Genetic study reveals new drug target to cure most common type of liver cancer | Health News

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Washington: Drugs targeting the gene MAGEA3 may help block the growth of hepatocellular carcinoma (HCC), the most common type of primary liver cancer and one of the leading causes of cancer deaths in the country, new research found. The conclusion of the new study analyzing the genetics of HCC tumours was published in the journal PLOS Genetics by Augusto Villanueva of the Icahn School of Medicine at Mount Sinai and colleagues.

Scientists have previously discovered several genes that drive the growth of HCC tumours, yet treatment benefit from approved drugs is still limited. In the new study, Villanueva and colleagues collected 44 tumour biopsies from 12 HCC patients.

The researchers used RNA sequencing to study which genes were more highly expressed in high-grade regions of a tumour compared to low-grade regions of the same tumour. One family of genes- cancer-testis antigens (CTAs) -was recurrently over-expressed in the most aggressive regions of tumours.

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CTAs, most of which are located on the X chromosome, are usually expressed in male germ cells within the testes and are believed to play roles in spermatogenesis as well as protecting germ cells from stressors and cell death.

Villanueva`s team found that CTAs, and especially MAGEA3, are associated with poor prognosis in HCCs. Moreover, when the group blocked the expression of MAGEA3 in isolated HCC cells, the cells could no longer proliferate and eventually died.

When the group overexpressed MAGE3 in the liver cells of mice prone to HCC, the animals died of cancer more quickly. Future studies are needed to replicate the results in larger patient populations and probe whether MAGEA3 itself or its downstream targets, are more effective to target therapeutically.

“The study uncovered the role of cancer-testis antigens, specifically MAGEA3, in liver cancer progression,” Villanueva adds. “It demonstrates how selective inhibition of MAGEA3 has anti-tumoral effects on experimental models of this disease. Overall, the study provides the proof-of-principle to test MAGEA3 inhibition in early phase clinical trials for the patient with primary liver cancer.”

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$(‘div[id^=”row”]’).each(function(){
//console.log(“article” + $(this).children().find(‘.left-block’).attr(“id”) + $(this).children().find(‘.left-block’).attr(‘data-url’));
if($(this).offset().top + $(this).height() > cutoff){
//console.log(“$$” + $(this).children().find(‘.left-block’).attr(‘data-url’));
if(prevLoc != $(this).children().find(‘.left-block’).attr(‘data-url’)){
prevLoc = $(this).children().find(‘.left-block’).attr(‘data-url’);
$(‘html head’).find(‘title’).text($(this).children().find(‘.left-block’).attr(‘data-title’));
$(‘meta[name=description]’).attr(“content”,$(this).children().find(‘.left-block’).attr(‘data-summary’));
$(‘meta[name=keywords]’).attr(“content”,$(this).children().find(‘.left-block’).attr(‘data-keyword’));
$(‘meta[name=news_keywords]’).attr(“content”,$(this).children().find(‘.left-block’).attr(‘data-keyword’));

pSUPERFLY.virtualPage(prevLoc,$(this).children().find(‘.left-block’).attr(‘data-title’));
//console.log(“Summary: ” + $(this).children().find(‘.left-block’).attr(‘data-summary’));
//console.log(“Keyword: ” + $(this).children().find(‘.left-block’).attr(‘data-keyword’));
//history.pushState(” ,”, prevLoc);
loadshare(prevLoc);
}
return false; // stops the iteration after the first one on screen
}
});
if(lastHeight + last.height() < $(document).scrollTop() + $(window).height()){
//console.log("**get");
url = $(next_selector).attr('href');
x=$(next_selector).attr('id');
//console.log("x:" + x);
//handle.autopager('load');

/*setTimeout(function(){
//twttr.widgets.load();
//loadDisqus(jQuery(this), disqus_identifier, disqus_url);
}, 6000);*/
}
//lastoff = last.offset();
//console.log("**" + lastoff + "**");
});
//$( ".content-area" ).click(function(event) {
// console.log(event.target.nodeName);
//});

/*$( ".comment-button" ).live("click", disqusToggle);
function disqusToggle() {
var id = $(this).attr("id");
$("#disqus_thread1" + id).toggle();
};*/
//$(".main-rhs2371665").theiaStickySidebar();
var prev_content_height = $(content_selector).height();
//$(function() {
var layout = $(content_selector);
var st = 0;
///});

}
}
});

/*}
};*/
})(jQuery);

function on_load_google_ad(PWT){
var inad1, inad2 = ”;
googletag.cmd.push(function() {
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_ATF_970x90’, [[970, 90], [970, 250], [970, 66], [728, 90]], ‘div-gpt-ad-1504525832454-0’).addService(googletag.pubads());
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_ATF_300x250’, [[300, 600], [300, 250]], ‘div-article-rhs-atf-ad’).addService(googletag.pubads());
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_BTF_1_300x250’, [300, 250], ‘div-gpt-ad-1504525832454-2’).addService(googletag.pubads());
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_OOP_1x1’, [1, 1], ‘div-gpt-ad-1504526235866-6’).addService(googletag.pubads());
var inarticle1 = document.getElementById(‘div-gpt-ad-AS-Inarticle-1’);
if (typeof(inarticle1) != ‘undefined’ && inarticle1 != null)
{
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_Inarticle_1_300x250’, [[300, 250]], ‘div-gpt-ad-AS-Inarticle-1’).addService(googletag.pubads());
inad1 = “true”;
}
var inarticle2 = document.getElementById(‘div-gpt-ad-AS-Inarticle-2’);
if (typeof(inarticle2) != ‘undefined’ && inarticle2 != null)
{
googletag.defineSlot(‘/11440465/Zeenews_English_Web/Zeenews_English_AS_Inarticle_2_300x250’, [[300, 250]], ‘div-gpt-ad-AS-Inarticle-2’).addService(googletag.pubads());
inad2 = “true”;
}

googletag.pubads().setTargeting(‘category’, [“article”,”Health”,”Cancer”,”Tumour”,”Cancerous Genes”,”Genetics”,”Liver Cancer”]);
googletag.pubads().enableLazyLoad({ fetchMarginPercent: 50, renderMarginPercent: 50, mobileScaling: 2.0 });
googletag.pubads().disableInitialLoad();
googletag.pubads().enableAsyncRendering();
googletag.pubads().set(‘page_url’,’https://zeenews.india.com/’);
googletag.pubads().collapseEmptyDivs();
googletag.enableServices();
// OpenWrap code START here
if(typeof PWT.requestBids === ‘function’){
PWT.requestBids(
PWT.generateConfForGPT(googletag.pubads().getSlots()),
function(adUnitsArray) {
PWT.addKeyValuePairsToGPTSlots(adUnitsArray);
PWT.ow_BidsReceived = true;
initAdserver(false);
}
);
}
// No need to handle “else” part as we have A9 wrapper on page
// OpenWrap code END here
var FAILSAFE_TIMEOUT = 1000; // this timeout should be more than OpenWrap and A9 timeout
setTimeout(function() {
initAdserver(true); // calling this function with forced mode set to true so that GPT API is always executed
}, FAILSAFE_TIMEOUT);
});
googletag.cmd.push(function() { googletag.display(‘div-article-rhs-atf-ad’); });
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-1504525832454-0’); });
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-1504525832454-2’); });
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-1504526235866-6’); });
if(inad1){
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-AS-Inarticle-1’); });
}
if(inad2){
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-AS-Inarticle-2’); });
}

}
on_load_google_ad(PWT);

function on_load_fb_twitter_widgets(){
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.9”;
fjs.parentNode.insertBefore(js, fjs);
}(document, ‘script’, ‘facebook-jssdk’));

window.twttr = (function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0],
t = window.twttr || {};
if (d.getElementById(id)) return t;
js = d.createElement(s);
js.id = id;
js.src = “https://platform.twitter.com/widgets.js”;
fjs.parentNode.insertBefore(js, fjs);
t._e = [];
t.ready = function(f) {

t._e.push(f);
};
return t;
}(document, “script”, “twitter-wjs”));
}

//setTimeout(function() { on_load_google_ad(); }, 5000);
setTimeout(function() {
on_load_fb_twitter_widgets();
}, 5000);



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