Abstract：
:Cancer-related axonogenesis and neurogenesis are recently described biologic phenomena. Our previously published data showed that nerve density and the number of neurons in the parasympathetic ganglia are increased in prostate cancer (PCa) and associated with aggressive disease. Tissue microarrays were constructed from 640 radical prostatectomy specimens with PCa. Anti-protein gene product 9.5 (PGP 9.5) antibodies were used to identify and quantify nerve density. Protein expression was objectively analyzed using deconvolution imaging, image segmentation, and image analysis. Data were correlated with clinicopathological variables and tissue biomarkers available in our database. Nerve density, as measured by PGP 9.5 expression, had a weak but significant positive correlation with the lymph node status (ρ = 0.106; P = .0275). By Cox univariate analysis, PGP 9.5 was a predictor of time to biochemical recurrence, but not on multivariate analysis. Increased nerve density correlated with increased proliferation of PCa cells. It also correlated with expression of proteins involved in survival pathways (Phosphorylated alpha serine/threonine-protein kinase, NFκB, GSK-2, PIM-2, c-Myc, SKP-2, SRF, P27n, PTEN), with increased levels of hormonal regulation elements (androgen receptor, estrogen receptor α), and coregulators and repressors (SRC-1, SRC-2, AIB-1, DAX). Axonogenesis is a recently described phenomenon of paramount importance in the biology of PCa. Although the degree of axonogenesis is predictive of aggressive behavior in PCa, it does not add to the information present in current models on multivariate analysis. We present data that corroborate that axonogenesis is involved in biologic processes such as proliferation of PCa, through activation of survival pathways and interaction with hormonal regulation.
journal_name
Hum Patholjournal_title
Human pathologyauthors
Olar A,He D,Florentin D,Ding Y,Ayala Gdoi
10.1016/j.humpath.2014.02.009subject
Has Abstractpub_date
2014-07-01 00:00:00pages
1358-64issue
7eissn
0046-8177issn
1532-8392pii
S0046-8177(14)00088-4journal_volume
45pub_type
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