ABSTRACT
Objective To investigate the relationship between CD40,Ki-67,and CD34 expressions and clinical significance of gastric cancer.Methods The expressions of CD40,Ki-67,and CD34 were detected by immunohistochemistry in 80 cases of gastric carcinomas and adjacent mucosas.Results The high expression of CD40 was detected in 36.3％ (29/80) cases of gastric cancer tissues,and Ki-67 was 53.8％ (43/80).The high expression of CD40 was related to lymph node metastasis,depth of invasion,and the patient's prognosis.The high expression of Ki-67 was related to histological differentiation,depth of invasion,vascular invasion,and lymph node metastasis (P ＜ 0.05).Expression of CD40 was positively related to Ki-67 and CD34 in gastric carcinomas (P ＜ 0.05).Conclusions The high expressions of CD40,Ki-67,and CD34 in gastric cancers are related to the tumor proliferation,tumor angiogenesis,and the prognosis of patients.
ABSTRACT
Objective To validate the possibility of CD133 CD34 CD44 be served as biomarkers in cancer stem cell of human lung adenocarcinoma. Methods Two kinds of culturing methods were performed to generate adhesive tumor cells and floating aggregates, and the differences of expression of CD133 CD34 CD44 between 2 kinds of cultured cells were observed by immunofluorescence. Results Floating aggregates grew more slowly, kept activity for longer period than adhesive cells (72.5% vs 47.5%,P＜0.05). Floating aggregates expressed higher level of CD133, CD34 and CD44 than adhesive cells (68.97%,82.76%,93.10% vs 5.26%,15.79%,5.26%,P＜0.01). Conclusions The combination of CD133, CD34 and CD44 probably can be used as surface markers of cancer stem cells for human lung adenocarcinoma.