公司是*的ATCC細(xì)胞供應(yīng)商,提供人胚肺成纖維細(xì)胞;IMR-90運(yùn)輸的報(bào)價(jià),咨詢,稱技術(shù)服務(wù),咨詢選購(gòu)。
細(xì)胞名稱:人胚肺成纖維細(xì)胞;IMR-90運(yùn)輸
細(xì)胞形態(tài): 細(xì)胞株
生長(zhǎng)特性:貼壁 懸浮 半貼壁
傳代時(shí)間:2-3天 3-5天
傳代比例:1:2~1:3 1:1~1:2
儲(chǔ)存:液氮
保存與運(yùn)輸: 干冰常溫運(yùn)輸
細(xì)胞在培養(yǎng)瓶長(zhǎng)成致密單層后,已基本上飽和,為使細(xì)胞能繼續(xù)生長(zhǎng),同時(shí)
也將細(xì)胞數(shù)量擴(kuò)大,就必須進(jìn)行傳代(再培養(yǎng))。 傳代培養(yǎng)也是一種將細(xì)胞種保存下去的方法。同時(shí)也是利用培養(yǎng)細(xì)胞進(jìn)行各種實(shí)驗(yàn)的必經(jīng)過程。懸浮型細(xì)胞直接分瓶就可以,而貼壁細(xì)胞需經(jīng)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(shí)(或隔夜)→液氮槽*儲(chǔ)存。
冷凍保存方法二:冷凍管置于已設(shè)定程序之可程序降溫機(jī)中每分鐘降1-3℃至–80℃以下,再放入液氮槽期儲(chǔ)存。-20℃不可超過1小時(shí),以防止冰晶過大,造成細(xì)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(xì)胞活力狀態(tài)良好的細(xì)胞株1420株,其中絕大部分是近年來從美國(guó)ATCC和NIH分批引進(jìn)的細(xì)胞種子,少部分來自全國(guó)各地細(xì)胞研究所,細(xì)胞來源可靠,背景資料清晰,代數(shù)年輕,活力好
傳代方法:細(xì)胞*匯合時(shí),倒掉舊液,加入消化液(0.25%*+0.03%EDTA)2ml消化,顯微鏡下觀察細(xì)胞*脫離瓶壁分離成單個(gè)細(xì)胞后棄掉*,加培養(yǎng)基混勻分瓶,T25瓶中加培養(yǎng)基至6-8ml,T75瓶加培養(yǎng)基至20ml,37℃,5%CO2孵箱培養(yǎng)。
培養(yǎng)是生物學(xué)和醫(yī)學(xué)研究zui常用的手段之一,可分為原代培養(yǎng)和傳代培養(yǎng)兩種。原代培養(yǎng)是直接從生物體獲取細(xì)胞進(jìn)行培養(yǎng)。由于細(xì)胞剛剛從活體組織分離出來,故更接近于生物體內(nèi)的生活狀態(tài)。這一方法可為研究生物體細(xì)胞的生長(zhǎng)、代謝、繁殖提供有力的手段,同時(shí)也為以后傳代培養(yǎng)創(chuàng)造條件。利用此方法還可直接服務(wù)于臨床實(shí)踐
操作步驟:
1)貼壁細(xì)胞傳代:提前將培養(yǎng)基、PBS放入37℃水浴鍋內(nèi)預(yù)熱,用75%酒精擦拭后再放入超凈臺(tái)內(nèi),吸除或倒掉細(xì)胞瓶?jī)?nèi)舊培養(yǎng)液,加少量PBS潤(rùn)洗細(xì)胞,加入適量*,使*的量能蓋住細(xì)胞,37℃孵育,每隔2~3min顯微鏡下觀察,待貼壁細(xì)胞間間隙變大、細(xì)胞趨于圓形但還未漂起時(shí)棄去*,加入新鮮培養(yǎng)基,晃動(dòng)細(xì)胞瓶,終止*作用,用吸管小心吹打貼壁的細(xì)胞,制成細(xì)胞懸液??刂拼荡虻牧Χ?,避免產(chǎn)生大量的氣泡,將細(xì)胞懸液分別接種到另外的2~3個(gè)細(xì)胞瓶?jī)?nèi),加入新鮮培養(yǎng)基,置37℃溫箱培養(yǎng),隔天觀察貼壁生長(zhǎng)情況。
2)懸浮細(xì)胞傳代:將細(xì)胞懸液轉(zhuǎn)移到無菌離心管內(nèi),1000rpm離心5min,棄去上清,加入新鮮的培養(yǎng)基,用吸管小心吹散沉淀,制成細(xì)胞懸液,將細(xì)胞懸液分別接種到另外的2~3個(gè)細(xì)胞瓶?jī)?nèi),加入新鮮培養(yǎng)基,置37℃溫箱培養(yǎng)。Mouse Cyclin D2 ELISA Kit
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