PMID- 25819401 OWN - NLM STAT- MEDLINE DCOM- 20160412 LR - 20181113 IS - 1348-4400 (Electronic) IS - 0916-8818 (Print) IS - 0916-8818 (Linking) VI - 61 IP - 3 DP - 2015 TI - Status of autophagy, lysosome activity and apoptosis during corpus luteum regression in cattle. PG - 229-36 LID - 10.1262/jrd.2014-135 [doi] AB - Corpus luteum (CL) regression is required during the estrous cycle. During CL regression, luteal cells stop producing progesterone and are degraded by apoptosis. However, the detailed mechanism of CL regression in cattle has not been fully elucidated. The aim of this study was to evaluate autophagy, lysosome activity, and apoptosis during CL regression in cattle. The expression of autophagy-related genes (LC3alpha, LC3beta, Atg3, and Atg7) and the protein LC3-II was significantly higher in the late CL than in the mid CL. In addition, autophagy activity was significantly increased in the late CL. Moreover, gene expression of the autophagy inhibitor mammalian target of rapamycin (mTOR) was significantly lower in the late CL than in the mid CL. Lysosome activation and expression of cathepsin-related genes (CTSB, CTSD, and CTSZ) showed significant increases in the late CL and were associated with an increase in cathepsin B protein. In addition, mRNA expression and activity of caspase 3 (CASP3), an apoptotic enzyme, were significantly higher in the late CL than in the mid CL. These results suggest simultaneous upregulation of autophagy-related factors, lysosomal enzymes and apoptotic mediators, which are involved in regression of the bovine CL. FAU - Aboelenain, Mansour AU - Aboelenain M AD - Laboratory of Animal Breeding and Reproduction, Department of Animal Science, Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, Japan. FAU - Kawahara, Manabu AU - Kawahara M FAU - Balboula, Ahmed Zaky AU - Balboula AZ FAU - Montasser, Abd El-Monem AU - Montasser Ael-M FAU - Zaabel, Samy Mowaed AU - Zaabel SM FAU - Okuda, Kiyoshi AU - Okuda K FAU - Takahashi, Masashi AU - Takahashi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150328 PL - Japan TA - J Reprod Dev JT - The Journal of reproduction and development JID - 9438792 RN - 0 (RNA, Messenger) RN - 4G7DS2Q64Y (Progesterone) RN - EC 3.4.18.1 (Cathepsin Z) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.1 (Cathepsin B) RN - EC 3.4.23.5 (Cathepsin D) SB - IM MH - Animals MH - *Apoptosis MH - *Autophagy MH - Caspase 3/metabolism MH - Cathepsin B/metabolism MH - Cathepsin D/metabolism MH - Cathepsin Z/metabolism MH - Cattle MH - Corpus Luteum/*physiology MH - Estrous Cycle MH - Female MH - Gene Expression Profiling MH - Gene Expression Regulation MH - Immunohistochemistry MH - Luteal Cells/cytology MH - *Luteolysis MH - Lysosomes/*metabolism MH - Progesterone/metabolism MH - RNA, Messenger/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction PMC - PMC4498366 EDAT- 2015/03/31 06:00 MHDA- 2016/04/14 06:00 PMCR- 2015/06/01 CRDT- 2015/03/31 06:00 PHST- 2015/03/31 06:00 [entrez] PHST- 2015/03/31 06:00 [pubmed] PHST- 2016/04/14 06:00 [medline] PHST- 2015/06/01 00:00 [pmc-release] AID - 2014-135 [pii] AID - 10.1262/jrd.2014-135 [doi] PST - ppublish SO - J Reprod Dev. 2015;61(3):229-36. doi: 10.1262/jrd.2014-135. Epub 2015 Mar 28.