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Updated: Jun 5, 2026
Quantitation of Protein Expression and Co-localization Using Multiplexed Immuno-histochemical Staining and Multispectral Imaging
Published on: April 8, 2016
Immunohistochemical staining of radixin and moesin in prostatic adenocarcinoma
Tanner L Bartholow1, Uma R Chandran2, Michael J Becich2
1University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
Background:
Some members of the Protein 4.1 superfamily are believed to be involved in cell proliferation and growth, or in the regulation of these processes. While the expression levels of two members of this family, radixin and moesin, have been studied in many tumor types, to our knowledge they have not been investigated in prostate cancer.
Methods:
Tissue microarrays were immunohistochemically stained for either radixin or moesin, with the staining intensities subsequently quantified and statistically analyzed using One-Way ANOVA or nonparametric equivalent with subsequent Student-Newman-Keuls tests for multiple comparisons. There were 11 cases of normal donor prostates (NDP), 14 cases of benign prostatic hyperplasia (BPH), 23 cases of high-grade prostatic intraepithelial neoplasia (HGPIN), 88 cases of prostatic adenocarcinoma (PCa), and 25 cases of normal tissue adjacent to adenocarcinoma (NAC) analyzed in the microarrays.
Results:
NDP, BPH, and HGPIN had higher absolute staining scores for radixin than PCa and NAC, but with a significant difference observed between only HGPIN and PCa (p = < 0.001) and HGPIN and NAC (p = 0.001). In the moesin-stained specimens, PCa, NAC, HGPIN, and BPH all received absolute higher staining scores than NDP, but the differences were not significant. Stage 4 moesin-stained PCa had a significantly reduced staining intensity compared to Stage 2 (p = 0.003).
Conclusions:
To our knowledge, these studies represent the first reports on the expression profiles of radixin and moesin in prostatic adenocarcinoma. The current study has shown that there were statistically significant differences observed between HGPIN and PCa and HGPIN and NAC in terms of radixin expression. The differences in the moesin profiles by tissue type were not statistically significant. Additional larger studies with these markers may further elucidate their potential roles in prostatic neoplasia progression.
Insights
Radixin expression is significantly lower in prostate cancer (PCa) compared to high-grade prostatic intraepithelial neoplasia (HGPIN). Moesin levels did not significantly differ between tissue types, though advanced PCa showed reduced moesin.
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Protein 4.1 superfamily members are implicated in cell growth regulation.
- Radixin and moesin expression is documented in various tumors but not yet in prostate cancer.
Purpose of the Study:
- To investigate the expression profiles of radixin and moesin in prostate cancer tissues.
- To determine if radixin and moesin expression differs between normal, hyperplastic, pre-neoplastic, and cancerous prostate tissues.
Main Methods:
- Immunohistochemical staining of tissue microarrays for radixin and moesin.
- Quantification of staining intensities and statistical analysis using ANOVA and Student-Newman-Keuls tests.
- Analysis included normal donor prostates (NDP), benign prostatic hyperplasia (BPH), high-grade prostatic intraepithelial neoplasia (HGPIN), prostate adenocarcinoma (PCa), and normal adjacent tissue (NAC).
Main Results:
- Radixin staining was significantly lower in PCa and NAC compared to HGPIN (p < 0.001).
- Moesin staining was higher in PCa, NAC, HGPIN, and BPH than NDP, but without statistical significance.
- Stage 4 PCa exhibited significantly reduced moesin staining intensity compared to Stage 2 PCa (p = 0.003).
Conclusions:
- This study provides the first report on radixin and moesin expression in prostate adenocarcinoma.
- Significant differences in radixin expression were found between HGPIN and PCa/NAC.
- Moesin expression differences were not statistically significant across tissue types, warranting further investigation in larger cohorts.
