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Published on: May 11, 2016
Loss of Macrophage Migration Inhibitory Factor (MIF) Alters the Timing of Ventral Prostate Maturation in Mice
Júlia Eduarda Mesquita Matos1, Marina das Graças Carneiro E Silva1, Laura Eduarda Dinato Sudário1
1Departamento de Biologia Celular, Histologia e Embriologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil.
Abstract:
This study investigated the contribution of macrophage migration inhibitory factor (MIF) for the development of ventral prostate in pubertal and adult mice. Mice aged 30 or 60 days from C57BL/6 WT (wild-type) and MIF-/-(knockout) strains were studied. Histological analysis, immunohistochemistry (smooth muscle alpha-actin, vimentin, PCNA, WNT5a), serum testosterone, and western blotting for ERK1/2 were performed. Thirty-day-old MIF-/- mice exhibited higher testosterone serum levels, and the ventral prostate presented enlarged luminal area as well as decreased collagen and smooth muscle cell content. Regarding cell proliferation, there was an important reduction in MIF-/- mice of both ages. In addition, MIF-/- 30 mice presented elevated ERK activation and WNT5a scores in the prostate. This study showed that developmental change expected only at adulthood of prostate is already very evident at 30 days of age in MIF-/- mice, anticipating the pubertal development. Thus, MIF has a stimulative role in proliferation and also modulates androgenic stimuli in the prostate, which can contribute to gland development from puberty to adulthood.
Insights
Macrophage migration inhibitory factor (MIF) deficiency accelerates prostate development in mice, showing adult-like changes in pubertal stages. MIF plays a key role in prostate cell proliferation and androgenic modulation.
Area of Science:
- Reproductive biology
- Molecular endocrinology
- Prostate development
Background:
- Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine with known roles in inflammation and immunity.
- Its specific contribution to prostate development, particularly during puberty and adulthood, remains incompletely understood.
Purpose of the Study:
- To investigate the role of MIF in the pubertal and adult development of the mouse ventral prostate.
- To elucidate the molecular mechanisms by which MIF influences prostate growth and cellular processes.
Main Methods:
- Comparative analysis of wild-type (WT) and MIF-knockout (MIF-/-) mice at 30 and 60 days of age.
- Histological examination, immunohistochemistry (smooth muscle alpha-actin, vimentin, PCNA, WNT5a), serum testosterone assays, and Western blotting for ERK1/2 phosphorylation.
Main Results:
- MIF-/- mice at 30 days exhibited higher serum testosterone, enlarged prostate luminal area, and reduced collagen and smooth muscle content compared to WT.
- Cell proliferation (PCNA) was significantly reduced in MIF-/- mice of both ages.
- Elevated ERK1/2 activation and WNT5a expression were observed in the prostates of 30-day-old MIF-/- mice.
Conclusions:
- MIF deficiency accelerates ventral prostate development, manifesting adult-like changes in pubertal mice (30 days old).
- MIF appears to stimulate prostate cell proliferation and modulate androgenic signaling pathways.
- These findings highlight MIF's critical role in regulating prostate gland maturation from puberty through adulthood.
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