Cell Counting Kit (CCK-8) CCK-8試劑盒
產品名稱: Cell Counting Kit (CCK-8) CCK-8試劑盒
英文名稱: Cell Counting Kit (CCK-8) CCK-8試劑盒
產品編號: 40203ES
產品價格: 詢價
產品產地: 翌圣生物
品牌商標: Yeasen
更新時間: 2025-11-13T12:42:06
使用范圍: null
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Cell Counting Kit-8簡稱CCK-8試劑盒,是一種基于WST-8(化學名:2-(2-甲氧基-4-硝苯基)-3-(4-硝苯基)-5-(2,4-二磺基苯)-2H-四唑單鈉鹽)的廣泛應用于細胞增殖和細胞毒性的快速高靈敏度檢測試劑盒。
WST-8屬于MTT的升級產品,工作原理為:在電子耦合試劑存在的情況下,可以被線粒體內的脫氫酶還原生成高度水溶性的橙黃色的甲臜產物(formazan)。顏色的深淺與細胞的增殖成正比,與細胞毒性成反比。使用酶標儀在450nm波長處測定OD值,間接反映活細胞數量。
CCK-8法應用非常廣泛,如藥物篩選、細胞增殖測定、細胞毒性測定、腫瘤藥敏試驗以及生物因子的活性檢測等。
操作簡單:產品本身是液體,即開即用;甲臜產物是水溶性的,不需要用有機溶劑溶解。
靈敏度高:線性范圍廣,靈敏度高,重復性好。
細胞毒性低:細胞毒性非常低,對后續實驗沒有影響。
穩定性好:培養液中酚紅和血清的存在不會對檢測造成影響。
應用性廣:可用于大規模、高通量樣品檢測。
同類產品性能比較:

細胞類型:293T人胚腎細胞;培養基:10% FBS 高糖DMEM培養基
孵育時間:3h;細胞數目:1000
引用已發表文獻數據:
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| GIST-T1細胞增殖檢測CRTL為空白對照組,Lv-shNC為陰性干擾組,Lv-shOrai1為Orai1敲除組 | ROS17/2.8細胞增殖檢測WT為野生型,KO為BK基因敲除組 |
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| rMSCs細胞活性檢測在2.5,5,10,20ug/mL的濃度 G/SWCNT hybrids, G, and SWCNTs處理下的細胞活性檢測 | rMSCs細胞增殖檢測G/SWCNT hybrids 在2.5,5,10,20ug/mL的濃度下處理1,3和7天細胞活性檢測 |
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| Huh6細胞干擾EZH2基因和陰性對照組細胞活性檢測 | HepG2細胞干擾EZH2基因和陰性對照組細胞活性檢測 |
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| GIST-T1 細胞活性檢測分別在2-APB 不同濃度0, 50, 100, and 150µM處理下的細胞活力檢測 | GIST-T1 細胞活性檢測分別在SKF-96365不同濃度下0, 0.5, 1.0, and 1.5µM處理下胞活力檢測 |
冰袋運輸,-25~-15“C避光干燥保存,有效期2年。
Q:CCK-8 的保存和穩定性如何?
A:CCK-8 穩定性高,避光條件-20℃有效期 2 年,4℃有效期 1 年。經常使用建議 4℃ 保存,避免反復凍融。CCK 正常顏色為粉紅色,若顏色發生明顯偏差,質量可能有發生變化。
Q:CCK-8 的細胞毒性如何?
A:CCK-8 毒性非常低,因此 CCK-8 檢測完后相同的細胞還能用于其它細胞增殖檢測如結晶紫染色法,中性紅染色法或 DNA 熒光染色法。
Q:CCK-8 會對活細胞進行染色嗎?
A:不會,首先 WST-8 不會進入細胞染色,整個顯色反應都是在培養體系中進行的。另外 WST 和 WST-8 甲臜都屬于高度水溶性組分,反應結束更換新的培養液,即可清除外源組分。因為 CCK-8 是基于 WST-8 能夠被線粒體內的脫氫酶還原生成高度水溶性的橙黃色甲臜產物(Formazan)的原理研制開發的,因而不會對細胞進行染色。
Q:培養基的本底顏色如酚紅會不會影響細胞活性的檢測呢?
A:不會的,培養基中酚紅的吸光度可以在計算時,通過扣除空白孔中本底的吸光度而消去,因此不會對檢測造成影響。
Q:在加入 CCK-8 時可否不更換培養基?
A:一般情況下可以不更換培養基。但是如果培養基里有氧化還原性物質的話,有可能會產生誤差,必須更換其它培養基。
Q:在實驗中OD 值太高或者太低,怎么解決?
A:太高可以縮短加入CCK-8 后的培養時間。例如:可以把加入CCK-8 試劑后的培養時間由 2 小時縮短為 1 小時。此外,可適當減少細胞的數量。太低可以采取 2 個辦法: 1、適當增加細胞數量 2、延長加入CCK-8 試劑后的反應時間。
Q:哪些物質會影響 CCK-8 的實驗測定結果?
A:當培養體系內含有還原性物質存在時會還原 WST-8,從而使 OD 值增加;當有氧化性物質存在時會抑制還原反應進而使 OD 值減小。
Q:做細胞毒性實驗,我的細胞都死了,為什么我加入CCK8試劑后檢測的OD值和對照組OD值差不多?
A:①細胞凋亡或者死亡之后乳酸脫氫酶被釋放到細胞培養液中,可以長期存在,從而導致檢測的OD值偏大。再次說明細胞的活性和OD值并不能完全劃等號。建議客戶在加入CCK8的時候更換新的培養基,確保得到準確的結果。
②加入細胞中的檢測藥物是還原性的,從而導致OD值偏高。建議加入CCK8的時候更換新的培養基。
Q:對照組(培養基+CCK8)的值很高,是為什么呢?
A:可以測一下培養基是否含有氧化還原物質,可能是培養基中的物質引起的。
Q: 細胞不貼壁可以測活性嗎?預培養是必須的嗎?
A: 需要預培養,如果要向保持細胞的最好狀態,建議預培養細胞。如果不做細胞預培養 ,細胞內的脫氫酶可能會不穩定。若不做細胞預培養,需在做標準曲線和檢測時需要統一檢測條件。
Q: CCK-8能否檢測細菌細胞?
A: 可以檢測大腸桿菌,但不能檢測酵母細胞。向100μl E.coli培養液中加入10μl CCK-8溶液,并培養1-4個小時或過夜。
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