Abstract
Prostate function is critical for male fertility; nevertheless, prostate was so far overlooked in reproductive toxicity assays. Within the EU project ReProTect, the human prostate cell line LNCaP was utilized to identify molecules targeting prostate function by the integrated assessment of cell viability (MTS assay) and prostate-specific antigen (PSA) secretion as specific marker; a training set – five (anti)androgenic chemicals – and a ReProTect feasibility set – ten chemicals – were used. Several compounds reduced PSA only at cytotoxic concentrations. Androgens (DHT, MT) markedly increased PSA as did the herbicide glufosinate ammonium, not known as androgen agonist. Anti-androgens (2OH-flutamide, linuron, vinclozolin, di- n-butyl phthalate) also increased PSA, but the effect of magnitude was much lower than for androgens. The ER-binder bisphenol A reduced PSA, while increasing cell viability. At this stage, the approach can identify chemicals able to interfere with prostate function: further refinements may allow to include prostate effects in reproductive toxicity in vitro testing.
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