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pan C, bai X, Li N, Zheng N, Si Y, Zhao Y. PBX3 as a biomarker for the early diagnosis and prediction of prognosis of glioma. PLoS One 2024; 19:e0293647. [PMID: 38324550 PMCID: PMC10849273 DOI: 10.1371/journal.pone.0293647] [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: 11/09/2022] [Accepted: 10/17/2023] [Indexed: 02/09/2024] Open
Abstract
BACKGROUND Increasing evidence have elucidated that PBX3 played a crucial role in cancer initiation and progression. PBX3 was differentially expressed in many cancer types. However, PBX3 potential involvement in gliomas remains to be explored. METHODS The expression level of PBX3 in glioma tissues and glioma cells, and its correlation with clinical features were analyzed by data from TCGA, GEPIA, CGGA and CCLE. Univariable survival and Multivariate Cox analysis was used to compare several clinical characteristics with survival. We also analyzed the correlation between PBX3 expression level and survival outcome and survival time of LGG and GBM patients by using linear regression equation. GSEA was used to generate an ordered list of all genes related to PBX3 expression and screening of genes co-expressed with PBX3 mRNA by "limma" package. RESULTS The results showed that PBX3 was highly expressed in gliomas and its expression increased with the increase of malignancy. Survival analysis found that PBX3 is more valuable in predicting the OS and PFI of LGG patients than that of GBM. For further study, TCGA and CGGA data were downloaded for univariate Cox analysis and multivariate Cox analysis which showed that the expression of PBX3 was independent influencing factors for poor prognosis of LGG patients. Meanwhile, Receiver operating characteristic (ROC) curve showed that PBX3 was a predictor of overall survival rate and progression-free survival rate of LGG. Linear regression model analysis indicated that the higher expression of PBX3 the higher the risk of death of LGG patients, and the higher expression of PBX3 the higher the risk of disease progression of LGG patients. Next, TCGA data were downloaded for GSEA and Co-expression analyses, which was performed to study the function of PBX3. CONCLUSION PBX3 may be involved in the occurrence and development of glioma, and has potential reference value for the early diagnosis and prediction of prognosis of glioma.
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Affiliation(s)
- Cuicui pan
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xueli bai
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Na Li
- Department of Dermatology, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ni Zheng
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yuanquan Si
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yueran Zhao
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
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Ruiz TFR, Vilamaior PSL, Grigio V, Colleta SJ, Zucão MI, de Campos SGP, Dos Santos FCA, Biancardi MF, Perez APS, Taboga SR, Leonel ECR. The Mongolian Gerbil as a Useful Experimental Model in Reproductive Biology. Reprod Sci 2023; 30:2092-2106. [PMID: 36696041 DOI: 10.1007/s43032-023-01171-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023]
Abstract
Ultimately, the Mongolian gerbils (Meriones unguiculatus) have acquired a relevant role in biological and biomedical experiments alongside other rodents. The use of gerbils in research has been mainly oriented to physiological and pharmacological studies, with special attention to nervous, digestive, and auditory systems as well as microbiology and parasitology. Ultimately, gerbils have also been applied for studying carcinogenesis in different organs and systems, since these animals show a natural propensity to develop spontaneous proliferative lesions, especially in steroid-responsive organs. This characteristic shed light on the reproductive aspects of this rodent model regarding morphological features in male and female individuals. This review of literature summarizes the significance of this model as an alternative to the use of inbred mice and rats in reproductive experimental research, highlighting recent findings. Gerbils have contributed to the expansion of knowledge in prostate biology in male and female individuals, providing studies related to prostatic morphogenesis and neoplasia. In the testes, spermiogenesis occurs in 15 steps, differently from other experimental models. Also, the complete maturation of the testis-epididymal complex occurs between the second and third months. Mammary gland alterations related to the estrous cycle and pregnancy were described, as well as its modulation under endogenous and exogenous estrogenic compounds. The ovaries frequently present ovarian cysts. Furthermore, this organ shows predominantly interstitial steroidogenic glands in the stroma, especially at aging. Adrenal gland shows a large size compared to other animals, presenting three distinct zones with a remarkable role in steroidogenesis.
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Affiliation(s)
- Thalles Fernando Rocha Ruiz
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
- Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Patricia Simone Leite Vilamaior
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Vitor Grigio
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Simone Jacovaci Colleta
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Mariele Ilario Zucão
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Silvana Gisele Pegorin de Campos
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Fernanda Cristina Alcântara Dos Santos
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil
| | - Manoel Francisco Biancardi
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil
| | - Ana Paula Silva Perez
- Academic Unit of Health Sciences, Medicine Course, Federal University of Jataí, BR 36, Km 195, Jataí, Goiás, 75801-615, Brazil
| | - Sebastião Roberto Taboga
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Ellen Cristina Rivas Leonel
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil.
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3
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Custódio M, Nunes FD, Altemani A, Passador-Santos F, Rodrigues MFSD, de Sousa SCOM, Sedassari BT. Secretory carcinoma of the salivary gland is rich in lactoferrin: a possible lactational-like differentiation? Eur Arch Otorhinolaryngol 2023:10.1007/s00405-023-08023-8. [PMID: 37227470 DOI: 10.1007/s00405-023-08023-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/08/2023] [Indexed: 05/26/2023]
Abstract
PURPOSE It has been hypothesised that secretory carcinoma of the salivary gland (SCsg) might have a lactational-like differentiation. Therefore, we aimed to assess the immunoexpression of breast hormonal receptors and milk-related proteins in cases of SCsg and other salivary gland tumours with prominent secretory activity. METHODS Immunohistochemistry against prolactin and growth hormone receptors, lactoferrin, human milk fat globule 1, MUC 1 and MUC4 was performed in twelve cases of SCsg and 47 other salivary gland tumours. RESULTS Most cases of SCsg were negative for prolactin and growth hormone receptors. All cases of SCsg showed enhanced membranous-cytoplasmic staining for human milk fat globule 1, a pattern seen in other tumour groups. Only SCsg showed widespread strong staining for lactoferrin, concomitantly in the cell compartment and secretion. The other positive tumour types exhibited restricted staining. MUC1 and MUC4 showed no distinct pattern of expression. CONCLUSION Although SCsg failed to demonstrate a complete lactational-like differentiation, lactoferrin showed a distinctive expression pattern in SCsg compared to other tumour types, which makes it a good marker to help in its differential diagnosis.
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Affiliation(s)
- Marcos Custódio
- School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil.
- School of Medicine, Universidade Federal Do Maranhão, Imperatriz, MA, Brazil.
| | - Fabio Daumas Nunes
- School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
| | - Albina Altemani
- School of Medicine, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | | | - Maria Fernanda Setúbal Destro Rodrigues
- School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
- Universidade Nove de Julho, São Paulo, SP, Brazil
| | - Suzana C O M de Sousa
- School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
| | - Bruno Tavares Sedassari
- School of Dentistry, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
- Universidade Nove de Julho, São Paulo, SP, Brazil
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Miller JL, Bartlett AP, Harman RM, Majhi PD, Jerry DJ, Van de Walle GR. Induced mammary cancer in rat models: pathogenesis, genetics, and relevance to female breast cancer. J Mammary Gland Biol Neoplasia 2022; 27:185-210. [PMID: 35904679 DOI: 10.1007/s10911-022-09522-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 10/16/2022] Open
Abstract
Mammary cancer, or breast cancer in women, is a polygenic disease with a complex etiopathogenesis. While much remains elusive regarding its origin, it is well established that chemical carcinogens and endogenous estrogens contribute significantly to the initiation and progression of this disease. Rats have been useful models to study induced mammary cancer. They develop mammary tumors with comparable histopathology to humans and exhibit differences in resistance or susceptibility to mammary cancer depending on strain. While some rat strains (e.g., Sprague-Dawley) readily form mammary tumors following treatment with the chemical carcinogen, 7,12-dimethylbenz[a]-anthracene (DMBA), other strains (e.g., Copenhagen) are resistant to DMBA-induced mammary carcinogenesis. Genetic linkage in inbred strains has identified strain-specific quantitative trait loci (QTLs) affecting mammary tumors, via mechanisms that act together to promote or attenuate, and include 24 QTLs controlling the outcome of chemical induction, 10 QTLs controlling the outcome of estrogen induction, and 4 QTLs controlling the outcome of irradiation induction. Moreover, and based on shared factors affecting mammary cancer etiopathogenesis between rats and humans, including orthologous risk regions between both species, rats have served as useful models for identifying methods for breast cancer prediction and treatment. These studies in rats, combined with alternative animal models that more closely mimic advanced stages of breast cancer and/or human lifestyles, will further improve our understanding of this complex disease.
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Affiliation(s)
- James L Miller
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, 14853, Ithaca, NY, USA
| | - Arianna P Bartlett
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, 14853, Ithaca, NY, USA
| | - Rebecca M Harman
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, 14853, Ithaca, NY, USA
| | - Prabin Dhangada Majhi
- Department of Veterinary & Animal Sciences, University of Massachusetts, 01003, Amherst, MA, USA
| | - D Joseph Jerry
- Department of Veterinary & Animal Sciences, University of Massachusetts, 01003, Amherst, MA, USA
| | - Gerlinde R Van de Walle
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, 14853, Ithaca, NY, USA.
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Yilmaz T, Ates Alkan F. In Vivo Dielectric Properties of Healthy and Benign Rat Mammary Tissues from 500 MHz to 18 GHz. SENSORS (BASEL, SWITZERLAND) 2020; 20:E2214. [PMID: 32295215 PMCID: PMC7218889 DOI: 10.3390/s20082214] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/29/2020] [Accepted: 04/02/2020] [Indexed: 12/27/2022]
Abstract
This work investigates the in vivo dielectric properties of healthy and benign rat mammary tissues in an attempt to expand the dielectric property knowledge of animal models. The outcomes of this study can enable testing of microwave medical technologies on animal models and interpretation of tissue alteration-dependent in vivo dielectric properties of mammary tissues. Towards this end, in vivo dielectric properties of healthy rat mammary tissues and chemically induced benign rat mammary tumors including low-grade adenosis, sclerosing adenosis, and adenosis were collected with open-ended coaxial probes from 500 MHz to 18 GHz. The in vivo measurements revealed that the dielectric properties of benign rat mammary tumors are higher than the healthy rat mammary tissues by 9.3% to 35.5% and 19.6% to 48.7% for relative permittivity and conductivity, respectively. Furthermore, to our surprise, we found that the grade of the benign tissue affects the dielectric properties for this study. Finally, a comparison with ex vivo healthy human mammary tissue dielectric properties revealed that the healthy rat mammary tissues best replicate the dielectric properties of healthy medium density human samples.
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Affiliation(s)
- Tuba Yilmaz
- Department of Electronics and Communication Engineering, Istanbul Technical University, Istanbul 34469, Turkey
| | - Fatma Ates Alkan
- Department of Biophysics, Medical School, Beykent University, Istanbul 34520, Turkey;
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El-Tahawy NFG, Rifaai RA. Immunohistochemical and ultrastructural evidence for telocytes in the different physiological stages of the female rat mammary gland. Life Sci 2019; 231:116521. [PMID: 31152814 DOI: 10.1016/j.lfs.2019.05.077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/18/2019] [Accepted: 05/28/2019] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Telocytes (TCs) are recently described to integrate a variety of different cells. AIM OF THE WORK The aim was to investigate the presence of TCs in the rat mammary gland at its different physiological stages. MATERIAL AND METHODS Twenty four adult female albino rats were classified into 4 groups: resting, mid-pregnancy, lactating, and involution groups. Inguinal mammary glands were processed for immunohistochemical and transmission electron microscopic (TEM) examination. RESULTS TCs were immune-positive for c-kit and CD34 and showed significant differences in the different studied groups indicating variable roles at the different stages. TEM results characterized TCs by its shape and the long slender and moniliform telopodes linking the cells into stromal networks. The extracellular exosomes, homo-cellular synapsis and hetero-cellular synapsis were observed. CONCLUSION Our study provides evidence for the presence of TCs in all stages of the gland; not only in the resting stage as proved by other studies, but with immune-labeling differences suggesting different structural and physiological roles of TCs according to the stage requirements. These functions might via controlling the proliferation during pregnancy and lactation and the involution of the gland after weaning. Thus, more future functional studies of TCs will be important to help understanding the mechanism by which TCs contribute to tissue homeostasis concerning the role of the stromal/epithelial interactions in mammary gland biology and pathology including breast cancer which would be revolutionary for future therapeutic applications.
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Affiliation(s)
| | - Rehab Ahmed Rifaai
- Histology and Cell Biology Department, Faculty of Medicine, Minia University, Egypt
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Miyamoto Y, Kawaguchi H, Tanimoto A. Relationship between morphological development and sex hormone receptor expression of mammary glands with age in male rats. Exp Anim 2018. [PMID: 29526866 PMCID: PMC6083026 DOI: 10.1538/expanim.17-0134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study is to investigate the changes with age on morphology and sex
hormone receptor expression in the mammary glands of male Sprague-Dawley rats, focusing on
male-specific cells, “oxyphilic cells”, observed after sexual maturity. The mammary glands
of male rats at 14, 21, 35, 50, 75 and 100 days old were examined by gross observation,
microscopic observation using whole mount specimens, histological and immunohistochemical
sections. Grossly, mammary glands showed brown color at 50–100 days old. In whole mount
specimens, terminal end buds (TEBs) were observed at 14–50 days old and the number of TEBs
was highest at 35 days old. Histologically, the male mammary glands contained small
epithelial cells with scanty cytoplasm at 14–35 days old while ductal and lobular
epithelial cells were changed into oxyphilic cells with abundant cytoplasm at 50–100 days
old. Immunohistochemicaly, androgen receptor (AR), estrogen receptor (ER) and progesterone
receptor (PgR) expressions were found in both mammary glands found at a young age and
oxyphilic cells. In oxyphilic cells, AR expression was dominant compared to ER and PgR
expressions and increased with age. From these results, the development at 50–100 days old
might be strongly related to AR. Ultrastructural observation of oxyphilic cells confirmed
a number of lipid droplets, deformed and/or enlarged mitochondria, lysosomes and
peroxisomes in their cytoplasm.
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Affiliation(s)
- Yoko Miyamoto
- Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama-shi, Aichi 484-8506, Japan
| | - Hiroaki Kawaguchi
- Department of Hygiene and Health Promotion Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima-shi, Kagoshima 890-8544, Japan
| | - Akihide Tanimoto
- Department of Pathology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima-shi, Kagoshima 890-8544, Japan
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GLA supplementation regulates PHD2 mediated hypoxia and mitochondrial apoptosis in DMBA induced mammary gland carcinoma. Int J Biochem Cell Biol 2018; 96:51-62. [PMID: 29355756 DOI: 10.1016/j.biocel.2018.01.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 12/30/2017] [Accepted: 01/13/2018] [Indexed: 11/23/2022]
Abstract
The aim of the present study is to evaluate the effect of gamma linolenic acid (GLA) on mitochondrial mediated death apoptosis, hypoxic microenvironment and cholinergic anti-inflammatory pathway against 7, 12-dimethylbenz (a) anthracene (DMBA) induced mammary gland carcinoma. The effects of GLA were evaluated morphologically and biochemically against DMBA induced mammary gland carcinoma. The metabolic study was done for evaluation of biomarkers using 1H NMR. The present study was also verified through immunoblotting and qRT-PCR studies for the evaluation of various pathways. GLA treatment has a delineate implementation upon morphology of the tissues when evaluated through carmine staining, hematoxyline and eosin staining and scanning electron microscopy. GLA also demarked a commendatory proclamation of the fifteen key serum metabolites analogous with amino acid metabolism and fatty acid metabolism when recognized through1H NMR studies. The immunoblotting and qRT-PCR studies accomplished that GLA mediated mitochondrial death apoptosis, curtail hypoxic microenvironment along with hindrance of de novo fatty acid synthesis and also mediate the cholinergic anti-inflammatory pathway to proclaim its anticancer effects.
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Fontelles CC, da Cruz RS, Hilakivi-Clarke L, de Assis S, Ong TP. Investigation of Paternal Programming of Breast Cancer Risk in Female Offspring in Rodent Models. Methods Mol Biol 2018; 1735:207-220. [PMID: 29380314 DOI: 10.1007/978-1-4939-7614-0_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Emerging experimental evidence show that fathers' experiences during preconception can influence their daughters' risk of developing breast cancer. Here we describe detailed protocols for investigation in rats and mice of paternally mediated breast cancer risk programming effects.
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Affiliation(s)
- Camile Castilho Fontelles
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo and Food Research Center (FoRC), São Paulo, Brazil
- Georgetown University Lombardi Comprehensive Cancer Center, Washington, DC, USA
| | | | | | - Sonia de Assis
- Georgetown University Lombardi Comprehensive Cancer Center, Washington, DC, USA
| | - Thomas Prates Ong
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo and Food Research Center (FoRC), São Paulo, Brazil.
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Leonel EC, Falleiros LR, Campos SG, Taboga SR. Histological and immunohistochemical characterization of the Mongolian gerbil's mammary gland during gestation, lactation and involution. Acta Histochem 2017; 119:273-283. [PMID: 28238410 DOI: 10.1016/j.acthis.2017.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 02/10/2017] [Accepted: 02/10/2017] [Indexed: 01/22/2023]
Abstract
The morphological description of normal tissues is fundamental for making comparisons and in order to identify injuries and lesions. The aim of this work was to describe the morphological characteristics of the female Mongolian gerbil's (Meriones unguiculatus) normal mammary gland, the average expression of hormone receptors, and the average proliferation rates in the epithelial cells during the periods of lactation, pregnancy and involution. Dams were euthanized on the 14th and 21st gestational days, 7 and 14days after parturition, and 3 and 5days after weaning. The dams' mammary tissues were processed and were submitted to haematoxylin and eosin staining, Periodic Acid Schiff (PAS) staining, and Gomori's Reticulin staining. Additionally, immunohistochemistry was performed for the characterization of myoepithelial cells with α-actin, the proliferation rates with proliferating cell nuclear antigen (PCNA), the estrogen hormonal receptors (ESR1 and ESR2), and progesterone receptor (PR) quantifications. It was observed that the abundant adipose tissues were replaced by glandular epithelia and there was an increase in the epithelial cell's height (from 5.97 to 32.4μm in 14th and 21st gestational days and from 20.64 to 25.4μm in 7th and 14th lactational days, respectively) and the acini diameters (from 24.88 to 69.92μm in 14th and 21st gestational days and from 139.69 to 118.59μm in 7th and 14th lactational days, respectively) with the progression of gestation and lactation. The PAS staining intensity varied throughout the glands and between the stages that were evaluated. The extracellular matrix showed different phenotypes too, with more of a presence of the Type I collagen during the early gestation and involution and with more reticular fibers (Type III collagen) during the late gestation period and lactation. The myoepithelial layers showed alterations in their distribution with thick patterns as verified by the α-actin labeling. The PCNA showed higher rates of the marked cells in 14th and 21st gestational days (40.25 and 60.28%) and in 7th and 14th lactational days (64.08 and 65.08%). The hormone receptor quantifications showed a high variation in the rates: the average PR staining decreased from 14th to 21st gestational days (from 42.3 to 8.54%), from 7th to 14th lactational days (from 59.83 to 23.18%) and from 3rd to 5th days after weaning (from 39.98 to 12.72). There were higher averages of ESR1 staining in gestational days 14 and 21(from 58.06 to 30.02%). ESR2 staining decreased during gestation (25.7 and 12.94% in 14th and 21st gestational days)and involution (from 50.97 to 30.18% in 3rd and 5th days after weaning). The Mongolian gerbils showed similar morphological characteristics when they were compared to mice and rats. However, the higher proliferation rates with a smaller involution period compared to other murine characterized this species as being adequate for mammary pathologies studies.
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Park HJ, Lee WY, Jeong HY, Song H. Regeneration of Bovine Mammary Gland in Immunodeficient Mice by Transplantation of Bovine Mammary Epithelial Cells Mixed with Matrigel. Int J Stem Cells 2016; 9:186-191. [PMID: 27788570 PMCID: PMC5155714 DOI: 10.15283/ijsc16044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2016] [Indexed: 12/15/2022] Open
Abstract
Background and Objectives With the global demand for dairy protein for consumption growing annually, there has been increasing activity in the research field of dairy protein synthesis and production. From a manipulation perspective, it is more difficult to use live cattle for laboratory studies on the production of milk as well as of dairy protein such as casein, as compared with using laboratory animals like rodents. Therefore, we aimed to develop a mouse model of bovine mammary alveolar ducts for laboratory-scale studies. We studied the formation of the bovine mammary gland ductal structure by transplanting the MAC-T bovine alveolar cell line into mice. Methods and Results MAC-T cells (1×107) were suspended in Matrigel and injected into the dorsal tissue of 8-week-old male BALB/C nude mice. Histological analysis of tissue dissected from the MAC-T cell-transplanted mice after 6 weeks showed the typical morphology of the tubuloalveolar female gland, as well as glands made up of branching ducts that were surrounded by smooth muscle with small alveoli budding off the ducts. In addition, the epithelial markers CK14 and CK18 were expressed within the duct-like structure. Prolactin was detected in the duct interior in these CK14+ and CK18+ cells but not in the non-transplanted MAC-T cells. Conclusions These results showed that duct-like tissue had been successfully formed after 6 weeks of transplantation of the CK14+ and CK18+ MAC-T cells into mice dorsal tissue. This mouse model will be a useful tool for further research on the bovine mammary gland.
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Affiliation(s)
- Hyun Jung Park
- Department of Stem Cell and Regenerative Biology, College of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - Won Young Lee
- Department of Food Bioscience, Research Institute for Biomedical & Health Science, College of Biomedical & Health Science, Konkuk University, Chungju, Korea
| | - Ha Yeon Jeong
- Dairy Science Division, National Institute of Animal Science, RDA, Wanju, Korea
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biology, College of Animal Biotechnology, Konkuk University, Seoul, Korea
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