used in traditional oriental medicine for treating hepatic disorders, such as hepatitis, cirrhosis, and liver cancer. We evaluated the estrogen-like effects of A. tegmentosum using an estrogen receptor (ER)-positive breast cancer cell line, namely MCF-7, to identify potential phytoestrogens and found that an aqueous extract of A. tegmentosum promoted cell proliferation in MCF-7 cells. Five phenolic compounds (1-5) were separated and identified from the active fraction using bioassay-guided fractionation of crude A. tegmentosum extract and phytochemical analysis. The chemical structures of the compounds were characterized as vanillic acid (1), 4-hydroxy-benzoic acid (2), syringic acid (3), isoscopoletin (4), and (E)-ferulic acid (5) based on the analysis of their nuclear magnetic resonance spectra and liquid chromatography-mass spectrometry data. All five compounds were evaluated using an E-screen assay for their estrogen-like effects on MCF-7 cells. Among the tested compounds, only 4-hydroxy-benzoic acid (2) promoted the proliferation of MCF-7 cells, which was mitigated by the ER antagonist, ICI 182,780. The mechanism underlying the estrogen-like effect of 4-hydroxy-benzoic acid (2) was evaluated via western blotting analysis to determine the expression levels of extracellular signal-regulated kinase (ERK), phosphoinositide 3-kinase (PI3K), serine/threonine kinase (AKT), and ERα. Our results demonstrated that 4-hydroxy-benzoic acid (2) induced the increase in the protein expression levels of p-ERK, p-AKT, p-PI3K, and p-Erα, concentration dependently. Collectively, these experimental results suggest that 4-hydroxy-benzoic acid (2) is responsible for the estrogen-like effects of A. tegmentosum and may potentially aid in the control of estrogenic effects during menopause.
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Affiliation(s)
- Quynh Nhu Nguyen
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Baolo Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Joo-Hyun Hong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yoon Seo Jang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Da Eun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Lee D, Ko Y, Pang C, Ko YJ, Choi YK, Kim KH, Kang KS. Estrogenic Activity of Mycoestrogen (3 β,5 α,22 E)-Ergost-22-en-3-ol via Estrogen Receptor α-Dependent Signaling Pathways in MCF-7 Cells. Molecules 2021; 27:36. [PMID: 35011267 PMCID: PMC8746416 DOI: 10.3390/molecules27010036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 01/27/2023] Open
Abstract
Armillariella tabescens (Scop.) Sing., a mushroom of the family Tricholomataceae, has been used in traditional oriental medicine to treat cholecystitis, improve bile secretion, and regulate bile-duct pressure. The present study evaluated the estrogen-like effects of A. tabescens using a cell-proliferation assay in an estrogen-receptor-positive breast cancer cell line (MCF-7). We found that the methanol extract of A. tabescens fruiting bodies promoted cell proliferation in MCF-7 cells. Using bioassay-guided fractionation of the methanol extract and chemical investigation, we isolated and identified four steroids and four fatty acids from the active fraction. All eight compounds were evaluated by E-screen assay for their estrogen-like effects in MCF-7 cells. Among the tested isolates, only (3β,5α,22E)-ergost-22-en-3-ol promoted cell proliferation in MCF-7 cells; this effect was mitigated by the ER antagonist, ICI 182,780. The mechanism underlying the estrogen-like effect of (3β,5α,22E)-ergost-22-en-3-ol was evaluated using Western blot analysis to detect the expression of extracellular signal-regulated kinase (ERK), phosphatidylinositol 3-kinase (PI3K), Akt, and estrogen receptor α (ERα). We found that (3β,5α,22E)-ergost-22-en-3-ol induced an increase in phosphorylation of ERK, PI3K, Akt, and ERα. Together, these experimental results suggest that (3β,5α,22E)-ergost-22-en-3-ol is responsible for the estrogen-like effects of A. tabescens and may potentially aid control of estrogenic activity in menopause.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
| | - Yuri Ko
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA;
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea;
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Gwanak-gu, Seoul 08826, Korea;
| | - You-Kyoung Choi
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
| | - Ki Hyun Kim
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA;
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (Y.-K.C.)
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Gharahdaghi N, Phillips BE, Szewczyk NJ, Smith K, Wilkinson DJ, Atherton PJ. Links Between Testosterone, Oestrogen, and the Growth Hormone/Insulin-Like Growth Factor Axis and Resistance Exercise Muscle Adaptations. Front Physiol 2020; 11:621226. [PMID: 33519525 PMCID: PMC7844366 DOI: 10.3389/fphys.2020.621226] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 12/18/2020] [Indexed: 12/13/2022] Open
Abstract
Maintenance of skeletal muscle mass throughout the life course is key for the regulation of health, with physical activity a critical component of this, in part, due to its influence upon key hormones such as testosterone, estrogen, growth hormone (GH), and insulin-like growth factor (IGF). Despite the importance of these hormones for the regulation of skeletal muscle mass in response to different types of exercise, their interaction with the processes controlling muscle mass remain unclear. This review presents evidence on the importance of these hormones in the regulation of skeletal muscle mass and their responses, and involvement in muscle adaptation to resistance exercise. Highlighting the key role testosterone plays as a primary anabolic hormone in muscle adaptation following exercise training, through its interaction with anabolic signaling pathways and other hormones via the androgen receptor (AR), this review also describes the potential importance of fluctuations in other hormones such as GH and IGF-1 in concert with dietary amino acid availability; and the role of estrogen, under the influence of the menstrual cycle and menopause, being especially important in adaptive exercise responses in women. Finally, the downstream mechanisms by which these hormones impact regulation of muscle protein turnover (synthesis and breakdown), and thus muscle mass are discussed. Advances in our understanding of hormones that impact protein turnover throughout life offers great relevance, not just for athletes, but also for the general and clinical populations alike.
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Son HJ, Sohn SH, Kim N, Lee HN, Lee SM, Nam RH, Park JH, Song CH, Shin E, Na HY, Kim JS, Lee DH, Surh YJ. Effect of Estradiol in an Azoxymethane/Dextran Sulfate Sodium-Treated Mouse Model of Colorectal Cancer: Implication for Sex Difference in Colorectal Cancer Development. Cancer Res Treat 2018; 51:632-648. [PMID: 30064198 PMCID: PMC6473282 DOI: 10.4143/crt.2018.060] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 07/20/2018] [Indexed: 02/07/2023] Open
Abstract
Purpose This study demonstrates that estradiol downregulates inflammation and inhibits colorectal cancer (CRC) development in azoxymethane/dextran sulfate sodium (AOM/DSS) mouse model. Materials and Methods AOM/DSS-treated male and female mice were sacrificed at weeks 2, 10, and 16, to assess estrogen effects on colitis and carcinogenesis. Macroscopic and histologic severity of colitis and Western blot and quantitative real-time polymerase chain reaction were evaluated, to measure inflammatory mediators and cytokines. Results Compared with AOM/DSS-treated male mice (M-AOM/DSS group), AOM/DSS-treated male mice with estradiol administration (M-AOM/DSS+estr group) displayed at week 2 significantly decreased severity of colitis. At weeks 10 and 16, AOM/DSS-treated female mice (F-AOM/DSS group) and the M-AOM/DSS+estr group showed significantly lower tumor multiplicity compared with the M-AOM/DSS group. At week 2, F-AOM/DSS group had a lower level of nuclear factor-κB (NF-κB) expression and higher level of nuclear factor erythroid 2-related factor 2 (Nrf2) expression, compared to the M-AOM/DSS group. At week 2, expression levels of NF-κB and its related mediators decreased in the M-AOM/DSS+estr group, while levels of Nrf2 and Nrf2-related anti-oxidant enzymes increased. In addition, estradiol significantly increased Nod-like receptor protein 3 (NLRP3) inflammasome expressions in AOM/DSS-treated male mice. In contrast, at weeks 10 and 16, Nrf2 and its-related anti-oxidant enzymes and NLRP3 inflammasome were highly expressed in M-AOM/DSS group and in F-AOM/DSS group, who developed cancer. Conclusion The data suggest that estradiol inhibits the initiation of CRC by regulating Nrf2-related pathways. Moreover, these imply the dual role of Nrf2 and NLRP3 inflammasome, including promotion of tumor progression upon tumor initiation.
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Affiliation(s)
- Hee Jin Son
- Seoul National University College of Medicine, Seoul, Korea
| | - Sung Hwa Sohn
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Nayoung Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Ha-Na Lee
- Tumor Microenvironment Global Core Research Center, Seoul National University College of Pharmacy, Seoul, Korea
| | - Sun Min Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ryoung Hee Nam
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ji Hyun Park
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Chin-Hee Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Eun Shin
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hee Young Na
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Joo Sung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Ho Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center, Seoul National University College of Pharmacy, Seoul, Korea
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DNMT1 mediated promoter methylation of GNAO1 in hepatoma carcinoma cells. Gene 2018; 665:67-73. [DOI: 10.1016/j.gene.2018.04.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/20/2018] [Accepted: 04/26/2018] [Indexed: 02/07/2023]
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Zhang Z, Yan C, Li B, Li L. Potential biological functions of microvesicles derived from adenoid cystic carcinoma. Oncol Lett 2018; 15:7900-7908. [PMID: 29725477 PMCID: PMC5920383 DOI: 10.3892/ol.2018.8296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/28/2017] [Indexed: 02/05/2023] Open
Abstract
Microvesicles (MVs) are secreted by multiple types of tumor cell and are involved in tumor progression and metastasis. The aim of the present study was to explore the effects of MVs derived from salivary adenoid cystic carcinoma (SACC) and to investigate their potential involvement in the pathogenesis of perineural invasion of SACC. MVs were isolated from ACCs cells, and differential gene expression profiles of these MVs were compared with their donor cells to speculate on their biological functions. Several candidate genes were validated using reverse transcription-quantitative polymerase chain reaction analysis. The effects of ACCs MVs on rat Schwann cells (RSC96 cells), which are the principal glia of the peripheral nervous system, were then evaluated by phospho-antibody array performed on RSC96 cells transduced with ACCs MVs. The results indicated that ACCs cells may produce MVs. Microarray-based expression profiles between ACCs cells and their MVs identified 1,355 genes involved in cell adhesion, development and the regulation of apoptosis. In addition, the extracellular signal-regulated protein kinase signal pathway in RSC96 cells may be induced by ACCs-derived MVs. These results may help to elucidate the mechanisms underlying perineural invasion in SACC, and to determine a promising anti-tumor biological therapeutic target.
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Affiliation(s)
- Zhuoyuan Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Chaoran Yan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Bo Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Longjiang Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Head and Neck Cancer Surgery, West China School of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Jin M, Yu B, Zhang W, Zhang W, Xiao Z, Mao Z, Lai Y, Lin D, Ma Q, Pan E, Zhang Y, Yu Y. Toll-like receptor 2-mediated MAPKs and NF-κB activation requires the GNAO1-dependent pathway in human mast cells. Integr Biol (Camb) 2016; 8:968-75. [PMID: 27515449 DOI: 10.1039/c6ib00097e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Toll-like receptors (TLRs) expressed on mast cells are essential for effective host defense against a wide variety of pathogens. Previous studies have demonstrated that both TLR2 agonists Pam3CSK4 and PGN stimulated IL-8 release in human mast cells. To determine the molecular basis for this phenomenon, we utilized human mast cell line LAD2 cells. We found that only the release of IL-8 stimulated by Pam3CSK4 was TLR2-mediated, which was confirmed by specific TLR2 shRNA. Heterotrimeric G proteins have been previously implicated in TLR signaling in macrophages and monocytes. In the current study, we showed that PamCSK4 induced the activation of MAPKs, NF-κB, PI3K-Akt and Ca(2+)-calcineurin-NFAT signaling cascades in LAD2 cells. Go proteins were required for the activation of MAPKs and NF-κB in TLR2 stimulated LAD2 cells. Therefore, the genetic depletion of Gαo proteins also led to the reduction of the release of IL-8 in LAD2 cells. Taken together, the data presented here suggest that TLR2 activation in human mast cells promotes the release of inflammatory mediators via distinct signaling pathways that partially depend on the action of Go proteins.
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Affiliation(s)
- Meiling Jin
- Center for Diabetes, Obesity and Metabolism, Department of Physiology, Shenzhen University Health Science Center, Shenzhen, Guangdong province 518060, China.
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Yu Y, Huang Z, Mao Z, Zhang Y, Jin M, Chen W, Zhang W, Yu B, Zhang W, Alaster Lau HY. Go is required for the release of IL-8 and TNF-α, but not degranulation in human mast cells. Eur J Pharmacol 2016; 780:115-21. [PMID: 27025291 DOI: 10.1016/j.ejphar.2016.03.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/13/2016] [Accepted: 03/23/2016] [Indexed: 01/16/2023]
Abstract
Mast cells activated by IgE-dependent and -independent mechanisms play important roles in innate and acquired immune responses. Activation of pertussis toxin (PTX)-sensitive Gi/o proteins is the key step in mast cell degranulation and release of de novo synthesized inflammatory mediators through IgE-independent mechanism. However, the roles of Gi and Go proteins in mast cells activation have not yet been differentiated. In the current study, the functional roles of Go proteins in the activities of LAD2 cells, a human mast cell line, are identified. Knockdown of Gαo expression significantly inhibited the synthesis of IL-8 and TNF-α from substance P activated LAD2 cells but demonstrated no effect on degranulation. This effect was associated with the activation of Erk and JNK/MAPKs signaling, whereas PI3K-Akt, calcium mobilization and NFAT translocation remained unchanged. These results suggest that Gi and Go proteins differentially regulate human mast cells activities through activating distinct signaling cascades.
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Affiliation(s)
- Yangyang Yu
- School of medicine, Shenzhen University, Shenzhen, Guangdong Province 518060, China
| | - Zhenhe Huang
- Department of Geriatrics, The Sixth People's Hospital of Shenzhen, Guangdong Province, China
| | - Zhuo Mao
- School of medicine, Shenzhen University, Shenzhen, Guangdong Province 518060, China
| | - Yarui Zhang
- Shenzhen Key Laboratory for Translational Medicine of Dermatology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong Province, China
| | - Meiling Jin
- School of medicine, Shenzhen University, Shenzhen, Guangdong Province 518060, China
| | - Wenwen Chen
- School of medicine, Shenzhen University, Shenzhen, Guangdong Province 518060, China
| | - Wei Zhang
- Shenzhen Key Laboratory for Translational Medicine of Dermatology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong Province, China
| | - Bo Yu
- Department of Dermatology, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China.
| | - Weizhen Zhang
- School of medicine, Shenzhen University, Shenzhen, Guangdong Province 518060, China.
| | - Hang Yung Alaster Lau
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
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Rasheed SAK, Teo CR, Beillard EJ, Voorhoeve PM, Zhou W, Ghosh S, Casey PJ. MicroRNA-31 controls G protein alpha-13 (GNA13) expression and cell invasion in breast cancer cells. Mol Cancer 2015; 14:67. [PMID: 25889182 PMCID: PMC4379695 DOI: 10.1186/s12943-015-0337-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 03/10/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Gα13 (GNA13) is the α subunit of a heterotrimeric G protein that mediates signaling through specific G protein-coupled receptors (GPCRs). Our recent study showed that control of GNA13 expression by specific microRNAs (miRNAs or miRs) is important for prostate cancer cell invasion. However, little is known about the control of GNA13 expression in breast cancers. This project was carried out to determine (i) whether enhanced GNA13 expression is important for breast cancer cell invasion, and (ii) if so, the mechanism of deregulation of GNA13 expression in breast cancers. METHODS To determine the probable miRNAs regulating GNA13, online miRNA target prediction tool Targetscan and Luciferase assays with GNA13-3'-UTR were used. Effect of miRNAs on GNA13 mRNA, protein and invasion was studied using RT-PCR, western blotting and in vitro Boyden chamber assay respectively. Cell proliferation was done using MTT assays. RESULTS Overexpression of GNA13 in MCF-10a cells induced invasion, whereas knockdown of GNA13 expression in MDA-MB-231 cells inhibited invasion. Expression analysis of miRNAs predicted to bind the 3'-UTR of GNA13 revealed that miR-31 exhibited an inverse correlation to GNA13 protein expression in breast cancer cells. Ectopic expression of miR-31 in MDA-MB-231 cells significantly reduced GNA13 mRNA and protein levels, as well as GNA13-3'-UTR-reporter activity. Conversely, blocking miR-31 activity in MCF-10a cells induced GNA13 mRNA, protein and 3'-UTR reporter activity. Further, expression of miR-31 significantly inhibited MDA-MB-231 cell invasion, and this effect was partly rescued by ectopic expression of GNA13 in these cells. Examination of 48 human breast cancer tissues revealed that GNA13 mRNA levels were inversely correlated to miR-31 levels. CONCLUSIONS These data provide strong evidence that GNA13 expression in breast cancer cells is regulated by post-transcriptional mechanisms involving miR-31. Additionally our data shows that miR-31 regulates breast cancer cell invasion partially via targeting GNA13 expression in breast cancer cells. Loss of miR-31 expression and increased GNA13 expression could be used as biomarkers of breast cancer progression.
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Affiliation(s)
- Suhail Ahmed Kabeer Rasheed
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
| | - Cui Rong Teo
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
| | - Emmanuel Jean Beillard
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
| | - P Mathijs Voorhoeve
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
| | - Wei Zhou
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
| | - Sujoy Ghosh
- Centre for Computational Biology & Program in Cardiovascular and Metabolic Disorders, Duke-NUS Graduate Medical School, 169857, Singapore, Singapore.
| | - Patrick J Casey
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, 8 College Road, 169857, Singapore, Singapore.
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Bennesch MA, Picard D. Minireview: Tipping the balance: ligand-independent activation of steroid receptors. Mol Endocrinol 2015; 29:349-63. [PMID: 25625619 DOI: 10.1210/me.2014-1315] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Steroid receptors are prototypical ligand-dependent transcription factors and a textbook example for allosteric regulation. According to this canonical model, binding of cognate steroid is an absolute requirement for transcriptional activation. Remarkably, the simple one ligand-one receptor model could not be farther from the truth. Steroid receptors, notably the sex steroid receptors, can receive multiple inputs. Activation of steroid receptors by other signals, working through their own signaling pathways, in the absence of the cognate steroids, represents the most extreme form of signaling cross talk. Compared with cognate steroids, ligand-independent activation pathways produce similar but not identical outputs. Here we review the phenomena and discuss what is known about the underlying molecular mechanisms and the biological significance. We hypothesize that steroid receptors may have evolved to be trigger happy. In addition to their cognate steroids, many posttranslational modifications and interactors, modulated by other signals, may be able to tip the balance.
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Affiliation(s)
- Marcela A Bennesch
- Département de Biologie Cellulaire, Université de Genève, Sciences III, CH-1211 Genève 4, Switzerland
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12
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Retinoids and breast cancer: from basic studies to the clinic and back again. Cancer Treat Rev 2014; 40:739-49. [PMID: 24480385 DOI: 10.1016/j.ctrv.2014.01.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 11/23/2022]
Abstract
All-trans retinoic acid (ATRA) is the most important active metabolite of vitamin A controlling segmentation in the developing organism and the homeostasis of various tissues in the adult. ATRA as well as natural and synthetic derivatives, collectively known as retinoids, are also promising agents in the treatment and chemoprevention of different types of neoplasia including breast cancer. The major aim of the present article is to review the basic knowledge acquired on the anti-tumor activity of classic retinoids, like ATRA, in mammary tumors, focusing on the underlying cellular and molecular mechanisms and the determinants of retinoid sensitivity/resistance. In the first part, an analysis of the large number of pre-clinical studies available is provided, stressing the point that this has resulted in a limited number of clinical trials. This is followed by an overview of the knowledge acquired on the role played by the retinoid nuclear receptors in the anti-tumor responses triggered by retinoids. The body of the article emphasizes the potential of ATRA and derivatives in modulating and in being influenced by some of the most relevant cellular pathways involved in the growth and progression of breast cancer. We review the studies centering on the cross-talk between retinoids and some of the growth-factor pathways which control the homeostasis of the mammary tumor cell. In addition, we consider the cross-talk with relevant intra-cellular second messenger pathways. The information provided lays the foundation for the development of rational and retinoid-based therapeutic strategies to be used for the management of breast cancer.
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Liu Z, Zhang J, Wu L, Liu J, Zhang M. Overexpression of GNAO1 correlates with poor prognosis in patients with gastric cancer and plays a role in gastric cancer cell proliferation and apoptosis. Int J Mol Med 2013; 33:589-96. [PMID: 24366063 DOI: 10.3892/ijmm.2013.1598] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 12/11/2013] [Indexed: 11/06/2022] Open
Abstract
Guanine nucleotide-binding protein (G protein), alpha activating activity polypeptide O (GNAO1) encodes an alpha subunit of the heterotrimeric guanine nucleotide-binding proteins (Gαo), which plays a significant role in the development of various types of cancer, including breast cancer and hepatocellular carcinoma. However, its role in gastric cancer (GC) has not yet been elucidated. In the current study, the expression of Gαo was analyzed by immunohistochemistry in paraffin-embedded tissue sections from 70 patients with GC and its cellular role was examined by small interfering RNA (siRNA)-mediated downregulation. The overexpression of GNAO1 (scores of 2 or 4) was observed in 44 of the 70 patients with GC (62.9%) and the expression of Gαo significantly correlated with the overall survival of the patients with GC after surgery. The median survival rate of patients with a negative or positive expression of Gαo was 61 or 27 months, respectively (P=0.033). The silencing of GNAO1 in GC cells by RNA interference markedly inhibited the proliferation of GC cells and promoted apoptosis by increasing the accumulation of the pro-apoptotic proteins, Puma and Bim, possibly mediated by extracellular signal-regulated kinase 1 and 2 (ERK1/2). This further confirmed the clinical significance of GNAO1, which was overexpressed in GC tissues. To the best of our knowledge, the present study is the first to demonstrate that GNAO1 is overexpressed in GC and that its overexpression correlates with poor prognosis, as it promotes GC cell viability.
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Affiliation(s)
- Zhen Liu
- Department of Digestive Diseases, Southeast Hospital, Xiamen University, Zhangzhou, Fujian, P.R. China
| | - Jun Zhang
- Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, P.R. China
| | - Lijun Wu
- Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, P.R. China
| | - Jie Liu
- Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, P.R. China
| | - Mingqing Zhang
- Department of Digestive Diseases, Southeast Hospital, Xiamen University, Zhangzhou, Fujian, P.R. China
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BASUALTO-ALARCÓN CARLA, JORQUERA GONZALO, ALTAMIRANO FRANCISCO, JAIMOVICH ENRIQUE, ESTRADA MANUEL. Testosterone Signals through mTOR and Androgen Receptor to Induce Muscle Hypertrophy. Med Sci Sports Exerc 2013; 45:1712-20. [DOI: 10.1249/mss.0b013e31828cf5f3] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Antoon JW, Nitzchke AM, Martin EC, Rhodes LV, Nam S, Wadsworth S, Salvo VA, Elliott S, Collins-Burow B, Nephew KP, Burow ME. Inhibition of p38 mitogen-activated protein kinase alters microRNA expression and reverses epithelial-to-mesenchymal transition. Int J Oncol 2013; 42:1139-50. [PMID: 23403951 PMCID: PMC3622654 DOI: 10.3892/ijo.2013.1814] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 09/21/2012] [Indexed: 12/26/2022] Open
Abstract
Acquired chemoresistance and epithelial-to-mesenchymal transition (EMT) are hallmarks of cancer progression and of increasing clinical relevance. We investigated the role of miRNA and p38 mitogen-activated protein kinase (MAPK) signaling in the progression of breast cancer to a drug-resistant and mesenchymal phenotype. We demonstrate that acquired death receptor resistance results in increased hormone-independent tumorigenesis compared to hormone-sensitive parental cells. Utilizing global miRNA gene expression profiling, we identified miRNA alterations associated with the development of death receptor resistance and EMT progression. We further investigated the role of p38 MAPK in this process, showing dose-dependent inactivation of p38 by its inhibitor RWJ67657 and decreased downstream ATF and NF-κB signaling. Pharmacological inhibition of p38 also decreased chemoresistant cancer tumor growth in xenograft animal models. Interestingly, inhibition of p38 partially reversed the EMT changes found in this cell system, as illustrated by decreased gene expression of the EMT markers Twist, Snail, Slug and ZEB and protein and mRNA levels of Twist, a known EMT promoter, concomitant with decreased N-cadherin protein. RWJ67657 treatment also altered the expression of several miRNAs known to promote therapeutic resistance, including miR-200, miR-303, miR-302, miR-199 and miR-328. Taken together, our results demonstrate the roles of multiple microRNAs and p38 signaling in the progression of cancer and demonstrate the therapeutic potential of targeting the p38 MAPK pathway for reversing EMT in an advanced tumor phenotype.
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Affiliation(s)
- James W Antoon
- Department of Medicine, Section of Hematology and Medical Oncology, Tulane University School of Medicine, New Orleans, LA 70112, USA
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Collins-Burow BM, Antoon JW, Frigo DE, Elliott S, Weldon CB, Boue SM, Beckman BS, Curiel TJ, Alam J, McLachlan JA, Burow ME. Antiestrogenic activity of flavonoid phytochemicals mediated via the c-Jun N-terminal protein kinase pathway. Cell-type specific regulation of estrogen receptor alpha. J Steroid Biochem Mol Biol 2012; 132:186-93. [PMID: 22634477 PMCID: PMC4083692 DOI: 10.1016/j.jsbmb.2012.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 05/12/2012] [Accepted: 05/14/2012] [Indexed: 12/14/2022]
Abstract
Flavonoid phytochemicals act as both agonists and antagonists of the human estrogen receptors (ERs). While a number of these compounds act by directly binding to the ER, certain phytochemicals, such as the flavonoid compounds chalcone and flavone, elicit antagonistic effects on estrogen signaling independent of direct receptor binding. Here we demonstrate both chalcone and flavone function as cell type-specific selective ER modulators. In MCF-7 breast carcinoma cells chalcone and flavone suppress ERα activity through stimulation of the stress-activated members of the mitogen-activated protein kinase (MAPK) family: c-Jun N-terminal kinase (JNK)1 and JNK2. The use of dominant-negative mutants of JNK1 or JNK2 in stable transfected cells established that the antiestrogenic effects of chalcone and flavone required intact JNK signaling. We further show that constitutive activation of the JNK pathway partially suppresses estrogen (E2)-mediated gene expression in breast, but not endometrial carcinoma cells. Our results demonstrate a role for stress-activated MAPKs in the cell type-specific regulation of ERα function.
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Affiliation(s)
- Bridgette M. Collins-Burow
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Center for Bioenvironmental Research at Tulane and Xavier Universities, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
| | - James W. Antoon
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
- Department of Pharmacology, New Orleans, Louisiana 70112
| | - Daniel E. Frigo
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX
| | - Steven Elliott
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
| | - Christopher B. Weldon
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
| | - Stephen M. Boue
- U. S. Department of Agriculture, Agricultural Research Service, Southern Regional Research Center, New Orleans, LA 70179
| | - Barbara S. Beckman
- Center for Bioenvironmental Research at Tulane and Xavier Universities, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
| | - Tyler J. Curiel
- Cancer Therapy & Research Center, University of Texas Health Science Center, San Antonio
| | - Jawed Alam
- Alton Ochsner Medical Foundation, Department of Molecular Genetics, New Orleans, Louisiana 70121
| | - John A. McLachlan
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Center for Bioenvironmental Research at Tulane and Xavier Universities, New Orleans, Louisiana 70112
| | - Matthew E. Burow
- Tulane University Medical Center, New Orleans, Louisiana 70112
- Center for Bioenvironmental Research at Tulane and Xavier Universities, New Orleans, Louisiana 70112
- Department of Medicine, Section of Hematology & Medical Oncology, New Orleans, Louisiana 70112
- To whom correspondence and requests for reprints should be addressed: Matthew E. Burow, Tulane University Health Sciences Center, Department of Medicine, Section of Hematology & Medical Oncology, 1430 Tulane Ave. SL-78, New Orleans, LA 70112, Phone: 504-988-6688, Fax: 504-988-5483,
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Antoon JW, Lai R, Struckhoff AP, Nitschke AM, Elliott S, Martin EC, Rhodes LV, Yoon NS, Salvo VA, Shan B, Beckman BS, Nephew KP, Burow ME. Altered death receptor signaling promotes epithelial-to-mesenchymal transition and acquired chemoresistance. Sci Rep 2012; 2:539. [PMID: 22844580 PMCID: PMC3406343 DOI: 10.1038/srep00539] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 06/18/2012] [Indexed: 11/09/2022] Open
Abstract
Altered death receptor signaling and resistance to subsequent apoptosis is an important clinical resistance mechanism. Here, we investigated the role of death receptor resistance in breast cancer progression. Resistance of the estrogen receptor alpha (ER)-positive, chemosensitive MCF7 breast cancer cell line to tumor necrosis factor (TNF) was associated with loss of ER expression and a multi-drug resistant phenotype. Changes in three major pathways were involved in this transition to a multidrug resistance phenotype: ER, Death Receptor and epithelial to mesenchymal transition (EMT). Resistant cells exhibited altered ER signaling, resulting in decreased ER target gene expression. The death receptor pathway was significantly altered, blocking extrinsic apoptosis and increasing NF-kappaB survival signaling. TNF resistance promoted EMT changes, resulting in a more aggressive phenotype. This first report identifying specific mechanisms underlying acquired resistance to TNF could lead to a better understanding of the progression of breast cancer in response to chemotherapy treatment.
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Affiliation(s)
- James W Antoon
- Departments of Pharmacology, Tulane University School of Medicine, Tulane Avenue, New Orleans, LA, USA
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Recent publications by ochsner authors. Ochsner J 2012; 12:396-401. [PMID: 23267272 PMCID: PMC3528163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
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