Effects of T-2 toxin on the regulation of steroidogenesis in mouse Leydig cells.

Abstract:

:T-2 toxin is one of the mycotoxins, a group of type A trichothecenes produced by several fungal genera including Fusarium species, which may lead to the decrease of testosterone secretion in primary Leydig cells derived from mouse testis. The previous study demonstrated T-2 toxin decrease the testosterone biosynthesis in the primary Leydig cells derived from the mouse testis directly. In this study, we further examined the direct biological effects of T-2 toxin on the process of steroidogenesis, primarily in Leydig cells of mice. Leydig cells of mature mouse were purified by Percoll gradient centrifugation and the cell purity was determined by 3β-hydroxysteroid dehydrogenase (3β-HSD) staining. To examine the decrease in T-2 toxin-induced testosterone secretion, we measured the transcription level of three key steroidogenic enzymes including 3β-HSD-1, cytochrome P450 side-chain cleavage (P450scc) enzyme, and steroidogenic acute regulatory (StAR) protein in T-2 toxin/human chorionic gonadotropin (hCG) co-treated cells. Our previous study showed that T-2 toxin (10(-7), 10(-8), and 10(-9) M) significantly suppressed hCG (10 ng/ml)-induced testosterone secretion. The studies demonstrated that the suppressive effect is correlated with a decrease in the level of transcription of 3β-HSD-1, P450scc, and StAR (p < 0.05).

journal_name

Toxicol Ind Health

authors

Yang JY,Zhang YF,Li YX,Guan GP,Kong XF,Liang AM,Ma KW,Da Li G,Bai XF

doi

10.1177/0748233715590516

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

1801-7

issue

10

eissn

0748-2337

issn

1477-0393

pii

0748233715590516

journal_volume

32

pub_type

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