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Jiménez-Cortegana C, López-Saavedra A, Sánchez-Jiménez F, Pérez-Pérez A, Castiñeiras J, Virizuela-Echaburu JA, de la Cruz-Merino L, Sánchez-Margalet V. Leptin, Both Bad and Good Actor in Cancer. Biomolecules 2021; 11:913. [PMID: 34202969 PMCID: PMC8235379 DOI: 10.3390/biom11060913] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/04/2021] [Accepted: 06/12/2021] [Indexed: 02/06/2023] Open
Abstract
Leptin is an important regulator of basal metabolism and food intake, with a pivotal role in obesity. Leptin exerts many different actions on various tissues and systems, including cancer, and is considered as a linkage between metabolism and the immune system. During the last decades, obesity and leptin have been associated with the initiation, proliferation and progression of many types of cancer. Obesity is also linked with complications and mortality, irrespective of the therapy used, affecting clinical outcomes. However, some evidence has suggested its beneficial role, called the "obesity paradox", and the possible antitumoral role of leptin. Recent data regarding the immunotherapy of cancer have revealed that overweight leads to a more effective response and leptin may probably be involved in this beneficial process. Since leptin is a positive modulator of both the innate and the adaptive immune system, it may contribute to the increased immune response stimulated by immunotherapy in cancer patients and may be proposed as a good actor in cancer. Our purpose is to review this dual role of leptin in cancer, as well as trying to clarify the future perspectives of this adipokine, which further highlights its importance as a cornerstone of the immunometabolism in oncology.
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Affiliation(s)
- Carlos Jiménez-Cortegana
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain; (C.J.-C.); (A.L.-S.); (F.S.-J.); (A.P.-P.)
| | - Ana López-Saavedra
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain; (C.J.-C.); (A.L.-S.); (F.S.-J.); (A.P.-P.)
| | - Flora Sánchez-Jiménez
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain; (C.J.-C.); (A.L.-S.); (F.S.-J.); (A.P.-P.)
| | - Antonio Pérez-Pérez
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain; (C.J.-C.); (A.L.-S.); (F.S.-J.); (A.P.-P.)
| | - Jesús Castiñeiras
- Urology Service, Virgen Macarena University Hospital, University of Seville, 41009 Sevilla, Spain;
| | - Juan A. Virizuela-Echaburu
- Medical Oncology Service, Virgen Macarena University Hospital, University of Seville, 41009 Sevilla, Spain; (J.A.V.-E.); (L.d.l.C.-M.)
| | - Luis de la Cruz-Merino
- Medical Oncology Service, Virgen Macarena University Hospital, University of Seville, 41009 Sevilla, Spain; (J.A.V.-E.); (L.d.l.C.-M.)
| | - Víctor Sánchez-Margalet
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain; (C.J.-C.); (A.L.-S.); (F.S.-J.); (A.P.-P.)
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2
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Álvarez-Artime A, García-Soler B, Sainz RM, Mayo JC. Emerging Roles for Browning of White Adipose Tissue in Prostate Cancer Malignant Behaviour. Int J Mol Sci 2021; 22:5560. [PMID: 34074045 PMCID: PMC8197327 DOI: 10.3390/ijms22115560] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022] Open
Abstract
In addition to its well-known role as an energy repository, adipose tissue is one of the largest endocrine organs in the organism due to its ability to synthesize and release different bioactive molecules. Two main types of adipose tissue have been described, namely white adipose tissue (WAT) with a classical energy storage function, and brown adipose tissue (BAT) with thermogenic activity. The prostate, an exocrine gland present in the reproductive system of most mammals, is surrounded by periprostatic adipose tissue (PPAT) that contributes to maintaining glandular homeostasis in conjunction with other cell types of the microenvironment. In pathological conditions such as the development and progression of prostate cancer, adipose tissue plays a key role through paracrine and endocrine signaling. In this context, the role of WAT has been thoroughly studied. However, the influence of BAT on prostate tumor development and progression is unclear and has received much less attention. This review tries to bring an update on the role of different factors released by WAT which may participate in the initiation, progression and metastasis, as well as to compile the available information on BAT to discuss and open a new field of knowledge about the possible protective role of BAT in prostate cancer.
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Affiliation(s)
- Alejandro Álvarez-Artime
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
| | - Belén García-Soler
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
| | - Rosa María Sainz
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
| | - Juan Carlos Mayo
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
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3
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Wu X, Long X, Yang C, Chen H, Sharkey C, Rashid K, Hu M, Liu Y, Huang Q, Chen Q, Hu J, Jiang H. Icaritin reduces prostate cancer progression via inhibiting high-fat diet-induced serum adipokine in TRAMP mice model. J Cancer 2020; 11:6556-6564. [PMID: 33046976 PMCID: PMC7545683 DOI: 10.7150/jca.48413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/07/2020] [Indexed: 12/11/2022] Open
Abstract
Objective: Obesity resulting from high-fat diets has a close relationship with the morbidity and mortality associated with Prostate cancer (PCa) in males. The anti-cancer role of Icaritin (ICT, a traditional Chinese herbal medicine) has been reported in several types of cancer including PCa. Adipokines are novel adipocyte-specific secretory protein, which plays a key role in the development of various diseases including obesity, diabetes, atherosclerosis, and cancer. However, the function of ICT and the molecular mechanisms underlying its role in PCa regression through modulation of adipokines have not been studied. Here, we assessed the anti-cancer properties of ICT under the influence of human epidermal growth factor receptor type 2 (HER2) pathway modulating adipokines in obese PCa models. Materials and Methods: In this study, we used transgenic adenocarcinoma of mouse prostate (TRAMP), a well-established animal model for the study of PCa pathogenesis. All the animals were fed on a high-fat diet (HFD with 40% fat) and divided into two groups, one received ICT solution of 30 mg/kg body bwt (i.p) while the other group served as control without any ICT treatment. The mortality rate, tumor formation and fat ratio were assessed by histopathological and magnetic resonance analysis at different time points of 20th, 24th and 28th weeks. The protein expression of HER2 and serum levels of adipokines were measured using western blotting, IHC and multiplex immunoassays. The PCa grade in 12 TRAMP mice were longitudinally evaluated to visualize PCa development and progression upon post-surgery using PET/CT scanning. Results: We observed that ICT treatment significantly reduces the total mortality rate of TRAMP mice (p = 0.045) and the percentage of prostate intraepithelial neoplasia (PIN) or PCa (p = 0.029). Interestingly, significantly decreased levels of leptin (p = 0.006 @20th wk) and the elevated levels of adiponectin (p = 0.030 @20th wk) were observed in different subgroups upon ICT treatment in a time-dependent manner. In addition, a decrease level of HER2 (p = 0.032 @28th wk) and an elevated level of PEA3 (p = 0.014 @28th wk) were also detected in ICT treated group. The PET/CT-based imaging showed that ICT vs non-ICT treated mice had different standard uptake value and metastasis. Discussion and Conclusion: Our results showed potent anti-cancer properties of ICT through the modulation of adipokine secretion may alter the expression and activation of HER2 pathway as an alternative mechanism to prevent PCa progression. Altogether, our findings indicate that ICT could be a promising cancer preventive agent with the potential to target and eradicate tumor cells in obese PCa patients.
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Affiliation(s)
- Xiaobo Wu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Department of General Surgery, Division of Urology, Beth Isreal Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xingbo Long
- Department of General Surgery, Division of Urology, Beth Isreal Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Department of Urology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Chen Yang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Huan Chen
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Christina Sharkey
- Department of General Surgery, Division of Urology, Beth Isreal Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Khalid Rashid
- Department of Medical Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Mengbo Hu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yufei Liu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Qi Huang
- PET center, Huashan Hospital, Fudan University, Shanghai, China
| | - Qi Chen
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jimeng Hu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Haowen Jiang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Fudan University, Shanghai, China
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4
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Kamel HFM, Nassir AM, Al Refai AA. Assessment of expression levels of leptin and leptin receptor as potential biomarkers for risk of prostate cancer development and aggressiveness. Cancer Med 2020; 9:5687-5696. [PMID: 32573960 PMCID: PMC7402836 DOI: 10.1002/cam4.3082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/03/2020] [Accepted: 04/09/2020] [Indexed: 01/06/2023] Open
Abstract
Background Prostate cancer (PCa) is one of the most frequently diagnosed cancers worldwide. Despite the growing evidence associating obesity and adipokines, particularly leptin and its receptors, with cancer development and progression, it is still a debatable matter in PCa. Objectives We aimed to assess the role of leptin and its receptors as potential biomarkers for the risk of PCa development and aggressiveness. Methods In this study, 176 men were included and categorized according to an established histopathological diagnosis into three age‐ and BMI‐matched groups. The PCa group included 56 patients while the BPH group and the control group comprised 60 men each. Serum levels of total PSA (tPSA) were assessed by ELISA and mRNA expression levels of leptin and leptin receptors were assessed by RT‐PCR. Results Leptin and leptin receptor mRNA expression levels were significantly higher in PCa patients relative to BPH and to healthy control men. Both were overexpressed in PCa patients with aggressive and distantly metastasizing tumors compared to patients with confined tumors. Leptin receptor mRNA was an independent predictor of high Gleason score ≥ 7, distant metastasis, LN, and seminal vesicles invasion. Conclusion Leptin and its receptors are suggested to be potential biomarkers for PCa; leptin receptor mRNA might predict risk and aggressiveness of PCa.
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Affiliation(s)
- Hala Fawzy Mohamed Kamel
- Faculty of Medicine, Biochemistry Department, Umm Al-Qura University, Makkah, Saudi Arabia.,Faculty of Medicine, Medical Biochemistry Department, Ain Shams University, Cairo, Egypt
| | - Anmar M Nassir
- Urology Department, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Abeer A Al Refai
- Faculty of Medicine, Biochemistry Department, Umm Al-Qura University, Makkah, Saudi Arabia.,Faculty of Medicine, Medical Biochemistry and Molecular Biology Department, Menoufia University, Shebin Al-Kom, Egypt
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Relationship of self-reported body size and shape with risk for prostate cancer: A UK case-control study. PLoS One 2020; 15:e0238928. [PMID: 32941451 PMCID: PMC7498010 DOI: 10.1371/journal.pone.0238928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 08/26/2020] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Previous evidence has suggested a relationship between male self-reported body size and the risk of developing prostate cancer. In this UK-wide case-control study, we have explored the possible association of prostate cancer risk with male self-reported body size. We also investigated body shape as a surrogate marker for fat deposition around the body. As obesity and excessive adiposity have been linked with increased risk for developing a number of different cancers, further investigation of self-reported body size and shape and their potential relationship with prostate cancer was considered to be appropriate. OBJECTIVE The study objective was to investigate whether underlying associations exist between prostate cancer risk and male self-reported body size and shape. METHODS Data were collected from a large case-control study of men (1928 cases and 2043 controls) using self-administered questionnaires. Data from self-reported pictograms of perceived body size relating to three decades of life (20's, 30's and 40's) were recorded and analysed, including the pattern of change. The associations of self-identified body shape with prostate cancer risk were also explored. RESULTS Self-reported body size for men in their 20's, 30's and 40's did not appear to be associated with prostate cancer risk. More than half of the subjects reported an increase in self-reported body size throughout these three decades of life. Furthermore, no association was observed between self-reported body size changes and prostate cancer risk. Using 'symmetrical' body shape as a reference group, subjects with an 'apple' shape showed a significant 27% reduction in risk (Odds ratio = 0.73, 95% C.I. 0.57-0.92). CONCLUSIONS Change in self-reported body size throughout early to mid-adulthood in males is not a significant risk factor for the development of prostate cancer. Body shape indicative of body fat distribution suggested that an 'apple' body shape was protective and inversely associated with prostate cancer risk when compared with 'symmetrical' shape. Further studies which investigate prostate cancer risk and possible relationships with genetic factors known to influence body shape may shed further light on any underlying associations.
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Lan N, Lu Y, Zhang Y, Pu S, Xi H, Nie X, Liu J, Yuan W. FTO - A Common Genetic Basis for Obesity and Cancer. Front Genet 2020; 11:559138. [PMID: 33304380 PMCID: PMC7701174 DOI: 10.3389/fgene.2020.559138] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 09/02/2020] [Indexed: 02/05/2023] Open
Abstract
In recent years, the prevalence of obesity and cancer have been rising. Since this poses a serious threat to human health, the relationship between the two has attracted much attention. This study examined whether fat mass and obesity-associated (FTO) genes are linked, taking into account a Genome-wide Association Study (GWAS) that revealed multiple single nucleotide polymorphism sites (SNPs) of the FTO gene, indicating an association between obesity and cancer in different populations. FTO proteins have been proved to participate in adipogenesis and tumorigenesis with post-transcriptional regulation of downstream molecular expression or through the target of the mammalian target protein rapamycin (mTOR). FTO inhibitors have also been found to share anti-obesity and anti-cancer effects in vivo. In this review, we comprehensively discuss the correlation between obesity and cancer by measuring FTO gene polymorphism, as well as the molecular mechanism involved in these diseases, emphasizing FTO as the common genetic basis of obesity and cancer.
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Affiliation(s)
- Ning Lan
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Membrane Science and Technology Research Institute Co., Ltd., Lanzhou, China
| | - Ying Lu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Membrane Science and Technology Research Institute Co., Ltd., Lanzhou, China
| | - Yigan Zhang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Membrane Science and Technology Research Institute Co., Ltd., Lanzhou, China
| | - Shuangshuang Pu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Huaze Xi
- The Second Hospital of Lanzhou University, Lanzhou, China
| | - Xin Nie
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Jing Liu
- Changjiang Scholar’s Laboratory/Guangdong Provincial Key Laboratory for Diagnosis and Treatment of Breast Cancer, Shantou University Medical College, Shantou, China
| | - Wenzhen Yuan
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Membrane Science and Technology Research Institute Co., Ltd., Lanzhou, China
- *Correspondence: Wenzhen Yuan,
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Lushin V, Katz C, Lalayants M. Relative importance of caregiver characteristics for future alcohol consumption in youth involved with child welfare system. Drug Alcohol Depend 2019; 204:107528. [PMID: 31542628 PMCID: PMC6910130 DOI: 10.1016/j.drugalcdep.2019.06.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/25/2019] [Accepted: 06/25/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Adolescents involved with child welfare system are disproportionately at risk for underage drinking. Little empirical evidence has informed interventions targeting child welfare caregivers to prevent alcohol consumption among adolescents involved with the system. METHODS The present study addressed this gap by examining modifiable caregiver characteristics most predictive of future underage drinking in a cohort of adolescents (N = 1205) in a nationally representative child welfare dataset. We used dominance analyses to examine direct contributions of each caregiver predictor to the overall variance of future alcohol use. This is the first study to apply the reputable Turrisi and Jaccard (2001) framework of familial processes affecting underage drinking to the child welfare population. RESULTS Findings highlight the role of caregiver-adolescent relational quality and communications for predicting underage alcohol use, and downplay the role of caregiver monitoring. CONCLUSIONS Child welfare service systems may help prevent underage drinking by systematically training and motivating caregivers to foster trusting, helping relationships and regular communications with the adolescents in their care.
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Affiliation(s)
- Victor Lushin
- University of Pennsylvania School of Medicine, Department of Psychiatry, Center for Mental Health, United States.
| | - Colleen Katz
- City University of New York, Hunter College Silberman School of Social Work
| | - Marina Lalayants
- City University of New York, Hunter College Silberman School of Social Work
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Zhou L, He W, Wang W, Zhou D. Altered circulating levels of adipokine omentin-1 in patients with prostate cancer. Onco Targets Ther 2019; 12:3313-3319. [PMID: 31118682 PMCID: PMC6503326 DOI: 10.2147/ott.s197507] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 03/30/2019] [Indexed: 12/20/2022] Open
Abstract
Background: Prostate cancer (PCa), one of the most common cancers in men, accounts for nearly 20% of adult malignant neoplasms. Omentin-1 is synthesized in visceral adipose tissue and its concentration in plasma changes with cancers. However, the association between omentin-1 and PCa was rarely studied. Thus, we investigated the plasma omentin-1 levels in PCa patients in Chinese population. Materials and methods: Ninety cases of PCa and 90 matched healthy controls were enrolled in this study. We used ELISA technique to determine the concentration of omentin-1. Results: The concentration of omentin-1 was higher in patients with PCa compared to controls (P<0.001). Additionally, positive correlations were uncovered between omentin-1 with body mass index (r=0.240, P=0.001), waist-hip ratio (r=0.228, P=0.002), and prostate-specific antigen (r=0.589, P<0.001). Receiver operating characteristic curve analysis indicated that plasma omentin-1 differentiated PCa patients from controls with a sensitivity of 85.9% and a specificity of 83.7%. Conclusion: Our study demonstrated that the levels of plasma omentin-1 were increased in PCa patients. Meanwhile, omentin-1 may be a possible biomarker for diagnosing PCa. For validation, more studies should focus on and elucidate the potential mechanism underlying this change.
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Affiliation(s)
- Lin Zhou
- Department of Medical Record and Statistics, Anhui No.2 Provincial People's Hospital, Hefei, Anhui, 230041, People's Republic of China
| | - Weiming He
- Department of Public Health, Guangdong Medical University, Zhanjiang, Guangdong 524023, People's Republic of China
| | - Wenjun Wang
- Department of Medical Record and Statistics, Anhui No.2 Provincial People's Hospital, Hefei, Anhui, 230041, People's Republic of China
| | - Daoping Zhou
- Department of Oncology, Anhui No.2 Provincial People's Hospital, Hefei, Anhui, 230041, People's Republic of China
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9
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Quagliariello V, Rossetti S, Cavaliere C, Di Palo R, Lamantia E, Castaldo L, Nocerino F, Ametrano G, Cappuccio F, Malzone G, Montanari M, Vanacore D, Romano FJ, Piscitelli R, Iovane G, Pepe MF, Berretta M, D'Aniello C, Perdonà S, Muto P, Botti G, Ciliberto G, Veneziani BM, De Falco F, Maiolino P, Caraglia M, Montella M, Iaffaioli RV, Facchini G. Metabolic syndrome, endocrine disruptors and prostate cancer associations: biochemical and pathophysiological evidences. Oncotarget 2018; 8:30606-30616. [PMID: 28389628 PMCID: PMC5444769 DOI: 10.18632/oncotarget.16725] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/06/2017] [Indexed: 01/18/2023] Open
Abstract
This review summarizes the main pathophysiological basis of the relationship between metabolic syndrome, endocrine disruptor exposure and prostate cancer that is the most common cancer among men in industrialized countries. Metabolic syndrome is a cluster of metabolic and hormonal factors having a central role in the initiation and recurrence of many western chronic diseases including hormonal-related cancers and it is considered as the worlds leading health problem in the coming years. Many biological factors correlate metabolic syndrome to prostate cancer and this review is aimed to focus, principally, on growth factors, cytokines, adipokines, central obesity, endocrine abnormalities and exposure to specific endocrine disruptors, a cluster of chemicals, to which we are daily exposed, with a hormone-like structure influencing oncogenes, tumor suppressors and proteins with a key role in metabolism, cell survival and chemo-resistance of prostate cancer cells. Finally, this review will analyze, from a molecular point of view, how specific foods could reduce the relative risk of incidence and recurrence of prostate cancer or inhibit the biological effects of endocrine disruptors on prostate cancer cells. On the basis of these considerations, prostate cancer remains a great health problem in terms of incidence and prevalence and interventional studies based on the treatment of metabolic syndrome in cancer patients, minimizing exposure to endocrine disruptors, could be a key point in the overall management of this disease.
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Affiliation(s)
- Vincenzo Quagliariello
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Division of Medical Oncology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy.,Medical Oncology, Abdominal Department, National Cancer Institute G. Pascale Foundation, Napoli, Italy.,Association for Multidisciplinary Studies in Oncology and Mediterranean Diet, Piazza Nicola Amore, Naples, Italy
| | - Sabrina Rossetti
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Division of Medical Oncology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy
| | - Carla Cavaliere
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Department of Onco-Ematology Medical Oncology, S.G. Moscati Hospital of Taranto, Taranto, Italy
| | - Rossella Di Palo
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Radiation Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Elvira Lamantia
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Pathology Unit, Istituto Nazionale Tumori "Fondazione G. Pascale"-IRCCS, Naples, Italy
| | - Luigi Castaldo
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Division of Urology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy
| | - Flavia Nocerino
- Epidemiology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Gianluca Ametrano
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Radiation Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Francesca Cappuccio
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Psicology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Gabriella Malzone
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Pathology Unit, Istituto Nazionale Tumori "Fondazione G. Pascale"-IRCCS, Naples, Italy
| | - Micaela Montanari
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Department of Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Naples, Italy
| | - Daniela Vanacore
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy
| | - Francesco Jacopo Romano
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy
| | - Raffaele Piscitelli
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Pharmacy Unit, Istituto Nazionale Tumori, Istituto Nazionale Tumori-Fondazione G. Pascale Naples, Italy
| | - Gelsomina Iovane
- Division of Medical Oncology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy
| | - Maria Filomena Pepe
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Pathology Unit, Istituto Nazionale Tumori "Fondazione G. Pascale"-IRCCS, Naples, Italy
| | - Massimiliano Berretta
- Department of Medical Oncology, CRO Aviano, National Cancer Institute, Aviano, Italy.,Association for Multidisciplinary Studies in Oncology and Mediterranean Diet, Piazza Nicola Amore, Naples, Italy
| | - Carmine D'Aniello
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Division of Medical Oncology, A.O.R.N. dei COLLI "Ospedali Monaldi-Cotugno-CTO", Napoli, Italy
| | - Sisto Perdonà
- Division of Urology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy
| | - Paolo Muto
- Radiation Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Gerardo Botti
- Pathology Unit, Istituto Nazionale Tumori "Fondazione G. Pascale"-IRCCS, Naples, Italy
| | - Gennaro Ciliberto
- Scientific Directorate, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Bianca Maria Veneziani
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Naples, Italy
| | - Francesco De Falco
- Psicology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Piera Maiolino
- Pharmacy Unit, Istituto Nazionale Tumori, Istituto Nazionale Tumori-Fondazione G. Pascale Naples, Italy
| | - Michele Caraglia
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Maurizio Montella
- Epidemiology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori 'Fondazione Giovanni Pascale' - IRCCS, Napoli, Italy
| | - Rosario Vincenzo Iaffaioli
- Medical Oncology, Abdominal Department, National Cancer Institute G. Pascale Foundation, Napoli, Italy.,Association for Multidisciplinary Studies in Oncology and Mediterranean Diet, Piazza Nicola Amore, Naples, Italy
| | - Gaetano Facchini
- Progetto ONCONET2.0 - Linea progettuale 14 per l'implementazione della prevenzione e diagnosi precoce del tumore alla prostata e testicolo - Regione Campania, Italy.,Division of Medical Oncology, Department of Uro-Gynaecological Oncology , Istituto Nazionale Tumori 'Fondazione G. Pascale' - IRCCS, Naples, Italy.,Association for Multidisciplinary Studies in Oncology and Mediterranean Diet, Piazza Nicola Amore, Naples, Italy
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10
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Superactive human leptin antagonist (SHLA), triple Lan1 and quadruple Lan2 leptin mutein as a promising treatment for human folliculoma. Cancer Chemother Pharmacol 2017; 80:815-827. [PMID: 28861689 PMCID: PMC5608790 DOI: 10.1007/s00280-017-3423-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 08/15/2017] [Indexed: 12/26/2022]
Abstract
PURPOSE There are no data showing a direct correlation between obesity and increased blood leptin levels with folliculoma. Moreover, folliculoma is not the best studied among other ovarian cancer types. We investigated whether oestradiol can modulate ObR expression in some oestrogen-responsive tissues and that leptin exerts its activity not only via the leptin receptor but also through cross talk with other signalling systems. We hypothesise that blocking ObR expression could be a novel treatment for gonadal ovarian cancer. METHODS We evaluated the effect of SHLA, Lan1 and Lan2 blockers on cell proliferation (BrdU incorporation assay), ObR and ERα/β gene expression (qPCR), oestradiol secretion (ELISA) and cell cycle protein expression (Western blot) in the non-cancerous cell line HGrC1 and two granulosa cancer cell lines: the juvenile form (COV434) and the adult form (KGN). RESULTS ObR gene expression in cancer cell lines was 50% higher than in the non-cancer cells. Lan-1 and Lan-2 decreased ObR expression in COV434, while it had no effect in KGN cells. Higher ERβ expression in non-cancer and higher ERα expression in both cancer cell lines was noted. SHLA and Lan-1 changed the ratio towards greater expression of ERβ, characteristic of non-cancer granulosa cells. All ObR antagonists in HCrC1 and KGN but only Lan-2 in COV434 reversed leptin-stimulated proliferation. In both non-cancer and cancer granulosa cells, leptin acts as a cyclinD/cdk4, cyclin A/cdk2 and E2F inhibitor. CONCLUSION These results indicate that SHLA and Lan2 are promising leptin receptor inhibitors that can eliminate the negative effects of leptin. These compounds should be considered in further ex vivo studies on the cancer microenvironment.
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11
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Leptin receptor signaling via Janus kinase 2/Signal transducer and activator of transcription 3 impacts on ovarian cancer cell phenotypes. Oncotarget 2017; 8:93530-93540. [PMID: 29212170 PMCID: PMC5706816 DOI: 10.18632/oncotarget.19873] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 07/11/2017] [Indexed: 12/12/2022] Open
Abstract
Ovarian cancer is a leading cause of cancer mortality in women world-wide. Considerable progress has been made to characterize the different subtypes of ovarian cancer, but specific therapies remain limited and prognosis poor. Cytokine signaling via the interleukin-6 receptor (IL-6R) family and related receptors has been implicated in a number of cancers, including those with an ovarian origin. The leptin receptor (LEPR) is structurally related to these receptors and utilizes similar downstream pathways. LEPR has diverse roles in metabolism, appetite and bone formation with obesity linked to both elevated levels of leptin and increased cancer incidence. This study investigated a potential role for LEPR signaling in ovarian cancer. Leptin stimulation led to increased proliferation, survival and migration of LEPR-expressing ovarian cancer cell lines, with the effects shown to be mediated by the downstream Janus kinase 2/Signal transducer and activator of transcription 3 (JAK2/STAT3) pathway. A significant correlation was identified between high co-expression of leptin and LEPR and decreased patient survival. This study collectively suggests that leptin/LEPR signaling via JAK2/STAT3 has the potential to significantly impact on pathogenesis in a subset of ovarian cancer patients who may benefit from strategies that dampen this pathway.
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12
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Harrison S, Lennon R, Holly J, Higgins JPT, Gardner M, Perks C, Gaunt T, Tan V, Borwick C, Emmet P, Jeffreys M, Northstone K, Rinaldi S, Thomas S, Turner SD, Pease A, Vilenchick V, Martin RM, Lewis SJ. Does milk intake promote prostate cancer initiation or progression via effects on insulin-like growth factors (IGFs)? A systematic review and meta-analysis. Cancer Causes Control 2017; 28:497-528. [PMID: 28361446 PMCID: PMC5400803 DOI: 10.1007/s10552-017-0883-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 03/10/2017] [Indexed: 01/03/2023]
Abstract
PURPOSE To establish whether the association between milk intake and prostate cancer operates via the insulin-like growth factor (IGF) pathway (including IGF-I, IGF-II, IGFBP-1, IGFBP-2, and IGFBP-3). METHODS Systematic review, collating data from all relevant studies examining associations of milk with IGF, and those examining associations of IGF with prostate cancer risk and progression. Data were extracted from experimental and observational studies conducted in either humans or animals, and analyzed using meta-analysis where possible, with summary data presented otherwise. RESULTS One hundred and seventy-two studies met the inclusion criteria: 31 examining the milk-IGF relationship; 132 examining the IGF-prostate cancer relationship in humans; and 10 animal studies examining the IGF-prostate cancer relationship. There was moderate evidence that circulating IGF-I and IGFBP-3 increase with milk (and dairy protein) intake (an estimated standardized effect size of 0.10 SD increase in IGF-I and 0.05 SD in IGFBP-3 per 1 SD increase in milk intake). There was moderate evidence that prostate cancer risk increased with IGF-I (Random effects meta-analysis OR per SD increase in IGF-I 1.09; 95% CI 1.03, 1.16; n = 51 studies) and decreased with IGFBP-3 (OR 0.90; 0.83, 0.98; n = 39 studies), but not with other growth factors. The IGFBP-3 -202A/C single nucleotide polymorphism was positively associated with prostate cancer (pooled OR for A/C vs. AA = 1.22; 95% CI 0.84, 1.79; OR for C/C vs. AA = 1.51; 1.03, 2.21, n = 8 studies). No strong associations were observed for IGF-II, IGFBP-1 or IGFBP-2 with either milk intake or prostate cancer risk. There was little consistency within the data extracted from the small number of animal studies. There was additional evidence to suggest that the suppression of IGF-II can reduce tumor size, and contradictory evidence with regards to the effect of IGFBP-3 suppression on tumor progression. CONCLUSION IGF-I is a potential mechanism underlying the observed associations between milk intake and prostate cancer risk.
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Affiliation(s)
- Sean Harrison
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK
| | - Rosie Lennon
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Jeff Holly
- IGFs & Metabolic Endocrinology Group, School of Clinical Sciences at North Bristol, Southmead Hospital, BS10 5NB, Bristol, UK
| | - Julian P T Higgins
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK
| | - Mike Gardner
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Claire Perks
- IGFs & Metabolic Endocrinology Group, School of Clinical Sciences at North Bristol, Southmead Hospital, BS10 5NB, Bristol, UK
| | - Tom Gaunt
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK
| | - Vanessa Tan
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK
| | - Cath Borwick
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- Cardiff University, Cardiff, UK
| | - Pauline Emmet
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Mona Jeffreys
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | | | - Sabina Rinaldi
- International Agency for Research on Cancer, Lyon, France
| | - Stephen Thomas
- School of Oral and Dental Sciences,, University of Bristol, Bristol, UK
| | | | - Anna Pease
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Vicky Vilenchick
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Richard M Martin
- School of Social and Community Medicine, University of Bristol, Bristol, UK
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK
- National Institute for Health Research Biomedical Research Unit in Nutrition, Diet and Lifestyle, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, BS2 8AE, Bristol, UK
| | - Sarah J Lewis
- School of Social and Community Medicine, University of Bristol, Bristol, UK.
- MRC Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK.
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13
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Tumour biology of obesity-related cancers: understanding the molecular concept for better diagnosis and treatment. Tumour Biol 2016; 37:14363-14380. [PMID: 27623943 DOI: 10.1007/s13277-016-5357-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/07/2016] [Indexed: 12/18/2022] Open
Abstract
Obesity continues to be a major global problem. Various cancers are related to obesity and proper understanding of their aetiology, especially their molecular tumour biology is important for early diagnosis and better treatment. Genes play an important role in the development of obesity. Few genes such as leptin, leptin receptor encoded by the db (diabetes), pro-opiomelanocortin, AgRP and NPY and melanocortin-4 receptors and insulin-induced gene 2 were linked to obesity. MicroRNAs control gene expression via mRNA degradation and protein translation inhibition and influence cell differentiation, cell growth and cell death. Overexpression of miR-143 inhibits tumour growth by suppressing B cell lymphoma 2, extracellular signal-regulated kinase-5 activities and KRAS oncogene. Cancers of the breast, uterus, renal, thyroid and liver are also related to obesity. Any disturbance in the production of sex hormones and insulin, leads to distortion in the balance between cell proliferation, differentiation and apoptosis. The possible mechanism linking obesity to cancer involves alteration in the level of adipokines and sex hormones. These mediators act as biomarkers for cancer progression and act as targets for cancer therapy and prevention. Interestingly, many anti-cancerous drugs are also beneficial in treating obesity and vice versa. We also reviewed the possible link in the mechanism of few drugs which act both on cancer and obesity. The present review may be important for molecular biologists, oncologists and clinicians treating cancers and also pave the way for better therapeutic options.
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14
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Wulaningsih W, Holmberg L, Ng T, Rohrmann S, Van Hemelrijck M. Serum leptin, C-reactive protein, and cancer mortality in the NHANES III. Cancer Med 2015; 5:120-8. [PMID: 26632325 PMCID: PMC4708908 DOI: 10.1002/cam4.570] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/20/2015] [Accepted: 09/29/2015] [Indexed: 01/05/2023] Open
Abstract
Adipokines, such as leptin, may affect cancer through its link with inflammation and obesity. We investigated the association between leptin, C‐reactive protein, and risk of cancer death while accounting general and abdominal obesity. From the Third National Health and Examination Survey (NHANES III), we selected 5957 adult men and women with baseline measurements of serum leptin and CRP. Multivariable Cox regression was used to assess leptin and CRP levels (low, moderate, high) in relation to risk of cancer death. Stratification analyses were performed for obesity as defined by body mass index (BMI) and waist circumference. Fine and Gray regression was performed to account for death from cardiovascular disease and other causes as competing events. A total of 385 participants died of cancer during a mean follow‐up of 18 years. After adjusting for BMI and waist circumference, an inverse association with log‐transformed leptin was found for women, with a hazard ratio (HR) of 0.81 (95% confidence interval [CI]: 0.51–1.30) and 0.40 (95% CI: 0.24–0.68) for moderate and high compared to low levels of leptin, respectively; Ptrend = 0.0007). No association for leptin was observed in men, but higher CRP corresponded to increased risk of dying from cancer (HR: 2.98; 95% CI: 1.57–5.64 for the highest vs. lowest categories of CRP). Similar associations were observed with competing risk analysis also adjusted for BMI and waist circumference. Contrasting associations of serum leptin and CRP with cancer mortality may indicate sex‐specific biological or environmental pathways linking obesity and cancer in men and women which warrant mechanistic investigations.
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Affiliation(s)
- Wahyu Wulaningsih
- Cancer Epidemiology Group, Division of Cancer Studies, School of Medicine, King's College London, London, United Kingdom
| | - Lars Holmberg
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.,Regional Cancer Centre, Uppsala University, Uppsala, Sweden
| | - Tony Ng
- Randall Division and Division of Cancer Studies, Richard Dimbleby Department of Cancer Research, School of Medicine, King's College London, London, United Kingdom
| | - Sabine Rohrmann
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Mieke Van Hemelrijck
- Cancer Epidemiology Group, Division of Cancer Studies, School of Medicine, King's College London, London, United Kingdom
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15
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Abstract
The global epidemic of obesity is closely linked to the development of serious co-morbidities, including many forms of cancer. Epidemiological evidence consistently shows that obesity is associated with a similar or mildly increased incidence of prostate cancer but, more prominently, an increased risk for aggressive prostate cancer and prostate cancer-specific mortality. Studies in mice demonstrate that obesity induced by high-fat feeding increases prostate cancer progression; however, the mechanisms underpinning this relationship remain incompletely understood. Adipose tissue expansion in obesity leads to local tissue dysfunction and is associated with low-grade inflammation, alterations in endocrine function and changes in lipolysis that result in increased delivery of fatty acids to tissues of the body. The human prostate gland is covered anteriorly by the prominent peri-prostatic adipose tissue and laterally by smaller adipose tissue depots that lie directly adjacent to the prostatic surface. We discuss how the close association between dysfunctional adipose tissue and prostate epithelial cells might result in bi-directional communication to cause increased prostate cancer aggressiveness and progression. However, the literature indicates that several 'mainstream' hypotheses regarding obesity-related drivers of prostate cancer progression are not yet supported by a solid evidence base and, in particular, are not supported by experiments using human tissue. Understanding the links between obesity and prostate cancer will have major implications for the health policy for men with prostate cancer and the development of new therapeutic or preventative strategies.
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Affiliation(s)
- Renea A Taylor
- Department of PhysiologyCancer Program and Obesity and Metabolic Disease Program, Biomedicine Discovery Institute, Monash University, Wellington Road, Victoria 3800, Australia
| | - Jennifer Lo
- Department of PhysiologyCancer Program and Obesity and Metabolic Disease Program, Biomedicine Discovery Institute, Monash University, Wellington Road, Victoria 3800, Australia
| | - Natasha Ascui
- Department of PhysiologyCancer Program and Obesity and Metabolic Disease Program, Biomedicine Discovery Institute, Monash University, Wellington Road, Victoria 3800, Australia
| | - Matthew J Watt
- Department of PhysiologyCancer Program and Obesity and Metabolic Disease Program, Biomedicine Discovery Institute, Monash University, Wellington Road, Victoria 3800, Australia
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16
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Parikesit D, Mochtar CA, Umbas R, Hamid ARAH. The impact of obesity towards prostate diseases. Prostate Int 2015; 4:1-6. [PMID: 27014656 PMCID: PMC4789344 DOI: 10.1016/j.prnil.2015.08.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 08/13/2015] [Indexed: 12/21/2022] Open
Abstract
Evidence has supported obesity as a risk factor for both benign prostate hyperplasia (BPH) and prostate cancer (PCa). Obesity causes several mechanisms including increased intra-abdominal pressure, altered endocrine status, increased sympathetic nervous activity, increased inflammation process, and oxidative stress, all of which are favorable in the development of BPH. In PCa, there are several different mechanisms, such as decreased serum testosterone, peripheral aromatization of androgens, insulin resistance, and altered adipokine secretion caused by inflammation, which may precipitate the development of and even cause high-grade PCa. The role of obesity in prostatitis still remains unclear. A greater understanding of the pathogenesis of prostate disease and adiposity could allow the development of new therapeutic markers, prognostic indicators, and drug targets. This review was made to help better understanding of the association between central obesity and prostate diseases, such as prostatitis, BPH, and PCa.
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Affiliation(s)
- Dyandra Parikesit
- Department of Urology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Chaidir Arief Mochtar
- Department of Urology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Rainy Umbas
- Department of Urology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia
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17
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Wekesa A, Harrison M, Watson RW. Physical activity and its mechanistic effects on prostate cancer. Prostate Cancer Prostatic Dis 2015; 18:197-207. [PMID: 25800589 DOI: 10.1038/pcan.2015.9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 02/04/2015] [Accepted: 02/06/2015] [Indexed: 12/22/2022]
Abstract
Beneficial effects of physical activity have been illustrated in numerous aspects of health. With the increasing incidence of prostate cancer and changes in physical activity of men, understanding the link between the two has important implications for changing this cancer burden. Both positive and negative associations between physical activity and prostate cancer have been previously demonstrated in observational epidemiological studies. Elucidating the biological mechanisms would lead to a better understanding of how physical activity influences the progression of prostate cancer. This review was undertaken to: (1) identify evidence in literature that demonstrates the effects of physical activity on skeletal muscle secretomes, (2) indicate the plausible signaling pathways these proteins might activate, and (3) identify evidence in literature that demonstrates the roles of the signaling pathways in prostate cancer progression and regression. We also discuss proposed biological mechanisms and signaling pathways by which physical activity may prevent the development and progression of prostate cancer. We discuss proteins involved in the normal and aberrant growth and development of the prostate gland that may be affected by physical activity. We further identify future directions for research, including a better understanding of the biological mechanisms, the need to standardize physical activity and identify mechanistic end points of physical activity that can then be correlated with outcomes.
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Affiliation(s)
- A Wekesa
- UCD School of Medicine and Medical Science, UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - M Harrison
- Department of Health, Sport and Exercise Science, Waterford Institute of Technology, Waterford, Ireland
| | - R W Watson
- UCD School of Medicine and Medical Science, UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
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18
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Lai GY, Giovannucci EL, Pollak MN, Peskoe SB, Stampfer MJ, Willett WC, Platz EA. Association of C-peptide and leptin with prostate cancer incidence in the Health Professionals Follow-up Study. Cancer Causes Control 2014; 25:625-32. [PMID: 24664287 DOI: 10.1007/s10552-014-0369-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 03/15/2014] [Indexed: 01/19/2023]
Abstract
PURPOSE Hyperinsulinemia is hypothesized to influence prostate cancer risk. Thus, we evaluated the association of circulating C-peptide, which is a marker of insulin secretion, and leptin, which is secreted in response to insulin and influences insulin sensitivity, with prostate cancer risk. METHODS We identified prostate cancer cases (n = 1,314) diagnosed a mean of 5.4 years after blood draw and matched controls (n = 1,314) in the Health Professionals Follow-up Study. Plasma C-peptide and leptin concentrations were measured by ELISA. Odds ratios (ORs) and 95 % confidence intervals (CI) were estimated taking into account the matching factors age and history of a PSA test before blood draw and further adjusting for body mass index, diabetes, and other factors. RESULTS Neither C-peptide (quartile [Q]4 vs. Q1: OR 1.05, 95 % CI 0.82-1.34, p-trend = 0.95) nor leptin (Q4 vs. Q1: OR 0.85, 95 % CI 0.65-1.12, p-trend = 0.14) was associated with prostate cancer risk. Further, neither was associated with risk of advanced or lethal disease (n = 156 cases; C-peptide: Q4 vs. Q1, OR 1.18, 95 % CI 0.69-2.03, p-trend = 0.78; leptin: Q4 vs. Q1, OR 0.74, 95 % CI 0.41-1.36, p-trend = 0.34). CONCLUSIONS In this large prospective study, circulating C-peptide and leptin concentrations were not clearly associated with risk of prostate cancer overall or aggressive disease. Well into the PSA era, our findings do not appear to be supportive of the hypothesis that hyperinsulinemia influences risk of total or aggressive prostate cancer.
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Affiliation(s)
- Gabriel Y Lai
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Rm E6132, 615 N. Wolfe Street, Baltimore, MD, 21205, USA
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19
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Golabek T, Bukowczan J, Chłosta P, Powroźnik J, Dobruch J, Borówka A. Obesity and prostate cancer incidence and mortality: a systematic review of prospective cohort studies. Urol Int 2013; 92:7-14. [PMID: 23942223 DOI: 10.1159/000351325] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/13/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND There has been a large body of research on obesity and the risk of prostate cancer (PCa) that has been published recently. However, the epidemiological evidence for such an association has not been consistent. This may be attributed to the nature of case-control and retrospective studies, which generally are more prone to biases. Therefore, we conducted a systematic review of prospective cohort studies to assess the association between obesity and the risk of PCa incidence and death. METHODS A search of the PubMed database and references of published studies (from inception until March 2013) was conducted. Twenty-three eligible studies were identified and included in the systematic review. RESULTS The evidence from the prospective cohort studies linking obesity with PCa incidence has not been consistent. However, cumulative data is compelling for a strong positive association between obesity and fatal PCa. CONCLUSIONS Obesity is a significant diet-related risk factor for fatal PCa. Further well-constructed, large cohort studies on the potential association between obesity and PCa, as well as on underlying mechanisms, are needed.
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Affiliation(s)
- Tomasz Golabek
- 1st Department of Urology, Postgraduate Medical Education Centre, European Health Centre, Otwock, Poland
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20
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Kim EY, Chin HM, Park SM, Jeon HM, Chung WC, Paik CN, Jun KH. Susceptibility of gastric cancer according to leptin and leptin receptor gene polymorphisms in Korea. JOURNAL OF THE KOREAN SURGICAL SOCIETY 2012; 83:7-13. [PMID: 22792528 PMCID: PMC3392320 DOI: 10.4174/jkss.2012.83.1.7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 05/07/2012] [Accepted: 05/16/2012] [Indexed: 11/30/2022]
Abstract
Purpose Leptin plays an important role in the control of body weight and also has a growth-factor-like function in epithelial cells. Abnormal expression of leptin and leptin receptor may be associated with cancer development and progression. We evaluated the relationship among leptin and leptin receptors polymorphisms, body mass index (BMI), serum leptin concentrations, and clinicopathologic features with gastric cancer and determined whether they could be the risk factor of gastric cancer. Methods We measured the serum leptin concentrations of 48 Korean patients with gastric cancer and 48 age- and sex-matched controls. By polymerase chain reaction-restriction fragment length polymorphism, we investigated one leptin gene promoter G-2548A genotype and four leptin receptor gene polymorphisms at codons 223, 109, 343, and 656. Results There was no significant difference between the mean leptin concentrations of the patient and control groups, while BMI was significantly lower in gastric cancer cases (22.9 ± 3.6 vs. 24.5 ± 2.8 kg/m2, P = 0.021). There was significant association between the LEPR Lys109Arg genotype and gastric cancer risk, heterozygotes for GA genotype had been proved to increased the risk of gastric cancer, and its corresponding odds ratio was 2.926 (95% confidence interval, 1.248 to 6.861). Conclusion Our results suggested that LEPR gene Lys109Arg polymorphism is associated with gastric cancer in Korean patients.
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Affiliation(s)
- Eun-Young Kim
- Department of Surgery, St. Vincent's Hospital, The Catholic University of Korea School of Medicine, Suwon, Korea
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The adipocyte-derived hormone leptin has proliferative actions on androgen-resistant prostate cancer cells linking obesity to advanced stages of prostate cancer. JOURNAL OF ONCOLOGY 2012; 2012:280386. [PMID: 22690216 PMCID: PMC3368429 DOI: 10.1155/2012/280386] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Revised: 02/22/2012] [Accepted: 03/29/2012] [Indexed: 12/18/2022]
Abstract
Background. Because obesity may be a risk factor for prostate cancer, we investigated proliferative effects of adipocytes-derived hormone leptin on human prostate cancer cells and assessed the role of mitogen-activated protein kinase (MAPK) signaling pathway in mediating these actions. Material and Methods. Three human prostate cancer cell lines were treated with increasing doses of recombinant leptin. Cell growth was measured under serum-free conditions using a spectrophotometric assay. Further, Western blotting was applied to detect the phosphorylation of an ERK1/2, and a specific inhibitor of MAPK (PD98059; 40 μM) was used. Results. In both androgen-resistant cell lines DU145 and PC-3, cell growth was dose-dependently increased by leptin after 24 hrs and 48 hrs of incubation, whereas leptin's proliferative effects on androgen-sensitive cell line LNCaP was less pronounced. Further, leptin caused dose-dependent ERK1/2 phosphorylation in both androgen-resistant cell lines, and pretreatment of these cells with PD98059 inhibited these responses. Conclusions. Leptin may be a potential link between obesity and risk of progression of prostate cancer. Thus, studies on leptin and obesity association to prostate cancer should differentiate patients according to androgen sensitivity.
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Gray A, Aronson WJ, Barnard RJ, Mehta H, Wan J, Said J, Cohen P, Galet C. Global Igfbp1 deletion does not affect prostate cancer development in a c-Myc transgenic mouse model. J Endocrinol 2011; 211:297-304. [PMID: 21903863 PMCID: PMC3271951 DOI: 10.1530/joe-11-0240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Circulating insulin-like growth factor binding protein 1 (IGFBP1) levels vary in response to nutritional status, and pre-clinical studies suggest that elevated IGFBP1 may be protective against the development and progression of prostate cancer. We hypothesized that global deletion of Igfbp1 would accelerate the development of prostate cancer in a c-Myc transgenic mouse model. To test our hypothesis, c-Myc transgenic mice (Myc/BP-1 wild-type (WT)) were crossed and interbred with the Igfbp1 knockout mice (Myc/BP-1 KO). The animals were placed on a high-protein diet at weaning, weighed every 2 weeks, and euthanized at 16 weeks of age. Prostate histopathology was assessed and proliferation status was determined by Ki-67 and proliferating cell nuclear antigen analyses. IGF-related serum biomarkers and body composition were measured. No significant difference in the incidence of prostate cancer was observed between the Myc/BP-1 KO and the Myc/BP-1 WT mice (65 and 80% respectively, P=0.48). Proliferation was significantly decreased by 71% in prostate tissue of Myc/BP-1 KO mice compared with Myc/BP-1 WT mice. Myc/BP-1 KO mice exhibited a significant 6.7% increase in body weight relative to the Myc/BP-1 WT mice that was attributed to an increase in fat mass. Fasting insulin levels were higher in the Myc/BP-1 KO mice without any difference between the groups in fasting glucose concentrations. Thus, contrary to our hypothesis, global deletion of Igfbp1 in a c-Myc transgenic mouse model did not accelerate the development of prostate cancer. Global Igfbp1 deletion did result in a significant increase in body weight and body fat mass. Further studies are required to understand the underlying mechanisms for these metabolic effects.
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Affiliation(s)
- Ashley Gray
- Department of Integrative Biology and Physiology, University of California at Los Angeles, Los Angeles, California, USA
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Abstract
The increasing incidence of obesity and its co-morbid conditions poses a great challenge to global health. In addition to cardiovascular disease and diabetes, epidemiological data demonstrate a link between obesity and multiple types of cancer. The molecular mechanisms underlying how obesity causes an increased risk of cancer are poorly understood. Obesity disrupts the dynamic role of the adipocyte in energy homeostasis, resulting in inflammation and alteration of adipokine (for example, leptin and adiponectin) signalling. Additionally, obesity causes secondary changes that are related to insulin signalling and lipid deregulation that may also foster cancer development. Understanding these molecular links may provide an avenue for preventive and therapeutic strategies to reduce cancer risk and mortality in an increasingly obese population.
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Affiliation(s)
- Melin J Khandekar
- Dana-Farber Cancer Institute and Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
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Abstract
The metabolic syndrome is common in countries with Western lifestyles. It comprises a number of disorders-including insulin resistance, hypertension and obesity-that all act as risk factors for cardiovascular diseases. Urological diseases have also been linked to the metabolic syndrome. Most established aspects of the metabolic syndrome are linked to benign prostatic hyperplasia (BPH) and prostate cancer. Fasting plasma insulin, in particular, has been linked to BPH and incident, aggressive and lethal prostate cancer. The metabolic syndrome has also been shown to be associated with nonprostatic urological conditions such as male hypogonadism, nephrolithiasis, overactive bladder and erectile dysfunction, although data on these conditions are still sparse. Overall, the results of studies on urological aspects of the metabolic syndrome seem to indicate that BPH and prostate cancer could be regarded as two new aspects of the metabolic syndrome, and that an increased insulin level is a common underlying aberration that promotes both BPH and clinical prostate cancer. Urologists need to be aware of the effect that the metabolic syndrome has on urological disorders and should transfer this knowledge to their patients.
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Abstract
The controversies surrounding testosterone replacement therapy (TRT) have been addressed in the past few years. Although the androgenic effects of TRT on normal and malignant prostate cells have been studied for over 70 years, little clinical prospective research exists on the physiological responses of prostate tissues to a wide range of serum testosterone levels. The prostate is both an androgen-dependent and an androgen-sensitive organ; active processes are triggered at a 'threshold' or 'saturation' level of testosterone. Despite decades of research, no compelling evidence exists that increasing testosterone beyond this threshold level has a causative role in prostate cancer, or indeed changes the biology of the prostate. Testosterone deficiency has marked physiological and clinical effects on men in middle age and beyond. With subnormal testosterone levels, the potential positive benefits of TRT on factors such as muscle mass, libido or erectile function are likely a dose-response phenomenon, and should be considered differently than the threshold influence on the prostate. This Review will re-examine classic androgen research and reflect on whether testosterone actually stimulates prostatic cellular growth and progression in a 'threshold' or a 'dose-response' (or both) manner, as well as discuss the influence of testosterone on prostate cells in the hypogonadal and eugonadal states.
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26
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Leptin increases prostate cancer aggressiveness. J Physiol Biochem 2011; 67:531-8. [PMID: 21559935 DOI: 10.1007/s13105-011-0098-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 04/19/2011] [Indexed: 10/18/2022]
Abstract
Recent studies indicate that adipose tissue and adipocytokines might affect the development of prostate cancer (PCa). Leptin would have a stimulating effect on prostate cancer cells by inducing promotion and progression, whereas adiponectin would have a protective effect. The aim of this study was to determine the relation between body composition, leptin, and adiponectin levels with the prevalence and aggressiveness of PCa in men of Mendoza, Argentina. Seventy volunteers between 50 and 80 years (35 healthy men as control group and 35 with PCa) were selected. The PCa group was subclassified according to the Gleason Score (GS). Digital rectal examination, transrectal ultrasound, and prostatic biopsy were performed; PSA, testosterone, leptin, and adiponectin levels were determined; and a nutritional interview including anthropometric measurements and a food frequency questionnaire was carried out. Statistical analysis was performed by Student t test, ANOVA I, and Bonferroni (p < 0.05). Body mass index and percentage of body fat mass were not statistically different between PCa and control groups. However, body fat mass was higher in subjects with more aggressive tumors (p = 0.032). No differences were observed regarding leptin levels between the groups. Nevertheless, leptin levels were higher in subjects with high GS (p < 0.001). Adiponectin levels showed no statistical differences regarding the presence and aggressiveness of the tumor (p = 0.131). Finally, consumption and nutrient intake did not differ in the studied groups. In conclusion, body composition and leptin are related to the PCa aggressiveness but not with its prevalence.
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Lai G, Rohrmann S, Agurs-Collins T, Sutcliffe CG, Bradwin G, Rifai N, Bienstock J, Platz EA. Racial variation in umbilical cord blood leptin concentration in male babies. Cancer Epidemiol Biomarkers Prev 2011; 20:665-71. [PMID: 21307303 PMCID: PMC3070060 DOI: 10.1158/1055-9965.epi-10-0283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND We hypothesize that racial differences in utero contribute to the racial disparity in prostate cancer risk. Leptin is a candidate for evaluating this hypothesis because it influences fetal development and newborn growth. METHODS We measured leptin concentration by ELISA in venous cord blood collected from 70 African-American and 37 white male full-term babies. We measured sex steroid hormones and insulin-like growth factor (IGF) axis concentrations previously. Separately by race, we calculated the geometric mean leptin concentration and estimated the geometric mean adjusted for birth and placental weights, mother's age and parity, time of day and season of birth, and sex steroid hormone and IGF axis concentrations by linear regression. RESULTS Leptin was positively correlated with birth (r = 0.34) and placental (r = 0.25) weights, IGF-1 (r = 0.21), and IGF binding protein-3 (r = 0.29) adjusting for race. Unadjusted geometric mean leptin did not differ (P = 0.92) between African Americans (5,280 pg/mL; 95% CI: 4,322-6,451) and whites (5,187 pg/mL; 95% CI: 3,938-6,832). Adjusted geometric mean leptin was nonstatistically significantly higher (P = 0.15) in African Americans (5,954 pg/mL; 95% CI: 4,725-7,502) than in whites (4,133 pg/mL; 95% CI: 2,890-5,910). CONCLUSION We observed a nonsignificantly higher adjusted cord blood leptin concentration in African-American male babies than in white male babies, although unadjusted levels were similar. IMPACT These findings do not support the hypothesis that leptin level in utero contributes to the racial disparity in prostate cancer risk in adulthood.
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Affiliation(s)
- Gabriel Lai
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Sabine Rohrmann
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Tanya Agurs-Collins
- Division of Cancer Control and Population Sciences, National Cancer Institute, Rockville, MD
| | - Catherine G. Sutcliffe
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Gary Bradwin
- Department of Laboratory Medicine, Harvard Medical School and Children’s Hospital, Boston, MA
| | - Nader Rifai
- Department of Laboratory Medicine, Harvard Medical School and Children’s Hospital, Boston, MA
| | - Jessica Bienstock
- Departments of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Elizabeth A. Platz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD
- James Buchanan Brady Urological Institute, Johns Hopkins Medical Institutions, Baltimore, MD
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Lai GY, Helzlsouer KJ, Clipp SL, Rifai N, Platz EA. Association between C-peptide concentration and prostate cancer incidence in the CLUE II cohort study. Cancer Prev Res (Phila) 2010; 3:1334-41. [PMID: 20858760 DOI: 10.1158/1940-6207.capr-10-0053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Diabetes, characterized by perturbations in insulin production and signaling, is inversely associated with prostate cancer risk irrespective of stage. Obesity, a diabetes risk factor, is inversely associated with localized disease but positively associated with advanced disease. To understand the complex association between hyperinsulinemia and prostate cancer, we evaluated the association of plasma C-peptide, an insulin secretion marker, with prostate cancer risk in a case-control study nested in a prospective community cohort. Prostate cancer cases (n = 264) and matched controls (n = 264) were identified in the CLUE II cohort between 1989 (baseline) and 2002. C-peptide concentration was measured in baseline plasma by ELISA. Odds ratios (OR) and 95% confidence intervals (95% CI) were estimated using conditional logistic regression, adjusting for being overweight or obese and family history. Median C-peptide concentration was lower in cases (1,180 pmol/L) than in controls (1,365 pmol/L; P = 0.03). Men in the highest (versus lowest) fourth of C-peptide had a lower risk for prostate cancer (OR, 0.65; 95% CI, 0.37-1.14; P-trend = 0.08), primarily localized disease (OR, 0.44; 95% CI, 0.19-1.03; P-trend = 0.04). Associations were similar to overall, when excluding cases diagnosed during the first 5 years of follow-up, men with diabetes, or men who had not had a prostate-specific antigen test. C-peptide concentration was inversely associated with subsequent diagnosis of prostate cancer, primarily localized disease, similar to the association for obesity. However, we cannot rule out detection bias that might result if men with higher C-peptide have lower prostate-specific antigen irrespective of whether prostate cancer is present or not.
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Affiliation(s)
- Gabriel Y Lai
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
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Ellerhorst JA, Diwan AH, Dang SM, Uffort DG, Johnson MK, Cooke CP, Grimm EA. Promotion of melanoma growth by the metabolic hormone leptin. Oncol Rep 2010; 23:901-7. [PMID: 20204272 DOI: 10.3892/or_00000713] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We have previously shown that melanoma cells proliferate in response to the metabolic hormones TRH and TSH. The objective of the present study was to test the hypothesis that a third metabolic hormone, leptin, serves as a growth factor for melanoma. Using western blotting, indirect immunofluorescence, and RT-PCR, leptin receptors were found to be expressed by human melanoma cells. In contrast, cultured melanocytes expressed message for the receptor without detectable protein. Melanoma cells responded to treatment with leptin by activating the MAPK pathway and proliferating. Melanoma cells but not melanocytes, also expressed leptin protein, creating a potential autocrine loop. Examination of human melanoma tumors by immunohistochemistry revealed that melanomas and nevi expressed leptin at a high frequency. Melanomas also strongly expressed the leptin receptor, whereas nevi expressed this receptor to a much lesser degree. We conclude that leptin is a melanoma growth factor and that a leptin autocrine-loop may contribute to the uncontrolled proliferation of these cells.
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Affiliation(s)
- Julie A Ellerhorst
- Department of Experimental Therapeutics, Unit 362, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Neuhouser ML, Till C, Kristal A, Goodman P, Hoque A, Platz EA, Hsing AW, Albanes D, Parnes HL, Pollak M. Finasteride modifies the relation between serum C-peptide and prostate cancer risk: results from the Prostate Cancer Prevention Trial. Cancer Prev Res (Phila) 2010; 3:279-89. [PMID: 20179296 PMCID: PMC3846551 DOI: 10.1158/1940-6207.capr-09-0188] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Hyperinsulinemia and obesity-related metabolic disturbances are common and have been associated with increased cancer risk and poor prognosis. To investigate this issue in relation to prostate cancer, we conducted a nested case-control study within the Prostate Cancer Prevention Trial (PCPT), a randomized, placebo-controlled trial testing finasteride versus placebo for primary prevention of prostate cancer. Cases (n = 1,803) and controls (n = 1,797) were matched on age, PCPT treatment arm, and family history of prostate cancer; controls included all eligible non-whites. Baseline bloods were assayed for serum C-peptide (marker of insulin secretion) and leptin (an adipokine) using ELISA. All outcomes were biopsy determined. Logistic regression calculated odds ratios (OR) for total prostate cancer and polytomous logistic regression calculated ORs for low-grade (Gleason <7) and high-grade (Gleason >7) disease. Results were stratified by PCPT treatment arm for C-peptide. For men on placebo, higher versus lower serum C-peptide was associated with a nearly 2-fold increased risk of high-grade prostate cancer (Gleason >7; multivariate-adjusted OR, 1.88; 95% confidence interval, 1.19-2.97; P(trend) = 0.004). When C-peptide was modeled as a continuous variable, every unit increase in log(C-peptide) resulted in a 39% increased risk of high-grade disease (P = 0.01). In contrast, there was no significant relationship between C-peptide and high-grade prostate cancer among men receiving finasteride. Leptin was not independently associated with high-grade prostate cancer. In conclusion, these results support findings from other observational studies that high serum C-peptide and insulin resistance, but not leptin, are associated with increased risk of high-grade prostate cancer. Our novel finding is that the C-peptide-associated risk was attenuated by use of finasteride.
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Affiliation(s)
- Marian L Neuhouser
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109-1024, USA.
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Abstract
Experimental, epidemiological and clinical evidence implicates insulin resistance and its accompanying hyperinsulinaemia in the development of cancer, but the relative importance of these disturbances in cancer remains unclear. There are, however, theoretical mechanisms by which hyperinsulinaemia could amplify such growth-promoting effects as insulin may have, as well as the growth-promoting effects of other, more potent, growth factors. Hyperinsulinaemia may also induce other changes, particularly in the IGF (insulin-like growth factor) system, that could promote cell proliferation and survival. Several factors can independently modify both cancer risk and insulin resistance, including subclinical inflammation and obesity. The possibility that some of the effects of hyperinsulinaemia might then augment pro-carcinogenic changes associated with disturbances in these factors emphasizes how, rather than being a single causative factor, insulin resistance may be most usefully viewed as one strand in a network of interacting disturbances that promote the development and progression of cancer.
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Li H, Stampfer MJ, Mucci L, Rifai N, Qiu W, Kurth T, Ma J. A 25-year prospective study of plasma adiponectin and leptin concentrations and prostate cancer risk and survival. Clin Chem 2009; 56:34-43. [PMID: 19910504 DOI: 10.1373/clinchem.2009.133272] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Adipocytokines may mediate the association between adiposity and lethal prostate cancer outcomes. METHODS In the Physicians' Health Study, we prospectively examined the association of prediagnostic plasma concentrations of adiponectin and leptin with risk of developing incident prostate cancer (654 cases diagnosed 1982-2000 and 644 age-matched controls) and, among cases, risk of dying from prostate cancer by 2007. RESULTS Adiponectin concentrations were not associated with risk of overall prostate cancer. However, men with higher adiponectin concentrations had lower risk of developing high-grade or lethal cancer (metastatic or fatal disease). The relative risk (95% CI) comparing the highest quintile to the lowest (Q5 vs Q1) was 0.25 (95% CI 0.07-0.87; P(trend) = 0.02) for lethal cancer. Among all the cases, higher adiponectin concentrations predicted lower prostate cancer-specific mortality [hazard ratio (HR)(Q5 vs Q1)= 0.39; 95% CI 0.17-0.85; P(trend) = 0.02], independent of body mass index (BMI), plasma C-peptide (a marker of insulin secretion), leptin, clinical stage, and tumor grade. This inverse association was apparent mainly among men with a BMI >or=25 kg/m(2) (HR(Q5 vs Q1)= 0.10; 95% CI 0.01-0.78; P(trend) = 0.02), but not among men of normal weight (P(trend) = 0.51). Although the correlation of leptin concentrations with BMI (r = 0.58, P < 0.001) was stronger than that of adiponectin (r = -0.17, P < 0.001), leptin was unrelated to prostate cancer risk or mortality. CONCLUSIONS Higher prediagnostic adiponectin (but not leptin) concentrations predispose men to a lower risk of developing high-grade prostate cancer and a lower risk of subsequently dying from the cancer, suggesting a mechanistic link between obesity and poor prostate cancer outcome.
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Affiliation(s)
- Haojie Li
- GlaxoSmithKline R&D, Worldwide Epidemiology (Oncology), Collegeville, PA, USA
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Dror Michaelson M, Regan MM, Oh WK, Kaufman DS, Olivier K, Michaelson SZ, Spicer B, Gurski C, Kantoff PW, Smith MR. Phase II study of sunitinib in men with advanced prostate cancer. Ann Oncol 2009; 20:913-20. [PMID: 19403935 DOI: 10.1093/annonc/mdp111] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND This study explored the efficacy and tolerability of sunitinib, an inhibitor of tyrosine kinase receptors, in men with castration-resistant prostate cancer (CRPC). METHODS Men with no prior chemotherapy (group A) and men with docetaxel (Taxotere)-resistant prostate cancer (group B) were treated with sunitinib. The primary end point was confirmed 50% prostate-specific antigen (PSA) decline. Secondary end points included objective response rate and safety. Serum-soluble biomarkers were measured. RESULTS Seventeen men were enrolled in each group. One confirmed PSA response was observed in each group, and an additional eight men and seven men had stable PSA at week 12 in groups A and B, respectively. Improvements in imaging were observed in the absence of post-treatment PSA declines. Common adverse effects included fatigue, nausea, diarrhea, myelosuppression and transaminase elevation. Significant changes following sunitinib treatment were observed in serum-soluble biomarkers including soluble vascular endothelial growth factor receptor-2, platelet-derived growth factor aa, placental growth factor and leptin. CONCLUSIONS Sunitinib monotherapy resulted in few confirmed 50% post-treatment declines in PSA in men with CRPC. Serum markers of angiogenesis confirmed on-target effects of sunitinib. Assessments of radiographic disease status were often discordant with changes in PSA, indicating that alternate end points are important in future trials.
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Affiliation(s)
- M Dror Michaelson
- Division of Hematology/Oncology, Massachusetts General Hospital, Boston, MA 02114, USA.
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Moore SC, Leitzmann MF, Albanes D, Weinstein SJ, Snyder K, Virtamo J, Ahn J, Mayne ST, Yu H, Peters U, Gunter MJ. Adipokine genes and prostate cancer risk. Int J Cancer 2009; 124:869-76. [PMID: 19035456 DOI: 10.1002/ijc.24043] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Adiposity and adipocyte-derived cytokines have been implicated in prostate carcinogenesis. However, the relationship of adipokine gene variants with prostate cancer risk has not been thoroughly investigated. We therefore examined common variants of the IL6, LEP, LEPR, TNF and ADIPOQ genes in relation to prostate cancer in a case-control study nested within a large cohort of Finnish men. The study sample consisted of 1,053 cases of prostate cancer, diagnosed over an average 11 years of follow up, and 1,053 controls matched to the cases on age, intervention group and date of baseline blood draw. Logistic regression was used to model the relative odds of prostate cancer. We also examined genotypes in relation to serum insulin, IGF-1 and IGF-1:IGFBP-3 among 196 controls. Variant alleles at three loci (-14858A>G, -13973A>C, -13736C>A) in a potential regulatory region of the LEP gene conferred a statistically significant 20% reduced risk of prostate cancer. For example, at the -14858A>G locus, heterozygotes and homozygotes for the A allele had an odds ratio (OR) of prostate cancer of 0.76 [95% confidence interval (CI) 0.62, 0.93] and 0.79 (95% CI 0.60, 1.04), respectively. At 13288G>A, relative to the GG genotype, the AA genotype was associated with a suggestive increased risk of prostate cancer (OR = 1.29; 95% CI 0.99,1.67; p(trend) = 0.05). Polymorphisms in the IL6, LEPR, TNF and ADIPOQ genes were not associated with prostate cancer. Allelic variants in the LEP gene are related to prostate cancer risk, supporting a role for leptin in prostate carcinogenesis.
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Affiliation(s)
- Steven C Moore
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA.
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Tolman JR, Lephart ED, Setchell KD, Eggett DL, Christensen MJ. Timing of supplementation of selenium and isoflavones determines prostate cancer risk factor reduction in rats. Nutr Metab (Lond) 2008; 5:31. [PMID: 19000315 PMCID: PMC2615019 DOI: 10.1186/1743-7075-5-31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Accepted: 11/10/2008] [Indexed: 11/26/2022] Open
Abstract
Background High dietary intake of selenium or isoflavones reduces risk factors for prostate cancer. We tested whether combined supplementation of these two dietary components would reduce prostate cancer risk factors in rats more than supplementation of each component individually. Methods Male Noble rat pups were exposed from conception to diets containing an adequate (0.33–0.45 mg/kg diet) or high (3.33–3.45 mg/kg) concentration of selenium as Se-methylselenocysteine and a low (10 mg/kg) or high (600 mg/kg) level of isoflavones in a 2 × 2 factorial design. Pups consumed their respective diets until sacrifice at 35, 100, or 200 days. Male Noble rat breeders, whose exposure to the diets began after puberty, were sacrificed at 336 days. Rats were weighed biweekly. Blood was collected at the time of sacrifice and body fat and prostates were dissected and weighed. Serum levels of leptin, IGF-1, and testosterone were determined using ELISA kits. Serum levels of isoflavones were assayed by GC/MS. Liver activity of selenium-dependent glutathione peroxidase 1 was measured as an indicator of selenium status. Results Serum isoflavone concentrations were nearly 100-fold higher at 35 days of age (1187.1 vs. 14.4 ng/mL, mean ± SD) in pups fed the high vs. low isoflavone diets, and remained so at 100 and 200 days, and in breeders. There were no dietary differences in liver glutathione peroxidase activity in pups or breeders. High isoflavone intake significantly (p = 0.001–0.047) reduced body weight in rat pups from 35 days onward, but not in breeders. Body fat and leptin were likewise significantly reduced by high isoflavones in pups while effects in breeders were less pronounced but still significant. High intake of Se and isoflavones each decreased serum IGF-1 in pups at 100 and 200 days, but not in breeders. No consistent dietary effects were observed on serum testosterone or relative weights of prostates. In pups, the combination of high isoflavones and high selenium produced the lowest weight gain, the lowest serum leptin, and the lowest serum IGF-1 concentrations of all four diets. Conclusion Combined intake of high selenium and high isoflavones may achieve greater chemopreventive effects than either compound individually. The timing of supplementation may determine the significance of its effects.
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Affiliation(s)
- Jessica R Tolman
- Department of Nutrition, Dietetics and Food Science, Brigham Young University, Provo, Utah 84602, USA
| | - Edwin D Lephart
- Department of Physiology, Developmental Biology and the Neuroscience Center, Brigham Young University, Provo, Utah 84602, USA
| | - Kenneth Dr Setchell
- Department of Pediatrics, Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA
| | - Dennis L Eggett
- Department of Statistics, Brigham Young University, Provo, Utah 84602, USA
| | - Merrill J Christensen
- Department of Nutrition, Dietetics and Food Science, Brigham Young University, Provo, Utah 84602, USA.,Cancer Research Center, Brigham Young University, Provo, Utah 84602, USA
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Differential effects of leptin on the invasive potential of androgen-dependent and -independent prostate carcinoma cells. J Biomed Biotechnol 2008; 2008:163902. [PMID: 18584049 PMCID: PMC2435597 DOI: 10.1155/2008/163902] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2007] [Revised: 02/10/2008] [Accepted: 04/08/2008] [Indexed: 11/17/2022] Open
Abstract
Obesity has been linked with an increased risk of prostate cancer. The formation of toxic free oxygen radicals has been implicated in obesity mediated disease processes. Leptin is one of the major cytokines produced by adipocytes and controls body weight homeostasis through food intake and energy expenditure. The rationale of the study was to determine the impact of leptin on the metastatic potential of androgen-sensitive (LNCaP) cells as well as androgen-insensitive (PC-3 and DU-145) cells. At a concentration of 200 nm, LNCaP cells showed a significant increase (20% above control; P < .0001) in cellular proliferation without any effect on androgen-insensitive cells. Furthermore, exposure to leptin caused a significant (P < .01 to P < .0001) dose-dependent decrease in migration and invasion of PC3 and Du-145 prostate carcinoma cell lines. At the molecular level, exposure of androgen-independent prostate cancer cells to leptin stimulates the phosphorylation of MAPK at early time point as well as the transcription factor STAT3, suggesting the activation of the intracellular signaling cascade upon leptin binding to its cognate receptor. Taken together, these results suggest that leptin mediates the invasive potential of prostate carcinoma cells, and that this effect is dependent on their androgen sensitivity.
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Leitzmann MF, Ahn J, Albanes D, Hsing AW, Schatzkin A, Chang SC, Huang WY, Weiss JM, Danforth KN, Grubb RL, Andriole GL. Diabetes mellitus and prostate cancer risk in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial. Cancer Causes Control 2008; 19:1267-76. [PMID: 18618278 PMCID: PMC6411285 DOI: 10.1007/s10552-008-9198-6] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Accepted: 06/19/2008] [Indexed: 11/30/2022]
Abstract
Objective A history of diabetes has been fairly consistently related to a reduced prostate cancer risk, but previous investigations have not always addressed whether the relation with diabetes varies by prostate cancer aggressiveness or the association between diabetes and prostate cancer is modified by physical activity level and body mass, variables closely related to glucose metabolism. Methods We prospectively examined the diabetes–prostate cancer risk relationship among 33,088 men in the screening arm of the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial. Results During 8.9 years follow-up, we ascertained 2,058 incident prostate cancer cases. Diabetes history was related to decreased risk of total prostate cancer (RR = 0.80, 95% CI = 0.68–0.95). The apparent protection afforded by diabetes was primarily due to the inverse relation with non-aggressive disease (i.e., the combination of low grade (Gleason sum <8) and low stage (clinical stages I or II); RR = 0.75; 95% CI = 0.62–0.91). In contrast, no association was noted between diabetes and aggressive disease (i.e., high grade or high stage (Gleason sum ≥8 or clinical stages III or IV); RR = 1.04, 95% CI = 0.74–1.45). In further analyses, the association between diabetes and aggressive prostate cancer was suggestively positive for men who were lean (RR = 1.64, 95% CI = 0.87–3.07; BMI < 25 kg/m2) and it was positive for men who were the most physically active (RR = 1.63; 95% CI = 1.07–2.62; 3+ hours vigorous activity/week). By comparison, no relations of diabetes to aggressive prostate cancer were noted for their heavier or physically less active counterparts (p-value for tests of interaction = 0.10 and 0.03 BMI and physical activity, respectively). Conclusion In this study, diabetes showed divergent relations with prostate cancer by tumor aggressiveness. Specifically, diabetes was inversely associated with early stage prostate cancer but it showed no relation with aggressive prostate cancer. Exploratory analyses suggested a positive association between diabetes and aggressive prostate cancer in the subgroup of men with a low BMI.
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Affiliation(s)
- Michael F Leitzmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, USA.
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Zhou JR, Li L, Pan W. Dietary soy and tea combinations for prevention of breast and prostate cancers by targeting metabolic syndrome elements in mice. Am J Clin Nutr 2007; 86:s882-8. [PMID: 18265483 PMCID: PMC2706153 DOI: 10.1093/ajcn/86.3.882s] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The prevalence of metabolic syndrome is high and is increasing in parallel with increasing incidences of breast and prostate cancers. The combination of soy with tea was shown to have synergistic effects on preventing breast and prostate tumors, but the effects of soy and tea combinations on metabolic syndrome-related elements have not been investigated. OBJECTIVE We aimed to determine the effects of soy and tea components, alone and in combination, on abdominal adipose mass and serum concentrations of adipokines, growth factors, and sex hormones in male and female mice. DESIGN Male and female FVB/N mice were treated with soy, tea components, or both. Food intake and body weight were monitored weekly. At the end of the experiment, abdominal white adipose tissue was weighed, and serum concentrations of biomarkers were measured. RESULTS Whole teas, but not the tea polyphenol extracts, significantly reduced abdominal white adipose tissue by 43-60% in female mice and by 65-70% in male mice. The combination of soy phytochemical concentrate and green tea reduced serum insulin-like growth factor-I concentrations in both male and female mice in a synergistic manner. The soy phytochemical concentrate and tea combinations reduced serum estrogen concentrations in female mice in a synergistic manner. Soy phytochemical concentrate and teas also significantly reduced serum leptin concentrations in both male and female mice and testosterone concentrations in male mice. CONCLUSION Further research is warranted to investigate whether soy and tea combinations may prevent breast or prostate cancer in a synergistic manner in part by alleviating metabolic disorders.
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Affiliation(s)
- Jin-Rong Zhou
- Nutrition and Metabolism Laboratory, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
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