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Miller JL, Reddy A, Harman RM, Van de Walle GR. A xenotransplantation mouse model to study physiology of the mammary gland from large mammals. PLoS One 2024; 19:e0298390. [PMID: 38416747 PMCID: PMC10901318 DOI: 10.1371/journal.pone.0298390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/23/2024] [Indexed: 03/01/2024] Open
Abstract
Although highly conserved in structure and function, many (patho)physiological processes of the mammary gland vary drastically between mammals, with mechanisms regulating these differences not well understood. Large mammals display variable lactation strategies and mammary cancer incidence, however, research into these variations is often limited to in vitro analysis due to logistical limitations. Validating a model with functional mammary xenografts from cryopreserved tissue fragments would allow for in vivo comparative analysis of mammary glands from large and/or rare mammals and would improve our understanding of postnatal development, lactation, and premalignancy across mammals. To this end, we generated functional mammary xenografts using mammary tissue fragments containing mammary stroma and parenchyma isolated via an antibody-independent approach from healthy, nulliparous equine and canine donor tissues to study these species in vivo. Cryopreserved mammary tissue fragments were xenotransplanted into de-epithelialized fat pads of immunodeficient mice and resulting xenografts were structurally and functionally assessed. Preimplantation of mammary stromal fibroblasts was performed to promote ductal morphogenesis. Xenografts recapitulated mammary lobule architecture and contained donor-derived stromal components. Mammatropic hormone stimulation resulted in (i) upregulation of lactation-associated genes, (ii) altered proliferation index, and (iii) morphological changes, indicating functionality. Preimplantation of mammary stromal fibroblasts did not promote ductal morphogenesis. This model presents the opportunity to study novel mechanisms regulating unique lactation strategies and mammary cancer induction in vivo. Due to the universal applicability of this approach, this model serves as proof-of-concept for developing mammary xenografts for in vivo analysis of virtually any mammals, including large and rare mammals.
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Affiliation(s)
- James L Miller
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Alexandra Reddy
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Rebecca M Harman
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Gerlinde R Van de Walle
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
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Breton C, Kessel K, Robinson A, Altaf K, Luth ES. Sublethal perfluorooctanoic acid and perfluorooctanesulfonic acid delay C. elegans larval development and population growth but do not alter egg hatching. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:22-32. [PMID: 37818790 DOI: 10.1080/15287394.2023.2265419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) are polyfluoroalkyl substances (PFAS) used as surface coatings in manufacturing. Exposure to PFAS was shown to be correlated with infertility, low birth weight, and delayed aspects of pubertal development in mammals. Despite many correlational studies, there have been few direct investigations examining the link between PFAS exposure and early animal development. The aim of this study was to (1) examine the effects of PFOA on development and reproduction using the roundworm Caenorhabditis elegans, a model with a high predictive value for human reproductive toxicity and (2) compare observations to exposure to PFOS. PFAS exposure did not markedly alter egg hatching but delayed population growth, in part due to slower larval development. PFAS-exposed worms took longer to progress through larval stages to reach reproductive maturity, and this was not attributed to PFOA-induced toxicity to their food. Our results provide a robust benchmark for testing developmental and reproductive toxicity for other PFAS and PFAS-alternatives which continue to be used in manufacturing and released into the environment.
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Affiliation(s)
- Celine Breton
- Department of Biology, Simmons University, Boston, MA, USA
| | - Kaitlyn Kessel
- Department of Biology, Simmons University, Boston, MA, USA
| | - Ariel Robinson
- Department of Biology, Simmons University, Boston, MA, USA
| | - Kainat Altaf
- Department of Biology, Simmons University, Boston, MA, USA
| | - Eric S Luth
- Department of Biology, Simmons University, Boston, MA, USA
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3
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Shen Y, Yang Q, Hu T, Wang Y, Chen L, Gao F, Zhu W, Hu G, Zhou J, Wang C, Bao Y. Association of prolactin with all-cause and cardiovascular mortality among patients with type 2 diabetes: a real-world study. Eur J Prev Cardiol 2023; 30:1439-1447. [PMID: 37042353 DOI: 10.1093/eurjpc/zwad112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 04/13/2023]
Abstract
AIMS The association between prolactin and mortality has been less studied, and findings were inconsistent among different populations. We aimed to investigate the association between serum prolactin (PRL) and mortality among patients with type 2 diabetes. METHODS AND RESULTS We performed a retrospective cohort study of 10 907 patients with at least 2 prolactin measurements within 2 years since their first inpatient diagnosis of type 2 diabetes. Baseline and mean values of serum PRL were used as exposures. A multivariable-adjusted Cox proportional hazards model was used to estimate the association between PRL and mortality. During a mean follow-up of 5.34 years, 863 patients died, of whom 274 were due to cardiovascular events. Multivariable-adjusted hazard ratios (aHRs) based on different levels of baseline PRL (<100, 100-199, 200-299, and ≥300 mIU/L) were 1.00, 1.10 [95% confidence interval (CI), 0.90-1.36], 1.35 (95% CI 1.11-1.67), and 1.49 (95% CI 1.18-1.84) for all-cause mortality and 1.00, 1.24 (95% CI 0.86-1.81), 1.71 (95% CI 1.14-2.62), and 2.42 (95% CI 1.55-3.78) for cardiovascular mortality, respectively. Positive associations were also found when we used the mean values of PRL as the exposure. These associations were consistent among patients of different baseline characteristics. Further sensitivity analyses excluding patients with subclinical or clinical hypothyroidism at baseline and who died within the first 6 months since baseline demonstrated similar results. CONCLUSIONS A positive association between baseline PRL and mortality was observed among patients with type 2 diabetes. Prolactin may be considered a potential biomarker of mortality among patients with type 2 diabetes.
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Affiliation(s)
- Yun Shen
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Qing Yang
- Division of Vital Statistics, Institute of Health Information, Shanghai Municipal Center for Disease Control and Prevention, 1380 West Zhongshan Road, Shanghai 200336, China
| | - Tingting Hu
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Yaxin Wang
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Lei Chen
- Division of Vital Statistics, Institute of Health Information, Shanghai Municipal Center for Disease Control and Prevention, 1380 West Zhongshan Road, Shanghai 200336, China
| | - Fei Gao
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Wei Zhu
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Gang Hu
- Chronic Disease Epidemiology, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA 70808, USA
| | - Jian Zhou
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
| | - Chunfang Wang
- Division of Vital Statistics, Institute of Health Information, Shanghai Municipal Center for Disease Control and Prevention, 1380 West Zhongshan Road, Shanghai 200336, China
| | - Yuqian Bao
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Shanghai 200233, China
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Altieri MA, da Silva AS, da Silva Moreira S, Zapaterini JR, Arena AC, Barbisan LF. Safety of lactational exposure to venlafaxine on the rat mammary gland development and carcinogenesis in F1 female offspring. Reprod Toxicol 2023; 120:108451. [PMID: 37532207 DOI: 10.1016/j.reprotox.2023.108451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023]
Abstract
The chronic use of selective serotonin reuptake inhibitors or serotonin-norepinephrine reuptake inhibitors (SNRIs) may result in human gynecomastia, mammoplasia, galactorrhea, and elevated breast cancer risk. As antidepressants are frequently used for postpartum depression (PPD) treatment, this study investigated the adverse effects of lactational exposure to venlafaxine (VENL, a selective SNRI) on mammary gland development and carcinogenesis in F1 female offspring. Thus, lactating Wistar rats (F0) received VENL by oral gavage at daily doses of 3.85, 7.7, or 15.4 mg/kg (N = 9, each group) from lactational day (LD 1) until the weaning of the offspring (LD 21). F1 female offspring were euthanized for mammary gland, and ovary histological analyses on the post-natal day (PND) 22 and 30 (1 pup/litter/period, N = 9, each group). At PND 22, other females (2 pups/litter, N = 18, each group) received a single dose of carcinogen N-methyl-N-nitrosourea (MNU, 50 mg/kg) intraperitoneally (i.p.) for tumor susceptibility assay until PND 250. Tumor incidence and latency were recorded and representative tumor samples were collected for histopathology. The results indicate that lactational exposure to VENL did not alter the development of the mammary gland (epithelial ductal tree or the mean number of terminal end buds), or the ovary (weight and primary, secondary, tertiary, and Graafian follicles) in prepubertal F1 female offspring. In addition, VENL exposure did not influence tumor incidence or tumor latency in adult female offspring that received MNU. Thus, the findings of this animal study indicated that lactational VENL exposure, a period similar to human PPD, did not exert an adverse effect on the mammary gland development at the prepubertal phase or on chemically induced mammary tumorigenesis in adult F1 female rats.
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Affiliation(s)
- Marcelo Augusto Altieri
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil
| | - Anielly Sarana da Silva
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil
| | - Suyane da Silva Moreira
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil
| | - Joyce Regina Zapaterini
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil; São Paulo State University (UNESP), Faculty of Medicine, Department of Pathology, Botucatu, SP, Brazil
| | - Arielle Cristina Arena
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil
| | - Luís Fernando Barbisan
- São Paulo State University (UNESP), Institute of Biosciences, Department of Structural and Functional Biology, Botucatu, SP, Brazil.
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Mao Y, Yang H, Ma X, Wang C, Zhang L, Cui Y. Prolactin regulates RANKL expression via signal transducer and activator of transcription 5a signaling in mammary epithelial cells of dairy cows. Cell Biol Int 2023; 47:920-928. [PMID: 36651326 DOI: 10.1002/cbin.11988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/17/2022] [Accepted: 01/02/2023] [Indexed: 01/19/2023]
Abstract
Receptor of activated nuclear factor kappa B ligand (RANKL) is regulated by prolactin in the mammary gland. However, the intrinsic molecular mechanism is not well understood. Herein, mammary epithelial cells (MECs) of dairy cows were isolated to characterize the molecular mechanism of prolactin in vitro. We demonstrated that prolactin stimulation increased the expression of RANKL in MECs. Moreover, the expression of RANKL induced by prolactin was inhibited by the prolactin receptor or signal transducer and activator of transcription 5A (STAT5a) knockdown. Furthermore, prolactin markedly increased RANKL-Luciferase reporter activity in MECs. We identified a putative gamma-interferon activated site (GAS) in the region between residues -883 to -239 bp of the RANKL promoter. Subsequently, we found that the mutated GAS sequence failed to respond to prolactin stimulation. In addition, STAT5a knockdown markedly decreased prolactin-stimulated RANKL promoter activity. Western blot results revealed that RANKL overexpression markedly decreased the STAT5a phosphorylation level in MECs. These findings indicate that prolactin could regulate RANKL promoter activity via STAT5a, contributing to increased RANKL expression in MECs. RANKL may have a negative regulatory effect on STAT5a activity.
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Affiliation(s)
- Yongjin Mao
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
| | - Huilin Yang
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
| | - Xiaocong Ma
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
| | - Chunmei Wang
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
| | - Li Zhang
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
| | - Yingjun Cui
- College of Life Science, Key Laboratory of Dairy Science of Education Ministry, Northeast Agricultural University, Harbin, China
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Luzardo-Ocampo I, Dena-Beltrán JL, Ruiz-Herrera X, Ocampo-Ruiz AL, Martínez de la Escalera G, Clapp C, Macotela Y. Obesity-derived alterations in the lactating mammary gland: Focus on prolactin. Mol Cell Endocrinol 2023; 559:111810. [PMID: 36374835 DOI: 10.1016/j.mce.2022.111810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 11/07/2022]
Abstract
Obesity is a modern pandemic with negative consequences in women's reproductive health. Women with overweight and obesity can develop mammary gland alterations that unable exclusive breastfeeding. Obesity associates with a disturbed lactating mammary gland endocrine environment including a decreased action of the hormone prolactin (PRL), the master regulator of lactation. The PRL receptor and the action of PRL are reduced in the mammary gland of lactating rodents fed an obesogenic diet and are contributing factors to impaired lactation in obesity. Also, treatment with PRL improves milk yield in women with lactation insufficiency. This review focuses on the impact of diet-induced obesity in the lactating mammary gland and how obesity impairs the lactogenic action of PRL. Although obesity alters lactation performance in humans and rodents, the responsible mechanisms have been mainly addressed in rodents.
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Affiliation(s)
- Ivan Luzardo-Ocampo
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - José L Dena-Beltrán
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - Xarubet Ruiz-Herrera
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - Ana Luisa Ocampo-Ruiz
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - Gonzalo Martínez de la Escalera
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - Carmen Clapp
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico
| | - Yazmín Macotela
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230, Querétaro, Mexico.
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7
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Hou P, Dai W, Jin Y, Zhao F, Liu J, Liu H. Maternal exposure to di-2-ethylhexyl phthalate (DEHP) depresses lactation capacity in mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155813. [PMID: 35550907 DOI: 10.1016/j.scitotenv.2022.155813] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Increasing evidence shows that di-2-ethylhexyl phthalate (DEHP), mostly commonly used phthalate for the production of flexible polyvinyl chloride (PVC), has the potential to induce serious health risks in humans. However, the understanding of DEHP-induced lactation performance remains largely unknown. We sought to investigate the adverse effects of DEHP on lactation and examine the underlying mechanism linking DEHP exposure with the lactation alterations. We successfully adapted a maternal DEHP exposure model in female pregnant/lactating mice. Then we determined effects of DEHP exposure on food intake, body weight and milk production as well as the alterations in endocrine factors in lactating mice. The integrated metabonomic and transcriptomic analyses of the mammary gland were performed to measure the changed metabolites and genes related to DEHP exposure-induced lactation alterations. We observed the reduced food intake with elevated blood leptin and the decreased milk yield as well as the reduced levels of serum prolactin, growth hormone, insulin-like growth factor 1 and insulin after exposed to DEHP. Furthermore, 208 metabolites and 3452 genes were separately identified as differentially expressed features associated with DEHP exposure. Integrated metabonomic and transcriptomic analyses demonstrated that DEHP caused lactation depression mainly through impairing energy generation, inducing stress responses along with the hypoactivation of inflammation, reducing the production of antioxidants, disrupting hormone homeostasis and repressing the synthesis of milk constituents (the lower glucose availability for lactose synthesis; the disruption of milk fat globule membrane for lipid droplet formation; the ribosomal dysfunction and disruption of post-modifications for milk protein synthesis). We demonstrated that DEHP disrupted several lactation-related hormone homeostasis and multiple processes like energy insufficiency, inflammation activation, oxidative stress aggravation and disturbance of milk production in the mammary gland of female lactating mice. Our results provide valuable information for the health risk of plastic additive (DEHP) on female lactation dysfunction.
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Affiliation(s)
- Pengfei Hou
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wenting Dai
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yanshan Jin
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Fengqi Zhao
- Laboratory of Lactation and Metabolic Physiology, Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA
| | - Jianxin Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hongyun Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
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8
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Brockhoff G. "Shedding" light on HER4 signaling in normal and malignant breast tissues. Cell Signal 2022; 97:110401. [PMID: 35820544 DOI: 10.1016/j.cellsig.2022.110401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/25/2022]
Abstract
Receptor Tyrosine Kinases of the Epidermal Growth Factor Receptor Family play a pivotal role as drivers of carcinogenesis and uncontrolled cell growth for a variety of malignancies, not least for breast cancer. Besides the estrogen receptor, the HER2 receptor was and still is a representative marker for advanced taxonomic sub-differentiation of breast cancer and emerged as one of the first therapeutic targets for antibody based therapies. Since the approval of trastuzumab for the therapy of HER2-positive breast cancer in 1998 anti-HER2 treatment strategies are being modified, refined, and successfully combined with complementary treatments, nevertheless there is still potential for improvement. The HER2 relatives, namely HER1 (i.e., EGFR), HER3 and HER4 share a high degree of molecular homology and together form a functional unit for signal transmission. Under regular conditions, receptor coexpression patterns and receptor interaction represent key parameters for signaling robustness, which ensures cellular growth control and enables tissue differentiation. In addition, treatment efficiency of e.g., an anti-HER2 targeting is substantially determined by the expression pattern of HER receptors on target cells. Within the receptor family, the HER4 plays a particular role and is engaged in exceptional signaling activities. A favorable prognostic impact has been attributed to HER4 expression in breast cancer under specific molecular conditions. HER4-specific cellular effects are initially determined by a ligand-dependent or -independent receptor activation. Essential processes as cell growth and proliferation, cell differentiation, and apoptotic cell death can be initiated by this receptor. This review gives an overview of the role of HER4 in normal and malignant breast epithelial cells and tissues. Specific mechanism of HER4 activation and subsequent intracellular signaling will be described by taking a focus on effects provoked by receptor shedding. HER4 activities and specific effects will be correlated to breast cancer subtypes and the impact of HER4 on course and outcome of disease will be considered. Moreover, current and potential therapeutic approaches will be discussed.
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Affiliation(s)
- Gero Brockhoff
- Department of Gynecology and Obstetrics, University Medical Center Regensburg, Regensburg, Germany.
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9
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Plante I, Winn LM, Vaillancourt C, Grigorova P, Parent L. Killing two birds with one stone: Pregnancy is a sensitive window for endocrine effects on both the mother and the fetus. ENVIRONMENTAL RESEARCH 2022; 205:112435. [PMID: 34843719 DOI: 10.1016/j.envres.2021.112435] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Pregnancy is a complex process requiring tremendous physiological changes in the mother in order to fulfill the needs of the growing fetus, and to give birth, expel the placenta and nurse the newborn. These physiological modifications are accompanied with psychological changes, as well as with variations in habits and behaviors. As a result, this period of life is considered as a sensitive window as impaired functional and physiological changes in the mother can have short- and long-term impacts on her health. In addition, dysregulation of the placenta and of mechanisms governing placentation have been linked to chronic diseases later-on in life for the fetus, in a concept known as the Developmental Origin of Health and Diseases (DOHaD). This concept stipulates that any change in the environment during the pre-conception and perinatal (in utero life and neonatal) period to puberty, can be "imprinted" in the organism, thereby impacting the health and risk of chronic diseases later in life. Pregnancy is a succession of events that is regulated, in large part, by hormones and growth factors. Therefore, small changes in hormonal balance can have important effects on both the mother and the developing fetus. An increasing number of studies demonstrate that exposure to endocrine disrupting compounds (EDCs) affect both the mother and the fetus giving rise to growing concerns surrounding these exposures. This review will give an overview of changes that happen during pregnancy with respect to the mother, the placenta, and the fetus, and of the current literature regarding the effects of EDCs during this specific sensitive window of exposure.
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Affiliation(s)
- Isabelle Plante
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, QC, Canada.
| | - Louise M Winn
- Queen's University, School of Environmental Studies, Department of Biomedical and Molecular Sciences, Kingston, ON, Canada
| | | | - Petya Grigorova
- Département Science et Technologie, Université TELUQ, Montreal, QC, Canada
| | - Lise Parent
- Département Science et Technologie, Université TELUQ, Montreal, QC, Canada
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10
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Chemical Effects on Breast Development, Function, and Cancer Risk: Existing Knowledge and New Opportunities. Curr Environ Health Rep 2022; 9:535-562. [PMID: 35984634 PMCID: PMC9729163 DOI: 10.1007/s40572-022-00376-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Population studies show worrisome trends towards earlier breast development, difficulty in breastfeeding, and increasing rates of breast cancer in young women. Multiple epidemiological studies have linked these outcomes with chemical exposures, and experimental studies have shown that many of these chemicals generate similar effects in rodents, often by disrupting hormonal regulation. These endocrine-disrupting chemicals (EDCs) can alter the progression of mammary gland (MG) development, impair the ability to nourish offspring via lactation, increase mammary tissue density, and increase the propensity to develop cancer. However, current toxicological approaches to measuring the effects of chemical exposures on the MG are often inadequate to detect these effects, impairing our ability to identify exposures harmful to the breast and limiting opportunities for prevention. This paper describes key adverse outcomes for the MG, including impaired lactation, altered pubertal development, altered morphology (such as increased mammographic density), and cancer. It also summarizes evidence from humans and rodent models for exposures associated with these effects. We also review current toxicological practices for evaluating MG effects, highlight limitations of current methods, summarize debates related to how effects are interpreted in risk assessment, and make recommendations to strengthen assessment approaches. Increasing the rigor of MG assessment would improve our ability to identify chemicals of concern, regulate those chemicals based on their effects, and prevent exposures and associated adverse health effects.
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11
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Abstract
Prolactin coordinates with the ovarian steroids to orchestrate mammary development and lactation, culminating in nourishment and an increasingly appreciated array of other benefits for neonates. Its central activities in mammary epithelial growth and differentiation suggest that it plays a role(s) in breast cancer, but it has been challenging to identify its contributions, essential for incorporation into prevention and treatment approaches. Large prospective epidemiologic studies have linked higher prolactin exposure to increased risk, particularly for ER+ breast cancer in postmenopausal women. However, it has been more difficult to determine its actions and clinical consequences in established tumors. Here we review experimental data implicating multiple mechanisms by which prolactin may increase the risk of breast cancer. We then consider the evidence for role(s) of prolactin and its downstream signaling cascades in disease progression and treatment responses, and discuss how new approaches are beginning to illuminate the biology behind the seemingly conflicting epidemiologic and experimental studies of prolactin actions across diverse breast cancers.
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12
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Sun Y, Yang N, Utama FE, Udhane SS, Zhang J, Peck AR, Yanac A, Duffey K, Langenheim JF, Udhane V, Xia G, Peterson JF, Jorns JM, Nevalainen MT, Rouet R, Schofield P, Christ D, Ormandy CJ, Rosenberg AL, Chervoneva I, Tsaih SW, Flister MJ, Fuchs SY, Wagner KU, Rui H. NSG-Pro mouse model for uncovering resistance mechanisms and unique vulnerabilities in human luminal breast cancers. SCIENCE ADVANCES 2021; 7:eabc8145. [PMID: 34524841 PMCID: PMC8443188 DOI: 10.1126/sciadv.abc8145] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Most breast cancer deaths are caused by estrogen receptor-α–positive (ER+) disease. Preclinical progress is hampered by a shortage of therapy-naïve ER+ tumor models that recapitulate metastatic progression and clinically relevant therapy resistance. Human prolactin (hPRL) is a risk factor for primary and metastatic ER+ breast cancer. Because mouse prolactin fails to activate hPRL receptors, we developed a prolactin-humanized Nod-SCID-IL2Rγ (NSG) mouse (NSG-Pro) with physiological hPRL levels. Here, we show that NSG-Pro mice facilitate establishment of therapy-naïve, estrogen-dependent PDX tumors that progress to lethal metastatic disease. Preclinical trials provide first-in-mouse efficacy of pharmacological hPRL suppression on residual ER+ human breast cancer metastases and document divergent biology and drug responsiveness of tumors grown in NSG-Pro versus NSG mice. Oncogenomic analyses of PDX lines in NSG-Pro mice revealed clinically relevant therapy-resistance mechanisms and unexpected, potently actionable vulnerabilities such as DNA-repair aberrations. The NSG-Pro mouse unlocks previously inaccessible precision medicine approaches for ER+ breast cancers.
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Affiliation(s)
- Yunguang Sun
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Ning Yang
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Fransiscus E. Utama
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Sameer S. Udhane
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Junling Zhang
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Amy R. Peck
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Alicia Yanac
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Katherine Duffey
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - John F. Langenheim
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Vindhya Udhane
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Guanjun Xia
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Jess F. Peterson
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Julie M. Jorns
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Marja T. Nevalainen
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Romain Rouet
- Immunology Division, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Peter Schofield
- Immunology Division, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Daniel Christ
- Immunology Division, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Christopher J. Ormandy
- Garvan Institute of Medical Research and St. Vincent’s Clinical School, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Anne L. Rosenberg
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Inna Chervoneva
- Department of Pharmacology, Division of Biostatistics, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Shirng-Wern Tsaih
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Michael J. Flister
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Serge Y. Fuchs
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Kay-Uwe Wagner
- Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA
| | - Hallgeir Rui
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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13
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Feyen E, Ricke-Hoch M, Van Fraeyenhove J, Vermeulen Z, Scherr M, Dugaucquier L, Viereck J, Bruyns T, Thum T, Segers VFM, Hilfiker-Kleiner D, De Keulenaer GW. ERBB4 and Multiple MicroRNAs That Target ERBB4 Participate in Pregnancy-Related Cardiomyopathy. Circ Heart Fail 2021; 14:e006898. [PMID: 34247489 DOI: 10.1161/circheartfailure.120.006898] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Peripartum cardiomyopathy (PPCM) is a life-threatening disease in women without previously known cardiovascular disease. It is characterized by a sudden onset of heart failure before or after delivery. Previous studies revealed that the generation of a 16-kDa PRL (prolactin) metabolite, the subsequent upregulation of miR-146a, and the downregulation of the target gene Erbb4 is a common driving factor of PPCM. METHODS miRNA profiling was performed in plasma of PPCM patients (n=33) and postpartum-matched healthy CTRLs (controls; n=36). Elevated miRNAs in PPCM plasma, potentially targeting ERBB4 (erythroblastic leukemia viral oncogene homolog 4), were overexpressed in cardiomyocytes using lentiviral vectors. Next, cardiac function, cardiac morphology, and PPCM phenotype were investigated after recurrent pregnancies of HZ (heterozygous) cardiomyocyte-specific Erbb4 mice (Erbb4F/+ αMHC-Cre+, n=9) with their age-matched nonpregnant CTRLs (n=9-10). RESULTS Here, we identify 9 additional highly conserved miRNAs (miR-199a-5p and miR-199a-3p, miR-145a-5p, miR-130a-3p, miR-135a-5p, miR-221-3p, miR-222-3p, miR-23a-3p, and miR19b-3p) that target tyrosine kinase receptor ERBB4 and are over 4-fold upregulated in plasma of PPCM patients at the time of diagnosis. We confirmed that miR-146a, miR-199a-5p, miR-221-3p, miR-222-3p, miR-23a-3p, miR-130a-5p, and miR-135-3p overexpression decreases ERBB4 expression in cardiomyocytes (-29% to -50%; P<0.05). In addition, we demonstrate that genetic cardiomyocyte-specific downregulation of Erbb4 during pregnancy suffices to induce a variant of PPCM in mice, characterized by left ventricular dilatation (postpartum second delivery: left ventricular internal diameter in diastole, +19±7% versus HZ-CTRL; P<0.05), increased atrial natriuretic peptide (ANP) levels (4-fold increase versus HZ-CTRL mice, P<0.001), decreased VEGF (vascular endothelial growth factor) and VE-cadherin levels (-33±17%, P=0.07; -27±20%, P<0.05 versus HZ-CTRL), and histologically enlarged cardiomyocytes (+20±21%, versus HZ-CTRL, P<0.05) but without signs of myocardial apoptosis and inflammation. CONCLUSIONS ERBB4 is essential to protect the maternal heart from peripartum stress. Downregulation of ERBB4 in cardiomyocytes induced by multiple miRNAs in the peripartum period may be crucial in PPCM pathophysiology. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT00998556.
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Affiliation(s)
- Eline Feyen
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology (M.R.-H., D.H.-K.), Hannover Medical School, Germany
| | - Jens Van Fraeyenhove
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Zarha Vermeulen
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation (M.S.), Hannover Medical School, Germany
| | - Lindsey Dugaucquier
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Janika Viereck
- Institute of Molecular and Translational Therapeutic Strategies (J.V., T.T.), Hannover Medical School, Germany
| | - Tine Bruyns
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (J.V., T.T.), Hannover Medical School, Germany
| | - Vincent F M Segers
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.).,Department of Cardiology, University Hospital Antwerp, Edegem, Belgium (V.F.M.S.). Department of Cardiology, ZNA Hospital, Antwerp, Belgium (G.W.D.K.)
| | | | - Gilles W De Keulenaer
- Department of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Physiopharmacology, University of Antwerp, Wilrijk, Belgium (E.F., J.V.f., Z.V., L.D., T.B., V.F.M.S., G.W.D.K.)
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14
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Vandenberg LN. Endocrine disrupting chemicals and the mammary gland. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2021; 92:237-277. [PMID: 34452688 DOI: 10.1016/bs.apha.2021.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Development of the mammary gland requires coordination of hormone signaling pathways including those mediated by estrogen, progesterone, androgen and prolactin receptors. These hormones play important roles at several distinct stages of life including embryonic/fetal development, puberty, pregnancy, lactation, and old age. This also makes the gland sensitive to perturbations from environmental agents including endocrine disrupting chemicals (EDCs). Although there is evidence from human populations of associations between EDCs and disruptions to breast development and lactation, these studies are often complicated by the timing of exposure assessments and the latency to develop breast diseases (e.g., years to decades). Rodents have been instrumental in providing insights-not only to the basic biology and endocrinology of the mammary gland, but to the effects of EDCs on this tissue at different stages of development. Studies, mostly but not exclusively, of estrogenic EDCs have shown that the mammary gland is a sensitive tissue, that exposures during perinatal development can produce abnormal mammary structures (e.g., alveolar buds, typically seen in pregnant females) in adulthood; that exposures during pregnancy can alter milk production; and that EDC exposures can enhance the response of the mammary tissue to hormones and chemical carcinogens. Other studies of persistent organic pollutants have shown that EDC exposures during critical windows of development can delay development of the gland, with lifelong consequences for the individual. Collectively, this work continues to support the conclusion that EDCs can harm the mammary gland, with effects that depend on the period of exposure and the period of evaluation.
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Affiliation(s)
- Laura N Vandenberg
- Department of Environmental Health Sciences, School of Public Health & Health Sciences, University of Massachusetts Amherst, Amherst, MA, United States.
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15
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Munoz-Muriedas J. Large scale meta-analysis of preclinical toxicity data for target characterisation and hypotheses generation. PLoS One 2021; 16:e0252533. [PMID: 34101743 PMCID: PMC8186779 DOI: 10.1371/journal.pone.0252533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/17/2021] [Indexed: 12/09/2022] Open
Abstract
Recent technological advances in the field of big data have increased our capabilities to query large databases and combine information from different domains and disciplines. In the area of preclinical studies, initiatives like SEND (Standard for Exchange of Nonclinical Data) will also contribute to collect and present nonclinical data in a consistent manner and increase analytical possibilities. With facilitated access to preclinical data and improvements in analytical algorithms there will surely be an expectation for organisations to ensure all the historical data available to them is leveraged to build new hypotheses. These kinds of analyses may soon become as important as the animal studies themselves, in addition to being critical components to achieve objectives aligned with 3Rs. This article proposes the application of meta-analyses at large scale in corporate databases as a tool to exploit data from both preclinical studies and in vitro pharmacological activity assays to identify associations between targets and tissues that can be used as seeds for the development of causal hypotheses to characterise of targets. A total of 833 in-house preclinical toxicity studies relating to 416 compounds reported to be active (pXC50 ≥ 5.5) against a panel of 96 selected targets of interest for potential off-target non desired effects were meta-analysed, aggregating the data in tissue-target pairs. The primary outcome was the odds ratio (OR) of the number of animals with observed events (any morphology, any severity) in treated and control groups in the tissue analysed. This led to a total of 2139 meta-analyses producing a total of 364 statistically significant associations (random effects model), 121 after adjusting by multiple comparison bias. The results show the utility of the proposed approach to leverage historical corporate data and may offer a vehicle for researchers to share, aggregate and analyse their preclinical toxicological data in precompetitive environments.
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Affiliation(s)
- Jordi Munoz-Muriedas
- Computational Toxicology, Data and Computational Sciences, GlaxoSmithKline, London, United Kingdom
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16
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Ganmaa D, Enkhmaa D, Baatar T, Uyanga B, Gantsetseg G, Helde TT, McElrath TF, Cantonwine DE, Bradwin G, Falk RT, Hoover RN, Troisi R. Maternal Pregnancy Hormone Concentrations in Countries with Very Low and High Breast Cancer Risk. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E823. [PMID: 32012981 PMCID: PMC7037832 DOI: 10.3390/ijerph17030823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/07/2020] [Accepted: 01/20/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Breast cancer rates in Asia are much lower than in Europe and North America. Within Asia, rates are lower in Mongolia than in neighboring countries. Variation in pregnancy exposure to endogenous hormone concentrations may explain the differences, but data are lacking. METHODS We measured maternal serum progesterone, prolactin, estradiol and estrone concentrations in the second half of pregnancy in a cross-sectional study of urban (n = 143-194 depending on the analyte) and rural (n = 150-193) Mongolian women, and U.S. women from Boston (n = 66-204). Medical records provided information on maternal and perinatal factors. Geometric mean hormones were estimated from standard linear models with the log-hormone as the dependent variable and country as the independent variable adjusted for maternal and gestational age at blood draw. RESULTS Mean concentrations of prolactin (5722 vs. 4648 uIU/mL; p < 0.0001) and estradiol (17.7 vs. 13.6 ng/mL; p < 0.0001) were greater in Mongolian than U.S. women, while progesterone (147 vs. 201 ng/mL; p < 0.0001) was lower. Mean hormone concentrations were similar in rural and urban Mongolian women. Results were generally similar, with additional adjustment for gravidity, parity, height, body mass index at blood draw, education and alcohol use during pregnancy, and when stratified by offspring sex or parity. CONCLUSIONS Mongolian women had greater concentrations of prolactin and estrogen and lower concentrations of progesterone than U.S. women, while hormone concentrations were similar in rural and urban Mongolian pregnancies. IMPACT These data do not support the hypothesis that estrogen concentrations in pregnant women are lower in Mongolian compared with Caucasian women.
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Affiliation(s)
- Davaasambuu Ganmaa
- Channing Division Network of Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School and Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA;
- Mongolian Health Initiative, Ulaanbaatar 13312, Mongolia; (B.U.); (G.G.)
| | - Davaasambuu Enkhmaa
- Maternal and Child Health Research Center, Ulaanbaatar 16060, Mongolia; (D.E.); (T.B.)
| | - Tsedmaa Baatar
- Maternal and Child Health Research Center, Ulaanbaatar 16060, Mongolia; (D.E.); (T.B.)
| | - Buyanjargal Uyanga
- Mongolian Health Initiative, Ulaanbaatar 13312, Mongolia; (B.U.); (G.G.)
| | - Garmaa Gantsetseg
- Mongolian Health Initiative, Ulaanbaatar 13312, Mongolia; (B.U.); (G.G.)
| | - Thomas T. Helde
- Information Management Services, Inc., Rockville, MD 20850, USA;
| | - Thomas F. McElrath
- Harvard Medical School, Department of Obstetrics and Gynecology, Brigham and Women’s Hospital, Boston, MA 02115, USA; (T.F.M.); (D.E.C.)
| | - David E. Cantonwine
- Harvard Medical School, Department of Obstetrics and Gynecology, Brigham and Women’s Hospital, Boston, MA 02115, USA; (T.F.M.); (D.E.C.)
| | - Gary Bradwin
- Clinical and Epidemiologic Research Laboratory, Boston Children’s Hospital, Boston, MA 02115, USA;
| | - Roni T. Falk
- Epidemiology and Biostatistics Program, Division of Epidemiology and Genetics, National Cancer Institute, Rockville, MD 20850, USA; (R.T.F.); (R.N.H.)
| | - Robert N. Hoover
- Epidemiology and Biostatistics Program, Division of Epidemiology and Genetics, National Cancer Institute, Rockville, MD 20850, USA; (R.T.F.); (R.N.H.)
| | - Rebecca Troisi
- Epidemiology and Biostatistics Program, Division of Epidemiology and Genetics, National Cancer Institute, Rockville, MD 20850, USA; (R.T.F.); (R.N.H.)
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17
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Padilla P, Izquierdo M, Martínez-Trancón M, Parejo JC, Rabasco A, Salazar J, Padilla JÁ. Polymorphisms of α-lactoalbumin, β-lactoglobulin and prolactin genes are highly associated with milk composition traits in Spanish Merino sheep. Livest Sci 2018. [DOI: 10.1016/j.livsci.2018.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Mol P, Kannegundla U, Dey G, Gopalakrishnan L, Dammalli M, Kumar M, Patil AH, Basavaraju M, Rao A, Ramesha KP, Prasad TSK. Bovine Milk Comparative Proteome Analysis from Early, Mid, and Late Lactation in the Cattle Breed, Malnad Gidda (Bos indicus). OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2018; 22:223-235. [PMID: 29389253 DOI: 10.1089/omi.2017.0162] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Bovine milk is important for both veterinary medicine and human nutrition. Understanding the bovine milk proteome at different stages of lactation has therefore broad significance for integrative biology and clinical medicine as well. Indeed, different lactation stages have marked influence on the milk yield, milk constituents, and nourishment of the neonates. We performed a comparative proteome analysis of the bovine milk obtained at different stages of lactation from the Indian indigenous cattle Malnad Gidda (Bos indicus), a widely available breed. The milk differential proteome during the lactation stages in B. indicus has not been investigated to date. Using high-resolution mass spectrometry-based quantitative proteomics of the bovine whey proteins at early, mid, and late lactation stages, we identified a total of 564 proteins, out of which 403 proteins were found to be differentially abundant at different lactation stages. As is expected of any body fluid proteome, 51% of the proteins identified in the milk were found to have signal peptides. Gene ontology analyses were carried out to categorize proteins altered across different lactation stages based on biological process and molecular function, which enabled us to correlate their significance in each lactation stage. We also investigated the potential pathways enriched in different lactation stages using bioinformatics pathway analysis tools. To the best of our knowledge, this study represents the first and largest inventory of milk proteins identified to date for an Indian cattle breed. We believe that the current study broadly informs both veterinary omics research and the emerging field of nutriproteomics during lactation stages.
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Affiliation(s)
- Praseeda Mol
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,2 Amrita School of Biotechnology , Amrita Vishwa Vidyapeetham, Kollam, India
| | | | - Gourav Dey
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,4 Centre for Systems Biology and Molecular Medicine, Yenepoya (Deemed to be University) , Mangalore, India .,5 Manipal Academy of Higher Education , Manipal, Karnataka, India
| | - Lathika Gopalakrishnan
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,4 Centre for Systems Biology and Molecular Medicine, Yenepoya (Deemed to be University) , Mangalore, India .,5 Manipal Academy of Higher Education , Manipal, Karnataka, India
| | - Manjunath Dammalli
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,6 Department of Biotechnology, Siddaganga Institute of Technology , Tumkur, India
| | - Manish Kumar
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,5 Manipal Academy of Higher Education , Manipal, Karnataka, India
| | - Arun H Patil
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,4 Centre for Systems Biology and Molecular Medicine, Yenepoya (Deemed to be University) , Mangalore, India .,7 School of Biotechnology, KIIT University , Bhubaneswar, India
| | | | - Akhila Rao
- 3 National Dairy Research Institute , Bangalore, India
| | | | - Thottethodi Subrahmanya Keshava Prasad
- 1 Institute of Bioinformatics , International Technology Park, Bangalore, India .,4 Centre for Systems Biology and Molecular Medicine, Yenepoya (Deemed to be University) , Mangalore, India
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19
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El-Eshmawy MM, Elkhamisy EM, Elsayed E, Kamal S. Impact of Gender on the Association between Low Serum Prolactin and Left Ventricular Mass in Subjects with Prediabetes. Diabetes Metab J 2017; 41:195-204. [PMID: 28657234 PMCID: PMC5489500 DOI: 10.4093/dmj.2017.41.3.195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 01/20/2017] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Low circulating prolactin hormone was associated with increased risk for type 2 diabetes mellitus. An inverse association of serum prolactin with cardiac remodeling was also previously suggested. Thus, the first question arises whether low serum prolactin is associated with adverse cardiac remodeling in subjects with prediabetes and if so what the impact of gender is? Second, could serum prolactin be considered a predictor of cardiac morbidity in those subjects? This study was conducted to assess prolactin level variations in relation to echocardiographic indices of cardiac remodeling among adult men and women with prediabetes. METHODS This cross sectional study enrolled 80 subjects with prediabetic; 40 men and 40 women. Anthropometric measurements, plasma glucose, lipid profile, homeostasis model assessment of insulin resistance, white blood cells count, prolactin and echocardiography were assessed. RESULTS Prolactin was significantly lower in men than in women with prediabetes. Left ventricular mass (LVM) was significantly higher in men than in women with prediabetes. The proportion of left ventricular hypertrophy (LVH) in men with prediabetes was 45% compared with 22.5% in women (P=0.03). We also found inverse independent associations of serum prolactin with LVM and LVH in men, but not in women. CONCLUSION In prediabetes, physiologically low serum prolactin is an independent predictor of increased LVM and LVH in adult men, but not in women. Prolactin may be a potential diagnostic biomarker for cardiac remodeling in adult men with prediabetes.
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Affiliation(s)
- Mervat M El-Eshmawy
- Department of Internal Medicine, Mansoura Specialized Medical Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt.
| | - Enas M Elkhamisy
- Department of Internal Medicine, Mansoura Specialized Medical Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Eman Elsayed
- Department of Clinical Pathology, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Shaheer Kamal
- Department of Cardiology, Mansoura Specialized Medical Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt
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20
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Ceacero F, García AJ, Landete-Castillejos T, Komárková M, Hidalgo F, Serrano MP, Gallego L. The Many Axes of Deer Lactation. J Mammary Gland Biol Neoplasia 2016; 21:123-129. [PMID: 27744517 DOI: 10.1007/s10911-016-9363-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 10/09/2016] [Indexed: 01/22/2023] Open
Abstract
In undomesticated animals information about the production and composition of milk over time is still scarce. In general, for most mammals it is known that milk composition changes across lactation, is different for male and female offspring, and even that marsupials, such as kangaroos, can simultaneously produce milk of different compositions for young of different ages. Such parallel milk production of differing compositions has not yet been studied in single-offspring placental mammals, but may help to explain behavioural processes like allosuckling (feeding the young of other adults) and lateralized suckling preferences. In this study we analysed the production and composition of milk in red deer throughout the lactation period and now confirm for the first time that there are axial differences present. The front teats, which are the favoured suckling positions of the deer's offspring, produce milk with a greater protein-to-fat ratio. Also, from the beginning of lactation the yield is greater on the left side, the side preferred by calves in all of the studied species, both at population and individual level. The links between milk production and calf behaviour in deer deserve further study.
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Affiliation(s)
- Francisco Ceacero
- Department of Animal Science and Food Processing, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcka 129, Prague 6 - Suchdol, 165 21, Czech Republic.
| | - Andrés J García
- Sección de Recursos Cinegéticos y Ganaderos, Instituto de Desarrollo Regional (IDR), Campus Universitario s/n, 02071, Albacete, Spain
- Departamento de Ciencia y Tecnología Agroforestal y Genética, ETSIA, Universidad de Castilla-La Mancha (UCLM), Campus Universitario s/n, 02071, Albacete, Spain
- Instituto de Investigación en Recursos Cinegéticos (IREC). Consejo Superior de Investigaciones Científicas, Universidad de Castilla-La Mancha - Junta de Comunidades de Castilla-La Mancha (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071, Ciudad Real, Spain
| | - Tomás Landete-Castillejos
- Sección de Recursos Cinegéticos y Ganaderos, Instituto de Desarrollo Regional (IDR), Campus Universitario s/n, 02071, Albacete, Spain
- Departamento de Ciencia y Tecnología Agroforestal y Genética, ETSIA, Universidad de Castilla-La Mancha (UCLM), Campus Universitario s/n, 02071, Albacete, Spain
- Instituto de Investigación en Recursos Cinegéticos (IREC). Consejo Superior de Investigaciones Científicas, Universidad de Castilla-La Mancha - Junta de Comunidades de Castilla-La Mancha (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071, Ciudad Real, Spain
| | - Martina Komárková
- Department of Ethology, Institute of Animal Science, Přátelství 815, 104 01, Praha - Uhříněves, Czech Republic
| | - Francisco Hidalgo
- Sección de Recursos Cinegéticos y Ganaderos, Instituto de Desarrollo Regional (IDR), Campus Universitario s/n, 02071, Albacete, Spain
- Departamento de Ciencia y Tecnología Agroforestal y Genética, ETSIA, Universidad de Castilla-La Mancha (UCLM), Campus Universitario s/n, 02071, Albacete, Spain
| | - Martina P Serrano
- Sección de Recursos Cinegéticos y Ganaderos, Instituto de Desarrollo Regional (IDR), Campus Universitario s/n, 02071, Albacete, Spain
- Departamento de Ciencia y Tecnología Agroforestal y Genética, ETSIA, Universidad de Castilla-La Mancha (UCLM), Campus Universitario s/n, 02071, Albacete, Spain
- Instituto de Investigación en Recursos Cinegéticos (IREC). Consejo Superior de Investigaciones Científicas, Universidad de Castilla-La Mancha - Junta de Comunidades de Castilla-La Mancha (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071, Ciudad Real, Spain
| | - Laureano Gallego
- Sección de Recursos Cinegéticos y Ganaderos, Instituto de Desarrollo Regional (IDR), Campus Universitario s/n, 02071, Albacete, Spain
- Departamento de Ciencia y Tecnología Agroforestal y Genética, ETSIA, Universidad de Castilla-La Mancha (UCLM), Campus Universitario s/n, 02071, Albacete, Spain
- Instituto de Investigación en Recursos Cinegéticos (IREC). Consejo Superior de Investigaciones Científicas, Universidad de Castilla-La Mancha - Junta de Comunidades de Castilla-La Mancha (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071, Ciudad Real, Spain
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21
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Rieanrakwong D, Laoharatchatathanin T, Terashima R, Yonezawa T, Kurusu S, Hasegawa Y, Kawaminami M. Prolactin Suppression of Gonadotropin-Releasing Hormone Initiation of Mammary Gland Involution in Female Rats. Endocrinology 2016; 157:2750-8. [PMID: 27175971 DOI: 10.1210/en.2016-1180] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
It has been demonstrated that mammary gland involution after lactation is initiated by accumulation of milk in alveoli after weaning. Here, we report that involution is also dependent on mammary GnRH expression that is suppressed by PRL during lactation. Reduction of plasma prolactin (PRL) by the withdrawal of suckling stimuli increased GnRH and annexin A5 (ANXA5) expression in the mammary tissues after lactation with augmentation of epithelial apoptosis. Intramammary injection of a GnRH antagonist suppressed ANXA5 expression and apoptosis of epithelial cells after forcible weaning at midlactation, whereas local administration of GnRH agonist (GnRHa) caused apoptosis of epithelial cells with ANXA5 augmentation in lactating rats. The latter treatment also decreased mammary weight, milk production, and casein accumulation. Mammary mast cells were strongly immunopositive for GnRH and the number increased in the mammary tissues after weaning. GnRHa was shown to be a chemoattractant for mast cells by mammary local administration of GnRHa and Boyden chamber assay. PRL suppressed the mammary expression of both ANXA5 and GnRH mRNA. It also decreased mast cell numbers in the gland after lactation. These results are the first to demonstrate that GnRH, synthesized locally in the mammary tissues, is required for mammary involution after lactation. GnRH is also suggested to introduce mast cells into the regressing mammary gland and would be in favor of tissue remodeling. The suppression of these processes by PRL is a novel physiological function of PRL.
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Affiliation(s)
- Duangjai Rieanrakwong
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Titaree Laoharatchatathanin
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Ryota Terashima
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Tomohiro Yonezawa
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Shiro Kurusu
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Yoshihisa Hasegawa
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Mitsumori Kawaminami
- Laboratories of Veterinary Physiology (D.R., T.L., R.T., T.Y., S.K., M.K.) and Experimental Animal Science (Y.H.), School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan; Laboratory of Veterinary Clinical Pathology (T.Y.), Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; and Faculty of Veterinary Medicine (D.R., T.L.), Mahanakorn University of Technology, Bangkok 10530, Thailand
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22
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Weaver SR, Prichard AP, Endres EL, Newhouse SA, Peters TL, Crump PM, Akins MS, Crenshaw TD, Bruckmaier RM, Hernandez LL. Elevation of circulating serotonin improves calcium dynamics in the peripartum dairy cow. J Endocrinol 2016; 230:105-23. [PMID: 27390301 DOI: 10.1530/joe-16-0038] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 05/23/2016] [Indexed: 02/04/2023]
Abstract
Hypocalcemia is a metabolic disorder that affects dairy cows during the transition from pregnancy to lactation. Twelve multiparous Holstein cows and twelve multiparous Jersey cows were intravenously infused daily for approximately 7 days prepartum with either saline or 1.0mg/kg bodyweight of the immediate precursor to serotonin synthesis, 5hydroxy-l-tryptophan (5-HTP). On infusion days, blood was collected before, after, and at 2, 4, and 8h postinfusion. Blood and urine were collected daily before the infusion period, for 14 days postpartum and on day 30 postpartum. Milk was collected daily during the postpartum period. Feed intake and milk yield were unaffected by 5-HTP infusion postpartum. Cows infused with 5-HTP had elevated circulating serotonin concentrations prepartum. Infusion with 5-HTP induced a transient hypocalcemia in Jersey cows prepartum, but not in any other treatment. Holstein cows infused with saline had the highest milk calcium on the day of and day after parturition. Postpartum, circulating total calcium tended to be elevated, and urine deoxypyridinoline (DPD) concentrations were elevated in Holstein cows infused with 5-HTP. Overall, Jerseys had higher urine DPD concentrations postpartum when compared with Holsteins. Taken together, these data warrant further investigation of the potential therapeutic benefit of 5-HTP administration prepartum for prevention of hypocalcemia. Further research should focus on delineation of mechanisms associated with 5-HTP infusion that control calcium homeostasis during the peripartum period in Holstein and Jersey cows.
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Affiliation(s)
- Samantha R Weaver
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Austin P Prichard
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Elizabeth L Endres
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Stefanie A Newhouse
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Tonia L Peters
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Peter M Crump
- Department of Animal SciencesUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Matthew S Akins
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Marshfield, Wisconsin, USA
| | - Thomas D Crenshaw
- Department of Animal SciencesUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Rupert M Bruckmaier
- Department of Veterinary PhysiologyVetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Laura L Hernandez
- Department of Dairy ScienceUniversity of Wisconsin-Madison, Madison, Wisconsin, USA
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23
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Zhao D, Ma G, Zhang X, He Y, Li M, Han X, Fu L, Dong XY, Nagy T, Zhao Q, Fu L, Dong JT. Zinc Finger Homeodomain Factor Zfhx3 Is Essential for Mammary Lactogenic Differentiation by Maintaining Prolactin Signaling Activity. J Biol Chem 2016; 291:12809-12820. [PMID: 27129249 DOI: 10.1074/jbc.m116.719377] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Indexed: 12/13/2022] Open
Abstract
The zinc finger homeobox 3 (ZFHX3, also named ATBF1 for AT motif binding factor 1) is a transcription factor that suppresses prostatic carcinogenesis and induces neuronal differentiation. It also interacts with estrogen receptor α to inhibit cell proliferation and regulate pubertal mammary gland development in mice. In the present study, we examined whether and how Zfhx3 regulates lactogenic differentiation in mouse mammary glands. At different stages of mammary gland development, Zfhx3 protein was expressed at varying levels, with the highest level at lactation. In the HC11 mouse mammary epithelial cell line, an in vitro model of lactogenesis, knockdown of Zfhx3 attenuated prolactin-induced β-casein expression and morphological changes, indicators of lactogenic differentiation. In mouse mammary tissue, knock-out of Zfhx3 interrupted lactogenesis, resulting in underdeveloped glands with much smaller and fewer alveoli, reduced β-casein expression, accumulation of large cytoplasmic lipid droplets in luminal cells after parturition, and failure in lactation. Mechanistically, Zfhx3 maintained the expression of Prlr (prolactin receptor) and Prlr-Jak2-Stat5 signaling activity, whereas knockdown and knock-out of Zfhx3 in HC11 cells and mammary tissues, respectively, decreased Prlr expression, Stat5 phosphorylation, and the expression of Prlr-Jak2-Stat5 target genes. These findings indicate that Zfhx3 plays an essential role in proper lactogenic development in mammary glands, at least in part by maintaining Prlr expression and Prlr-Jak2-Stat5 signaling activity.
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Affiliation(s)
- Dan Zhao
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Gui Ma
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xiaolin Zhang
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yuan He
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Mei Li
- the Ningbo Institute of Medical Sciences, Ningbo 315020, China
| | - Xueying Han
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Liya Fu
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xue-Yuan Dong
- the Department of Hematology and Medical Oncology, School of Medicine, Winship Cancer Institute, Emory University, Atlanta, Georgia 30322
| | - Tamas Nagy
- the Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, Georgia 30602, and
| | - Qiang Zhao
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Li Fu
- the Cancer Hospital of Tianjin Medical University, Tianjin 300060, China
| | - Jin-Tang Dong
- From the Department of Genetics and Cell Biology, College of Life Sciences, Nankai University, Tianjin 300071, China,; the Department of Hematology and Medical Oncology, School of Medicine, Winship Cancer Institute, Emory University, Atlanta, Georgia 30322,.
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24
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Binder AK, Kosak JP, Janhardhan KS, Moser G, Eling TE, Korach KS. Expression of Human NSAID Activated Gene 1 in Mice Leads to Altered Mammary Gland Differentiation and Impaired Lactation. PLoS One 2016; 11:e0146518. [PMID: 26745373 PMCID: PMC4706436 DOI: 10.1371/journal.pone.0146518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 12/19/2015] [Indexed: 12/22/2022] Open
Abstract
Transgenic mice expressing human non-steroidal anti-inflammatory drug activated gene 1 (NAG-1) have less adipose tissue, improved insulin sensitivity, lower insulin levels and are resistant to dietary induced obesity. The hNAG-1 expressing mice are more metabolically active with a higher energy expenditure. This study investigates female reproduction in the hNAG-1 transgenic mice and finds the female mice are fertile but have reduced pup survival after birth. Examination of the mammary glands in these mice suggests that hNAG-1 expressing mice have altered mammary epithelial development during pregnancy, including reduced occupancy of the fat pad and increased apoptosis via TUNEL positive cells on lactation day 2. Pups nursing from hNAG-1 expressing dams have reduced milk spots compared to pups nursing from WT dams. When CD-1 pups were cross-fostered with hNAG-1 or WT dams; reduced milk volume was observed in pups nursing from hNAG-1 dams compared to pups nursing from WT dams in a lactation challenge study. Milk was isolated from WT and hNAG-1 dams, and the milk was found to have secreted NAG-1 protein (approximately 25 ng/mL) from hNAG-1 dams. The WT dams had no detectable hNAG-1 in the milk. A decrease in non-esterified free fatty acids in the milk of hNAG-1 dams was observed. Altered milk composition suggests that the pups were receiving inadequate nutrients during perinatal development. To examine this hypothesis serum was isolated from pups and clinical chemistry points were measured. Male and female pups nursing from hNAG-1 dams had reduced serum triglyceride concentrations. Microarray analysis revealed that genes involved in lipid metabolism are differentially expressed in hNAG-1 mammary glands. Furthermore, the expression of Cidea/CIDEA that has been shown to regulate milk lipid secretion in the mammary gland was reduced in hNAG-1 mammary glands. This study suggests that expression of hNAG-1 in mice leads to impaired lactation and reduces pup survival due to altered milk quality and quantity.
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Affiliation(s)
- April K. Binder
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
| | - Justin P. Kosak
- Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
| | - Kyathanahalli S. Janhardhan
- Integrated Laboratory Systems Incorporated, Research Triangle Park, North Carolina, United States of America
| | - Glenda Moser
- Integrated Laboratory Systems Incorporated, Research Triangle Park, North Carolina, United States of America
| | - Thomas E. Eling
- Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
| | - Kenneth S. Korach
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
- * E-mail:
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25
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Chiba T, Kimura S, Takahashi K, Morimoto Y, Sanbe A, Ueda H, Kudo K. Serotonin suppresses β-casein expression via inhibition of the signal transducer and activator of transcription 5 (STAT5) protein phosphorylation in human mammary epithelial cells MCF-12A. Biol Pharm Bull 2015; 37:1336-40. [PMID: 25087955 DOI: 10.1248/bpb.b14-00273] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Serotonin (5-hydroxytryptamine; 5-HT) has an important physiological role in controlling lactation, namely, milk volume homeostasis, within mammary glands. The objectives of this study were to evaluate whether exogenous 5-HT can suppress β-casein expression, a differentiation marker, produced in human mammary epithelial cells, and to determine whether 5-HT can attenuate β-casein signaling via the prolactin (PRL) receptor (PRLr) and Janus kinase 2/signal transducer and activator of transcription 5 (STAT5) pathway. PRL treatment increased the mRNA level of β-casein in the MCF-12A human mammary epithelial cell line, and the highest level occurred at days 7 and 14 of culture. In contrast, PRLr expression was not affected significantly by PRL treatment. PRL treatment in MCF-12A cells increased levels of β-casein and phosphorylated STAT5 (pSTAT5) proteins in a concentration-dependent manner, with a slight increase of STAT5 protein. β-Casein expression was inhibited by 0.1 mM 5-HT in a time-dependent manner. Additionally, treatment with 0.1 mM 5-HT for 72 h decreased protein levels of β-casein and pSTAT5, with a slight decrease in STAT5 levels. These results suggest that exogenous 5-HT can inhibit STAT5 phosphorylation, resulting in a decrease in β-Casein expression. In conclusion, we showed that exogenous 5-HT decreased β-casein expression in MCF-12A human mammary epithelial cells, and that 5-HT was responsible for inhibiting phosphorylation of STAT5, resulting in a decline in lactational function.
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Affiliation(s)
- Takeshi Chiba
- Department of Clinical Pharmaceutics and Pharmacy Practice, School of Pharmacy, Iwate Medical University
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26
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Villa-Osaba A, Gahete MD, Córdoba-Chacón J, de Lecea L, Pozo-Salas AI, Delgado-Lista FJ, Álvarez-Benito M, López-Miranda J, Luque RM, Castaño JP. Obesity alters gene expression for GH/IGF-I axis in mouse mammary fat pads: differential role of cortistatin and somatostatin. PLoS One 2015; 10:e0120955. [PMID: 25806796 PMCID: PMC4373840 DOI: 10.1371/journal.pone.0120955] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 02/10/2015] [Indexed: 12/03/2022] Open
Abstract
Locally produced growth hormone (GH) and IGF-I are key factors in the regulation of mammary gland (MG) development and may be important in breast cancer development/progression. Somatostatin (SST) and cortistatin (CORT) regulate GH/IGF-I axis at various levels, but their role in regulating GH/IGF-I in MGs remains unknown. Since obesity alters the expression of these systems in different tissues and is associated to MG (patho) physiology, we sought to investigate the role of SST/CORT in regulating GH/IGF-I system in the MGs of lean and obese mice. Therefore, we analyzed GH/IGF-I as well as SST/CORT and ghrelin systems expression in the mammary fat pads (MFPs) of SST- or CORT-knockout (KO) mice and their respective littermate-controls fed a low-fat (LF) or a high-fat (HF) diet for 16 wks. Our results demonstrate that the majority of the components of GH/IGF-I, SST/CORT and ghrelin systems are locally expressed in mouse MFP. Expression of elements of the GH/IGF-I axis was significantly increased in MFPs of HF-fed control mice while lack of endogenous SST partially suppressed, and lack of CORT completely blunted, the up-regulation observed in obese WT-controls. Since SST/CORT are known to exert an inhibitory role on the GH/IGFI axis, the increase in SST/CORT-receptor sst2 expression in MFPs of HF-fed CORT- and SST-KOs together with an elevation on circulating SST in CORT-KOs could explain the differences observed. These results offer new information on the factors (GH/IGF-I axis) involved in the endocrine/metabolic dysregulation of MFPs in obesity, and suggest that CORT is not a mere SST sibling in regulating MG physiology.
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Affiliation(s)
- Alicia Villa-Osaba
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
| | - Manuel D. Gahete
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
| | - José Córdoba-Chacón
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
- Department of Medicine, University of Illinois at Chicago and Jesse Brown Veteran Affairs Medical Center, Research and Development Division, Chicago, Illinois, United States of America
| | - Luis de Lecea
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Ana I. Pozo-Salas
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
| | - Francisco Javier Delgado-Lista
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- Lipids and Atherosclerosis Unit, Department of Medicine, Reina Sofía University Hospital, Córdoba, Spain
| | - Marina Álvarez-Benito
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- Mammary Gland Unit, Reina Sofía University Hospital, Córdoba, Spain
| | - José López-Miranda
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
- Lipids and Atherosclerosis Unit, Department of Medicine, Reina Sofía University Hospital, Córdoba, Spain
| | - Raúl M. Luque
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
| | - Justo P. Castaño
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Reina Sofía University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
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27
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Tikk K, Sookthai D, Johnson T, Dossus L, Clavel-Chapelon F, Tjønneland A, Olsen A, Overvad K, Baglietto L, Rinaldi S, Romieu I, Boeing H, Trichopoulou A, Lagiou P, Trichopoulos D, Masala G, Agnoli C, Tumino R, Sacerdote C, Mattiello A, Buckland G, Sánchez S, Molina-Montes E, Amiano P, Castaño JMH, Barricarte A, Bueno-de-Mesquita HB, Monninkhof EM, Onland-Moret NC, Idahl A, Lundin E, Weiderpass E, Lund E, Waaseth M, Khaw KT, Key TJ, Travis RC, Gunter MJ, Riboli E, Kaaks R. Prolactin determinants in healthy women: A large cross-sectional study within the EPIC cohort. Cancer Epidemiol Biomarkers Prev 2014; 23:2532-42. [PMID: 25143360 DOI: 10.1158/1055-9965.epi-14-0613] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Experimental and epidemiologic data suggest that higher circulating prolactin is associated with breast cancer risk; however, how various risk factors for breast cancer influence prolactin levels in healthy women is not clear. METHODS We analyzed cross-sectional associations between several suggested reproductive and lifestyle risk factors for breast cancer and circulating prolactin among pre- and postmenopausal women, taking into account the use of current postmenopausal hormone therapy, among 2,560 controls from a breast cancer nested case-control study within the EPIC cohort. RESULTS Adjusted geometric mean prolactin levels were significantly higher among premenopausal women, and among postmenopausal women using hormone therapy compared with nonusers (8.2, 7.0, and 6.3 ng/mL, respectively; Pcat = <0.0001). Furthermore, prolactin levels were significantly higher among users of combined estrogen-progestin hormone therapy compared with users of estrogen-alone hormone therapy (6.66 vs. 5.90 ng/mL; Pcat = 0.001). Prolactin levels were lower among parous women compared with nulliparous women (8.61 vs. 10.95 ng/mL; Pcat = 0.0002, premenopausal women); the magnitude of this difference depended on the number of full-term pregnancies (22.1% lower, ≥3 vs. 1 pregnancy, Ptrend = 0.01). Results for parity were similar but lower in magnitude among postmenopausal women. Prolactin did not vary by other studied factors, with the exception of lower levels among postmenopausal smokers compared with never smokers. CONCLUSIONS Our study shows that current hormone therapy use, especially the use of combined hormone therapy, is associated with higher circulating prolactin levels in postmenopausal women, and confirms prior findings of lower circulating prolactin in parous women. IMPACT Our study extends the knowledge linking various breast cancer risk factors with circulating prolactin.
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Affiliation(s)
- Kaja Tikk
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Disorn Sookthai
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Laure Dossus
- Nutrition, Hormones, and Women's Health Team, Centre for Research in Epidemiology and Population Health (CESP), INSERM U1018, Villejuif, France. Univ Paris Sud, UMRS 1018, Villejuif, France. IGR, Villejuif, France
| | - Françoise Clavel-Chapelon
- Nutrition, Hormones, and Women's Health Team, Centre for Research in Epidemiology and Population Health (CESP), INSERM U1018, Villejuif, France. Univ Paris Sud, UMRS 1018, Villejuif, France. IGR, Villejuif, France
| | | | - Anja Olsen
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Kim Overvad
- Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Laura Baglietto
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia. Centre for Molecular, Environmental, Genetic, and Analytic Epidemiology, The University of Melbourne, Melbourne, Australia
| | - Sabina Rinaldi
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Isabelle Romieu
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Heiner Boeing
- Department of Epidemiology, German Institute of Human Nutrition (DIfE), Nuthetal, Germany
| | - Antonia Trichopoulou
- Department of Hygiene, Epidemiology, and Medical Statistics, University of Athens Medical School, Athens, Greece. Hellenic Health Foundation, Athens, Greece
| | - Pagona Lagiou
- Department of Hygiene, Epidemiology, and Medical Statistics, University of Athens Medical School, Athens, Greece. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts. Bureau of Epidemiologic Research, Academy of Athens, Athens, Greece
| | - Dimitrios Trichopoulos
- Hellenic Health Foundation, Athens, Greece. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts. Bureau of Epidemiologic Research, Academy of Athens, Athens, Greece
| | - Giovanna Masala
- Molecular and Nutritional Epidemiology Unit, Cancer Research and Prevention Institute-ISPO, Florence, Italy
| | - Claudia Agnoli
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Rosario Tumino
- Cancer Registry and Histopathology Unit, "Civic-M.P.Arezzo" Hospital ASP, Ragusa, Italy
| | - Carlotta Sacerdote
- Center for Cancer Prevention (CPO-Piemonte), Torino, Italy. Human Genetic Foundation (HuGeF), Torino, Italy
| | - Amalia Mattiello
- Department of Clinical and Experimental Medicine, Federico II University, Naples, Italy
| | - Genevieve Buckland
- Unit of Nutrition, Environment, and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO-IDIBELL), Barcelona, Spain
| | | | - Esther Molina-Montes
- Escuela Andaluza de Salud Pública, Instituto de Investigación Biosanitario de Granada, Granada, Spain. Consortium for Biomedical Research in Epidemiology and Public Health (CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Pilar Amiano
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. Basque Regional Health Department, Public Health Division of Gipuzkoa, San Sebastian, Spain
| | - José María Huerta Castaño
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. Department of Epidemiology, Murcia Regional Health Authority, Murcia, Spain
| | - Aurelio Barricarte
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. Navarre Public Health Institute, Pamplona, Spain
| | - H Bas Bueno-de-Mesquita
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands. Department of Gastroenterology and Hepatology, University Medical Centre, Utrecht, the Netherlands. School of Public Health, Imperial College, London, United Kingdom
| | - Evelyn M Monninkhof
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, the Netherlands
| | - N Charlotte Onland-Moret
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, the Netherlands
| | - Annika Idahl
- Department of Clinical Sciences, Obstetrics and Gynaecology, Faculty of Medicine, Umeå University, Umeå, Sweden
| | - Eva Lundin
- Department of Medical Biosciences, Pathology, Faculty of Medicine, Umeå University, Umeå, Sweden
| | - Elisabete Weiderpass
- Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway. Department of Research, Cancer Registry of Norway, Oslo, Norway. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. Samfundet Folkhälsan, Helsinki, Finland
| | - Eiliv Lund
- Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Marit Waaseth
- Department of Pharmacy, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Kay-Tee Khaw
- School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Timothy J Key
- Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom
| | - Ruth C Travis
- Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom
| | - Marc J Gunter
- School of Public Health, Imperial College, London, United Kingdom
| | - Elio Riboli
- School of Public Health, Imperial College, London, United Kingdom
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Inancli SS, Usluogullari A, Ustu Y, Caner S, Tam AA, Ersoy R, Cakir B. Effect of cabergoline on insulin sensitivity, inflammation, and carotid intima media thickness in patients with prolactinoma. Endocrine 2013; 44:193-9. [PMID: 23233277 DOI: 10.1007/s12020-012-9857-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 12/04/2012] [Indexed: 11/29/2022]
Abstract
The aim of this study was to evaluate the effect of Cabergoline on insulin sensitivity, inflammatory markers, and carotid intima media thickness in prolactinoma patients. Twenty-one female, newly diagnosed patients with prolactinoma were included in the study. None of the patients were treated previously. Cabergoline was given as treatment, starting with 0.5 mg/day and tapered necessarily. Blood samples were taken for prolactin, highly sensitive C-reactive protein, homocysteine, total cholesterol, low density lipoprotein (LDL) cholesterol, fasting glucose, insulin, and HOMA (homeostasis model assessment of insulin resistance) score was calculated, prior to and 6 months after starting treatment. The body mass index (BMI) was measured and carotid intima media thickness (CIMT) was evaluated for each patient prior to and 6 months after the treatment. The prolactin levels and LDL decreased significantly after cabergoline treatment. Insulin sensitivity improved independently from the decrease in prolactin levels and BMI. The significant decrease in homocysteine and hs-CRP was not related with the decrease in prolactin levels. The significant decrease in CIMT was independent from the decrease in prolactin levels, HOMA score, and BMI. Our data suggest that cabergoline treatment causes an improvement in insulin sensitivity and inflammatory markers and causes a decrease in CIMT independent from the decrease in prolactin, LDL cholesterol, and BMI. We conclude that short term cabergoline treatment can improve endothelial function independently from the changes in metabolic disturbances and inflammatory markers.
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Affiliation(s)
- Serap Soytac Inancli
- Department of Endocrinology and Metabolism, School of Medicine, Near East University, Nicosia, Cyprus.
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29
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Speroni L, Whitt GS, Xylas J, Quinn KP, Jondeau-Cabaton A, Barnes C, Georgakoudi I, Sonnenschein C, Soto AM. Hormonal regulation of epithelial organization in a three-dimensional breast tissue culture model. Tissue Eng Part C Methods 2013; 20:42-51. [PMID: 23675751 DOI: 10.1089/ten.tec.2013.0054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The establishment of hormone target breast cells in the 1970's resulted in suitable models for the study of hormone control of cell proliferation and gene expression using two-dimensional (2D) cultures. However, to study mammogenesis and breast tumor development in vitro, cells must be able to organize in three-dimensional (3D) structures like in the tissue. We now report the development of a hormone-sensitive 3D culture model for the study of mammogenesis and neoplastic development. Hormone-sensitive T47D breast cancer cells respond to estradiol in a dose-dependent manner by forming complex epithelial structures. Treatment with the synthetic progestagen promegestone, in the presence of estradiol, results in flat epithelial structures that display cytoplasmic projections, a phenomenon reported to precede side-branching. Additionally, as in the mammary gland, treatment with prolactin in the presence of estradiol induces budding structures. These changes in epithelial organization are accompanied by collagen remodeling. Collagen is the major acellular component of the breast stroma and an important player in tumor development and progression. Quantitative analysis of second harmonic generation of collagen fibers revealed that collagen density was more variable surrounding budding and irregularly shaped structures when compared to more regular structures; suggesting that fiber organization in the former is more anisotropic than in the latter. In sum, this new 3D model recapitulates morphogenetic events modulated by mammogenic hormones in the breast, and is suitable for the evaluation of therapeutic agents.
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Affiliation(s)
- Lucia Speroni
- 1 Cell, Molecular, and Developmental Biology Program, Department of Anatomy and Cellular Biology, Tufts University School of Medicine , Boston, Massachusetts
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30
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Gamo Y, Bernard A, Mitchell SE, Hambly C, Al Jothery A, Vaanholt LM, Król E, Speakman JR. Limits to sustained energy intake. XVI. Body temperature and physical activity of female mice during pregnancy. J Exp Biol 2013; 216:2328-38. [DOI: 10.1242/jeb.078410] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
SUMMARY
Lactation is the most energy-demanding phase of mammalian reproduction, and lactation performance may be affected by events during pregnancy. For example, food intake may be limited in late pregnancy by competition for space in the abdomen between the alimentary tract and fetuses. Hence, females may need to compensate their energy budgets during pregnancy by reducing activity and lowering body temperature. We explored the relationships between energy intake, body mass, body temperature and physical activity throughout pregnancy in the MF1 mouse. Food intake and body mass of 26 females were recorded daily throughout pregnancy. Body temperature and physical activity were monitored every minute for 23 h a day by implanted transmitters. Body temperature and physical activity declined as pregnancy advanced, while energy intake and body mass increased. Compared with a pre-mating baseline period, mice increased energy intake by 56% in late pregnancy. Although body temperature declined as pregnancy progressed, this served mostly to reverse an increase between baseline and early pregnancy. Reduced physical activity may compensate the energy budget of pregnant mice but body temperature changes do not. Over the last 3 days of pregnancy, food intake declined. Individual variation in energy intake in the last phase of pregnancy was positively related to litter size at birth. As there was no association between the increase in body mass and the decline in intake, we suggest the decline was not caused by competition for abdominal space. These data suggest overall reproductive performance is probably not constrained by events during pregnancy.
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Affiliation(s)
- Yuko Gamo
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Amelie Bernard
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Sharon E. Mitchell
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Catherine Hambly
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Aqeel Al Jothery
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Lobke M. Vaanholt
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Elzbieta Król
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
- Mammal Research Institute PAS, 17-230 Białowieża, Poland
| | - John R. Speakman
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
- Institute of Genetics and Developmental Biology, State Key Laboratory of Molecular Developmental Biology, Chinese Academy of Sciences, Beichen Xi Lu, Chaoyang, Beijing 100101, People's Republic of China
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31
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Duah OA, Monney KA, Hambly C, Król E, Speakman JR. Limits to sustained energy intake. XVII. Lactation performance in MF1 mice is not programmed by fetal number during pregnancy. J Exp Biol 2013; 216:2339-48. [DOI: 10.1242/jeb.078428] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
SUMMARY
Several studies have suggested that lactation performance may be programmed by the number of fetuses during pregnancy, whereas other studies indicate that processes during lactation are more important. As gestation litter size and litter size in lactation are usually strongly correlated, separating the roles of pregnancy and lactation in lactation performance is difficult. To break this link, we experimentally manipulated litter size of MF1 mice to five or 16 pups per litter by cross-fostering. Litter size and mass at birth were recorded on day 1 of lactation prior to litter size manipulation. Maternal body mass and food intake, litter size and litter mass were measured daily throughout. After weaning, the potential differential utilisation of body tissues of the mothers was investigated. Relationships between maternal mass and food intake, including asymptotic daily food intake at peak lactation, offspring traits and other maternal parameters suggested that the number of fetuses the females had carried during pregnancy had no effect on lactation performance. Litter mass increases depended only on maternal food intake, which was highly variable between individuals, but was independent of fetal litter size. The sizes of key organs and tissues like the liver and alimentary tract were not related to maximal food intake at peak lactation or to fetal litter size, but the masses of the pelage, mammary glands and retroperitoneal fat pad were. These data suggest that while growth of the mammary glands and associated structures may be initiated in gestation, and vary in relation to the number of placentas, the ultimate sizes and activities of the tissues depends primarily on factors during lactation.
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Affiliation(s)
- Osei A. Duah
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Kweku A. Monney
- School of Biological Sciences, Department of Entomology and Wildlife, University of Cape Coast, Cape Coast, Ghana
| | - Catherine Hambly
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
| | - Elzbieta Król
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
- Mammal Research Institute PAS, 17-230 Białowieża, Poland
| | - John R. Speakman
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 2TZ, UK
- Institute of Genetics and Developmental Biology, State Key Laboratory of Molecular Developmental Biology, Chinese Academy of Sciences, Beichen Xi Lu, Chaoyang, Beijing 100101, People's Republic of China
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32
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Vélez JM, Chamorro GA, Calzada CC, Zuñiga CA, Vélez JJ, Ocharán E. A study of prevention and regression of cardiac hypertrophy with a prolactin inhibitor in a biological model of ventricular hypertrophy caused by aorto caval fistulae in rat. Cardiovasc Pathol 2013; 22:357-67. [PMID: 23478013 DOI: 10.1016/j.carpath.2013.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 01/11/2013] [Accepted: 01/11/2013] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The possibility of decreasing or reverting left ventricular hypertrophy and, therefore, cardiac hypertrophy (CH) is an important medical issue. The aim of the present study was to evaluate these two possibilities with a 3-week daily dose of captopril, losartan, or bromocriptine in a preventive or corrective model. METHODS After aorto caval fistulae (ACF) surgery on adult male Wistar rats to induce CH, animals were assigned to the preventive protocol (drug treatment began immediately after surgery) or corrective protocol (hypertrophy was allowed to develop before drug treatment). After treatments, isoproterenol was administered to half of the animals to further induce CH. The groups included the passive control, the sham-operated animals, those with ACF surgery but without drug treatment, and the 3-week treatments with captopril, losartan, or the low or high dose of bromocriptine. RESULTS Three treatments, with captopril, losartan, or the high dose of bromocriptine, significantly impeded/reverted an increase in CH-related parameters in the preventive/corrective model compared to the surgically treated group without drug treatment. The same effect was found after isoproterenol administration. The present results show an avoidance/reversion of CH with these three treatments. Better results were found with the angiotensin converting enzyme inhibitor (captopril) than with the prolactin inhibitor (bromocriptine). CONCLUSIONS Treatments with captopril, losartan, and the high dose of bromocriptine were effective in preventing/reversing the manifestation of CH in the preventive/corrective rat models. Further studies are needed to identify the initial mediator, the key component, and the molecular events involved in the pathogenesis of CH.
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Affiliation(s)
- Juan M Vélez
- Intracellular Signaling Laboratory, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México
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33
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Reuwer AQ, Nowak-Sliwinska P, Mans LA, van der Loos CM, von der Thüsen JH, Twickler MTB, Spek CA, Goffin V, Griffioen AW, Borensztajn KS. Functional consequences of prolactin signalling in endothelial cells: a potential link with angiogenesis in pathophysiology? J Cell Mol Med 2013; 16:2035-48. [PMID: 22128761 PMCID: PMC3822974 DOI: 10.1111/j.1582-4934.2011.01499.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Prolactin is best known as the polypeptide anterior pituitary hormone, which regulates the development of the mammary gland. However, it became clear over the last decade that prolactin contributes to a broad range of pathologies, including breast cancer. Prolactin is also involved in angiogenesis via the release of pro-angiogenic factors by leukocytes and epithelial cells. However, whether prolactin also influences endothelial cells, and whether there are functional consequences of prolactin-induced signalling in the perspective of angiogenesis, remains so far elusive. In the present study, we show that prolactin induces phosphorylation of ERK1/2 and STAT5 and induces tube formation of endothelial cells on Matrigel. These effects are blocked by a specific prolactin receptor antagonist, del1-9-G129R-hPRL. Moreover, in an in vivo model of the chorioallantoic membrane of the chicken embryo, prolactin enhances vessel density and the tortuosity of the vasculature and pillar formation, which are hallmarks of intussusceptive angiogenesis. Interestingly, while prolactin has only little effect on endothelial cell proliferation, it markedly stimulates endothelial cell migration. Again, migration was reverted by del1-9-G129R-hPRL, indicating a direct effect of prolactin on its receptor. Immunohistochemistry and spectral imaging revealed that the prolactin receptor is present in the microvasculature of human breast carcinoma tissue. Altogether, these results suggest that prolactin may directly stimulate angiogenesis, which could be one of the mechanisms by which prolactin contributes to breast cancer progression, thereby providing a potential tool for intervention.
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Affiliation(s)
- Anne Q Reuwer
- Department of Vascular Medicine, Academic Medical Center, Amsterdam, The Netherlands.
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34
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Thomas E, Lee-Pullen T, Rigby P, Hartmann P, Xu J, Zeps N. Receptor activator of NF-κB ligand promotes proliferation of a putative mammary stem cell unique to the lactating epithelium. Stem Cells 2012; 30:1255-64. [PMID: 22593019 DOI: 10.1002/stem.1092] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In mice, CD49f(hi) mammary stem cells (MaSCs) asymmetrically divide to generate CD49f(+) committed progenitor cells that differentiate into CD49f(-) phenotypes of the milk-secreting tissue at the onset of pregnancy. We show CD49f(+) primary mammary epithelial cells (PMECs) isolated from lactating tissue uniquely respond to pregnancy-associated hormones (PAH) compared with CD49f(+) cells from nonlactating tissue. Differentiation of CD49f(+) PMEC in extracellular matrix produces CD49f(-) luminal cells to form differentiated alveoli. The PAH prolactin and placental lactogen specifically stimulate division of CD49f(-) luminal cells, while receptor activator of nuclear factor (NF)-κB ligand (RANKL) specifically stimulates division of basal CD49f(+) cells. In nondifferentiating conditions, we observed a greater proportion of multipotent self-renewing cells, and RANKL treatment activated the RANK pathway in these cultures. Furthermore, we observed the deposition of calcium nodules in a proportion of these cells. These data imply that a MaSC unique to the lactating breast exists in humans, which generates progeny with discrete lineages and distinct response to PAH.
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Affiliation(s)
- Elizabeth Thomas
- School of Biomedical, Biomolecular and Chemical Sciences, Subiaco, Western Australia, Australia.
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35
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Fiorillo AA, Medler TR, Feeney YB, Wetz SM, Tommerdahl KL, Clevenger CV. The prolactin receptor transactivation domain is associated with steroid hormone receptor expression and malignant progression of breast cancer. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 182:217-33. [PMID: 23159947 DOI: 10.1016/j.ajpath.2012.09.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 08/29/2012] [Accepted: 09/25/2012] [Indexed: 11/27/2022]
Abstract
The polypeptide hormone prolactin (PRL) stimulates breast epithelial cell growth, differentiation, and motility through its cognate receptor, PRLr. PRLr is expressed in most breast cancers; however, its exact role remains elusive. Our laboratory previously described a novel mode of PRLr signaling in which Stat5a-mediated transcription is regulated through ligand-induced phosphorylation of the PRLr transactivation domain (TAD). Herein, we used a PRLr transactivation-deficient mutant (PRLrYDmut) to identify novel TAD-specific target genes. Microarray analysis identified 120 PRL-induced genes up-regulated by wild type but not PRLrYDmut. Compared with control, PRLr expression significantly induced expression of approximately 4700 PRL-induced genes, whereas PRLrYDmut ablated induction of all but 19 of these genes. Ingenuity pathway analysis found that the PRLr TAD most profoundly affected networks involving cancer and proliferation. In support of this, PRLrYDmut expression reduced anchorage-dependent and anchorage-independent growth. In addition, pathway analysis identified a link between the PRLr TAD and the estrogen and progesterone receptors (ERα/PR). Although neither ERα nor PR was identified as a PRL target gene, a TAD mutation significantly impaired ERα/PR expression and estrogen responsiveness. TMA analysis revealed a marked increase in nuclear, but not cytoplasmic, PRLr TAD phosphorylation as a function of neoplastic progression. We propose that PRLr TAD phosphorylation contributes to breast cancer pathogenesis, in part through regulation of ERα and PR, and has potential utility as a biomarker in this disease.
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Affiliation(s)
- Alyson A Fiorillo
- Women's Cancer Research Program, Robert H. Lurie Comprehensive Cancer Center, and the Department of Pathology, Northwestern University, Chicago, Illinois 60611, USA
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36
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Trott JF, Schennink A, Petrie WK, Manjarin R, VanKlompenberg MK, Hovey RC. TRIENNIAL LACTATION SYMPOSIUM: Prolactin: The multifaceted potentiator of mammary growth and function1,2. J Anim Sci 2012; 90:1674-86. [DOI: 10.2527/jas.2011-4682] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- J. F. Trott
- Department of Animal Science, University of California, Davis 95616
| | - A. Schennink
- Department of Animal Science, University of California, Davis 95616
| | - W. K. Petrie
- Department of Animal Science, University of California, Davis 95616
| | - R. Manjarin
- Department of Animal Science, University of California, Davis 95616
| | | | - R. C. Hovey
- Department of Animal Science, University of California, Davis 95616
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Rider L, Diakonova M. Adapter protein SH2B1beta binds filamin A to regulate prolactin-dependent cytoskeletal reorganization and cell motility. Mol Endocrinol 2011; 25:1231-43. [PMID: 21566085 DOI: 10.1210/me.2011-0056] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Prolactin (PRL) regulates cytoskeletal rearrangement and cell motility. PRL-activated Janus tyrosine kinase 2 (JAK2) phosphorylates the p21-activated serine-threonine kinase (PAK)1 and the Src homology 2 (SH2) domain-containing adapter protein SH2B1β. SH2B1β is an actin-binding protein that cross-links actin filaments, whereas PAK1 regulates the actin cytoskeleton by different mechanisms, including direct phosphorylation of the actin-binding protein filamin A (FLNa). Here, we have used a FLNa-deficient human melanoma cell line (M2) and its derivative line (A7) that stably expresses FLNa to demonstrate that SH2B1β and FLNa are required for maximal PRL-dependent cell ruffling. We have found that in addition to two actin-binding domains, SH2B1β has a FLNa-binding domain (amino acids 200-260) that binds directly to repeats 17-23 of FLNa. The SH2B1β-FLNa interaction participates in PRL-dependent actin rearrangement. We also show that phosphorylation of the three tyrosines of PAK1 by JAK2, as well as the presence of FLNa, play a role in PRL-dependent cell ruffling. Finally, we show that the actin- and FLNa-binding-deficient mutant of SH2B1β (SH2B1β 3Δ) abolished PRL-dependent ruffling and PRL-dependent cell migration when expressed along with PAK1 Y3F (JAK2 tyrosyl-phosphorylation-deficient mutant). Together, these data provide insight into a novel mechanism of PRL-stimulated regulation of the actin cytoskeleton and cell motility via JAK2 signaling through FLNa, PAK1, and SH2B1β. We propose a model for PRL-dependent regulation of the actin cytoskeleton that integrates our findings with previous studies.
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Affiliation(s)
- Leah Rider
- Department of Biological Sciences, University of Toledo, Toledo, Ohio 43606-3390, USA
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38
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Jara LJ, Medina G, Saavedra MA, Vera-Lastra O, Navarro C. Prolactin and autoimmunity. Clin Rev Allergy Immunol 2011; 2:389-95. [PMID: 20031611 DOI: 10.1161/circgenetics.109.853572] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The relationship between prolactin and the immune system has been demonstrated in the last two decades, opening new windows in the field of the immunoendocrinology. Prolactin has an important role in the innate and adaptive immune response. Increased prolactin levels have been described in autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, Sjögren syndrome, and systemic sclerosis among others. Hyperprolactinemia is associated with active disease and organ involvement in systemic lupus erythematosus. Therefore, prolactin is an integral member of the immunoneuroendocrinology network and seems to have a role in pathogenesis of autoimmune diseases. Few controlled studies of dopamine agonist treatment in humans with autoimmune disease have been conducted only in systemic lupus erythematosus patients, which support the potential efficacy of such agents even during pregnancy and postpartum. Further studies are necessary to elucidate the mechanisms by which prolactin affects autoimmune disease activity, increase the inflammatory mechanism, and determine the role of anti-prolactinemic drugs to regulate the immune/inflammatory process.
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Affiliation(s)
- Luis J Jara
- Direction of Education and Research, Hospital de Especialidades Centro Médico La Raza, IMSS, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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39
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Schraenen A, Lemaire K, de Faudeur G, Hendrickx N, Granvik M, Van Lommel L, Mallet J, Vodjdani G, Gilon P, Binart N, in’t Veld P, Schuit F. Placental lactogens induce serotonin biosynthesis in a subset of mouse beta cells during pregnancy. Diabetologia 2010; 53:2589-99. [PMID: 20938637 PMCID: PMC2974930 DOI: 10.1007/s00125-010-1913-7] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 08/17/2010] [Indexed: 12/04/2022]
Abstract
AIMS/HYPOTHESIS Upregulation of the functional beta cell mass is required to match the physiological demands of mother and fetus during pregnancy. This increase is dependent on placental lactogens (PLs) and prolactin receptors, but the mechanisms underlying these events are only partially understood. We studied the mRNA expression profile of mouse islets during pregnancy to gain a better insight into these changes. METHODS RNA expression was measured ex vivo via microarrays and quantitative RT-PCR. In vivo observations were extended by in vitro models in which ovine PL was added to cultured mouse islets and MIN6 cells. RESULTS mRNA encoding both isoforms of the rate-limiting enzyme of serotonin biosynthesis, tryptophan hydroxylase (TPH), i.e. Tph1 and Tph2, were strongly induced (fold change 25- to 200-fold) during pregnancy. This induction was mimicked by exposing islets or MIN6 cells to ovine PLs for 24 h and was dependent on janus kinase 2 and signal transducer and activator of transcription 5. Parallel to Tph1 mRNA and protein induction, islet serotonin content increased to a peak level that was 200-fold higher than basal. Interestingly, only a subpopulation of the beta cells was serotonin-positive in vitro and in vivo. The stored serotonin pool in pregnant islets and PL-treated MIN6 cells was rapidly released (turnover once every 2 h). CONCLUSIONS/INTERPRETATION A very strong lactogen-dependent upregulation of serotonin biosynthesis occurs in a subpopulation of mouse islet beta cells during pregnancy. Since the newly formed serotonin is rapidly released, this lactogen-induced beta cell function may serve local or endocrine tasks, the nature of which remains to be identified.
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Affiliation(s)
- A. Schraenen
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - K. Lemaire
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - G. de Faudeur
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - N. Hendrickx
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - M. Granvik
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - L. Van Lommel
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
| | - J. Mallet
- Centre de Recherche de l’Institut du Cerveau et de la Moelle épinière, CNRS UMR-7225, INSERM UMRS-975, Université Pierre et Marie Curie, Paris, France
| | - G. Vodjdani
- Centre de Recherche de l’Institut du Cerveau et de la Moelle épinière, CNRS UMR-7225, INSERM UMRS-975, Université Pierre et Marie Curie, Paris, France
| | - P. Gilon
- Unit of Endocrinology and Metabolism, Faculty of Medicine, Université de Louvain, 1000 Brussels, Belgium
| | - N. Binart
- Inserm U845, Paris, France
- Faculté de Médecine, Université Paris Descartes, Paris, France
| | - P. in’t Veld
- Department of Pathology, Vrije Universiteit Brussel, Jette, Belgium
| | - F. Schuit
- Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit Leuven, O&N1, Herestraat 49 bus 901, 3000 Leuven, Belgium
- Center for Computational Systems Biology, SymBioSys, Katholieke Universiteit Leuven, Leuven, Belgium
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40
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Nilsson J, Helou K, Kovács A, Bendahl PO, Bjursell G, Fernö M, Carlsson P, Kannius-Janson M. Nuclear Janus-activated kinase 2/nuclear factor 1-C2 suppresses tumorigenesis and epithelial-to-mesenchymal transition by repressing Forkhead box F1. Cancer Res 2010; 70:2020-9. [PMID: 20145151 DOI: 10.1158/0008-5472.can-09-1677] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Progression to metastasis is the proximal cause of most cancer-related mortality. Yet much remains to be understood about what determines the spread of tumor cells. This paper describes a novel pathway in breast cancer that regulates epithelial-to-mesenchymal transition (EMT), motility, and invasiveness. We identify two transcription factors, nuclear factor 1-C2 (NF1-C2) and Forkhead box F1 (FoxF1), downstream of prolactin/nuclear Janus-activated kinase 2, with opposite effects on these processes. We show that NF1-C2 is lost during mammary tumor progression and is almost invariably absent from lymph node metastases. NF1-C2 levels in primary tumors correlate with better patient survival. Manipulation of NF1-C2 levels by expression of a stabilized version or using small interfering RNA showed that NF1-C2 counteracts EMT, motility, invasiveness, and tumor growth. FoxF1 was found to be a direct repressed target of NF1-C2. We provide the first evidence for a role of FoxF1 in cancer and in the regulation of EMT in cells of epithelial origin. Overexpression of FoxF1 was associated with a mesenchymal phenotype, increased invasiveness in vitro, and enhanced growth of breast carcinoma xenografts in nude mice. The relevance of these findings is strengthened by the correlation between FoxF1 expression and a mesenchymal phenoype in breast cancer cell isolates, consistent with the interpretation that FoxF1 promotes invasion and metastasis.
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Affiliation(s)
- Jeanette Nilsson
- Department of Cell and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
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41
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Wang D, Zhang Y, Liu Y, Yang Y. Karyotype and single nucleotide polymorphism of the prolactin gene in milking bucks. Small Rumin Res 2009. [DOI: 10.1016/j.smallrumres.2009.09.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Hernandez LL, Limesand SW, Collier JL, Horseman ND, Collier RJ. The bovine mammary gland expresses multiple functional isoforms of serotonin receptors. J Endocrinol 2009; 203:123-31. [PMID: 19654143 PMCID: PMC2741409 DOI: 10.1677/joe-09-0187] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recent studies in dairy cows have demonstrated that serotonergic ligands affect milk yield and composition. Correspondingly, serotonin (5-HT) has been demonstrated to be an important local regulator of lactational homeostasis and involution in mouse and human mammary cells. We determined the mRNA expression of bovine 5-HT receptor (HTR) subtypes in bovine mammary tissue (BMT) and used pharmacological agents to evaluate functional activities of 5-HT receptors. The mRNAs for five receptor isoforms (HTR1B, 2A, 2B, 4, and 7) were identified by conventional real-time (RT)-PCR, RT quantitative PCR, and in situ hybridization in BMT. In addition to luminal mammary epithelial cell expression, HTR4 was expressed in myoepithelium, and HTR1B, 2A, and 2B were expressed in small mammary blood vessels. Serotonin suppressed milk protein mRNA expression (alpha-lactalbumin and beta-casein mRNA) in lactogen-treated primary bovine mammary epithelial cell (BMEC) cultures. To probe the functional activities of individual receptors, caspase-3 activity and expression of alpha-lactalbumin and beta-casein were measured. Both SB22489 (1B antagonist) and ritanserin (2A antagonist) increased caspase-3 activity. Expression of alpha-lactalbumin and beta-casein mRNA levels in BMEC were stimulated by low concentrations of SB224289, ritanserin, or pimozide. These results demonstrate that there are multiple 5-HT receptor isoforms in the bovine mammary gland, and point to profound differences between serotonergic systems of the bovine mammary gland and the human and mouse mammary glands. Whereas human and mouse mammary epithelial cells express predominately the protein for the 5-HT(7) receptor, cow mammary epithelium expresses multiple receptors that have overlapping, but not identical, functional activities.
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Affiliation(s)
- Laura L Hernandez
- Department of Animal SciencesUniversity of ArizonaTucson, Arizona, 85721USA
- Department of Molecular and Cellular PhysiologyUniversity of CincinnatiCincinnati, Ohio, 45267USA
| | - Sean W Limesand
- Department of Animal SciencesUniversity of ArizonaTucson, Arizona, 85721USA
| | - Jayne L Collier
- Department of Animal SciencesUniversity of ArizonaTucson, Arizona, 85721USA
| | - Nelson D Horseman
- Department of Molecular and Cellular PhysiologyUniversity of CincinnatiCincinnati, Ohio, 45267USA
| | - Robert J Collier
- Department of Animal SciencesUniversity of ArizonaTucson, Arizona, 85721USA
- (Correspondence should be addressed to R J Collier who is now at William Parker Agricultural Research Center, University of Arizona, 1650 Limberlost #2019, Tucson, Arizona 85719, USA; )
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43
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Prolactin fragmentation by trophoblastic matrix metalloproteinases as a possible contributor to peripartum cardiomyopathy and pre-eclampsia. Med Hypotheses 2009; 74:348-52. [PMID: 19748190 DOI: 10.1016/j.mehy.2009.08.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Accepted: 08/17/2009] [Indexed: 11/21/2022]
Abstract
Although peripartum cardiomyopathy (PPCM) is a rare disease, it has very serious consequences for both mother and child. No single cause has been held responsible for the pathogenesis. Recent studies have indicated that increased proteolytic cathepsin D activity in cardiomyocytes results in16kDa prolactin fragments with anti-angiogenic and apoptotic properties, which may contribute to the development of PPCM. In support of these findings, lowering full-length prolactin production by bromocriptine therapy has been reported to prevent impairment of cardiac function. PPCM is associated with an increased co-existence of pre-eclampsia, however, a causal relationship has been disputed. We hypothesize that the pathophysiology of PPCM and pre-eclampsia share the same molecular pathway: increased activity of trophoblastic matrix metalloproteinases at the feto-maternal interface may aggravate proteolysis of full-length prolactin, and subsequently the formed 16kDa prolactin fragments may contribute to deterioration of PPCM and pre-eclampsia. Therefore, we argue that it may be worthwhile to explore wether prolactin inhibition is not only beneficial for PPCM patients, but also for the much more prevalent pre-eclamptic women.
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44
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Horigan KC, Trott JF, Barndollar AS, Scudder JM, Blauwiekel RM, Hovey RC. Hormone interactions confer specific proliferative and histomorphogenic responses in the porcine mammary gland. Domest Anim Endocrinol 2009; 37:124-38. [PMID: 19497700 DOI: 10.1016/j.domaniend.2009.04.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2009] [Revised: 04/23/2009] [Accepted: 04/24/2009] [Indexed: 11/30/2022]
Abstract
Mammary gland growth and morphogenesis are regulated by interactions between hormones as much as by their individual actions. The effect of these interactions on the mammary gland phenotype in species other than rodents is relatively undefined. We investigated the individual and combined effects of estrogen (E), progestin (P), and prolactin (PRL) on mammary gland development in gilts. Pigs were shown to have a ductal-lobular parenchyma that underwent hormone-stimulated progression of terminal ductal lobular unit (TDLU) morphogenesis similar to that in the human breast. Ovariectomy plus hypoprolactinemia abolished mammary gland growth. Estrogen alone stimulated mammary epithelial cell proliferation, terminal bud formation, and the progression of TDLU1 structures to a TDLU2 morphotype. Maximal epithelial cell proliferation, DNA content, parenchymal area, and morphological development of the porcine mammary gland were realized following treatment with E+PRL or E+P+PRL. In contrast, P alone did not promote epithelial cell proliferation, TDLU type progression, mammary gland growth, or morphogenesis. These data indicate that interactions between E and PRL are the main determinants of growth and morphogenesis in the porcine mammary gland.
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Affiliation(s)
- K C Horigan
- Lactation and Mammary Gland Biology Group, Department of Animal Science, University of Vermont, Burlington, VT 05405, USA
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Peters GA, Seachrist DD, Keri RA, Sen GC. The double-stranded RNA-binding protein, PACT, is required for postnatal anterior pituitary proliferation. Proc Natl Acad Sci U S A 2009; 106:10696-701. [PMID: 19541653 PMCID: PMC2705576 DOI: 10.1073/pnas.0900735106] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Indexed: 01/15/2023] Open
Abstract
PACT is a double-stranded RNA-binding protein that also binds and activates the latent protein kinase, PKR, which plays a major role in cellular antiviral defense in mammals. For evaluating PACT's contribution to the innate immune system, Pact(-/-) mice have been generated; these mice exhibit notable developmental abnormalities including microtia, with craniofacial, ear, and hearing defects. Here we report that, in addition, Pact(-/-) mice had smaller body size and fertility defects, both of which were caused by defective pituitary functions. Pact(-/-) mice exhibited anterior pituitary lobe (AL) hypoplasia, which developed postnatally, when the second phase of pituitary expansion occurs. Among the 5 cell types in AL, the numbers of corticotrophs, gonadotrophs, and somatotrophs were equally decreased in Pact(-/-) mice with a greater impact on lactotrophs and a lesser impact on thyrotrophs. PACT mRNA and protein were highly expressed in the pituitary of wild-type (Wt) mice during the postnatal wave of AL proliferation, the same period in which the hypoplasia developed in Pact(-/-) mice. During this time, the pituitaries of Pact(-/-) mice did not exhibit significantly increased apoptosis compared with Wt mice but showed a decrease in cell proliferation. The inhibition of cell proliferation observed in vivo could be recapitulated in vitro in GH3 somato/lactotroph and LbetaT2 gonadotroph cell lines; knockdown of PACT expression with siRNA diminished the rate of proliferation of these cells. Our study revealed a physiologically significant role for PACT in cell proliferation and an essential role of a dsRNA-binding protein in mammalian pituitary expansion.
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Affiliation(s)
- Gregory A. Peters
- Department of Molecular Genetics, The Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195; and
| | - Darcie D. Seachrist
- Department of Pharmacology and Division of General Medical Sciences—Oncology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
| | - Ruth A. Keri
- Department of Pharmacology and Division of General Medical Sciences—Oncology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
| | - Ganes C. Sen
- Department of Molecular Genetics, The Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195; and
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Fang F, Rycyzyn MA, Clevenger CV. Role of c-Myb during prolactin-induced signal transducer and activator of transcription 5a signaling in breast cancer cells. Endocrinology 2009; 150:1597-606. [PMID: 19036881 PMCID: PMC2659289 DOI: 10.1210/en.2008-1079] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Accepted: 11/14/2008] [Indexed: 01/17/2023]
Abstract
Implicated in the pathogenesis of breast cancer, prolactin (PRL) mediates its function in part through the prolactin receptor (PRLr)-associated Janus kinase 2 (Jak2)/signal transducer and activator of transcription 5 (Stat5) signaling complex. To delineate the mechanisms of Stat5a regulation in breast cancer, transcription factor-transcription factor (TF-TF) array analysis was employed to identify associated transcriptional regulators. These analyses revealed a PRL-inducible association of Stat5a with the transcription factor and protooncogene c-Myb. Confirmatory co-immunoprecipitation studies using lysates from both T47D and MCF7 breast cancer cells revealed a PRL-inducible association between these transcription factors. Ectopic expression of c-Myb enhanced the PRL-induced expression from both composite and synthetic Stat5a-responsive luciferase reporters. Chromatin immunoprecipitation assays also revealed a PRL-inducible association between c-Myb and endogenous Stat5a-responsive CISH promoter, which was associated with an enhanced expression of CISH gene product at the RNA and protein levels. Small interfering RNA-mediated c-Myb knockdown impaired the PRL-induced mRNA expression of five Stat5-responsive genes. DNA binding-defective mutants of c-Myb, incapable of activating expression from a c-Myb-responsive reporter, maintained their ability to enhance a Stat5a-responsive reporter. At a cellular level, ectopic expression of c-Myb resulted in an increase in T47D proliferation. Taken together, these results indicate that c-Myb potentiates Stat5a-driven gene expression, possibly functioning as a Stat5a coactivator, in human breast cancer.
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Affiliation(s)
- Feng Fang
- Department of Pathology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611, USA
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47
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Lipogenesis impaired in periparturient rats exposed to altered gravity is independent of prolactin and glucocorticoid secretion. Eur J Appl Physiol 2008; 104:847-58. [DOI: 10.1007/s00421-008-0840-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2008] [Indexed: 10/21/2022]
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48
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Muraoka-Cook RS, Sandahl M, Hunter D, Miraglia L, Earp HS. Prolactin and ErbB4/HER4 signaling interact via Janus kinase 2 to induce mammary epithelial cell gene expression differentiation. Mol Endocrinol 2008; 22:2307-21. [PMID: 18653779 DOI: 10.1210/me.2008-0055] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Differentiation of mammary epithelium in vivo requires signaling through prolactin and ErbB4/HER4-dependent mechanisms. Although stimulation of either the prolactin receptor or ErbB4/HER4 results in activation of the transcription factor signal transducer and activator of transcription 5A (STAT5A) and induction of lactogenic differentiation, how these pathways intersect is unknown. We show herein that prolactin signaling in breast cells cooperates with and is substantially enhanced by the receptor tyrosine kinase ErbB4/HER4. Prolactin and the ErbB4/HER4 ligand heparin-binding epidermal growth factor each induced STAT5A tyrosine phosphorylation and nuclear translocation; each pathway required the intracellular tyrosine kinase Janus kinase 2 (JAK2). We found that full prolactin-mediated STAT5A activation and binding to the endogenous beta-casein promoter required ErbB4/HER4 but did not require ErbB1/epidermal growth factor receptor. For example, prolactin-induced STAT5A activity was markedly diminished in cells overexpressing kinase inactive HER4, in cells transfected with small interfering RNAs to specifically knock down endogenous ErbB4/HER4 expression and in cells treated with a small molecule inhibitor that targets ErbB4 kinase. Interestingly, prolactin caused ErbB4/HER4 tyrosine phosphorylation in a JAK2 kinase-dependent manner. Finally, prolactin receptor, ErbB4/HER4, and JAK2 were coimmunoprecipitated from prolactin-treated but not untreated cells. These results suggest that prolactin signaling engages the ErbB4 pathway via JAK2 and that ErbB4 provides an important component of STAT5A-dependent lactogenic differentiation; this pathway integration may help explain the similar deficit in mammary development observed in gene-targeted mice deficient in prolactin receptor, JAK2, ErbB4, or STAT5A.
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Affiliation(s)
- Rebecca S Muraoka-Cook
- University of North Carolina Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, 102 Mason Farm Road, Chapel Hill, North Carolina 27599, USA
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49
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Muraoka-Cook RS, Feng SM, Strunk KE, Earp HS. ErbB4/HER4: role in mammary gland development, differentiation and growth inhibition. J Mammary Gland Biol Neoplasia 2008; 13:235-46. [PMID: 18437540 PMCID: PMC3325098 DOI: 10.1007/s10911-008-9080-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Accepted: 04/02/2008] [Indexed: 01/19/2023] Open
Abstract
The ErbB receptor tyrosine kinase family has often been associated with increased growth of breast epithelial cells, as well as malignant transformation and progression. In contrast, ErbB4/HER4 exhibits unique attributes from a two step proteolytic cleavage which releases an 80 kilodalton, nuclear localizing, tyrosine kinase to a signal transduction mechanism that slows growth and stimulates differentiation of breast cells. This review provides an overview of ErbB4/HER4 in growth and differentiation of the mammary epithelium, including its physiologic role in development, the contrasting growth inhibition/tumor suppression and growth acceleration of distinct ErbB4/HER4 isoforms and a description of the unique cell cycle regulated pattern of nuclear HER4 ubiquitination and destruction.
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Affiliation(s)
- Rebecca S. Muraoka-Cook
- UNC-Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, 450 West Ave CB 7295, Chapel Hill, NC 27599, USA
- Department of Genetics, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Shu-Mang Feng
- UNC-Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, 450 West Ave CB 7295, Chapel Hill, NC 27599, USA
| | - Karen E. Strunk
- UNC-Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, 450 West Ave CB 7295, Chapel Hill, NC 27599, USA
| | - H. Shelton Earp
- UNC-Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, 450 West Ave CB 7295, Chapel Hill, NC 27599, USA
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
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50
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Bratthauer GL, Strauss BL, Barner R. Reversed Expression of the JAK/STAT Pathway Related Proteins Prolactin Receptor and STAT5a in Normal and Abnormal Breast Epithelial Cells. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2008; 1:7-14. [PMID: 21655368 PMCID: PMC3091403 DOI: 10.4137/bcbcr.s549] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The JAK/STAT pathway is important for cellular metabolism. One component, STAT5a, is activated in the breast upon prolactin to prolactin receptor (PRLR) binding facilitating the transcription of genes involved in lobule development. STAT5a was previously found to be expressed in most normal breast epithelial cells but not in many in situ or invasive carcinomas except secretory carcinomas which retain STAT5a expression. This report examines the JAK/STAT pathway in the breast through the detection of PRLR and STAT5a. Fifty breast tissues, including benign secretory change, microglandular adenosis, usual and atypical hyperplasia and in situ and invasive ductal carcinoma both usual and secretory, were obtained from the files of the Armed Forces Institute of Pathology. Sections were immunostained with antibodies to PRLR and STAT5a. PRLR was minimally detected on the surface of a few normal breast epithelial cells whereas STAT5a was greatly expressed in over 80% of normal cell nuclei. PRLR was also minimally detected in secretory carcinomas expressing STAT5a. However, the opposite pattern was seen in breast carcinomas lacking STAT5a expression. PRLR was abundantly expressed in these cells. This reversed expression may indicate a JAK/STAT pathway disturbance that could play a role in the initiation or maintenance of an abnormal breast phenotype.
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Affiliation(s)
- Gary L Bratthauer
- Department of Gynecologic and Breast Pathology, Armed Forces Institute of Pathology, Washington
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