To study the effects of phenylacetate （PA） on cell proliferation and homeobox （HOX） genes expression in the colorectal carcinoma HCT-8 cell line, HCT-8 cells were grown in the presence or absence of PA. The cellul...To study the effects of phenylacetate （PA） on cell proliferation and homeobox （HOX） genes expression in the colorectal carcinoma HCT-8 cell line, HCT-8 cells were grown in the presence or absence of PA. The cellular proliferation inhibition was evaluated by the MTT assay. Twenty-two HOX genes were divided into three groups （ P1, P2, P3） according to their primer sequences, and the samples of cells were analyzed for the HOX genes＇ mRNA expression by means of the semi-quantitative reverse transcription-polymerase chain reaction （RT-PCR）. The level of the HOX genes＇ expression was expressed as the ratio expression rate of HOX gene to the β-actin. HCT-8 cells were treated with 1.0-5.0 mmol/L PA for 24-72 h. With the increase of the PA concentration or the prolongation of the treating time, the cell proliferation is inhibited in a dose- and time-dependent manner. The P1 group mRNA＊ expression（0. 5781 ±0. 0836） is significantly lower than that of the untreated group （0. 7701 ± 0. 0883 ） in HCT-8 cells （p 〈 0. 001 ）. Both the mRNA expressions of groups P2 （0. 3941 ± 0. 0819） and P3 （0. 5601 ± 0. 0736） in the PA treated group are significantly higher than those of the untreated groups P2（0. 1221±0. 0782） and P3 （0. 1806 ± 0. 0811 ） in HCT-8 cells（p 〈 0. 001）. PA could effectively inhibit cell proliferation by regulating the HOX genes expression and the mechanisms of the PA action are correlated with the transcription process in HCT-8 cells.展开更多
Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal(GI) cancers, most studies have focused on the function of non-HOX genes including c...Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal(GI) cancers, most studies have focused on the function of non-HOX genes including caudal-related homeobox transcription factor 1(CDX1) and CDX2. CDX2 is a crucial factor in the development of pre-cancerous lesions such as Barrett's esophagus or intestinal metaplasia in the stomach, and its tumor suppressive role has been investigated in colorectal cancers. Recently, several HOX genes were reported to have specific roles in GI cancers; for example, HOXA13 in esophageal squamous cell cancer and HOXB7 in stomach and colorectal cancers. HOXD10 is upregulated in colorectal cancer while it is silenced epigenetically in gastric cancer. Thus, it is essential to examine the differential expression pattern of various homeobox genes in specific tumor types or cell lineages, and understand their underlying mechanisms. In this review, we summarize the available research on homeobox genes and present their potential value for the prediction of prognosis in GI cancers.展开更多
The proper development of uterus to a state of receptivity and the attainment of implantation competency for blastocyst are 2 indispensable aspects for implantation,which is considered to be a critical event for succe...The proper development of uterus to a state of receptivity and the attainment of implantation competency for blastocyst are 2 indispensable aspects for implantation,which is considered to be a critical event for successful pregnancy. Like many developmental processes, a large number of transcription factors, such as homeobox genes, have been shown to orchestrate this complicated but highly organized physiological process during implantation. In this review, we focus on progress in studies of the role of homeobox genes, especially the Hox and Msx gene families, during implantation, together with subsequent development of post-implantation uterus and related reproductive defects in both mouse models and humans, that have led to better understanding of how implantation is precisely regulated and provide new insights into infertility.展开更多
Study Design: Between January 2003 and June 2009, we collected fresh tumor and extracted high-quality RNA from the omental/peritoneal metastases of 47 patients with stage IIB-IV ovarian cancer. Clinical data were abst...Study Design: Between January 2003 and June 2009, we collected fresh tumor and extracted high-quality RNA from the omental/peritoneal metastases of 47 patients with stage IIB-IV ovarian cancer. Clinical data were abstracted from the patients’ medical records. Expression of Six1 level by quantitative RT-PCR was compared with preoperative factors and intraoperative findings using the χ2 test and the Fisher exact test. The effect of Six1 elevation on survival was assessed with the Kaplan/Meier method. Results: The mean age of patients enrolled was 60 (range 33 - 84). The histological subtypes were 77% serous (36/47), 11% endometrioid (5/47), 4% mucinous (2/47), and 4% clear cell (2/47). Eighty-one percent were optimally cytoreduced. Median Six1 expression for the samples was 114 fg/ng 18S rRNA and Six1 overexpression, defined as >300 fg/ng 18S rRNA, was observed in 19% of tumors. Six1 expression above sample median was associated with peritoneal disease (p = 0.049) and inability to optimally cytoreduce (p = 0.02). Six1 overexpression was associated with worsened survival in the high grade serous subgroup (43 months versus 71 months, p = 0.039 Log Rank test). Conclusions: Elevated levels of Six1 predict peritoneal disease and larger residual tumor after maximal cytoreductive effort. Prospective prediction of surgical cytoreduction using a combination of Six1 expression, included with other factors, is currently being evaluated.展开更多
BACKGROUND The distal-less homeobox(DLX)gene family plays an important role in the development of several tumors.However,the expression pattern,prognostic and diagnostic value,possible regulatory mechanisms,and the re...BACKGROUND The distal-less homeobox(DLX)gene family plays an important role in the development of several tumors.However,the expression pattern,prognostic and diagnostic value,possible regulatory mechanisms,and the relationship between DLX family genes and immune infiltration in colon cancer have not been systematically reported.AIM We aimed to comprehensively analyze the biological role of the DLX gene family in the pathogenesis of colon cancer.METHODS Colon cancer tissue and normal colon tissue samples were collected from the Cancer Genome Atlas and Gene Expression Omnibus databases.Wilcoxon rank sum test and t-test were used to assess DLX gene family expression between colon cancer tissue and unpaired normal colon tissue.cBioPortal was used to analyze DLX gene family variants.R software was used to analyze DLX gene expression in colon cancer and the relationship between DLX gene family expression and clinical features and correlation heat map.The survival package and Cox regression module were used to assess the prognostic value of the DLX gene family.The pROC package was used to analyze the diagnostic value of the DLX gene family.R software was used to analyze the possible regulatory mechanisms of DLX gene family members and related genes.The GSVA package was used to analyze the relationship between the DLX gene family and immune infiltration.The ggplot2,the survminer package,and the clusterProfiler package were used for visualization.RESULTS DLX1/2/3/4/5 were significantly aberrantly expressed in colon cancer patients.The expression of DLX genes were associated with M stage,pathologic stage,primary therapy outcome,residual tumor,lymphatic invasion,T stage,N stage,age,perineural invasion,and history of colon polyps.DLX5 was independently correlated with the prognosis of colon cancer in multivariate analysis.DLX1/2/3/4/5/6 were involved in the development and progression of colon cancer by participating in immune infiltration and associated pathways,including the Hippo signaling pathway,the Wnt signaling pathway,several signaling pathways regulating the pluripotency of stem cells,and Staphylococcus aureus infection.CONCLUSION The results of this study suggest a possible role for the DLX gene family as potential diagnostic or prognostic biomarkers and therapeutic targets in colon cancer.展开更多
IN 1984, Gehring and Scoff discovered homeobox genes respectively and confirmed that the homeobox genes were the control genes of the constructure genes in biological development, which was a breakthrough in molecular...IN 1984, Gehring and Scoff discovered homeobox genes respectively and confirmed that the homeobox genes were the control genes of the constructure genes in biological development, which was a breakthrough in molecular development biology. It is important for embryo development and evolution to further study the homeobox genes, including gene mapping. Recently, the reseach on the homeobox gene mapping has drawn much attention, but mostly展开更多
文摘To study the effects of phenylacetate （PA） on cell proliferation and homeobox （HOX） genes expression in the colorectal carcinoma HCT-8 cell line, HCT-8 cells were grown in the presence or absence of PA. The cellular proliferation inhibition was evaluated by the MTT assay. Twenty-two HOX genes were divided into three groups （ P1, P2, P3） according to their primer sequences, and the samples of cells were analyzed for the HOX genes＇ mRNA expression by means of the semi-quantitative reverse transcription-polymerase chain reaction （RT-PCR）. The level of the HOX genes＇ expression was expressed as the ratio expression rate of HOX gene to the β-actin. HCT-8 cells were treated with 1.0-5.0 mmol/L PA for 24-72 h. With the increase of the PA concentration or the prolongation of the treating time, the cell proliferation is inhibited in a dose- and time-dependent manner. The P1 group mRNA＊ expression（0. 5781 ±0. 0836） is significantly lower than that of the untreated group （0. 7701 ± 0. 0883 ） in HCT-8 cells （p 〈 0. 001 ）. Both the mRNA expressions of groups P2 （0. 3941 ± 0. 0819） and P3 （0. 5601 ± 0. 0736） in the PA treated group are significantly higher than those of the untreated groups P2（0. 1221±0. 0782） and P3 （0. 1806 ± 0. 0811 ） in HCT-8 cells（p 〈 0. 001）. PA could effectively inhibit cell proliferation by regulating the HOX genes expression and the mechanisms of the PA action are correlated with the transcription process in HCT-8 cells.
基金Supported by the Korean College of Helicobacter and Upper Gastrointestinal Research Foundation Granta Korea University Grant,No.K1512661
文摘Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal(GI) cancers, most studies have focused on the function of non-HOX genes including caudal-related homeobox transcription factor 1(CDX1) and CDX2. CDX2 is a crucial factor in the development of pre-cancerous lesions such as Barrett's esophagus or intestinal metaplasia in the stomach, and its tumor suppressive role has been investigated in colorectal cancers. Recently, several HOX genes were reported to have specific roles in GI cancers; for example, HOXA13 in esophageal squamous cell cancer and HOXB7 in stomach and colorectal cancers. HOXD10 is upregulated in colorectal cancer while it is silenced epigenetically in gastric cancer. Thus, it is essential to examine the differential expression pattern of various homeobox genes in specific tumor types or cell lineages, and understand their underlying mechanisms. In this review, we summarize the available research on homeobox genes and present their potential value for the prediction of prognosis in GI cancers.
基金National Natural Science Foundation of China,Grant/Award Number:81330017,81490744National Key R&D Program of China,Grant/Award Number:2017YFC1001402
文摘The proper development of uterus to a state of receptivity and the attainment of implantation competency for blastocyst are 2 indispensable aspects for implantation,which is considered to be a critical event for successful pregnancy. Like many developmental processes, a large number of transcription factors, such as homeobox genes, have been shown to orchestrate this complicated but highly organized physiological process during implantation. In this review, we focus on progress in studies of the role of homeobox genes, especially the Hox and Msx gene families, during implantation, together with subsequent development of post-implantation uterus and related reproductive defects in both mouse models and humans, that have led to better understanding of how implantation is precisely regulated and provide new insights into infertility.
文摘Study Design: Between January 2003 and June 2009, we collected fresh tumor and extracted high-quality RNA from the omental/peritoneal metastases of 47 patients with stage IIB-IV ovarian cancer. Clinical data were abstracted from the patients’ medical records. Expression of Six1 level by quantitative RT-PCR was compared with preoperative factors and intraoperative findings using the χ2 test and the Fisher exact test. The effect of Six1 elevation on survival was assessed with the Kaplan/Meier method. Results: The mean age of patients enrolled was 60 (range 33 - 84). The histological subtypes were 77% serous (36/47), 11% endometrioid (5/47), 4% mucinous (2/47), and 4% clear cell (2/47). Eighty-one percent were optimally cytoreduced. Median Six1 expression for the samples was 114 fg/ng 18S rRNA and Six1 overexpression, defined as >300 fg/ng 18S rRNA, was observed in 19% of tumors. Six1 expression above sample median was associated with peritoneal disease (p = 0.049) and inability to optimally cytoreduce (p = 0.02). Six1 overexpression was associated with worsened survival in the high grade serous subgroup (43 months versus 71 months, p = 0.039 Log Rank test). Conclusions: Elevated levels of Six1 predict peritoneal disease and larger residual tumor after maximal cytoreductive effort. Prospective prediction of surgical cytoreduction using a combination of Six1 expression, included with other factors, is currently being evaluated.
文摘BACKGROUND The distal-less homeobox(DLX)gene family plays an important role in the development of several tumors.However,the expression pattern,prognostic and diagnostic value,possible regulatory mechanisms,and the relationship between DLX family genes and immune infiltration in colon cancer have not been systematically reported.AIM We aimed to comprehensively analyze the biological role of the DLX gene family in the pathogenesis of colon cancer.METHODS Colon cancer tissue and normal colon tissue samples were collected from the Cancer Genome Atlas and Gene Expression Omnibus databases.Wilcoxon rank sum test and t-test were used to assess DLX gene family expression between colon cancer tissue and unpaired normal colon tissue.cBioPortal was used to analyze DLX gene family variants.R software was used to analyze DLX gene expression in colon cancer and the relationship between DLX gene family expression and clinical features and correlation heat map.The survival package and Cox regression module were used to assess the prognostic value of the DLX gene family.The pROC package was used to analyze the diagnostic value of the DLX gene family.R software was used to analyze the possible regulatory mechanisms of DLX gene family members and related genes.The GSVA package was used to analyze the relationship between the DLX gene family and immune infiltration.The ggplot2,the survminer package,and the clusterProfiler package were used for visualization.RESULTS DLX1/2/3/4/5 were significantly aberrantly expressed in colon cancer patients.The expression of DLX genes were associated with M stage,pathologic stage,primary therapy outcome,residual tumor,lymphatic invasion,T stage,N stage,age,perineural invasion,and history of colon polyps.DLX5 was independently correlated with the prognosis of colon cancer in multivariate analysis.DLX1/2/3/4/5/6 were involved in the development and progression of colon cancer by participating in immune infiltration and associated pathways,including the Hippo signaling pathway,the Wnt signaling pathway,several signaling pathways regulating the pluripotency of stem cells,and Staphylococcus aureus infection.CONCLUSION The results of this study suggest a possible role for the DLX gene family as potential diagnostic or prognostic biomarkers and therapeutic targets in colon cancer.
文摘IN 1984, Gehring and Scoff discovered homeobox genes respectively and confirmed that the homeobox genes were the control genes of the constructure genes in biological development, which was a breakthrough in molecular development biology. It is important for embryo development and evolution to further study the homeobox genes, including gene mapping. Recently, the reseach on the homeobox gene mapping has drawn much attention, but mostly
