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EO771
Tissue
乳腺
Disease
恶性肿瘤
Synonyms
Eo771, E0771, EO 771

Documents

EO771

Cell line · Product number 305352

EO771 is a murine mammary cancer cell line derived from spontaneous tumors in C57BL/6 mice. This line serves as an important preclinical model for studyin...

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

01General information

Description

EO771 是一种源自 C57BL/6 小鼠自发性肿瘤的小鼠乳腺癌细胞系。该细胞系与 C57BL/6 合成小鼠模型兼容,是在免疫功能正常的情况下研究乳腺癌的重要临床前模型。这些模型有助于探索肿瘤细胞与免疫系统之间的相互作用,从而深入了解肿瘤的生长和转移。

EO771细胞被归为管腔B亚型,其特征是雌激素受体α(ERα)阴性、雌激素受体β(ERβ)阳性、孕酮受体阳性和ErbB2(HER2)阳性。这种分类与人类发现的管腔B型肿瘤一致,与管腔A型肿瘤相比,管腔B型肿瘤的预后通常较差。EO771 的管腔 B 状态使其适用于研究激素疗法的反应;研究表明该细胞系对他莫昔芬和其他选择性雌激素受体调节剂等抗雌激素疗法很敏感。

除了表型特征外,EO771 还被证明有助于研究肿瘤转移和免疫反应调节。它的转移行为与人类乳腺癌相似,经常转移到肺部以及腹膜和大脑等其他部位。这些特性使 EO771 成为评估新型抗癌疗法疗效和了解肿瘤免疫系统动态的宝贵模型。

Tissue
乳腺
Disease
恶性肿瘤
Synonyms
  • Eo771
  • E0771
  • EO 771

02Classification

Organism
Mouse
Sex
Female
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮样

04Identifiers

Citation
EO771(Cytion 目录编号 305352)
NCBI TaxID
10090
Cellosaurus
CVCL_GR23

05Expression and susceptibility

Receptors expressed
ERalpha-、ERbeta+、PR+ 和 ErbB2+

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% FBS、20 mM HEPES
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
保持细胞密度在5-10×10⁴个细胞/平方厘米之间
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

Breed / subspecies
C57BL/6