Comparative effects of heparin-binding epidermal growth factor-like growth factor on the growth of cultured human uterine leiomyoma cells and myometrial cells
| Autor: | Noriyuki Ohara, Qin Xu, Takeshi Maruo, Shigeki Takekida, Jiayin Wang |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Adult
medicine.medical_specialty medicine.medical_treatment Apoptosis Biology Andrology Growth factor receptor Epidermal growth factor Internal medicine Proliferating Cell Nuclear Antigen medicine In Situ Nick-End Labeling Humans Cells Cultured Cell Proliferation Uterine leiomyoma Epidermis (botany) Epidermal Growth Factor Leiomyoma Growth factor Rehabilitation Obstetrics and Gynecology medicine.disease ErbB Receptors Endocrinology Ki-67 Antigen Reproductive Medicine Terminal deoxynucleotidyl transferase Uterine Neoplasms Myometrium Intercellular Signaling Peptides and Proteins Female Deoxyuracil Nucleotides Fetal bovine serum Heparin-binding EGF-like Growth Factor |
| Zdroj: | Human reproduction (Oxford, England). 20(6) |
| ISSN: | 0268-1161 |
| Popis: | BACKGROUND: The objective of this study was to investigate the comparative effects of heparin-binding epidermal growth factor-like growth factor (HB-EGF) on the growth of cultured human leiomyoma cells and myometrial cells. METHODS: Isolated cells were subcultured in Phenol Red-free Dulbecco’s modified Eagle’s medium supplemented with 10% fetal bovine serum for 120 h and then stepped down to serum-free conditions for an additional 24 and 48 h in the presence or absence of graded concentrations of HB-EGF (0.1, 1, 10 and 100 ng/ml). These cells were used for immunocytochemical analysis for Ki67, western blot analysis for proliferating cell nuclear antigen (PCNA) and human EGF receptor (HER1), and TdT (terminal deoxynucleotidyl transferase)mediated dUDP nick-end labelling (TUNEL) assay. RESULTS: Treatment with HB-EGF at concentrations > 1 ng/ml significantly increased the Ki67-positive rate of cultured leiomyoma cells and myometrial cells. Treatment with HB-EGF also resulted in a dose-dependent increase in PCNA expression in both cells compared with untreated control cultures. A significant increase in PCNA expression in cultured myometrial cells was noted following treatment with HB-EGF at concentrations > 1 ng/ml, whereas an increase in PCNA expression in cultured leiomyoma cells was noted following treatment with HB-EGF at concentrations > 10 ng/ml. HER1 expression was significantly higher in untreated myometrial cells than in untreated leiomyoma cells. A significant increase in HER1 expression in myometrial cells was observed when treated with HB-EGF at concentrations >10 ng/ml, whereas a significant increase in HER1 expression in leiomyoma cells was noted only by the treatment with HBEGF at concentrations >100 ng/ml. Treatment with HB-EGF decreased the TUNEL-positive rate of those cells with no significant differences between the two cell types. CONCLUSIONS: The results obtained suggest that HBEGF plays a role in stimulating the proliferation of leiomyoma cells and myometrial cells and in inhibiting apoptosis of those cells through augmentation of HER1 expression. Since the proliferative potential of myometrial cells responded better to HB-EGF than that of leiomyoma cells, HB-EGF may play a more vital role in myometrial growth than leiomyoma growth. |
| Databáze: | OpenAIRE |
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