Disruption of androgen signaling during puberty affects Notch pathway in rat seminiferous epithelium
| Autor: | Laura Pardyak, Sylwia Marek, Malgorzata Brzoskwinia, Barbara Bilińska, Anna Hejmej, Alicja Kamińska, P. Pawlicki |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Male
0301 basic medicine puberty medicine.medical_treatment Gene Expression Flutamide chemistry.chemical_compound 0302 clinical medicine Endocrinology Testis Basic Helix-Loop-Helix Transcription Factors lcsh:Reproduction Testosterone Sexual Maturation Notch signaling Receptors Notch Obstetrics and Gynecology Seminiferous Epithelium Receptors Androgen 030220 oncology & carcinogenesis Androgens Signal Transduction medicine.medical_specialty JAG1 lcsh:QH471-489 medicine.drug_class Notch signaling pathway testis Biology lcsh:Gynecology and obstetrics 03 medical and health sciences Internal medicine medicine Animals Humans Rats Wistar lcsh:RG1-991 Research Puberty androgens Androgen Antagonists Androgen Repressor Proteins Androgen receptor Steroid hormone 030104 developmental biology Reproductive Medicine chemistry Transcription Factor HES-1 Spermatogenesis Jagged-1 Protein Developmental Biology |
| Zdroj: | Reproductive Biology and Endocrinology, Vol 18, Iss 1, Pp 1-14 (2020) Reproductive Biology and Endocrinology : RB&E |
| ISSN: | 1477-7827 |
| DOI: | 10.1186/s12958-020-00582-3 |
| Popis: | Background Onset of spermatogenesis at puberty is critically dependent on the activity of hypothalamic-pituitary-gonadal axis and testosterone production by Leydig cells. The aim of this study was to examine whether activation of Notch receptors and expression of Notch ligands and effector genes in rat seminiferous epithelium are controlled by androgen signaling during puberty. Methods Peripubertal (5-week-old) Wistar rats received injections of flutamide (50 mg/kg bw) daily for 7 days to reduce androgen receptor (AR) signaling or a single injection of ethanedimethane sulphonate (EDS; 75 mg/kg bw) to reduce testosterone production. Gene and protein expressions were analyzed by real-time RT-PCR and western blotting, respectively, protein distribution by immunohistochemistry, and steroid hormone concentrations by enzyme-linked immunosorbent assay. Statistical analyses were performed using one-way ANOVA followed by Tukey’s post hoc test or by Kruskal-Wallis test, followed by Dunn’s test. Results In both experimental models changes of a similar nature in the expression of Notch pathway components were found. Androgen deprivation caused the reduction of mRNA and protein expression of DLL4 ligand, activated forms of Notch1 and Notch2 receptors and HES1 and HEY1 effector genes (p p p p p p Conclusions Androgens and androgen receptor signaling may be considered as factors regulating Notch pathway activity and the expression of Hes and Hey genes in rat seminiferous epithelium during pubertal development. Further studies should focus on functional significance of androgen-Notch signaling cross-talk in the initiation and maintenance of spermatogenesis. |
| Databáze: | OpenAIRE |
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