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Yan S, Ji J, Zhang Z, Imam M, Chen H, Zhang D, Wang J. Targeting the crosstalk between estrogen receptors and membrane growth factor receptors in breast cancer treatment: Advances and opportunities. Biomed Pharmacother 2024; 175:116615. [PMID: 38663101 DOI: 10.1016/j.biopha.2024.116615] [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: 01/10/2024] [Revised: 04/06/2024] [Accepted: 04/17/2024] [Indexed: 06/03/2024] Open
Abstract
Estrogens play a critical role in the initiation and progression of breast cancer. Estrogen receptor (ER)α, ERβ, and G protein-coupled estrogen receptor are the primary receptors for estrogen in breast cancer. These receptors are mainly activated by binding with estrogens. The crosstalk between ERs and membrane growth factor receptors creates additional pathways that amplify the effects of their ligands and promote tumor growth. This crosstalk may cause endocrine therapy resistance in ERα-positive breast cancer. Furthermore, this may explain the resistance to anti-human epidermal growth factor receptor-2 (HER2) treatment in ERα-/HER2-positive breast cancer and chemotherapy resistance in triple-negative breast cancer. Accordingly, it is necessary to understand the complex crosstalk between ERs and growth factor receptors. In this review, we delineate the crosstalk between ERs and membrane growth factor receptors in breast cancer. Moreover, this review highlights the current progress in clinical treatment and discusses how pharmaceuticals target the crosstalk. Lastly, we discuss the current challenges and propose potential solutions regarding the implications of targeting crosstalk via pharmacological inhibition. Overall, the present review provides a landscape of the crosstalk between ERs and membrane growth factor receptors in breast cancer, along with valuable insights for future studies and clinical treatments using a chemotherapy-sparing regimen to improve patient quality of life.
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Affiliation(s)
- Shunchao Yan
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China.
| | - Jiale Ji
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - Zhijie Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - Murshid Imam
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - Hong Chen
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - Duo Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - Jinpeng Wang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110022, China
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Zha JM, Zhang M, Wang T, Li HS, Ban QY, Liu M, Jiang XX, Guo SY, Wang J, Zhou YR, Liu YH, He WQ, Xu H. Association of Overweight and Inflammatory Indicators with Breast Cancer: A Cross-Sectional Study in Chinese Women. Int J Womens Health 2024; 16:783-795. [PMID: 38737496 PMCID: PMC11086397 DOI: 10.2147/ijwh.s428696] [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: 07/31/2023] [Accepted: 04/26/2024] [Indexed: 05/14/2024] Open
Abstract
Objective This cross-sectional study aimed to explore the association of overweight and inflammatory indicators with breast cancer risk in Chinese patients. Methods Weight, height, and peripheral blood inflammatory indicators, including white blood cell count (WBC), neutrophil count (NE), lymphocyte count (LY), platelet count (PLT) and the concentration of hypersensitivity C-reactive protein (hsCRP), were collected in 383 patients with benign breast lumps (non-cancer) and 358 patients with malignant breast tumors (cancer) at the First Affiliated Hospital of Soochow University, China, from March 2018 to July 2020. Body mass index (BMI), neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR) and systemic immune-inflammation index (SII) were determined according to the ratio equation. The correlations among overweight, inflammatory indicators, and the proportion of non-cancer or cancer cases were analyzed. Results BMI is associated with an increased breast cancer risk. Compared with non-cancer patients, the average WBC count, NE count, NLR, and level of hsCRP were significantly higher in cancer patients. The level of hsCRP was closely associated with the size of malignant breast tumors. Conclusion We conclude that overweight and high levels of hsCRP may serve as putative risk factors for malignant breast tumors in Chinese women.
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Affiliation(s)
- Juan-Min Zha
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
| | - Mei Zhang
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
| | - Tao Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Hua-Shan Li
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Quan-Yao Ban
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
| | - Mei Liu
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
| | - Xue-Xue Jiang
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
| | - Shi-Ying Guo
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Jing Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Ya-Ru Zhou
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Yu-Hong Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Wei-Qi He
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Cambridge-Suda (CAM-SU) Genomic Resource Center, Medical College of Soochow University, Suzhou, Jiangsu, People’s Republic of China
| | - Hong Xu
- Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, People’s Republic of China
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Sekar AP, Nurmala S, Matsuura E, Tan XW, Rahmasari R, Sauriasari R. Estrogen Receptor Is Required for Metformin-Induced Apoptosis in Breast Cancer Cells Under Hyperglycemic Conditions. Breast Cancer (Auckl) 2024; 18:11782234241240173. [PMID: 38779416 PMCID: PMC11110926 DOI: 10.1177/11782234241240173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 02/29/2024] [Indexed: 05/25/2024] Open
Abstract
Backgrounds About 25% to 30% of estrogen receptor (ER)-positive breast cancer patients develop resistance to endocrine therapy. Human epidermal growth factor receptor 2 (HER2) has been shown to cooperate with several growth factors that regulate cellular energy metabolism, including the insulin-like growth factor 1 receptor (IGF-1R). Objective As the first-line therapy for type 2 diabetes mellitus (T2DM) patients, metformin is widely known to inhibit the metabolic reprogramming of cancer cells. This study aims to investigate metformin's efficacy in inhibiting endocrine resistance related to genes regulating energy metabolism in both ER-positive and ER-negative breast cancer cell lines under hyperglycemic conditions. Design and methods MDA-MB-361 (ER-positive, HER2-positive) and SKBR3 (ER-negative, HER2-positive) cancer cell lines were used to represent ER status. Cell viability and cell survival rate were measured using the colorimetric assay of Cell Counting Kit-8. All mRNA levels were quantified using real-time quantitative polymerase chain reaction preceded by reverse transcription. A P value of <.05 was considered statistically significant. Results Unlike MDA-MB-361, SKBR3 were found to acquire resistance upon metformin treatment in hyperglycemic conditions. Moreover, the mRNA expression of IGF-1R and its downstream signaling, such as the mammalian target of rapamycin (mTOR), was not affected by metformin. Meanwhile, the mRNA expression level of ribosomal S6 kinase 1 (S6K1) was upregulated, whereas forkhead box O1 (FOXO1) was downregulated after metformin treatment in hyperglycemic conditions. Conclusions This preliminary study suggests that an alternative pathway of metformin resistance may exist in the absence of ERα. Therefore, relying solely on metformin may be inadequate to inhibit the aggressiveness of breast cancer cells.
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Affiliation(s)
- Andisyah Putri Sekar
- Pharmacology and Clinical Pharmacy Laboratory, Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia
| | - Septia Nurmala
- Pharmacology and Clinical Pharmacy Laboratory, Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia
| | - Eiji Matsuura
- Graduate School of Interdiscplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Xian Wen Tan
- Collaborative Research Center for Okayama Medical Innovation Center & Department of Cell Chemistry, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Ratika Rahmasari
- Microbiology and Biotechnology Laboratory, Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia
| | - Rani Sauriasari
- Pharmacology and Clinical Pharmacy Laboratory, Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia
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Choi JW, Kim SW, Kim HS, Kang MJ, Kim SA, Han JY, Kim H, Ku SY. Effects of Melatonin, GM-CSF, IGF-1, and LIF in Culture Media on Embryonic Development: Potential Benefits of Individualization. Int J Mol Sci 2024; 25:751. [PMID: 38255823 PMCID: PMC10815572 DOI: 10.3390/ijms25020751] [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: 11/21/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
The implantation of good-quality embryos to the receptive endometrium is essential for successful live birth through in vitro fertilization (IVF). The higher the quality of embryos, the higher the live birth rate per cycle, and so efforts have been made to obtain as many high-quality embryos as possible after fertilization. In addition to an effective controlled ovarian stimulation process to obtain high-quality embryos, the composition of the embryo culture medium in direct contact with embryos in vitro is also important. During embryonic development, under the control of female sex hormones, the fallopian tubes and endometrium create a microenvironment that supplies the nutrients and substances necessary for embryos at each stage. During this process, the development of the embryo is finely regulated by signaling molecules, such as growth factors and cytokines secreted from the epithelial cells of the fallopian tube and uterine endometrium. The development of embryo culture media has continued since the first successful human birth through IVF in 1978. However, there are still limitations to mimicking a microenvironment similar to the reproductive organs of women suitable for embryo development in vitro. Efforts have been made to overcome the harsh in vitro culture environment and obtain high-quality embryos by adding various supplements, such as antioxidants and growth factors, to the embryo culture medium. Recently, there has been an increase in the number of studies on the effect of supplementation in different clinical situations such as old age, recurrent implantation failure (RIF), and unexplained infertility; in addition, anticipation of the potential benefits from individuation is rising. This article reviews the effects of representative supplements in culture media on embryo development.
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Affiliation(s)
- Jung-Won Choi
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Sung-Woo Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hee-Sun Kim
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Moon-Joo Kang
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Sung-Ah Kim
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Ji-Yeon Han
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hoon Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Seung-Yup Ku
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
- Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea
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Zhang X, Varma S, Yee D. Suppression of Insulin Receptor Substrate 1 Inhibits Breast Cancer Growth In Vitro and in Female Athymic Mice. Endocrinology 2023; 164:bqac214. [PMID: 36610717 PMCID: PMC10091499 DOI: 10.1210/endocr/bqac214] [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: 09/02/2022] [Revised: 12/23/2022] [Accepted: 12/23/2022] [Indexed: 01/09/2023]
Abstract
Targeting the type I insulin-like growth factor receptor (IGF-IR) has not been successful in breast cancer. Data suggest the highly homologous insulin receptor (IR) may be an alternate growth stimulatory pathway used by cancer cells. Since both receptors phosphorylate the insulin receptor substrate 1 (IRS-1) protein as an immediate consequence of ligand binding, disruption of both receptors could be accomplished by suppression of IRS-1. IRS-1 gene deletion by CRISPR/Cas9 editing resulted in suppression of IGF-I, insulin, and estrogen-stimulated growth in hormone-dependent MCF-7L breast cancer cells. A doxycycline-inducible IRS-1 shRNA lentiviral construct was also used to infect MCF-7L breast cancer cells. IRS-1 shRNA downregulation resulted in decreased responses to IGF-I, insulin, and estradiol in monolayer and anchorage-independent growth assays. Decreased IRS-1 levels also suppressed estradiol-stimulated gene expression and estrogen receptor binding to DNA. Xenograft growth was also inhibited by induction of IRS-1 shRNA. These data show that IRS-1 is a critical regulator of endocrine responsive breast cancer. Efforts to target this adaptor protein could have broader growth inhibitory effects and receptor targeting.
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Affiliation(s)
- Xihong Zhang
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Sidhant Varma
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Douglas Yee
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
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Lee JS, Tocheny CE, Shaw LM. The Insulin-like Growth Factor Signaling Pathway in Breast Cancer: An Elusive Therapeutic Target. LIFE (BASEL, SWITZERLAND) 2022; 12:life12121992. [PMID: 36556357 PMCID: PMC9782138 DOI: 10.3390/life12121992] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/30/2022]
Abstract
In this review, we provide an overview of the role of the insulin-like growth factor (IGF) signaling pathway in breast cancer and discuss its potential as a therapeutic target. The IGF pathway ligands, IGF-1 and IGF-2, and their receptors, primarily IGF-1R, are important for normal mammary gland biology, and dysregulation of their expression and function drives breast cancer risk and progression through activation of downstream signaling effectors, often in a subtype-dependent manner. The IGF signaling pathway has also been implicated in resistance to current therapeutic strategies, including ER and HER2 targeting drugs. Unfortunately, efforts to target IGF signaling for the treatment of breast cancer have been unsuccessful, due to a number of factors, most significantly the adverse effects of disrupting IGF signaling on normal glucose metabolism. We highlight here the recent discoveries that provide enthusiasm for continuing efforts to target IGF signaling for the treatment of breast cancer patients.
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Affiliation(s)
| | | | - Leslie M. Shaw
- Correspondence: ; Tel.: +1-508-856-8675; Fax: +1-508-856-1310
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Gremke N, Griewing S, Kalder M, Kostev K. Positive association between body height and breast cancer prevalence: a retrospective study with 135,741 women in Germany. Breast Cancer Res Treat 2022; 196:349-354. [PMID: 36085535 PMCID: PMC9581809 DOI: 10.1007/s10549-022-06730-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/28/2022] [Indexed: 12/01/2022]
Abstract
Purpose The aim of this study was to analyze the prevalence of breast cancer in relation to body height and to investigate associations between body height and breast cancer in Germany. Methods This retrospective cohort study included 135,741 adult women followed in one of 161 gynecology practices in Germany between January 2019 and December 2021. The 3 year prevalence of breast cancer (ICD-10: C50) during the study period was shown in relation to body height, which was included in this study as a five-category variable for women: ≤ 160 cm, 161–165 cm, 166–170 cm, 171–175 cm, > 175 cm. The associations between height and breast cancer were analyzed using logistic regression models adjusted for age and BMI. Results The prevalence of breast cancer increased from 5.1% in women ≤ 160 cm to 6.8% in women > 175 cm in the age group 51–60, and from 9.2% in women ≤ 160 cm to 12.2% in women 171–175 cm in the age group > 60 years. The OR for breast cancer was 1.18 (95% CI 1.12–1.24) for every 10 cm increase in height. Compared to height ≤ 160 cm, the OR for height 166–170 cm was 1.26 (1.15–1.39), for 171–175 cm 1.43 (1.27–1.61), and for > 175 cm 1.49 (1.28–1.74). Conclusion The results of this study suggest that greater body height in women is significantly related to an increased breast cancer risk.
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Affiliation(s)
- Niklas Gremke
- Department of Gynecology and Obstetrics, University Hospital Marburg, Philipps-University Marburg, Baldingerstraße, 35043, Marburg, Germany.
| | - Sebastian Griewing
- Department of Gynecology and Obstetrics, University Hospital Marburg, Philipps-University Marburg, Baldingerstraße, 35043, Marburg, Germany
| | - Matthias Kalder
- Department of Gynecology and Obstetrics, University Hospital Marburg, Philipps-University Marburg, Baldingerstraße, 35043, Marburg, Germany
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Elangovan A, Hooda J, Savariau L, Puthanmadhomnarayanan S, Yates ME, Chen J, Brown DD, McAuliffe PF, Oesterreich S, Atkinson JM, Lee AV. Loss of E-cadherin Induces IGF1R Activation and Reveals a Targetable Pathway in Invasive Lobular Breast Carcinoma. Mol Cancer Res 2022; 20:1405-1419. [PMID: 35665642 PMCID: PMC9444924 DOI: 10.1158/1541-7786.mcr-22-0090] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/23/2022] [Accepted: 06/02/2022] [Indexed: 01/30/2023]
Abstract
No special-type breast cancer [NST; commonly known as invasive ductal carcinoma (IDC)] and invasive lobular carcinoma (ILC) are the two major histological subtypes of breast cancer with significant differences in clinicopathological and molecular characteristics. The defining pathognomonic feature of ILC is loss of cellular adhesion protein, E-cadherin (CDH1). We have previously shown that E-cadherin functions as a negative regulator of the IGF1R and propose that E-cadherin loss in ILC sensitizes cells to growth factor signaling that thus alters their sensitivity to growth factor-signaling inhibitors and their downstream activators. To investigate this potential therapeutic vulnerability, we generated CRISPR-mediated CDH1 knockout (CDH1 KO) IDC cell lines (MCF7, T47D, and ZR75.1) to uncover the mechanism by which loss of E-cadherin results in IGF pathway activation. CDH1 KO cells demonstrated enhanced invasion and migration that was further elevated in response to IGF1, serum and collagen I. CDH1 KO cells exhibited increased sensitivity to IGF resulting in elevated downstream signaling. Despite minimal differences in membranous IGF1R levels between wild-type (WT) and CDH1 KO cells, significantly higher ligand-receptor interaction was observed in the CDH1 KO cells, potentially conferring enhanced downstream signaling activation. Critically, increased sensitivity to IGF1R, PI3K, Akt, and MEK inhibitors was observed in CDH1 KO cells and ILC patient-derived organoids. IMPLICATIONS Overall, this suggests that these targets require further exploration in ILC treatment and that CDH1 loss may be exploited as a biomarker of response for patient stratification.
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Affiliation(s)
- Ashuvinee Elangovan
- Molecular Genetics and Developmental Biology Graduate Program, University of Pittsburgh School of Medicine, Pittsburgh PA.,Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA
| | - Jagmohan Hooda
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA
| | - Laura Savariau
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA
| | - Susrutha Puthanmadhomnarayanan
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA
| | - Megan E. Yates
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Medical Scientist Training Program, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Jian Chen
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA
| | | | - Priscilla F. McAuliffe
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Department of Surgery, Division of Surgical Oncology, Section of Breast Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Steffi Oesterreich
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA
| | - Jennifer M. Atkinson
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA.,Corresponding Authors: Adrian V. Lee, PhD, , Phone: 4126417724, Fax: 4126416456, Women’s Cancer Research Center, UPMC Hillman Cancer Center, 204 Craft Avenue, Pittsburgh, PA 15213, USA, Jennifer M. Atkinson, PhD, , Phone: 4126417724, Fax: 4126416456, Women’s Cancer Research Center, UPMC Hillman Cancer Center, 204 Craft Avenue, Pittsburgh, PA 15213, USA
| | - Adrian V. Lee
- Women’s Cancer Research Center, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center (HCC), Magee-Womens Research Institute, Pittsburgh, PA.,Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA.,Corresponding Authors: Adrian V. Lee, PhD, , Phone: 4126417724, Fax: 4126416456, Women’s Cancer Research Center, UPMC Hillman Cancer Center, 204 Craft Avenue, Pittsburgh, PA 15213, USA, Jennifer M. Atkinson, PhD, , Phone: 4126417724, Fax: 4126416456, Women’s Cancer Research Center, UPMC Hillman Cancer Center, 204 Craft Avenue, Pittsburgh, PA 15213, USA
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Velesiotis C, Kanellakis M, Vynios DH. Steviol glycosides affect functional properties and macromolecular expression of breast cancer cells. IUBMB Life 2022; 74:1012-1028. [PMID: 36054915 DOI: 10.1002/iub.2669] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/08/2022] [Indexed: 11/11/2022]
Abstract
Steviol glycosides, the active sweet components of stevia plant, have been recently found to possess a number of therapeutic properties, including some recorded anticancer ones against various cancer cell types (breast, ovarian, cervical, pancreatic, and colon cancer). Our aim was to investigate this anticancer potential on the two most commonly used breast cancer cell lines which differ in the phenotype and estrogen receptor (ER) status: the low metastatic, ERα+ MCF-7 and the highly metastatic, ERα-/ERβ+ MDA-MB-231. Specifically, glycosides' effect was studied on cancer cells': (a) viability, (b) functionality (proliferation, migration, and adhesion), and (c) gene expression (mRNA level) of crucial molecules implicated in cancer's pathophysiology. Results showed that steviol glycosides induced cell death in both cell lines, in the first 24 hr, which was in line with the antiapoptotic BCL2 decrease. However, cells that managed to survive showcased diametrically opposite behavior. The low metastatic ERα+ MCF-7 cells acquired an aggressive phenotype, depicted by the upregulation of all receptors and co-receptors (ESR, PGR, AR, GPER1, EGFR, IGF1R, CD44, SDC2, and SDC4), as well as VIM and MMP14. On the contrary, the highly metastatic ERα-/ERβ+ MDA-MB-231 cells became less aggressive as pointed out by the respective downregulation of EGFR, IGF1R, CD44, and SDC2. Changes observed in gene expression were compatible with altered cell functions. Glycosides increased MCF-7 cells migration and adhesion, but reduced MDA-MB-231 cells migratory and metastatic potential. In conclusion, the above data clearly demonstrate that steviol glycosides have different effects on breast cancer cells according to their ER status, suggesting that steviol glycosides might be examined for their potential anticancer activity against breast cancer, especially triple negative breast cancer (TNBC).
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Affiliation(s)
- Christos Velesiotis
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Patras, Greece
| | - Marinos Kanellakis
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Patras, Greece
| | - Demitrios H Vynios
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Patras, Greece
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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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11
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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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12
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Dittmer J. Biological effects and regulation of IGFBP5 in breast cancer. Front Endocrinol (Lausanne) 2022; 13:983793. [PMID: 36093095 PMCID: PMC9453429 DOI: 10.3389/fendo.2022.983793] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
The insulin-like growth factor receptor (IGF1R) pathway plays an important role in cancer progression. In breast cancer, the IGF1R pathway is linked to estrogen-dependent signaling. Regulation of IGF1R activity is complex and involves the actions of its ligands IGF1 and IGF2 and those of IGF-binding proteins (IGFBPs). Six IGFBPs are known that share the ability to form complexes with the IGFs, by which they control the bioavailability of these ligands. Besides, each of the IGFBPs have specific features. In this review, the focus lies on the biological effects and regulation of IGFBP5 in breast cancer. In breast cancer, estrogen is a critical regulator of IGFBP5 transcription. It exerts its effect through an intergenic enhancer loop that is part of the chromosomal breast cancer susceptibility region 2q35. The biological effects of IGFBP5 depend upon the cellular context. By inhibiting or promoting IGF1R signaling, IGFBP5 can either act as a tumor suppressor or promoter. Additionally, IGFBP5 possesses IGF-independent activities, which contribute to the complexity by which IGFBP5 interferes with cancer cell behavior.
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13
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Wajszczyk B, Charzewska J, Godlewski D, Zemła B, Nowakowska E, Kozaczka M, Chilimoniuk M, Pathak DR. Consumption of Dairy Products and the Risk of Developing Breast Cancer in Polish Women. Nutrients 2021; 13:nu13124420. [PMID: 34959971 PMCID: PMC8703752 DOI: 10.3390/nu13124420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 02/06/2023] Open
Abstract
Lack of consistency in the relationship between dairy products consumption and breast cancer (BC) risk motivated us to evaluate this association in a case-control study of BC among Polish women. The study includes 1699 women 26–79 years of age, 823 BC cases identified in Cancer Registries and 876 randomly selected controls from the national population registry. Using a validated, semiquantitative food frequency questionnaire (FFQ), the consumption of dairy products was collected for a time period of 10–15 years prior to BC diagnosis. We used logistic regression, adjusting for potential confounders, to assess the relationship between total dairy consumption as well as individual dairy groups of milk, cottage cheese and hard cheese and BC risk for premenopausal and postmenopausal women. For total consumption, a significant decrease in BC risk was observed with increased consumption of one serving/week, OR trend = 0.98, 2% decrease in risk, for premenopausal women only. For milk, a significant decrease in BC risk was observed for an increase in consumption of one glass/week, OR trend = 0.95, 5% decrease, in both strata of menopause. In contrast, for hard cheese, a significant increase in the risk of 10% was observed only in premenopausal women, OR trend = 1.10. Cottage cheese consumption significantly reduced BC risk by 20%, OR trend = 0.80, for an increase in one serving/week for postmenopausal women only. Our results show that individual dairy products have a statistically significant but bi-directional relationship with BC risk, which differs for premenopausal and postmenopausal women.
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Affiliation(s)
- Bożena Wajszczyk
- Department of Nutrition and Nutritional Value of Food, National Institute of Public Health NIH-National Research Institute, 00-791 Warszawa, Poland
- Correspondence: (B.W.); (J.C.); (D.R.P.)
| | - Jadwiga Charzewska
- Department of Nutrition and Nutritional Value of Food, National Institute of Public Health NIH-National Research Institute, 00-791 Warszawa, Poland
- Correspondence: (B.W.); (J.C.); (D.R.P.)
| | - Dariusz Godlewski
- Center of Cancer Prevention and Epidemiology OPEN, 61-863 Poznań, Poland;
| | | | | | - Maciej Kozaczka
- II Clinic of Radiology and Chemiotherapy, National Institute of Oncology, 44-102 Gliwice, Poland;
| | | | - Dorothy R. Pathak
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
- Correspondence: (B.W.); (J.C.); (D.R.P.)
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14
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Xie J, Kusnadi EP, Furic L, Selth LA. Regulation of mRNA Translation by Hormone Receptors in Breast and Prostate Cancer. Cancers (Basel) 2021; 13:3254. [PMID: 34209750 PMCID: PMC8268847 DOI: 10.3390/cancers13133254] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022] Open
Abstract
Breast and prostate cancer are the second and third leading causes of death amongst all cancer types, respectively. Pathogenesis of these malignancies is characterised by dysregulation of sex hormone signalling pathways, mediated by the estrogen receptor-α (ER) in breast cancer and androgen receptor (AR) in prostate cancer. ER and AR are transcription factors whose aberrant function drives oncogenic transcriptional programs to promote cancer growth and progression. While ER/AR are known to stimulate cell growth and survival by modulating gene transcription, emerging findings indicate that their effects in neoplasia are also mediated by dysregulation of protein synthesis (i.e., mRNA translation). This suggests that ER/AR can coordinately perturb both transcriptional and translational programs, resulting in the establishment of proteomes that promote malignancy. In this review, we will discuss relatively understudied aspects of ER and AR activity in regulating protein synthesis as well as the potential of targeting mRNA translation in breast and prostate cancer.
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Affiliation(s)
- Jianling Xie
- Flinders Health and Medical Research Institute, Flinders University, Bedford Park, SA 5042, Australia
| | - Eric P Kusnadi
- Translational Prostate Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia
- Cancer Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Luc Furic
- Translational Prostate Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia
- Cancer Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Luke A Selth
- Flinders Health and Medical Research Institute, Flinders University, Bedford Park, SA 5042, Australia
- Freemasons Centre for Male Health and Wellbeing, Flinders University, Bedford Park, SA 5042, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia
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15
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Wang H, Shi Y, Chen CH, Wen Y, Zhou Z, Yang C, Sun J, Du G, Wu J, Mao X, Liu R, Chen C. KLF5-induced lncRNA IGFL2-AS1 promotes basal-like breast cancer cell growth and survival by upregulating the expression of IGFL1. Cancer Lett 2021; 515:49-62. [PMID: 34052325 DOI: 10.1016/j.canlet.2021.04.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 12/18/2022]
Abstract
Basal-like breast cancer (BLBC) is the most malignant subtype of breast cancer and has a poor prognosis. Kruppel-like factor 5 (KLF5) is an oncogenic transcription factor in BLBCs. The mechanism by which KLF5 promotes BLBC by regulating the transcription of lncRNAs has not been fully elucidated. In this study, we discovered that lncRNA IGFL2-AS1 is a downstream target gene of KLF5 and that IGFL2-AS1 mediates the pro-proliferation and pro-survival functions of KLF5. Additionally, we demonstrated that IGFL2-AS1 functions by upregulating the transcription of its neighboring gene IGFL1 via two independent mechanisms. On the one hand, nuclear IGFL2-AS1 promotes the formation of a KLF5/TEAD4 transcriptional complex at the IGFL1 gene enhancer. On the other hand, cytoplasmic IGFL2-AS1 inhibits the expression of miR4795-3p, which targets the IGFL1 gene. TNFα induces the expression of IGFL2-AS1 and IGFL1 through KLF5. Taken together, the results of this study indicate that IGFL2-AS1 and IGFL1 may serve as new therapeutic targets for BLBCs.
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Affiliation(s)
- Haixia Wang
- School of Life Science, University of Science & Technology of China, Hefei, 230027, Anhui, China; Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yujie Shi
- Department of Pathology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Chuan-Huizi Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yi Wen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhongmei Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Chuanyu Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Jian Sun
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Guangshi Du
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China
| | - Jiao Wu
- Department of the Second Medical Oncology, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, 650118, China
| | - Xiaoyun Mao
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Rong Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China; Translational Cancer Research Center, Peking University First Hospital, Beijing, 100034, China.
| | - Ceshi Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650201, China; KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China.
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16
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Ianza A, Sirico M, Bernocchi O, Generali D. Role of the IGF-1 Axis in Overcoming Resistance in Breast Cancer. Front Cell Dev Biol 2021; 9:641449. [PMID: 33829018 PMCID: PMC8019779 DOI: 10.3389/fcell.2021.641449] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/04/2021] [Indexed: 12/12/2022] Open
Abstract
Over the last two decades, many studies have demonstrated that the insulin-like growth factor-1 (IGF-1) is involved in a number of patho-physiological processes, as well as in the development of different types of solid tumors, including breast cancer (BC). Preclinical and clinical data showed that IGF-1 receptor (R) is overexpressed and hyper-phosphorylated in several subtypes of BCs. The central implications of this pathway in tumor cell proliferation and metastasis make it an important therapeutic target. Moreover, the IGF-1 axis has shown strong interconnection with estrogen regulation and endocrine therapy, suggesting a possible solution to anti-estrogen resistance. IGF-1R might also interfere with other pivotal therapeutic strategies, such as anti HER2 treatments and mTOR inhibitors; several clinical trials are ongoing evaluating the role of IGF-1R inhibition in modulating resistance mechanisms to target therapies. Our aim is to offer an overview of the most recent and significant field of application of IGF-1 inhibitors and relevant therapeutic strategies, weighing their possible future impact on clinical practice.
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Affiliation(s)
- Anna Ianza
- Department of Medical, Surgery and Health Sciences, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Marianna Sirico
- Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
- Breast Cancer Unit and Translational Research Unit, ASST Cremona, Cremona, Italy
| | - Ottavia Bernocchi
- Department of Medical, Surgery and Health Sciences, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Daniele Generali
- Department of Medical, Surgery and Health Sciences, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
- Breast Cancer Unit and Translational Research Unit, ASST Cremona, Cremona, Italy
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
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17
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Bleach R, Sherlock M, O'Reilly MW, McIlroy M. Growth Hormone/Insulin Growth Factor Axis in Sex Steroid Associated Disorders and Related Cancers. Front Cell Dev Biol 2021; 9:630503. [PMID: 33816477 PMCID: PMC8012538 DOI: 10.3389/fcell.2021.630503] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/11/2021] [Indexed: 12/13/2022] Open
Abstract
To date, almost all solid malignancies have implicated insulin-like growth factor (IGF) signalling as a driver of tumour growth. However, the remarkable level of crosstalk between sex hormones, the IGF-1 receptor (IGF-1R) and its ligands IGF-1 and 2 in endocrine driven cancers is incompletely understood. Similar to the sex steroids, IGF signalling is essential in normal development as well as growth and tissue homoeostasis, and undergoes a steady decline with advancing age and increasing visceral adiposity. Interestingly, IGF-1 has been found to play a compensatory role for both estrogen receptor (ER) and androgen receptor (AR) by augmenting hormonal responses in the absence of, or where low levels of ligand are present. Furthermore, experimental, and epidemiological evidence supports a role for dysregulated IGF signalling in breast and prostate cancers. Insulin-like growth factor binding protein (IGFBP) molecules can regulate the bioavailability of IGF-1 and are frequently expressed in these hormonally regulated tissues. The link between age-related disease and the role of IGF-1 in the process of ageing and longevity has gained much attention over the last few decades, spurring the development of numerous IGF targeted therapies that have, to date, failed to deliver on their therapeutic potential. This review will provide an overview of the sexually dimorphic nature of IGF signalling in humans and how this is impacted by the reduction in sex steroids in mid-life. It will also explore the latest links with metabolic syndromes, hormonal imbalances associated with ageing and targeting of IGF signalling in endocrine-related tumour growth with an emphasis on post-menopausal breast cancer and the impact of the steroidal milieu.
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Affiliation(s)
- Rachel Bleach
- Endocrine Oncology Research Group, Department of Surgery, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Mark Sherlock
- Academic Department of Endocrinology, Beaumont Hospital and RCSI Medical School, Dublin, Ireland
| | - Michael W O'Reilly
- Academic Department of Endocrinology, Beaumont Hospital and RCSI Medical School, Dublin, Ireland
| | - Marie McIlroy
- Endocrine Oncology Research Group, Department of Surgery, RCSI University of Medicine and Health Sciences, Dublin, Ireland
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18
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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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19
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Huang G, Song C, Wang N, Qin T, Sui S, Obr A, Zeng L, Wood TL, Leroith D, Li M, Wu Y. RNA-binding protein CUGBP1 controls the differential INSR splicing in molecular subtypes of breast cancer cells and affects cell aggressiveness. Carcinogenesis 2020; 41:1294-1305. [PMID: 31958132 PMCID: PMC7513956 DOI: 10.1093/carcin/bgz141] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/18/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022] Open
Abstract
The insulin receptor gene (INSR) undergoes alternative splicing to give rise to two functionally related, but also distinct, isoforms IR-A and IR-B, which dictate proliferative and metabolic regulations, respectively. Previous studies identified the RNA-binding protein CUGBP1 as a key regulator of INSR splicing. In this study, we show that the differential splicing of INSR occurs more frequently in breast cancer than in non-tumor breast tissues. In breast cancer cell lines, the IR-A:IR-B ratio varies in different molecular subtypes, knockdown or overexpression of CUGBP1 gene in breast cancer cells altered IR-A:IR-B ratio through modulation of IR-A expression, thereby reversed or enhanced the insulin-induced oncogenic behavior of breast cancer cells, respectively. Our data revealed the predominant mitogenic role of IR-A isoform in breast cancer and depicted a novel interplay between INSR and CUGBP1, implicating CUGBP1 and IR-A isoform as the potential therapeutic targets and biomarkers for breast cancer.
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Affiliation(s)
- Gena Huang
- Institute for Genome Engineered Animal Models of Human Diseases, Dalian Medical University, Dalian, Liaoning, China
- Department of Breast Oncology, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
- National Center of Genetically Engineered Animal Models for International Research, Dalian Medical University, Dalian, Liaoning, China
- Liaoning Provence Key Lab of Genome Engineered Animal Models, Dalian Medical University, Dalian, Liaoning, China
| | - Chen Song
- Department of Breast Oncology, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Ning Wang
- Institute for Genome Engineered Animal Models of Human Diseases, Dalian Medical University, Dalian, Liaoning, China
- National Center of Genetically Engineered Animal Models for International Research, Dalian Medical University, Dalian, Liaoning, China
- Liaoning Provence Key Lab of Genome Engineered Animal Models, Dalian Medical University, Dalian, Liaoning, China
| | - Tao Qin
- Department of Pathology, Dalian Medical University, Dalian, Liaoning, China
| | - Silei Sui
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, China
| | - Alison Obr
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Cancer Institute of New Jersey, Newark, NJ, USA
| | - Li Zeng
- Institute for Genome Engineered Animal Models of Human Diseases, Dalian Medical University, Dalian, Liaoning, China
- National Center of Genetically Engineered Animal Models for International Research, Dalian Medical University, Dalian, Liaoning, China
| | - Teresa L Wood
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Cancer Institute of New Jersey, Newark, NJ, USA
| | - Derek Leroith
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn Mount Sinai School of Medicine, New York, NY, USA
| | - Man Li
- Department of Breast Oncology, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yingjie Wu
- Institute for Genome Engineered Animal Models of Human Diseases, Dalian Medical University, Dalian, Liaoning, China
- National Center of Genetically Engineered Animal Models for International Research, Dalian Medical University, Dalian, Liaoning, China
- Liaoning Provence Key Lab of Genome Engineered Animal Models, Dalian Medical University, Dalian, Liaoning, China
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn Mount Sinai School of Medicine, New York, NY, USA
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
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20
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Nishio E, Hayashi T, Akaza M, Hisatomi Y, Hikichi M, Fujii T, Utsumi T, Harada N, Shimono Y. Upregulation of CIP2A in estrogen depletion-resistant breast cancer cells treated with low-dose everolimus. FEBS Open Bio 2020; 10:2072-2080. [PMID: 32810922 PMCID: PMC7530388 DOI: 10.1002/2211-5463.12956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/31/2020] [Accepted: 08/16/2020] [Indexed: 12/31/2022] Open
Abstract
Everolimus (EVE), an inhibitor of mammalian target of rapamycin, is an emerging second‐line therapeutic option for hormone therapy‐resistant breast cancers. However, some patients do not respond to EVE, whereas in others it exacerbates the disease. Cellular inhibitor of protein phosphatase 2A (CIP2A) is a human oncoprotein that can promote cancer cell growth and apoptosis resistance. Although CIP2A is upregulated in hormone‐related cancers, such as breast cancer, little is known about potential anti‐tumor effects of downregulating CIP2A. As a model to study the resistance of breast cancer cells to hormone treatment, we previously established clones of long‐term estrogen depletion‐resistant MCF‐7 (LTED) cells. Here, we selected three clones highly responsive to EVE and three clones poorly responsive to EVE. When cells were treated with EVE, CIP2A mRNA expression was decreased in highly responsive EVE clones (DC‐cells) whereas it was increased in poorly responsive EVE clones (IC‐cells). Using Kaplan–Meier survival plots, we report that high expression of CIP2A was associated with significantly reduced overall survival in patients with luminal A breast cancer. In IC‐cells, cell growth was enhanced upon EVE treatment whereas an EVE range of 0.1–100 nm decreased growth in DC‐cells. The mRNA expression of genes involved in epithelial–mesenchymal transition (EMT) such as CDH1, CLDN3, and CK19 was significantly decreased in IC‐cells, but remained unchanged in DC‐cells. These findings highlight a relationship between CIP2A and EMT in the intrinsic resistance of hormone therapy‐resistant breast cancers to EVE.
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Affiliation(s)
- Eiji Nishio
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Takanori Hayashi
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Mao Akaza
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yukiko Hisatomi
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Masahiro Hikichi
- Department of Breast Surgery, Fujita Health University School of Medicine, Toyoake, Japan
| | - Takuma Fujii
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Toshiaki Utsumi
- Department of Breast Surgery, Fujita Health University School of Medicine, Toyoake, Japan
| | - Nobuhiro Harada
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yohei Shimono
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
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21
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Intrinsic and Extrinsic Factors Governing the Transcriptional Regulation of ESR1. Discov Oncol 2020; 11:129-147. [PMID: 32592004 DOI: 10.1007/s12672-020-00388-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/02/2020] [Indexed: 02/06/2023] Open
Abstract
Transcriptional regulation of ESR1, the gene that encodes for estrogen receptor α (ER), is critical for regulating the downstream effects of the estrogen signaling pathway in breast cancer such as cell growth. ESR1 is a large and complex gene that is regulated by multiple regulatory elements, which has complicated our understanding of how ESR1 expression is controlled in the context of breast cancer. Early studies characterized the genomic structure of ESR1 with subsequent studies focused on identifying intrinsic (chromatin environment, transcription factors, signaling pathways) and extrinsic (tumor microenvironment, secreted factors) mechanisms that impact ESR1 gene expression. Currently, the introduction of genomic sequencing platforms and additional genome-wide technologies has provided additional insight on how chromatin structures may coordinate with these intrinsic and extrinsic mechanisms to regulate ESR1 expression. Understanding these interactions will allow us to have a clearer understanding of how ESR1 expression is regulated and eventually provide clues on how to influence its regulation with potential treatments. In this review, we highlight key studies concerning the genomic structure of ESR1, mechanisms that affect the dynamics of ESR1 expression, and considerations towards affecting ESR1 expression and hormone responsiveness in breast cancer.
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22
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Piperigkou Z, Karamanos NK. Estrogen receptor-mediated targeting of the extracellular matrix network in cancer. Semin Cancer Biol 2020; 62:116-124. [DOI: 10.1016/j.semcancer.2019.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 01/04/2023]
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23
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Liu Y, Ma H, Yao J. ERα, A Key Target for Cancer Therapy: A Review. Onco Targets Ther 2020; 13:2183-2191. [PMID: 32210584 PMCID: PMC7073439 DOI: 10.2147/ott.s236532] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/20/2020] [Indexed: 12/18/2022] Open
Abstract
Estrogen receptor α (ERα) is closely associated with both hormone-dependent and hormone-independent tumors, and it is also essential for the development of these cancers. The functions of ERα are bi-faceted; it can contribute to cancer progression as well as cancer inhibition. Therefore, understanding ERα is vital for the treatment of those cancers that are closely associated with its expression. Here, we will elaborate on ERα based on its structure, localization, activation, modification, and mutation. Also, we will look at co-activators of ERα, elucidate the signaling pathway activated by ERα, and identify cancers related to its activation. A comprehensive understanding of ERα could help us to find new ways to treat cancers.
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Affiliation(s)
- Yanfang Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, People's Republic of China
| | - Hong Ma
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, People's Republic of China
| | - Jing Yao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, People's Republic of China
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Distinct Roles of mTOR Targets S6K1 and S6K2 in Breast Cancer. Int J Mol Sci 2020; 21:ijms21041199. [PMID: 32054043 PMCID: PMC7072743 DOI: 10.3390/ijms21041199] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 12/12/2022] Open
Abstract
The mechanistic target of rapamycin (mTOR) is a master regulator of protein translation, metabolism, cell growth and proliferation. It forms two complexes, mTOR complex 1 (mTORC1) and 2 (mTORC2). mTORC1 is frequently deregulated in many cancers, including breast cancer, and is an important target for cancer therapy. The immunosuppressant drug rapamycin and its analogs that inhibit mTOR are currently being evaluated for their potential as anti-cancer agents, albeit with limited efficacy. mTORC1 mediates its function via its downstream targets 40S ribosomal S6 kinases (S6K) and eukaryotic translation initiation factor 4E (eIF4E)-binding protein 1 (4E-BP1). There are two homologs of S6K: S6K1 and S6K2. Most of the earlier studies focused on S6K1 rather than S6K2. Because of their high degree of structural homology, it was generally believed that they behave similarly. Recent studies suggest that while they may share some functions, they may also exhibit distinct or even opposite functions. Both homologs have been implicated in breast cancer, although how they contribute to breast cancer may differ. The purpose of this review article is to compare and contrast the expression, structure, regulation and function of these two S6K homologs in breast cancer.
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Kruger DT, Alexi X, Opdam M, Schuurman K, Voorwerk L, Sanders J, van der Noort V, Boven E, Zwart W, Linn SC. IGF-1R pathway activation as putative biomarker for linsitinib therapy to revert tamoxifen resistance in ER-positive breast cancer. Int J Cancer 2019; 146:2348-2359. [PMID: 31490549 PMCID: PMC7065127 DOI: 10.1002/ijc.32668] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/26/2019] [Accepted: 08/14/2019] [Indexed: 12/18/2022]
Abstract
Preclinical studies indicate that activated IGF-1R can drive endocrine resistance in ER-positive (ER+) breast cancer, but its clinical relevance is unknown. We studied the effect of IGF-1R signaling on tamoxifen benefit in patients and we searched for approaches to overcome IGF-1R-mediated tamoxifen failure in cell lines. Primary tumor blocks from postmenopausal ER+ breast cancer patients randomized between adjuvant tamoxifen versus nil were recollected. Immunohistochemistry for IGF-1R, p-IGF-1R/InsR, p-ERα(Ser118), p-ERα(Ser167) and PI3K/MAPK pathway proteins was performed. Multivariate Cox models were employed to assess tamoxifen efficacy. The association between p-IGF-1R/InsR and PI3K/MAPK pathway activation in MCF-7 and T47D cells was analyzed with Western blots. Cell proliferation experiments were performed under various growth-stimulating and -inhibiting conditions. Patients with ER+, IGF-1R-positive breast cancer without p-IGF-1R/InsR staining (n = 242) had tamoxifen benefit (HR 0.41, p = 0.0038), while the results for p-IGF-1R/InsR-positive patients (n = 125) were not significant (HR 0.95, p = 0.3). High p-ERα(Ser118) or p-ERα(Ser167) expression was associated with less tamoxifen benefit. In MCF-7 cells, IGF-1R stimulation increased phosphorylation of PI3K/MAPK proteins and ERα(Ser167) regardless of IGF-1R overexpression. This could be abrogated by the dual IGF-1R/InsR inhibitor linsitinib, but not by the IGF-IR-selective antibody 1H7. In MCF-7 and T47D cells, stimulation of the IGF-1R/InsR pathway resulted in cell proliferation regardless of tamoxifen. Abrogation of cell growth was regained by addition of linsitinib. In conclusion, p-IGF-1R/InsR positivity in ER+ breast cancer is associated with reduced benefit from adjuvant tamoxifen in postmenopausal patients. In cell lines, stimulation rather than overexpression of IGF-1R is driving tamoxifen resistance to be abrogated by linsitinib.
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Affiliation(s)
- Dinja T Kruger
- Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam/Cancer Center Amsterdam, Amsterdam, The Netherlands.,Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Xanthippi Alexi
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Mark Opdam
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Karianne Schuurman
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Leonie Voorwerk
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.,Division of Molecular Oncology & Immunology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Joyce Sanders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Vincent van der Noort
- Division of Biometrics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Epie Boven
- Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam/Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Wilbert Zwart
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands.,Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Sabine C Linn
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.,Department of Medical Oncology, The National Cancer Institute, Amsterdam, The Netherlands.,Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
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26
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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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27
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Fan P, Jordan VC. New insights into acquired endocrine resistance of breast cancer. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2019; 2:198-209. [PMID: 31815253 PMCID: PMC6897388 DOI: 10.20517/cdr.2019.13] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The translational research strategy of targeting estrogen receptor α (ERα) positive breast cancer and then using long term anti-hormone adjuvant therapy (5-10 years) has reduced recurrences and mortality. However, resistance continues to occur and improvements are required to build on the success of tamoxifen and aromatase inhibitors (AIs) established over the past 40 years. Further translational research has described the evolution of acquired resistance of breast cancer cell lines to long term estrogen deprivation that parallels clinical experience over years. Additionally, recent reports have identified mutations in the ERα obtained from the recurrences of AI treated patients. These mutations allow the ERα to activate without ligands and auto stimulate metastatic tumor growth. Furthermore, the new biology of estrogen-induced apoptosis in acquired resistant models in vitro and in vivo has been interrogated and applied to clinical trials. Inflammation and stress are emerging concepts occurring in the process of acquired resistance and estrogen-induced apoptosis with different mechanisms. In this review, we will present progress in the understanding of acquired resistance, focus on stress and inflammatory responses in the development of acquired resistance, and consider approaches to create new treatments to improve the treatment of breast cancer with endocrine resistance.
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Affiliation(s)
- Ping Fan
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - V Craig Jordan
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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28
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The arginine methyltransferase PRMT1 regulates IGF-1 signaling in breast cancer. Oncogene 2019; 38:4015-4027. [PMID: 30692633 PMCID: PMC6755991 DOI: 10.1038/s41388-019-0694-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 12/10/2018] [Accepted: 12/25/2018] [Indexed: 02/07/2023]
Abstract
Aside from its well-known nuclear routes of signaling, estrogen also mediates its effects through cytoplasmic signaling. Estrogen signaling involves numerous posttranslational modifications of its receptor ERα, the best known being phosphorylation. Our research group previously showed that upon estrogen stimulation, ERα is methylated on residue R260 and forms the mERα/Src/PI3K complex, central to the rapid transduction of nongenomic estrogen signals. Regulation of ERα signaling via its phosphorylation by growth factors is well recognized, and we wondered whether they could also trigger ERα methylation (mERα). Here, we found that IGF-1 treatment of MCF-7 cells induced rapid ERα methylation by the arginine methyltransferase PRMT1 and triggered the binding of mERα to IGF-1R. Mechanistically, we showed that PRMT1 bound constitutively to IGF-1R and that PRMT1 became activated upon IGF-1 stimulation. Moreover, we found that expression or pharmacological inhibition of PRMT1 impaired mERα and IGF-1 signaling. Our findings were substantiated in a cohort of breast tumors in which IGF-1R expression was positively correlated with ERα/Src and ERα/PI3K expression, hallmarks of nongenomic estrogen signaling, reinforcing the link between IGF-1R and mERα. Altogether, these results provide a new insight into ERα and IGF-1R interference, and open novel perspectives for combining endocrine therapies with PRMT1 inhibitors in ERα-positive tumors.
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29
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Tian W, Teng F, Gao J, Gao C, Liu G, Zhang Y, Yu S, Zhang W, Wang Y, Xue F. Estrogen and insulin synergistically promote endometrial cancer progression via crosstalk between their receptor signaling pathways. Cancer Biol Med 2019; 16:55-70. [PMID: 31119046 PMCID: PMC6528450 DOI: 10.20892/j.issn.2095-3941.2018.0157] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objective Despite evidence that estrogens and insulin are involved in the development and progression of many cancers, their synergistic role in endometrial carcinoma (EC) has not been analyzed yet. Methods Here, we investigated how estrogens act synergistically with insulin to promote EC progression. Cell growth in vitro and in vivo, effects of estradiol and insulin on apoptosis and cell cycle distribution, and expression and activation of estrogen receptor (ER), insulin receptor (InsR), and key proteins in the PI3K and MAPK pathways were examined after combined stimulation with estradiol and insulin. Results Compared to EC cells treated with estradiol or insulin alone, those treated with both estradiol and insulin exhibited stronger stimulation. Estradiol significantly induced phosphorylation of InsR-β and IRS-1, whereas insulin significantly induced phosphorylation of ER-α. In addition, treatment with both insulin and estradiol together significantly increased the expression and phosphorylation of Akt, MAPK, and ERK. Notably, InsR-β inhibition had a limited effect on estradiol-dependent proliferation, cell cycle, and apoptosis, whereas ER-α inhibition had a limited insulin-dependent effect, in EC cell lines. Insulin and estradiol individually and synergistically promoted EC xenograft growth in mice. Conclusions Estrogen and insulin play synergistic roles in EC carcinogenesis and progression by activating InsR-β and ER-α, promoting a crosstalk between them, and thereby resulting in the activation of downstream PI3K/Akt and MAPK/ERK signaling pathways.
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Affiliation(s)
| | - Fei Teng
- Department of Gynecology and Obstetrics
| | | | - Chao Gao
- Department of Gynecology and Obstetrics
| | | | | | - Shizhu Yu
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Wei Zhang
- Department of Cancer Biology, Comprehensive Cancer Center of Wake Forest Baptist Medical Center, Winston-Salem 27157, NC USA
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30
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Nagle AM, Levine KM, Tasdemir N, Scott JA, Burlbaugh K, Kehm J, Katz TA, Boone DN, Jacobsen BM, Atkinson JM, Oesterreich S, Lee AV. Loss of E-cadherin Enhances IGF1-IGF1R Pathway Activation and Sensitizes Breast Cancers to Anti-IGF1R/InsR Inhibitors. Clin Cancer Res 2018; 24:5165-5177. [PMID: 29941485 PMCID: PMC6821389 DOI: 10.1158/1078-0432.ccr-18-0279] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/29/2018] [Accepted: 06/20/2018] [Indexed: 12/14/2022]
Abstract
Purpose: Insulin-like growth factor 1 (IGF1) signaling regulates breast cancer initiation and progression and associated cancer phenotypes. We previously identified E-cadherin (CDH1) as a repressor of IGF1 signaling and in this study examined how loss of E-cadherin affects IGF1R signaling and response to anti-IGF1R/insulin receptor (InsR) therapies in breast cancer.Experimental Design: Breast cancer cell lines were used to assess how altered E-cadherin levels regulate IGF1R signaling and response to two anti-IGF1R/InsR therapies. In situ proximity ligation assay (PLA) was used to define interaction between IGF1R and E-cadherin. TCGA RNA-seq and RPPA data were used to compare IGF1R/InsR activation in estrogen receptor-positive (ER+) invasive lobular carcinoma (ILC) and invasive ductal carcinoma (IDC) tumors. ER+ ILC cell lines and xenograft tumor explant cultures were used to evaluate efficacy to IGF1R pathway inhibition in combination with endocrine therapy.Results: Diminished functional E-cadherin increased both activation of IGF1R signaling and efficacy to anti-IGF1R/InsR therapies. PLA demonstrated a direct endogenous interaction between IGF1R and E-cadherin at points of cell-cell contact. Increased expression of IGF1 ligand and levels of IGF1R/InsR phosphorylation were observed in E-cadherin-deficient ER+ ILC compared with IDC tumors. IGF1R pathway inhibitors were effective in inhibiting growth in ER+ ILC cell lines and synergized with endocrine therapy and similarly IGF1R/InsR inhibition reduced proliferation in ILC tumor explant culture.Conclusions: We provide evidence that loss of E-cadherin hyperactivates the IGF1R pathway and increases sensitivity to IGF1R/InsR targeted therapy, thus identifying the IGF1R pathway as a potential novel target in E-cadherin-deficient breast cancers. Clin Cancer Res; 24(20); 5165-77. ©2018 AACR.
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Affiliation(s)
- Alison M Nagle
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Kevin M Levine
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Nilgun Tasdemir
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Julie A Scott
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Kara Burlbaugh
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Justin Kehm
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Tiffany A Katz
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
- The Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - David N Boone
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
- Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Britta M Jacobsen
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Jennifer M Atkinson
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
| | - Steffi Oesterreich
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Adrian V Lee
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania.
- Women's Cancer Research Center, UPMC Hillman Cancer Center, Magee Women's Research Institute, Pittsburgh, Pennsylvania
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania
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31
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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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32
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Li L, Liu S, Liu L, Ma Z, Feng M, Ye C, Zhou W, Wang Y, Liu L, Wang F, Yu L, Zhou F, Xiang Y, Huang S, Fu Q, Zhang Q, Gao D, Yu Z. Impact of phosphorylated insulin-like growth factor-1 receptor on the outcome of breast cancer patients and the prognostic value of its alteration during neoadjuvant chemotherapy. Exp Ther Med 2018; 16:2949-2959. [PMID: 30233667 PMCID: PMC6143873 DOI: 10.3892/etm.2018.6584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 04/20/2018] [Indexed: 12/19/2022] Open
Abstract
The expression of insulin-like growth factor-1 receptor (IGF-1R), which is involved in the genesis and progression of breast cancer, is thought to be associated with the overall survival (OS) of patients. However, the predictive and prognostic significance of the IGF-1R expression in breast cancer remains controversial. The present study aimed to identify the factors associated with the levels of phosphorylated (p)-IGF-1R in breast cancer, their impact on the outcomes of breast cancer patients, and the prognostic value of alterations of p-IGF-1R during neoadjuvant chemotherapy (NAC). The present study included 348 female breast cancer patients whose paraffin-embedded tumor tissue sections had been collected by biopsy and/or resection, among which the pre-NAC and post-NAC sections were available from 40 patients. Human epidermal growth factor receptor 2 (HER2) positivity and molecular subtype were significantly associated with the presence of p-IGF-1R in the tumor tissue (P<0.05). Patients with p-IGF-1R present in the tumor tissue had a shorter OS (P=0.003). The p-IGF-1R levels in the tumor after NAC differed significantly from those prior to NAC (P=0.005); however, this alteration in p-IGF-1R levels was not associated with a shorter OS. In parallel with HER2, p-IGF-1R appears to be a promising indicator for predicting clinical outcomes and may be an attractive target for improving the efficacy of antitumor therapy, particularly for patients with HER2-negative, estrogen receptor-positive and luminal B tumors.
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Affiliation(s)
- Liang Li
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Shuchen Liu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China.,Department of General Surgery, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Liyuan Liu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Zhongbing Ma
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Man Feng
- Department of Pathology, Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan, Shandong 250031, P.R. China
| | - Chunmiao Ye
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China.,Department of General Surgery, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Wenzhong Zhou
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China.,Department of General Surgery, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yongjiu Wang
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Lu Liu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China.,Department of General Surgery, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Fei Wang
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Lixiang Yu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Fei Zhou
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yujuan Xiang
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Shuya Huang
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Qinye Fu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Qiang Zhang
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Dezong Gao
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Zhigang Yu
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
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Abstract
Early preclinical and population data suggested a role for the type I insulin-like growth factor receptor (IGF1R) in the regulation of breast cancer growth and survival. To target this pathway, multiple monoclonal antibodies and tyrosine kinase inhibitors were developed and tested in clinical trials. While some of the early clinical trials suggested a benefit for these drugs, none of the attempts showed improved outcomes when compared to conventional therapy. This failure of the IGF1R inhibitors was pronounced in breast cancer; multiple trials testing IGF1R inhibition in estrogen receptor-positive breast cancer were conducted, none showed benefit. This review will evaluate the rationale for IGF1R inhibition, discuss results of the clinical trials and suggest a path forward.
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Affiliation(s)
- Douglas Yee
- Masonic Cancer CenterUniversity of Minnesota, Minneapolis, Minnesota, USA
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34
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Hessel H, Poignée-Heger M, Lohmann S, Hirscher B, Herold A, Assmann G, Budczies J, Sotlar K, Kirchner T. Subtyping Of Triple Negative Breast Carcinoma On The Basis Of RTK Expression. J Cancer 2018; 9:2589-2602. [PMID: 30087699 PMCID: PMC6072816 DOI: 10.7150/jca.23023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 04/16/2018] [Indexed: 12/13/2022] Open
Abstract
Background: "Triple-negative breast cancers" (TNBC) comprise a heterogeneous group of about 15% of invasive BCs lacking the expression of estrogen and progesterone receptors (ER, PR) and the expression of HER2 (ERBB2) and are therefore no established candidates for targeted treatment options in BC, i.e., endocrine and anti-HER2 therapy. The aim of the present study was to use gene expression profiling and immunohistochemical (IHC) characterization to identify receptor tyrosine kinase (RTK) profiles that would allow patient stratification for the purposes of target-oriented personalized tumor therapy in TNBC. Methods: Twenty-nine cases of TNBC selected according to routine diagnostic IHC/cytogenetic criteria were examined by reverse transcription polymerase chain reaction (RT-PCR). RTK mRNA expression profiles were generated for a total of 31 tumor-relevant biomarkers, mainly belonging to the IGF- and EGF-receptor families but also including biomarkers related to downstream signaling. Protein expression of selected biomarkers was investigated by IHC. Results: Hierarchical cluster analysis revealed a dichotomous differentiation pattern amongst TNBCs. A significant difference in gene expression was observed for 16 of the 31 RTK-associated tumor relevant biomarkers between the two newly identified TNBC subgroups. The findings were verified at the posttranslational level by the IHC data. The RTKs HER4, IGF-1R and IGF-2R and the hormone receptors ER and PR below the IHC detection limit play a central role in the differentiation of the two TNBC subgroups. Observed survival was reported as Kaplan-Meier estimates and point towards an improved survival of patients with RTK-high with superior three-year survival rate of 100% compared to RTK-low gene signatures with superior three-year survival rate of 60% (log-rank test, p-value = 0.022). Conclusion: Gene-expression and IHC analysis of the EGF and IGF receptor families and biomarkers associated with downstream signaling point to the existence of two distinct TNBC subtypes. The RTKs HER4, IGF-1R, IGF-2R and the hormone receptors ER and PR appear to be of particular importance here. Based on survival analysis the differentiation of TNBC with RTK-high and RTK-low gene signatures seems to be of prognostic relevance. Additionally, correlation analysis of the relationship between RTKs and ER suggests co-regulatory mechanisms that may have potential significance in new therapeutic approaches.
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Affiliation(s)
- Harald Hessel
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
| | | | | | | | | | - Gerald Assmann
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
- Pathologiepraxis München, Germany
| | - Jan Budczies
- Institute of Pathology, Charité University Hospital, Berlin, Germany
| | - Karl Sotlar
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
- University Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Austria
| | - Thomas Kirchner
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
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Hayashi T, Hikichi M, Yukitake J, Wakatsuki T, Nishio E, Utsumi T, Harada N. Forskolin increases the effect of everolimus on aromatase inhibitor-resistant breast cancer cells. Oncotarget 2018; 9:23451-23461. [PMID: 29805747 PMCID: PMC5955115 DOI: 10.18632/oncotarget.25217] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 04/06/2018] [Indexed: 01/31/2023] Open
Abstract
Aromatase inhibitor (AI) resistance is a major obstacle in the treatment of estrogen receptor-positive breast cancer. Everolimus (EVE) ameliorates AI-resistant breast cancer and is therefore used in cancer treatment. However, some patients show resistance to EVE. Here, we used 30 clones of long-term estrogen-deprived (LTED) MCF-7 cells as a model of AI-resistant breast cancer. We examined changes in protein phosphatase type 2A (PP2A) and cancerous inhibitor of PP2A (CIP2A), a negative regulator of PP2A, in LTED cells treated with EVE. In LTED cells with high sensitivity to EVE, CIP2A expression decreased at low EVE concentrations; however, in LTED cells poorly sensitive to EVE, CIP2A and PP2A did not change upon exposure to EVE. Therefore, we hypothesized that there is a relation between expression of CIP2A and sensitivity to EVE. Knockdown of CIP2A increased the sensitivity to EVE in three clones poorly sensitive to EVE. Additionally, we found that treatment with FSK, which activates PP2A, increased the sensitivity of the cells to EVE. Our data point to CIP2A and PP2A as novel therapeutic targets for AI-resistant breast cancer.
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Affiliation(s)
- Takanori Hayashi
- Department of Biochemistry, School of Medicine, Fujita Health University, Aichi, Japan
| | - Masahiro Hikichi
- Department of Breast Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | - Jun Yukitake
- Department of Clinical Immunology, School of Health Sciences, Fujita Health University, Aichi, Japan
| | - Toru Wakatsuki
- Department of Health Science, School of Medicine, Fujita Health University, Aichi, Japan
| | - Eiji Nishio
- Department of Obstetrics and Gynecology, School of Medicine, Fujita Health University, Aichi, Japan
| | - Toshiaki Utsumi
- Department of Breast Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | - Nobuhiro Harada
- Department of Biochemistry, School of Medicine, Fujita Health University, Aichi, Japan
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Yang W, Schwartz GN, Marotti JD, Chen V, Traphagen NA, Gui J, Miller TW. Estrogen receptor alpha drives mTORC1 inhibitor-induced feedback activation of PI3K/AKT in ER+ breast cancer. Oncotarget 2018; 9:8810-8822. [PMID: 29507656 PMCID: PMC5823630 DOI: 10.18632/oncotarget.24256] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 01/09/2018] [Indexed: 12/15/2022] Open
Abstract
The mTORC1 inhibitor RAD001 (everolimus) is approved for treatment of recurrent/metastatic estrogen receptor (ER)-positive breast cancer in combination with the aromatase inhibitor (AI) exemestane. The benefits of A) continued anti-estrogen therapy for anti-estrogen-resistant disease in the context of mTORC1 inhibition, and B) adjuvant everolimus in combination with anti-estrogen therapy for early-stage disease are being tested clinically, but molecular rationale remains unclear. We hypothesized that mTORC1 inhibition activates the IGF-1R/InsR/IRS-1/2 axis in an ER-dependent manner to drive PI3K/AKT and promote cancer cell survival, implicating ER in survival signaling induced by mTORC1 inhibition. Anti-estrogen treatment synergized with RAD001 to inhibit ER+ breast cancer cell growth. Inhibition of ER, IGF-1R/InsR, or IRS-1/2 suppressed AKT activation induced by mTORC1 inhibition. RAD001 primed IGF-1R/InsR for activation, which was enhanced by ER signaling. Post-menopausal patients with early-stage ER+ breast cancer were treated presurgically +/- the AI letrozole. Viable tumor fragments from surgical specimens were treated with RAD001 and/or OSI-906 ex vivo; RAD001 increased AKT activation, which was abrogated by presurgical letrozole. Letrozole decreased IGF-1R and IRS-1/2 tumor levels. These data suggest that ER drives PI3K/AKT activation in response to mTORC1 inhibition, providing molecular rationale for therapeutic combinations of anti-estrogens and mTORC1 inhibitors in endocrine-sensitive disease.
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Affiliation(s)
- Wei Yang
- Department of Molecular and Systems Biology, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Gary N Schwartz
- Department of Hematology/Oncology, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Comprehensive Breast Program, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Jonathan D Marotti
- Department of Pathology and Laboratory Medicine, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Comprehensive Breast Program, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Vivian Chen
- Department of Molecular and Systems Biology, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Nicole A Traphagen
- Department of Molecular and Systems Biology, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Jiang Gui
- Department of Biomedical Data Sciences, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Todd W Miller
- Department of Molecular and Systems Biology, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Comprehensive Breast Program, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
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Hayashi T, Hikichi M, Yukitake J, Harada N, Utsumi T. Estradiol suppresses phosphorylation of ERα serine 167 through upregulation of PP2A in breast cancer cells. Oncol Lett 2017; 14:8060-8065. [PMID: 29344249 DOI: 10.3892/ol.2017.7216] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 09/07/2017] [Indexed: 12/23/2022] Open
Abstract
Aromatase inhibitors (AIs) are effective endocrine therapeutics for postmenopausal women with estrogen receptor (ER)α-positive breast cancer. However, the efficacy of the treatment is often limited by the onset of AI resistance, owing to the phosphorylation of ERα serine 167 (Ser167). Previous studies have indicated that hyperactivation of the phosphoinositide-3 kinase/RAC serine/threonine-protein kinase signaling pathway occurs in AI-resistant breast cancer models, which coincides with elevated levels of ERα phosphorylation at Ser167. The tumor suppressor serine/threonine-protein phosphatase 2A (PP2A) regulates the phosphatidylinositol 3-kinase/RAC serine/threonine-protein kinase signaling pathway. A previous study indicated that PP2A inhibition decreased ERα Ser167 phosphorylation and estradiol (E2)-independent cell growth. The present study investigated the potential relevance of PP2A in E2 deprivation-resistant MCF-7 cells. E2 depletion reduced the susceptibility of MCF-7 cells to inhibitors of mechanistic target of rapamycin (mTOR) and significantly increased ERα Ser167 phosphorylation and decreased expression of PP2A. Conversely, long-term E2-deprived (LTED) MCF-7 cells, a model of AI-resistant breast cancer, exhibited decreased ERα Ser167 phosphorylation and further upregulation of PP2A in E2-containing medium. The PP2A activator forskolin (FSK) significantly inhibited LTED cell proliferation by increasing the effect of everolimus (Eve), an mTOR inhibitor. In summary, the present study provides further evidence that PP2A represents a therapeutic target for AI-resistant breast cancer.
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Affiliation(s)
- Takanori Hayashi
- Department of Biochemistry, School of Medicine, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Masahiro Hikichi
- Department of Breast Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Jun Yukitake
- Department of Clinical Immunology, School of Health Sciences, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Nobuhiro Harada
- Department of Biochemistry, School of Medicine, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Toshiaki Utsumi
- Department of Breast Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi 470-1192, Japan
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Ring KL, Yates MS, Schmandt R, Onstad M, Zhang Q, Celestino J, Kwan SY, Lu KH. Endometrial Cancers With Activating KRas Mutations Have Activated Estrogen Signaling and Paradoxical Response to MEK Inhibition. Int J Gynecol Cancer 2017; 27:854-862. [PMID: 28498246 PMCID: PMC5438270 DOI: 10.1097/igc.0000000000000960] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES The aims of this study were to determine if activating KRas mutation alters estrogen signaling in endometrial cancer (EC) and to explore the potential therapeutic impact of these alterations. METHODS The Cancer Genome Atlas was queried for changes in estrogen-regulated genes in EC based on KRas mutation status. In vitro studies were conducted to evaluate estrogen receptor α (ERα) phosphorylation changes and related kinase changes in KRas mutant EC cells. The resulting effect on response to MEK inhibition, using trametinib, was evaluated. Immunohistochemistry was performed on KRas mutant and wild-type EC tumors to test estrogen signaling differences. RESULTS KRas mutant tumors in The Cancer Genome Atlas showed decreased progesterone receptor expression (P = 0.047). Protein analysis in KRas mutant EC cells also showed decreased expression of ERα (P < 0.001) and progesterone receptor (P = 0.001). Although total ERα is decreased in KRas mutant cells, phospho-ERα S118 was increased compared with wild type. Treatment with trametinib in KRas mutant cells increased phospho-ERα S167 and increased expression of estrogen-regulated genes. While MEK inhibition blocked estradiol-stimulated phosphorylation of ERK1/2 and p90RSK in wild-type cells, phospho-ERK1/2 and phospho-p90RSK were substantially increased in KRas mutants. KRas mutant EC tumor specimens showed similar changes, with increased phospho-ERα S118 and phospho-ERα S167 compared with wild-type EC tumors. CONCLUSIONS MEK inhibition in KRas mutant cells results in activation of ER signaling and prevents the abrogation of signaling through ERK1/2 and p90RSK that is achieved in KRas wild-type EC cells. Combination therapy with MEK inhibition plus antiestrogen therapy may be necessary to improve response rates in patients with KRas mutant EC.
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Affiliation(s)
- Kari L. Ring
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Melinda S. Yates
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Rosemarie Schmandt
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Michaela Onstad
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Qian Zhang
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Joseph Celestino
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Suet-Ying Kwan
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Karen H. Lu
- Departments of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
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Vaziri-Gohar A, Zheng Y, Houston KD. IGF-1 Receptor Modulates FoxO1-Mediated Tamoxifen Response in Breast Cancer Cells. Mol Cancer Res 2017; 15:489-497. [PMID: 28096479 DOI: 10.1158/1541-7786.mcr-16-0176] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 12/02/2016] [Accepted: 12/21/2016] [Indexed: 11/16/2022]
Abstract
Tamoxifen is a common adjuvant treatment for estrogen receptor (ER)α-positive patients with breast cancer; however, acquired resistance abrogates the efficacy of this therapeutic approach. We recently demonstrated that G protein-coupled estrogen receptor 1 (GPER1) mediates tamoxifen action in breast cancer cells by inducing insulin-like growth factor-binding protein-1 (IGFBP-1) to inhibit IGF-1-dependent signaling. To determine whether dysregulation of IGFBP-1 induction is associated with tamoxifen resistance, IGFBP-1 transcription was measured in tamoxifen-resistant MCF-7 cells (TamR) after tamoxifen (Tam) treatment. IGFBP-1 transcription was not stimulated in tamoxifen-treated TamR cells whereas decreased expression of FoxO1, a known modulator of IGFBP-1, was observed. Exogenous expression of FoxO1 rescued the ability of tamoxifen to induce IGFBP-1 transcription in TamR cells. As decreased IGF-1R expression is observed in tamoxifen-resistant cells, the requirement for IGF-1R expression on tamoxifen-stimulated IGFBP-1 transcription was investigated. In TamR and SK-BR-3 cells, both characterized by low IGF-1R levels, exogenous IGF-1R expression increased FoxO1 levels and IGFBP-1 expression, whereas IGF-1R knockdown in MCF-7 cells decreased tamoxifen-stimulated IGFBP-1 transcription. Interestingly, both 17β-estradiol (E2)-stimulated ERα phosphorylation and progesterone receptor (PR) expression were altered in TamR. PR is a transcription factor known to modulate FoxO1 transcription. In addition, IGF-1R knockdown decreased FoxO1 protein levels in MCF-7 cells. Furthermore, IGF-1R or FoxO1 knockdown inhibited the ability of tamoxifen to induce IGFBP-1 transcription and tamoxifen sensitivity in MCF-7 cells. These data provide a molecular mechanistic connection between IGF-1R expression and the FoxO1-mediated mechanism of tamoxifen action in breast cancer cells.Implications: Loss of IGF-1R expression is associated with decreased tamoxifen efficacy in patients with breast cancer and the development of tamoxifen resistance. This contribution identifies potential molecular mechanisms of altered tamoxifen sensitivity in breast cancer cells resulting from decreased IGF-1R expression. Mol Cancer Res; 15(4); 489-97. ©2017 AACR.
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Affiliation(s)
- Ali Vaziri-Gohar
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico
| | - Yan Zheng
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico
| | - Kevin D Houston
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico.
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40
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Rugo HS, Vidula N, Ma C. Improving Response to Hormone Therapy in Breast Cancer: New Targets, New Therapeutic Options. Am Soc Clin Oncol Educ Book 2017; 35:e40-54. [PMID: 27249746 DOI: 10.1200/edbk_159198] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The majority of breast cancer expresses the estrogen and or progesterone receptors (ER and PR). In tumors without concomitant HER2 amplification, hormone therapy is a major treatment option for all disease stages. Resistance to hormonal therapy is associated with disease recurrence and progression. Recent studies have identified a number of resistance mechanisms leading to estrogen-independent growth of hormone receptor-positive (HR+) breast cancer as a result of genetic and epigenetic alterations, which could be exploited as novel therapeutic targets. These include acquired mutations in ER-alpha (ESR1) in response to endocrine deprivation; constitutive activation of cyclin-dependent kinases (CDK) 4 and 6; cross talk between ER and growth factor receptor signaling such as HER family members, fibroblast growth factor receptor (FGFR) pathways, intracellular growth, and survival signals PI3K/Akt/mTOR; and epigenetic modifications by histone deacetylase (HDAC) as well as interactions with tumor microenvironment and host immune response. Inhibitors of these pathways are being developed to improve efficacy of hormonal therapy for treatment of both metastatic and early-stage disease. Two agents are currently approved in the United States for the treatment of metastatic HR+ breast cancer, including the mTOR inhibitor everolimus and the CDK4/6 inhibitor palbociclib. Management of toxicity is a critical aspect of treatment; the primary toxicity of everolimus is stomatitis (treated with topical steroids) and of palbociclib is neutropenia (treated with dose reduction/delay). Many agents are in clinical trials, primarily in combination with hormone therapy; novel combinations are under active investigation.
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Affiliation(s)
- Hope S Rugo
- From the UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA; University of San Francisco School of Medicine, San Francisco, CA; Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Neelima Vidula
- From the UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA; University of San Francisco School of Medicine, San Francisco, CA; Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
| | - Cynthia Ma
- From the UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA; University of San Francisco School of Medicine, San Francisco, CA; Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO
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41
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Ochnik AM, Peterson MS, Avdulov SV, Oh AS, Bitterman PB, Yee D. Amplified in Breast Cancer Regulates Transcription and Translation in Breast Cancer Cells. Neoplasia 2016; 18:100-10. [PMID: 26936396 PMCID: PMC5005264 DOI: 10.1016/j.neo.2016.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/26/2015] [Accepted: 01/04/2016] [Indexed: 01/27/2023] Open
Abstract
Background Control of mRNA translation is fundamentally altered in cancer. Insulin-like growth factor-I (IGF-I) signaling regulates key translation mediators to modulate protein synthesis (e.g. eIF4E, 4E-BP1, mTOR, and S6K1). Importantly the Amplified in Breast Cancer (AIB1) oncogene regulates transcription and is also a downstream mediator of IGF-I signaling. Materials and Methods To determine if AIB1 also affects mRNA translation, we conducted gain and loss of AIB1 function experiments in estrogen receptor alpha (ERα)+ (MCF-7L) and ERα- (MDA-MB-231, MDA-MB-435 and LCC6) breast cancer cells. Results AIB1 positively regulated IGF-I-induced mRNA translation in both ERα+ and ERα- cells. Formation of the eIF4E-4E-BP1 translational complex was altered in the AIB1 ERα+ and ERα- knockdown cells, leading to a reduction in the eIF4E/4E-BP1 and eIF4G/4E-BP1 ratios. In basal and IGF-I stimulated MCF-7 and LCC6 cells, knockdown of AIB1 decreased the integrity of the cap-binding complex, reduced global IGF-I stimulated polyribosomal mRNA recruitment with a concomitant decrease in ten of the thirteen genes tested in polysome-bound mRNAs mapping to proliferation, cell cycle, survival, transcription, translation and ribosome biogenesis ontologies. Specifically, knockdown of AIB1 decreased ribosome-bound mRNA and steady-state protein levels of the transcription factors ERα and E2F1 in addition to reduced ribosome-bound mRNA of the ribosome biogenesis factor BYSL in a cell-line specific manner to regulate mRNA translation. Conclusion The oncogenic transcription factor AIB1 has a novel role in the regulation of polyribosome recruitment and formation of the translational complex. Combinatorial therapies targeting IGF signaling and mRNA translation in AIB1 expressing breast cancers may have clinical benefit and warrants further investigation.
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Affiliation(s)
- Aleksandra M Ochnik
- Masonic Cancer Center, Departments of Medicine and Pharmacology, University of Minnesota, Minneapolis, MN, USA.
| | - Mark S Peterson
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Minneapolis, MN, USA.
| | - Svetlana V Avdulov
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Minneapolis, MN, USA.
| | - Annabell S Oh
- Masonic Cancer Center, Departments of Medicine and Pharmacology, University of Minnesota, Minneapolis, MN, USA.
| | - Peter B Bitterman
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Minneapolis, MN, USA.
| | - Douglas Yee
- Masonic Cancer Center, Departments of Medicine and Pharmacology, University of Minnesota, Minneapolis, MN, USA.
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Ochnik AM, Baxter RC. Combination therapy approaches to target insulin-like growth factor receptor signaling in breast cancer. Endocr Relat Cancer 2016; 23:R513-R536. [PMID: 27733416 DOI: 10.1530/erc-16-0218] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 09/09/2016] [Indexed: 12/19/2022]
Abstract
Insulin-like growth factor receptor (IGF1R) signaling as a therapeutic target has been widely studied and clinically tested. Despite the vast amount of literature supporting the biological role of IGF1R in breast cancer, effective clinical translation in targeting its activity as a cancer therapy has not been successful. The intrinsic complexity of cancer cell signaling mediated by many tyrosine kinase growth factor receptors that work together to modulate each other and intracellular downstream mediators in the cell highlights that studying IGF1R expression and activity as a prognostic factor and therapeutic target in isolation is certainly associated with problems. This review discusses the current literature and clinical trials associated with IGF-1 signaling and attempts to look at new ways of designing novel IGF1R-directed breast cancer therapy approaches to target its activity
and/or intracellular downstream signaling pathways in IGF1R-expressing breast cancers.
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Affiliation(s)
- Aleksandra M Ochnik
- Kolling Institute of Medical ResearchUniversity of Sydney, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Robert C Baxter
- Kolling Institute of Medical ResearchUniversity of Sydney, Royal North Shore Hospital, St Leonards, New South Wales, Australia
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43
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Becker MA, Hou X, Tienchaianada P, Haines BB, Harrington SC, Weroha SJ, Sathyanarayanan S, Haluska P. Ridaforolimus (MK-8669) synergizes with Dalotuzumab (MK-0646) in hormone-sensitive breast cancer. BMC Cancer 2016; 16:814. [PMID: 27765027 PMCID: PMC5073873 DOI: 10.1186/s12885-016-2847-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 10/07/2016] [Indexed: 11/16/2022] Open
Abstract
Background Mammalian target of rapamycin (mTOR) represents a key downstream intermediate for a myriad of oncogenic receptor tyrosine kinases. In the case of the insulin-like growth factor (IGF) pathway, the mTOR complex (mTORC1) mediates IGF-1 receptor (IGF-1R)-induced estrogen receptor alpha (ERα) phosphorylation/activation and leads to increased proliferation and growth in breast cancer cells. As a result, the prevalence of mTOR inhibitors combined with hormonal therapy has increased in recent years. Conversely, activated mTORC1 provides negative feedback regulation of IGF signaling via insulin receptor substrate (IRS)-1/2 serine phosphorylation and subsequent proteasomal degradation. Thus, the IGF pathway may provide escape (e.g. de novo or acquired resistance) from mTORC1 inhibitors. It is therefore plausible that combined inhibition of mTORC1 and IGF-1R for select subsets of ER-positive breast cancer patients presents as a viable therapeutic option. Methods Using hormone-sensitive breast cancer cells stably transfected with the aromatase gene (MCF-7/AC-1), works presented herein describe the in vitro and in vivo antitumor efficacy of the following compounds: dalotuzumab (DALO; “MK-0646”; anti-IGF-1R antibody), ridaforolimus (RIDA; “MK-8669”; mTORC1 small molecule inhibitor) and letrozole (“LET”, aromatase inhibitor). Results With the exception of MK-0646, all single agent and combination treatment arms effectively inhibited xenograft tumor growth, albeit to varying degrees. Correlative tissue analyses revealed MK-0646 alone and in combination with LET induced insulin receptor alpha A (InsR-A) isoform upregulation (both mRNA and protein expression), thereby further supporting a triple therapy approach. Conclusion These data provide preclinical rationalization towards the combined triple therapy of LET plus MK-0646 plus MK-8669 as an efficacious anti-tumor strategy for ER-positive breast tumors. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2847-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marc A Becker
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA. .,Division of Medical Oncology, Mayo Clinic College of Medicine, 200 First St. SW, Rochester, MN, 55905, USA.
| | - Xiaonan Hou
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Piyawan Tienchaianada
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA.,Oncology unit, Department of Medicine, Rajavithi Hospital, Bangkok, 10400, Thailand
| | - Brian B Haines
- Molecular Oncology, Merck Research Laboratories, Boston, MA, 02115, USA
| | | | - S John Weroha
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Paul Haluska
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
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Grissom EM, Daniel JM. Evidence for Ligand-Independent Activation of Hippocampal Estrogen Receptor-α by IGF-1 in Hippocampus of Ovariectomized Rats. Endocrinology 2016; 157:3149-56. [PMID: 27254005 PMCID: PMC4967122 DOI: 10.1210/en.2016-1197] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/26/2016] [Indexed: 11/19/2022]
Abstract
In the absence of ovarian estrogens, increased levels of estrogen receptor (ER)α in the hippocampus are associated with improvements in cognition. In vitro evidence indicates that under conditions of low estrogen, growth factors, including Insulin-Like Growth Factor 1 (IGF-1), can activate ERα and regulate ERα-mediated transcription through mechanisms that likely involve modification of phosphorylation sites on the receptor. The goal of the current work was to investigate a role for IGF-1 in ligand-independent activation of ERα in the hippocampus of female rats. Ovariectomized rats received a single intracerebroventricular infusion of IGF-1 and hippocampi were collected 1 or 24 hours later. After 1 h, IGF-1 increased hippocampal levels of phosphorylated ERα at serine 118 (S118) as revealed by Western blotting. Coimmunoprecipitation revealed that at 1 hour after infusion, IGF-1 increased association between ERα and steroid receptor coactivator 1, a histone acetyltransferase that increases transcriptional activity of phosphorylated ERα. IGF-1 infusion increased levels of the ERα-regulated proteins ERα, choline acetyltransferase, and brain-derived neurotrophic factor in the hippocampus 24 hours after infusion. Results indicate that IGF-1 activates ERα in ligand-independent manner in the hippocampus via phosphorylation at S118 resulting in increased association of ERα with steroid receptor coactivator 1 and elevation of ER-regulated proteins. To our knowledge, these data are the first in vivo evidence of ligand-independent actions of ERα and provide a mechanism by which ERα can impact memory in the absence of ovarian estrogens.
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Affiliation(s)
- Elin M Grissom
- Department of Psychology and Program in Neuroscience, Tulane University, New Orleans, Louisiana 70118
| | - Jill M Daniel
- Department of Psychology and Program in Neuroscience, Tulane University, New Orleans, Louisiana 70118
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45
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The insulin-like growth factor-I receptor (IGF-IR) in breast cancer: biology and treatment strategies. Tumour Biol 2016; 37:11711-11721. [PMID: 27444280 DOI: 10.1007/s13277-016-5176-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/12/2016] [Indexed: 12/15/2022] Open
Abstract
Breast cancer is the most common cancer and the second leading cause of cancer-related deaths among women worldwide. Although patients are often diagnosed in the early and curable stages, the treatment of metastatic breast cancer remains a major clinical challenge. The combination of chemotherapy with new targeting agents, such as bevacizumab, is helpful in improving patient survival; however, novel treatment strategies are required to improve clinical outcomes. The insulin-like growth factor-I receptor (IGF-IR) is a tyrosine kinase cell surface receptor which is involved in the regulation of cell growth and metabolism. Previous studies have shown that activation of the IGF-IR signaling pathway promotes proliferation, survival, and metastasis of breast cancer cells. Additionally, overexpression of IGF-IR is associated with breast cancer cell resistance to anticancer therapies. Recently, IGF-IR has been introduced as a marker of stemness in breast cancer cells and there is also accumulating evidence that IGF-IR contributes to the establishment and maintenance of breast cancer epithelial-mesenchymal transition (EMT). Therefore, pharmacological or molecular targeting of IGF-IR could be a promising strategy, in the treatment of patients with breast cancer, particularly in order to circumvent the therapeutic resistance and targeting breast cancer stem/progenitors. Currently, many strategies have been developed for targeting IGF-IR, some have entered clinical trials and some are in preclinical stages for breast cancer therapy. In this review, we will first discuss on the biology of IGF-IR in an attempt to find the role of this receptor in breast cancer and then discuss about therapeutic strategies to target this receptor.
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Kolb R, Sutterwala FS, Zhang W. Obesity and cancer: inflammation bridges the two. Curr Opin Pharmacol 2016; 29:77-89. [PMID: 27429211 DOI: 10.1016/j.coph.2016.07.005] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/05/2016] [Accepted: 07/06/2016] [Indexed: 12/14/2022]
Abstract
Obesity is a growing public health problem and affects 35% US adults. Obesity increases the risk of many cancer types and is associated with poor outcomes. Clinical management of cancer patients has been essentially the same between normal weight and obese individuals. Understanding causal mechanisms by which obesity drives cancer initiation and progression is essential for the development of novel precision therapy for obese cancer patients. One caveat is that various mechanisms have been proposed for different cancer types for their progression under obesity. Since obesity is known to have global impact on inflammation, here we will summarize recent literature and discuss the potential of inflammation being the common causal mechanism to promote cancer promotion across cancer types.
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Affiliation(s)
- Ryan Kolb
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Fayyaz S Sutterwala
- Division of Infectious Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Weizhou Zhang
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, IA, USA; Medical Scientist Training Program, University of Iowa Carver College of Medicine, Iowa City, IA, USA; Free Radical and Radiation Biology Program, University of Iowa Carver College of Medicine, Iowa City, IA, USA; Cancer Genes and Pathway Holden Comprehensive Cancer Center, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
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Higuchi T, Endo M, Hanamura T, Gohno T, Niwa T, Yamaguchi Y, Horiguchi J, Hayashi SI. Contribution of Estrone Sulfate to Cell Proliferation in Aromatase Inhibitor (AI) -Resistant, Hormone Receptor-Positive Breast Cancer. PLoS One 2016; 11:e0155844. [PMID: 27228187 PMCID: PMC4882040 DOI: 10.1371/journal.pone.0155844] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022] Open
Abstract
Aromatase inhibitors (AIs) effectively treat hormone receptor-positive postmenopausal breast cancer, but some patients do not respond to treatment or experience recurrence. Mechanisms of AI resistance include ligand-independent activation of the estrogen receptor (ER) and signaling via other growth factor receptors; however, these do not account for all forms of resistance. Here we present an alternative mechanism of AI resistance. We ectopically expressed aromatase in MCF-7 cells expressing green fluorescent protein as an index of ER activity. Aromatase-overexpressing MCF-7 cells were cultured in estrogen-depleted medium supplemented with testosterone and the AI, letrozole, to establish letrozole-resistant (LR) cell lines. Compared with parental cells, LR cells had higher mRNA levels of steroid sulfatase (STS), which converts estrone sulfate (E1S) to estrone, and the organic anion transporter peptides (OATPs), which mediate the uptake of E1S into cells. LR cells proliferated more in E1S-supplemented medium than did parental cells, and LR proliferation was effectively inhibited by an STS inhibitor in combination with letrozole and by ER-targeting drugs. Analysis of ER-positive primary breast cancer tissues showed a significant correlation between the increases in the mRNA levels of STS and the OATPs in the LR cell lines, which supports the validity of this AI-resistant model. This is the first study to demonstrate the contribution of STS and OATPs in E1S metabolism to the proliferation of AI-resistant breast cancer cells. We suggest that E1S metabolism represents a new target in AI-resistant breast cancer treatment.
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Affiliation(s)
- Toru Higuchi
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Department of Visceral and Thoracic Organ Surgery, Graduated School of Medicine, Gunma University, Maebashi, Gunma, Japan
| | - Megumi Endo
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Toru Hanamura
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Division of Breast and Endocrine Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Tatsuyuki Gohno
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Toshifumi Niwa
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Yuri Yamaguchi
- Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Saitama, Japan
| | - Jun Horiguchi
- Department of Visceral and Thoracic Organ Surgery, Graduated School of Medicine, Gunma University, Maebashi, Gunma, Japan
| | - Shin-ichi Hayashi
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Center for Regulatory Epi genome and Diseases, Graduate School of Medicine, Tohoku University, Sendai, Niyagi, Japan
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Vaziri-Gohar A, Houston KD. GPER1-mediated IGFBP-1 induction modulates IGF-1-dependent signaling in tamoxifen-treated breast cancer cells. Mol Cell Endocrinol 2016; 422:160-171. [PMID: 26690777 PMCID: PMC4742395 DOI: 10.1016/j.mce.2015.11.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/05/2015] [Accepted: 11/26/2015] [Indexed: 01/10/2023]
Abstract
Tamoxifen, a selective estrogen receptor modulator, is a commonly prescribed adjuvant therapy for estrogen receptor-α (ERα)-positive breast cancer patients. To determine if extracellular factors contribute to the modulation of IGF-1 signaling after tamoxifen treatment, MCF-7 cells were treated with IGF-1 in conditioned medium (CM) obtained from 4-OHT-treated MCF-7 cells and the accumulation of phospho-Akt (S473) was measured. CM inhibited IGF-1-dependent cell signaling and suggesting the involvement of extracellular factors (ie. IGFBPs). A significant increase in IGFBP-1 mRNA and extracellular IGFBP-1 protein was observed in 4-OHT-treated MCF-7 cells. Knockdown experiments demonstrated that both GPER1 and CREB mediate IGFBP-1 induction. Furthermore, experiments showed that 4-OHT-dependent IGFBP-1 transcription is downstream of GPER1-activation in breast cancer cells. Additionally, neutralization and knockdown experiments demonstrated a role for IGFBP-1 in the observed inhibition of IGF-1 signaling. These results suggested that 4-OHT inhibits IGF-1 signaling via GPER1 and CREB mediated extracellular IGFBP-1 accumulation in breast cancer cells.
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Affiliation(s)
- Ali Vaziri-Gohar
- Molecular Biology Program, New Mexico State University, Las Cruces, NM 88003, USA
| | - Kevin D Houston
- Molecular Biology Program, New Mexico State University, Las Cruces, NM 88003, USA; Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
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Disruption of insulin receptor function inhibits proliferation in endocrine-resistant breast cancer cells. Oncogene 2016; 35:4235-43. [PMID: 26876199 PMCID: PMC4982805 DOI: 10.1038/onc.2015.488] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/29/2015] [Accepted: 10/11/2015] [Indexed: 11/29/2022]
Abstract
The insulin-like growth factor (IGF) system is a well-studied growth regulatory pathway implicated in breast cancer biology. Clinical trials testing monoclonal antibodies directed against the type I IGF receptor (IGF1R) in combination with estrogen receptor-α (ER) targeting have been completed, but failed to show benefits in patients with endocrine resistant tumors compared to ER targeting alone. We have previously shown that the closely related insulin receptor (InsR) is expressed in tamoxifen resistant breast cancer cells. Here we examined if inhibition of InsR affected tamoxifen-resistant (TamR) breast cancer cells. InsR function was inhibited by three different mechanisms: InsR shRNA, a small InsR blocking peptide, S961 and an InsR monoclonal antibody (mAb). Suppression of InsR function by these methods in TamR cells successfully blocked insulin-mediated signaling, monolayer proliferation, cell cycle progression and anchorage-independent growth. This strategy was not effective in parental cells likely due to the presence of IGFR/InsR hybrid receptors. Down-regulation of IGF1R in conjunction with InsR inhibition was more effective in blocking IGF- and insulin-mediated signaling and growth in parental cells compared to single receptor targeting alone. Our findings show TamR cells were stimulated by InsR and were not sensitive to IGF1R inhibition, whereas in tamoxifen-sensitive parental cancer cells, the presence of both receptors, especially hybrid receptors, allowed cross-reactivity of ligand-mediated activation and growth. To suppress the IGF system, targeting of both IGF1R and InsR is optimal in endocrine sensitive and resistant breast cancer.
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Luqmani YA, Alam-Eldin N. Overcoming Resistance to Endocrine Therapy in Breast Cancer: New Approaches to a Nagging Problem. Med Princ Pract 2016; 25 Suppl 2:28-40. [PMID: 26849149 PMCID: PMC5588530 DOI: 10.1159/000444451] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 02/04/2016] [Indexed: 01/02/2023] Open
Abstract
In the majority of women, breast cancer progresses through increased transcriptional activity due to over-expressed oestrogen receptors (ER). Therapeutic strategies include: (i) reduction of circulating ovarian oestrogens or of peripherally produced oestrogen (in postmenopausal women) with aromatase inhibitors and (ii) application of selective ER modulators for receptor blockade. The success of these interventions is limited by the variable but persistent onset of acquired resistance and by an intrinsic refractiveness which manifests despite adequate levels of ER in about 50% of patients with advanced metastatic disease. Loss of functional ER leads to endocrine insensitivity, loss of cellular adhesion and polarity, and increased migratory potential due to trans-differentiation of the epithelial cancer cells into a mesenchymal-like phenotype (epithelial-mesenchymal transition; EMT). Multiple mechanisms contributing to therapeutic failure have been proposed: (i) loss or modification of ER expression including epigenetic mechanisms, (ii) agonistic actions of selective ER modulators that may be enhanced through an increased expression of co-activators, (iii) attenuation of the tamoxifen metabolism through expression of genetic variants of P450 cytochromes which leads to more or less active metabolites and (iv) increased growth factor signalling particularly through epidermal growth factor receptor activation of pathways involving keratinocyte growth factor, platelet-derived growth factor, and nuclear factor x03BA;B. In addition, the small non-coding microRNAs, recently recognized as critical gene regulators, exhibit differential expression in tamoxifen-sensitive versus resistant cell lines. Several studies suggest the potential of using these either as targets or as therapeutic agents to modulate EMT regulators as a means of reversing the aggressive metastatic phenotype by reversal of the EMT, with the added benefit of re-sensitization to anti-oestrogens.
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Affiliation(s)
- Yunus A. Luqmani
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, Safat, Kuwait
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