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Identification of intermediate cell types by keratin expression in the developing human prostate
Y Xue1, F Smedts, F M Debruyne
1Department of Urology, University Hospital Nijmegen, The Netherlands.
The Prostate
|March 13, 1998
Summary
Intermediate cells, crucial for prostate development and cancer, are present in early fetal stages. Their identification suggests a regulatory role in the hierarchical differentiation of prostate cells from basal to luminal types.
Area of Science:
- Urology
- Developmental Biology
- Cell Biology
Background:
- The adult human prostate contains basal, luminal, and intermediate exocrine cells.
- Intermediate cells are implicated in normal prostate growth and neoplastic transformation.
- The presence of intermediate cells during early prostate development remains unclear.
Purpose of the Study:
- To investigate the presence and characteristics of intermediate cells in early human prostate development.
- To utilize specific keratin antibodies for cell type identification.
- To understand the potential role of intermediate cells in prostate morphogenesis.
Main Methods:
- Immunohistochemical staining of autoptic prostate tissue.
- Analysis of 11 prepubertal and 5 adult normal prostates.
- Use of four keratin antibodies to detect basal, luminal, and intermediate cell phenotypes.
Main Results:
- Fetal prostate cells showed limited morphological differentiation.
- Basally located cells exhibited basal-cell keratin phenotypes.
- Cells with luminal localization displayed luminal or intermediate cell keratin phenotypes.
Conclusions:
- Cells with an intermediate keratin phenotype are identifiable in early prostate development.
- The abundance of these cells supports a differentiation pathway from basal to luminal cells.
- Early fetal presence suggests intermediate cells have a regulatory function in prostate development.