Estrogen 17ßestradiol accelerates the proliferation of uterine junctional zone smooth muscle cells via the let7a/Lin28B axis in adenomyosis.
Mol Med Rep
; 23(5)2021 May.
Article
em En
| MEDLINE
| ID: mdl-34227673
ABSTRACT
The estrogen 17ßestradiol has been proven to serve an indispensable role in the occurrence and development of adenomyosis (ADS). The let7a/Lin28B axis can control cell proliferation by acting as a tumorinhibiting axis in numerous types of cancer. However, its role in ADS remains unknown. The present study aimed i) to elucidate the role of let7a in regulating the proliferation of human uterine junctional zone (JZ) smooth muscle cells (SMCs) in ADS, ii) to evaluate whether 17ßestradiol modifies the expression levels of let7a and Lin28B in JZ SMCs in ADS, and iii) to establish how 17ßestradiol affects the function of the let7a/Lin28B axis in the proliferation of JZ SMCs in ADS. A total of 36 premenopausal women with ADS were enrolled as the experimental group and 34 women without ADS were recruited as the control group. Reverse transcriptionquantitative PCR was used to evaluate the expression level of let7a, and western blotting was performed to determine the Lin28B expression levels. Lentiviral null vector, let7a overexpression lentiviral vector GV280 and let7a inhibition lentiviral vector GV369 were used to infect cells to alter the expression of let7a for further functional experiments. 17ßestradiol and Cell Counting Kit8 assays were conducted to determine how 17ßestradiol affects the function of the let7a/Lin28B axis in the proliferation of JZ SMCs in ADS. The results demonstrated that let7a was downregulated and Lin28B was upregulated in the JZ SMCs of ADS compared with the control cells (P<0.0001). Moreover, a lower expression of let7a led to faster proliferation of JZ SMCs (P<0.05), and 17ßestradiol affected the let7a/Lin28B axis to accelerate the proliferation of JZ SMCs in ADS (P<0.05). These data suggested that 17ßestradiol collaborates with the let7a/Lin28B axis to affect the development of ADS.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Útero
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Proteínas de Ligação a RNA
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Miócitos de Músculo Liso
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MicroRNAs
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Proliferação de Células
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Estradiol
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Adenomiose
Limite:
Adult
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Female
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Humans
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Middle aged
Idioma:
En
Revista:
Mol Med Rep
Ano de publicação:
2021
Tipo de documento:
Article