摘要
本研究观察了上皮生长因子(EGF)抗EGF抗体和抗EGF受体抗体对3个目建的人胰腺癌细胞系(PC-1,PC-2,PC-3)和3个其它人癌细胞系(肺腺癌LETP,乳腺癌BCP37和胃腺癌SGL7901)生长的影响。结果表明:EGF仅对PC-1和LETP2个细胞系有轻度刺激生长的作用,对其它4个细胞系无明显作用。在有EGF存在的条件下,抗EGF抗体和抗EGF受体抗体对PC-1,LETP和SGL7901 3个细胞系有生长抑制作用。 用Northern核酸杂交技术研究表明这6个人癌细胞系中均有EGF受体mRNA的表达。结果表明:虽然这些细胞系中均有EGF受体的基因表达,但不一定对外源性EGF处理有反应。
In this study, 3 human pancreatic adenocarcinoma cell lines (PC-1, PC-2 and PC-3) and 3 other human cancer cell lines (adenocarcinoma of lung, LE-TP; gastric carcinoma, SGL7901; and breast carcinoma, BCP37) were investigated by adding EGF, anti-EGF antiserum and anti-EGFR monoclonal antibody into culture medium. EGF was found to exert a mild stimulating effect on the growth of PC-1 and LETP cells, but had no effect on the other 4 cell lines. Anti-EGF and anti-EGFR antibodies inhibited the proliferation of PC-1, LETP and SGL7901 cells. No significant effect on the other 3 cell lines was seen.By using the Northern blot technique, expression of EGFR mRNA was identified in all 6 cell lines. There were 3 bands (10.5kb, 5.8kb and 2.8kb) of EGFR mRNA in all cell lines except for LETP, in which the 10.5kb band was absent. The results indicate that the effect of EGF on the growth of cancer cells is very complicated and may involve an unknown regulatory mechanism of cancer cell growth. EGF may exert stimulating or inhibiting effects on cancer cell proliferation, or it may have no effect at all, even though the EGFR gene was expressed in these cell lines.
出处
《中国医学科学院学报》
CAS
CSCD
北大核心
1992年第4期289-294,共6页
Acta Academiae Medicinae Sinicae
关键词
上皮生长因子
抗体
人癌细胞系
EGF anti-EGF antibody anti-EGFR antibody pancreatic carcinoma cell lines human cancer cell lines EGFR mRNA expression
