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El Fouikar S, Van Acker N, Héliès V, Frenois FX, Giton F, Gayrard V, Dauwe Y, Mselli-Lakhal L, Rousseau-Ralliard D, Fournier N, Léandri R, Gatimel N. Folliculogenesis and steroidogenesis alterations after chronic exposure to a human-relevant mixture of environmental toxicants spare the ovarian reserve in the rabbit model. J Ovarian Res 2024; 17:134. [PMID: 38943138 PMCID: PMC11214233 DOI: 10.1186/s13048-024-01457-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 06/16/2024] [Indexed: 07/01/2024] Open
Abstract
BACKGROUND Industrial progress has led to the omnipresence of chemicals in the environment of the general population, including reproductive-aged and pregnant women. The reproductive function of females is a well-known target of endocrine-disrupting chemicals. This function holds biological processes that are decisive for the fertility of women themselves and for the health of future generations. However, insufficient research has evaluated the risk of combined mixtures on this function. This study aimed to assess the direct impacts of a realistic exposure to eight combined environmental toxicants on the critical process of folliculogenesis. METHODS Female rabbits were exposed daily and orally to either a mixture of eight environmental toxicants (F group) or the solvent mixture (NE group, control) from 2 to 19 weeks of age. The doses were computed from previous toxicokinetic data to reproduce steady-state serum concentrations in rabbits in the range of those encountered in pregnant women. Ovarian function was evaluated through macroscopic and histological analysis of the ovaries, serum hormonal assays and analysis of the expression of steroidogenic enzymes. Cellular dynamics in the ovary were further investigated with Ki67 staining and TUNEL assays. RESULTS F rabbits grew similarly as NE rabbits but exhibited higher total and high-density lipoprotein (HDL) cholesterol levels in adulthood. They also presented a significantly elevated serum testosterone concentrations, while estradiol, progesterone, AMH and DHEA levels remained unaffected. The measurement of gonadotropins, androstenedione, pregnenolone and estrone levels yielded values below the limit of quantification. Among the 7 steroidogenic enzymes tested, an isolated higher expression of Cyp19a1 was measured in F rabbits ovaries. Those ovaries presented a significantly greater density/number of antral and atretic follicles and larger antral follicles without any changes in cellular proliferation or DNA fragmentation. No difference was found regarding the count of other follicle stages notably the primordial stage, the corpora lutea or AMH serum levels. CONCLUSION Folliculogenesis and steroidogenesis seem to be subtly altered by exposure to a human-like mixture of environmental toxicants. The antral follicle growth appears promoted by the mixture of chemicals both in their number and size, potentially explaining the increase in atretic antral follicles. Reassuringly, the ovarian reserve estimated through primordial follicles number/density and AMH is spared from any alteration. The consequences of these changes on fertility and progeny health have yet to be investigated.
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Affiliation(s)
- Sara El Fouikar
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Nathalie Van Acker
- Plateforme Imag'IN, Service d'anatomopathologie, CHU Toulouse, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France
| | - Virginie Héliès
- GenPhySE (Génétique Physiologie et Système d'Elevage), INRAE, Université de Toulouse, INPT, ENVT, Castanet-Tolosan, France
| | - François-Xavier Frenois
- Plateforme Imag'IN, Service d'anatomopathologie, CHU Toulouse, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France
| | - Frank Giton
- Pôle Biologie-Pathologie Henri Mondor, AP-HP, Inserm IMRB U955, Créteil, France
| | - Véronique Gayrard
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Yannick Dauwe
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Laila Mselli-Lakhal
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Delphine Rousseau-Ralliard
- Université Paris-Saclay, UVSQ, INRAE, Jouy-en-Josas, 78350, BREED, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, Maisons-Alfort, 94700, France
| | - Natalie Fournier
- Athérosclérose et macrophages: impact des phospholipides et des fonctions mitochondriales sur l'efflux du cholestérol, Lip(Sys) Université Paris Saclay, UFR de Pharmacie, Orsay, EA, 7357, 91400, France
- Laboratoire de Biochimie, AP-HP (Assistance Publique-Hôpitaux de Paris), Hôpital Européen Georges Pompidou, Paris, 75015, France
| | - Roger Léandri
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France.
- Médecine de la Reproduction, Hôpital Paule de Viguier, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.
| | - Nicolas Gatimel
- Médecine de la Reproduction, Hôpital Paule de Viguier, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
- DEFE (Développement Embryonnaire, Fertilité et Environnement) UMR1203 Inserm, Universités Toulouse et Montpellier, CHU Toulouse, Toulouse, France
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Martínez-Ibarra A, Cerbón M, Martínez-Razo LD, Morales-Pacheco M, Torre-Villalvazo I, Kawa S, Rodríguez-Dorantes M. Impact of DEHP exposure on female reproductive health: Insights into uterine effects. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 107:104391. [PMID: 38367918 DOI: 10.1016/j.etap.2024.104391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 02/10/2024] [Accepted: 02/13/2024] [Indexed: 02/19/2024]
Abstract
Several endocrine disrupting compounds released from plastics, including polyfluoroalkyl substances, bisphenols, flame retardants, phthalates and others, are of great concern to human health due to their high toxicity. This review discusses the effects of di-(2-ethylhexyl) phthalate (DEHP), the most common member of the phthalate family, on female reproduction. In vitro and in vivo studies link DEHP exposure to impaired hypothalamic-pituitary-ovarian s (HPO) axis function, alteration of steroid-hormone levels and dysregulation of their receptors, and changes in uterine morphophysiology. In addition, high urinary DEPH levels have been associated with several reproductive disorders in women, including endometriosis, fibromyoma, fetal growth restriction and pregnancy loss. These data suggest that DEHP may be involved in the pathophysiology of various female reproductive diseases. Therefore, exposure to these compounds should be considered a concern in clinician surveillance practices for women at reproductive age and should be regulated to protect their health and that of their progeny.
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Affiliation(s)
| | - Marco Cerbón
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico.
| | | | - Miguel Morales-Pacheco
- Laboratorio de Oncogenómica, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico
| | - Iván Torre-Villalvazo
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico
| | - Simón Kawa
- Dirección General del Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico.
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Gaspari L, Haouzi D, Gennetier A, Granes G, Soler A, Sultan C, Paris F, Hamamah S. Transgenerational Transmission of 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) Effects in Human Granulosa Cells: The Role of MicroRNAs. Int J Mol Sci 2024; 25:1144. [PMID: 38256218 PMCID: PMC10816780 DOI: 10.3390/ijms25021144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
Endocrine-disrupting chemicals (EDCs) might contribute to the increase in female-specific cancers in Western countries. 2,3,7,8-tetrachlordibenzo-p-dioxin (TCDD) is considered the "prototypical toxicant" to study EDCs' effects on reproductive health. Epigenetic regulation by small noncoding RNAs (sncRNAs), such as microRNAs (miRNA), is crucial for controlling cancer development. The aim of this study was to analyze transcriptional activity and sncRNA expression changes in the KGN cell line after acute (3 h) and chronic (72 h) exposure to 10 nM TCDD in order to determine whether sncRNAs' deregulation may contribute to transmitting TCDD effects to the subsequent cell generations (day 9 and day 14 after chronic exposure). Using Affymetrix GeneChip miRNA 4.0 arrays, 109 sncRNAs were found to be differentially expressed (fold change < -2 or >2; p-value < 0.05) between cells exposed or not (control) to TCDD for 3 h and 72 h and on day 9 and day 14 after chronic exposure. Ingenuity Pathway Analysis predicted that following the acute and chronic exposure of KGN cells, sncRNAs linked to cellular development, growth and proliferation were downregulated, and those linked to cancer promotion were upregulated on day 9 and day 14. These results indicated that TCDD-induced sncRNA dysregulation may have transgenerational cancer-promoting effects.
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Affiliation(s)
- Laura Gaspari
- Unité d’Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France; (L.G.); (C.S.)
- Centre de Référence Maladies Rares du Développement Génital, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
| | - Delphine Haouzi
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
- Département de Biologie de la Reproduction et DPI (ART/PGD), Hôpital A. de Villeneuve, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France
| | - Aurélie Gennetier
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
| | - Gaby Granes
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
| | - Alexandra Soler
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
- Global ART Innovation Network (GAIN), 34295 Montpellier, France
| | - Charles Sultan
- Unité d’Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France; (L.G.); (C.S.)
| | - Françoise Paris
- Unité d’Endocrinologie-Gynécologie Pédiatrique, Service de Pédiatrie, Hôpital Arnaud-de-Villeneuve, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France; (L.G.); (C.S.)
- Centre de Référence Maladies Rares du Développement Génital, Constitutif Sud, Hôpital Lapeyronie, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
| | - Samir Hamamah
- INSERM U 1203, Développement Embryonnaire Fertilité Environnement, Université de Montpellier, INSERM, 34295 Montpellier, France (A.S.)
- Département de Biologie de la Reproduction et DPI (ART/PGD), Hôpital A. de Villeneuve, CHU Montpellier, Université de Montpellier, 34295 Montpellier, France
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Jiang Y, Wang D, Zhang C, Jiao Y, Pu Y, Cheng R, Li C, Chen Y. Nicotinamide mononucleotide restores oxidative stress-related apoptosis of oocyte exposed to benzyl butyl phthalate in mice. Cell Prolif 2023:e13419. [PMID: 36756972 PMCID: PMC10392047 DOI: 10.1111/cpr.13419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/19/2023] [Accepted: 01/27/2023] [Indexed: 02/10/2023] Open
Abstract
Benzyl butyl phthalate (BBP) is a chemical softener and plasticizer commonly used in toys, food packaging, wallpaper, detergents and shampoos. The estrogenic actions of BBP have detrimental effects on humans and animals. In this study, the specific influence of BBP on mouse oocyte maturation was investigated using in vivo and in vitro models. The experiment first verified that BBP exposure significantly affected the rate of oocyte exclusion of the first polar body, although it did not affect germinal vesicle breakdown (GVBD) through in vitro oocyte culture system. Results of in vitro fertilization show that BBP exposure affects blastocyst rate. Subsequently, the results obtained by immunofluorescence staining technology showed that oocyte spindle organization, chromosomal arrangement and the distribution of cortical actin were disrupted by BBP exposure, and led to the failure of oocyte meiotic maturation and the subsequent early embryo development. Singe-cell transcriptome analysis found that BBP exposure altered the expression levels of 588 genes, most associated with mitochondria-related oxidative stress. Further analysis demonstrated that the detrimental effects of BBP involved the disruption of mitochondrial function and oxidative stress-induced early apoptosis. Nicotinamide mononucleotide (NMN) supplementation reduced the adverse effects of BBP. Collectively, these findings revealed a mechanism of BBP-induced toxicity on female reproduction and showed that NMN provides an effective treatment for BBP actions.
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Affiliation(s)
- Yi Jiang
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Di Wang
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Cheng Zhang
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Yangyang Jiao
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Yanan Pu
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Rong Cheng
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Chunyu Li
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China
| | - Yan Chen
- Outpatient & Emergency Management Department, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Emergency Management Department, School of Health Policy & Management, Nanjing Medical University, Nanjing, China.,Research Institute of Health Jiangsu, Nanjing Medical University, Nanjing, China
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Zhan W, Yang H, Zhang J, Chen Q. Association between co-exposure to phenols and phthalates mixture and infertility risk in women. ENVIRONMENTAL RESEARCH 2022; 215:114244. [PMID: 36058272 DOI: 10.1016/j.envres.2022.114244] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/09/2022] [Accepted: 08/29/2022] [Indexed: 05/26/2023]
Abstract
BACKGROUND Exposure to phenols and phthalates has been separately linked to increased risks of infertility in women of reproductive age. However, the combined effect of phenols and phthalates exposure on infertility has not been explored. METHODS Data from the National Health and Nutrition Examination Surveys (NHANES) were used. A total of 857 women of reproductive age (18-45 years) with available information on urinary phenol and phthalate metabolites, reproductive questionnaires, and covariates were included in the present study. The definition of infertility was based on self-reports. Multivariable logistic regression, principal component analysis (PCA), and Bayesian kernel machine regression (BKMR) with stratified variable selection were applied to determine what associations were found between combined exposure to these mixtures and risk of infertility among women of reproductive age. RESULTS After adjusting for potential confounders, bisphenol A (BPA), mono(3-carboxypropyl) phthalate (MCPP) and four di(2-ethylhexyl) phthalate (DEHP) metabolites [mono(2-ethylhexyl) phthalate (MEHP), mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono(2-ethyl-5-oxohexyl) phthalate (MEOHP) and mono(2-ethyl-5-carboxypentyl) phthalate (MECPP)] were positively associated with infertility. PCA revealed that the DEHP-BPA factor's PC score was significantly positively related to the likelihood of infertility [adjusted odds ratio (aOR) = 1.45; 1.08, 1.82]. The DEHP-BPA component consistently had the highest group posterior inclusion probability (PIP) in BKMR models. The BKMR model also found that MEOHP, MEHHP, and BPA were positively associated with infertility risk when the remaining combination concentrations were held at their median values. In addition, we observed that the probability of infertility increased dramatically as the quantiles of total mixture concentration increased. CONCLUSION Our findings indicate that a combination of phenol and phthalate metabolites is linked to infertility among reproductive-age women. BPA and DEHP, in particular, are significantly related to the risk of infertility.
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Affiliation(s)
- Wenqiang Zhan
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Yang
- Hainan Women and Children's Medical Center, Haikou, Hainan, China
| | - Jun Zhang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Chen
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Carvalho AL, Brooks DJ, Barlow D, Langlais AL, Morrill B, Houseknecht KL, Bouxsein ML, Lian JB, King T, Farina NH, Motyl KJ. Sustained Morphine Delivery Suppresses Bone Formation and Alters Metabolic and Circulating miRNA Profiles in Male C57BL/6J Mice. J Bone Miner Res 2022; 37:2226-2243. [PMID: 36054037 PMCID: PMC9712245 DOI: 10.1002/jbmr.4690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 07/30/2022] [Accepted: 08/24/2022] [Indexed: 11/05/2022]
Abstract
Opioid use is detrimental to bone health, causing both indirect and direct effects on bone turnover. Although the mechanisms of these effects are not entirely clear, recent studies have linked chronic opioid use to alterations in circulating miRNAs. Here, we developed a model of opioid-induced bone loss to understand bone turnover and identify candidate miRNA-mediated regulatory mechanisms. We evaluated the effects of sustained morphine treatment on male and female C57BL/6J mice by treating with vehicle (0.9% saline) or morphine (17 mg/kg) using subcutaneous osmotic minipumps for 25 days. Morphine-treated mice had higher energy expenditure and respiratory quotient, indicating a shift toward carbohydrate metabolism. Micro-computed tomography (μCT) analysis indicated a sex difference in the bone outcome, where male mice treated with morphine had reduced trabecular bone volume fraction (Tb.BV/TV) (15%) and trabecular bone mineral density (BMD) (14%) in the distal femur compared with vehicle. Conversely, bone microarchitecture was not changed in females after morphine treatment. Histomorphometric analysis demonstrated that in males, morphine reduced bone formation rate compared with vehicle, but osteoclast parameters were not different. Furthermore, morphine reduced bone formation marker gene expression in the tibia of males (Bglap and Dmp1). Circulating miRNA profile changes were evident in males, with 14 differentially expressed miRNAs associated with morphine treatment compared with two differentially expressed miRNAs in females. In males, target analysis indicated hypoxia-inducible factor (HIF) signaling pathway was targeted by miR-223-3p and fatty acid metabolism by miR-484, -223-3p, and -328-3p. Consequently, expression of miR-223-3p targets, including Igf1r and Stat3, was lower in morphine-treated bone. In summary, we have established a model where morphine leads to a lower trabecular bone formation in males and identified potential mediating miRNAs. Understanding the sex-specific mechanisms of bone loss from opioids will be important for improving management of the adverse effects of opioids on the skeleton. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Adriana Lelis Carvalho
- Center for Molecular Medicine, MaineHealth Institute for Research, MaineHealth, Scarborough, ME, USA
| | - Daniel J Brooks
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Deborah Barlow
- Department of Pharmacology, University of New England, Biddeford, ME, USA
| | - Audrie L. Langlais
- Center for Molecular Medicine, MaineHealth Institute for Research, MaineHealth, Scarborough, ME, USA
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
| | - Breanna Morrill
- Center for Molecular Medicine, MaineHealth Institute for Research, MaineHealth, Scarborough, ME, USA
| | - Karen L. Houseknecht
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
| | - Mary L. Bouxsein
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jane B Lian
- Department of Biochemistry and University of Vermont Cancer Center, University of Vermont, Burlington, VT, USA
- Larner College of Medicine, University of Vermont Cancer Center, Burlington, VT, USA
- Northern New England Clinical and Translational Research Network, MaineHealth, Portland, ME
| | - Tamara King
- Center for Excellence in the Neurosciences, University of New England, Biddeford, ME, USA
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, USA
| | - Nicholas H Farina
- Department of Biochemistry and University of Vermont Cancer Center, University of Vermont, Burlington, VT, USA
- Larner College of Medicine, University of Vermont Cancer Center, Burlington, VT, USA
- Northern New England Clinical and Translational Research Network, MaineHealth, Portland, ME
| | - Katherine J Motyl
- Center for Molecular Medicine, MaineHealth Institute for Research, MaineHealth, Scarborough, ME, USA
- Northern New England Clinical and Translational Research Network, MaineHealth, Portland, ME
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
- Tufts University School of Medicine, Tufts University, Boston, MA, USA
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Roth MJ, Moorehead RA. The miR-200 family in normal mammary gland development. BMC DEVELOPMENTAL BIOLOGY 2021; 21:12. [PMID: 34454436 PMCID: PMC8399786 DOI: 10.1186/s12861-021-00243-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 08/08/2021] [Indexed: 12/23/2022]
Abstract
The miR-200 family of microRNAs plays a significant role in inhibiting mammary tumor growth and progression, and its members are being investigated as therapeutic targets. Additionally, if future studies can prove that miR-200s prevent mammary tumor initiation, the microRNA family could also offer a preventative strategy. Before utilizing miR-200s in a therapeutic setting, understanding how they regulate normal mammary development is necessary. No studies investigating the role of miR-200s in embryonic ductal development could be found, and only two studies examined the impact of miR-200s on pubertal ductal morphogenesis. These studies showed that miR-200s are expressed at low levels in virgin mammary glands, and elevated expression of miR-200s have the potential to impair ductal morphogenesis. In contrast to virgin mammary glands, miR-200s are expressed at high levels in mammary glands during late pregnancy and lactation. miR-200s are also found in the milk of several mammalian species, including humans. However, the relevance of miR-200s in milk remains unclear. The increase in miR-200 expression in late pregnancy and lactation suggests a role for miR-200s in the development of alveoli and/or regulating milk production. Therefore, studies investigating the consequence of miR-200 overexpression or knockdown are needed to identify the function of miR-200s in alveolar development and lactation.
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Affiliation(s)
- Majesta J Roth
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - Roger A Moorehead
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
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