Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Localization and possible role of membrane type metalloproteinase and tissue inhibitors of metalloproteinase-1 in early stages of placentation
AU - Liu, Y X
AU - Hu, Z Y
AU - Feng, Q
AU - Gao, H J
AU - Liu, K
AU - Ockleford, C D
PY - 2000/8
Y1 - 2000/8
N2 - Human placental tissues from the first and second trimesters of gestation have been investigated using riboprobe in situ hybridisation of mRNA sequences coding for membrane type metalloproteinase (MT-1-MMP) and tissue inhibitors of metalloproteinase-l (TIMP-1). Results show that (i) both mRNAs express at a relatively high level in the chorion laeve trophoblast cells and the adjacent decidual cells of fetal membrane; (ii) the most abundant expression of the two mRNAs was found in the extravillous trophoblast between Rohrs and Nitabuch striae of basal plate, trophoblast shell and gland cells of the decidua; (iii) isolated or small groups of cytotrophoblast cells in the chorionic villi and in the cells lining arterioles in decidua and stem villi also expressed both MT-1-MMP and TIMP-1 at defferent extents. The data suggest that the coordinated expression of the MT-MMP and its inhibitor TIMP in defferent cells of the placental tissue may play an essential role in trophoblast invasion and angiogenesis related to placentation in the first two trimesters of gestation. They may also have an ability to effect separation of fetal from material tissue at a favorable junctional site during parturition.
AB - Human placental tissues from the first and second trimesters of gestation have been investigated using riboprobe in situ hybridisation of mRNA sequences coding for membrane type metalloproteinase (MT-1-MMP) and tissue inhibitors of metalloproteinase-l (TIMP-1). Results show that (i) both mRNAs express at a relatively high level in the chorion laeve trophoblast cells and the adjacent decidual cells of fetal membrane; (ii) the most abundant expression of the two mRNAs was found in the extravillous trophoblast between Rohrs and Nitabuch striae of basal plate, trophoblast shell and gland cells of the decidua; (iii) isolated or small groups of cytotrophoblast cells in the chorionic villi and in the cells lining arterioles in decidua and stem villi also expressed both MT-1-MMP and TIMP-1 at defferent extents. The data suggest that the coordinated expression of the MT-MMP and its inhibitor TIMP in defferent cells of the placental tissue may play an essential role in trophoblast invasion and angiogenesis related to placentation in the first two trimesters of gestation. They may also have an ability to effect separation of fetal from material tissue at a favorable junctional site during parturition.
KW - placenta
KW - trophoblast
KW - basal plate
KW - fetal membrane
KW - MT-1-MMP
KW - TIMP-1
KW - in situ hybridization
KW - PLASMINOGEN-ACTIVATOR
KW - MATRIX
KW - EXPRESSION
KW - MECHANISMS
KW - PREGNANCY
KW - MT1-MMP
KW - SURFACE
KW - MMP-2
KW - CELLS
U2 - 10.1007/BF02898893
DO - 10.1007/BF02898893
M3 - Journal article
VL - 45
SP - 1484
EP - 1489
JO - Chinese Science Bulletin
JF - Chinese Science Bulletin
SN - 1001-6538
IS - 16
ER -