Human periprostatic adipose tissue: Secretome from patients with prostate cancer or benign prostate hyperplasia

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Abstract

Background/Aim: Periprostatic adipose tissue (PPAT) directs tumour behaviour. Microenvironment secretome provides information related to its biology. This study was performed to identify secreted proteins by PPAT, from both prostate cancer and benign prostate hyperplasia (BPH) patients. Patients and Methods: Liquid chromatography-mass spectrometry-based proteomic analysis was performed in PPAT-conditioned media (CM) from patients with prostate cancer (CMs-T) (stage T3: CM-T3, stage T2: CM-T2) or benign disease (CM-BPH). Results: The highest number and diversity of proteins was identified in CM-T3. Locomotion was the biological process mainly associated to CMs-T and reproduction to CM-T3. Immune responses were enriched in CMs-T. Extracellular matrix and structural proteins were associated to CMs-T. CM-T3 was enriched in proteins with catalytic activity and CM-T2 in proteins with defense/immunity activity. Metabolism and energy pathways were enriched in CM-T3 and those with immune system functions in CMs-T. Transport proteins were enriched in CM-T2 and CM-BPH. Conclusion: Proteins and pathways reported in this study could be useful to distinguish stages of disease and may become targets for novel therapies.

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Sacca, P. A., Mazza, O. N., Scorticati, C., Vitagliano, G., Casas, G., & Calvo, J. C. (2019). Human periprostatic adipose tissue: Secretome from patients with prostate cancer or benign prostate hyperplasia. Cancer Genomics and Proteomics, 16(1), 29–58. https://doi.org/10.21873/cgp.20110

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