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imWilms1
Tissue
肾脏
Disease
威尔姆斯肿瘤
Synonyms
IM-WT-1

Documents

imWilms1

Cell line · Product number 300412

The Wilms1 cell line was originally derived from a primary Wilms tumor, obtained from a patient diagnosed with large bilateral kidney tumors, a characteri...

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01General information

Description

Wilms1 细胞系最初来源于原发性 Wilms 肿瘤,患者被诊断为双侧肾脏大肿瘤,这是 Wilms 肿瘤(肾母细胞瘤)的特征性表现。该细胞系的 WT1 基因存在同卵无义突变(c.149 C>A,p.S50X),导致产生截短的、无功能的 WT1 蛋白。WT1 是肾脏发育过程中的一个关键基因,它的突变与 Wilms 肿瘤的发病机制密切相关,尤其是在出现基质分化的肿瘤中。Wilms1 细胞的核型稳定,无明显染色体异常,具有间质表型特征,表达波形蛋白,但缺乏细胞角蛋白等上皮标志物。该品系显示出有限但显著的间质分化能力,包括在特定条件下分化成肌肉样细胞的潜力,使其成为研究 WT1 突变分子后果的重要模型。

为了克服原代 Wilms1 细胞寿命有限的问题,我们在原始肿瘤细胞中引入了三重突变的 SV40 大 T 抗原(U19dl89-97tsA58),从而建立了 imWilms1 细胞系,促进其永生化。这种改造使 imWilms1 细胞能够无限增殖,同时保持染色体的稳定性,从而为长期研究提供了一个可靠的模型。永生化的 imWilms1 细胞继续表现出相同的 WT1 突变,并保留了 Wilms1 母系的间质特征。

除了基因和表型特征外,我们还对 imWilms1 细胞系的信号通路活性进行了广泛分析。蛋白质组学研究揭示了多种受体酪氨酸激酶(RTK)的磷酸化和激活,包括表皮生长因子受体(EGFR)、表皮生长因子受体β(PDGFRβ)和 AXL,以及 MAPK 信号通路的下游激活。这些通路在 imWilms1 细胞中的持续激活强调了它们与探索 Wilms 肿瘤靶向治疗策略的相关性。总之,imWilms1 是研究 Wilms 肿瘤发生和发展的分子机制(尤其是由 WT1 突变和异常信号通路驱动的肿瘤)的一个稳健而长期的模型。

Tissue
肾脏
Disease
威尔姆斯肿瘤
Synonyms
  • IM-WT-1

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This imWilms1 human Wilms tumor line contains a triple-mutant SV40 T-antigen cassette enabling conditional immortalization for nephroblastoma research. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
纺锤形
Cell type
Wilms 细胞

04Identifiers

Citation
imWilms1(Cytion 目录编号 300412)
NCBI TaxID
9606
Cellosaurus
CVCL_A5SN

05Expression and susceptibility

Mutational profile
WT1 突变状态:同基因 c. 149 C>A, p.S50x, LOH: 11p11-11pter, CTNNB1 突变状态:异基因 TCT>TTT, p.S45F

06Handling and culture

Culture medium
MSCGM 试剂盒(龙沙公司提供)
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

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。
Fluid renewal
每周 1 至 2 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
10 个月
Ethnicity
高加索人