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SUM149PT
Tissue
乳房
Disease
乳腺炎症癌
Synonyms
SUM-149PT, SUM 149PT, SUM149-PT, SUM149, SUM-149, SUM 149, 149 PT, 149PT, BrCL12

Documents

SUM149PT

Cell line · Product number 300609

The SUM149PT cell line is derived from a human inflammatory breast carcinoma (IBC), which represents an aggressive subtype of breast cancer. IBC is charac...

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01General information

Description

SUM149PT 细胞系来源于人类炎性乳腺癌(IBC),它是乳腺癌的一种侵袭性亚型。IBC 的特点是进展快、转移早、预后差。SUM149PT 细胞被归类为三阴性乳腺癌(TNBC),缺乏雌激素受体(ER)、孕激素受体(PR)和 HER2 受体的表达,因此对内分泌治疗或 HER2 抑制剂等常见靶向疗法没有反应。相反,这类癌症的治疗通常包括细胞毒性化疗,但随着时间的推移,这些癌症经常会产生抗药性。

值得注意的是,SUM149PT 细胞具有 2288delT BRCA1 突变,导致 BRCA1 功能丧失。这种突变是一种移帧缺失,会导致 BRCA1 蛋白质过早终止,损害 DNA 修复并促进基因组不稳定性,而这正是 BRCA1 突变癌症的特征。BRCA1 的缺失导致 SUM149PT 中观察到的染色体不稳定性增加,表现出许多染色体畸变。除了突变之外,SUM149PT 中还丢失了 BRCA1 基因座,这进一步加剧了对基因组稳定性的影响。

令人惊讶的是,SUM149PT细胞表现出CD44+/CD24-/Low干样癌细胞亚群,该亚群富含癌症干细胞(CSC)特性,如侵袭性增强、肿瘤发生和对化疗的抗性。这些干样细胞还与中心体扩增和细胞周期蛋白 E/Cdk2 活性升高有关。抑制SUM149PT中的Cdk2可选择性地靶向这一CSC亚群,恢复对化疗的一些敏感性,这表明针对Cdk2和传统化疗的联合治疗策略可能会有效治疗化疗耐药的IBC。

Tissue
乳房
Disease
乳腺炎症癌
Synonyms
  • SUM-149PT
  • SUM 149PT
  • SUM149-PT
  • SUM149
  • SUM-149
  • SUM 149
  • 149 PT
  • 149PT
  • BrCL12

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent

03Characteristics

Morphology
上皮细胞

04Identifiers

Citation
SUM149PT (Cytion 目录编号 300609)
NCBI TaxID
9606
Cellosaurus
CVCL_3422

05Expression and susceptibility

Protein expression
P53 阳性

06Handling and culture

Culture medium
Ham's F12,w:1.0 mM 稳定谷氨酰胺,w:1.0 mM 丙酮酸钠,w:1.1 g/L NaHCO3(Cytion 文章编号 820600a)。
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。
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
40 年