PMID- 32212454 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220413 IS - 1009-3591 (Print) IS - 1009-3591 (Linking) VI - 24 IP - 9 DP - 2018 Sep TI - [Expressions of pannexin proteins in I-10 Leydig tumor cells and TM3 Leydig cells and their regulatory effect on the channel function in mice]. PG - 776-781 AB - OBJECTIVE: To investigate the expressions of the pannexin (Panx) proteins in I-10 Leydig tumor cells and TM3 Leydig cells and their regulatory effect on the Panx channel function in mice. METHODS: The expressions of the Panx-1 and Panx-2 proteins in the mouse Leydig tumor cells were determined by Western blot. The I-10 Leydig tumor cells were treated with carbenoxolone (CBX) at 100 mumol/L or probenecid (PBN) at 200 mumol/L, the fluorescence resonance energy transfer (FRET) detected by time-lapse fluorescence imaging, and the extracellular adenosine 5'-triphosphate (eATP) level measured with the commercial detection kit. Molecular biological methods were used to interfere with shRNA and overexpress mPanx-1 the Panx-1 gene and regulate the expression and function of the Panx-1 protein. RESULTS: The expressions of Panx-1 ([289.5 +/- 55.8]%) and Panx-2 ([264.5 +/- 24.6]%) were significantly increased in the I-10 Leydig tumor cells as compared with those in the normal TM3 Leydig cells (both P < 0.05). FRET was remarkably reduced after treated with CBX ([87.5 +/- 17.7]%) and PBN ([89.3 +/- 14.3]%) in comparison with that in the control group (both P < 0.01). At 8, 16 and 24 hours, the eATP level was decreased by (57.3 +/- 7.2)%, (56.4 +/- 9.6)% and (63.4 +/- 6.4)% in the CBX group (P < 0.01) and (61.7 +/- 2.5)%, (35.8 +/- 1.6)% and (13.5 +/- 8.3)% in the PBN group (P < 0.01). Molecular biological treatment down-regulated the expression of Panx-1 by (38.3 +/- 5.2)% and (31.8 +/- 5.1)% in the shRNA1 and shRNA2 groups, respectively (both P < 0.01), but up-regulated that of Panx-1 by (128.4 +/- 7.5)% in the mPanx-1 group (P < 0.01) as compared with the negative control. FRET was reduced by (72.4 +/- 39.4)% in the shRNA group (P < 0.01) and the eATP level by (14.7 +/- 0.1)%, (13.7 +/- 0.3)% and (13.1 +/- 0.3)% at 8, 16 and 24 hours, respectively (P < 0.01) while FRET elevated by (122.5 +/- 17.1)% in the mPanx-1 group (P < 0.01) and the eATP level by (886.1 +/- 82.1)%, (885.8 +/- 83.3)% and (841.5 +/- 21.8)% at 8, 16 and 24 hours, respectively (P < 0.01). CONCLUSIONS: The expressions of Panx-1 and Panx-2 are increased in I-10 mouse Leydig tumor cells, and inhibiting the Panx channel with CBX, PBN and shRNA reduces FRET and the eATP level in the I-10 cells. FAU - Liu, Hao-Feng AU - Liu HF AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Dong, Shu-Ying AU - Dong SY AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Yuan, Min AU - Yuan M AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Wang, Xue-Ru AU - Wang XR AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Wu, Dan-Dan AU - Wu DD AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Fan, Wei-Zhen AU - Fan WZ AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. FAU - Tong, Xu-Hui AU - Tong XH AD - Faculty of Pharmacy, School of Pharmacology, Bengbu Medical College, Bengbu, Anhui 233030, China. LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Nan Ke Xue JT - Zhonghua nan ke xue = National journal of andrology JID - 101093592 SB - IM OTO - NOTNLM OT - adenosine 5'-triphosphate OT - carbenoxolone OT - mouse OT - probenecid OT - pannexin channel EDAT- 2018/09/01 00:00 MHDA- 2018/09/01 00:01 CRDT- 2020/03/27 06:00 PHST- 2020/03/27 06:00 [entrez] PHST- 2018/09/01 00:00 [pubmed] PHST- 2018/09/01 00:01 [medline] PST - ppublish SO - Zhonghua Nan Ke Xue. 2018 Sep;24(9):776-781.