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4T1-Luc
Tissue
乳腺
Disease
恶性肿瘤

Documents

4T1-Luc

Cell line · Product number 305663

4T1-Luc is a genetically engineered variant of the murine 4T1 mammary carcinoma cell line, stably transduced to express a luciferase reporter gene. The pa...

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01General information

Description

4T1-Luc 是小鼠 4T1 乳腺癌细胞系的基因工程变体,经稳定转导可表达荧光素酶报告基因。亲本 4T1 细胞系源自小鼠体内自发形成的乳腺肿瘤,被广泛用作 IV 期三阴性乳腺癌的模型。 该细胞系在侵袭性生长、分化不良及高转移潜能方面与人类疾病高度相似,能够从原发肿瘤部位自发扩散至肺、肝、骨和脑等远端器官。表达荧光素酶的衍生细胞系在保留这些核心生物学特性的同时,还能够实现对肿瘤进展的无创追踪。

荧光素酶基因的引入使得在给药荧光素底物后能够进行高灵敏度的生物发光成像(BLI),从而为活体动物提供肿瘤负荷的定量和纵向读数。这种改造使得无需侵入性操作即可实时监测原发肿瘤的生长、转移扩散以及治疗反应。 荧光素酶信号与存活细胞数量呈正相关,这使得 4T1-Luciferase 特别适用于同基因免疫功能正常小鼠模型中的转移、肿瘤动力学及药物疗效的体内研究。稳定的基因整合确保了在不同传代过程中报告基因表达的一致性,尽管信号强度可能因克隆选择和实验条件而有所差异。

4T1-Luc 保留了亲本细胞系的免疫学和转移特性,包括对多种化疗药物的耐药性,以及与宿主免疫系统相互作用并对其进行调节的能力。这使其在肿瘤免疫学、免疫检查点疗法及联合治疗策略的研究中具有特别重要的价值。 生物发光报告基因的引入显著提高了实验通量和灵敏度,支持其在乳腺癌研究中的临床前药物开发、转移模型构建以及治疗干预措施的实时评估等应用。

Tissue
乳腺
Disease
恶性肿瘤

02Classification

Organism
Mouse
Sex
Female
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This cell line contains a stably integrated firefly luciferase reporter cassette (Luc2, codon-optimized) introduced via replication-incompetent lentiviral transduction. The resulting polyclonal cell population was maintained under puromycin selection (1–5 µg/mL). S1 containment is required. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
上皮样
Tumourigenic
是的,在 BALB/c 小鼠中。

04Identifiers

Citation
4T1-Luc(Cytion 产品编号 305663)
NCBI TaxID
10090
Cellosaurus
CVCL_J239

05Expression and susceptibility

Antigen expression
Luc2(萤火虫,密码子优化版)

06Handling 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。
Seeding density
1至3×10⁴个细胞/平方厘米
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 200 x g for 5 minutes, carefully discard the supernatant containing freezing medium.

  7. Follow the procedure described under Post-Thaw Recovery

07Quality control and cryopreservation

Freeze medium
作为冷冻保存培养基,我们使用完全生长培养基+10% DMSO,以获得足够的解冻后存活率。
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
BALB/cfC3H