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Yang J, Li Y, Han X, Li T, Li D, Liu Q, Yan L, Li F, Pei X, Feng Y, Lin Z, Fu Z, Wang C, Sun Q, Li C. Targeting estrogen mediated CYP4F2/CYP4F11-20-HETE metabolic disorder decelerates tumorigenesis in ER+ breast cancer. Biochem Biophys Rep 2024; 38:101706. [PMID: 38646426 PMCID: PMC11033080 DOI: 10.1016/j.bbrep.2024.101706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 03/25/2024] [Accepted: 04/01/2024] [Indexed: 04/23/2024] Open
Abstract
Purpose As the most common subset of breast cancer (BC), estrogen receptor positive (ER+) BC accounting for 80% of cases, has become a global public health concern. The female hormone estrogen (E2) unequivocally drives ER + breast malignancies. The reasons that estrogen affects BC development has long been considered, yet further study remains to be conducted of the molecular events in the E2-estrogen receptor α (ERα) signaling pathway in ER + BC progression, especially lipid metabolism, so providing more options for tailored and individualized therapy. Our aim is to find out new targets and clinical biomarkers for ER + breast cancer treatment from the perspective of lipid metabolism. Methods Lipid metabolomics profiling was used to examine the membrane phospholipid stimulated by E2. Clinical BC samples were used to assess the association of CYP4F2, CYP4F11 expression with clinicopathological characteristics and patient outcomes. Some inhibitors of main enzymes in AA metabolism were used combined with E2 to assess roles of CYP4F2/CYP4F11 in the progression of ER + BC. CYP4F2, CYP4F11 overexpression and knockdown BC cell lines were employed to examine the effects of CYP4F2, CYP4F11 on cellular proliferation, apoptosis and tumor growth. Western blotting, qPCR, Immunohistochemical staining and flow cytometry were also conducted to determine the underlying mechanisms related to CYP4F2, CYP4F11 function. Results The activation of the CYP450 signaling pathway in arachidonic acid metabolism contributed to ER + BC tumorigenesis. In ER + BC, CYP4F2 and CYP4F11 overexpression induced by E2 could promote cancer cell proliferation and resistance to apoptosis by producing the metabolite 20-HETE and activating the antiapoptotic protein Bcl-2. CYP4F2 and CYP4F11 elevation correlates with poorer overall survival and disease-free survival in ER + BC patients. Conclusion CYP4F2, CYP4F11 and their metabolite 20-HETE could serve as effective prognostic markers and attractive therapeutic targets for novel anticancer drug development about ER + BC.
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Affiliation(s)
- Juan Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Yin Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Xiao Han
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Tianjiao Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Ding Li
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, PR China
| | - Qiao Liu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Lizhong Yan
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Fei Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Xiaolin Pei
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Ya Feng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Zhoujun Lin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
| | - Zhenkun Fu
- Department of Immunology & Wu Lien-Teh Institute & Heilongjiang Provincial Key Laboratory for Infection and Immunity, Harbin Medical University & Heilongjiang Academy of Medical Science, Harbin, 150081, PR China
| | - Changjun Wang
- Department of Breast Surgery, Peking Union Medical College Hospital, Beijing, 100730, PR China
| | - Qiang Sun
- Department of Breast Surgery, Peking Union Medical College Hospital, Beijing, 100730, PR China
| | - Chenggang Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, PR China
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Feng D, Wang J, Xiao Y, Wu R, Li D, Tuo Z, Yu Q, Ye L, MIYAMOTO A, Yoo KH, Wei W, Ye X, Zhang C, Han P. SKA3 targeted therapies in cancer precision surgery: bridging bench discoveries to clinical applications - review article. Int J Surg 2024; 110:2323-2337. [PMID: 38241327 PMCID: PMC11020031 DOI: 10.1097/js9.0000000000001123] [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: 09/11/2023] [Accepted: 01/09/2024] [Indexed: 01/21/2024]
Abstract
Spindle and kinetochore-associated complex subunit 3 (SKA3) is a microtubule-binding subcomplex of the outer kinetochore, which plays a vital role in proper chromosomal segregation and cell division. Recently, SKA3 have been demonstrated its oncogenic role of tumorigenesis and development in cancers. In this review, the authors comprehensively deciphered SKA3 in human cancer from various aspects, including bibliometrics, pan-cancer analysis, and narrative summary. The authors also provided the top 10 predicted drugs targeting SKA3. The authors proposed that SKA3 was a potential target and brought new therapeutic opportunities for cancer patients.
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Affiliation(s)
- Dechao Feng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou
| | - Jie Wang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
| | - Yuhan Xiao
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
| | - Ruicheng Wu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
| | - Dengxiong Li
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
| | - Zhouting Tuo
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei
| | - Qingxin Yu
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo City, Zhejiang Province
| | - Luxia Ye
- Department of Public Research Platform, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, People’s Republic of China
| | - Akira MIYAMOTO
- Department of Rehabilitation, West Kyushu University, Japan
| | - Koo Han Yoo
- Department of Urology, Kyung Hee University, South Korea
| | - Wuran Wei
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
| | - Xing Ye
- Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Chi Zhang
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou
| | - Ping Han
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu
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3
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Fard SS, Holz MK. Regulation of mRNA translation by estrogen receptor in breast cancer. Steroids 2023; 200:109316. [PMID: 37806603 PMCID: PMC10841406 DOI: 10.1016/j.steroids.2023.109316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/15/2023] [Accepted: 09/28/2023] [Indexed: 10/10/2023]
Abstract
Breast cancer is one of the leading causes of cancer-related fatalities and the most often diagnosed malignancy in women globally. Dysregulation of sex hormone signaling pathways mediated by the estrogen receptor (ER) in breast cancer is well characterized. Although ER is known to promote cell growth and survival by altering gene transcription, recent research suggests that its effects in cancers are also mediated through dysregulation of protein synthesis. This implies that ER can coordinately affect gene expression through both translational and transcriptional pathways, leading to the development of malignancy. In this review, we will cover the current understanding of how the ER controls mRNA translation in breast cancer and discuss any potential clinical implications of this phenomenon.
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Affiliation(s)
- Shahrzad S Fard
- Department of Cell Biology and Anatomy, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, NY, USA
| | - Marina K Holz
- Department of Cell Biology and Anatomy, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, NY, USA; Department of Biochemistry and Molecular Biology, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, NY, USA.
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4
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Raheem F, Karikalan SA, Batalini F, El Masry A, Mina L. Metastatic ER+ Breast Cancer: Mechanisms of Resistance and Future Therapeutic Approaches. Int J Mol Sci 2023; 24:16198. [PMID: 38003387 PMCID: PMC10671474 DOI: 10.3390/ijms242216198] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/05/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Endocrine therapy is the main treatment for hormone receptor-positive (HR+) breast cancer. However, advanced tumors develop resistance to endocrine therapy, rendering it ineffective as the disease progresses. There are several molecular mechanisms of primary and secondary endocrine resistance. Resistance can develop due to either alteration of the estrogen receptor pathway (e.g., ESR1 mutations) or upstream growth factors signaling pathways (e.g., PI3K/Akt/mTOR pathway). Despite progress in the development of molecularly targeted anticancer therapies, the emergence of resistance remains a major limitation and an area of unmet need. In this article, we review the mechanisms of acquired endocrine resistance in HR+ advanced breast cancer and discuss current and future investigational therapeutic approaches.
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Affiliation(s)
| | | | | | - Aya El Masry
- Phoenix Country Day School, Paradise Valley, AZ 85253, USA
| | - Lida Mina
- Mayo Clinic, Phoenix, AZ 85054, USA; (F.R.)
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Moreau-Bachelard C, Robert M, Gourmelon C, Bourbouloux E, Patsouris A, Frenel JS, Campone M. Evaluating everolimus for the treatment of breast cancer. Expert Opin Pharmacother 2023:1-7. [PMID: 37183684 DOI: 10.1080/14656566.2023.2214677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
INTRODUCTION Everolimus is an oral drug that inhibits mTOR with immunosuppressive and antiproliferative characteristics. It is commonly used in association with exemestane in hormone receptor (HR)-positive advanced breast cancer (ABC). AREAS COVERED The current review summarizes the publications relating to everolimus from clinical research in breast cancer. Everolimus showed treatment efficacy and an acceptable safety tolerance with prevention of side effects in Phase II/III studies. BOLERO-2 study showed a progression-free survival improvement in patients with HR-positive ABC previously treated with aromatase inhibitors (AI) and leading to its acceptance in this indication. The absence of a post CDK4/6 inhibitor (CDK4/6i.) study and the arrival of new drugs may raise questions about its current place in the therapeutic strategy. EXPERT OPINION Everolimus is relevant in the management of HR-positive ABC. Because of its efficacy, acceptable tolerability and the absence of drugs that have shown a greater benefit, it remains a second-line treatment option in HR-positive, HER2 negative (score 0) patients without BRCA mutation or visceral crisis and can be discuss with fulvestrant in second line after CDK4-6i. It is likely that within 5 years this treatment will be replaced in second line HR-positive breast cancer by new emerging treatments: drug-conjugated antibodies, tyrosine kinase inhibitors or immunotherapy in combination with chemotherapy.
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Affiliation(s)
| | - Marie Robert
- ICO Centre René Gauducheau, Oncology, Nantes, France
| | | | | | | | | | - Mario Campone
- ICO Centre René Gauducheau, Oncology, Nantes, France
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6
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Vaklavas C, Stringer-Reasor EM, Elkhanany AM, Ryan KJ, Li Y, Theuer CP, Acosta EP, Wei S, Yang ES, Grizzle WE, Forero-Torres A. A phase I/II study of preoperative letrozole, everolimus, and carotuximab in stage 2 and 3 hormone receptor-positive and Her2-negative breast cancer. Breast Cancer Res Treat 2023; 198:217-229. [PMID: 36735117 PMCID: PMC10020303 DOI: 10.1007/s10549-023-06864-9] [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: 10/17/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023]
Abstract
PURPOSE In nonmetastatic hormone receptor-positive and Her2-negative breast cancer, preoperative endocrine therapies can yield outcomes similar with chemotherapy. We evaluated the tolerability and preliminary antitumor activity of preoperative letrozole, everolimus, and carotuximab, a monoclonal antibody targeting endoglin, in nonmetastatic breast cancer. METHODS Eligible patients had newly diagnosed, stage 2 or 3, hormone receptor-positive and Her2/neu-negative breast cancer. Patients received escalating doses of everolimus; the dose of letrozole and carotuximab were fixed at 2.5 mg PO daily and 15 mg/kg intravenously every 2 weeks, respectively. The primary objective was to determine the safety and tolerability of the combination. Secondary objectives included pharmacokinetic and pharmacodynamic studies and assessments of antitumor activity. RESULTS Fifteen patients enrolled. The recommended phase 2 dose of everolimus in combination with letrozole and carotuximab was 10 mg PO daily. The most frequent adverse events were headache (67%), fatigue (47%), facial flushing and swelling (47%), gingival hemorrhage (40%), epistaxis (33%), nausea and vomiting (27%). Headache constituted a dose-limiting toxicity. At least two signs of mucocutaneous telangiectasia developed in 92% of patients. Carotuximab accumulated in the extravascular space and accelerated the biodistribution and clearance of everolimus. All patients had residual disease. Gene expression analyses were consistent with downregulation of genes involved in proliferation and DNA repair. Among 6 patients with luminal B breast cancer, 5 converted to luminal A after one cycle of therapy. CONCLUSION Letrozole, everolimus, and carotuximab were tolerated in combination at their single-agent doses. Pharmacokinetic studies revealed an interaction between everolimus and carotuximab. TRIAL REGISTRATION This trial is registered with ClinicalTrials.gov (Identifier: NCT02520063), first posted on August 11, 2015, and is active, not recruiting.
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Affiliation(s)
- Christos Vaklavas
- Huntsman Cancer Institute of the University of Utah, 2000 Circle of Hope, RS2509, Salt Lake, UT, 84112, USA.
- University of Alabama at Birmingham, Birmingham, AL, USA.
| | | | | | - Kevin J Ryan
- University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yufeng Li
- University of Alabama at Birmingham, Birmingham, AL, USA
| | | | | | - Shi Wei
- University of Alabama at Birmingham, Birmingham, AL, USA
| | - Eddy S Yang
- University of Alabama at Birmingham, Birmingham, AL, USA
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7
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Kundu N, Holz MK. Lymphangioleiomyomatosis: a metastatic lung disease. Am J Physiol Cell Physiol 2023; 324:C320-C326. [PMID: 36571446 PMCID: PMC9886342 DOI: 10.1152/ajpcell.00202.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 12/01/2022] [Accepted: 12/13/2022] [Indexed: 12/27/2022]
Abstract
Lymphangioleiomyomatosis (LAM) is a rare disease affecting women, caused by somatic mutations in the TSC1 or TSC2 genes, and driven by estrogen. Similar to many cancers, it is metastatic, primarily to the lung. Despite its monogenetic nature, like many cancers, LAM is a heterogeneous disease. The cellular constituents of LAM are very diverse, including mesenchymal, epithelial, endothelial, and immune cells. LAM is characterized by dysregulation of many cell signaling pathways, distinct populations of LAM cells, and a rich microenvironment, in which the immune system appears to play an important role. This review delineates the heterogeneity of LAM and focuses on the metastatic features of LAM, the deregulated signaling mechanisms and the tumor microenvironment. Understanding the tumor-host interaction in LAM may provide insights into the development of new therapeutic strategies, which could be combinatorial or superlative to Sirolimus, the current U.S. Food and Drug Administration-approved treatment.
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Affiliation(s)
- Nandini Kundu
- Department of Cell Biology and Anatomy, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, New York
| | - Marina K Holz
- Department of Cell Biology and Anatomy, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, New York
- Department of Biochemistry and Molecular Biology, Graduate School of Biomedical Sciences, New York Medical College, Valhalla, New York
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8
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Yang WS, Caliva MJ, Khadka VS, Tiirikainen M, Matter ML, Deng Y, Ramos JW. RSK1 and RSK2 serine/threonine kinases regulate different transcription programs in cancer. Front Cell Dev Biol 2023; 10:1015665. [PMID: 36684450 PMCID: PMC9845784 DOI: 10.3389/fcell.2022.1015665] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 12/12/2022] [Indexed: 01/06/2023] Open
Abstract
The 90 kDa ribosomal S6 kinases (RSKs) are serine threonine kinases comprising four isoforms. The isoforms can have overlapping functions in regulation of migration, invasion, proliferation, survival, and transcription in various cancer types. However, isoform specific differences in RSK1 versus RSK2 functions in gene regulation are not yet defined. Here, we delineate ribosomal S6 kinases isoform-specific transcriptional gene regulation by comparing transcription programs in RSK1 and RSK2 knockout cells using microarray analysis. Microarray analysis revealed significantly different mRNA expression patterns between RSK1 knockout and RSK2 knockout cell lines. Importantly some of these functions have not been previously recognized. Our analysis revealed RSK1 has specific roles in cell adhesion, cell cycle regulation and DNA replication and repair pathways, while RSK2 has specific roles in the immune response and interferon signaling pathways. We further validated that the identified gene sets significantly correlated with mRNA datasets from cancer patients. We examined the functional significance of the identified transcriptional programs using cell assays. In alignment with the microarray analysis, we found that RSK1 modulates the mRNA and protein expression of Fibronectin1, affecting cell adhesion and CDK2, affecting S-phase arrest in the cell cycle, and impairing DNA replication and repair. Under similar conditions, RSK2 showed increased ISG15 transcriptional expression, affecting the immune response pathway and cytokine expression. Collectively, our findings revealed the occurrence of RSK1 and RSK2 specific transcriptional regulation, defining separate functions of these closely related isoforms.
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Affiliation(s)
- Won Seok Yang
- Cancer Biology Program, University of Hawaii Cancer Center, University of Hawaii at Mānoa, Honolulu, HI, United States
| | - Maisel J. Caliva
- Cancer Biology Program, University of Hawaii Cancer Center, University of Hawaii at Mānoa, Honolulu, HI, United States
| | - Vedbar S. Khadka
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Maarit Tiirikainen
- Cancer Biology Program, University of Hawaii Cancer Center, University of Hawaii at Mānoa, Honolulu, HI, United States
| | - Michelle L. Matter
- Cancer Biology Program, University of Hawaii Cancer Center, University of Hawaii at Mānoa, Honolulu, HI, United States
| | - Youping Deng
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Joe W. Ramos
- Cancer Biology Program, University of Hawaii Cancer Center, University of Hawaii at Mānoa, Honolulu, HI, United States
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9
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p90RSK Regulates p53 Pathway by MDM2 Phosphorylation in Thyroid Tumors. Cancers (Basel) 2022; 15:cancers15010121. [PMID: 36612117 PMCID: PMC9817759 DOI: 10.3390/cancers15010121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/10/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
The expression level of the tumor suppressor p53 is controlled by the E3 ubiquitin ligase MDM2 with a regulatory feedback loop, which allows p53 to upregulate its inhibitor MDM2. In this manuscript we demonstrated that p90RSK binds and phosphorylates MDM2 on serine 166 both in vitro and in vivo by kinase assay, immunoblot, and co-immunoprecipitation assay; this phosphorylation increases the stability of MDM2 which in turn binds p53, ubiquitinating it and promoting its degradation by proteasome. A pharmacological inhibitor of p90RSK, BI-D1870, decreases MDM2 phosphorylation, and restores p53 function, which in turn transcriptionally increases the expression of cell cycle inhibitor p21 and of pro-apoptotic protein Bax and downregulates the anti-apoptotic protein Bcl-2, causing a block of cell proliferation, measured by a BrdU assay and growth curve, and promoting apoptosis, measured by a TUNEL assay. Finally, an immunohistochemistry evaluation of primary thyroid tumors, in which p90RSK is very active, confirms MDM2 stabilization mediated by p90RSK phosphorylation.
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10
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Habara M, Shimada M. Estrogen receptor α revised: Expression, structure, function, and stability. Bioessays 2022; 44:e2200148. [PMID: 36192154 DOI: 10.1002/bies.202200148] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/11/2022]
Abstract
Estrogen receptor α (ERα) is a ligand-dependent transcription factor that regulates the expression of estrogen-responsive genes. Approximately 70% of patients with breast cancer are ERα positive. Estrogen stimulates cancer cell proliferation and contributes to tumor progression. Endocrine therapies, which suppress the ERα signaling pathway, significantly improve the prognosis of patients with breast cancer. However, the development of de novo or acquired endocrine therapy resistance remains a barrier to breast cancer treatment. Therefore, understanding the regulatory mechanisms of ERα is essential to overcome the resistance to treatment. This review focuses on the regulation of ERα expression, including copy number variation, epigenetic regulation, transcriptional regulation, and stability, as well as functions from the point of view post-translational modifications.
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Affiliation(s)
- Makoto Habara
- Department of Veterinary Biochemistry, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
| | - Midori Shimada
- Department of Veterinary Biochemistry, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
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11
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Lv L, Yang S, Zhu Y, Zhai X, Li S, Tao X, Dong D. Relationship between metabolic reprogramming and drug resistance in breast cancer. Front Oncol 2022; 12:942064. [PMID: 36059650 PMCID: PMC9434120 DOI: 10.3389/fonc.2022.942064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Breast cancer is the leading cause of cancer death in women. At present, chemotherapy is the main method to treat breast cancer in addition to surgery and radiotherapy, but the process of chemotherapy is often accompanied by the development of drug resistance, which leads to a reduction in drug efficacy. Furthermore, mounting evidence indicates that drug resistance is caused by dysregulated cellular metabolism, and metabolic reprogramming, including enhanced glucose metabolism, fatty acid synthesis and glutamine metabolic rates, is one of the hallmarks of cancer. Changes in metabolism have been considered one of the most important causes of resistance to treatment, and knowledge of the mechanisms involved will help in identifying potential treatment deficiencies. To improve women’s survival outcomes, it is vital to elucidate the relationship between metabolic reprogramming and drug resistance in breast cancer. This review analyzes and investigates the reprogramming of metabolism and resistance to breast cancer therapy, and the results offer promise for novel targeted and cell-based therapies.
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Affiliation(s)
- Linlin Lv
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Shilei Yang
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yanna Zhu
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaohan Zhai
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shuai Li
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xufeng Tao
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Xufeng Tao, ; Deshi Dong,
| | - Deshi Dong
- Department of Pharmacy, First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Xufeng Tao, ; Deshi Dong,
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Sridhar J, Komati R, Kumar S. Targeting RPS6K1 for Refractory Breast Cancer Therapy. Breast Cancer 2022. [DOI: 10.36255/exon-publications-breast-cancer-rps6k1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Beyond controlling cell size: functional analyses of S6K in tumorigenesis. Cell Death Dis 2022; 13:646. [PMID: 35879299 PMCID: PMC9314331 DOI: 10.1038/s41419-022-05081-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 01/21/2023]
Abstract
As a substrate and major effector of the mammalian target of rapamycin complex 1 (mTORC1), the biological functions of ribosomal protein S6 kinase (S6K) have been canonically assigned for cell size control by facilitating mRNA transcription, splicing, and protein synthesis. However, accumulating evidence implies that diverse stimuli and upstream regulators modulate S6K kinase activity, leading to the activation of a plethora of downstream substrates for distinct pathobiological functions. Beyond controlling cell size, S6K simultaneously plays crucial roles in directing cell apoptosis, metabolism, and feedback regulation of its upstream signals. Thus, we comprehensively summarize the emerging upstream regulators, downstream substrates, mouse models, clinical relevance, and candidate inhibitors for S6K and shed light on S6K as a potential therapeutic target for cancers.
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Drouault M, Delalande C, Bouraïma-Lelong H, Seguin V, Garon D, Hanoux V. Deoxynivalenol enhances estrogen receptor alpha-induced signaling by ligand-independent transactivation. Food Chem Toxicol 2022; 165:113127. [DOI: 10.1016/j.fct.2022.113127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/08/2022] [Accepted: 05/06/2022] [Indexed: 11/26/2022]
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The Role of mTOR and eIF Signaling in Benign Endometrial Diseases. Int J Mol Sci 2022; 23:ijms23073416. [PMID: 35408777 PMCID: PMC8998789 DOI: 10.3390/ijms23073416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/19/2022] [Accepted: 03/20/2022] [Indexed: 02/05/2023] Open
Abstract
Adenomyosis, endometriosis, endometritis, and typical endometrial hyperplasia are common non-cancerous diseases of the endometrium that afflict many women with life-impacting consequences. The mammalian target of the rapamycin (mTOR) pathway interacts with estrogen signaling and is known to be dysregulated in endometrial cancer. Based on this knowledge, we attempt to investigate the role of mTOR signaling in benign endometrial diseases while focusing on how the interplay between mTOR and eukaryotic translation initiation factors (eIFs) affects their development. In fact, mTOR overactivity is apparent in adenomyosis, endometriosis, and typical endometrial hyperplasia, where it promotes endometrial cell proliferation and invasiveness. Recent data show aberrant expression of various components of the mTOR pathway in both eutopic and ectopic endometrium of patients with adenomyosis or endometriosis and in hyperplastic endometrium as well. Moreover, studies on endometritis show that derangement of mTOR signaling is linked to the establishment of endometrial dysfunction caused by chronic inflammation. This review shows that inhibition of the mTOR pathway has a promising therapeutic effect in benign endometrial conditions, concluding that mTOR signaling dysregulation plays a critical part in their pathogenesis.
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Adhikari S, Guha D, Mohan C, Mukherjee S, Tyler JK, Das C. Reprogramming Carbohydrate Metabolism in Cancer and Its Role in Regulating the Tumor Microenvironment. Subcell Biochem 2022; 100:3-65. [PMID: 36301490 PMCID: PMC10760510 DOI: 10.1007/978-3-031-07634-3_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Altered metabolism has become an emerging feature of cancer cells impacting their proliferation and metastatic potential in myriad ways. Proliferating heterogeneous tumor cells are surrounded by other resident or infiltrating cells, along with extracellular matrix proteins, and other secretory factors constituting the tumor microenvironment. The diverse cell types of the tumor microenvironment exhibit different molecular signatures that are regulated at their genetic and epigenetic levels. The cancer cells elicit intricate crosstalks with these supporting cells, exchanging essential metabolites which support their anabolic processes and can promote their survival, proliferation, EMT, angiogenesis, metastasis and even therapeutic resistance. In this context, carbohydrate metabolism ensures constant energy supply being a central axis from which other metabolic and biosynthetic pathways including amino acid and lipid metabolism and pentose phosphate pathway are diverged. In contrast to normal cells, increased glycolytic flux is a distinguishing feature of the highly proliferative cancer cells, which supports them to adapt to a hypoxic environment and also protects them from oxidative stress. Such rewired metabolic properties are often a result of epigenetic alterations in the cancer cells, which are mediated by several factors including, DNA, histone and non-histone protein modifications and non-coding RNAs. Conversely, epigenetic landscapes of the cancer cells are also dictated by their diverse metabolomes. Altogether, this metabolic and epigenetic interplay has immense potential for the development of efficient anti-cancer therapeutic strategies. In this book chapter we emphasize upon the significance of reprogrammed carbohydrate metabolism in regulating the tumor microenvironment and cancer progression, with an aim to explore the different metabolic and epigenetic targets for better cancer treatment.
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Affiliation(s)
- Swagata Adhikari
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
- Homi Bhaba National Institute, Mumbai, India
| | - Deblina Guha
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
| | - Chitra Mohan
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Shravanti Mukherjee
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
| | - Jessica K Tyler
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Chandrima Das
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India.
- Homi Bhaba National Institute, Mumbai, India.
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Patel JM, Jeselsohn RM. Estrogen Receptor Alpha and ESR1 Mutations in Breast Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1390:171-194. [DOI: 10.1007/978-3-031-11836-4_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Mishra A, Srivastava A, Pateriya A, Tomar MS, Mishra AK, Shrivastava A. Metabolic reprograming confers tamoxifen resistance in breast cancer. Chem Biol Interact 2021; 347:109602. [PMID: 34331906 DOI: 10.1016/j.cbi.2021.109602] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 07/20/2021] [Accepted: 07/27/2021] [Indexed: 02/06/2023]
Abstract
Breast cancer is the most common cancer among females and the leading cause of cancer-related deaths. Approximately 70 % of breast cancers are estrogen receptor (ER) positive. An ER antagonist such as tamoxifen is used as adjuvant therapy in ER-positive patients. The major problem with endocrine therapy is the emergence of acquired resistance in approximately 40 % of patients receiving tamoxifen. Metabolic alteration is one of the hallmarks of cancer cells. Rapidly proliferating cancer cells require increased nutritional support to fuel various functions such as proliferation, cell migration, and metastasis. Recent studies have established that the metabolic state of cancer cells influences their susceptibility to chemotherapeutic drugs and that cancer cells reprogram their metabolism to develop into resistant phenotypes. In this review, we discuss the major findings on metabolic pathway alterations in tamoxifen-resistant (TAMR) breast cancer and the molecular mechanisms known to regulate the expression and function of metabolic enzymes and the respective metabolite levels upon tamoxifen treatment. It is anticipated that this in-depth analysis of specific metabolic pathways in TAMR cancer might be exploited therapeutically.
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Affiliation(s)
- Alok Mishra
- Center for Advance Research, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Anshuman Srivastava
- Center for Advance Research, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Ankit Pateriya
- Center for Advance Research, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Manendra Singh Tomar
- Center for Advance Research, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Anand Kumar Mishra
- Department of Endocrine Surgery, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Ashutosh Shrivastava
- Center for Advance Research, Faculty of Medicine, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India.
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Gandhi N, Oturkar CC, Das GM. Estrogen Receptor-Alpha and p53 Status as Regulators of AMPK and mTOR in Luminal Breast Cancer. Cancers (Basel) 2021; 13:cancers13143612. [PMID: 34298826 PMCID: PMC8306694 DOI: 10.3390/cancers13143612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 12/12/2022] Open
Abstract
Luminal breast cancer (LBC) driven by dysregulated estrogen receptor-alpha (ERα) signaling accounts for 70% of the breast cancer cases diagnosed. Although endocrine therapy (ET) is effective against LBC, about one-third of these patients fail to respond to therapy owing to acquired or inherent resistance mechanisms. Aberrant signaling via ERα, oncogenes, growth factor receptors, and mutations in tumor suppressors such as p53 impinge on downstream regulators such as AMPK and mTOR. While both AMPK and mTOR have been reported to play important roles in determining sensitivity of LBC to ET, how the ERα-p53 crosstalk impinges on regulation of AMPK and mTOR, thereby influencing therapeutic efficacy remains unknown. Here, we have addressed this important issue using isogenic breast cancer cell lines, siRNA-mediated RNA knockdown, and different modes of drug treatments. Interaction of p53 with ERα and AMPK was determined by in situ proximity ligation assay (PLA), and endogenous gene transcripts were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). Further, the effect of concurrent and sequential administration of Fulvestrant-Everolimus combination on colony formation was determined. The studies showed that in cells expressing wild type p53, as well as in cells devoid of p53, ERα represses AMPK, whereas in cells harboring mutant p53, repression of AMPK is sustained even in the absence of ERα. AMPK is a major negative regulator of mTOR, and to our knowledge, this is the first study on the contribution of AMPK-dependent regulation of mTOR by ERα. Furthermore, the studies revealed that independent of the p53 mutation status, combination of Fulvestrant and Everolimus may be a viable first line therapeutic strategy for potentially delaying resistance of ERα+/HER2- LBC to ET.
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20
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Everolimus plus aromatase inhibitors as maintenance therapy after first-line chemotherapy: Final results of the phase III randomised MAIN-A (MAINtenance Afinitor) trial. Eur J Cancer 2021; 154:21-29. [PMID: 34225066 DOI: 10.1016/j.ejca.2021.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Despite endocrine therapy being the mainstay of treatment for hormone receptor positive (HR+)/HER2- metastatic breast cancer, patients at risk of visceral crisis or doubt for endocrine sensitivity are still offered first-line chemotherapy. Maintenance hormonal therapy is generally offered at the discontinuation of chemotherapy. The MAINtenance Afinitor study is a randomised, phase III trial comparing maintenance everolimus combined with aromatase inhibitors (AIs) versus AI monotherapy in patients with disease control after first-line chemotherapy. METHODS Patients with stable disease, partial response or complete response after first-line chemotherapy were randomised to everolimus plus AIs (exemestane or letrozole or anastrozole) or to AIs alone. Primary aim was progression-free survival (PFS). Secondary aims included response rate, safety and overall survival (OS). RESULTS In total, 110 patients were randomised to everolimus + AIs (n = 52) or to AIs (n = 58). Median PFS was 11.0 months (95% confidence interval [CI] 8.1-13.8) in the everolimus + AI arm and 7.2 months (95% CI 4.7-10.9) in the AI monotherapy arm (hazard ratio [HR] 0.71, 95% CI 0.47-1.06). Objective response rate was 22.4% in everolimus + AI arm and 19.2% in AI monotherapy arm. A higher proportion of disease progression as best response was reported in the AI monotherapy arm (28.8% versus 14.3%). Median OS was 35.7 months (95% CI 26.0-47.8) in the combination arm versus 33.5 (95% CI 26.4-42.7) in the AI alone arm (HR 1.0, 95% CI 0.61-1.62). CONCLUSIONS EVE + AIs did not significantly impact on the outcome of metastatic breast cancer patients deemed suitable for first-line chemotherapy. Also taking into account treatment tolerability, maintenance endocrine therapy remains the standard. TRIAL REGISTRATION EudraCT: 2013-004153-24.
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21
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CSNK1G2 differently sensitizes tamoxifen-induced decrease in PI3K/AKT/mTOR/S6K and ERK signaling according to the estrogen receptor existence in breast cancer cells. PLoS One 2021; 16:e0246264. [PMID: 33861751 PMCID: PMC8051802 DOI: 10.1371/journal.pone.0246264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 01/17/2021] [Indexed: 11/19/2022] Open
Abstract
Tamoxifen (TAM) is a selective estrogen receptor modulator used for breast cancer patients. Prolonged use of tamoxifen is not recommended for some patients. In this study, we aimed to identify molecular targets sensitive to TAM using a genome-wide gene deletion library screening of fission yeast heterozygous mutants. From the screening, casein kinase 1 gamma 2 (CSNK1G2), a serine-/threonine protein kinase, was the most sensitive target to TAM with a significant cytotoxicity in estrogen receptor-positive (ER+) breast cancer cells but with only a slight toxicity in the case of ER- cells. In addition, tumor sphere formation and expression of breast stem cell marker genes such as CD44/CD2 were greatly inhibited by CSNK1G2 knockdown in ER+ breast cancer cells. Consistently, CSNK1G2 altered ERα activity via phosphorylation, specifically at serine (Ser)167, as well as the regulation of estrogen-responsive element (ERE) of estrogen-responsive genes such as CTSD and GREB1. However, ERα silencing almost completely blocked CSNK1G2-induced TAM sensitivity. In ER+ breast cancer cells, combined treatment with TAM and CSNK1G2 knockdown further enhanced the TAM-mediated decrease in phosphatidylinositol 3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR)/ribosomal protein S6 kinase (S6K) signaling but not extracellular signal-regulated kinase (ERK) signaling. Inversely, in ER- cells treated with TAM, only ERK and PI3K signaling was altered by CSNK1G2 knockdown. The CK1 inhibitor, D4476, partly mimicked the CSNK1G2 knockdown effect in ER+ breast cancer cells, but with a broader repression ranging from PI3K/AKT/mTOR/S6K to ERK signaling. Collectively, these results suggest that CSNK1G2 plays a key role in sensitizing TAM toxicity in ER+ and ER- breast cancer cells via differently regulating PI3K/AKT/mTOR/S6K and ERK signaling.
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22
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Vernieri C, Nichetti F, Lalli L, Moscetti L, Giorgi CA, Griguolo G, Marra A, Randon G, Rea CG, Ligorio F, Scagnoli S, De Angelis C, Molinelli C, Fabbri A, Ferraro E, Trapani D, Milani A, Agostinetto E, Bernocchi O, Catania G, Vantaggiato A, Palleschi M, Moretti A, Basile D, Cinausero M, Ajazi A, Castagnoli L, Lo Vullo S, Gerratana L, Puglisi F, La Verde N, Arpino G, Rocca A, Ciccarese M, Pedersini R, Fabi A, Generali D, Losurdo A, Montemurro F, Curigliano G, Del Mastro L, Michelotti A, Cortesi E, Guarneri V, Pruneri G, Mariani L, de Braud F. Impact of Baseline and On-Treatment Glycemia on Everolimus-Exemestane Efficacy in Patients with Hormone Receptor-Positive Advanced Breast Cancer (EVERMET). Clin Cancer Res 2021; 27:3443-3455. [PMID: 33785482 DOI: 10.1158/1078-0432.ccr-20-4928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/24/2021] [Accepted: 03/26/2021] [Indexed: 11/16/2022]
Abstract
PURPOSE The mTOR complex C1 (mTORC1) inhibitor everolimus in combination with the aromatase inhibitor exemestane is an effective treatment for patients with hormone receptor-positive (HR+), HER2-negative (HER2-), advanced breast cancer (HR+/HER2- aBC). However, everolimus can cause hyperglycemia and hyperinsulinemia, which could reactivate the PI3K/protein kinase B (AKT)/mTORC1 pathway and induce tumor resistance to everolimus. EXPERIMENTAL DESIGN We conducted a multicenter, retrospective, Italian study to investigate the impact of baseline and on-treatment (i.e., during first 3 months of therapy) blood glucose levels on progression-free survival (PFS) in patients with HR+/HER2- aBC treated with everolimus-exemestane. RESULTS We evaluated 809 patients with HR+/HER2- aBC treated with everolimus-exemestane as any line of therapy for advanced disease. When evaluated as dichotomous variables, baseline and on-treatment glycemia were not significantly associated with PFS. However, when blood glucose concentration was evaluated as a continuous variable, a multivariable model accounting for clinically relevant patient- and tumor-related variables revealed that both baseline and on-treatment glycemia are associated with PFS, and this association is largely attributable to their interaction. In particular, patients who are normoglycemic at baseline and experience on-treatment diabetes have lower PFS compared with patients who are already hyperglycemic at baseline and experience diabetes during everolimus-exemestane therapy (median PFS, 6.34 vs. 10.32 months; HR, 1.76; 95% confidence interval, 1.15-2.69; P = 0.008). CONCLUSIONS The impact of on-treatment glycemia on the efficacy of everolimus-exemestane therapy in patients with HR+/HER2- aBC depends on baseline glycemia. This study lays the foundations for investigating novel therapeutic approaches to target the glucose/insulin axis in combination with PI3K/AKT/mTORC1 inhibitors in patients with HR+/HER2- aBC.
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Affiliation(s)
- Claudio Vernieri
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy. .,IFOM, the FIRC Institute of Molecular Oncology, Milan, Italy
| | - Federico Nichetti
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Luca Lalli
- Unit of Clinical Epidemiology and Trial Organization, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Luca Moscetti
- Division of Medical Oncology, Department of Oncology and Hematology, University Hospital of Modena, Modena, Italy
| | | | - Gaia Griguolo
- Medical Oncology 2, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy.,Department of Surgery, Oncology and Gastroenterology, University of Padova, Padua, Italy
| | - Antonio Marra
- Division of Early Drug Development for Innovative Therapies, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Giovanni Randon
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Carmen G Rea
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Francesca Ligorio
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Simone Scagnoli
- Department of Medico-Surgical Sciences and Translational Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Claudia De Angelis
- UO Oncologia Medica 2, Ospedale S. Chiara, Dipartimento di Oncologia, Dei Trapianti e Delle Nuove Tecnologie, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Chiara Molinelli
- IRCCS Ospedale Policlinico San Martino, U.O.S.D. Breast Unit, Genova, Italy
| | - Agnese Fabbri
- Medical Oncology Unit, Belcolle Hospital, Viterbo, Italy
| | - Emanuela Ferraro
- Division of Early Drug Development for Innovative Therapies, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Dario Trapani
- Division of Early Drug Development for Innovative Therapies, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Andrea Milani
- Multidisciplinary Oncology Outpatient Clinic, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Elisa Agostinetto
- Medical Oncology and Hematology Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy
| | - Ottavia Bernocchi
- Department of Medical, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Giovanna Catania
- Division of Medical Oncology, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | | | - Michela Palleschi
- Department of Medical Oncology, IRCCS Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori" - IRST, Meldola, Italy
| | - Anna Moretti
- Department of Oncology, ASST Fatebenefratelli Sacco - PO Fatebenefratelli, Milan, Italy
| | - Debora Basile
- Department of Medical Oncology, IRCCS Centro di Riferimento Oncologico di Aviano (CRO), Aviano, Italy
| | - Marika Cinausero
- Department of Oncology, ASUFC University Hospital of Udine, Udine, Italy
| | - Arta Ajazi
- IFOM, the FIRC Institute of Molecular Oncology, Milan, Italy
| | - Lorenzo Castagnoli
- Molecular Targeting Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Salvatore Lo Vullo
- Unit of Clinical Epidemiology and Trial Organization, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Lorenzo Gerratana
- Department of Medical Oncology, IRCCS Centro di Riferimento Oncologico di Aviano (CRO), Aviano, Italy.,Department of Medicine, University of Udine, Udine, Italy
| | - Fabio Puglisi
- Department of Medical Oncology, IRCCS Centro di Riferimento Oncologico di Aviano (CRO), Aviano, Italy.,Department of Medicine, University of Udine, Udine, Italy
| | - Nicla La Verde
- Department of Oncology, ASST Fatebenefratelli Sacco - PO Luigi Sacco, Milan, Italy
| | - Grazia Arpino
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Andrea Rocca
- Department of Medical Oncology, IRCCS Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori" - IRST, Meldola, Italy
| | | | - Rebecca Pedersini
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, Medical Oncology, University of Brescia at ASST Spedali Civili, Brescia, Italy
| | - Alessandra Fabi
- Division of Medical Oncology, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Daniele Generali
- Department of Medical, Surgery and Health Sciences, University of Trieste, Trieste, Italy.,Breast Cancer Unit & Translational Research Unit, ASST Cremona, Cremona, Italy
| | - Agnese Losurdo
- Medical Oncology and Hematology Unit, Humanitas Clinical and Research Center - IRCCS, Rozzano, Milan, Italy
| | - Filippo Montemurro
- Multidisciplinary Oncology Outpatient Clinic, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Giuseppe Curigliano
- Division of Early Drug Development for Innovative Therapies, IEO, European Institute of Oncology IRCCS, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Lucia Del Mastro
- IRCCS Ospedale Policlinico San Martino, U.O.S.D. Breast Unit, Genova, Italy.,Dipartimento di Medicina Interna e Specialità Mediche (DiMI), School of Medicine, University of Genova, Genova, Italy
| | - Andrea Michelotti
- UO Oncologia Medica 2, Ospedale S. Chiara, Dipartimento di Oncologia, Dei Trapianti e Delle Nuove Tecnologie, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Enrico Cortesi
- Department of Medico-Surgical Sciences and Translational Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Valentina Guarneri
- Medical Oncology 2, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy.,Department of Surgery, Oncology and Gastroenterology, University of Padova, Padua, Italy
| | - Giancarlo Pruneri
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy.,Department of Diagnostic Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Luigi Mariani
- Unit of Clinical Epidemiology and Trial Organization, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Filippo de Braud
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
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Im YH, Karabulut B, Lee KS, Park BW, Adhav A, Cinkir HY, Abdel-Razeq H, Chang YC, Aksoy S, Im SA, Jeong J, Chae Y, Bowles J, Slimane K, Xue H, Kim SB. Safety and efficacy of everolimus (EVE) plus exemestane (EXE) in postmenopausal women with locally advanced or metastatic breast cancer: final results from EVEREXES. Breast Cancer Res Treat 2021; 188:77-89. [PMID: 33728524 DOI: 10.1007/s10549-021-06173-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 03/03/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND This study was conducted to collect clinical safety, tolerability, and efficacy data with the use of everolimus (EVE) combined with exemestane (EXE) in patients with advanced breast cancer (ABC). METHODS The EVEREXES trial initiated in 2012, provided early access to the first dual blockade treatment with EVE + EXE in patients with HR+, HER2 - ABC in Asia and other emerging growth countries. Postmenopausal women with HR+, HER2 - ABC who had documented recurrence or progression, following a nonsteroidal aromatase inhibitor therapy, were treated with EVE (10 mg/day) + EXE (25 mg/day) orally. RESULTS A total of 235 patients received ≥ 1 dose of study medication. At the end of the study, all patients ceased the treatment. Disease progression (66.0%) was the primary reason of discontinuation. The most common AEs (≥ 20%) were stomatitis, decreased appetite, hyperglycemia, rash, aspartate aminotransferase increased, anemia, alanine aminotransferase increased, cough, and fatigue. No new safety concerns were identified in the current study. Median progression-free survival (PFS) in the Asian subset was similar to that of the overall population (9.3 months in both groups). Confirmed overall response rate (ORR) was achieved for 19.6% of the patients. Efficacy of EVE + EXE across subgroups (prior CT, line of treatment, and presence of visceral metastases) was maintained. CONCLUSION The safety and efficacy results from EVEREXES trial are consistent to data previously reported in BOLERO-2. These results support that EVE + EXE could be a viable treatment option for the postmenopausal women with HR+, HER2 - ABC in Asian region.
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Affiliation(s)
- Young-Hyuck Im
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Bulent Karabulut
- Department of Medical Oncology, Faculty of Medicine, Ege University, Izmir, Turkey
| | - Keun Seok Lee
- Center for Breast Cancer, National Cancer Center, Gyeonggi do, Korea
| | - Byeong-Woo Park
- Department of Surgery, Yonsei University Health System, Severance Hospital, Seoul, Korea
| | - Aditya Adhav
- Department of Surgical Oncology, HCG Manavata Cancer Centre, Nashik, India
| | - Havva Yesil Cinkir
- Department of Medical Oncology, Gaziantep University Medical Faculty, Gaziantep, Turkey
| | | | | | - Sercan Aksoy
- Hacettepe University Medical Faculty, Ankara, Turkey
| | - Seock-Ah Im
- Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Joon Jeong
- Department of Surgery, Gangnam Severance Hospital Yonsei University Health System, Seoul, Korea
| | - Yeesoo Chae
- Kyungpook National University Hospital, Daegu, Korea
| | | | | | - Hongling Xue
- Novartis Asia Pacific Pharmaceuticals Pte Ltd, Singapore, Singapore
| | - Sung-Bae Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Melnik BC. Lifetime Impact of Cow's Milk on Overactivation of mTORC1: From Fetal to Childhood Overgrowth, Acne, Diabetes, Cancers, and Neurodegeneration. Biomolecules 2021; 11:404. [PMID: 33803410 PMCID: PMC8000710 DOI: 10.3390/biom11030404] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 02/07/2023] Open
Abstract
The consumption of cow's milk is a part of the basic nutritional habits of Western industrialized countries. Recent epidemiological studies associate the intake of cow's milk with an increased risk of diseases, which are associated with overactivated mechanistic target of rapamycin complex 1 (mTORC1) signaling. This review presents current epidemiological and translational evidence linking milk consumption to the regulation of mTORC1, the master-switch for eukaryotic cell growth. Epidemiological studies confirm a correlation between cow's milk consumption and birthweight, body mass index, onset of menarche, linear growth during childhood, acne vulgaris, type 2 diabetes mellitus, prostate cancer, breast cancer, hepatocellular carcinoma, diffuse large B-cell lymphoma, neurodegenerative diseases, and all-cause mortality. Thus, long-term persistent consumption of cow's milk increases the risk of mTORC1-driven diseases of civilization. Milk is a highly conserved, lactation genome-controlled signaling system that functions as a maternal-neonatal relay for optimized species-specific activation of mTORC1, the nexus for regulation of eukaryotic cell growth, and control of autophagy. A deeper understanding of milk´s impact on mTORC1 signaling is of critical importance for the prevention of common diseases of civilization.
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Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Am Finkenhügel 7a, D-49076 Osnabrück, Germany
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Ballhausen A, Wheler JJ, Karp DD, Piha-Paul SA, Fu S, Pant S, Tsimberidou AM, Hong DS, Subbiah V, Holley VR, Huang HJ, Brewster AM, Koenig KB, Ibrahim NK, Meric-Bernstam F, Janku F. Phase I Study of Everolimus, Letrozole, and Trastuzumab in Patients with Hormone Receptor-positive Metastatic Breast Cancer or Other Solid Tumors. Clin Cancer Res 2021; 27:1247-1255. [PMID: 33115815 DOI: 10.1158/1078-0432.ccr-20-2878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/15/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE Doublets of everolimus with letrozole or trastuzumab have demonstrated activity against HER2-positive breast cancer, suggesting that the triple combination can have synergistic anticancer activity. PATIENTS AND METHODS This first-in-human dose-escalation study (NCT02152943) enrolled patients with hormone receptor- positive, HER2-positive (defined by amplification, overexpression, or mutation) treatment-refractory advanced cancers to receive escalating doses (3+3 design) of daily oral letrozole (days 1-21), daily oral everolimus (days 1-21), and intravenous trastuzumab (day 1) every 21 days to determine dose-limiting toxicities (DLT) and MTD or recommended phase II dose (RP2D). RESULTS A total of 32 patients with hormone receptor-positive, HER2-positive (amplification, n = 27; overexpression, n = 1; and mutation, n = 4) advanced breast cancer (n = 26) or other cancers (n = 6) were enrolled. The most frequent grade ≥3 adverse events included hyperglycemia (n = 4), anemia (n = 3), thrombocytopenia (n = 2), and mucositis (n = 2). DLTs included grade 3 mucositis and grade 4 neutropenia, and trastuzumab given as an 8 mg/kg loading dose on day 1 of cycle 1 followed by a 6 mg/kg maintenance dose on day 1 of subsequent cycles plus 10 mg everolimus daily and 2.5 mg letrozole daily every 21 days was declared as RP2D. Five patients with breast cancer (four with HER2 amplification and one with HER2 mutation) had partial responses. HER2 amplification in circulating cell-free DNA at baseline was associated with shorter progression-free and overall survival durations (P < 0.05). CONCLUSIONS Everolimus, letrozole, and trastuzumab have a favorable safety profile and elicit encouraging signals of anticancer activity in patients with heavily pretreated hormone receptor- and HER2-positive advanced cancers.
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Affiliation(s)
- Alexej Ballhausen
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas.,Medical Department, Division of Hematology, Oncology and Tumor Immunology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jennifer J Wheler
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Daniel D Karp
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sarina A Piha-Paul
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Siqing Fu
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Shubham Pant
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Apostolia M Tsimberidou
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David S Hong
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Vivek Subbiah
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Veronica R Holley
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Helen J Huang
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Abenaa M Brewster
- Division of Cancer Medicine, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kimberly B Koenig
- Division of Cancer Medicine, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Nuhad K Ibrahim
- Division of Cancer Medicine, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Funda Meric-Bernstam
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Filip Janku
- Division of Cancer Medicine, Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Evans JF, Obraztsova K, Lin SM, Krymskaya VP. CrossTORC and WNTegration in Disease: Focus on Lymphangioleiomyomatosis. Int J Mol Sci 2021; 22:ijms22052233. [PMID: 33668092 PMCID: PMC7956553 DOI: 10.3390/ijms22052233] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 02/07/2023] Open
Abstract
The mechanistic target of rapamycin (mTOR) and wingless-related integration site (Wnt) signal transduction networks are evolutionarily conserved mammalian growth and cellular development networks. Most cells express many of the proteins in both pathways, and this review will briefly describe only the key proteins and their intra- and extracellular crosstalk. These complex interactions will be discussed in relation to cancer development, drug resistance, and stem cell exhaustion. This review will also highlight the tumor-suppressive tuberous sclerosis complex (TSC) mutated, mTOR-hyperactive lung disease of women, lymphangioleiomyomatosis (LAM). We will summarize recent advances in the targeting of these pathways by monotherapy or combination therapy, as well as future potential treatments.
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Estrogen Receptor on the move: Cistromic plasticity and its implications in breast cancer. Mol Aspects Med 2020; 78:100939. [PMID: 33358533 DOI: 10.1016/j.mam.2020.100939] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 01/27/2023]
Abstract
Estrogen Receptor (ERα) is a hormone-driven transcription factor, critically involved in driving tumor cell proliferation in the vast majority of breast cancers (BCas). ERα binds the genome at cis-regulatory elements, dictating the expression of a large spectrum of responsive genes in 3D genomic space. While initial reports described a rather static ERα chromatin binding repertoire, we now know that ERα DNA interactions are highly versatile, altered in breast tumor development and progression, and deviate between tumors from patients with differential outcome. Multiple cellular signaling cascades are known to impinge on ERα genomic function, changing its cistrome to retarget the receptor to other regions of the genome and reprogram its impact on breast cell biology. This review describes the current state-of-the-art on which factors manipulate the ERα cistrome and how this alters the response to both endogenous and exogenous hormonal stimuli, ultimately impacting BCa cell progression and response to commonly used therapeutic interventions. Novel insights in ERα cistrome dynamics may pave the way for better patient diagnostics and the development of novel therapeutic interventions, ultimately improving cancer care and patient outcome.
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Unraveling the multifaceted nature of the nuclear function of mTOR. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118907. [PMID: 33189783 DOI: 10.1016/j.bbamcr.2020.118907] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/02/2020] [Accepted: 11/08/2020] [Indexed: 01/25/2023]
Abstract
Positioned at the axis between the cell and its environment, mTOR directs a wide range of cellular activity in response to nutrients, growth factors, and stress. Our understanding of the role of mTOR is evolving beyond the spatial confines of the cytosol, and its role in the nucleus becoming ever more apparent. In this review, we will address various studies that explore the role of nuclear mTOR (nmTOR) in specific cellular programs and how these pathways influence one another. To understand the emerging roles of nuclear mTOR, we discuss data and propose plausible mechanisms to offer novel ideas, hypotheses, and future research directions.
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Obraztsova K, Basil MC, Rue R, Sivakumar A, Lin SM, Mukhitov AR, Gritsiuta AI, Evans JF, Kopp M, Katzen J, Robichaud A, Atochina-Vasserman EN, Li S, Carl J, Babu A, Morley MP, Cantu E, Beers MF, Frank DB, Morrisey EE, Krymskaya VP. mTORC1 activation in lung mesenchyme drives sex- and age-dependent pulmonary structure and function decline. Nat Commun 2020; 11:5640. [PMID: 33159078 PMCID: PMC7648630 DOI: 10.1038/s41467-020-18979-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 09/23/2020] [Indexed: 12/22/2022] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a rare fatal cystic lung disease due to bi-allelic inactivating mutations in tuberous sclerosis complex (TSC1/TSC2) genes coding for suppressors of the mechanistic target of rapamycin complex 1 (mTORC1). The origin of LAM cells is still unknown. Here, we profile a LAM lung compared to an age- and sex-matched healthy control lung as a hypothesis-generating approach to identify cell subtypes that are specific to LAM. Our single-cell RNA sequencing (scRNA-seq) analysis reveals novel mesenchymal and transitional alveolar epithelial states unique to LAM lung. This analysis identifies a mesenchymal cell hub coordinating the LAM disease phenotype. Mesenchymal-restricted deletion of Tsc2 in the mouse lung produces a mTORC1-driven pulmonary phenotype, with a progressive disruption of alveolar structure, a decline in pulmonary function, increase of rapamycin-sensitive expression of WNT ligands, and profound female-specific changes in mesenchymal and epithelial lung cell gene expression. Genetic inactivation of WNT signaling reverses age-dependent changes of mTORC1-driven lung phenotype, but WNT activation alone in lung mesenchyme is not sufficient for the development of mouse LAM-like phenotype. The alterations in gene expression are driven by distinctive crosstalk between mesenchymal and epithelial subsets of cells observed in mesenchymal Tsc2-deficient lungs. This study identifies sex- and age-specific gene changes in the mTORC1-activated lung mesenchyme and establishes the importance of the WNT signaling pathway in the mTORC1-driven lung phenotype.
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Affiliation(s)
- Kseniya Obraztsova
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Maria C Basil
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Ryan Rue
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Susan M Lin
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Alexander R Mukhitov
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Andrei I Gritsiuta
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jilly F Evans
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Meghan Kopp
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jeremy Katzen
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Elena N Atochina-Vasserman
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Shanru Li
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Justine Carl
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Apoorva Babu
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael P Morley
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Edward Cantu
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael F Beers
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - David B Frank
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Children Hospital of Philadelphia, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Edward E Morrisey
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Vera P Krymskaya
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Lung Biology Institute, University of Pennsylvania, Philadelphia, PA, USA.
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, USA.
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Wang M, Wan H, Wang S, Liao L, Huang Y, Guo L, Liu F, Shang L, Huang J, Ji D, Xia X, Jiang B, Chen D, Xiong K. RSK3 mediates necroptosis by regulating phosphorylation of RIP3 in rat retinal ganglion cells. J Anat 2020; 237:29-47. [PMID: 32162697 PMCID: PMC7309291 DOI: 10.1111/joa.13185] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/15/2022] Open
Abstract
Receptor-interacting protein 3 (RIP3) plays an important role in the necroptosis signaling pathway. Our previous studies have shown that the RIP3/mixed lineage kinase domain-like protein (MLKL)-mediated necroptosis occurs in retinal ganglion cell line 5 (RGC-5) following oxygen-glucose deprivation (OGD). However, upstream regulatory pathways of RIP3 are yet to be uncovered. The purpose of the present study was to investigate the role of p90 ribosomal protein S6 kinase 3 (RSK3) in the phosphorylation of RIP3 in RGC-5 cell necroptosis following OGD. Our results showed that expression of RSK3, RIP3, and MLKL was upregulated in necroptosis of RGC-5 after OGD. A computer simulation based on our preliminary results indicated that RSK3 might interact with RIP3, which was subsequently confirmed by co-immunoprecipitation. Further, we found that the application of a specific RSK inhibitor, LJH685, or rsk3 small interfering RNA (siRNA), downregulated the phosphorylation of RIP3. However, the overexpression of rip3 did not affect the expression of RSK3, thereby indicating that RSK3 could be a possible upstream regulator of RIP3 phosphorylation in OGD-induced necroptosis of RGC-5 cells. Moreover, our in vivo results showed that pretreatment with LJH685 before acute high intraocular pressure episodes could reduce the necroptosis of retinal neurons and improve recovery of impaired visual function. Taken together, our findings suggested that RSK3 might work as an upstream regulator of RIP3 phosphorylation during RGC-5 necroptosis.
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Affiliation(s)
- Mi Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Hao Wan
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Shuchao Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Lvshuang Liao
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Yanxia Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Limin Guo
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Fengxia Liu
- Department of Human AnatomySchool of Basic Medical ScienceXinjiang Medical UniversityUrumqiChina
| | - Lei Shang
- Jiangxi Research Institute of Ophthalmology and Visual SciencesAffiliated Eye Hospital of Nanchang UniversityNanchangChina
| | - Jufang Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Dan Ji
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Xiaobo Xia
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Bin Jiang
- Department of OphthalmologyThe Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Dan Chen
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Kun Xiong
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
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Estrogen and estrogen receptors chauffeur the sex-biased autophagic action in liver. Cell Death Differ 2020; 27:3117-3130. [PMID: 32483382 DOI: 10.1038/s41418-020-0567-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 05/20/2020] [Accepted: 05/20/2020] [Indexed: 01/02/2023] Open
Abstract
Autophagy, or cellular self-digestion, is an essential cellular process imperative for energy homeostasis, development, differentiation, and survival. However, the intrinsic factors that bring about the sex-biased differences in liver autophagy are still unknown. In this work, we found that autophagic genes variably expresses in the steroidogenic tissues, mostly abundant in liver, and is influenced by the individual's sexuality. Starvation-induced autophagy in a time-dependent female-dominated manner, and upon starvation, a strong gender responsive circulating steroid-HK2 relation was observed, which highlighted the importance of estrogen in autophagy regulation. This was further confirmed by the enhanced or suppressed autophagy upon estrogen addition (male) or blockage (female), respectively. In addition, we found that estrogen proved to be the common denominator between stress management, glucose metabolism, and autophagic action in female fish. To understand further, we used estrogen receptor (ER)α- and ER-β2-knockout (KO) medaka and found ER-specific differences in sex-biased autophagy. Interestingly, starvation resulted in significantly elevated mTOR transcription (compared with control) in male ERα-KO fish while HK2 and ULK activation was greatly decreased in both KO fish in a female oriented fashion. Later, ChIP analysis confirmed that, NRF2, an upstream regulator of mTOR, only binds to ERα, while both ERα and ERβ2 are effectively pulled down the HK2 and LC3. FIHC data show that, in both ER-KO fish, LC3 nuclear-cytoplasmic transport and its associated pathways involving SIRT1 and DOR were greatly affected. Cumulatively, our data suggest that, ERα-KO strongly affected the early autophagic initiation and altered the LC3 nuclear-cytoplasmic translocation, thereby influencing the sex-biased final autophagosome formation in medaka. Thus, existence of steroid responsive autophagy regulatory-switches and sex-biased steroid/steroid receptor availability influences the gender-skewed autophagy. Expectedly, this study may furnish newer appreciation for gender-specific medicine research and therapeutics.
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Vernieri C, Corti F, Nichetti F, Ligorio F, Manglaviti S, Zattarin E, Rea CG, Capri G, Bianchi GV, de Braud F. Everolimus versus alpelisib in advanced hormone receptor-positive HER2-negative breast cancer: targeting different nodes of the PI3K/AKT/mTORC1 pathway with different clinical implications. Breast Cancer Res 2020; 22:33. [PMID: 32252811 PMCID: PMC7137211 DOI: 10.1186/s13058-020-01271-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 03/25/2020] [Indexed: 12/22/2022] Open
Abstract
Background The PI3K/AKT/mTORC1 axis is implicated in hormone receptor-positive HER2-negative metastatic breast cancer (HR+ HER2− mBC) resistance to anti-estrogen treatments. Based on results of the BOLERO-2 trial, the mTORC1 inhibitor everolimus in combination with the steroidal aromatase inhibitor (AI) exemestane has become a standard treatment for patients with HR+ HER2− mBC resistant to prior non-steroidal AI therapy. In the recent SOLAR-1 trial, the inhibitor of the PI3K alpha subunit (p110α) alpelisib in combination with fulvestrant prolonged progression-free survival (PFS) when compared to fulvestrant alone in patients with PIK3CA-mutated HR+ HER2− mBC that progressed after/on previous AI treatment. Therefore, two different molecules targeting the PI3K/AKT/mTORC1 axis, namely everolimus and alpelisib, are available for patients progressing on/after previous AI treatment, but it is unclear how to optimize their use in the clinical practice. Main body of the abstract Here, we reviewed the available clinical evidence deriving from the BOLERO-2 and SOLAR-1 trials to compare efficacy and safety profiles of everolimus and alpelisib in advanced HR+ HER2− BC treatment. Adding either compound to standard endocrine therapy provided similar absolute and relative PFS advantage. In the SOLAR-1 trial, a 76% incidence of grade (G) 3 or 4 (G3/G4) adverse events was reported, while G3/G4 toxicities occurred in 42% of patients in the BOLERO-2 trial. While alpelisib was only effective in patients with PIK3CA-mutated neoplasms, retrospective analyses indicate that everolimus improves exemestane efficacy independently of PIK3CA mutational status. Conclusions Based on the available efficacy and safety data, the “new” alpelisib may be burdened by higher incidence of severe adverse events, higher costs, and anticancer efficacy that is limited to PIK3CA-mutated tumors when compared to the “old” everolimus. Therefore, the everolimus-exemestane combination remains an effective and reasonably well-tolerated therapeutic option for HR+ HER2− mBC patients progressing after/on previous AI treatment, independently of PIK3CA mutational status.
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Affiliation(s)
- Claudio Vernieri
- IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy. .,Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy.
| | - Francesca Corti
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Federico Nichetti
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Francesca Ligorio
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Sara Manglaviti
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Emma Zattarin
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Carmen G Rea
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Giuseppe Capri
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Giulia V Bianchi
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy
| | - Filippo de Braud
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian, 1, 20133, Milan, Italy.,Oncology and Hemato-Oncology Department, University of Milan, 20122, Milan, Italy
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Faltas CL, LeBron KA, Holz MK. Unconventional Estrogen Signaling in Health and Disease. Endocrinology 2020; 161:5778016. [PMID: 32128594 PMCID: PMC7101056 DOI: 10.1210/endocr/bqaa030] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/13/2020] [Accepted: 03/02/2020] [Indexed: 01/01/2023]
Abstract
Estrogen is a key hormone involved in the development and homeostasis of several tissue types in both males and females. By binding estrogen receptors, estrogen regulates essential functions of gene expression, metabolism, cell growth, and proliferation by acting through cytoplasmic signaling pathways or activating transcription in the nucleus. However, disruption or dysregulation of estrogen activity has been shown to play a key role in the pathogenesis and progression of many diseases. This review will expatiate on some of the unconventional roles of estrogen in homeostasis and disease.
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Affiliation(s)
- Christina L Faltas
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY
| | - Kira A LeBron
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY
| | - Marina K Holz
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY
- Correspondence: Marina K. Holz, Department of Cell Biology and Anatomy, Graduate School of Basic Medical Sciences, New York Medical College, Valhalla, NY 10595. E-mail: . orcid.org/0000-0001-5030-7973
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Liu X, Miao W, Huang M, Li L, Dai X, Wang Y. Elevated Hexokinase II Expression Confers Acquired Resistance to 4-Hydroxytamoxifen in Breast Cancer Cells. Mol Cell Proteomics 2019; 18:2273-2284. [PMID: 31519767 PMCID: PMC6823848 DOI: 10.1074/mcp.ra119.001576] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/26/2019] [Indexed: 12/11/2022] Open
Abstract
Tamoxifen has been clinically used in treating estrogen receptor (ER)-positive breast cancer for over 30 years. The most challenging aspect associated with tamoxifen therapy is the development of resistance in initially responsive breast tumors. We applied a parallel-reaction monitoring (PRM)-based quantitative proteomic method to examine the differential expression of kinase proteins in MCF-7 and the isogenic tamoxifen-resistant (TamR) cells. We were able to quantify the relative protein expression levels of 315 kinases, among which hexokinase 2 (HK2) and mTOR were up-regulated in TamR MCF-7 cells. We also observed that the TamR MCF-7 cells exhibited elevated rate of glycolysis than the parental MCF-7 cells. In addition, we found that phosphorylation of S6K - a target of mTOR - was much lower in TamR MCF-7 cells, and this phosphorylation level could be restored upon genetic depletion or pharmacological inhibition of HK2. Reciprocally, the level of S6K phosphorylation was diminished upon overexpression of HK2 in MCF-7 cells. Moreover, we observed that HK2 interacts with mTOR, and this interaction inhibits mTOR activity. Lower mTOR activity led to augmented autophagy, which conferred resistance of MCF-7 cells toward tamoxifen. Together, our study demonstrates that elevated expression of HK2 promotes autophagy through inhibiting the mTOR-S6K signaling pathway and results in resistance of MCF-7 breast cancer cells toward tamoxifen; thus, our results uncovered, for the first time, HK2 as a potential therapeutic target for overcoming tamoxifen resistance.
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Affiliation(s)
- Xiaochuan Liu
- Department of Chemistry, University of California, Riverside, Riverside, CA 92521
| | - Weili Miao
- Department of Chemistry, University of California, Riverside, Riverside, CA 92521
| | - Ming Huang
- Environmental Toxicology Graduate Program, University of California, Riverside, Riverside, CA 92521
| | - Lin Li
- Department of Chemistry, University of California, Riverside, Riverside, CA 92521
| | - Xiaoxia Dai
- Department of Chemistry, University of California, Riverside, Riverside, CA 92521
| | - Yinsheng Wang
- Department of Chemistry, University of California, Riverside, Riverside, CA 92521; Environmental Toxicology Graduate Program, University of California, Riverside, Riverside, CA 92521.
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Cuesta R, Gritsenko MA, Petyuk VA, Shukla AK, Tsai CF, Liu T, McDermott JE, Holz MK. Phosphoproteome Analysis Reveals Estrogen-ER Pathway as a Modulator of mTOR Activity Via DEPTOR. Mol Cell Proteomics 2019; 18:1607-1618. [PMID: 31189691 PMCID: PMC6683011 DOI: 10.1074/mcp.ra119.001506] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/22/2019] [Indexed: 12/14/2022] Open
Abstract
ER-positive breast tumors represent ∼70% of all breast cancer cases. Although their treatment with endocrine therapies is effective in the adjuvant or recurrent settings, the development of resistance compromises their effectiveness. The binding of estrogen to ERα, a transcription factor, triggers the regulation of the target genes (genomic pathway). Additionally, a cytoplasmic fraction of estrogen-bound ERα activates oncogenic signaling pathways such as PI3K/AKT/mTOR (nongenomic pathway). The upregulation of the estrogenic and the PI3K/AKT/mTOR signaling pathways are frequently associated with a poor outcome. To better characterize the connection between these two pathways, we performed a phosphoproteome analysis of ER-positive MCF7 breast cancer cells treated with estrogen or estrogen and the mTORC1 inhibitor rapamycin. Many proteins were identified as estrogen-regulated mTORC1 targets and among them, DEPTOR was selected for further characterization. DEPTOR binds to mTOR and inhibits the kinase activity of both mTOR complexes mTORC1 and mTORC2, but mitogen-activated mTOR promotes phosphorylation-mediated DEPTOR degradation. Although estrogen enhances the phosphorylation of DEPTOR by mTORC1, DEPTOR levels increase in estrogen-stimulated cells. We demonstrated that DEPTOR accumulation is the result of estrogen-ERα-mediated transcriptional upregulation of DEPTOR expression. Consequently, the elevated levels of DEPTOR partially counterbalance the estrogen-induced activation of mTORC1 and mTORC2. These results underscore the critical role of estrogen-ERα as a modulator of the PI3K/AKT/mTOR signaling pathway in ER-positive breast cancer cells. Additionally, these studies provide evidence supporting the use of dual PI3K/mTOR or dual mTORC1/2 inhibitors in combination with endocrine therapies as a first-line treatment option for the patients with ER-positive advanced breast cancer.
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Affiliation(s)
- Rafael Cuesta
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla NY 10595
| | - Marina A Gritsenko
- §Biological Sciences Division, Pacific Northwest National Laboratory, Richland WA 99352
| | - Vladislav A Petyuk
- §Biological Sciences Division, Pacific Northwest National Laboratory, Richland WA 99352
| | - Anil K Shukla
- §Biological Sciences Division, Pacific Northwest National Laboratory, Richland WA 99352
| | - Chia-Feng Tsai
- §Biological Sciences Division, Pacific Northwest National Laboratory, Richland WA 99352
| | - Tao Liu
- §Biological Sciences Division, Pacific Northwest National Laboratory, Richland WA 99352
| | - Jason E McDermott
- ¶Computational Biology and Bioinformatics Group, Pacific Northwest National Laboratory, Richland WA 99352
| | - Marina K Holz
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla NY 10595; ‖Albert Einstein Cancer Center, Bronx NY 10461.
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Wei Y, Huang J. Role of estrogen and its receptors mediated-autophagy in cell fate and human diseases. J Steroid Biochem Mol Biol 2019; 191:105380. [PMID: 31078693 DOI: 10.1016/j.jsbmb.2019.105380] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 12/11/2022]
Abstract
Studies have shown that morbidity of several diseases varies between males and females. This difference likely arises due to sex-related hormones. Estrogen, a primary female sex steroid hormone, plays a critical role in mediating many of the physiological functions like growth, differentiation, metabolism, and cell death. Recently, it has been demonstrated that estrogen mediates autophagy through its receptors (ERs) namely ERα, ERβ, and G-protein coupled estrogen receptor (GPER). However, the specific role of estrogen and its receptors mediated-autophagy in cell fate and human diseases such as cancers, cardiovascular disease and nervous system disease remains unclear. In this review, we comprehensively summarize the complex role of estrogen and its receptors-mediated autophagy in different cell lines and human diseases. In addition, we further discuss the key signaling molecules governing the role of ERs in autophagy. This review will serve as the basis for a proposed model of autophagy constituting a new frontier in estrogen-related human diseases. Here, we discuss the dual role of ERα in classical and non-classical autophagy through B-cell lymphoma 2 (BCL2)-associated athanogene 3 (BAG3). Next, we review the role of ERβ in pro-survival pathways through the promotion of autophagy under stress conditions. We further discuss activation of GPER via estrogen often mediates autophagy or mitophagy suppression, respectively. In summary, we believe that understanding the relationship between estrogen and its receptors mediated-autophagy on cell fate and human diseases will provide insightful knowledge for future therapeutic implications.
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Affiliation(s)
- Yong Wei
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, Hubei, PR China
| | - Jian Huang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, Hubei, PR China.
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El Sayed R, El Jamal L, El Iskandarani S, Kort J, Abdel Salam M, Assi H. Endocrine and Targeted Therapy for Hormone-Receptor-Positive, HER2-Negative Advanced Breast Cancer: Insights to Sequencing Treatment and Overcoming Resistance Based on Clinical Trials. Front Oncol 2019; 9:510. [PMID: 31281796 PMCID: PMC6597942 DOI: 10.3389/fonc.2019.00510] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/28/2019] [Indexed: 01/30/2023] Open
Abstract
Background: Advanced hormone-receptor positive HER2 negative breast cancer is a common and a very heterogeneous disease. Hormone therapy is the main first line treatment of choice, given alone or in combination with other agents that have shown to improve patient outcomes, Nevertheless, treatment remains generally palliative rather than curative. Sequencing of such treatment remains challenging, especially with resurgence of variable resistance patterns. Multiple attempts have been made to overcome resistance and improve patient survival, yet resistance remains not very well understood and metastatic cancer remains a disease with dismal prognosis. Methods: In this paper, we searched pubmed database as well as local and international meetings for all studies discussing advanced and metastatic hormone-receptor-positive, her2-negative breast cancer, hormonal treatment, resistance to hormonal treatment, mechanism of resistance, and means to overcome such resistance. Conclusion: There does not exist an optimal treatment sequence for hormone-receptor-positive, her2-negative advanced breast cancer. However, after review of literature, a reasonable approach may be starting with tamoxifen, aromatase inhibitors, or fulvestrant in absence of visceral crisis, in addition to ensuring adequate ovarian function suppression in pre/peri-menopausal women. Aromatase inhibitors and fulvestrant seem to be superior. Resistance to such agents is increasing, mostly attributed to genetic and molecular changes. Multiple modalities are addressed to overcome such resistance including use of CKD4/6 inhibitors, mTOR inhibitors and PI3K inhibitors in addition to other agents under study, all with promising results. CDK4/6 inhibitors work best when used in frontline setting. Finally, treatment of breast cancer remains a growing field, and more studies are to be awaited.
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Affiliation(s)
- Rola El Sayed
- Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, American University of Beirut, Beirut, Lebanon
| | - Lara El Jamal
- School of Medicine, American University of Beirut, Beirut, Lebanon
| | | | - Jeries Kort
- Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, American University of Beirut, Beirut, Lebanon
| | | | - Hazem Assi
- Oncology Division, Department of Internal Medicine, American University of Beirut Medical Center, American University of Beirut, Beirut, Lebanon
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Rutkovsky AC, Yeh ES, Guest ST, Findlay VJ, Muise-Helmericks RC, Armeson K, Ethier SP. Eukaryotic initiation factor 4E-binding protein as an oncogene in breast cancer. BMC Cancer 2019; 19:491. [PMID: 31122207 PMCID: PMC6533768 DOI: 10.1186/s12885-019-5667-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 05/01/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Eukaryotic Initiation Factor 4E-Binding Protein (EIF4EBP1, 4EBP1) is overexpressed in many human cancers including breast cancer, yet the role of 4EBP1 in breast cancer remains understudied. Despite the known role of 4EBP1 as a negative regulator of cap-dependent protein translation, 4EBP1 is predicted to be an essential driving oncogene in many cancer cell lines in vitro, and can act as a driver of cancer cell proliferation. EIF4EBP1 is located within the 8p11-p12 genomic locus, which is frequently amplified in breast cancer and is known to predict poor prognosis and resistance to endocrine therapy. METHODS Here we evaluated the effect of 4EBP1 targeting using shRNA knock-down of expression of 4EBP1, as well as response to the mTORC targeted drug everolimus in cell lines representing different breast cancer subtypes, including breast cancer cells with the 8p11-p12 amplicon, to better define a context and mechanism for oncogenic 4EBP1. RESULTS Using a genome-scale shRNA screen on the SUM panel of breast cancer cell lines, we found 4EBP1 to be a strong hit in the 8p11 amplified SUM-44 cells, which have amplification and overexpression of 4EBP1. We then found that knock-down of 4EBP1 resulted in dramatic reductions in cell proliferation in 8p11 amplified breast cancer cells as well as in other luminal breast cancer cell lines, but had little or no effect on the proliferation of immortalized but non-tumorigenic human mammary epithelial cells. Kaplan-Meier analysis of EIF4EBP1 expression in breast cancer patients demonstrated that overexpression of this gene was associated with reduced relapse free patient survival across all breast tumor subtypes. CONCLUSIONS These results are consistent with an oncogenic role of 4EBP1 in luminal breast cancer and suggests a role for this protein in cell proliferation distinct from its more well-known role as a regulator of cap-dependent translation.
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Affiliation(s)
- Alexandria C. Rutkovsky
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425 USA
- Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425 USA
| | - Elizabeth S. Yeh
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue, BSB 358, MSC 509, Charleston, SC 29425 USA
- Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425 USA
| | - Stephen T. Guest
- Department of Computational Medicine and Bioinformatics, University of Michigan, 500 S. State Street, Ann Arbor, MI 48109 USA
| | - Victoria J. Findlay
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425 USA
| | - Robin C. Muise-Helmericks
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, 173 Ashley Avenue, BSB 601, MSC 508, Charleston, SC 29425 USA
| | - Kent Armeson
- Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425 USA
- Department of Public Health Sciences, Medical University of South Carolina, 135 Cannon Street Suite 303 MSC 835, Charleston, USA
| | - Stephen P. Ethier
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425 USA
- Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425 USA
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Zhang S, Hu B, Lv X, Chen S, Liu W, Shao Z. The Prognostic Role of Ribosomal Protein S6 Kinase 1 Pathway in Patients With Solid Tumors: A Meta-Analysis. Front Oncol 2019; 9:390. [PMID: 31139572 PMCID: PMC6527894 DOI: 10.3389/fonc.2019.00390] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 04/26/2019] [Indexed: 12/26/2022] Open
Abstract
Background: Recent studies supported the predictive role of ribosomal protein S6 kinase 1 (S6K1), phosphorylated S6K1 (p-S6K1), and phosphorylated ribosomal protein S6 (p-S6) for the outcome of cancer patients. However, inconsistent results were acquired across different researches. To comprehensively and quantitatively elucidate their prognostic significance in solid malignancies, the current meta-analysis was carried out utilizing the results of clinical studies. Methods: We conducted the literature retrieval by searching PubMed, Web of Science, EMBASE, and Cochrane library to identify eligible publications. Data were collected from included articles to calculate pooled overall survival (OS), disease-free survival (DFS), recurrence-free survival (RFS), and progression-free survival (PFS). Hazard ratios (HRs) with 95% confidence intervals (CIs) served as appropriate parameters to assess prognostic significance. Results: Forty-four original studies were included, of which 7 studies were analyzed for S6K1, 24 for p-S6K1, and 16 for p-S6. The overexpression of p-S6K1 was significantly associated with poorer prognosis of solid tumor patients in OS (HR = 1.706, 95%CI: 1.369–2.125, p < 0.001), DFS (HR = 1.665, 95%CI: 1.002–2.768, p = 0.049). However, prognostic role of p-S6K1 in RFS and PFS was not found. The result also revealed that S6K1 and p-S6 were significantly associated with reduced OS (HR = 1.691, 95%CI: 1.306–2.189, p < 0.001; HR = 2.019, 95%CI: 1.775–2.296, p < 0.001, respectively). Conclusions: The present meta-analysis demonstrated that elevated expression of S6K1, p-S6K1, or p-S6 might indicate worse prognosis of patients with solid tumors, and supported a promising clinical test to predict solid tumor prognosis based on the level of S6K1 pathway.
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Affiliation(s)
- Shuo Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Binwu Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Songfeng Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weijian Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Siersbæk R, Kumar S, Carroll JS. Signaling pathways and steroid receptors modulating estrogen receptor α function in breast cancer. Genes Dev 2018; 32:1141-1154. [PMID: 30181360 PMCID: PMC6120708 DOI: 10.1101/gad.316646.118] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Estrogen receptor α (ER) is the major driver of ∼75% of breast cancers, and multiple ER targeting drugs are routinely used clinically to treat patients with ER+ breast cancer. However, many patients relapse on these targeted therapies and ultimately develop metastatic and incurable disease, and understanding the mechanisms leading to drug resistance is consequently of utmost importance. It is now clear that, in addition to estrogens, ER function is modulated by other steroid receptors and multiple signaling pathways (e.g., growth factor and cytokine signaling), and many of these pathways affect drug resistance and patient outcome. Here, we review the mechanisms through which these pathways impact ER function and drug resistance as well as discuss the clinical implications.
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Affiliation(s)
- Rasmus Siersbæk
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| | - Sanjeev Kumar
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
- Addenbrookes Hospital, Cambridge CB2 0QQ, United Kingdom
| | - Jason S Carroll
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, United Kingdom
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Rocca A, Maltoni R, Bravaccini S, Donati C, Andreis D. Clinical utility of fulvestrant in the treatment of breast cancer: a report on the emerging clinical evidence. Cancer Manag Res 2018; 10:3083-3099. [PMID: 30214302 PMCID: PMC6124791 DOI: 10.2147/cmar.s137772] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Fulvestrant is the first selective estrogen receptor (ER) downregulator available in clinical practice. It is a pure antiestrogen with no agonistic effects, leading to degradation of ER alpha, with activity in tamoxifen-resistant breast cancer (BC) models. Pharmacokinetic and pharmacodynamic studies and several postmarketing clinical trials led to the definition of the optimal dose at 500 mg intramuscularly on days 1, 15, and 29 and then every 28 days. Targeting ER alpha, fulvestrant is a cornerstone of treatment in luminal BCs, whose growth is largely driven by the ER pathway. In endocrine therapy-naïve patients with hormone receptor-positive, HER2− advanced BC (ABC), fulvestrant yielded significantly longer progression-free survival compared to anastrozole in the Phase III FALCON study. Due to its mechanism of action and pharmacokinetic properties, fulvestrant is an ideal backbone for combination therapies. Preclinical studies have shown synergism with drugs acting on signaling pathways involved in the development of endocrine resistance, among which the cyclin D/cyclin-dependent kinase 4-6/retinoblastoma pathway and the phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin pathway, contributing to overcoming or delaying endocrine resistance. In the Phase III PALOMA-3 trial, a combination of the cyclin-dependent kinase 4/6 inhibitor palbociclib with fulvestrant significantly improved progression-free survival over fulvestrant alone in women with hormone receptor positive, HER2− ABC progressing during prior endocrine therapy. This led to approval of the combination in this clinical setting. Similar results were obtained with abemaciclib and ribociclib. Combination with pan-PI3K inhibitors, though showing some efficacy, was hampered by the toxicity of these agents, and studies in combinations with more selective inhibitors of the α-catalytic subunit of PI3K are ongoing. Fulvestrant has shown partial activity also in patients with tumors harboring mutations of the ESR1 gene. It is thus a key drug in the treatment of ABC, whose role in combination with new targeted agents is still evolving.
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Affiliation(s)
- Andrea Rocca
- Breast Cancer Unit, Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS,
| | - Roberta Maltoni
- Breast Cancer Unit, Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS,
| | - Sara Bravaccini
- Cyto-Histo-Molecular Pathology, Bioscience Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS
| | - Caterina Donati
- Pharmacy, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS
| | - Daniele Andreis
- Unit of Biostatistics and Clinical Trials, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
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Kosach V, Shkarina K, Kravchenko A, Tereshchenko Y, Kovalchuk E, Skoroda L, Krotevych M, Khoruzhenko A. Nucleocytoplasmic distribution of S6K1 depends on the density and motility of MCF-7 cells in vitro. F1000Res 2018; 7:1332. [PMID: 30705751 PMCID: PMC6343231 DOI: 10.12688/f1000research.15447.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/10/2018] [Indexed: 12/18/2022] Open
Abstract
Background: The ribosomal protein S6 kinase 1 (S6K1) is one of the main components of the mTOR/S6K signal transduction pathway, which controls cellular metabolism, autophagy, growth, and proliferation. Overexpression of S6K1 was detected in tumors of different origin including breast cancer, and correlated with the worse disease outcome. In addition, significant accumulation of S6K1 was found in the nuclei of breast carcinoma cells suggesting the implication of kinase nuclear substrates in tumor progression. However, this aspect of S6K1 functioning is still poorly understood. The main aim of the present work was to study the subcellular localization of S6K1 in breast cancer cells with the focus on cell migration. Methods: Multicellular spheroids of MCF-7 cells were generated using agarose-coated Petri dishes. Cell migration was induced by spheroids seeding onto adhesive growth surface and subsequent cultivation for 24 to 72 hours. The subcellular localization of S6K1 was studied in human normal breast and cancer tissue samples, 2D and 3D MCF-7 cell cultures using immunofluorescence analysis and confocal microscopy. Results: Analysis of histological sections of human breast tissue samples revealed predominantly nuclear localization of S6K1 in breast malignant cells and its mainly cytoplasmic localization in conditionally normal cells. In vitro studies of MCF-7 cells demonstrated that the subcellular localization of S6K1 depends on the cell density in the monolayer culture. S6K1 relocalization from the cytoplasm into the nucleus was detected in MCF-7 cells migrating from multicellular spheroids onto growth surface. Immunofluorescence analysis of S6K1 and immunocoprecipitation assay revealed the colocalization and interaction between S6K1 and transcription factor TBR2 (T-box brain protein 2) in MCF-7 cells. Conclusions: Subcellular localization of S6K1 depends on the density and locomotor activity of the MCF-7 cells.
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Affiliation(s)
- Viktoriia Kosach
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
| | - Kateryna Shkarina
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | - Anastasiia Kravchenko
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | - Yuliia Tereshchenko
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | | | | | | | - Antonina Khoruzhenko
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
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Kosach V, Shkarina K, Kravchenko A, Tereshchenko Y, Kovalchuk E, Skoroda L, Krotevych M, Khoruzhenko A. Nucleocytoplasmic distribution of S6K1 depends on the density and motility of MCF-7 cells in vitro. F1000Res 2018; 7:1332. [PMID: 30705751 PMCID: PMC6343231 DOI: 10.12688/f1000research.15447.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/13/2018] [Indexed: 10/06/2023] Open
Abstract
Background: The ribosomal protein S6 kinase 1 (S6K1) is one of the main components of the mTOR/S6K signal transduction pathway, which controls cellular metabolism, autophagy, growth, and proliferation. Overexpression of S6K1 was detected in tumors of different origin including breast cancer, which was associated with a worse disease outcome. In addition, significant accumulation of S6K1 was found in the nuclei of breast carcinoma cells suggesting the implication of kinase nuclear substrates in tumor progression. However, this aspect of S6K1 functioning is poorly understood. The main aim of the present work was to study the subcellular localization of S6K1 in breast cancer cells with focus on cell migration. Methods: Multicellular spheroids of MCF-7 cells were generated using agarose-coated Petri dishes. Cell migration was initiated by spheroids seeding onto growth surface and subsequent cultivation for 24 and 72 hours. S6K1 subcellular localization was studied in human breast cancer and normal tissue, 2D and 3D MCF-7 cell culture using immunofluorescence analysis and confocal microscopy. Results: Analysis of histological sections of human breast cancer and normal tissue revealed predominantly nuclear localization of S6K1 in breast malignant cells and mainly cytoplasmic one in conditionally normal cells. In vitro studies of MCF-7 cells showed that the subcellular localization of S6K1 depends on the cell density in the monolayer culture. S6K1 relocalization from the cytoplasm into the nucleus was detected in MCF-7 cells migrating from multicellular spheroids onto growth surface. Immunofluorescence analysis of S6K1 and immunocoprecipitation assay revealed the colocalization and interaction between S6K1 and transcription factor TBR2 (T-box brain protein 2) in MCF-7 cells. Bioinformatical analysis revealed existence of several phosphorylation sites in TBR2 for S6K1 suggesting that TBR2 can be a target for phosphorylation and regulation by S6K1. Conclusions: Subcellular localization of S6K1 depends on the density and locomotor activity of the MCF-7 cells.
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Affiliation(s)
- Viktoriia Kosach
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
| | - Kateryna Shkarina
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | - Anastasiia Kravchenko
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | - Yuliia Tereshchenko
- Educational and Scientific Center , Taras Shevchenko National University of Kyiv, Kyiv, 03022, Ukraine
| | | | | | | | - Antonina Khoruzhenko
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine
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Wang K, Li J, Xiong YF, Zeng Z, Zhang X, Li HY. A Potential Prognostic Long Noncoding RNA Signature to Predict Recurrence among ER-positive Breast Cancer Patients Treated with Tamoxifen. Sci Rep 2018; 8:3179. [PMID: 29453409 PMCID: PMC5816619 DOI: 10.1038/s41598-018-21581-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/02/2018] [Indexed: 12/14/2022] Open
Abstract
Limited predictable long noncoding RNA (lncRNA) signature was reported in tamoxifen resistance among estrogen receptor (ER)-positive breast cancer (BC) patients. The aim of this study was to identify and assess prognostic lncRNA signature to predict recurrence among ER-positive BC patients treated with tamoxifen. Cohorts from Gene Expression Omnibus (GEO) (n = 298) and The Cancer Genome Atlas (TCGA) (n = 160) were defined as training and validation cohort, respectively. BC relapse associated lnRNAs was identify within training cohort, and the predictable value of recurrence was assessed in both cohorts. A total of 11lncRNAs were recognized to be associated with relapse free survival (RFS) of ER-positive BC patients receiving tamoxifen, who were divided into low-risk and high-risk group on basis of relapse risk scores (RRS). Multivariate cox regression analyses revealed that the RRS is an independent prognostic biomarker in the prediction of ER-positive BC patients' survival. GSEA indicated that high-risk group was associated with several signaling pathways in processing of BC recurrence and metastasis such as PI3K-Akt and Wnt signaling. Our 11-lncRNA based classifier is a reliable prognostic and predictive tool for disease relapse in BC patients receiving tamoxifen.
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Affiliation(s)
- Kang Wang
- Department of the Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China
| | - Jie Li
- Department of the Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China
| | - Yong-Fu Xiong
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China
| | - Zhen Zeng
- Department of the Breast and Thyroid Surgery, The Traditional Chinese Medicine Hospital, Chongqing, 400021, China
| | - Xiang Zhang
- Department of the Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China.
| | - Hong-Yuan Li
- Department of the Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China.
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Cuesta R, Holz MK. RSK-mediated down-regulation of PDCD4 is required for proliferation, survival, and migration in a model of triple-negative breast cancer. Oncotarget 2018; 7:27567-83. [PMID: 27028868 PMCID: PMC5053672 DOI: 10.18632/oncotarget.8375] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 03/14/2016] [Indexed: 12/22/2022] Open
Abstract
The p90 ribosomal S6 kinase (RSK) is a family of MAPK-activated serine/threonine kinases (RSK1-4) whose expression and/or activity are deregulated in several cancers, including breast cancer. Up-regulation of RSKs promotes cellular processes that drive tumorigenesis in Triple Negative Breast Cancer (TNBC) cells. Although RSKs regulate protein synthesis in certain cell types, the role of RSK-mediated translational control in oncogenic progression has yet to be evaluated. We demonstrate that proliferation and migration of TNBC MDA-MB-231 cells, unlike ER/PR-positive MCF7 cells, rely on RSK activity. We show that RSKs regulate the activities of the translation initiation factor eIF4B and the translational repressor PDCD4 in TNBC cells with up-regulated MAPK pathway, but not in breast cancer cells with hyperactivated PI3K/Akt/mTORC1 pathway. These results identify PDCD4 as a novel RSK substrate. We demonstrate that RSK-mediated phosphorylation of PDCD4 at S76 promotes PDCD4 degradation. Low PDCD4 levels reduce PDCD4 inhibitory effect on the translation initiation factor eIF4A, which increases translation of "eIF4A sensitive" mRNAs encoding factors involved in cell cycle progression, survival, and migration. Consequently, low levels of PDCD4 favor proliferation and migration of MDA-MB-231 cells. These results support the therapeutic use of RSK inhibitors for treatment of TNBC with deregulated MAPK/RSK pathway.
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Affiliation(s)
- Rafael Cuesta
- Department of Biology, Stern College for Women of Yeshiva University, New York, New York 10016, USA
| | - Marina K Holz
- Department of Biology, Stern College for Women of Yeshiva University, New York, New York 10016, USA.,Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Geter PA, Ernlund AW, Bakogianni S, Alard A, Arju R, Giashuddin S, Gadi A, Bromberg J, Schneider RJ. Hyperactive mTOR and MNK1 phosphorylation of eIF4E confer tamoxifen resistance and estrogen independence through selective mRNA translation reprogramming. Genes Dev 2017; 31:2235-2249. [PMID: 29269484 PMCID: PMC5769768 DOI: 10.1101/gad.305631.117] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/20/2017] [Indexed: 01/04/2023]
Abstract
Geter et al. show that tamoxifen resistance involves selective mRNA translational reprogramming to an anti-estrogen state by Runx2 and other mRNAs. Tamoxifen-resistant translational reprogramming is shown to be mediated by increased expression of eIF4E and its increased availability by hyperactive mTOR and to require phosphorylation of eIF4E at Ser209 by increased MNK activity. The majority of breast cancers expresses the estrogen receptor (ER+) and is treated with anti-estrogen therapies, particularly tamoxifen in premenopausal women. However, tamoxifen resistance is responsible for a large proportion of breast cancer deaths. Using small molecule inhibitors, phospho-mimetic proteins, tamoxifen-sensitive and tamoxifen-resistant breast cancer cells, a tamoxifen-resistant patient-derived xenograft model, patient tumor tissues, and genome-wide transcription and translation studies, we show that tamoxifen resistance involves selective mRNA translational reprogramming to an anti-estrogen state by Runx2 and other mRNAs. Tamoxifen-resistant translational reprogramming is shown to be mediated by increased expression of eIF4E and its increased availability by hyperactive mTOR and to require phosphorylation of eIF4E at Ser209 by increased MNK activity. Resensitization to tamoxifen is restored only by reducing eIF4E expression or mTOR activity and also blocking MNK1 phosphorylation of eIF4E. mRNAs specifically translationally up-regulated with tamoxifen resistance include Runx2, which inhibits ER signaling and estrogen responses and promotes breast cancer metastasis. Silencing Runx2 significantly restores tamoxifen sensitivity. Tamoxifen-resistant but not tamoxifen-sensitive patient ER+ breast cancer specimens also demonstrate strongly increased MNK phosphorylation of eIF4E. eIF4E levels, availability, and phosphorylation therefore promote tamoxifen resistance in ER+ breast cancer through selective mRNA translational reprogramming
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Affiliation(s)
- Phillip A Geter
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Amanda W Ernlund
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Sofia Bakogianni
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Amandine Alard
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Rezina Arju
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Shah Giashuddin
- New York Presbyterian-Brooklyn Methodist Hospital, Brooklyn, New York 11215, USA
| | - Abhilash Gadi
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA
| | - Jacqueline Bromberg
- Memorial Sloan Kettering Cancer Institute, New York, New York 10016 USA.,Perlmutter Cancer Center, New York University School of Medicine, New York, New York 10016 USA
| | - Robert J Schneider
- Department of Microbiology, Alexandria Center for Life Science, New York University School of Medicine, New York, New York 10016, USA.,Memorial Sloan Kettering Cancer Institute, New York, New York 10016 USA.,Perlmutter Cancer Center, New York University School of Medicine, New York, New York 10016 USA
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47
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Bostner J, Alayev A, Berman AY, Fornander T, Nordenskjöld B, Holz MK, Stål O. Raptor localization predicts prognosis and tamoxifen response in estrogen receptor-positive breast cancer. Breast Cancer Res Treat 2017; 168:17-27. [PMID: 29128895 PMCID: PMC5847064 DOI: 10.1007/s10549-017-4508-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/12/2017] [Indexed: 01/08/2023]
Abstract
Purpose Deregulated PI3K/mTOR signals can promote the growth of breast cancer and contribute to endocrine treatment resistance. This report aims to investigate raptor and its intracellular localization to further understand its role in ER-positive breast cancer. Methods Raptor protein expression was evaluated by immunohistochemistry in 756 primary breast tumors from postmenopausal patients randomized to tamoxifen or no tamoxifen. In vitro, the MCF7 breast cancer cell line and tamoxifen-resistant MCF7 cells were studied to track the raptor signaling changes upon resistance, and raptor localization in ERα-positive cell lines was compared with that in ERα-negative cell lines. Results Raptor protein expression in the nucleus was high in ER/PgR-positive and HER2-negative tumors with low grade, features associated with the luminal A subtype. Presence of raptor in the nucleus was connected with ERα signaling, here shown by a coupled increase of ERα phosphorylation at S167 and S305 with accumulation of nuclear raptor. In addition, the expression of ERα-activated gene products correlated with nuclear raptor. Similarly, in vitro we observed raptor in the nucleus of ERα-positive, but not of ER-negative cells. Interestingly, raptor localized to the nucleus could still be seen in tamoxifen-resistant MCF7 cells. The clinical benefit from tamoxifen was inversely associated with an increase of nuclear raptor. High cytoplasmic raptor expression indicated worse prognosis on long-term follow-up. Conclusion We present a connection between raptor localization to the nucleus and ERα-positive breast cancer, suggesting raptor as a player in stimulating the growth of the luminal A subtype and a possible target along with endocrine treatment. Electronic supplementary material The online version of this article (10.1007/s10549-017-4508-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Josefine Bostner
- Department of Clinical and Experimental Medicine, and Department of Oncology, Linköping University, Linköping, Sweden.
| | - Anya Alayev
- Department of Biology, Yeshiva University, New York, NY, USA
| | - Adi Y Berman
- Department of Biology, Yeshiva University, New York, NY, USA
| | - Tommy Fornander
- Department of Oncology, Karolinska University Hospital, Stockholm South General Hospital, Karolinska Institute, Stockholm, Sweden
| | - Bo Nordenskjöld
- Department of Clinical and Experimental Medicine, and Department of Oncology, Linköping University, Linköping, Sweden
| | - Marina K Holz
- Department of Biology, Yeshiva University, New York, NY, USA.,Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA.,Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Olle Stål
- Department of Clinical and Experimental Medicine, and Department of Oncology, Linköping University, Linköping, Sweden
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48
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Park J, Lee Y. Hypoxia induced phosphorylation of estrogen receptor at serine 118 in the absence of ligand. J Steroid Biochem Mol Biol 2017; 174:146-152. [PMID: 28847747 DOI: 10.1016/j.jsbmb.2017.08.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 10/19/2022]
Abstract
The estrogen receptor (ER) plays an important role in breast cancer development and progression. Hypoxia modulates the level of ERα expression and induces ligand-independent transcriptional activation of ERα, which is closely related with the biology of breast carcinomas. Since phosphorylation itself affects the transcriptional activity and stabilization of ERα, we examined changes in ERα phosphorylation under hypoxic conditions. Hypoxia induced phosphorylation of ERα at serine residue 118 (S118) in the absence of estrogen through the mitogen-activated protein kinase (MAPK)/ERK1/2 pathway. Cell proliferation was significantly decreased under normoxia or hypoxia when ERα harboring the S118A mutation was overexpressed. Our previous studies showed that ER degradation is the most prominent phenomenon under hypoxia. E2-induced ER protein downregulation is dependent on phosphorylation of S118. However, hypoxia-induced ERα degradation did not involve S118 phosphorylation. Our study implies the existence of a differential mechanism between E2 and hypoxia-mediated ERα protein degradation. Understanding the mechanistic behavior of ER under hypoxia will likely facilitate understanding of endocrine therapy resistance and development of treatment strategies for breast cancer.
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Affiliation(s)
- Joonwoo Park
- College of Life Science, Department of Integrated Bioscience and Biotechnology, Sejong University, Seoul 143-747, South Korea
| | - YoungJoo Lee
- College of Life Science, Department of Integrated Bioscience and Biotechnology, Sejong University, Seoul 143-747, South Korea.
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49
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Chen Y, Britton D, Wood ER, Brantley S, Magliocco A, Pike I, Koomen JM. Quantitative proteomics of breast tumors: Tissue quality assessment to clinical biomarkers. Proteomics 2017; 17. [PMID: 28127872 DOI: 10.1002/pmic.201600335] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/11/2016] [Accepted: 01/23/2017] [Indexed: 01/07/2023]
Abstract
Liquid chromatography-selected reaction monitoring mass spectrometry (LC-SRM) is not only a proven tool for clinical chemistry, but also a versatile method to enhance the capability to quantify biomarkers for tumor biology research. As the treatment of cancer continues to evolve, the ability to assess multiple biomarkers to assign cancer phenotypes based on the genetic background and the signaling of the individual tumor becomes paramount to our ability to treat the patient. In breast cancer, the American Society of Clinical Oncology has defined biomarkers for patient assessment to guide selection of therapy: estrogen receptor, progesterone receptor, and the HER2/Neu receptor tyrosine kinase; therefore, these proteins were selected for LC-SRM assay development. Detailed molecular characterization of these proteins is necessary for patient treatment, so expression and phosphorylation assays have been developed and applied. In addition, other LC-SRM assays were developed to further evaluate tumor biology (e.g. Ki-67 for proliferation and vimentin for tumor aggressiveness related to the epithelial-to-mesenchymal transition). These measurements combined with biomarkers for tissue quality and histological content are implemented in a three-tier multiplexed assay platform, which is translated from cell line models into frozen tumor tissues banked from breast cancer patients.
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Affiliation(s)
- Yi Chen
- Molecular Oncology, Moffitt Cancer Center, Tampa, FL, USA
| | | | | | | | | | - Ian Pike
- Proteome Sciences plc., Cobham, UK
| | - John M Koomen
- Molecular Oncology, Moffitt Cancer Center, Tampa, FL, USA.,Chemical Biology and Molecular Medicine, Moffitt Cancer Center, Tampa, FL, USA
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50
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Park J, Bui PTC, Song H, Kim SK, Rhee DK, Kim EY, Rhyu MR, Lee MS, Lee YJ. Ginseng on Nuclear Hormone Receptors. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:1147-1156. [DOI: 10.1142/s0192415x17500628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The first record of ginseng use dates back over two millennia, and ginseng is now popular in more than 35 countries. Ginsenosides are the pharmacological constituents responsible for the beneficial effects of ginseng. There is increasing evidence that ginseng and its bioactive ingredients are involved in the regulation of nuclear receptors, molecules that act in response to the specific binding of hormones, which link to a diverse array of signaling pathways, such as the ERK and PI3K/Akt pathways. Knowledge of the mechanism of how ginseng mediates these complexes is essential for the development of multi-target phytomedicine as possible therapy for different diseases. Here, we discuss the literature on the effects of ginseng and its constituents on estrogen, glucocorticoid, peroxisome proliferator-activated, and androgen nuclear hormone receptors, as well as how ginseng and its constituents exert their biological function in the treatment of cancer, obesity, and cardiovascular and neurological disorders. The accumulated results definitely show that the nuclear receptors are cellular targets of ginsenosides, but more rigorous data are required to establish and provide a scientific basis to confirm the suggested efficacy of ginseng or products with ginsenosides.
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Affiliation(s)
- Joonwoo Park
- Department of Bioscience and Biotechnology, College of Life Science, Sejong University, Kwangjingu, Kunjadong, Seoul 04310, Republic of Korea
| | - Phuong T. C. Bui
- Department of Bioscience and Biotechnology, College of Life Science, Sejong University, Kwangjingu, Kunjadong, Seoul 04310, Republic of Korea
| | - Heewon Song
- Department of Bioscience and Biotechnology, College of Life Science, Sejong University, Kwangjingu, Kunjadong, Seoul 04310, Republic of Korea
| | - Si-Kwan Kim
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, South Korea
| | - Dong-Kwon Rhee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Young Kim
- Division of Functional Food Research, Korea Food Research Institute, Gyeonggi-do 13539, Republic of Korea
| | - Mee-Ra Rhyu
- Division of Functional Food Research, Korea Food Research Institute, Gyeonggi-do 13539, Republic of Korea
| | - Myeong Soo Lee
- Clinical Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Young Joo Lee
- Department of Bioscience and Biotechnology, College of Life Science, Sejong University, Kwangjingu, Kunjadong, Seoul 04310, Republic of Korea
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