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SKW-3
Tissue
造血
Disease
T 細胞白血病(CLL)
Synonyms
SKW3

Documents

SKW-3

Cell line · Product number 300343

The SKW-3 cell line, originally believed to be derived from the peripheral blood of a 61-year-old male diagnosed with chronic lymphocytic leukemia (CLL), ...

US$395.00excl. tax and shipping
In stock
Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

SKW-3 細胞系最初被認為源自一名經診斷患有慢性淋巴細胞白血病(CLL)的 61 歲男性患者的外周血,在癌症研究領域,特別是 B 細胞白血病的研究中,具有重要的研究價值。 隨著時間推移,利用短串聯重複序列(STR)分析進行的關鍵性重新評估,揭示了一個重要問題——SKW-3 細胞並非源自該 CLL 患者的純系細胞,而是受到污染,現已被確認為 KE-37 細胞系的衍生物。 這項發現對過去的研究及未來研究都具有深遠的影響,強調了進行嚴格細胞系認證以確保實驗準確性的必要性。

KE-37 作為 SKW-3 細胞的真正來源,是一株源自急性淋巴細胞白血病(ALL)患者的 B 細胞系。由於污染導致來源從 CLL 轉變為 ALL,這徹底改變了 SKW-3 細胞系的生物學背景及其應用價值。 對研究人員而言,這意味著過去在使用 SKW-3 時,任何歸因於 CLL 特異性機制的發現或數據,都必須經過嚴格評估,並可能需要修正。由於 SKW-3 已被重新歸類為 KE-37 的衍生物,因此 SKW-3 細胞的應用方向必須從 CLL 轉向與 ALL 及其潛在機制更相關的研究。

Tissue
造血
Disease
T 細胞白血病(CLL)
Synonyms
  • SKW3

02Classification

Organism
Human
Sex
Male
Growth properties
Suspension
Biosafety level
1

03Characteristics

Morphology
圓形細胞
Cell type
T 淋巴細胞
Doubling time
30 小時

04Identifiers

Citation
SKW-3(Cytion 型號 300343)
NCBI TaxID
9606
Cellosaurus
CVCL_2197

05Expression and susceptibility

Antigen expression
CD2+、CD3-、CD4+、CD8、Thy-1樣抗原
Products
LECT2(趨化蛋白)

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% 經熱滅活的胎牛血清
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。
Post-thaw recovery
1 × 10⁵/毫升
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
27年
Ethnicity
高加索人