表皮生长因子受体及其与胃癌的关系研究

胃癌是人类常见的恶性肿瘤之一,占我国恶性肿瘤的第一或第二位,占癌症死亡原因第二位,严重危害人类的生命健康.目前胃癌的治疗以手术为主,结合术前或术后的辅助治疗.早期胃癌术后生存率达85%～90%以上,但进展期胃癌总体预后较差,5年生存率＜10%,中位生存期仅6～9个月.目前胃癌发现时多处于进展期,因此胃癌的治疗棘手,依然是世界关注的焦点.表皮生长因子受体(EGFR)分布广泛,主要位于哺乳动物多种细胞表面,EGFR的高表达不仅有促进肿瘤细胞的增殖、肿瘤内及周围血管生成、肿瘤细胞黏附、侵袭和转移作用,还具有抑制肿瘤细胞凋亡的作用,有多篇文献报道EGFR在正常胃黏膜中表达阴性或低表达,而在胃癌组织中高表达,EGFR与胃癌的发生发展密切相关.EGFR作为肿瘤治疗靶点的前景已被普遍看好,对其研究也较为成熟,许多药物如吉非替尼、埃罗替尼等已用于临床,在胃癌治疗方面取得了一些进展.

Epidermal Growth Factor Receptor and Its Relationship with Gastric Carcinoma

Gastric cancer is one of the most common malignancies in the digestive system.It remains the second leading cause of cancer death worldwide,is harm to the health of human being seriously.Epidermal growth factor receptor is closely related to proliferation,adhesion,invasion,metastasis,apoptosis in tumor cells and angiogenesis.Epidermal growth factor receptor over expression has been described in many human tumours including gastric cancer.The role of epidermal growth factor receptor in gastric cancer is very important.Much attention has been drawn to the oncogenic effect of epidermal growth factor receptor and most of all to success of epidermal growth factor receptor target therapies.Such as Gefitnib,Erlotinib have been used in clinical treatment.