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Progesterone receptor (PR) polyproline domain (PPD) mediates inhibition of epidermal growth factor receptor (EGFR) signaling in non-small cell lung cancer cells. Cancer Lett 2016; 374:279-91. [PMID: 26892043 DOI: 10.1016/j.canlet.2016.02.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/04/2016] [Accepted: 02/09/2016] [Indexed: 12/31/2022]
Abstract
Recent evidence has suggested a possible role for progesterone receptor (PR) in the progression of non-small cell lung cancer (NSCLC). However, little is known concerning roles of PR in NSCLC. PR contains a polyproline domain (PPD), which directly binds to the SH3 domain of signaling molecules. Because PPD-SH3 interactions are essential for EGFR signaling, we hypothesized that the presence of PR-PPD interfered with EGFR-mediated signaling and cell proliferation. We examined the role of PR-PPD in cell proliferation and signaling by stably expressing PR-B, or PR-B with disrupting mutations in the PPD (PR-BΔSH3), from a tetracycline-regulated promoter in A549 NSCLC cells. PR-B dose-dependently inhibited cell growth in the absence of ligand, and progestin (R5020) treatment further suppressed the growth. Treatment with RU486 abolished PR-B- and R5020-mediated inhibition of cell proliferation. Expression of PR-BΔSH3 and treatment with R5020 or RU486 had no effect on cell proliferation. Furthermore, PR-B expression but not PR-BΔSH3 expression reduced EGF-induced A549 proliferation and activation of ERK1/2, in the absence of ligand. Taken together, our data demonstrated the significance of PR extranuclear signaling through PPD interactions in EGFR-mediated proliferation and signaling in NSCLC.
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Sathish V, Prakash Y. Sex Differences in Pulmonary Anatomy and Physiology. SEX DIFFERENCES IN PHYSIOLOGY 2016:89-103. [DOI: 10.1016/b978-0-12-802388-4.00006-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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He Q, Zhang M, Zhang J, Chen Y, He J, Shen J, Liu Y, Zhong S, Jiang L, Yang C, Zeng Y, Guo M, Chen X, He J, Liang W. Correlation between epidermal growth factor receptor mutations and nuclear expression of female hormone receptors in non-small cell lung cancer: a meta-analysis. J Thorac Dis 2015; 7:1588-94. [PMID: 26543606 DOI: 10.3978/j.issn.2072-1439.2015.09.04] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Compared with male, female non-small cell lung cancer (NSCLC) patients have better response when treated with epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKIs), suggesting a potential association between female hormones and EGFR mutation. However, the results provided by previous studies were inconclusive and controversial. We sought to examine the link between the expression of nuclear female hormone receptors and EGFR mutations in NSCLC. METHODS Electronic databases were used to search the relevant articles. The involved hormone receptors included estrogen receptor (ER) and progesterone receptor (PR). The primary endpoint was the occurrence of ER/PR expression and EGFR mutation in NSCLC patients. RESULTS Five studies fulfilled the criteria and were included in our analysis. Patients with high ER-β expression had higher positive EGFR mutation than low ER-β patients (44.2% vs. 23.7%), and there was a significant difference between the two groups [odds radio (OR) 3.44, 95% confidence interval (CI): 2.40-4.93, Z=6.72, P<0.001]. However, there is no significant correlation between EGFR mutations and ER-α (when included ER-α3, OR 1.20, 95% CI: 0.62-2.33, Z=0.55, P=0.58; and when included ER-α4, OR 1.18, 95% CI: 0.62-2.25, Z=0.51, P=0.61) or PR (OR 1.29, 95% CI: 0.40-4.10, Z=0.43, P=0.67). No significant publication bias was observed. CONCLUSIONS High nuclear expression of ER-β, but not ER-α or PR is correlated with EGFR mutations in NSCLC. The underlying mechanism and potential translational relevance warrant further investigation.
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Affiliation(s)
- Qihua He
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Mingzhe Zhang
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Jianrong Zhang
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Ying Chen
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Jiaxi He
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Jianfei Shen
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Yang Liu
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Shengyi Zhong
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Long Jiang
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Chenglin Yang
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Yuan Zeng
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Minzhang Guo
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Xuewei Chen
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Jianxing He
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
| | - Wenhua Liang
- 1 Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China ; 2 Guangzhou Institute of Respiratory Disease & China State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease, Guangzhou 510120, China ; 3 Department of Cardiology, Xiamen Cardiovascular Hospital, Xiamen 361004, China
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Tan HS, Tan MH, Chow KY, Chay WY, Lim WY. Reproductive factors and lung cancer risk among women in the Singapore Breast Cancer Screening Project. Lung Cancer 2015; 90:499-508. [PMID: 26476714 DOI: 10.1016/j.lungcan.2015.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 09/26/2015] [Accepted: 10/04/2015] [Indexed: 11/17/2022]
Abstract
OBJECTIVES A growing body of literature suggests that female hormones play a role in lung cancer risk. Our study aims to examine the relationship between reproductive factors and lung cancer incidence in a large prospectively enrolled cohort in Singapore. MATERIALS AND METHODS Multivariate Cox proportional hazard regression models were used to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs) of lung cancer for each exposure, adjusting for smoking, age at entry, ethnicity and body mass index. RESULTS Among 28,222 women aged 50-64 years enrolled in the Singapore Breast Cancer Screening Project from October 1994 to February 1997, we identified 311 incident lung cancer cases (253 in non-smokers) over an average of 15.8 years of follow-up to 31 December 2011. Higher parity was associated with decreased lung cancer risk. Compared with nulliparous women, those with 1-2, 3-4, and ≥5 deliveries had a hazard ratio (HR) of 0.56, 0.55 and 0.45, respectively (P(trend)<0.01). This association was observed in both smokers and non-smokers, and in both adenocarcinomas and non-adenocarcinomas. Reproductive period, breastfeeding, oral contraceptive and hormone replacement therapy use did not seem to influence the risk of getting lung cancer. CONCLUSION Our findings add to the existing evidence that parous women have a lower lung cancer risk than nulliparous women.
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Affiliation(s)
- Hui Shan Tan
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore; Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - Min-Han Tan
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore; Division of Medical Oncology, National Cancer Centre Singapore, Singapore; Institute of Bioengineering and Nanotechnology, Singapore
| | | | - Wen Yee Chay
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - Wei-Yen Lim
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore.
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Skjefstad K, Richardsen E, Donnem T, Andersen S, Kiselev Y, Grindstad T, Hald SM, Al-Shibli K, Bremnes RM, Busund LT, Al-Saad S. The prognostic role of progesterone receptor expression in non-small cell lung cancer patients: Gender-related impacts and correlation with disease-specific survival. Steroids 2015; 98:29-36. [PMID: 25668612 DOI: 10.1016/j.steroids.2015.01.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 01/05/2023]
Abstract
PURPOSE Progesterone has been shown to impact the development of hormone-sensitive cancers, such as breast and ovarian cancers. Emerging evidence has revealed a possible role of progesterone in the tumorigenesis of other cancers, including lung cancer. Herein, we aimed to elucidate the prevalence and prognostic significance of progesterone receptor (PR) expression in non-small cell lung cancer (NSCLC) tissue. EXPERIMENTAL Tumor tissue samples were collected from our patient cohort consisting of 335 NSCLC patients with stage I-IIIA disease. Tissue microarrays (TMAs) were constructed, and immunohistochemical (IHC) analyses were performed to evaluate the PR expression in the tumor epithelial and stromal compartments. RESULTS In a univariate analysis, positive PR expression in the stromal tumor compartment (P=0.005) was significantly and independently associated with a favorable outcome for both genders. Furthermore, positive PR expression in tumor epithelial cells (P=0.003) correlated with a poor prognosis for female patients. In a multivariate analysis, positive PR expression in the tumor stroma (P=0.007) was an independent prognostic factor for improved disease-specific survival (DSS). Positive PR expression in tumor epithelial cells emerged as an independent prognostic factor in female patients (P=0.001) for poor DSS. CONCLUSIONS We show that PR expression in tumor-surrounding stromal cells is associated with improved DSS for both male and female patients. Additionally, we reveal that positive PR expression in tumor epithelial cells is an independent, unfavorable prognosticator for DSS in female patients, making PR expression a potential marker for prognostic stratification in NSCLC.
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Affiliation(s)
- Kaja Skjefstad
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway.
| | - Elin Richardsen
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway; Department of Clinical Pathology, University Hospital of North Norway, 9037 Tromso, Norway
| | - Tom Donnem
- Department of Clinical Medicine, University of Tromso, 9037 Tromso, Norway; Department of Oncology, University Hospital of North Norway, 9037 Tromso, Norway
| | - Sigve Andersen
- Department of Clinical Medicine, University of Tromso, 9037 Tromso, Norway; Department of Oncology, University Hospital of North Norway, 9037 Tromso, Norway
| | - Yury Kiselev
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway; Department of Pharmacy, University of Tromso, 9037 Tromso, Norway
| | - Thea Grindstad
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway
| | - Sigurd M Hald
- Department of Clinical Medicine, University of Tromso, 9037 Tromso, Norway
| | - Khalid Al-Shibli
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway; Department of Pathology, Nordland Central Hospital, 8005 Bodo, Norway
| | - Roy M Bremnes
- Department of Clinical Medicine, University of Tromso, 9037 Tromso, Norway; Department of Oncology, University Hospital of North Norway, 9037 Tromso, Norway
| | - Lill-Tove Busund
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway; Department of Clinical Pathology, University Hospital of North Norway, 9037 Tromso, Norway
| | - Samer Al-Saad
- Department of Medical Biology, University of Tromso, 9037 Tromso, Norway; Department of Clinical Pathology, University Hospital of North Norway, 9037 Tromso, Norway
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Baik CS, Brasky TM, Pettinger M, Luo J, Gong Z, Wactawski-Wende J, Prentice RL. Nonsteroidal Anti-Inflammatory Drug and Aspirin Use in Relation to Lung Cancer Risk among Postmenopausal Women. Cancer Epidemiol Biomarkers Prev 2015; 24:790-7. [PMID: 25670808 PMCID: PMC4578149 DOI: 10.1158/1055-9965.epi-14-1322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 02/05/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Results from prospective studies suggest that nonsteroidal anti-inflammatory drugs (NSAID) may decrease lung cancer risk; however, any protective effect appears to be most evident in men. METHODS We evaluated the associations between NSAID use and lung cancer incidence in postmenopausal women in the Women's Health Initiative (WHI) adjusting for female-specific potential confounders such as hormone therapy in addition to smoking histories and other potential confounders. We identified 143,841 women from ages 50 to 79 and 1,902 centrally confirmed lung cancer cases were included in the analysis. We used Cox regression models to estimate HRs and their 95% confidence intervals (CI). RESULTS Compared with nonuse, regular NSAID use was not associated with overall lung cancer incidence (NSAID use >10 years HR 0.87; 95% CI, 0.71-1.08, P(trend) = 0.13). No statistically significant associations were found when examined by histologic subtypes and although there was a trend of decreased risk with longer duration of NSAID use in the adenocarcinoma subtype, this was not statistically significant (NSAID use >10 years HR 0.80; 95% CI, 0.58-1.10; P(trend) = 0.07). CONCLUSION Our study did not show that NSAID use is associated with lung cancer risk in women even after adjusting for female-specific confounders. There was a trend of decreased risk in the adenocarcinoma subtype; however, this was not statistically significant. IMPACT Future studies will need to take in account the various molecular subtypes of non-small cell lung cancer to further elucidate the role of NSAIDs in lung cancer, especially for the adenocarcinoma subtype.
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Affiliation(s)
- Christina S Baik
- Department of Medicine, University of Washington, Seattle, Washington.
| | | | - Mary Pettinger
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Juhua Luo
- Department of Epidemiology and Biostatictics, Indiana University, Bloomington, Indiana
| | - Zhihong Gong
- Roswell Park Cancer Institute, Buffalo, New York
| | | | - Ross L Prentice
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
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Sex steroid signaling: implications for lung diseases. Pharmacol Ther 2015; 150:94-108. [PMID: 25595323 DOI: 10.1016/j.pharmthera.2015.01.007] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 01/09/2015] [Indexed: 12/12/2022]
Abstract
There is increasing recognition that sex hormones (estrogen, progesterone, and testosterone) have biological and pathophysiological actions in peripheral, non-reproductive organs, including the lung. Clinically, sex differences in the incidence, morbidity and mortality of lung diseases such as asthma, chronic obstructive pulmonary disease (COPD), pulmonary fibrosis, lung cancer and pulmonary hypertension have been noted, although intrinsic sex differences vs. the roles of sex steroids are still not well-understood. Accordingly, it becomes important to ask the following questions: 1) Which sex steroids are involved? 2) How do they affect different components of the lung under normal circumstances? 3) How does sex steroid signaling change in or contribute to lung disease, and in this regard, are sex steroids detrimental or beneficial? As our understanding of sex steroid signaling in the lung improves, it is important to consider whether such information can be used to develop new therapeutic strategies to target lung diseases, perhaps in both sexes or in a sex-specific manner. In this review, we focus on the basics of sex steroid signaling, and the current state of knowledge regarding how they influence structure and function of specific lung components across the life span and in the context of some important lung diseases. We then summarize the potential for sex steroids as useful biomarkers and therapeutic targets in these lung diseases as a basis for future translational research in the area of gender and individualized medicine.
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Mishra S, Kaddi CD, Wang MD. Pan-cancer analysis for studying cancer stage using protein expression data. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2015:8189-92. [PMID: 26738195 PMCID: PMC4983429 DOI: 10.1109/embc.2015.7320295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Pan-cancer analyses attempt to discover similar features among multiple cancers in order to identify fundamental patterns common to cancer development and progression. Pan-cancer analysis at the level of protein expression is particularly important because protein expression is more immediately related to patient phenotype than genomic or transcriptomic data. This study aims to analyze differentially expressed (DE) proteins between early and advanced cases of multiple cancer types through the usage of reverse-phase protein array data. The relevance of these proteins is further investigated by developing predictive models using K-nearest neighbor and linear discriminant analysis classifiers. The results of this study suggest that a pan-cancer analysis may be highly complementary to standard analysis of an individual cancer for identifying biologically relevant DE proteins, and can assist in developing effective predictive models for cancer progression.
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Abstract
INTRODUCTION Although lung cancer is the leading cause of cancer death in women, few studies have investigated the hormonal influence on survival after a lung cancer diagnosis and results have been inconsistent. We evaluated the role of reproductive and hormonal factors in predicting overall survival in women with non-small-cell lung cancer (NSCLC). METHODS Population-based lung cancer cases diagnosed between November 1, 2001 and October 31, 2005 were identified through the Metropolitan Detroit Surveillance, Epidemiology, and End Results Registry. Interview and follow-up data were collected for 485 women. Cox proportional hazard regression models were used to determine hazard ratios (HRs) for death after an NSCLC diagnosis associated with reproductive and hormonal variables. RESULTS Use of hormone therapy (HT) was associated with improved survival (HR, 0.69; 95% confidence interval, 0.54-0.89), adjusting for stage, surgery, radiation, education level, pack-years of smoking, age at diagnosis, race, and a multiplicative interaction between stage and radiation. No other reproductive or hormonal factor was associated with survival after an NSCLC diagnosis. Increased duration of HT use before the lung cancer diagnosis (132 months or longer) was associated with improved survival (HR, 0.54; 95% confidence interval, 0.37-0.78), and this finding remained significant in women taking either estrogen alone or progesterone plus estrogen, never smokers, and smokers. CONCLUSION These findings suggest that HT use, in particular use of estrogen plus progesterone, and long-term HT use are associated with improved survival of NSCLC.
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Taniuchi S, Fujishima F, Miki Y, Abe K, Nakamura Y, Sato S, Kasajima A, Fue M, Ishida K, Watanabe M, Sakakibara T, Maeda S, Suzuki T, Sasano H. Tissue concentrations of estrogens and aromatase immunolocalization in interstitial pneumonia of human lung. Mol Cell Endocrinol 2014; 392:136-43. [PMID: 24861259 DOI: 10.1016/j.mce.2014.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 04/18/2014] [Accepted: 05/16/2014] [Indexed: 01/07/2023]
Abstract
Interstitial pneumonia (IP) is characterized by various degrees of pulmonary fibrosis and inflammation. Estrogens have been demonstrated to play important roles in physiological and pathological conditions of human lung, but significance of estrogens has remained unknown in human IP. Therefore, we measured estrogen concentrations and immunolocalized aromatase and estrogen receptor β (ERβ) in IP tissues. Estradiol concentration was significantly (2.8-fold) higher in IP than normal lung tissues, and aromatase activity evaluated by estradiol/testosterone ratio was also significantly (7.2-fold) elevated in IP tissues. Aromatase immunoreactivity in alveolar epithelial cells was significantly frequent in IP than normal lung or inflammatory lung disease other than IP, and it was positively associated with ERβ immunoreactivity in these cells of IP. These results suggest that estradiol concentration is locally increased in human IP tissue by aromatase, and increased estrogens may play an important role in the development of IP through ERβ in the alveolar epithelial cells.
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Affiliation(s)
- Shinji Taniuchi
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Fumiyoshi Fujishima
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Yasuhiro Miki
- Departments of Anatomic Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan; Department of Disaster Obstetrics and Gynecology, International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - Keiko Abe
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Yasuhiro Nakamura
- Departments of Anatomic Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Satoko Sato
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Atsuko Kasajima
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Misaki Fue
- Department of Disaster Obstetrics and Gynecology, International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - Kazuyuki Ishida
- Division of Diagnostic Molecular Pathology, Department of Pathology, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Mika Watanabe
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Tomohiro Sakakibara
- Departments of Respiratory Medicine, Tohoku University, Graduate School of Medicine, Sendai, Japan
| | - Sumiko Maeda
- Departments of Thoracic Surgery, Tohoku University Hospital, Sendai, Japan
| | - Takashi Suzuki
- Departments of Pathology and Histotechnology, Tohoku University, Graduate School of Medicine, Sendai, Japan.
| | - Hironobu Sasano
- Departments of Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan; Departments of Anatomic Pathology, Tohoku University, Graduate School of Medicine, Sendai, Japan
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Molecular profiles of non-small cell lung cancers in cigarette smoking and never-smoking patients. Adv Med Sci 2014; 58:196-206. [PMID: 24451080 DOI: 10.2478/ams-2013-0025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Molecular features of non-small cell lung cancer (NSCLC) in never-smokers are not well recognized. We assessed the expression of genes potentially related to lung cancer etiology in smoking vs. never-smoking NSCLC patients. METHODS We assayed frozen tumor samples from surgically resected 31 never-smoking and 54 clinically pair-matched smoking NSCLC patients, and from corresponding normal lung tissue from 27 and 43 patients, respectively. Expression of 21 genes, including cell membrane kinases, sex hormone receptors, transcription factors, growth factors and others was assessed by reverse transcription - quantitative PCR. RESULTS Expression of 5 genes was significantly higher in tumors of non-smokers vs. smokers: CSF1R (p<0.0001), RRAD (p<0.0001), PR (p=0.0004), TGFBR2 (p=0.0027) and EPHB6 (p=0.0033). Expression of AKR1B10 (p<0.0001), CDKN2A (p<0.0001), CHRNA6 (p<0.0001), SOX9 (p<0.0001), survivin (p<0.0001) and ER2 (p=0.002) was significantly higher in tumors compared to normal lung tissue. Expression of AR (p<0.0001), EPHB6 (p<0.0001), PR (p<0.0001), TGFBR2 (p<0.0001), TGFBR3 (p<0.0001), ER1 (p=0.0006) and DLG1 (p=0.0016) was significantly lower in tumors than in normal lung tissue. Expression of IGF2 was higher in tumors than in healthy lung tissue in never-smokers (p=0.003), and expression of AHR (p<0.0001), CSF1R (p<0.0001) and RRAD (p<0.0001) was lower in tumors than in healthy lung tissue in smokers. CONCLUSION Expression of several genes in NSCLC is strongly related to smoking history. Lower expression of PR and higher expression of ER2 in tumors suggests a possibility of hormonal therapeutic intervention in selected NSCLC patients. Distinct molecular features of NSCLC in never-smokers, e.g. CHRNA6 upregulation, may prompt new treatment strategies.
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Kohno M, Okamoto T, Suda K, Shimokawa M, Kitahara H, Shimamatsu S, Konishi H, Yoshida T, Takenoyama M, Yano T, Maehara Y. Prognostic and therapeutic implications of aromatase expression in lung adenocarcinomas with EGFR mutations. Clin Cancer Res 2014; 20:3613-22. [PMID: 24803578 DOI: 10.1158/1078-0432.ccr-13-2683] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Lung adenocarcinomas among never-smokers are more common in females than in males. This implies that gender-dependent hormones promote smoking unrelated lung adenocarcinoma. We therefore investigated mRNA expression of aromatase, an intrinsic estrogen synthetase, in lung adenocarcinoma and assessed its correlation to clinicopathologic factors, including EGFR mutations and postsurgical prognosis. EXPERIMENTAL DESIGN Aromatase mRNA expression in primary tumor samples from 110 patients with lung adenocarcinoma was evaluated with qRT-PCR. Inhibitory effects of the aromatase inhibitor exemestane were assessed in lung adenocarcinoma cell lines (11-18 and HCC4006), which have EGFR mutations, separately and combined with EGFR tyrosine kinase inhibitor erlotinib. RESULTS Aromatase gene expression was not correlated with patients' clinicopathologic factors, including EGFR mutation status. High aromatase expression was associated with poor prognosis for both recurrence-free survival (P = 0.004) and overall survival (P = 0.003). In addition, the prognostic significance of aromatase expression was limited to females, never-smokers, and patients with EGFR mutations, but not in their counterparts. HCC4006, which has a low aromatase mRNA expression level, was not sensitive to exemestane, either alone or combined with erlotinib. In contrast, growth of 11-18 cells, which have high aromatase expression, was significantly inhibited by exemestane, both alone and combined with erlotinib. CONCLUSIONS Aromatase is a candidate prognostic factor in patients with lung adenocarcinoma, especially in those with EGFR mutations, and may also be a beneficial therapeutic target in those patients.
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Affiliation(s)
- Mikihiro Kohno
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | - Tatsuro Okamoto
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University;
| | - Kenichi Suda
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | | | - Hirokazu Kitahara
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | - Shinichiro Shimamatsu
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | - Hideyuki Konishi
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University; Gotemba Research Laboratories, Chugai Pharmaceutical Co. Ltd., Gotemba; and
| | - Tsukihisa Yoshida
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | | | - Tokujiro Yano
- Clinical Research Institute, National Hospital Organization Beppu Medical Center, Beppu, Japan
| | - Yoshihiko Maehara
- Authors' Affiliations: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
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64
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Bogush TA, Shaturova AS, Dudko EA, Bogush EA, Polotsky BE, Tyulandin SA, Davydov MI. Comparative assessment of the estrogen receptor β expression in the tissues of non-small cell lung carcinoma and lung metastases of tumors of other primary localizations. DOKL BIOCHEM BIOPHYS 2014; 454:29-33. [PMID: 24633609 DOI: 10.1134/s1607672914010232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Indexed: 11/23/2022]
Affiliation(s)
- T A Bogush
- Blokhin Russian Cancer Research Center, Russian Academy of Medical Sciences, Moscow, 115478, Russia
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Burns TF, Stabile LP. Targeting the estrogen pathway for the treatment and prevention of lung cancer. Lung Cancer Manag 2014; 3:43-52. [PMID: 25395992 DOI: 10.2217/lmt.13.67] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The estrogen signaling pathway is involved in the biology of non-small-cell lung cancer and represents a novel therapeutic target for lung cancer. This is supported by epidemiological evidence, preclinical studies and recent data from clinical trials. Antiestrogens and inhibitors of estrogen synthesis have been shown to inhibit lung tumor growth as well as prevent lung tumorigenesis in preclinical models both in vitro and in vivo. Two clinical trials testing the effectiveness of hormonal strategies in advanced non-small-cell lung cancer have recently been completed with promising results. Future work in this field should focus on identification of patients that would benefit from hormone modulators so that they can be used earlier in the course of disease or for chemoprevention.
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Affiliation(s)
- Timothy F Burns
- Department of Medicine, Division of Hematology-Oncology, University of Pittsburgh Cancer Institute, Hillman Cancer Center Research Pavilion, 2.18e, 5117 Centre Avenue, Pittsburgh, PA 15213-1863, USA
| | - Laura P Stabile
- Department of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, UPMC Cancer Pavilion, 441, 5117 Centre Avenue, Pittsburgh, PA 15213-1863, USA
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Abstract
Experimental and population-based evidence has been steadily accumulating that steroid hormones are fundamentally involved in the biology of the lung. Both estrogen and progesterone receptors are present in normal and malignant lung tissue, and the reproductive hormones that bind these receptors have a role in lung development, lung inflammation, and lung cancer. The estrogen receptor-β (ER-β) was discovered in the 1990s as a novel form of ER that is transcribed from a gene distinct from ER-α, the receptor previously isolated from breast tissue. Interestingly, ER-β is the predominate ER expressed in normal and malignant lung tissue, whereas inflammatory cells that infiltrate the lung are known to express both ER-α and ER-β. Although there is evidence from animal models for the preferential effects of ER-β in the lungs of females, human lung tumors from males often contain comparable numbers of ER-β-positive cells and male-derived lung cancer cell lines respond to estrogens. Lung tumors from both males and females also express CYP19 (aromatase), the rate-limiting enzyme in estrogen synthesis that converts testosterone to estrone and β-estradiol. Thus, testosterone acts as a precursor for local estrogen production within lung tumors, independent of reproductive organs. This review discusses the recent literature findings about the biology of the ERs, aromatase, and the progesterone receptor in lung cancer and highlights the ongoing clinical trials and future therapeutic implications of these findings.
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Affiliation(s)
- Jill M Siegfried
- University of Minnesota, 6-120 Jackson Hall, 321 Church Street SE, Minneapolis, MN 55455-0217.
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Abstract
It is becoming increasingly clear that steroid hormones are involved in the biology of many organs outside the reproductive system. Evidence has been accumulating since the mid 1990s that the lung contains receptors for both estrogen and progesterone and that these hormones have some role in lung development, pulmonary inflammation, and lung cancer. The estrogen receptor β (ERβ) is the major ER expressed in lung tissues, while inflammatory cells capable of infiltrating the lung are reported to express both ERα and ERβ. Although there is evidence in animals of preferential effects of ERβ in the lungs of females, human lung tumors from males also contain ERβ-positive cells and express aromatase, the enzyme that converts testosterone to estrogens. This review will discuss current literature findings on the role of the ERs and the progesterone receptor (PR), as well CYP19 (aromatase), the rate-limiting enzyme in the synthesis of estrogen, in lung cancer.
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Affiliation(s)
- Jill M Siegfried
- Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA; Current address: Department of Pharmacology, University of Minnesota, Minneapolis, MN.
| | - Laura P Stabile
- Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA
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Yao Y, Gu X, Zhu J, Yuan D, Song Y. Hormone replacement therapy in females can decrease the risk of lung cancer: a meta-analysis. PLoS One 2013; 8:e71236. [PMID: 23967172 PMCID: PMC3743826 DOI: 10.1371/journal.pone.0071236] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 06/28/2013] [Indexed: 11/19/2022] Open
Abstract
The purpose of the present meta-analysis was to determine the relationship between hormone replacement therapy (HRT) and lung cancer risk in females. Publications were reviewed and obtained through a PubMed, EMBASE database and Cochrane Library literature search up to May, 2012. The detailed numbers of patients in different groups, odd ratios (ORs) and corresponding 95% confidence intervals (CIs) were collected and estimated using a random-effects model. Twenty five studies entered into the meta-analysis. The total number of participates and lung cancer patients was 656,403 and 11,442, respectively. The OR of all 25 studies was 0.91 (95%CI = 0.83 to 0.99) and P value was 0.033. In stratified analyses, the positive association between HRT use and decreased lung cancer risk was also found in the patients with BMI<25 kg/m² (OR = 0.65, P = 0.000), and never smokers patients (OR = 0.86, P = 0.042). However, HRT use in patients with artificial menopause could increase the lung cancer risk, OR = 1.51(P = 0.001). The result of Egger's test did not show any evidence of publican bias (P = 0.069). In conclusion, our meta-analysis on HRT and lung cancer risk suggests that HRT use is correlated with decreased lung cancer risk in female, especially in female with BMI<25 kg/m² and never smokers.
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Affiliation(s)
- Yanwen Yao
- Jinling Hospital, Department of Respiratory Medicine, Nanjing University, School of Medicine, Nanjing, China
| | - Xiaoling Gu
- Jinling Hospital, Department of Respiratory Medicine, Nanjing University, School of Medicine, Nanjing, China
| | - Juehua Zhu
- Jinling Hospital, Department of Neurology Medicine, Nanjing University, School of Medicine, Nanjing, China
| | - Dongmei Yuan
- Jinling Hospital, Department of Respiratory Medicine, Nanjing University, School of Medicine, Nanjing, China
| | - Yong Song
- Jinling Hospital, Department of Respiratory Medicine, Nanjing University, School of Medicine, Nanjing, China
- * E-mail:
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Verma MK, Miki Y, Abe K, Suzuki T, Niikawa H, Suzuki S, Kondo T, Sasano H. Intratumoral localization and activity of 17β-hydroxysteroid dehydrogenase type 1 in non-small cell lung cancer: a potent prognostic factor. J Transl Med 2013; 11:167. [PMID: 23837683 PMCID: PMC3724709 DOI: 10.1186/1479-5876-11-167] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 06/27/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Estrogens were recently demonstrated to be synthesized in non-small cell lung carcinomas (NSCLCs) via aromatase activity and aromatase inhibitor (AI) did suppressed estrogen receptor (ER) positive NSCLC growth. However, other enzymes involved in intratumoral production and metabolism of estrogens, i.e. 17β-hydroxysteroid dehydrogenases (i.e. 17βHSD1 and 17βHSD2) and others have not been studied. Therefore, in this study, we examined the clinical/ biological significance of 17β-hydroxysteroid dehydrogenases in NSCLCs. METHODOLOGY Archival materials obtained from 103 NSCLC patients were immunohistochemically evaluated using anti-17βHSD1 and anti-17βHSD2 antibodies. The findings of immunohistochemistry were then correlated with intratumoral estrone (E1) and estradiol (E2) concentration, clinicopathological factors and overall survival of the patients. We further employed NSCLC cell lines, A549 and LK87 to study the functional significance of 17βHSD1, in vitro. RESULTS A higher 17βHSD1 immunoreactivity tended to be positively associated with aromatase (p=0.057) and tumor stage (p=0.055) whereas a higher 17βHSD2 immunoreactivity was positively associated with a squamous cell and adenosquamous cell carcinomas subtypes (p=0.031), tumor stage (p=0.004), T factor of TNM classification (p=0.010), maximum tumor diameter (p=0.002) and tended to be associated with N factor of TMN classification (p=0.065). A higher 17βHSD1 immunoreactivity was also significantly associated with lower intratumoral E1 concentration (p=0.040) and a higher intratumoral E2/E1 concentration ratio (p=0.028). On the other hand a higher 17βHSD2 immunoreactivity was significantly associated with higher intratumoral E1 concentration (p=0.035). Results of multivariate regression analysis demonstrated an increased 17βHSD1 immunoreactivity in tumor cells as an independent negative prognostic factor (HR= 2.83, p=0.007). E1 treatment in 17βHSD1 positive NSCLC cells, A549 and LK87, resulted in E2 production (p<0.0001) and enhanced cell proliferation, which was abrogated effectively by 17βHSD1 siRNA knockdown (p<0.0001). In addition, aromatase inhibitor treatment resulted in 17βHSD1 up regulation in both A549 and LK87 cells. CONCLUSION Results of our present study suggest that 17βHSD1 may be considered an important prognostic factor in NSCLC patients and targeting 17βHSD1 activity may further improve the clinical response in estrogen responsive NSCLC patients.
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Affiliation(s)
- Mohit K Verma
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
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70
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Klingen TA, Chen Y, Suhrke P, Stefansson IM, Gundersen MD, Akslen LA. Expression of thyroid transcription factor-1 is associated with a basal-like phenotype in breast carcinomas. Diagn Pathol 2013; 8:80. [PMID: 23675755 PMCID: PMC3658996 DOI: 10.1186/1746-1596-8-80] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/28/2013] [Indexed: 11/23/2022] Open
Abstract
Background The differential diagnosis between primary and secondary breast cancers might be difficult, especially in poorly differentiated tumors. Thyroid Transcription Factor-1 (TTF-1) has been regarded as a reliable marker for lung or thyroid origin, with only occasional positive staining in other tumors. However, positive cases have recently been reported among primary breast carcinomas. Methods and results Here, we analyzed expression of TTF-1 protein (clone SPT24) by immunohistochemical staining of sections from paraffin embedded tumor samples in 247 primary breast cancers from the population-based Norwegian Breast Cancer Screening Program. Positive staining (weak or strong) was observed in 7 cases (2,8%). As novel observations, positivity was demonstrated more frequently in estrogen receptor negative cases (14,0% vs. 1,4%; p = 0,004), highly proliferative tumors (8,8% vs. 1,1%; p = 0,008), tumors with a basal-like phenotype by showing expression of CK5/6 and/or P-cadherin (11,1% vs. 1,4%; p = 0,01), and tumors with blood vessel invasion (9,7% vs. 1,9%; p = 0,04). Also, TTF-1 was associated with histological grade 3 tumors compared with grade 1 or 2 tumors (7,7% vs. 1,5%; p = 0,04) as well as lymph node positive cases (5,2% vs. 1,8%; p = 0,03). Conclusions Our population-based findings indicate that TTF-1 may be positive in approximately 3% of primary breast cancers, and positivity indicates an association with adverse prognostic factors. Virtual slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8313753509421182
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Affiliation(s)
- Tor A Klingen
- Department of Pathology, Vestfold Hospital Trust, Tønsberg, Norway.
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71
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Brueckl WM, Al-Batran SE, Ficker JH, Claas S, Atmaca A, Hartmann A, Rieker RJ, Wirtz RM. Prognostic and predictive value of estrogen receptor 1 expression in completely resected non-small cell lung cancer. Int J Cancer 2013; 133:1825-31. [PMID: 23580323 DOI: 10.1002/ijc.28209] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 03/25/2013] [Indexed: 12/17/2022]
Abstract
Adjuvant chemotherapy (ACT) leads to a modest improvement in survival among patients with completely resected non-small cell lung cancer (NSCLC) but molecular predictors are still rare. Publicly available gene microarray, clinical and follow-up data from two different studies on early-stage NSCLC were used to determine the expression of estrogen receptor 1 (ESR1). Expression values were calculated against clinical and survival data in a training set (n = 138) and a test set (subpopulation from the adjuvant JBR.10 study) allowing the determination of the prognostic effect of ESR1 in the observational arm as well as the predictive effect of ESR1 regarding ACT. Data were well balanced in terms of ESR1 expression. ESR1 high expression was of significant positive prognostic value in the training set and this could be confirmed in the test set cohort (hazard ratio for overall survival 0.248, 95% confidence interval: 0.088-0.701; p = 0.008). Additionally, ESR1 low tumors showed a benefit from ACT in terms of 5-year survival (33.3% observation arm and 77.8% ACT arm; p = 0.003), whereas patients with ESR1 high tumors did not have any benefit from ACT (test of interaction p = 0.024). ESR1 is an independent positive prognostic factor for survival in early-stage NSCLC patients. Patients with ESR1 high tumors did not benefit from ACT.
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72
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Steroid sulphatase and oestrogen sulphotransferase in human non-small-cell lung carcinoma. Br J Cancer 2013; 108:1415-24. [PMID: 23531699 PMCID: PMC3629433 DOI: 10.1038/bjc.2013.84] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background: Steroid sulphatase (STS) is one of the steroid-metabolising enzymes involved in desulphating inactive steroid sulphates and oestrogen sulphotransferase (EST) sulphates active oestrogen. The roles of both STS and EST have not been examined in oestrogen-dependent non-small-cell lung cancer (NSCLC). Methods: We evaluated the immunoreactivity of STS and EST in NSCLC cases using immunohistochemistry. The function of STS and EST was further demonstrated using NSCLC cell lines. Results: The immunoreactivity of STS and EST was detected in 49.5% and 27.8% of NSCLC cases, respectively. The immunoreactivity of STS was significantly higher in female adenocarcinoma cases. The STS-positive NSCLCs were also significantly correlated in an inversed manner with tumour size and cell proliferation and tended to be associated with better clinical outcome. However, the immunoreactivity of EST was significantly correlated with intracellular oestradiol concentration. Results of in vitro analysis demonstrated that oestrone sulphate (E1-S) induced and pregnenolone sulphate (Preg-S) inhibited the proliferation in STS-expressing cell lines. The inhibition by Preg-S was reversed by a specific progesterone receptor blocker. Simultaneous addition of E1-S and Preg-S significantly suppressed the proliferation. Conclusion: In NSCLC patients, STS is considered a good prognostic factor. Results of our present study also indicated the benefits of potential progesterone therapy for NSCLC patients.
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73
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Xie M, You S, Chen Q, Chen X, Hu C. Progesterone inhibits the migration and invasion of A549 lung cancer cells through membrane progesterone receptor α-mediated mechanisms. Oncol Rep 2013; 29:1873-80. [PMID: 23467643 DOI: 10.3892/or.2013.2336] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 02/18/2013] [Indexed: 11/06/2022] Open
Abstract
Lung cancer is the leading cause of cancer morbidity and mortality in the world. The incidence of lung cancer, particularly lung adenocarcinoma, is increasing in women compared to men. The role of sex hormones in the development of lung cancer has attracted substantial interest, but remains largely unknown. In this study, we demonstrated that membrane progesterone receptor α (mPRα) was expressed in a lung adenocarcinoma cell line, A549, and was located on the cell membrane. In additional experiments, we found that mPRα functioned as an essential mediator for progesterone (P4)-induced inhibitory effects on cell migration and invasion of A549 cells. Furthermore, PP1 (an Src pathway inhibitor), when co-incubated with P4, synchronously enhanced the inhibitory effects of P4 on cell migration and invasion. To explore the mechanisms of inhibition, we found that P4 and PP1 induced a cascade of molecular signaling events, such as dephosphorylation of focal adhesion kinase (FAK) and downregulation of matrix metalloproteinase 9 (MMP-9). Our study provides a mechanistic view on the effects of P4 through mPRα→Src/FAK relevant pathways in human lung adenocarcinoma cells and may aid in the development of novel therapeutic tools for the treatment of lung cancer.
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Affiliation(s)
- Mingxuan Xie
- Department of Gerontology and Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
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74
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Le cancer bronchique de la femme enceinte : prise en charge diagnostique et thérapeutique en 2012. Rev Mal Respir 2013; 30:125-36. [DOI: 10.1016/j.rmr.2012.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 10/18/2012] [Indexed: 12/31/2022]
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Kazmi N, Márquez-Garbán DC, Aivazyan L, Hamilton N, Garon EB, Goodglick L, Pietras RJ. The role of estrogen, progesterone and aromatase in human non-small-cell lung cancer. Lung Cancer Manag 2012; 1:259-272. [PMID: 23650476 DOI: 10.2217/lmt.12.44] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths in both men and women worldwide. Despite advances in treatment, patients have few effective therapeutic options and survival rates remain low. Emerging evidence suggests that the hormones estrogen and progesterone play a key role in the progression of non-small-cell lung cancer (NSCLC). The aromatase enzyme, which is responsible for a key step in estrogen biosynthesis, elicits higher levels of estrogen in lung tumors as well as in metastases compared with nonmalignant tissues. Thus, aromatase may prove to be a key predictive biomarker for treatment of NSCLC. Epidemiologic and preclinical data show estrogens play a critical role in lung tumor development and progression. Two estrogen receptors, α and β, are expressed in normal and in cancerous lung epithelium, and estrogen promotes gene transcription that stimulates cell proliferation and inhibits cell death. Furthermore, expression of both forms of estrogen receptor, progesterone receptor and aromatase in NSCLC specimens has been correlated with worse clinical outcomes. Combination therapies that include estrogen receptor downregulators and aromatase inhibitors are currently being assessed in Phase I-II clinical trials among patients with advanced NSCLC. Results will help guide future lung cancer management decisions, with a goal of achieving more effective and less toxic treatments for patients.
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Affiliation(s)
- Nadiyah Kazmi
- UCLA Geffen School of Medicine, Department of Medicine, Division of Hematology/Oncology, Factor Building 11-934, 700 Tiverton Avenue, Los Angeles, CA 90095-16781, USA
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McHugh MK, Lopez MS, Ho CH, Spitz MR, Etzel CJ, El-Zein RA. Use of the cytokinesis-blocked micronucleus assay to detect gender differences and genetic instability in a lung cancer case-control study. Cancer Epidemiol Biomarkers Prev 2012. [PMID: 23195992 DOI: 10.1158/1055-9965.epi-12-0435] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Although tobacco exposure is the predominant risk factor for lung cancer, other environmental agents are established lung carcinogens. Measuring the genotoxic effect of environmental exposures remains equivocal, as increases in morbidity and mortality may be attributed to coexposures such as smoking. METHODS We evaluated genetic instability and risk of lung cancer associated with exposure to environmental agents (e.g., exhaust) and smoking among 500 lung cancer cases and 500 controls using the cytokinesis-blocked micronucleus (CBMN) assay. Linear regression was applied to estimate the adjusted means of the CBMN endpoints (micronuclei and nucleoplasmic bridges). Logistic regression analyses were used to estimate lung cancer risk and to control for potential confounding by age, gender, and smoking. RESULTS Cases showed significantly higher levels of micronuclei and nucleoplasmic bridges as compared with controls (mean ± SEM = 3.54 ± 0.04 vs. 1.81 ± 0.04 and mean ± SEM = 4.26 ± 0.03 vs. 0.99 ± 0.03, respectively; P < 0.001) with no differences among participants with or without reported environmental exposure. No differences were observed when stratified by smoking or environmental exposure among cases or controls. A difference in lung cancer risk was observed between nonexposed male and female heavy smokers, although it was not statistically significant (I(2) = 64.9%; P value for Q statistic = 0.09). CONCLUSIONS Our study confirms that the CBMN assay is an accurate predictor of lung cancer and supports the premise that heavy smoking may have an effect on DNA repair capacity and in turn modulate the risk of lung cancer. IMPACT Identifying factors that increase lung cancer risk may lead to more effective prevention measures.
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Affiliation(s)
- Michelle K McHugh
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Fang F, Zheng Q, Zhang J, Dong B, Zhu S, Huang X, Wang Y, Zhao B, Li S, Xiong H, Chen J, Wu N, Song SW, Chang C, Yang Y. Testicular orphan nuclear receptor 4-associated protein 16 promotes non-small cell lung carcinoma by activating estrogen receptor β and blocking testicular orphan nuclear receptor 2. Oncol Rep 2012; 29:297-305. [PMID: 23129017 PMCID: PMC3583481 DOI: 10.3892/or.2012.2107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 10/02/2012] [Indexed: 11/05/2022] Open
Abstract
The possible involvement of estrogen receptors (ERs) and testicular orphan nuclear receptors (TRs) in human non-small cell lung carcinoma (NSCLC) has been suggested, but their precise roles and their relationship remain largely unknown. This study aimed to investigate whether TR4-associated protein 16 (TRA16) regulates the ERβ and TR2 pathways and could be a potential target in NSCLC. We used tissue microarrays including NSCLC tissues (n=154) and negative controls (n=14) to examine the expression of TRA16 and ERβ, and in vitro reporter gene assays, the mammalian two-hybrid method and immunoprecipitation in Cos-1 cells to investigate the relationships among TRA16, ERβ and TR2. We found that TRA16 was highly expressed in approximately 90% of the NSCLC tissues examined. TRA16 overexpression was significantly associated with TNM stage, tumor size, lymph node metastasis, tumor thrombus in vein, tumor differentiation and prognosis of NSCLC patients, in which TRA16 was shown to be an independent prognostic factor. Introduction of TRA16 into Cos-1 cells enhanced cell proliferation. Co-expression of TRA16 and ERβ in Cos-1 cells using different reporter gene systems and mammalian two-hybrid approaches revealed that TRA16 enhanced ERβ-mediated transcriptional activity. By adopting similar approaches, and immunoprecipitation and immunocytofluorescence assays, we found that TRA16 also interacted with TR2, and blocked the TR2 inhibitory effect on ERβ. Our findings demonstrate that TRA16 could be a promising diagnostic and prognostic biomarker in NSCLC, and promotes cancer cell growth through activation of the ERβ pathway by interacting with ERβ and TR2.
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Affiliation(s)
- Fang Fang
- Department of Thoracic Surgery Ⅱ, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, PR China
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Intratumoral estrogen concentration and expression of estrogen-induced genes in male breast carcinoma: comparison with female breast carcinoma. Discov Oncol 2012; 4:1-11. [PMID: 23096432 DOI: 10.1007/s12672-012-0126-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 10/08/2012] [Indexed: 12/28/2022] Open
Abstract
It is speculated that estrogens play important roles in the male breast carcinoma (MBC) as well as the female breast carcinoma (FBC). However, estrogen concentrations or molecular features of estrogen actions have not been reported in MBC, and biological significance of estrogens remains largely unclear in MBC. Therefore, we examined intratumoral estrogen concentrations, estrogen receptor (ER) α/ERβ status, and expression profiles of estrogen-induced genes in MBC tissues, and compared these with FBC. 17β-Estradiol concentration in MBC (n = 4) was significantly (14-fold) higher than that in non-neoplastic male breast (n = 3) and tended to be higher than that in FBC (n = 7). Results of microarray analysis clearly demonstrated that expression profiles of the two gene lists, which were previously reported as estrogen-induced genes in MCF-7 breast carcinoma cell line, were markedly different between MBC and FBC. In the immunohistochemistry, MBC tissues were frequently positive for aromatase (63 %) and 17β-hydroxysteroid dehydrogenase type 1 (67 %), but not for steroid sulfatase (6.7 %). A great majority (77 %) of MBC showed positive for both ERα and ERβ, and its frequency was significantly higher than FBC cases. These results suggest that estradiol is locally produced in MBC tissue by aromatase. Different expression profiles of the estrogen-induced genes may associate with different estrogen functions in MBC from FBC, which may be partly due to their ERα/ERβ status.
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Verma MK, Miki Y, Abe K, Nagasaki S, Niikawa H, Suzuki S, Kondo T, Sasano H. Co-expression of estrogen receptor beta and aromatase in Japanese lung cancer patients: Gender-dependent clinical outcome. Life Sci 2012; 91:800-8. [DOI: 10.1016/j.lfs.2012.08.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 08/10/2012] [Accepted: 08/25/2012] [Indexed: 11/25/2022]
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80
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Estrogen signaling in lung cancer: an opportunity for novel therapy. Cancers (Basel) 2012; 4:969-88. [PMID: 24213497 PMCID: PMC3712734 DOI: 10.3390/cancers4040969] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 08/09/2012] [Accepted: 09/10/2012] [Indexed: 01/02/2023] Open
Abstract
Lung cancer is the leading cause of cancer death in U.S. and represents a major public health burden. Epidemiologic data have suggested that lung cancer in women may possess different biological characteristics compared to men, as evidenced by a higher proportion of never-smokers among women with lung cancer. Emerging data indicate that female hormones such as estrogen and progesterone play a significant role in lung carcinogenesis. It has been reported that estrogen and progesterone receptors are expressed in lung cancer cell lines as well as in patient-derived tumors. Hormone related risk factors such as hormone replacement therapy have been implicated in lung carcinogenesis and several preclinical studies show activity of anti-estrogen therapy in lung cancer. In this review, we summarize the emerging evidence for the role of reproductive hormones in lung cancer and implications for lung cancer therapy.
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Abstract
Although women have an increased susceptibility to lung cancer, they also have a favorable clinical outcome. This may in part be due to female specific genetic and hormonal factors. In the present study, expression of ER-beta was investigated by immunohistochemistry using tissue samples from two cohorts: non-small cell lung cancer (NSCLC) diagnosed in 1999 in Manitoba and advanced NSCLC patients from the NCIC-CTG BR.18 trial. In the Manitoba cohort assessable tissue samples available in 79 patients (32 females and 47 males) and the majority (75%) had early stage disease. Fifty-one percent of patients expressed high levels of ER-beta (defined by ≥60, the median immunohistochemistry score) and its expression was comparable in males and females. The 3-year overall survival of the group was 53% and males had significantly worse survival compared to females (HR=2.37, 95%CI 1.15–4.91, P=0.02). Higher ER-beta 1 expression was associated with better survival in both univariate (HR=0.41, 95%CI 0.21–0.80, P=0.009) and in multivariate (HR=0.37, 95%CI 0.18–0.77, P=0.008) analysis. In the NCIC-CTG cohort that were more often later stage, assessable tissue samples from 48 cases were available however higher ER beta 1 expression correlated with poorer survival (HR= 1.94, 95%CI 1.01–3.75 P=0.047). These results suggest a differential impact of ER-beta 1 expression on clinical outcome by disease stage, that needs to be explored further and may explain contradictory observations reported in the literature.
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82
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Mas A, Cervelló I, Gil-Sanchis C, Faus A, Ferro J, Pellicer A, Simón C. Identification and characterization of the human leiomyoma side population as putative tumor-initiating cells. Fertil Steril 2012; 98:741-751.e6. [DOI: 10.1016/j.fertnstert.2012.04.044] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 04/26/2012] [Accepted: 04/26/2012] [Indexed: 12/31/2022]
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83
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Oh SW, Myung SK, Park JY, Lym YL, Ju W. Hormone therapy and risk of lung cancer: a meta-analysis. J Womens Health (Larchmt) 2012; 19:279-88. [PMID: 20095904 DOI: 10.1089/jwh.2009.1434] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The association between hormone therapy (HT) use and lung cancer risk is inconsistent in epidemiological studies. This meta-analysis was conducted to examine the association between HT and lung cancer risk. METHODS We searched MEDLINE (PubMed), EMBASE, and the Cochrane Library in April 2008. All articles searched were independently reviewed and selected by two evaluators according to predetermined inclusion and exclusion criteria. RESULTS We included a total of 11 studies (8 case-control studies and 3 prospective cohort studies), involving a total of 220,599 participants. When all studies were pooled, the odds ratio (OR) of HT use for lung cancer risk was 0.87 (95% confidence interval (CI) 0.74-1.02). In subgroup meta-analyses, there was no association among cohort studies (relative risk (RR) 1.01; 95% CI 0.74-1.38), while there was a significant association between HT use and lung cancer risk among case-control studies (OR 0.81; 95% CI 0.68-0.97) based on a random-effects model. No significant association between HT use and lung cancer risk was observed in most of the subgroup meta-analyses by methodological quality of study, type of HT use, duration of HT use, and histology of lung cancer, while significant protective effects were observed among former and never smokers except for current smokers. However, cumulative meta-analyses based on year of publication showed a distinct trend toward a protective effect of HT use on lung cancer risk in the recent studies. CONCLUSIONS Overall, the findings of this meta-analysis do not support the hypothesis that there is a link between HT use and lung cancer risk. Our findings should be evaluated in further prospective cohort studies.
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Affiliation(s)
- Seung Won Oh
- Department of Family Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
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84
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Verma MK, Miki Y, Abe K, Niikawa H, Sasano H. Cytoplasmic estrogen receptor β as a potential marker in human non-small cell lung carcinoma. Expert Opin Ther Targets 2012; 16 Suppl 1:S91-102. [PMID: 22313325 DOI: 10.1517/14728222.2011.630664] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Estrogen has been reported to promote an increased susceptibility to lung cancer development. This study focusses on the role of cytoplasmic estrogen receptor β (c-ERβ) in NSCLC. METHODS NSCLC (n = 162) cases were analyzed using immunohistochemistry (IHC) for c-ERβ expression and its association with clinicopathological variables. Significance of c-ERβ expression was further examined using in vitro studies in NSCLC cell lines. RESULTS Among ERβ and aromatase positive NSCLC females, c-ERβ was significantly associated with greater tumor diameter and tended to be associated with worse overall survival. A549 and LCAM1 cells expressed aromatase, as well as c-ERβ and nuclear ERβ (n-ERβ). U0126 (MAPK/extracellular-signal-regulated kinase (ERK) inhibitor) abrogated MAPK phosphorylation, caused by estradiol via c-ERβ, more effectively than ICI 182780 (ER blocker) in either cell line. However, ICI 182780 completely abrogated the estrogen responsive elements (ERE)-luciferase activity caused by estradiol. Combination therapy with ICI 182780 and U0126 turned out to be far more effective than either treatment alone in either A549 or LCAM1 cells. CONCLUSION The results indicated that ERβ may contribute to NSCLC via non-genomic action of estrogen through its cytoplasmic form, in addition to the genomic actions via n-ERβ. These actions of estrogen in NSCLCs may be abrogated by combination therapy with ICI 182780 and U0126.
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Affiliation(s)
- Mohit Kumar Verma
- Tohoku University Graduate School of Medicine, Department of Pathology, 2-1 Seriyo-machi, Aoba-ku, Sendai, Miyagi-ken 980 8575, Japan
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85
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Rouquette I, Lauwers-Cances V, Allera C, Brouchet L, Milia J, Nicaise Y, Laurent J, Delisle MB, Favre G, Didier A, Mazières J. Characteristics of lung cancer in women: importance of hormonal and growth factors. Lung Cancer 2011; 76:280-5. [PMID: 22197614 DOI: 10.1016/j.lungcan.2011.11.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 10/17/2011] [Accepted: 11/25/2011] [Indexed: 12/23/2022]
Abstract
Based on epidemiological, clinical, and preclinical data, lung carcinogenesis can be distinctive in women, suggesting that women should be treated differently depending on the expression of various specific biomarkers. We aimed to describe the hormonal and genetic profile of lung cancer in both men and women to identify gender specificities. Primary lung-tumor tissues from surgically treated patients, (50 men, 50 women) were analyzed and compared for expression of estrogen receptors (ER) α and β, progesterone receptors (PR), epidermal growth-factor receptor (EGFR), and HER2 (for EGFR and K-Ras mutations). These data were combined with clinical and outcome data. Fewer women with lung cancer were smokers (p=0.001) and they smoked fewer cigarettes (p=0.001). We observed a higher rate of EGFR mutations (p=0.02) and ERα expression (p=0.006) in women. ERβ and EGFR were also expressed more frequently in women (p=0.29 and p=0.16). HER2 was overexpressed regardless of gender in three men and two women. K-Ras was mutated in 16% of both men and women. Interestingly, there was a positive link between EGFR expression and expression of ERα (p=0.028) and ERβ (p=0.047) in both men and women. Expression of ERα was associated with improved disease-free survival (p=0.007). Our findings provide further evidence on the specificities of lung cancer in women. The differential expression of specific biomarkers, which could be targeted by therapy, favors the development of gender-based treatment guided by biomarker expression.
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86
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Verma MK, Miki Y, Sasano H. Sex steroid receptors in human lung diseases. J Steroid Biochem Mol Biol 2011; 127:216-22. [PMID: 21856418 DOI: 10.1016/j.jsbmb.2011.07.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 07/30/2011] [Indexed: 10/17/2022]
Abstract
Several epidemiological studies have reported that gender differences exist in clinical and biological manifestations of human lung diseases. In particular, women are far more likely to develop both neoplastic and non-neoplastic lung diseases than men. This gender difference above suggests that sex steroid may be involved in the pathogenesis of various lung diseases. These sex steroids mediate their effects through sex steroid receptors including estrogen receptors (ER) i.e. ERα and ERβ progesterone receptors (PR) i.e. PR-A and PR-B and androgen receptors (ARs), all of which have been reported to be expressed in lung tissue. Therefore it becomes important to clarify the potential roles of sex steroid receptor in both neoplastic and non-neoplastic lung diseases toward improved treatment options for the patients. In this review, we summarized a number of studies in humans and experimental animals that have identified possible roles of sex steroids in respiratory physiology and pathology.
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Affiliation(s)
- Mohit K Verma
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Miyagi-ken, Japan
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87
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Marquez-Garban DC, Mah V, Alavi M, Maresh EL, Chen HW, Bagryanova L, Horvath S, Chia D, Garon E, Goodglick L, Pietras RJ. Progesterone and estrogen receptor expression and activity in human non-small cell lung cancer. Steroids 2011; 76:910-20. [PMID: 21600232 PMCID: PMC3129425 DOI: 10.1016/j.steroids.2011.04.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 04/14/2011] [Accepted: 04/26/2011] [Indexed: 12/24/2022]
Abstract
Lung cancer is the most common cause of cancer mortality in male and female patients in the US. Although it is clear that tobacco smoking is a major cause of lung cancer, about half of all women with lung cancer worldwide are never-smokers. Despite a declining smoking population, the incidence of non-small cell lung cancer (NSCLC), the predominant form of lung cancer, has reached epidemic proportions particularly in women. Emerging data suggest that factors other than tobacco, namely endogenous and exogenous female sex hormones, have a role in stimulating NSCLC progression. Aromatase, a key enzyme for estrogen biosynthesis, is expressed in NSCLC. Clinical data show that women with high levels of tumor aromatase (and high intratumoral estrogen) have worse survival than those with low aromatase. The present and previous studies also reveal significant expression and activity of estrogen receptors (ERα, ERβ) in both extranuclear and nuclear sites in most NSCLC. We now report further on the expression of progesterone receptor (PR) transcripts and protein in NSCLC. PR transcripts were significantly lower in cancerous as compared to non-malignant tissue. Using immunohistochemistry, expression of PR was observed in the nucleus and/or extranuclear compartments in the majority of human tumor specimens examined. Combinations of estrogen and progestins administered in vitro cooperate in promoting tumor secretion of vascular endothelial growth factor and, consequently, support tumor-associated angiogenesis. Further, dual treatment with estradiol and progestin increased the numbers of putative tumor stem/progenitor cells. Thus, ER- and/or PR-targeted therapies may offer new approaches to manage NSCLC.
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MESH Headings
- AC133 Antigen
- Aldehyde Dehydrogenase/metabolism
- Animals
- Antigens, CD/metabolism
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/pathology
- Cell Line, Tumor
- Cell Nucleus/metabolism
- Cell Proliferation
- Culture Media, Conditioned
- Endothelial Cells/drug effects
- Endothelial Cells/physiology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/physiology
- Estradiol/pharmacology
- Estradiol/physiology
- Estrogens/pharmacology
- Estrogens/physiology
- Female
- Glycoproteins/metabolism
- Humans
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Male
- Mice
- Mice, SCID
- Mifepristone/pharmacology
- Neoplasm Transplantation
- Neoplastic Stem Cells/drug effects
- Neoplastic Stem Cells/metabolism
- Peptides/metabolism
- Progestins/antagonists & inhibitors
- Progestins/pharmacology
- Receptors, Estrogen/metabolism
- Receptors, Progesterone/genetics
- Receptors, Progesterone/metabolism
- Transcription, Genetic
- Umbilical Cord/cytology
- Vascular Endothelial Growth Factor A/metabolism
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Affiliation(s)
- Diana C. Marquez-Garban
- Department of Medicine, Division of Hematology/Oncology, Los Angeles, California, 90095, USA
| | - Vei Mah
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
| | - Mohammad Alavi
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
| | - Erin L. Maresh
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
| | - Hsiao-Wang Chen
- Department of Medicine, Division of Hematology/Oncology, Los Angeles, California, 90095, USA
| | - Lora Bagryanova
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
| | - Steve Horvath
- Department of Biostatistics, Los Angeles, California, 90095, USA
- Department of Human Genetics, Los Angeles, California, 90095, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, 90095, USA
| | - David Chia
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, 90095, USA
| | - Edward Garon
- Department of Medicine, Division of Hematology/Oncology, Los Angeles, California, 90095, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, 90095, USA
| | - Lee Goodglick
- Department of Pathology and Laboratory Medicine, Los Angeles, California, 90095, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, 90095, USA
| | - Richard J. Pietras
- Department of Medicine, Division of Hematology/Oncology, Los Angeles, California, 90095, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, 90095, USA
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88
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Sun HB, Zheng Y, Ou W, Fang Q, Li P, Ye X, Zhang BB, Yang H, Wang SY. Association between hormone receptor expression and epidermal growth factor receptor mutation in patients operated on for non-small cell lung cancer. Ann Thorac Surg 2011; 91:1562-7. [PMID: 21524465 DOI: 10.1016/j.athoracsur.2011.02.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 01/31/2011] [Accepted: 02/04/2011] [Indexed: 01/27/2023]
Abstract
BACKGROUND Estrogen receptor (ER) and progesterone receptor (PR) play important roles in breast cancer. Similarly, there have been several reports of ER and PR expression in lung cancers, but the results have not been consistent. The aim of this study was to investigate the association between hormone receptor expression and clinicopathologic factors and epidermal growth factor receptor (EGFR) mutations in non-small cell lung cancer (NSCLC). METHODS We evaluated 316 resected NSCLC specimens for ER-α, PR, human epidermal growth factor receptor 2, and aromatase (n=272) expression using immunohistochemical methods. EGFR mutations were evaluated with polymerase chain reaction (PCR). RESULTS ER-α and PR were detected in 36.1% and 44.9% of all patients, respectively. The expression of ER-α was observed mostly in cytoplasm (94.7%) and the expression of PR was observed mostly in nucleus (95.8%). Aromatase was detected in the cytoplasm of 64.0% of patients. ER-α expression was significantly associated with female gender (p=0.004). The expression of PR was significantly associated with better clinicopathologic features. ER-α expression showed a positive correlation with PR (r=0.275; p<0.001) and aromatase (r=0.244; p<0.001) expression levels. EGFR mutation was independently associated with the female gender (p=0.001), negative expression of PR (p<0.001), and negative expression of aromatase (p=0.027). CONCLUSIONS The expression of ER-α and PR distinguish a subset of NSCLC that has defined clinicopathologic features. Negative expression of PR and aromatase correlate with EGFR mutation.
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Affiliation(s)
- Hai-bo Sun
- Department of Thoracic Surgery, Henan Cancer Hospital, Zhengzhou University, Zhengzhou, People's Republic of China
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89
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Bogush TA, Dudko EA, Beme AA, Bogush EA, Kim AI, Polotsky BE, Tjuljandin SA, Davydov MI. Estrogen receptors, antiestrogens, and non-small cell lung cancer. BIOCHEMISTRY (MOSCOW) 2010; 75:1421-7. [DOI: 10.1134/s0006297910120011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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90
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Jeong Y, Xie Y, Xiao G, Behrens C, Girard L, Wistuba II, Minna JD, Mangelsdorf DJ. Nuclear receptor expression defines a set of prognostic biomarkers for lung cancer. PLoS Med 2010; 7:e1000378. [PMID: 21179495 PMCID: PMC3001894 DOI: 10.1371/journal.pmed.1000378] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 11/02/2010] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The identification of prognostic tumor biomarkers that also would have potential as therapeutic targets, particularly in patients with early stage disease, has been a long sought-after goal in the management and treatment of lung cancer. The nuclear receptor (NR) superfamily, which is composed of 48 transcription factors that govern complex physiologic and pathophysiologic processes, could represent a unique subset of these biomarkers. In fact, many members of this family are the targets of already identified selective receptor modulators, providing a direct link between individual tumor NR quantitation and selection of therapy. The goal of this study, which begins this overall strategy, was to investigate the association between mRNA expression of the NR superfamily and the clinical outcome for patients with lung cancer, and to test whether a tumor NR gene signature provided useful information (over available clinical data) for patients with lung cancer. METHODS AND FINDINGS Using quantitative real-time PCR to study NR expression in 30 microdissected non-small-cell lung cancers (NSCLCs) and their pair-matched normal lung epithelium, we found great variability in NR expression among patients' tumor and non-involved lung epithelium, found a strong association between NR expression and clinical outcome, and identified an NR gene signature from both normal and tumor tissues that predicted patient survival time and disease recurrence. The NR signature derived from the initial 30 NSCLC samples was validated in two independent microarray datasets derived from 442 and 117 resected lung adenocarcinomas. The NR gene signature was also validated in 130 squamous cell carcinomas. The prognostic signature in tumors could be distilled to expression of two NRs, short heterodimer partner and progesterone receptor, as single gene predictors of NSCLC patient survival time, including for patients with stage I disease. Of equal interest, the studies of microdissected histologically normal epithelium and matched tumors identified expression in normal (but not tumor) epithelium of NGFIB3 and mineralocorticoid receptor as single gene predictors of good prognosis. CONCLUSIONS NR expression is strongly associated with clinical outcomes for patients with lung cancer, and this expression profile provides a unique prognostic signature for lung cancer patient survival time, particularly for those with early stage disease. This study highlights the potential use of NRs as a rational set of therapeutically tractable genes as theragnostic biomarkers, and specifically identifies short heterodimer partner and progesterone receptor in tumors, and NGFIB3 and MR in non-neoplastic lung epithelium, for future detailed translational study in lung cancer. Please see later in the article for the Editors' Summary.
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Affiliation(s)
- Yangsik Jeong
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Yang Xie
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Guanghua Xiao
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Carmen Behrens
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
| | - Luc Girard
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Ignacio I. Wistuba
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
- Department of Pathology, MD Anderson Cancer Center, University of Texas, Houston, Texas, United States of America
| | - John D. Minna
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- * E-mail: (JDM); (DJM)
| | - David J. Mangelsdorf
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- * E-mail: (JDM); (DJM)
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91
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Wang QS, Li M, Zhang LY, Jin Y, Tong DD, Yu Y, Bai J, Huang Q, Liu FL, Liu A, Lee KY, Fu SB. Down-regulation of ING4 is associated with initiation and progression of lung cancer. Histopathology 2010; 57:271-81. [PMID: 20716169 DOI: 10.1111/j.1365-2559.2010.03623.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS Tumour suppressor ING4 is one of ING family genes, which are involved in cell cycle arrest, gene transcription regulation, DNA repair and apoptosis. ING4 inhibition has been reported in various tumours, including gliomas, breast tumours, and stomach adenocarcinoma. The aim was to evaluate ING4 expression in lung cancers. METHOD AND RESULTS By immunohistochemistry of 246 lung tumour tissues, reduced ING4 nuclear and cytoplasmic expression were both revealed in lung cancer and associated with tumour grade. Interestingly, compared with normal tissues, we found more tumours with ING4 expression in the cytoplasm higher than in the nucleus. Nuclear ING4 inhibition correlated with the tumour stage and lymph node metastasis. Consistent with these findings, semiquantitative reverse transcriptase-polymerase chain reaction and Western blotting demonstrated decreased ING4 mRNA and expression in 100% (50/50) tumour tissues. Furthermore, ING4 expression was lower in grade III than in grades I-II tumours. Reduced ING4 mRNA correlated with lymph node metastasis. CONCLUSIONS Our results indicate that overall inhibition of ING4 expression and ING4 expression higher in cytoplasm than in nucleus of tumour cells may be involved in the initiation and progression of lung cancers, and thus, analysis for ING4 expression may be useful as a clinical diagnostic and prognostic tool for lung cancer.
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Affiliation(s)
- Qiu-shi Wang
- Department of Cardiothoracic Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
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92
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Chakraborty S, Ganti AK, Marr A, Batra SK. Lung cancer in women: role of estrogens. Expert Rev Respir Med 2010; 4:509-18. [PMID: 20658912 DOI: 10.1586/ers.10.50] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The incidence of lung cancer in females is increasing, in contrast to that seen in males. In addition, the proportion of lung cancer cases in women attributable to smoking is approximately half of that seen in males. Female sex hormones, especially estrogen, may play a key role in this. Estrogen receptors ERalpha and ERbeta have been detected on lung cancer cells and there is new evidence suggesting that hormone-replacement therapy may increase both the incidence of, and mortality from, lung cancer in women. Laboratory evidence lends credence to the carcinogenic effects of estrogens in lung cancer. This article summarizes the current evidence on their role in lung cancer.
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Affiliation(s)
- Subhankar Chakraborty
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-7680, USA
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93
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Miki Y, Suzuki T, Abe K, Suzuki S, Niikawa H, Iida S, Hata S, Akahira JI, Mori K, Evans DB, Kondo T, Yamada-Okabe H, Sasano H. Intratumoral localization of aromatase and interaction between stromal and parenchymal cells in the non-small cell lung carcinoma microenvironment. Cancer Res 2010; 70:6659-69. [PMID: 20710045 DOI: 10.1158/0008-5472.can-09-4653] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Estrogens produced as a result of intratumoral aromatization has been recently shown to play important roles in proliferation of human non-small cell lung carcinomas (NSCLC), but the details have remained largely unknown. Therefore, in this study, we evaluated the possible roles of intratumoral aromatase in NSCLCs as follows: (a) evaluation of intratumoral localization of aromatase mRNA/protein in six lung adenocarcinoma cases using laser capture microdissection combined with quantitative reverse transcriptase-PCR and immunohistochemistry; (b) examination of the possible effects of isolated stromal cells from lung carcinoma tissues on aromatase mRNA transcript expression in lung carcinoma cell lines (A549 and LK87) through a coculture system; and (c) screening of cytokines derived from stromal LK001S and LK002S cells using cytokine antibody arrays and subsequent evaluation of effects of these cytokines on aromatase expression in A549 and LK87. Both aromatase mRNA and protein were mainly detected in intratumoral carcinoma cells but not in stromal cells. Aromatase expression of A549 and LK87 was upregulated in the presence of LK001S or LK002S cells. Several cytokines such as interleukin-6 (IL-6), oncostatin M, and tumor necrosis factor-alpha, all known as inducible factors of aromatase gene, were detected in conditioned media of LK001S and LK002S cells. Treatment of both oncostatin M and IL-6 induced aromatase gene expression in A549 an LK87, respectively. These results all indicated that intratumoral microenvironments, especially carcinoma-stromal cell interactions, play a pivotal role in the regulation of intratumoral estrogen synthesis through aromatase expression in human lung adenocarcinomas.
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Affiliation(s)
- Yasuhiro Miki
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
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94
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Stabile LP, Dacic S, Land SR, Lenzner DE, Dhir R, Acquafondata M, Landreneau RJ, Grandis JR, Siegfried JM. Combined analysis of estrogen receptor beta-1 and progesterone receptor expression identifies lung cancer patients with poor outcome. Clin Cancer Res 2010; 17:154-64. [PMID: 21062926 DOI: 10.1158/1078-0432.ccr-10-0992] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE Steroid hormones and growth factors affect lung cancer, and it is possible they act in concert to influence patient outcome. EXPERIMENTAL DESIGN Primary lung tumors and normal lung tissue were analyzed for expression and localization of estrogen receptor α and β-1 (ERα and ERβ), aromatase, progesterone receptor (PR), and epidermal growth factor receptor (EGFR). RESULTS Tumors expressed higher levels of ERβ compared to matched normal lung, whereas the reverse was true of PR. High cytoplasmic ERβ expression was identified as an independent negative prognostic predictor of overall survival (OS; HR = 1.67), and low total PR was identified as an independent negative predictor of time to progression (TTP; HR = 1.59). After adjusting for stage, age, sex, and smoking, combined high cytoplasmic ERβ and low total PR showed enhanced effects on OS (HR = 2.64) and on TTP (HR = 6.02). Further effects on OS were observed when EGFR expression was included (HR = 5.32). Patients with low cytoplasmic ERβ, low aromatase, low EGFR, and high total PR had shorter OS than patients with the opposite pattern (HR = 6.60). Contribution of these markers to survival showed no significant sex differences in a multivariable model. ERα was elevated in tumors but was not predictive of survival, and appears to represent a variant ERα protein that is only recognized by a C-terminal antibody. CONCLUSIONS Hormonal and EGFR pathways together may contribute to lung cancer prognosis. Lung tumors with high ERβ-1/low PR may define patients with aggressive biology. A validation study is necessary to fully assess the predictive value of these markers.
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Affiliation(s)
- Laura P Stabile
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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95
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Shimizu Y, Takeuchi T, Mita S, Notsu T, Mizuguchi K, Kyo S. Krüppel-like factor 4 mediates anti-proliferative effects of progesterone with G₀/G₁ arrest in human endometrial epithelial cells. J Endocrinol Invest 2010; 33:745-50. [PMID: 20479568 DOI: 10.1007/bf03346681] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Activation of the progesterone receptor (PR) inhibits cell proliferation in various reproductive tissues. However, the molecular mechanisms underlying the regulation of cell proliferation by PR remain poorly understood. It is well established that Krüppel-like factor 4 (KLF4), a family of zinc fingercontaining transcription factors, induces cell cycle arrest in epithelial cells. In this study, we investigated whether KLF4 served as a target of PR activation during cell proliferation using human endometrial epithelial cells. PR agonists, progesterone and dienogest, were found to produce a lasting increase in the expression of KLF4 mRNA, followed by a decrease in cyclin D1 mRNA, and inhibit cell proliferation with G₀/G₁ arrest. KLF4 knockdown using KLF4 small interferingRNA abrogated the inhibition of cell proliferation by PR agonists. In addition, forced expression of KLF4 inhibited cyclin D1 promoter transactivation. These results suggest that PR agonists induce KLF4 expression and then inhibit cyclin D1 expression, and consequently inhibit cell proliferation in human endometrial epithelial cells. In terms of human reproductive tissue, KLF4 may be a factor concerning cell cycle, directly responsive to PR activation.
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Affiliation(s)
- Y Shimizu
- Pharmaceutical Research Center, Mochida Pharmaceutical Co., Ltd., 722 Jimba-aza-Uenohara, Gotemba, Shizuoka 412-8524, Japan.
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96
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Dioufa N, Kassi E, Papavassiliou AG, Kiaris H. Atypical induction of the unfolded protein response by mifepristone. Endocrine 2010; 38:167-73. [PMID: 21046477 DOI: 10.1007/s12020-010-9362-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Accepted: 06/22/2010] [Indexed: 12/01/2022]
Abstract
Mifepristone is a synthetic progesterone antagonist that is being used widely for the treatment of various conditions such as endometriosis, glaucoma, meningiomas, breast, ovarian and prostate cancer, as well as for research purposes, in the conditional induction of gene expression by using artificial plasmid-based systems. Here, we report that exposure of A549 human lung cancer cells to mifepristone caused an atypical induction of the cellular unfolded protein response, as evidenced by the time-dependent stimulation of RNA levels of the chaperone Grp94 and PDIa, as well as the endoplasmic reticulum stress-associated receptors ATF6, PERK and eIF2 but not of their downstream target, transcription factor ATF4. This profile was very different from that of progesterone, which at the same dose as mifepristone, failed to induce all of the ER-stress-related genes examined, apart from PERK. Furthermore, XBP1, a transcription factor that is regulated predominantly by alternative splicing by the IRE1 receptor, remains unspliced and therefore inactive either by mifepristone or progesterone treatment. Finally, the pro-apoptotic molecules CHOP and BIM are only induced in the presence of tunicamycin in the culture medium. Tunicamycin, the most commonly used pharmacologic inducer of ER stress that triggers the canonical ER stress response, was used for comparison purposes. Our results suggest that mifepristone can elicit an atypical ER stress response when used at different doses and for different time points. The subsequent induction of UPR should be taken into consideration when this agent is being used either for therapeutic or for experimental uses.
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Affiliation(s)
- N Dioufa
- Department of Biochemistry, University of Athens Medical School, M. Asias 75, 115 27, Athens, Greece
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97
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Chlebowski RT, Anderson GL, Manson JE, Schwartz AG, Wakelee H, Gass M, Rodabough RJ, Johnson KC, Wactawski-Wende J, Kotchen JM, Ockene JK, O'Sullivan MJ, Hubbell FA, Chien JW, Chen C, Stefanick ML. Lung cancer among postmenopausal women treated with estrogen alone in the women's health initiative randomized trial. J Natl Cancer Inst 2010; 102:1413-21. [PMID: 20709992 PMCID: PMC2943522 DOI: 10.1093/jnci/djq285] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2009] [Revised: 06/23/2010] [Accepted: 07/06/2010] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND In the Women's Health Initiative (WHI) randomized controlled trial, use of estrogen plus progestin increased lung cancer mortality. We conducted post hoc analyses in the WHI trial evaluating estrogen alone to determine whether use of conjugated equine estrogen without progestin had a similar adverse influence on lung cancer. METHODS The WHI study is a randomized, double-blind, placebo-controlled trial conducted in 40 centers in the United States. A total of 10 739 postmenopausal women aged 50-79 years who had a previous hysterectomy were randomly assigned to receive a once-daily 0.625-mg tablet of conjugated equine estrogen (n = 5310) or matching placebo (n = 5429). Incidence and mortality rates for all lung cancers, small cell lung cancers, and non-small cell lung cancers in the two randomization groups were compared by use of hazard ratios (HRs) and 95% confidence intervals (CIs) that were estimated from Cox proportional hazards regression analyses. Analyses were by intention to treat, and all statistical tests were two-sided. RESULTS After a mean of 7.9 years (standard deviation = 1.8 years) of follow-up, 61 women in the hormone therapy group were diagnosed with lung cancer compared with 54 in the placebo group (incidence of lung cancer per year = 0.15% vs 0.13%, respectively; HR of incidence = 1.17, 95% CI = 0.81 to 1.69, P = .39). Non-small cell lung cancers were of comparable number, stage, and grade in both groups. Deaths from lung cancer did not differ between the two groups (34 vs 33 deaths in estrogen and placebo groups, respectively; HR of death = 1.07, 95% CI = 0.66 to 1.72, P = .79). CONCLUSION Unlike use of estrogen plus progestin, which increased deaths from lung cancer, use of conjugated equine estrogen alone did not increase incidence or death from lung cancer.
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Affiliation(s)
- Rowan T Chlebowski
- Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center, Torrance, CA 90502, USA.
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98
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Hogervorst JGF, Baars BJ, Schouten LJ, Konings EJM, Goldbohm RA, van den Brandt PA. The carcinogenicity of dietary acrylamide intake: a comparative discussion of epidemiological and experimental animal research. Crit Rev Toxicol 2010; 40:485-512. [PMID: 20170357 DOI: 10.3109/10408440903524254] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Since 2002, it is known that the probable human carcinogen acrylamide is present in commonly consumed carbohydrate-rich foods, such as French fries and potato chips. In this review, the authors discuss the body of evidence on acrylamide carcinogenicity from both epidemiological and rodent studies, including variability, strengths and weaknesses, how both types of evidence relate, and possible reasons for discrepancies. In both rats and humans, increased incidences of various cancer types were observed. In rats, increased incidences of mammary gland, thyroid tumors and scrotal mesothelioma were observed in both studies that were performed. In humans, increased risks of ovarian and endometrial cancers, renal cell cancer, estrogen (and progesterone) receptor-positive breast cancer, and oral cavity cancer (the latter in non-smoking women) were observed. Some cancer types were found in both rats and humans, e.g., endometrial cancer (observed in one of the two rat studies), but there are also some inconsistencies. Interestingly, in humans, some indications for inverse associations were observed for lung and bladder cancers in women, and prostate and oro- and hypopharynx cancers in men. These latter observations indicate that genotoxicity may not be the only mechanism by which acrylamide causes cancer. The estimated risks based on the epidemiological studies for the sites for which a positive association was observed were considerably higher than those based on extrapolations from the rat studies. The observed pattern of increased risks in the rat and epidemiological studies and the decreased risks in the epidemiological studies suggests that acrylamide might influence hormonal systems, for which rodents may not be good models.
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Affiliation(s)
- Janneke G F Hogervorst
- Department of Epidemiology, GROW-School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands.
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99
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Wang H, Zhang D, Wu W, Zhang J, Guo D, Wang Q, Jing T, Xu C, Bian X, Yang K. Overexpression and gender-specific differences of SRC-3 (SRC-3/AIB1) immunoreactivity in human non-small cell lung cancer: an in vivo study. J Histochem Cytochem 2010; 58:1121-7. [PMID: 20852035 DOI: 10.1369/jhc.2010.956979] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Steroid receptor coactivator-3 (SRC-3) has been reported to be overexpressed in the development and progression of many tumor types. SRC-3 has been detected in several lung cancer cell lines, but its expression and clinical significance in non-small cell lung cancer (NSCLC) remain unclear. In this study, 48 NSCLC tissues were collected and tissue microarrays were performed. The expression of SRC-3 was examined using nickel-intensified IHC. The results showed that of these 48 cases, 18 (37.5%) exhibited high levels of SRC-3 immunoreactivity, 23 (47.9%) exhibited moderate levels of SRC-3 immunoreactivity, and 7 (14.6%) were negative; thus, the total frequency of SRC-3 overexpression was 85.4% (41/48). This SRC-3 overexpression frequency was similar to the overexpression frequency observed for squamous cell carcinoma and adenocarcinoma (82.1% vs 90%) and for metastasis and non-metastasis patients (84.6% vs 85.7%). Data analysis demonstrated a significantly higher overexpression frequency in male patients compared with that in female patients (88.6% vs 76.9%). However, female patients tended to have higher expression levels of SRC-3, as measured by immunoreactivity, than male patients. These results demonstrate a high frequency of SRC-3 overexpression in NSCLC with a gender difference, suggesting that there is a specific role for SRC-3 in the pathogenesis of NSCLC.
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Affiliation(s)
- Haidong Wang
- Department of Thoracic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
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100
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Baik CS, Strauss GM, Speizer FE, Feskanich D. Reproductive factors, hormone use, and risk for lung cancer in postmenopausal women, the Nurses' Health Study. Cancer Epidemiol Biomarkers Prev 2010; 19:2525-33. [PMID: 20739629 DOI: 10.1158/1055-9965.epi-10-0450] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND There is increasing evidence suggesting that female hormones may play a significant role in lung cancer development. We evaluated the associations between reproductive factors, exogenous hormone use, and lung cancer incidence in the Nurses' Health Study. METHODS We assessed age at menopause, age at menarche, type of menopause, parity, age at first birth, postmenopausal hormone (PMH) use, and past oral contraceptive use in 107,171 postmenopausal women. Cox models were used to estimate the hazard ratios for each exposure, adjusting for smoking and other covariates. RESULTS We identified 1,729 lung cancer cases during follow-up from 1984 to 2006. Menopause onset before 44 years of age (hazard ratio, 1.39; 95% confidence interval, 1.14-1.70) and past oral contraceptive use for >5 years (hazard ratio, 1.22; 95% confidence interval, 1.05-1.42) were associated with increased lung cancer risk. These associations were strongest in current smokers and small cell histology. In never smokers, increased parity was associated with decreased risk among parous women (P trend = 0.03), whereas in current smokers, older age at first birth was associated with increased risk (P trend = 0.02). PMH use was not associated with overall lung cancer incidence. However, nonsignificant results of increased risk in adenocarcinoma were seen with current PMH use. CONCLUSIONS Our findings suggest female hormones may influence lung carcinogenesis, although the effect is likely modest, varied by histologic subtype, and altered by smoking. IMPACT Further investigation of the pathophysiology of female hormones in lung cancer subtypes and their interaction with smoking will lead to better understanding of lung carcinogenesis.
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Affiliation(s)
- Christina S Baik
- Division of Hematology-Oncology, Tufts Medical Center, Boston, Massachusetts, USA.
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