Objective:To discuss the expression of mitogen-activated protein kinase 1(MAPK1) in the cervical cancer and effect of MAPK1 gene silencing on epithelial-mesenchymal transition and invasion and metastasis.Methods:Immun...Objective:To discuss the expression of mitogen-activated protein kinase 1(MAPK1) in the cervical cancer and effect of MAPK1 gene silencing on epithelial-mesenchymal transition and invasion and metastasis.Methods:Immunohistoehemistry,western blot and RT-PCR method were employed to detect the expression of MAPKl protein and mRNA in cervical cancer tissue and adjacent normal tissue.The constructed siRNA-MAPKI was transferred into human cervical cancer HeLa cells using Lipofectamine^(?)2000.MTT method was used to detect the cell vitality,transwell method to detect the cell invasion,and western blot to detect the expression of matrix metalloproteinases(MMP)-2,MMP-9,tissue inhibitor of metalloproteinase(TIMP)-1,TIMP-2,zinc finger transcription factor(Snail),epithelialmesenchymal transition related protein(EMT) E-cadherin and vimentin in cells.Results:The expression of MAPKl protein and mRNA in the cervical cancer tissue was significantly higher than the one in the adjacent normal tissue(P<0.01):after transfecting the siRNA-MAPKI into the human cervical cancer HeLa cells through liposome,compared with the control group,its cell vitality was significantly decreased(P<0.01),cell invasion was significantly decreased(P<0.01);expressed of MMP2.MMP-9,Snail and vimentin was significantly decreased(P<0.01),and expression of TIMP-1,TIMP-2 and E-cadherin was significantly increased(/J<0.01).Conclusions:Because of the high expression of MAPKl in the cervical cancer tissue,the interference in the expression of MAPK1 can significantly inhibit the invasion and metastasis of cervical cancer HeLa cells,which is related to the interference in the expression of MMPs/TIMP and Snail-mediated generation of EMT.展开更多
Gastrointestinal stromal tumours(GISTs) are the most common mesenchymal tumours of the gastrointestinal tract,but they represent less than 3% of all gastrointestinal tract malignancies.This is a detailed case study of...Gastrointestinal stromal tumours(GISTs) are the most common mesenchymal tumours of the gastrointestinal tract,but they represent less than 3% of all gastrointestinal tract malignancies.This is a detailed case study of a 52-yearold male patient treated for very uncommon histological subtype of gastric GIST with atypical clinical presentation,asymptomatic progress and late diagnosis.The resected tumour,giant in diameters,was confirmed to represent the most rare histopathologic subtype of GISTs- sarcomatoid epithelioid GIST.We report this case and review the literature with a special focus on pathomorphological evaluation,biological aggressiveness and prognostic factors.To our knowledge this is the first report of giant GIST of very uncommon sarcomatoid epithelioid subtype.It is concluded that clinicians should pay attention to the fact that initial diagnosis may be delayed due to mildly asymptomatic and non-specific clinical presentation.Asymptomatic tumours diagnosed at a late stage,which is often the case,can be large on presentation.Prognosis for patients diagnosed with GIST depend on tumour size,mitotic rate,histopathologic subtype and tumour location.That is why early diagnosis and R0 resection,which is usually feasible and safe even in giant gastric sarcomatoid epithelioid subtype of GISTs,are the key factors for further treatment and good prognosis.展开更多
Hepatocellular carcinoma(HCC)is a highly heterogenous dis-ease in histology,genetic aberrations,and protein expression.Over the past decade,the development of new omics techniques has fa-cilitated significant advances...Hepatocellular carcinoma(HCC)is a highly heterogenous dis-ease in histology,genetic aberrations,and protein expression.Over the past decade,the development of new omics techniques has fa-cilitated significant advances in the field of molecular typing stud-ies of HCC.In the era of precision medicine,it is of great signif-icance to improve the efficacy of HCC treatment based on tumor molecular subtyping.Cytokeratin(CK)19-positive HCC has gained increasing atten-tion.Although CK19 is a marker of biliary epithelial cells,10%−30%of HCCs are observed to be CK19 positive[1].Differing from com-bined hepatocellular and cholangiocarcinoma,CK19-positive HCC displays typical HCC morphological features,exhibiting strong co-express of both hepatocyte and cholangiocyte markers within the same tumor cells.Consequently,CK19-positive HCC is also referred to as dual-phenotype HCC,with displaying cholangiolar differenti-ation.展开更多
AIM: To investigate cell type specific distribution of β-actin expression in gastric adenocarcinoma and its correlation with clinicopathological parameters.
基金supported by National Natural Science Foundation of China(No.81272335)
文摘Objective:To discuss the expression of mitogen-activated protein kinase 1(MAPK1) in the cervical cancer and effect of MAPK1 gene silencing on epithelial-mesenchymal transition and invasion and metastasis.Methods:Immunohistoehemistry,western blot and RT-PCR method were employed to detect the expression of MAPKl protein and mRNA in cervical cancer tissue and adjacent normal tissue.The constructed siRNA-MAPKI was transferred into human cervical cancer HeLa cells using Lipofectamine^(?)2000.MTT method was used to detect the cell vitality,transwell method to detect the cell invasion,and western blot to detect the expression of matrix metalloproteinases(MMP)-2,MMP-9,tissue inhibitor of metalloproteinase(TIMP)-1,TIMP-2,zinc finger transcription factor(Snail),epithelialmesenchymal transition related protein(EMT) E-cadherin and vimentin in cells.Results:The expression of MAPKl protein and mRNA in the cervical cancer tissue was significantly higher than the one in the adjacent normal tissue(P<0.01):after transfecting the siRNA-MAPKI into the human cervical cancer HeLa cells through liposome,compared with the control group,its cell vitality was significantly decreased(P<0.01),cell invasion was significantly decreased(P<0.01);expressed of MMP2.MMP-9,Snail and vimentin was significantly decreased(P<0.01),and expression of TIMP-1,TIMP-2 and E-cadherin was significantly increased(/J<0.01).Conclusions:Because of the high expression of MAPKl in the cervical cancer tissue,the interference in the expression of MAPK1 can significantly inhibit the invasion and metastasis of cervical cancer HeLa cells,which is related to the interference in the expression of MMPs/TIMP and Snail-mediated generation of EMT.
文摘Gastrointestinal stromal tumours(GISTs) are the most common mesenchymal tumours of the gastrointestinal tract,but they represent less than 3% of all gastrointestinal tract malignancies.This is a detailed case study of a 52-yearold male patient treated for very uncommon histological subtype of gastric GIST with atypical clinical presentation,asymptomatic progress and late diagnosis.The resected tumour,giant in diameters,was confirmed to represent the most rare histopathologic subtype of GISTs- sarcomatoid epithelioid GIST.We report this case and review the literature with a special focus on pathomorphological evaluation,biological aggressiveness and prognostic factors.To our knowledge this is the first report of giant GIST of very uncommon sarcomatoid epithelioid subtype.It is concluded that clinicians should pay attention to the fact that initial diagnosis may be delayed due to mildly asymptomatic and non-specific clinical presentation.Asymptomatic tumours diagnosed at a late stage,which is often the case,can be large on presentation.Prognosis for patients diagnosed with GIST depend on tumour size,mitotic rate,histopathologic subtype and tumour location.That is why early diagnosis and R0 resection,which is usually feasible and safe even in giant gastric sarcomatoid epithelioid subtype of GISTs,are the key factors for further treatment and good prognosis.
基金supported by grants from the Major Re-search Plan of the National Natural Science Foundation of China(92159202)the National Key Research and Development Pro-gram of China(2021YFA1100500)+5 种基金the Key Research&Develop-ment Plan of Zhejiang Province(2024C03051)the Innovation Team of Hangzhou Medical College(CXLJ202401)Joint TCM Science&Technology Projects of National Demonstration Zones for Compre-hensive TCM Reform(GZY-KJS-ZJ-2025-002)the National Natural Science Foundation of China(82303387)the Natural Science Foun-dation of Zhejiang Province(LQ23H160048)the Construction Fund of Key Medical Disciplines of Hangzhou(2025HZGF05).
文摘Hepatocellular carcinoma(HCC)is a highly heterogenous dis-ease in histology,genetic aberrations,and protein expression.Over the past decade,the development of new omics techniques has fa-cilitated significant advances in the field of molecular typing stud-ies of HCC.In the era of precision medicine,it is of great signif-icance to improve the efficacy of HCC treatment based on tumor molecular subtyping.Cytokeratin(CK)19-positive HCC has gained increasing atten-tion.Although CK19 is a marker of biliary epithelial cells,10%−30%of HCCs are observed to be CK19 positive[1].Differing from com-bined hepatocellular and cholangiocarcinoma,CK19-positive HCC displays typical HCC morphological features,exhibiting strong co-express of both hepatocyte and cholangiocyte markers within the same tumor cells.Consequently,CK19-positive HCC is also referred to as dual-phenotype HCC,with displaying cholangiolar differenti-ation.
基金Supported by TMH-IRG for project funding(account number-466),Advanced Center for Treatment Research and Education in Cancer,India for funding to Gupta lab
文摘AIM: To investigate cell type specific distribution of β-actin expression in gastric adenocarcinoma and its correlation with clinicopathological parameters.
