公司是*的ATCC細胞供應商,提供人胚腎細胞;293FT*
的報價,咨詢,稱技術服務,咨詢選購。
細胞名稱:人胚腎細胞;293FT*
細胞形態: 細胞株
生長特性:貼壁 懸浮 半貼壁
傳代時間:2-3天 3-5天
傳代比例:1:2~1:3 1:1~1:2
儲存:液氮
保存與運輸: 干冰常溫運輸
細胞在培養瓶長成致密單層后,已基本上飽和,為使細胞能繼續生長,同時
也將細胞數量擴大,就必須進行傳代(再培養)。 傳代培養也是一種將細胞種保存下去的方法。同時也是利用培養細胞進行各種實驗的必經過程。懸浮型細胞直接分瓶就可以,而貼壁細胞需經消化后才能分瓶。
冷凍保存方法一:冷凍管置于4℃300分鐘→(-20℃30分鐘*)→-80℃16~18小時(或隔夜)→液氮槽*儲存。
冷凍保存方法二:冷凍管置于已設定程序之可程序降溫機中每分鐘降1-3℃至–80℃以下,再放入液氮槽期儲存。-20℃不可超過1小時,以防止冰晶過大,造成細胞大量死亡,也可跳過此步驟直接放入-80℃冰箱中,但存活率稍微降低一些。
迄今為止,公司收錄背景資料清晰,細胞活力狀態良好的細胞株1420株,其中絕大部分是近年來從美國ATCC和NIH分批引進的細胞種子,少部分來自全國各地細胞研究所,細胞來源可靠,背景資料清晰,代數年輕,活力好
傳代方法:細胞*匯合時,倒掉舊液,加入消化液(0.25%*+0.03%EDTA)2ml消化,顯微鏡下觀察細胞*脫離瓶壁分離成單個細胞后棄掉*,加培養基混勻分瓶,T25瓶中加培養基至6-8ml,T75瓶加培養基至20ml,37℃,5%CO2孵箱培養。
培養是生物學和醫學研究zui常用的手段之一,可分為原代培養和傳代培養兩種。原代培養是直接從生物體獲取細胞進行培養。由于細胞剛剛從活體組織分離出來,故更接近于生物體內的生活狀態。這一方法可為研究生物體細胞的生長、代謝、繁殖提供有力的手段,同時也為以后傳代培養創造條件。利用此方法還可直接服務于臨床實踐
操作步驟:
1)貼壁細胞傳代:提前將培養基、PBS放入37℃水浴鍋內預熱,用75%酒精擦拭后再放入超凈臺內,吸除或倒掉細胞瓶內舊培養液,加少量PBS潤洗細胞,加入適量*,使*的量能蓋住細胞,37℃孵育,每隔2~3min顯微鏡下觀察,待貼壁細胞間間隙變大、細胞趨于圓形但還未漂起時棄去*,加入新鮮培養基,晃動細胞瓶,終止*作用,用吸管小心吹打貼壁的細胞,制成細胞懸液。控制吹打的力度,避免產生大量的氣泡,將細胞懸液分別接種到另外的2~3個細胞瓶內,加入新鮮培養基,置37℃溫箱培養,隔天觀察貼壁生長情況。
2)懸浮細胞傳代:將細胞懸液轉移到無菌離心管內,1000rpm離心5min,棄去上清,加入新鮮的培養基,用吸管小心吹散沉淀,制成細胞懸液,將細胞懸液分別接種到另外的2~3個細胞瓶內,加入新鮮培養基,置37℃溫箱培養。
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