Lapatinib inhibits meiotic maturation of porcine oocyte-cumulus complexes cultured in vitro in gonadotropin-supplemented medium
| Autor: | Sona Scsukova, Eva Nagyova, Lucie Nemcova, Alzbeta Mlynarcikova, Jaroslav Kalous |
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| Rok vydání: | 2013 |
| Předmět: |
endocrine system
medicine.medical_specialty Swine medicine.drug_class Lapatinib Receptor tyrosine kinase Andrology Epidermal growth factor Internal medicine medicine Animals Receptor Cells Cultured Cumulus Cells biology Obstetrics and Gynecology Cell Differentiation Oocyte Cumulus oophorus Growth Inhibitors Meiosis medicine.anatomical_structure Endocrinology Reproductive Medicine Oocytes Quinazolines biology.protein Female Follicle Stimulating Hormone Gonadotropin Tyrosine kinase hormones hormone substitutes and hormone antagonists medicine.drug |
| Zdroj: | Fertility and Sterility. 99:1739-1748 |
| ISSN: | 0015-0282 |
| DOI: | 10.1016/j.fertnstert.2012.12.040 |
| Popis: | Objective To determine whether inhibition of epidermal growth factor (EGF) receptor tyrosine kinase with lapatinib affects oocyte maturation, expression of the cumulus expansion-associated genes such as tumor necrosis factor alpha-induced protein 6 (TNFAIP6) and prostaglandin-endoperoxide synthase 2 (PTGS2), and synthesis of hyaluronan (HA) and progesterone (P) by porcine oocyte cumulus complexes (OCC). Design Our work focuses on lapatinib, an orally active small molecule that selectively inhibits the tyrosine kinase domain of both EGF receptor and human EGF receptor 2, and downstream signaling. Setting A reproductive biology laboratory. Patient(s) Not applicable. Intervention(s) Porcine OCC were cultured in vitro in a medium with FSH/LH in the presence/absence of lapatinib. Main Outcome Measure(s) Methods performed: real-time reverse transcriptase-polymerase chain reaction (PCR), immunofluorescence, RIA. Result(s) In FSH/LH-stimulated and expanded cumulus oophorus extracellular matrix, HA was detected with biotinylated HA-binding proteins. However, weaker HA- and weaker cytoplasmic TNFAIP6 were detected were detected in lapatinib-pretreated OCC. The expression of the two cumulus expansion-associated gene transcripts was significantly decreased and synthesis of HA by cumulus cells was reduced. Lapatinib (10 μM) inhibited FSH/LH-induced oocyte meiotic maturation. Progesterone production increased after OCC stimulation with FSH/LH and was significantly decreased by lapatinib (10 μM). Conclusion(s) Lapatinib inhibits oocyte maturation and reduces expression of cumulus expansion-associated transcripts, and synthesis of HA and P in OCC cultured in vitro in FSH/LH-supplemented medium. |
| Databáze: | OpenAIRE |
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