Skip to content
LN-18
Tissue
大脑,右颞叶
Disease
胶质母细胞瘤
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 是一种人类恶性胶质瘤细胞系,最初来源于一名被诊断为多形性胶质母细胞瘤(克诺汉 IV 级)的成年男性患者的颞叶肿瘤。该细胞系在体外建立,并在单层培养中保持了超过 115 个传代。LN-18 细胞呈双极或星状形态,核多形性,倍增时间约为 72 小时。虽然早期培养物和活检材料表达神经胶质纤维酸性蛋白(GFAP),但在后期培养中未观察到 GFAP 合成。不过,通过超微结构分析证实了这些细胞来源于神经胶质。LN-18 细胞表面还出现了 Ia 样抗原,并能合成大量纤维粘连蛋白,这两个特征都与胶质瘤病理和肿瘤与宿主的相互作用有关。

在致瘤性方面,LN-18 细胞注射到裸鼠体内能形成实体瘤,所形成的肿瘤可移植,组织学上与原始胶质母细胞瘤相似。核型分析显示存在三条一致的标记染色体,为细胞系提供了细胞遗传学指纹。尽管在后来的传代中检测不到 GFAP 或 S-100 蛋白,但 LN-18 细胞系仍然是研究人类胶质瘤生物学的宝贵模型,特别是在细胞表面抗原表达、肿瘤性以及通过产生纤维连接蛋白与细胞外基质相互作用方面。该细胞系还具有稳定的生长特性,适合低温保存,因此适合长期实验使用。

Tissue
大脑,右颞叶
Disease
胶质母细胞瘤
Synonyms
  • LN 18
  • LN18
  • LN018

02Classification

Organism
Human
Sex
Male
Growth properties
Adherent
Biosafety level
1

03Characteristics

Tumourigenic
是;是,在裸鼠体内形成肿瘤
Doubling time
72 小时

04Identifiers

Citation
LN-18(Cytion 目录编号 305822)
NCBI TaxID
9606
Cellosaurus
CVCL_0392

05Expression and susceptibility

Antigen expression
HLA A2、A9、B5、BW35、DRW3
Oncogenes
P53+(突变,密码子238处的TGT(Cys)--> TCT(Ser)突变);PTEN+(野生型);p16-(删除);p14ARF-(删除)
Mutational profile
突变:基因缺失,CDKN2A,同型。突变,PIK3CB,简单,p.Glu1051Lys (c.3151G>A),同型,TP53,简单,p.Cys238Ser (c.713G>C),同型

06Handling and culture

Culture medium
DMEM,w:4.5 克/升葡萄糖,w:4 毫摩尔 L-谷氨酰胺,w:3.7 克/升 NaHCO3,w:1.0 毫摩尔丙酮酸钠(Cytion 编号 820300a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 5% 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

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
61 年
Ethnicity
高加索人