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COS-7
Tissue
肾脏
Synonyms
Cos-7, COS7, Cos7, CV-1 in Origin Simian-7

Documents

COS-7

Cell line · Product number 605470

COS-7 cells are a fibroblast-like cell line derived from African green monkey kidney tissue and are a vital resource in research, particularly for their h...

US$395.00excl. tax and shipping
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Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

COS-7 细胞是一种从非洲绿猴肾组织中提取的成纤维细胞样细胞系,是研究领域的重要资源,尤其是其高转染效率使其成为表达重组蛋白的热门选择。COS-7 细胞来源于 CV-1 细胞系,并用猿猴病毒 40(SV40)的突变形式进行了转化,其中包括一个复制原点,允许含有 SV40 复制原点的转染质粒进行外显子复制。

转染试剂(如 Lipofectamine)可促进 COS-7 细胞的转染,其效率与在 HeLa 细胞中观察到的效率相同。传统方法在 COS-7 细胞中的转染效率可高达 80%,这表明它们易于进行基因操作。COS-7 细胞能够容纳大型质粒并对其进行复制,从而获得高产率的所需重组蛋白,这使其成为各种应用(包括基因表达研究、信号转导通路研究以及生产用于生化分析的蛋白质)的宝贵资源。

COS-7 细胞对各种病毒有很强的敏感性,因此是病毒学研究(包括病毒-宿主相互作用研究、病毒生命周期阐明和抗病毒药物测试)的绝佳模型。利用它们对病毒进入和复制的容许性来研究病毒感染机制、致病机理以及病毒入侵者引起的细胞反应。因此,COS-7 细胞是开发用于基因治疗和疫苗研究的病毒载体的重要工具。

COS-7 细胞转染效率高,可用于重组蛋白的表达,因此是研究的基石。COS-7 细胞易于遗传操作,对病毒易感,因此是研究基因表达、信号转导、病毒学和病毒载体开发不可或缺的工具,巩固了其在基础和应用生物科学领域的多功能工具地位。

Tissue
肾脏
Applications
转染宿主。适用于需要表达 SV40 T 抗原的载体转染。
Synonyms
  • Cos-7
  • COS7
  • Cos7
  • CV-1 in Origin Simian-7

02Classification

Organism
African green monkey
Sex
Male
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This African green monkey kidney-derived cell line (COS-7) contains the replication-deficient SV40 mutant pSV6-2 introduced by transfection, supporting immortalization. The construct is integrated into CV-2-derived cells. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
纤维母细胞样
Cell type
成纤维细胞

04Identifiers

Citation
COS-7(Cytion 目录编号 605470)
NCBI TaxID
9534
Cellosaurus
CVCL_0224

05Expression and susceptibility

Virus susceptibility
SV40(溶解生长)、40 摄氏度下的 SV40 tsA209、早期区域缺失的 SV40 突变体
Products
T 抗原

06Handling and culture

Culture medium
DMEM:Ham's F12(1:1),w: 3.1 g/L 葡萄糖,w: 2.5 mM L-谷氨酰胺,w: 15 mM HEPES,w: 0.5 mM 丙酮酸钠,w: 1.2 g/L NaHCO3(Cytion 文章编号 820400a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% FBS
Dissociation reagent
Accutase
Subculturing
去除粘附细胞上的旧培养基,用不含钙和镁的 PBS 冲洗。T25 烧瓶用 3-5 毫升 PBS,T75 烧瓶用 5-10 毫升。然后用 Accutase 完全覆盖细胞,T25 烧瓶用 1-2 毫升,T75 烧瓶用 2.5 毫升。让细胞在室温下孵育 8-10 分钟,使其分离。孵育后,用 10 毫升培养基轻轻混合细胞使其重悬,然后用 300xg 离心 3 分钟。弃去上清液,用新鲜培养基重悬细胞,并将其转移到已装有新鲜培养基的新烧瓶中。
Seeding density
1×10⁴个细胞/cm²将在约4天内形成融合细胞层
Fluid renewal
每周 2 至 3 次
Post-thaw recovery
解冻后,将细胞以5×10⁴个细胞/平方厘米的密度接种于培养皿中,使细胞从冷冻过程中恢复并至少贴壁24小时。
Thawing and culturing
  1. Confirm that the vial remains deeply frozen upon delivery, as cells are shipped on dry ice to maintain optimal temperatures during transit.

  2. Upon receipt, either store the cryovial immediately at temperatures below -150°C to ensure the preservation of cellular integrity, or proceed to step 3 if immediate culturing is required.

  3. For immediate culturing, swiftly thaw the vial by immersing it in a 37°C water bath with clean water and an antimicrobial agent, agitating gently for 40-60 seconds until a small ice clump remains.

  4. Perform all subsequent steps under sterile conditions in a flow hood, disinfecting the cryovial with 70% ethanol before opening.

  5. Carefully open the disinfected vial and transfer the cell suspension into a 15 ml centrifuge tube containing 8 ml of room-temperature culture medium, mixing gently.

  6. Centrifuge the mixture at 300 x g for 3 minutes to separate the cells and carefully discard the supernatant containing residual freezing medium.

  7. Gently resuspend the cell pellet in 10 ml of fresh culture medium. For adherent cells, divide the suspension between two T25 culture flasks; for suspension cultures, transfer all the medium into one T25 flask to promote effective cell interaction and growth.

  8. Adhere to established subculture protocols for continued growth and maintenance of the cell line, ensuring reliable experimental outcomes.

07Quality control and cryopreservation

Sterility

使用基于 PCR 的检测方法和基于发光的支原体检测方法排除支原体污染。

为确保没有细菌、真菌或酵母菌污染,每天都要对细胞培养物进行目视检查。

Freeze medium
我们使用完全生长培养基(包括 FBS)+10% DMSO 或 CM-1(Cytion 商品目录编号 800100)作为冷冻保存培养基,以获得足够的解冻后存活率,CM-1(Cytion 商品目录编号 800100)含有优化的渗透保护剂和代谢稳定剂,可提高恢复能力并减少冷冻引起的应激。
Storage conditions

如需长期保存,可将样品瓶放入气相液氮中,温度约为 -150 至 -196 ℃。在-80 °C下保存只能作为转入液氮前的短暂过渡。

Shipping conditions

冷冻保存的细胞系用干冰装运,并用经过验证的隔热包装和足够的制冷剂在整个运输过程中保持约 -78 °C 的温度。收到货后,应立即检查容器,并立即将小瓶转移到适当的储藏室。

08Donor

Donor age
成人