Expression of cripto in human pancreatic tumors.
The expression of cripto gene product was examined immunohistochemically in 45 surgically resected pancreatic tumors, including 32 invasive ductal carcinomas, 4 intraductal papillary adenocarcinomas, 4 intraductal papillary adenomas, 2 mucinous cystadenomas, 2 islet cell tumors, and one solid and cystic tumor, and compared with that in 32 areas of accompanying chronic pancreatitis present in the cases of invasive ductal carcinomas and 5 non-tumorous areas of pancreas without pancreatitis. All pancreatic ductal tumors including adenomas and carcinomas showed positive staining with no difference in terms of staining intensity among intraductal tumors and invasive carcinomas with or without mucin hypersecretion. Islet cell tumors were positively stained but the solid and cystic tumor was negative. Duct epithelial cells and acinar cells were negative but islet cells were positive in the pancreas tissues without pancreatitis. Cells arranged in duct-like structures in areas of accompanying chronic pancreatitis were positively stained. The results suggest that cripto expression might be associated with a growth advantage of tumor cells and also with differentiation to form duct-like structures.
Tsutsumi
M
M
Department of Oncological Pathology, Cancer Center, Nara Medical University.
Yasui
W
W
Naito
A
A
Ohashi
K
K
Kobayashi
E
E
Noguchi
O
O
Horiguchi
K
K
Okita
S
S
Tsujiuchi
T
T
Kitada
H
H
D014408:Biomarkers, Tumor / Q000235:genetics*; D002277:Carcinoma / Q000737:chemistry / Q000235:genetics; D018273:Carcinoma, Islet Cell / Q000737:chemistry / Q000235:genetics; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D018291:Cystadenoma, Mucinous / Q000737:chemistry / Q000235:genetics; D004815:Epidermal Growth Factor / Q000235:genetics*; D058851:GPI-Linked Proteins; D015870:Gene Expression; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins; D007515:Islets of Langerhans / Q000737:chemistry; D008562:Membrane Glycoproteins; D009363:Neoplasm Proteins / Q000235:genetics*; D010183:Pancreatic Ducts; D010190:Pancreatic Neoplasms / Q000737:chemistry / Q000235:genetics*; D010195:Pancreatitis / Q000378:metabolism
D014408:Biomarkers, Tumor; D058851:GPI-Linked Proteins; D036341:Intercellular Signaling Peptides and Proteins; D008562:Membrane Glycoproteins; D009363:Neoplasm Proteins; C070636:TDGF1 protein, human; D004815:Epidermal Growth Factor