[求救] western 壓片背景值太高
麻煩各位幫忙trouble shooting!!!
已爬過之前的文章,也嘗試之前的方法,但我western壓片結果還是很髒!
樣品為小鼠肝臟 protein loading量為40ug 體積10-15uL
running條件上膠60V 下膠80V 室溫
transfer(濕式)條件為400mA 120min 埋冰 使用0.45孔徑PVDF
blocking為Genetex blocking buffer 使用前回到室溫後再blocking 30min
wash是使用Millipore SNAP i.d.2 http://imgur.com/1Acr2hv
將TBST倒入方格中wash
一抗1:1000 4度C overnight (MMP-9為Cell signaling MMP-2為St John's Laboratory)
二抗1:10000 室溫 10min (Genetex rabbit)
ECL為Millipore 瀝掉多餘的ECL後再去暗房壓片
壓片為傳統手洗壓片
其中配制電泳膠的溶液全部都已經重新配過,上膠下膠ph值皆正常(上:6.8,下:8.8)
壓片結果圖
http://imgur.com/vM127W2
lane的痕跡非常明顯,定量會有困難。
再麻煩大家幫忙了!!!萬分感謝!!!!!!!!
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