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Generation of a Mouse Prostate Organoid-Based Model for Studying Host-Pathogen Interactions

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Mitosis orientation in prostate epithelial cells changed by endocrine effect.

Xiang-yun Liu¹, Dong-mei Li, Xiao-fang Zhang

¹Fudan University, Shanghai 200032, China.

Acta Pharmacologica Sinica

|January 25, 2008

Summary

Testosterone propionate (TP) significantly altered prostate cell mitosis orientation in male rats, aligning it parallel to the basement membrane. Estrogen (E2) and control groups showed perpendicular orientation, indicating a novel TP effect.

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Area of Science:

Endocrinology
Cell Biology
Urology

Background:

Hormonal regulation of prostate epithelial cell division is crucial for tissue homeostasis.
Androgens and estrogens play distinct roles in prostate development and function.

Purpose of the Study:

To investigate the differential effects of testosterone propionate (TP) and estrogen (E2) on mitosis orientation in male rat prostate epithelial cells.

Main Methods:

Castrated male rats received single injections of TP or E2.
Prostate tissues were analyzed using immunohistochemistry and hematoxylin-eosin staining.
Mitosis orientation relative to the basement membrane was assessed.

Main Results:

TP treatment caused prostate epithelial cell mitoses to orient parallel to the basement membrane.
E2 treatment and control groups exhibited perpendicular mitosis orientation.
TP increased bromodeoxyuridine-labeled cells in both stroma and epithelium, while E2 primarily labeled stromal cells.

Conclusions:

Testosterone propionate induces a novel, marked change in prostate epithelial cell mitosis orientation.
Hormonal signaling pathways differentially regulate cell division orientation in the prostate.