Hepatitis B virus X protein promotes hepatoma cell invasion and metastasis by stabilizing Snail protein

A high incidence of tumor recurrence and metastasis has been reported in hepatocellular carcinoma (HCC) patients with chronic hepatitis B virus (HBV) infection. Although the pathological relevance and significance of hepatitis B virus X protein (HBx) in HBV‐associated hepatocarcinogenesis attracted...

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Veröffentlicht in:Cancer science 2012-12, Vol.103 (12), p.2072-2081
Hauptverfasser: Liu, Haiou, Xu, Le, He, Hongyong, Zhu, Yu, Liu, Jing, Wang, Shanshan, Chen, Lin, Wu, Qian, Xu, Jiejie, Gu, Jianxin
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container_end_page 2081
container_issue 12
container_start_page 2072
container_title Cancer science
container_volume 103
creator Liu, Haiou
Xu, Le
He, Hongyong
Zhu, Yu
Liu, Jing
Wang, Shanshan
Chen, Lin
Wu, Qian
Xu, Jiejie
Gu, Jianxin
description A high incidence of tumor recurrence and metastasis has been reported in hepatocellular carcinoma (HCC) patients with chronic hepatitis B virus (HBV) infection. Although the pathological relevance and significance of hepatitis B virus X protein (HBx) in HBV‐associated hepatocarcinogenesis attracted much attention in recent years, the role and molecular mechanism for HBx in hepatoma invasion and metastasis remains poorly understood. In the present study, we found that HBx expression could induce epithelial–mesenchymal transition in hepatoma and hepatic cells. This effect was shown due to stabilized Snail protein through activating the phosphatidylinositol 3‐kinase/protein kinase B/glycogen synthase kinase‐3β (PI3K/AKT/GSK‐3β) signal pathway by HBx expression. Functional studies revealed that HBx expression could enhance hepatoma cell migration and invasion in vitro. Moreover, stable HBx expression could also facilitate intrahepatic and distant lung metastasis of HCC in a nude mice tumor metastasis model in vivo. The correlation between increased PI3K/AKT/GSK‐3β signaling with elevated Snail protein level was also observed in HCC tumor tissues with intrahepatic metastasis or chronic HBV infection. These results revealed a novel function of HBx in promoting epithelial–mesenchymal transition through Snail protein stabilization by activating PI3K/AKT/GSK‐3β signaling, thus facilitating tumor invasion and metastasis during HCC progression. This could provide a putative molecular mechanism for tumor recurrence and metastasis in HBV‐associated HCC patients.
doi_str_mv 10.1111/cas.12017
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Although the pathological relevance and significance of hepatitis B virus X protein (HBx) in HBV‐associated hepatocarcinogenesis attracted much attention in recent years, the role and molecular mechanism for HBx in hepatoma invasion and metastasis remains poorly understood. In the present study, we found that HBx expression could induce epithelial–mesenchymal transition in hepatoma and hepatic cells. This effect was shown due to stabilized Snail protein through activating the phosphatidylinositol 3‐kinase/protein kinase B/glycogen synthase kinase‐3β (PI3K/AKT/GSK‐3β) signal pathway by HBx expression. Functional studies revealed that HBx expression could enhance hepatoma cell migration and invasion in vitro. Moreover, stable HBx expression could also facilitate intrahepatic and distant lung metastasis of HCC in a nude mice tumor metastasis model in vivo. The correlation between increased PI3K/AKT/GSK‐3β signaling with elevated Snail protein level was also observed in HCC tumor tissues with intrahepatic metastasis or chronic HBV infection. These results revealed a novel function of HBx in promoting epithelial–mesenchymal transition through Snail protein stabilization by activating PI3K/AKT/GSK‐3β signaling, thus facilitating tumor invasion and metastasis during HCC progression. This could provide a putative molecular mechanism for tumor recurrence and metastasis in HBV‐associated HCC patients.</description><identifier>ISSN: 1347-9032</identifier><identifier>EISSN: 1349-7006</identifier><identifier>DOI: 10.1111/cas.12017</identifier><identifier>PMID: 22957763</identifier><language>eng</language><publisher>England: John Wiley and Sons Inc</publisher><subject>1-Phosphatidylinositol 3-kinase ; 3-Phosphoinositide-Dependent Protein Kinases ; AKT protein ; Animal models ; Animals ; Carcinoma, Hepatocellular - metabolism ; Carcinoma, Hepatocellular - pathology ; Cell Line, Tumor ; Cell migration ; Cell Movement ; Chronic infection ; Epithelial-Mesenchymal Transition ; Glycogen synthase kinase 3 ; Hepatitis B virus ; Hepatitis B virus - metabolism ; Hepatitis B virus - pathogenicity ; Hepatocellular carcinoma ; Hepatoma ; Humans ; Liver Neoplasms - metabolism ; Liver Neoplasms - pathology ; Lung ; Male ; Metastases ; Mice ; Mice, Nude ; Molecular modelling ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Original ; Phosphatidylinositol 3-Kinases - genetics ; Phosphatidylinositol 3-Kinases - metabolism ; Protein-Serine-Threonine Kinases - genetics ; Protein-Serine-Threonine Kinases - metabolism ; Signal Transduction ; Snail Family Transcription Factors ; snail protein ; Trans-Activators - genetics ; Trans-Activators - metabolism ; Transcription Factors - genetics ; Transcription Factors - metabolism ; Transfection ; Tumors ; Viral Proteins - genetics ; Viral Proteins - metabolism ; X protein</subject><ispartof>Cancer science, 2012-12, Vol.103 (12), p.2072-2081</ispartof><rights>2012 Japanese Cancer Association</rights><rights>2012 Japanese Cancer Association.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7659259/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7659259/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,727,780,784,885,1417,11562,27924,27925,45574,45575,46052,46476,53791,53793</link.rule.ids><linktorsrc>$$Uhttps://onlinelibrary.wiley.com/doi/abs/10.1111%2Fcas.12017$$EView_record_in_Wiley-Blackwell$$FView_record_in_$$GWiley-Blackwell</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22957763$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Haiou</creatorcontrib><creatorcontrib>Xu, Le</creatorcontrib><creatorcontrib>He, Hongyong</creatorcontrib><creatorcontrib>Zhu, Yu</creatorcontrib><creatorcontrib>Liu, Jing</creatorcontrib><creatorcontrib>Wang, Shanshan</creatorcontrib><creatorcontrib>Chen, Lin</creatorcontrib><creatorcontrib>Wu, Qian</creatorcontrib><creatorcontrib>Xu, Jiejie</creatorcontrib><creatorcontrib>Gu, Jianxin</creatorcontrib><title>Hepatitis B virus X protein promotes hepatoma cell invasion and metastasis by stabilizing Snail protein</title><title>Cancer science</title><addtitle>Cancer Sci</addtitle><description>A high incidence of tumor recurrence and metastasis has been reported in hepatocellular carcinoma (HCC) patients with chronic hepatitis B virus (HBV) infection. Although the pathological relevance and significance of hepatitis B virus X protein (HBx) in HBV‐associated hepatocarcinogenesis attracted much attention in recent years, the role and molecular mechanism for HBx in hepatoma invasion and metastasis remains poorly understood. In the present study, we found that HBx expression could induce epithelial–mesenchymal transition in hepatoma and hepatic cells. This effect was shown due to stabilized Snail protein through activating the phosphatidylinositol 3‐kinase/protein kinase B/glycogen synthase kinase‐3β (PI3K/AKT/GSK‐3β) signal pathway by HBx expression. Functional studies revealed that HBx expression could enhance hepatoma cell migration and invasion in vitro. Moreover, stable HBx expression could also facilitate intrahepatic and distant lung metastasis of HCC in a nude mice tumor metastasis model in vivo. The correlation between increased PI3K/AKT/GSK‐3β signaling with elevated Snail protein level was also observed in HCC tumor tissues with intrahepatic metastasis or chronic HBV infection. These results revealed a novel function of HBx in promoting epithelial–mesenchymal transition through Snail protein stabilization by activating PI3K/AKT/GSK‐3β signaling, thus facilitating tumor invasion and metastasis during HCC progression. This could provide a putative molecular mechanism for tumor recurrence and metastasis in HBV‐associated HCC patients.</description><subject>1-Phosphatidylinositol 3-kinase</subject><subject>3-Phosphoinositide-Dependent Protein Kinases</subject><subject>AKT protein</subject><subject>Animal models</subject><subject>Animals</subject><subject>Carcinoma, Hepatocellular - metabolism</subject><subject>Carcinoma, Hepatocellular - pathology</subject><subject>Cell Line, Tumor</subject><subject>Cell migration</subject><subject>Cell Movement</subject><subject>Chronic infection</subject><subject>Epithelial-Mesenchymal Transition</subject><subject>Glycogen synthase kinase 3</subject><subject>Hepatitis B virus</subject><subject>Hepatitis B virus - metabolism</subject><subject>Hepatitis B virus - pathogenicity</subject><subject>Hepatocellular carcinoma</subject><subject>Hepatoma</subject><subject>Humans</subject><subject>Liver Neoplasms - metabolism</subject><subject>Liver Neoplasms - pathology</subject><subject>Lung</subject><subject>Male</subject><subject>Metastases</subject><subject>Mice</subject><subject>Mice, Nude</subject><subject>Molecular modelling</subject><subject>Neoplasm Invasiveness</subject><subject>Neoplasm Metastasis</subject><subject>Original</subject><subject>Phosphatidylinositol 3-Kinases - genetics</subject><subject>Phosphatidylinositol 3-Kinases - metabolism</subject><subject>Protein-Serine-Threonine Kinases - genetics</subject><subject>Protein-Serine-Threonine Kinases - metabolism</subject><subject>Signal Transduction</subject><subject>Snail Family Transcription Factors</subject><subject>snail protein</subject><subject>Trans-Activators - genetics</subject><subject>Trans-Activators - metabolism</subject><subject>Transcription Factors - genetics</subject><subject>Transcription Factors - metabolism</subject><subject>Transfection</subject><subject>Tumors</subject><subject>Viral Proteins - genetics</subject><subject>Viral Proteins - metabolism</subject><subject>X protein</subject><issn>1347-9032</issn><issn>1349-7006</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkV1LwzAUhoMobn5c-Ackl950S5q2SW6EOdQJAy-m4F1I03TLaNPZtJP56033hd55OHBeOA8vJ3kBuMFogH0NlXQDHCJMT0Afk4gHFKHkdKtpwBEJe-DCuSVCJIl4dA56YchjShPSB_OJXsnGNMbBB7g2devgB1zVVaON7WbplYOLDqpKCZUuCmjsWjpTWShtBkvdSOfbG6Qb6FVqCvNt7BzOrDTFwesKnOWycPp6Py_B-9Pj23gSTF-fX8ajabAknNGAZRmKUE5TGVGV5JJQpRhWXDOlJE4JZSrjNEMqpyglLOYYsTzLMZcoSvM4Jpfgfue7atNSZ0rbppaFWNWmlPVGVNKIvxtrFmJerQVNYh7G3Bvc7Q3q6rPVrhGlcd2zpdVV6wQOWYyY_9ToH2joKUQj7NHb32cd7zkE4YHhDvgyhd4c9xiJLmHhExbbhMV4NNsK8gNOzJsE</recordid><startdate>201212</startdate><enddate>201212</enddate><creator>Liu, Haiou</creator><creator>Xu, Le</creator><creator>He, Hongyong</creator><creator>Zhu, Yu</creator><creator>Liu, Jing</creator><creator>Wang, Shanshan</creator><creator>Chen, Lin</creator><creator>Wu, Qian</creator><creator>Xu, Jiejie</creator><creator>Gu, Jianxin</creator><general>John Wiley and Sons Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope><scope>7U9</scope><scope>H94</scope><scope>5PM</scope></search><sort><creationdate>201212</creationdate><title>Hepatitis B virus X protein promotes hepatoma cell invasion and metastasis by stabilizing Snail protein</title><author>Liu, Haiou ; Xu, Le ; He, Hongyong ; Zhu, Yu ; Liu, Jing ; Wang, Shanshan ; Chen, Lin ; Wu, Qian ; Xu, Jiejie ; Gu, Jianxin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j3987-8dd040f7ba47c6fa37cc81c9e8cca1b378cd97d0cf70b3859108fdf19a04bf553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>1-Phosphatidylinositol 3-kinase</topic><topic>3-Phosphoinositide-Dependent Protein Kinases</topic><topic>AKT protein</topic><topic>Animal models</topic><topic>Animals</topic><topic>Carcinoma, Hepatocellular - metabolism</topic><topic>Carcinoma, Hepatocellular - pathology</topic><topic>Cell Line, Tumor</topic><topic>Cell migration</topic><topic>Cell Movement</topic><topic>Chronic infection</topic><topic>Epithelial-Mesenchymal Transition</topic><topic>Glycogen synthase kinase 3</topic><topic>Hepatitis B virus</topic><topic>Hepatitis B virus - metabolism</topic><topic>Hepatitis B virus - pathogenicity</topic><topic>Hepatocellular carcinoma</topic><topic>Hepatoma</topic><topic>Humans</topic><topic>Liver Neoplasms - metabolism</topic><topic>Liver Neoplasms - pathology</topic><topic>Lung</topic><topic>Male</topic><topic>Metastases</topic><topic>Mice</topic><topic>Mice, Nude</topic><topic>Molecular modelling</topic><topic>Neoplasm Invasiveness</topic><topic>Neoplasm Metastasis</topic><topic>Original</topic><topic>Phosphatidylinositol 3-Kinases - genetics</topic><topic>Phosphatidylinositol 3-Kinases - metabolism</topic><topic>Protein-Serine-Threonine Kinases - genetics</topic><topic>Protein-Serine-Threonine Kinases - metabolism</topic><topic>Signal Transduction</topic><topic>Snail Family Transcription Factors</topic><topic>snail protein</topic><topic>Trans-Activators - genetics</topic><topic>Trans-Activators - metabolism</topic><topic>Transcription Factors - genetics</topic><topic>Transcription Factors - metabolism</topic><topic>Transfection</topic><topic>Tumors</topic><topic>Viral Proteins - genetics</topic><topic>Viral Proteins - metabolism</topic><topic>X protein</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Haiou</creatorcontrib><creatorcontrib>Xu, Le</creatorcontrib><creatorcontrib>He, Hongyong</creatorcontrib><creatorcontrib>Zhu, Yu</creatorcontrib><creatorcontrib>Liu, Jing</creatorcontrib><creatorcontrib>Wang, Shanshan</creatorcontrib><creatorcontrib>Chen, Lin</creatorcontrib><creatorcontrib>Wu, Qian</creatorcontrib><creatorcontrib>Xu, Jiejie</creatorcontrib><creatorcontrib>Gu, Jianxin</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><collection>Virology and AIDS Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Cancer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Liu, Haiou</au><au>Xu, Le</au><au>He, Hongyong</au><au>Zhu, Yu</au><au>Liu, Jing</au><au>Wang, Shanshan</au><au>Chen, Lin</au><au>Wu, Qian</au><au>Xu, Jiejie</au><au>Gu, Jianxin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hepatitis B virus X protein promotes hepatoma cell invasion and metastasis by stabilizing Snail protein</atitle><jtitle>Cancer science</jtitle><addtitle>Cancer Sci</addtitle><date>2012-12</date><risdate>2012</risdate><volume>103</volume><issue>12</issue><spage>2072</spage><epage>2081</epage><pages>2072-2081</pages><issn>1347-9032</issn><eissn>1349-7006</eissn><abstract>A high incidence of tumor recurrence and metastasis has been reported in hepatocellular carcinoma (HCC) patients with chronic hepatitis B virus (HBV) infection. Although the pathological relevance and significance of hepatitis B virus X protein (HBx) in HBV‐associated hepatocarcinogenesis attracted much attention in recent years, the role and molecular mechanism for HBx in hepatoma invasion and metastasis remains poorly understood. In the present study, we found that HBx expression could induce epithelial–mesenchymal transition in hepatoma and hepatic cells. This effect was shown due to stabilized Snail protein through activating the phosphatidylinositol 3‐kinase/protein kinase B/glycogen synthase kinase‐3β (PI3K/AKT/GSK‐3β) signal pathway by HBx expression. Functional studies revealed that HBx expression could enhance hepatoma cell migration and invasion in vitro. Moreover, stable HBx expression could also facilitate intrahepatic and distant lung metastasis of HCC in a nude mice tumor metastasis model in vivo. The correlation between increased PI3K/AKT/GSK‐3β signaling with elevated Snail protein level was also observed in HCC tumor tissues with intrahepatic metastasis or chronic HBV infection. These results revealed a novel function of HBx in promoting epithelial–mesenchymal transition through Snail protein stabilization by activating PI3K/AKT/GSK‐3β signaling, thus facilitating tumor invasion and metastasis during HCC progression. This could provide a putative molecular mechanism for tumor recurrence and metastasis in HBV‐associated HCC patients.</abstract><cop>England</cop><pub>John Wiley and Sons Inc</pub><pmid>22957763</pmid><doi>10.1111/cas.12017</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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source Wiley-Blackwell Open Access Titles
subjects 1-Phosphatidylinositol 3-kinase
3-Phosphoinositide-Dependent Protein Kinases
AKT protein
Animal models
Animals
Carcinoma, Hepatocellular - metabolism
Carcinoma, Hepatocellular - pathology
Cell Line, Tumor
Cell migration
Cell Movement
Chronic infection
Epithelial-Mesenchymal Transition
Glycogen synthase kinase 3
Hepatitis B virus
Hepatitis B virus - metabolism
Hepatitis B virus - pathogenicity
Hepatocellular carcinoma
Hepatoma
Humans
Liver Neoplasms - metabolism
Liver Neoplasms - pathology
Lung
Male
Metastases
Mice
Mice, Nude
Molecular modelling
Neoplasm Invasiveness
Neoplasm Metastasis
Original
Phosphatidylinositol 3-Kinases - genetics
Phosphatidylinositol 3-Kinases - metabolism
Protein-Serine-Threonine Kinases - genetics
Protein-Serine-Threonine Kinases - metabolism
Signal Transduction
Snail Family Transcription Factors
snail protein
Trans-Activators - genetics
Trans-Activators - metabolism
Transcription Factors - genetics
Transcription Factors - metabolism
Transfection
Tumors
Viral Proteins - genetics
Viral Proteins - metabolism
X protein
title Hepatitis B virus X protein promotes hepatoma cell invasion and metastasis by stabilizing Snail protein
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