ABSTRACT
Objective Todetect the expressions of HGF ,C-met and NRP1 protein in osteosarcoma and to investigate their corre-lation and the clinical significance .Methods The postoperative preserved paraffin block and the clinical data in 70 cases of osteosar-coma were taken as the observation group and 50 cases of the parraffin block of mature bone tissue after decalcification and the clin-ical data were taken as the control group .The expressions of HGF ,C-met and NRP1 protein were detected by the immunohisto-chemistry(IHC) method for investigating their expressions in the tumor patients with different clinicopathological characteristics and analyzing their relationship .Results The positive rates of HGF ,C-met and NRP1 expressions in the observation group were higher than those in the control group .The positive rates of HGF ,C-met and NRP1 expressions in the observation group were cor-related with metastasis ,vascular invasion ,clinical stage and Ki67 expression .The positive relationship was found between the ex-pressions of HGF and C-met with NRP1 of neoplasm .Conclusion The high expressions of HGF ,C-met and NRP1 in osteosarcoma play the important role in the progress of tumor lesion .The postoperative combined detection of HGF ,C-met and NRP1 protein could have certain value to predict the prognosis .
ABSTRACT
Objective To investigate the functional role of mur in e hepatocyte growth factor (HGF) in inducing in vitro the mouse embryonic st em cells (ESC) to differentiate unidirectionally into hepatocyte. Method s Both spontaneous and HGF induced differentiations of the primordial c ell elusters formed by suspended culture in vitro of ESC were daily observed with microscope for 5-7 days. After 4 weeks of culture, the cells were stained with HE and glycogen staining, their morphology were observed, The synthesis of urea nitrogen and triglycerides in the culture medium, the expression of myocard ial MHC, albumin, AFP and CK18, and the indocyanine green (ICG) staining were a lso detected. Results It was hard to control the spontaneous di fferentiation of ESC. HGF could promote the differentiation of ESC into endoderm , and more likely into myocardium. HGF could also induce the expression o f albumin, AFP and CK18, and positive staining of ICG and FDA. Conclusio ns HGF may induce the differentiation of ESC into hepatocyte, but the f unctional role is limited. It implies that a comprehensive effort of multiple fa ctors might be needed in inducing the hepatocyte differentiation.