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Ochratoxin A suppresses proliferation of Sertoli and Leydig cells in mice.
Medical Mycology ( IF 2.9 ) Pub Date : 2019-03-06 , DOI: 10.1093/mmy/myz016
Hahyun Park 1 , Hee Seo Park 1 , Whasun Lim 2 , Gwonhwa Song 1
Affiliation  

Ochratoxin A (OTA) is a mycotoxin originating from Penicillium and Aspergillus. In addition to toxic effects in various tissues and cells, including neurons, immune cells, hepatocytes, and nephrons, it also causes carcinogenesis and teratogenesis. Although the negative effects of OTA with respect to the pathogenesis of diseases and the malfunction of various organs have been studied widely, the biological signaling mechanisms in testicular cells are less well known. Therefore, we determined the hazardous effect of OTA in two types of testicular cells: TM3 (mouse Leydig cells) and TM4 (mouse Sertoli cells). Treatment with OTA led to a significant decrease in the proliferation of both cell lines, as revealed by an increased proportion of cells in the sub-G1 phase. In addition, the phosphorylation of signaling molecules belonging to the PI3K (Akt, P70S6K, and S6) and MAPK (ERK1/2 and JNK) pathways was regulated by OTA in a dose-dependent manner in TM3 and TM4 cells. Furthermore, the combination treatment of OTA and signaling inhibitors (LY294002, U0126, or SP600125) exerted synergistic antiproliferative effects in TM3 and TM4 cells. OTA also reduced the concentration of calcium ions in the cytosol and mitochondria, which disrupted the calcium homeostasis necessary for maintaining the normal physiological functions of testicular cells. In conclusion, the results of the present study demonstrate the mechanism underlying the antiproliferative effects of OTA in mouse testicular cells. Exposure to OTA may result in abnormal sperm maturation and the failure of spermatogenesis, which leads to male infertility.

中文翻译:

ch曲霉毒素A抑制小鼠Sertoli和Leydig细胞的增殖。

ch曲霉毒素A(OTA)是霉菌毒素,起源于青霉和曲霉。除了对各种组织和细胞(包括神经元,免疫细胞,肝细胞和肾单位)产生毒性作用外,它还会引起癌变和致畸。尽管已经广泛研究了OTA对疾病的发病机理和各种器官的功能衰竭的负面影响,但是睾丸细胞中的生物信号传导机制尚不为人所知。因此,我们确定了OTA对两种类型的睾丸细胞的危害作用:TM3(小鼠Leydig细胞)和TM4(小鼠Sertoli细胞)。用OTA处理可导致两种细胞系的增殖显着降低,这在sub-G1期细胞中所占比例有所增加。此外,属于PI3K(Akt,P70S6K和S6)和MAPK(ERK1 / 2和JNK)途径是由OTA在TM3和TM4细胞中以剂量依赖性方式调节的。此外,OTA和信号抑制剂(LY294002,U0126或SP600125)的联合治疗在TM3和TM4细胞中发挥了协同的抗增殖作用。OTA还降低了细胞溶质和线粒体中钙离子的浓度,从而破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。和S6)和MAPK(ERK1 / 2和JNK)途径受OTA调节,在TM3和TM4细胞中呈剂量依赖性。此外,OTA和信号抑制剂(LY294002,U0126或SP600125)的联合治疗在TM3和TM4细胞中发挥了协同的抗增殖作用。OTA还降低了细胞溶质和线粒体中钙离子的浓度,从而破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。和S6)和MAPK(ERK1 / 2和JNK)途径受OTA调节,在TM3和TM4细胞中呈剂量依赖性。此外,OTA和信号抑制剂(LY294002,U0126或SP600125)的联合治疗在TM3和TM4细胞中发挥了协同的抗增殖作用。OTA还降低了细胞溶质和线粒体中钙离子的浓度,从而破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。OTA和信号抑制剂(LY294002,U0126或SP600125)的联合治疗在TM3和TM4细胞中发挥了协同的抗增殖作用。OTA还降低了细胞溶质和线粒体中钙离子的浓度,从而破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。OTA和信号抑制剂(LY294002,U0126或SP600125)的联合治疗在TM3和TM4细胞中发挥了协同的抗增殖作用。OTA还降低了细胞溶质和线粒体中钙离子的浓度,从而破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。这破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。这破坏了维持睾丸细胞正常生理功能所必需的钙稳态。总之,本研究的结果证明了OTA在小鼠睾丸细胞中抗增殖作用的机制。接触OTA可能会导致精子异常成熟和生精失败,从而导致男性不育。
更新日期:2020-04-17
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