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NB-4
Tissue
骨髓
Disease
急性早幼粒細胞白血病
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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1

01General information

Description

NB-4 細胞是一種從一名急性前骨髓球細胞白血病(APL)患者骨髓中建立的人類急性前骨髓球細胞白血病(APL)細胞系,該患者當時正經歷急性前骨髓球細胞白血病的第二次復發。 該細胞系的特徵在於存在 t(15;17) 染色體易位,此易位會產生 PML-RARα 融合基因,這是 APL 的標誌性特徵。 NB-4 細胞系是研究 APL 病理機制,以及維甲酸 (ATRA) 和三氧化二砷 (ATO) 等誘導分化的治療藥物作用機制的關鍵模型。

作為一種前骨髓細胞白血病細胞系,NB-4 細胞展現出 APL 特有的異常分化模式。這種異常現象為探究白血病進展背後的細胞機制以及治療干預的潛在可能性,提供了一個獨特的視角。 NB-4 細胞在接觸某些化療藥物或維甲酸等分化誘導劑時,會發生凋亡(即程式化細胞死亡),這使其成為研究白血病背景下細胞凋亡的無價工具。 NB-4 細胞系還展現出雙系分化潛能,凸顯其能在特定條件下沿多條造血系分化的能力。

總而言之,NB-4 細胞系憑藉其獨特特性及對維甲酸等分化誘導劑的反應性,持續成為研究人員深入探究前骨髓細胞白血病複雜機制,以及更廣泛腫瘤學領域的關鍵資源。

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

02Classification

Organism
Human
Sex
Female
Growth properties
Suspension
Biosafety level
1

03Characteristics

Morphology
圓形細胞
Cell type
B 淋巴細胞
Karyotype
T(15,17) (q22,q11-12) 易位
Doubling time
35 至 40 小時

04Identifiers

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

05Expression and susceptibility

Antigen expression
CD4+、CD14-、CD36-
Reverse transcriptase
否

06Handling and culture

Culture medium
RPMI 1640,含 2.0 mM 穩定谷氨醯胺,含 2.0 g/L NaHCO₃(Cytion 產品編號 820700a)
Incubation atmosphere

37°C,5% CO₂,加濕環境。

Supplements
在培養基中加入 10% 的胎牛血清(FBS)
Subculturing
透過定期添加或更換培養基來維持培養。以 5 × 10⁵ 細胞/毫升的密度啟動培養,並將細胞濃度維持在 3 × 10⁵ 至 1 × 10⁶ 細胞/毫升的範圍內,以達到最佳生長效果。
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

透過基於 PCR 的檢測及基於發光原理的支原體檢測方法,排除支原體污染的可能性。

為確保無細菌、真菌或酵母菌污染,每日均會對細胞培養物進行目視檢查。

Freeze medium
作為冷凍保存培養基,我們使用完全生長培養基(含 FBS)+ 10% DMSO 以確保解凍後的存活率,或使用 CM-1 (Cytion 型號 800100),該培養基含有經優化的滲透保護劑和代謝穩定劑,可提升細胞恢復率並減輕冷凍誘導的壓力。
Storage conditions

若需長期保存,請將試管置於溫度約為 −150 至 −196 °C 的氣相液氮中。僅在轉移至液氮之前,可將試管暫時存放於 −80 °C 環境中,作為短期過渡步驟。

Shipping conditions

冷凍保存的細胞系會以乾冰冷藏,並裝於經驗證的隔熱包裝中,包裝內含有足夠的冷媒,以確保在運輸過程中溫度維持在約 −78 °C。收到貨物後,請立即檢查容器,並盡快將試管轉移至適當的儲存場所。

08Donor

Donor age
23年
Ethnicity
高加索人