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JIMT-1
Tissue
乳房
Disease
乳腺导管癌
Metastatic site
胸腔积液
Synonyms
JIMT1, JIMT

Documents

JIMT-1

Cell line · Product number 305433

The JIMT-1 cell line is derived from a HER2-positive human breast carcinoma and is known for its resistance to trastuzumab, a commonly used HER2-targeted ...

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

01General information

Description

JIMT-1 细胞系来源于 HER2 阳性的人类乳腺癌,它对常用的 HER2 靶向疗法曲妥珠单抗具有抗药性。这使得 JIMT-1 成为研究抗 HER2 治疗耐药机制和开发新治疗策略的宝贵模型。与许多其他 HER2 阳性乳腺癌细胞系不同的是,JIMT-1 模拟了临床病例,即观察到对 HER2 靶向疗法的初步反应,但随后出现耐药性。这一特点使它在探索旨在克服曲妥珠单抗耐药性的新药和联合疗法的疗效方面发挥了重要作用。

JIMT-1细胞还被用于研究HER2与其他信号通路(如涉及表皮生长因子受体(EGFR)的信号通路)之间的相互作用。这些通路之间的相互作用导致细胞对传统疗法产生抗药性。研究表明,JIMT-1细胞对不同的酪氨酸激酶抑制剂(TKIs)和抗体药物共轭物(ADCs)的反应各不相同。例如,虽然该细胞系对曲妥珠单抗-埃坦辛(T-DM1)表现出抗药性,对曲妥珠单抗-德鲁司坦(T-DXd)等新药也仅表现出部分敏感性,但研究表明,迪西他单抗维多汀(DV)等替代 ADCs 可提高疗效。

体外研究凸显了 JIMT-1 的多功能性,它不仅能筛选针对 HER2 的药物,还能筛选针对其他分子通路的药物。这些研究为评估 ADC 与 TKIs 或新型靶向疗法联合治疗的协同效应提供了重要数据。该细胞系在各种耐药情况下的表现突显了它在临床前药物开发中的重要性,特别是对于具有获得性或内在耐药性的 HER2 阳性乳腺癌。

Tissue
乳房
Disease
乳腺导管癌
Metastatic site
胸腔积液
Synonyms
  • JIMT1
  • JIMT

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮样

04Identifiers

Citation
JIMT-1(Cytion 目录编号 305433)
NCBI TaxID
9606
Cellosaurus
CVCL_2077

05Expression and susceptibility

Oncogenes
HER-2(对 HER-2 抑制药物不敏感,如曲妥珠单抗)、ER-、PR-、AR-
Mutational profile
突变:PIK3CA,p.Cys420Arg (c.1258T>C),杂合;突变:TP53,p.Arg248Trp (c.742C>T),同卵双生

06Handling and culture

Culture medium
DMEM,w:4.5 克/升葡萄糖,w:4 毫摩尔 L-谷氨酰胺,w:3.7 克/升 NaHCO3,w:1.0 毫摩尔丙酮酸钠(Cytion 编号 820300a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% 热灭活 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/平方厘米
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
62 岁
Ethnicity
高加索人