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NCI-H1975
Tissue
肺部
Disease
肺腺癌
Synonyms
NCI-H1975, H-1975, NCIH1975

Documents

NCI-H1975

Cell line · Product number 305067

The NCI-H1975 cell line is a well-established model derived from human non-small cell lung carcinoma (NSCLC), specifically adenocarcinoma. This cell line ...

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01General information

Description

NCI-H1975 细胞系是一种从人类非小细胞肺癌(NSCLC),特别是腺癌中提取的成熟模型。该细胞系因其表皮生长因子受体(EGFR)基因的双重突变而显得尤为重要。它在第 21 号外显子中携带 L858R 激活突变,在第 20 号外显子中携带 T790M 突变,从而对吉非替尼和厄洛替尼等第一代酪氨酸激酶抑制剂(TKIs)产生耐药性。这些遗传特征使NCI-H1975成为研究耐药机制和测试下一代表皮生长因子受体抑制剂的重要工具。

T790M 突变改变了表皮生长因子受体的 ATP 结合袋,降低了早期表皮生长因子受体抑制剂的疗效,同时保持了受体的信号活性。这一特性推动了对奥希替尼等第三代抑制剂的研究,奥希替尼可选择性地靶向 T790M 突变的表皮生长因子受体,同时保留野生型表皮生长因子受体,减少脱靶效应。利用NCI-H1975进行的研究有助于了解这些突变对表皮生长因子受体介导的信号通路的结构和功能影响,包括对PI3K/AKT和RAS/RAF/MEK/ERK通路的下游影响,这些通路在肿瘤细胞增殖和存活中起着关键作用。

除了在耐药性研究中发挥作用外,NCI-H1975 还被用于旨在通过靶向多种途径克服耐药性的联合疗法的临床前评估。NCI-H1975的遗传和分子特征描述良好,包括拷贝数变异和突变图谱的详细数据,这巩固了它作为研究NSCLC生物学和治疗开发的重要模型的地位。

Tissue
肺部
Disease
肺腺癌
Synonyms
  • NCI-H1975
  • H-1975
  • NCIH1975

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮细胞

04Identifiers

Citation
NCI-H1975(Cytion 目录号 305067)
NCBI TaxID
9606
Cellosaurus
CVCL_1511

05Handling and culture

Culture medium
RPMI 1640,w:2.0 mM 稳定谷氨酰胺,w:2.0 g/L NaHCO3(Cytion 文章编号 820700a)。
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。
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.

06Quality 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。

07Donor

Ethnicity
欧洲