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U2OS-CRISPR-SNAPf-Nup358/RanBP2
Tissue
骨质
Disease
骨肉瘤
Metastatic site
原发肿瘤部位(骨)

Documents

U2OS-CRISPR-SNAPf-Nup358/RanBP2

Cell line · Product number 300663

U2OS-CRISPR-SNAPf-Nup358/RanBP2 is a genome-edited human osteosarcoma cell line derived from U2OS cells in which the endogenous RANBP2 (also known as NUP3...

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01General information

Description

U2OS-CRISPR-SNAPf-Nup358/RanBP2是一种基因组编辑的人类骨肉瘤细胞系,源自U2OS细胞。其中内源性RANBP2(亦称NUP358)基因座经CRISPR/Cas9技术修饰,在天然蛋白质编码框内插入SNAPf标签。 Nup358/RanBP2作为大型核孔蛋白,定位于核孔复合体(NPC)的胞质丝状结构,在核质运输、SUMO化修饰及有丝分裂过程中发挥关键作用。内源性标签确保SNAPf-Nup358在生理性启动子调控下表达,既维持天然表达水平,又最大限度减少过表达系统相关的伪影。

SNAPf标签是SNAP标签的快速标记变体,可共价结合苄基鸟嘌呤偶联底物,实现活细胞或固定细胞中Nup358的选择性稳定荧光标记。 在U2OS-CRISPR-SNAPf-Nup358/RanBP2细胞中,融合蛋白以细胞质核孔复合体(NPC)纤维特有的点状分布模式定位于核膜。该构型支持高分辨率荧光成像、超分辨显微镜、脉冲追踪标记及单分子追踪技术,用于研究NPC结构与动态变化。 U2OS细胞扁平形态与大核特征进一步促进了核膜结构的定量成像。

该模型可用于探究Nup358在CRM1/出口蛋白依赖性核输出、Ran GTP酶周期调控及胞质运输平台空间组织中的特异性作用。鉴于Nup358参与有丝分裂纺锤体组装与着丝粒功能,该细胞系同样适用于研究细胞周期依赖性核孔蛋白重分布及有丝分裂期间核孔复合体的解聚/重聚过程。 U2OS-CRISPR-SNAPf-Nup358/RanBP2细胞系为解析人细胞核孔复合体胞质面的结构与功能特性提供了具有生理相关性的研究平台。

Tissue
骨质
Disease
骨肉瘤
Metastatic site
原发肿瘤部位(骨)
Applications
核孔复合体胞质丝生物学;Nup358/RanBP2在CRM1介导的核输出中的作用;Ran GTP酶循环;SUMO通路;有丝分裂纺锤体组装;单粒子追踪;超分辨率显微镜;SNAP脉冲-追踪标记法;核孔复合体胞质面的结构

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This human osteosarcoma cell line (U2OS-CRISPR-SNAPf-Nup358/RanBP2) contains a CRISPR-engineered SNAPf-Nup358/RanBP2 fusion enabling precise labeling of nuclear pore cytoplasmic fibrils. The modification is stably integrated. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
上皮样
Cell type
上皮细胞(骨肉瘤)
Doubling time
约24至36小时

04Identifiers

Citation
U2OS-CRISPR-SNAPf-Nup358/RanBP2(Cytion 目录号 300663)
NCBI TaxID
9606
Depositor
艾伦伯格实验室(EMBL)

05Expression and susceptibility

Protein expression
Nup358/RanBP2, SNAPf-tag

06Handling and culture

Culture medium
McCoys 5a,w:3.0 克/升葡萄糖,w:稳定谷氨酰胺,w:2.0 毫摩尔丙酮酸钠,w:2.2 克/升 NaHCO3(Cytion 文章编号 820200a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% FBS、3.0 g/L 葡萄糖、稳定的谷氨酰胺、2.0 mM 丙酮酸钠、2.2 g/L NaHCO3、1% NEAA
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。
Split ratio
1 至 3
Seeding density
1 至 3 × 10⁴ 个细胞/cm²
Fluid renewal
每周 2 至 3 次
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
15 年
Ethnicity
高加索人