CD66 identifies the biliary glycoprotein (BGP) adhesion molecule: cloning, expression, and adhesion functions of the BGPc splice variant.
CD66 identifies the biliary glycoprotein (BGP) adhesion molecule: cloning, expression, and adhesion functions of the BGPc splice variant.
复制标题
CD66 识别胆汁糖蛋白 (BGP) 粘附分子:BGPc 剪接变体的克隆、表达和粘附功能。
作者:
Suzanne M. Watt;Jon Fawcett;Sarah J Murdoch;A. M. Teixeira;Steve E Gschmeissner;M. A. N. Nasser;David L Hajibagheri;Simmons
Within the hematopoietic lineage, the monoclonal antibody (MoAb) CD66 reacts with cells of the granulocyte lineage, but not with the majority of progenitor cells from human bone marrow. Our previous studies have shown that CD66 binds specifically to at least three carcinoembryonic antigen (CEA) superfamily members, ie, CEA itself, nonspecific cross-reacting antigen (NCA), and CGM1, but not to CGM6 (NCA-95). In this report, we show that CD66 will also identify the biliary glycoproteins (BGP). A full-length cDNA for the BGPc molecule (a cytoplasmic splice variant of BGPa) was isolated by expression cloning using the CD66 MoAbs. This protein has an identical extracellular and transmembrane sequence to BGPa with one N-terminal IgV like domain, three IgC-like extracellular domains (A1, B1, and A2), plus a transmembrane domain, but the cytoplasmic domain is spliced by 53 nucleotides. Reverse transcriptase-polymerase chain reaction experiments show that this splice variant can be detected in colonic carcinoma cell lines, in primary colonic adenocarcinomas, and in myeloid and B-cell lines to varying degrees. Quantitative analyses of BGPc RNA expression by RNase protection indicate that abundant levels occur only in the colonic, but not in the hematopoietic, cell lines tested. Studies presented here show that BGPc mediates homotypic adhesion and suggest that the cytoplasmic splicing does not alter the initial homotypic adhesion properties of BGPa.
登录
查看更多内容
DOI:
10.1073/pnas.85.13.4648
发表时间:
1988-07-01
影响因子:
11.1
作者:
HEFTA, SA;HEFTA, LJF;SHIVELY, JE
通讯作者:
SHIVELY, JE
DOI:
10.1073/pnas.82.22.7575
发表时间:
1985
影响因子:
11.1
作者:
Winter,E;Yamamoto,F;Almoguera,C;Perucho,M
通讯作者:
Perucho,M
影响因子:
56.9
作者:
BEVILACQUA, MP;STENGELIN, S;SEED, B
通讯作者:
SEED, B
影响因子:
4.4
作者:
K. Skubitz;T. Ducker;S. Goueli
通讯作者:
K. Skubitz;T. Ducker;S. Goueli
影响因子:
11.2
作者:
Takahashi,H;Okai,Y;Paxton,RJ;Hefta,LJ;Shively,JE
通讯作者:
Shively,JE