Expression of adamalysin 19/ADAM19 in the endometrium and placenta of rhesus monkey (Macaca mulatta) during early pregnancy.
A disintegrin and metalloproteinase (ADAM) 19 may contribute to multiple processes including proteolysis, adhesion and intracellular signalling. These processes are also critical for embryo implantation. The aim of this study was to investigate the spatio-temporal expression of the ADAM19 in rhesus monkey uteri on days 12, 18 and 26 of pregnancy. The results showed that in the cloned monkey 346 bp ADAM19 gene fragment and 114 amino acid residues were 98 and 100% identical to those of human homologues, respectively. In-situ hybridization confirmed that the ADAM19 mRNA was located in the luminal and glandular epithelium on day 12 of pregnancy. On day 18 of pregnancy, strong signals of the ADAM19 mRNA were detected in the placental villi, trophoblastic column and glandular epithelium near the myometrium. Moderate expression of the ADAM19 mRNA was seen in the trophoblastic shell and stromal cells. The placental villi and trophoblastic column expressed abundant ADAM19 mRNA, and ADAM19 transcripts were also detected in the trophoblastic shell and fetal-maternal border on day 26 of pregnancy. The expression pattern of the ADAM19 protein was similar to its transcript, but signals for the ADAM19 protein in the stromal cells and trophoblastic shell increased more than its mRNA on day 18 of pregnancy. Statistical analysis demonstrated that the expression level of ADAM19 significantly increased on day 18 of pregnancy. These data suggest that the ADAM19 may be involved in the key processes of glandular secretion, trophoblast invasion and degradation of extracellular matrix during early pregnancy.
Wang
Hong-Xing
HX
State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China.
Zhao
Yun-Ge
YG
Wang
Hong-Mei
HM
Yang
Qing
Q
Lin
Hai-Yan
HY
Sang
Qing-Xiang Amy
QX
Zhu
Cheng
C
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D004717:Endometrium / Q000737:chemistry / Q000201:enzymology*; D005260:Female; D006801:Humans; D008253:Macaca mulatta; D008666:Metalloendopeptidases / Q000032:analysis / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D010920:Placenta / Q000737:chemistry / Q000201:enzymology*; D011247:Pregnancy / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000032:analysis / Q000378:metabolism
D012333:RNA, Messenger; D008666:Metalloendopeptidases