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- W4248652285 abstract "Neuroendocrine (NE) cells are found in prostate tumors, and their incidence is considered a promising prognostic indicator for the development of androgen-independent disease. NE cells are derived from non-NE prostate cancer cells and secrete factors that can act in a paracrine manner to stimulate the survival, growth, motility, and metastatic potential of prostatic carcinoma cells. Factors such as IL-6, epinephrine, and forskolin induce NE differentiation in prostate cancer cells; the mechanisms involve increases in intracellular cAMP, protein kinase A (PKA) activation and reduced intracellular calcium levels. Transcription factors implicated in the acquisition of NE characteristics by prostate cancer cells include STAT3, CREB, EGR1, c-fos, and NF-κB. Expression of Chromogranin A, neuron-specific enolase, bcl-2, and the androgen receptor are modulated during NE differentiation and serve as molecular markers for NE cells. Most importantly, NE cells secrete neuropeptides, such as bombesin, neurotensin, PTHrP, serotonin, and calcitonin, which trigger growth and survival responses in androgen-independent prostate cancer cells. Prostate cancer cell receptors that play a role in these processes include the gastrin-releasing peptide (GRP) receptor, neurotensin receptors, and the epidermal growth-factor receptor (EGFR). Signal-transduction molecules activated by these neuropeptides include Src, focal adhesion kinase (FAK), ERK, and PI3K/Akt, with subsequent activation of Elk-1, NF-κB, and c-myc transcription factors. A multitude of genes are then expressed by prostate cancer cells, which are involved in proliferation, anti-apoptosis, migration, metastasis, and angiogenesis. Targeting of these pathways at multiple levels can be exploited to inhibit the process by which NE cells contribute to the progression of androgen-independent, treatment-refractory prostate cancer." @default.
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- W4248652285 date "2004-01-01" @default.
- W4248652285 modified "2023-09-26" @default.
- W4248652285 title "Neuroendocrine Cells in Prostate Cancer" @default.
- W4248652285 doi "https://doi.org/10.1615/critreveukargeneexpr.v14.i4.40" @default.
- W4248652285 hasPublicationYear "2004" @default.
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