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Hue-Beauvais C, Laubier J, Brun N, Houtia I, Jaffrezic F, Bevilacqua C, Le Provost F, Charlier M. Puberty is a critical window for the impact of diet on mammary gland development in the rabbit. Dev Dyn 2019; 248:948-960. [PMID: 31348557 PMCID: PMC6790954 DOI: 10.1002/dvdy.91] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 07/12/2019] [Accepted: 07/17/2019] [Indexed: 02/06/2023] Open
Abstract
Background Nutritional changes can affect future lactation efficiency. In a rabbit model, an obesogenic diet initiated before puberty and pursued throughout pregnancy enhances mammary differentiation, but when started during the neonatal period can cause abnormal mammary development in early pregnancy. The aim of this study was to investigate the impact of an unbalanced diet administered during the pubertal period only. Results Consuming an obesogenic diet at puberty did not affect either metabolic parameters or certain maternal reproductive parameters at the onset of adulthood. In contrast, at Day 8 of pregnancy, epithelial tissue showed a lower proliferation rate in obesogenic‐diet fed rabbits than in control‐diet fed rabbits. Wap and Cx26 genes, mammary epithelial cell differentiation markers, were upregulated although Wap protein level remained unchanged. However, the expression of genes involved in lipid metabolism and in alveolar formation was not modified. Conclusion Taken together, our results demonstrate that the consumption for 5 weeks of an obesogenic diet during the pubertal period initiates mammary structure modifications and affects mammary epithelial cell proliferation and differentiation. Our findings highlight the potentially important role played by unbalanced nutrition during critical early‐life windows in terms of regulating mammary epithelial cell differentiation and subsequent function in adulthood. Our results demonstrate that the consumption for five weeks of an obesogenic diet during the pubertal period initiates mammary structure modifications and affects mammary epithelial cell proliferation and differentiation. Our findings highlight the potentially important role played by unbalanced nutrition during critical early‐life windows in terms of regulating mammary epithelial cell differentiation and subsequent function in adulthood.
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Affiliation(s)
- Cathy Hue-Beauvais
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Johann Laubier
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Nicolas Brun
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Inès Houtia
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Florence Jaffrezic
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Claudia Bevilacqua
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | | | - Madia Charlier
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
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Wang K, Donnarumma F, Herke SW, Dong C, Herke PF, Murray KK. RNA sampling from tissue sections using infrared laser ablation. Anal Chim Acta 2019; 1063:91-98. [PMID: 30967191 DOI: 10.1016/j.aca.2019.02.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/17/2019] [Accepted: 02/24/2019] [Indexed: 10/27/2022]
Abstract
RNA was obtained from discrete locations of frozen rat brain tissue sections through infrared (IR) laser ablation using a 3-μm wavelength in transmission geometry. The ablated plume was captured in a microcentrifuge tube containing RNAse-free buffer and processed using a commercial RNA purification kit. RNA transfer efficiency and integrity were evaluated based on automated electrophoresis in microfluidic chips. Reproducible IR-laser ablation of intact RNA was demonstrated with purified RNA at laser fluences of 3-5 kJ/m2 (72 ± 12% transfer efficiency) and with tissue sections at a laser fluence of 13 kJ/m2 (79 ± 14% transfer efficiency); laser energies were attenuated ∼20% by the soda-lime glass slides used to support the samples. RNA integrity from tissue ablation was >90% of its original RIN value (∼7) and the purified RNA was sufficiently intact for conversion to cDNA and subsequent qPCR assay.
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Affiliation(s)
- Kelin Wang
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Fabrizio Donnarumma
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Scott W Herke
- Genomics Facility, College of Science, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Chao Dong
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Patrick F Herke
- Genomics Facility, College of Science, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Kermit K Murray
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, United States.
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Mori G, Sasaki H, Makabe Y, Yoshinari M, Yajima Y. The genes Scgb1a1, Lpo and Gbp2 characteristically expressed in peri-implant epithelium of rats. Clin Oral Implants Res 2015; 27:e190-e198. [DOI: 10.1111/clr.12601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Gentaro Mori
- Department of Oral and Maxillofacial Implantology; Tokyo Dental College; Tokyo Japan
- Division of Oral Implants Research; Oral Health Science Center; Tokyo Dental College; Tokyo Japan
| | - Hodaka Sasaki
- Department of Oral and Maxillofacial Implantology; Tokyo Dental College; Tokyo Japan
- Division of Oral Implants Research; Oral Health Science Center; Tokyo Dental College; Tokyo Japan
| | - Yasushi Makabe
- Department of Oral and Maxillofacial Implantology; Tokyo Dental College; Tokyo Japan
- Division of Oral Implants Research; Oral Health Science Center; Tokyo Dental College; Tokyo Japan
| | - Masao Yoshinari
- Division of Oral Implants Research; Oral Health Science Center; Tokyo Dental College; Tokyo Japan
| | - Yasutomo Yajima
- Department of Oral and Maxillofacial Implantology; Tokyo Dental College; Tokyo Japan
- Division of Oral Implants Research; Oral Health Science Center; Tokyo Dental College; Tokyo Japan
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Beinder L, Faehrmann N, Wachtveitl R, Winterfeld I, Hartner A, Menendez-Castro C, Rauh M, Ruebner M, Huebner H, Noegel SC, Doerr HG, Rascher W, Fahlbusch FB. Detection of expressional changes induced by intrauterine growth restriction in the developing rat mammary gland via exploratory pathways analysis. PLoS One 2014; 9:e100504. [PMID: 24955840 PMCID: PMC4067350 DOI: 10.1371/journal.pone.0100504] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/26/2014] [Indexed: 12/29/2022] Open
Abstract
Background Intrauterine growth restriction (IUGR) is thought to lead to fetal programming that in turn contributes to developmental changes of many organs postnatally. There is evidence that IUGR is a risk factor for the development of metabolic and cardiovascular disease later in life. A higher incidence of breast cancer was also observed after IUGR. This could be due to changes in mammary gland developmental pathways. We sought to characterise IUGR-induced alterations of the complex pathways of mammary development at the level of the transcriptome in a rat model of IUGR, using pathways analysis bioinformatics. Methodology/Principal Findings We analysed the mammary glands of Wistar rats with IUGR induced by maternal low protein (LP) diet at the beginning (d21) and the end (d28) of pubertal ductal morphogenesis. Mammary glands of the LP group were smaller in size at d28, however did not show morphologic changes. We identified multiple differentially expressed genes in the mammary gland using Agilent SurePrint arrays at d21 and d28. In silico analysis was carried out using Ingenuity Pathways Analysis. In mammary gland tissue of LP rats at d21 of life a prominent upregulation of WT1 and CDKN1A (p21) expression was observed. Differentially regulated genes were associated with the extracellular regulated kinase (ERK)-1/-2 pathway. Western Blot analysis showed reduced levels of phosphorylated ERK-1/-2 in the mammary glands of the LP group at d21. To identify possible changes in circulating steroid levels, serum LC-Tandem mass-spectrometry was performed. LP rats showed higher serum progesterone levels and an increased corticosterone/dehydrocorticosterone-ratio at d28. Conclusions/Significance Our data obtained from gene array analysis support the hypothesis that IUGR influences pubertal development of the rat mammary gland. We identified prominent differential regulation of genes and pathways for factors regulating cell cycle and growth. Moreover, we detected new pathways which appear to be programmed by IUGR.
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Affiliation(s)
- Lea Beinder
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Nina Faehrmann
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Rainer Wachtveitl
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Ilona Winterfeld
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Andrea Hartner
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Carlos Menendez-Castro
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Manfred Rauh
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias Ruebner
- Department of Gynecology and Obstetrics, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Hanna Huebner
- Department of Gynecology and Obstetrics, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Stephanie C. Noegel
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Helmuth G. Doerr
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Wolfgang Rascher
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Fabian B. Fahlbusch
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nürnberg, Erlangen, Germany
- * E-mail:
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Catlin NR, Huse SM, Boekelheide K. The stage-specific testicular germ cell apoptotic response to low-dose X-irradiation and 2,5-hexanedione combined exposure. I: Validation of the laser capture microdissection method for qRT-PCR array application. Toxicol Pathol 2014; 42:1221-8. [PMID: 24717900 DOI: 10.1177/0192623314526319] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Over the past decade, laser capture microdissection (LCM) has grown as a tool for gene expression profiling of small numbers of cells from tumor samples and of specific cell populations in complex tissues. LCM can be used to study toxicant effects on selected cell populations within the testis at different stages of spermatogenesis. There are several LCM-related hurdles to overcome, including issues inherent to the method itself, as well as biases that result from amplifying the LCM-isolated RNA. Many technical issues associated with the LCM method are addressed here, including increasing RNA yield and obtaining more accurate quantification of RNA yields. We optimized the LCM method optimized to generate RNA quantities sufficient for quantitative reverse transcription polymerase chain reaction (qRT-PCR) array analysis without amplification and were able to validate the method through direct comparison of results from unamplified and amplified RNA from individual samples. The addition of an amplification step for gene expression studies using LCM RNA resulted in a bias, especially for low abundance transcripts. Although the amplification bias was consistent across samples, researchers should use caution when comparing results generated from amplified and unamplified LCM RNA. Here, we have validated the use of LCM-derived RNA with the qRT-PCR array, improving our ability to investigate cell-type and stage-specific responses to toxicant exposures.
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Affiliation(s)
- Natasha R Catlin
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Susan M Huse
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
| | - Kim Boekelheide
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, USA
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