Skip to content
LN-18
Tissue
大腦,右顳葉
Disease
膠質母細胞瘤
Synonyms
LN 18, LN18, LN018

Documents

LN-18

Cell line · Product number 305822

LN-18 is a human malignant glioma cell line originally derived from a temporal lobe tumor of an adult male patient diagnosed with glioblastoma multiforme ...

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

01General information

Description

LN-18 是一種人類惡性膠質瘤細胞系,最初源自一名被診斷為多形性膠質母細胞瘤(Kernohan IV 級)的成年男性患者的顳葉腫瘤。該細胞系於體外建立,並已在單層培養中維持超過 115 代。 LN-18 細胞呈現雙極或星狀形態,具有多形性細胞核,其倍增時間約為 72 小時。儘管早期培養物及活檢材料均表達膠質纖維酸蛋白(GFAP),但在後期傳代中未觀察到 GFAP 的合成。 然而,透過超微結構分析已確認該細胞源自膠質細胞。LN-18 細胞表面亦呈現 Ia 樣抗原,且能合成高濃度的纖維連接蛋白,這兩項特徵均與膠質瘤病理及腫瘤-宿主相互作用相關。

就致瘤性而言,LN-18 細胞注射至裸鼠體內後可形成實體腫瘤,所產生的腫瘤具有可移植性,且組織學特徵與原始膠質母細胞瘤相似。核型分析顯示存在三條恆定的標記染色體,為該細胞系提供了細胞遺傳學指紋。 儘管在後期傳代中無法檢測到膠質纖維酸性蛋白(GFAP)或 S-100 蛋白,LN-18 細胞系仍為研究人類膠質瘤生物學的寶貴模型,特別是在細胞表面抗原表達、致瘤性,以及透過纖維連接蛋白產生所產生的細胞外基質相互作用方面。 該細胞系還具有穩定的生長特性,且適合冷凍保存,因此適用於長期實驗研究。

Tissue
大腦,右顳葉
Disease
膠質母細胞瘤
Synonyms
  • LN 18
  • LN18
  • LN018

02Classification

Organism
Human
Sex
Male
Growth properties
Adherent
Biosafety level
1

03Characteristics

Tumourigenic
是的; 是的,會在裸鼠體內形成腫瘤
Doubling time
72 小時

04Identifiers

Citation
LN-18(Cytion 型號 305822)
NCBI TaxID
9606
Cellosaurus
CVCL_0392

05Expression and susceptibility

Antigen expression
HLA A2、A9、B5、BW35、DRW3
Oncogenes
P53+(突變,第 238 個密碼子處發生 TGT (Cys) → TCT (Ser) 突變);PTEN+(野生型);p16-(缺失);p14ARF-(缺失)
Mutational profile
突變:基因缺失,CDKN2A,純合子。 突變,PIK3CB,單一突變,p.Glu1051Lys (c.3151G>A),純合子;TP53,單一突變,p.Cys238Ser (c.713G>C),純合子

06Handling and culture

Culture medium
DMEM,含 4.5 g/L 葡萄糖、4 mM L-谷氨醯胺、3.7 g/L NaHCO₃ 及 1.0 mM 丙酮酸鈉(Cytion 產品編號 820300a)
Incubation atmosphere

37°C,5% CO₂,加濕環境。

Supplements
在培養基中加入 5% 的胎牛血清(FBS)
Dissociation reagent
Accutase
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
61年
Ethnicity
高加索人