The variant mRNA isoform of human metastasis gene (CD44V) detected in the cell lines of human hepatocellular carcinoma.
The interaction of the cell surface receptor CD44 molecular with its ligands (addressin, extracellular matrix etc.,) plays an important role in fulfilling the lymphocyte homing and immune reaction. Recently alternatively spliced products of CD44 gene are found to be involved in tumor metastasis as well. Our report found that CD44 prototype RNA (CD44S) was present in all five tumor cell lines. Isoform CD44 RNA (CD44V) was recognized in three metastasized hepatocellular carcinoma cell lines, J5, HCC36, HEP3B. In addition, the J5 CD44 RNA isoform expressed two distinct transcripts which are of the same size as MDA-231 breast tumor cell line. The MDA-231 CD44 RNA variant (CD44V) has been confirmed to contain metastasis domain 4 and 5. It is implicated that the alternative RNA splicing may also play a major role in hepatocellular carcinoma metastasis.
Harn
H J
HJ
Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan.
Ho
L I
LI
Yu
C P
CP
Wang
M W
MW
Lee
H S
HS
Lin
J J
JJ
Lee
W H
WH
Isola
N R
NR
Cooper
D L
DL
D001483:Base Sequence; D006528:Carcinoma, Hepatocellular / Q000737:chemistry / Q000235:genetics* / Q000473:pathology*; D002352:Carrier Proteins / Q000235:genetics*; D004273:DNA, Neoplasm / Q000235:genetics; D005091:Exons; D014644:Genetic Variation; D006801:Humans; D018960:Hyaluronan Receptors; D007536:Isomerism; D008113:Liver Neoplasms / Q000737:chemistry / Q000235:genetics* / Q000473:pathology*; D008969:Molecular Sequence Data; D009362:Neoplasm Metastasis / Q000235:genetics; D009360:Neoplastic Cells, Circulating; D010641:Phenotype; D012333:RNA, Messenger / Q000032:analysis* / Q000235:genetics; D011956:Receptors, Cell Surface / Q000235:genetics*; D016201:Receptors, Lymphocyte Homing / Q000235:genetics*; D014158:Transcription, Genetic; D014407:Tumor Cells, Cultured
D002352:Carrier Proteins; D004273:DNA, Neoplasm; D018960:Hyaluronan Receptors; D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D016201:Receptors, Lymphocyte Homing