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Purpose To detect Wnt5a and Wnt11 expression in lung cancer,to explore the relationship between their expression and the types of lung cancer,and to assess the relationships between their expression and clinicopathologic factors (such as gender,age,degree of cell differentiation,lymph node metastasis).Methods The 120 cases of lung cancer were selected as the experimental group.In addition,20 cases of normal lung tissue were selected as the control group.Immunohistochemistry EnVision method was used to detect the expression of Wnt5a and Wnt11.The results were analyzed by the statistical software.Results The positive expression rate of Wnt5a and Wnt1 1 was 36％ and 38％ in 84 cases of non-small cell lung carcinoma.While the expression rate of Wnt5a and Wnt11 were low (8.3％ and 0,respectively)in 36 cases of small cell lung carcinoma.Both expression in non-small cell lung carcinoma was significantly higher than that of small cell carcinoma.The expression rate of Wnt11 in adenocarcinoma was higher (56％,while Wnt5a was 9％),and the expression rate of Wnt5a in squamous cell carcinoma was higher (50％,while Wnt11 was 25％).However,there was no significant difference between the two groups in the sex,age,differentiation and lymph node metastasis.Conclusion Both Wnt5a and Wnt11 expression was associated with lung cancer types.The positive expression rate of Wnt5a and Wnt11 in non-small cell lung carcinoma is significantly higher than that of small cell lung carcinoma.The expression level of Wnt5a is higher in squamous cell carcinoma,while Wnt11 is higher in adenocarcinoma.Both of their expression show no significant correlation with the lung cancer clinicopathological indicators (including the gender,age,degree of differentiation and lymph node metastasis in patients).
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Objective To probe into the optimal concentration of Wnt-11 to induce the differentiation of bone marrow mesenchymal stem cells (BMMSCs)into cardiomyocyte-like cells in vitro.Methods BMMSCs were isolated from the bone marrow of SD rats using whole bone marrow culture method.After cultured for 48 h, BMMSCs of the second generation were utilized for directed induction.Based on the final concentration of Wnt-11 , BMMSCs were divided up into Group A (100 ng/mL),Group B (200 ng/mL),Group C (400 ng/mL)and Group D (blank control).After 72-hour induction,the cells were cultured in complete medium for 4 weeks while cells in Group D were cultured only in the complete medium.The morphological changes were observed under the phase contrast microscope.Surface antigen expression of BMMSCs was identified by flow cytometry.When cells were cultured for 4 weeks,the expressions of Desmin,Connexin43 and cTnI were detected by immunocytochemistry. Meanwhile, the ultrastructural changes were observed using transmission electron microscope. The mRNA expressions of cardiac transcription factors GATA-4,Nkx2.5 andα-MHC in BMMSCs were detected by RT-qPCR at 1,2 and 4 weeks after induction.Results Primary BMMSCs formed cell colonies at 2 weeks;the cells were mainly fusiform or star-shape,and a few irregularly-shaped ones were also visible.The passaged cells were larger than those of primary culture.After induction,the cells exhibited long shuttle-shape and were aligned in parallel. Flow cytometery displayed that the positive rate of the surface antigens of BMMSCs CD29,CD45,and CD90 was 97.9%,0.4% and 99.5%,respectively.When BMMSCs-induced via Wnt-11 were cultured for 4 weeks,Desmin, cTnI and Connexin43 were all positively expressed in induction groups.Whereas in the blank control group they were slightly positive or negative;the positive rate in Group B was the highest (P<0 .05 ).Transmission electron microscopy exhibited that organelles such as rough endoplasmic reticulum,mitochondria,as well as some ribosomes were visible in the cytoplasm of these cells in each induction group.In addition,myofilaments were arranged in parallel in the cytoplasm.The cells in induction groups could express GATA-4 and Nkx2 .5 in the first week,and then the expression of them decreased in the second week,but then increased in the fourth week;gene expression in induction Group B was significantly higher than in the other two induction groups (P<0 .05 ).The expression of GATA-4 and Nkx2 .5 in Group D was 1 ,α-MHC was not expressed in the four groups during the culture period. Conclusion Wnt-11 can induce the differentiation of BMMSCs into cardiomyocyte-like cells in vitro,and the optimal concentration of Wnt-11 is 200 ng/mL.
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Objective Early clinical symptoms of esophageal cancer are often not obvious , so a deeper insight into tumor markers is very important for the early diagnosis of esophageal cancer .This study was to investigate the expressions of Rock 2 and Wnt11 in the specific esophageal cancer cell lines Eca-109 and HEEC and the relationship of the signal transduction pathway of proteins with the development of esophageal cancer . Methods Esophageal cancer cell lines Eca-109 and HEEC were cultured and the expression levels of Rock2 and Wnt11 in the cell lines were determined by real-time quantitative PCR and Western blot . Results The mRNA expressions of Rock2 and Wnt11 were significantly increased in the Eca-109 as compared with those in the HEEC cell line (4.955± 0.539 vs 1.000±0.000, P<0.01;2.925±0.230 vs 1.000±0.000, P<0.01), and so were the protein expressions of Rock 2 and Wnt11 (955.000±21.628 vs 778.844±102.193, P<0.05;2175.316±145.623 vs 1312.233±50.734, P<0.05). Conclusion The up-regula-ted expressions of Rock 2 and Wint11 may be the markers of the metastasis of esophageal squamous cancer .
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Objective To estimate the influence of ADAR1 gene,which is considered to be responsible for the pathogenesis of dyschromatosis symmetrica hereditaria,on Wnt1 1 expression and tyrosinase activity.Methods Some cultured HaCaT cells were equally divided into four groups:control group remaining untreated,three experimental groups transfected with three different ADAR1-specific shRNAs respectively.Then,Western blot was performed to quantify the expression of Wnt11 protein in HaCaT cells so as to select the most potent shRNA.Some human A375 melanoma cells were cocultured with untransfected HaCaT cells (normally expressing ADAR1 and Wnt1 1 proteins) or HaCaT cells transfected with the selected specific shRNA (lowly expressing ADAR1 and Wnt11 proteins).Thereafter,cell appearance was observed using inverted microscopy at 24,48 and 72 hours,and tyrosinase activity was estimated at 48 hours.Results As Western blot showed,the expression of Wnt 11 protein was significantly lower in the three ADAR1-silenced experimental groups than in the control group.The number of dendritic protrusions at the junction sites between HaCaT cells and A375 cells was significantly decreased,together with a significant reduction in tyrosinase activity (absorbance value:0.0168 ± 0.0069 vs.0.0490 ± 0.0132,P ＜0.01),in A375 cells cocultured with transfected HaCaT cells compared with those cocultured with normal control HaCaT cells.Conclusion ADAR1 gene silencing in HaCaT cells can attenuate the expression of Wnt11 protein,and affect tyrosinase activity in A375 cells.
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Wnt signaling pathways is a hot focus in recent years,which plays important regulatory roles in cell proliferation,differentiation and migration.Wnt signaling pathways include classical Wnt signaling pathways and non classical Wnt signaling pathways.Wnt11 is a very important signal molecule in the nonclassical WNT signaling pathways and kidney development,which plays a positive regulatory effect in the development of kidney and become silent in mature kidney.Studies have shown that Wnt11 re-express in the renal fibrosis.This paper discusses the function of the Wnt11 in kidney development and the relationship between Wnt11 and renal fibrosis.