Suppression of tumorigenesis and metastasis of hepatocellular carcinoma by shRNA interference targeting on homeoprotein Six1

We previously demonstrated that the overexpression of homeoprotein Six1 in hepatocellular carcinoma (HCC) patients is associated with venous infiltration, advanced pathologic tumor metastasis (pTNM) stage and poor overall survival rate (Ng et al. Br J Cancer 2006;95:1050–5). In this study, short hai...

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Veröffentlicht in:International journal of cancer 2010-08, Vol.127 (4), p.859-872
Hauptverfasser: Ng, Kevin T.P., Lee, Terence K.W., Cheng, Qiao, Wo, Jana Y.H., Sun, Chris K.W., Guo, Dong‐Yong, Lim, Zophia X., Lo, Chung‐Mau, Poon, Ronnie T.P., Fan, Sheung‐Tat, Man, Kwan
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container_end_page 872
container_issue 4
container_start_page 859
container_title International journal of cancer
container_volume 127
creator Ng, Kevin T.P.
Lee, Terence K.W.
Cheng, Qiao
Wo, Jana Y.H.
Sun, Chris K.W.
Guo, Dong‐Yong
Lim, Zophia X.
Lo, Chung‐Mau
Poon, Ronnie T.P.
Fan, Sheung‐Tat
Man, Kwan
description We previously demonstrated that the overexpression of homeoprotein Six1 in hepatocellular carcinoma (HCC) patients is associated with venous infiltration, advanced pathologic tumor metastasis (pTNM) stage and poor overall survival rate (Ng et al. Br J Cancer 2006;95:1050–5). In this study, short hairpin RNA (shRNA) interference approach was used to suppress the expression of Six1 in a metastatic HCC cell line MHCC97L. Stable transfectant MHCC97L‐shSix1 carrying Six1‐specific shRNA plasmid was established to downregulate Six1 expression to about 40% when compared with MHCC97L‐Control. In vitro functional assays demonstrated that the growth rate and proliferation ability of MHCC97L‐shSix1 cells were markedly decreased. Moreover, significant decrease of cell motility and invasiveness were observed in MHCC97L‐shSix1 cells. Data from in vivo xenograft tumorigenesis model demonstrated that the size of tumor in MHCC97L‐shSix1 group was dramatically reduced. Experimental and spontaneous metastasis models indicated that targeting Six1 suppression noticeably reduced the pulmonary metastasis in MHCC97L‐shSix1 group. To identify Six1‐regulated targets, cDNA microarray was employed to compare the expression profiles of MHCC97L‐Control and MHCC97L‐shSix1 cells. Twenty‐eight downregulated and 24 upregulated genes with known functions were identified in MHCC97L‐shSix1. The functions of these target genes are involved in diverse biological activities. Our data suggest that Six1 may be involved in regulation of proliferation and invasiveness of HCC; thus targeting suppression of Six1 is a viable option for treating HCC patients.
doi_str_mv 10.1002/ijc.25105
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Br J Cancer 2006;95:1050–5). In this study, short hairpin RNA (shRNA) interference approach was used to suppress the expression of Six1 in a metastatic HCC cell line MHCC97L. Stable transfectant MHCC97L‐shSix1 carrying Six1‐specific shRNA plasmid was established to downregulate Six1 expression to about 40% when compared with MHCC97L‐Control. In vitro functional assays demonstrated that the growth rate and proliferation ability of MHCC97L‐shSix1 cells were markedly decreased. Moreover, significant decrease of cell motility and invasiveness were observed in MHCC97L‐shSix1 cells. Data from in vivo xenograft tumorigenesis model demonstrated that the size of tumor in MHCC97L‐shSix1 group was dramatically reduced. Experimental and spontaneous metastasis models indicated that targeting Six1 suppression noticeably reduced the pulmonary metastasis in MHCC97L‐shSix1 group. To identify Six1‐regulated targets, cDNA microarray was employed to compare the expression profiles of MHCC97L‐Control and MHCC97L‐shSix1 cells. Twenty‐eight downregulated and 24 upregulated genes with known functions were identified in MHCC97L‐shSix1. The functions of these target genes are involved in diverse biological activities. 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Abdomen ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic ; hepatocellular carcinoma ; Homeodomain Proteins - antagonists &amp; inhibitors ; Homeodomain Proteins - genetics ; Homeodomain Proteins - metabolism ; homeoprotein Six1 ; Humans ; interference ; Kidney Neoplasms - genetics ; Kidney Neoplasms - prevention &amp; control ; Kidney Neoplasms - secondary ; Liver Neoplasms, Experimental - genetics ; Liver Neoplasms, Experimental - pathology ; Liver Neoplasms, Experimental - prevention &amp; control ; Liver. Biliary tract. Portal circulation. Exocrine pancreas ; Medical sciences ; metastasis ; Mice ; Mice, Nude ; Oligonucleotide Array Sequence Analysis ; Reverse Transcriptase Polymerase Chain Reaction ; RNA, Messenger - genetics ; RNA, Messenger - metabolism ; RNA, Small Interfering - pharmacology ; short hairpin RNA (shRNA) ; Splenic Neoplasms - genetics ; Splenic Neoplasms - prevention &amp; control ; Splenic Neoplasms - secondary ; Tumors ; Wound Healing</subject><ispartof>International journal of cancer, 2010-08, Vol.127 (4), p.859-872</ispartof><rights>Copyright © 2009 UICC</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4555-86b56450ed9140f18927652b5959eea58c23307a717fcb409fe35eb583cbdee13</citedby><cites>FETCH-LOGICAL-c4555-86b56450ed9140f18927652b5959eea58c23307a717fcb409fe35eb583cbdee13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fijc.25105$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fijc.25105$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=22956196$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20013809$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ng, Kevin T.P.</creatorcontrib><creatorcontrib>Lee, Terence K.W.</creatorcontrib><creatorcontrib>Cheng, Qiao</creatorcontrib><creatorcontrib>Wo, Jana Y.H.</creatorcontrib><creatorcontrib>Sun, Chris K.W.</creatorcontrib><creatorcontrib>Guo, Dong‐Yong</creatorcontrib><creatorcontrib>Lim, Zophia X.</creatorcontrib><creatorcontrib>Lo, Chung‐Mau</creatorcontrib><creatorcontrib>Poon, Ronnie T.P.</creatorcontrib><creatorcontrib>Fan, Sheung‐Tat</creatorcontrib><creatorcontrib>Man, Kwan</creatorcontrib><title>Suppression of tumorigenesis and metastasis of hepatocellular carcinoma by shRNA interference targeting on homeoprotein Six1</title><title>International journal of cancer</title><addtitle>Int J Cancer</addtitle><description>We previously demonstrated that the overexpression of homeoprotein Six1 in hepatocellular carcinoma (HCC) patients is associated with venous infiltration, advanced pathologic tumor metastasis (pTNM) stage and poor overall survival rate (Ng et al. 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To identify Six1‐regulated targets, cDNA microarray was employed to compare the expression profiles of MHCC97L‐Control and MHCC97L‐shSix1 cells. Twenty‐eight downregulated and 24 upregulated genes with known functions were identified in MHCC97L‐shSix1. The functions of these target genes are involved in diverse biological activities. 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Abdomen</subject><subject>Gene Expression Profiling</subject><subject>Gene Expression Regulation, Neoplastic</subject><subject>hepatocellular carcinoma</subject><subject>Homeodomain Proteins - antagonists &amp; inhibitors</subject><subject>Homeodomain Proteins - genetics</subject><subject>Homeodomain Proteins - metabolism</subject><subject>homeoprotein Six1</subject><subject>Humans</subject><subject>interference</subject><subject>Kidney Neoplasms - genetics</subject><subject>Kidney Neoplasms - prevention &amp; control</subject><subject>Kidney Neoplasms - secondary</subject><subject>Liver Neoplasms, Experimental - genetics</subject><subject>Liver Neoplasms, Experimental - pathology</subject><subject>Liver Neoplasms, Experimental - prevention &amp; control</subject><subject>Liver. Biliary tract. Portal circulation. 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Br J Cancer 2006;95:1050–5). In this study, short hairpin RNA (shRNA) interference approach was used to suppress the expression of Six1 in a metastatic HCC cell line MHCC97L. Stable transfectant MHCC97L‐shSix1 carrying Six1‐specific shRNA plasmid was established to downregulate Six1 expression to about 40% when compared with MHCC97L‐Control. In vitro functional assays demonstrated that the growth rate and proliferation ability of MHCC97L‐shSix1 cells were markedly decreased. Moreover, significant decrease of cell motility and invasiveness were observed in MHCC97L‐shSix1 cells. Data from in vivo xenograft tumorigenesis model demonstrated that the size of tumor in MHCC97L‐shSix1 group was dramatically reduced. Experimental and spontaneous metastasis models indicated that targeting Six1 suppression noticeably reduced the pulmonary metastasis in MHCC97L‐shSix1 group. To identify Six1‐regulated targets, cDNA microarray was employed to compare the expression profiles of MHCC97L‐Control and MHCC97L‐shSix1 cells. Twenty‐eight downregulated and 24 upregulated genes with known functions were identified in MHCC97L‐shSix1. The functions of these target genes are involved in diverse biological activities. Our data suggest that Six1 may be involved in regulation of proliferation and invasiveness of HCC; thus targeting suppression of Six1 is a viable option for treating HCC patients.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>20013809</pmid><doi>10.1002/ijc.25105</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Biological and medical sciences
Biomarkers, Tumor - genetics
Biomarkers, Tumor - metabolism
Blotting, Western
Carcinoma, Hepatocellular - genetics
Carcinoma, Hepatocellular - prevention & control
Carcinoma, Hepatocellular - secondary
cDNA microarray
Cell Adhesion
Cell Cycle
Cell Movement
Cell Proliferation
Colony-Forming Units Assay
Fluorescent Antibody Technique
Gastroenterology. Liver. Pancreas. Abdomen
Gene Expression Profiling
Gene Expression Regulation, Neoplastic
hepatocellular carcinoma
Homeodomain Proteins - antagonists & inhibitors
Homeodomain Proteins - genetics
Homeodomain Proteins - metabolism
homeoprotein Six1
Humans
interference
Kidney Neoplasms - genetics
Kidney Neoplasms - prevention & control
Kidney Neoplasms - secondary
Liver Neoplasms, Experimental - genetics
Liver Neoplasms, Experimental - pathology
Liver Neoplasms, Experimental - prevention & control
Liver. Biliary tract. Portal circulation. Exocrine pancreas
Medical sciences
metastasis
Mice
Mice, Nude
Oligonucleotide Array Sequence Analysis
Reverse Transcriptase Polymerase Chain Reaction
RNA, Messenger - genetics
RNA, Messenger - metabolism
RNA, Small Interfering - pharmacology
short hairpin RNA (shRNA)
Splenic Neoplasms - genetics
Splenic Neoplasms - prevention & control
Splenic Neoplasms - secondary
Tumors
Wound Healing
title Suppression of tumorigenesis and metastasis of hepatocellular carcinoma by shRNA interference targeting on homeoprotein Six1
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