Evaluation of gastrin-releasing peptide receptor, prostate-specific membrane antigen, and neurotensin receptor 1 as potential biomarkers for accurate prostate cancer stratified diagnosis
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View abstract on PubMed
Summary
This summary is machine-generated.This study compared gastrin-releasing peptide receptor (GRPR), prostate-specific membrane antigen (PSMA), and neurotensin receptor 1 (NTR1) expression in prostate cancer (PCa). High PSMA expression correlated with poorer survival, while PET/CT tracers showed promise for PCa detection and grading.
Area Of Science
- Oncology
- Radiochemistry
- Molecular Imaging
Background
- Single-target PET imaging for GRPR, PSMA, or NTR1 in prostate cancer (PCa) exists.
- The comparative performance of these targets throughout PCa progression remains unclear.
- This study evaluates GRPR, PSMA, and NTR1 expression in prostatic intraepithelial neoplasia (PIN), PCa, and lymph node metastasis.
Purpose Of The Study
- To compare the expression levels of GRPR, PSMA, and NTR1 in PIN, PCa, and metastatic tissues.
- To assess the correlation between the expression of these markers and PCa clinicopathological parameters.
- To investigate the utility of dual-tracer PET/CT imaging for PCa detection and Gleason score prediction.
Main Methods
- Immunohistochemistry was used to evaluate GRPR, PSMA, and NTR1 expression in 34 PIN, 171 PCa, and 22 lymph node metastasis tissues.
- Correlation analysis was performed between marker expression and PCa clinicopathological parameters.
- Sixteen PCa patients underwent dual-tracer (68Ga-NOTA-RM26 and 68Ga-NOTA-PSMA617) PET/CT imaging.
Main Results
- GRPR expression was highest in PIN, while NTR1 expression was highest in primary PCa.
- High PSMA expression was linked to shorter progression-free and overall survival in PCa patients.
- PET/CT tracer uptake correlated with Gleason score, with 68Ga-NOTA-PSMA617 higher in high-GS tumors and 68Ga-NOTA-RM26 higher in low-GS tumors.
Conclusions
- PSMA, GRPR, and NTR1 represent novel biomarkers for PET/CT imaging in PCa.
- These markers show potential for non-invasive detection of PCa.
- The study suggests these imaging agents may aid in predicting PCa Gleason grade.
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