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NB-4
Tissue
骨髓
Disease
急性早幼粒细胞白血病
Synonyms
NB4, NB.4

Documents

NB-4

Cell line · Product number 300299

NB-4 cells are a human acute promyelocytic leukemia (APL) cell line established from the bone marrow of a patient experiencing the second relapse of acute...

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  • CoA
1

01General information

Description

NB-4 细胞是一种人类急性早幼粒细胞白血病(APL)细胞系,它是从一名急性早幼粒细胞白血病二次复发患者的骨髓中提取的。这种细胞系的特点是存在 t(15;17) 染色体易位,导致 PML-RARα 融合基因,这是 APL 的标志。NB4 细胞系是研究 APL 发病机制以及视黄酸(ATRA)和三氧化二砷(ATO)等诱导分化的治疗药物作用机制的重要模型。

作为一种早幼粒细胞白血病细胞系,NB-4 细胞表现出 APL 所特有的异常分化模式。这种反常性为了解白血病进展的细胞机制和治疗干预的潜力提供了一个独特的窗口。NB-4 细胞在接触某些化疗药物或视黄酸等分化诱导剂后会发生细胞凋亡或程序性细胞死亡,这使它们成为研究白血病细胞凋亡的宝贵工具。NB-4 细胞系还具有双系潜能,突显了其在特定条件下沿着多个造血系分化的能力。

总之,NB-4 细胞系具有独特的特性和对维甲酸等分化诱导剂的反应性,对于研究早幼粒细胞白血病和更广泛的肿瘤学领域的研究人员来说,它仍然是一个举足轻重的资源。

Tissue
骨髓
Disease
急性早幼粒细胞白血病
Synonyms
  • NB4
  • NB.4

02Classification

Organism
Human
Sex
Female
Growth properties
Suspension
Biosafety level
1

03Characteristics

Morphology
圆形电池
Cell type
B 淋巴细胞
Karyotype
T(15,17) (q22,q11-12) 易位
Doubling time
35 至 40 小时

04Identifiers

Citation
NB-4(Cytion 目录号 300299)
NCBI TaxID
9606
Cellosaurus
CVCL_0005

05Expression and susceptibility

Antigen expression
cd4+、cd14-、cd36-
Reverse transcriptase
阴性

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
Subculturing
通过定期添加或更换培养基来维持细胞培养。初始培养时细胞密度应为5×10⁵个细胞/毫升,并保持细胞浓度在3×10⁵至1×10⁶个细胞/毫升范围内以获得最佳生长效果。
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
23 年
Ethnicity
高加索人