TY - JOUR
T1 - Induction of platelet‐derived growth factor A and B chains and over‐expression of their receptors in human pancreatic cancer
AU - Ebert, Matthias
AU - Yokoyama, Munehiro
AU - Friess, Helmut
AU - Kobrin, Michael S.
AU - Büchler, Markus W.
AU - Korc, Murray
PY - 1995/9/4
Y1 - 1995/9/4
N2 - Expression of platelet‐derived growth factor (PDGF) and PDGF receptors was examined in cultured human pancreatic cancer cells, in the normal human pancreas and in pancreatic adenocarcinomas. mRNA transcripts encoding PDGF A and B chains, and PDGF receptor 0 (PDGFR3) were present in PANC‐I and HPAF human pancreatic cancer cells. Transforming growth factor β I (TGF‐βl), but not PDGF‐AA or ‐BB, enhanced PDGF A and B chain mRNA levels in both cell lines. In the normal human pancreas PDGF A chain mRNA levels were relatively abundant, whereas PDGF B chain mRNA levels were not detected and PDGF receptor a (PDGFRa) and p mRNA transcripts were present at low levels. PDGF immunoreactivity was present in islet cells, and PDGFRa was present in acinar cells, whereas PDGFRβ was present in acinar cells and in the connective tissue. In the pancreatic cancers, PDGF A chain mRNA transcripts were also abundant, and 6 of 13 samples exhibited the PDGF B chain mRNA transcript. In addition, there was a 7‐fold increase in the levels of PDGFRa and PDGFRp in the cancer samples by comparison with the normal pancreas. By immunohistochemistry, PDGF and both PDGF receptors were present in the cancer cells, and PDGFR3 was abundant in fibroblasts and endothelial cells within the connective tissue. © 1995 Wiley‐Liss, Inc.
AB - Expression of platelet‐derived growth factor (PDGF) and PDGF receptors was examined in cultured human pancreatic cancer cells, in the normal human pancreas and in pancreatic adenocarcinomas. mRNA transcripts encoding PDGF A and B chains, and PDGF receptor 0 (PDGFR3) were present in PANC‐I and HPAF human pancreatic cancer cells. Transforming growth factor β I (TGF‐βl), but not PDGF‐AA or ‐BB, enhanced PDGF A and B chain mRNA levels in both cell lines. In the normal human pancreas PDGF A chain mRNA levels were relatively abundant, whereas PDGF B chain mRNA levels were not detected and PDGF receptor a (PDGFRa) and p mRNA transcripts were present at low levels. PDGF immunoreactivity was present in islet cells, and PDGFRa was present in acinar cells, whereas PDGFRβ was present in acinar cells and in the connective tissue. In the pancreatic cancers, PDGF A chain mRNA transcripts were also abundant, and 6 of 13 samples exhibited the PDGF B chain mRNA transcript. In addition, there was a 7‐fold increase in the levels of PDGFRa and PDGFRp in the cancer samples by comparison with the normal pancreas. By immunohistochemistry, PDGF and both PDGF receptors were present in the cancer cells, and PDGFR3 was abundant in fibroblasts and endothelial cells within the connective tissue. © 1995 Wiley‐Liss, Inc.
UR - http://www.scopus.com/inward/record.url?scp=0029146793&partnerID=8YFLogxK
U2 - 10.1002/ijc.2910620507
DO - 10.1002/ijc.2910620507
M3 - Article
C2 - 7665222
AN - SCOPUS:0029146793
SN - 0020-7136
VL - 62
SP - 529
EP - 535
JO - International Journal of Cancer
JF - International Journal of Cancer
IS - 5
ER -