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RS4:11
Tissue
骨髓
Disease
成人 B 型急性淋巴细胞白血病
Synonyms
RS4-11, RS4, 11, RS 4, 11, RS(4, 11), RS411

Documents

RS4:11

Cell line · Product number 305360

The RS4:11 cell line is derived from a 32-year-old female patient with relapsed acute lymphoblastic leukemia (ALL) characterized by the t(4:11)(q21:q23) c...

US$395.00excl. tax and shipping
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Lot
Recommended (freshest lot)
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1

01General information

Description

RS4:11细胞系来源于一名32岁的女性急性淋巴细胞白血病(ALL)复发患者,其特征为t(4:11)(q21:q23)染色体易位。这种易位导致**KMT2A-AFF1(原 MLL-AF4)**融合基因的形成,而这正是这种白血病亚型的特征。RS4:11 细胞表现出双表型特征,同时表达 B 细胞和单核细胞标记,反映了与这种基因重排相关的混系特征。该细胞系被广泛用作了解 KMT2A 重排白血病生物学特性的模型,KMT2A 重排白血病与侵袭性疾病和预后不良有关。

RS4:11 细胞显示出前 B 淋巴母细胞的典型特征,包括 CD19、HLA-DR 和末端脱氧核苷酸转移酶(TdT)等标记物的表达,以及重排的免疫球蛋白重链和轻链基因。有趣的是,在使用分化诱导剂(如植物醇酯)处理后,RS4:11 细胞会出现类似单核细胞的表型,这突显了它们的品系可塑性。这一特性使该细胞系在研究白血病分化和血统承诺的分子驱动因素方面具有特别的价值。

在基因上,t(4:11)易位破坏了11q23**上的**KMT2A基因,使其与4q21上的**AFF1(AF4)**融合,导致嵌合蛋白异常调控基因表达,包括参与造血发育的Hox基因。RS4:11细胞还被用于研究继发性突变,如**FLT3**中的突变,这些突变会导致白血病的发生和耐药性。该细胞系是测试靶向疗法(包括 KMT2A-AFF1 相互作用抑制剂和针对相关信号通路的药物)的可靠临床前模型。

Tissue
骨髓
Disease
成人 B 型急性淋巴细胞白血病
Synonyms
  • RS4-11
  • RS4
  • 11
  • RS 4
  • 11
  • RS(4
  • 11)
  • RS411

02Classification

Organism
Human
Sex
Female
Growth properties
Suspension
Biosafety level
1

03Characteristics

Morphology
淋巴母细胞样
MSI status
不稳定,报告 MSI 偏高

04Identifiers

Citation
RS4:11(Cytion 目录编号 305360)
NCBI TaxID
9606
Cellosaurus
CVCL_0093

05Handling and culture

Culture medium
RPMI 1640,含 2.1 mM 稳定型谷氨酰胺,含 2.0 g/L NaHCO₃ 的培养基(Cytion 820700a)
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% 热灭活 FBS
Seeding density
种子培养物浓度为3-5×10⁵个细胞/毫升
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

Donor age
32 年
Ethnicity
高加索人