SNU-638
Cell line · Product number 305634
The SNU-638 cell line is a human gastric carcinoma model established from the ascitic fluid of a male gastric cancer patient. It exhibits poor differentia...
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01General information
- Description
SNU-638 細胞系是從一名男性胃癌患者的腹水中建立的人類胃癌模型。該細胞系分化程度低且纖維化程度輕微;在體外培養時,其生長模式呈混合型,細胞密度不均,且與培養基質的附著力較弱。 該細胞呈圓形至橢圓形,核質比低,微絨毛發育有限。這些特徵反映了通常與侵襲性胃癌表型相關的特徵,使該細胞系適合用於研究低分化型胃腺癌。
在分子層面上,SNU-638 雖未攜帶 *c-Ki-ras* 基因突變,但會高水平表達 CA 19-9 和組織多肽抗原 (TPA) 等腫瘤相關標記物,且未見甲胎蛋白 (AFP) 表達。 該細胞系亦攜帶 *TP53* 基因突變,此突變常見於胃癌,並在腫瘤發生過程中扮演關鍵角色。 基因組分析顯示,SNU-638 缺乏 MET 基因的擴增或過度表達,因此被歸類為 MET 陰性,且對 MET 訊號傳導路徑的依賴性極低。此分子特徵使 SNU-638 成為針對 MET 進行研究,或評估 MET 抑制劑在胃癌中療效時,極具價值的對照細胞系。
- Tissue
- 胃部
- Disease
- 腺癌
- Metastatic site
- 腹水
- Synonyms
- SNU638
02Classification
- Organism
- Human
- Sex
- Male
- Growth properties
- Adherent
- Biosafety level
- 1
03Characteristics
- Morphology
- 上皮樣
- Cell type
- 上皮性
- Doubling time
- 25 小時
04Identifiers
- Citation
- SNU-638(Cytion 型號 305634)
- NCBI TaxID
- 9606
- Cellosaurus
- CVCL_0102
05Expression and susceptibility
- Mutational profile
- 突變:MET,簡單型,p.Asn375Ser (c.1124A>G),未指定;突變:TP53,簡單型,p.Arg282Trp (c.844C>T),雜合子
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
- Dissociation reagent
- Accutase
- Subculturing
- 移除培養基,加入新鮮的 0.25% 胰蛋白酶與 0.02% EDTA 溶液,將培養瓶置於 37''''C 靜置 3 至 5 分鐘,加入培養基並收集細胞,將培養基轉移至 15 毫升試管中,離心後吸除培養基,用培養基重新懸浮細胞沉澱,並分裝回培養瓶中
- Fluid renewal
- 每週 2 至 3 次
- Thawing and culturing
Confirm that the vial remains deeply frozen upon delivery, as cells are shipped on dry ice to maintain optimal temperatures during transit.
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.
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.
Perform all subsequent steps under sterile conditions in a flow hood, disinfecting the cryovial with 70% ethanol before opening.
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.
Centrifuge the mixture at 300 x g for 3 minutes to separate the cells and carefully discard the supernatant containing residual freezing medium.
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.
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
- 48年
- Ethnicity
- 韓文
09Legal and safety
- Safety precautions
- 若計劃將低溫試管存放在液態氮中以供日後解凍,必須嚴格遵守相關安全措施。 必須穿戴適當的防護手套和防護服,且在將冷凍樣本移入或移出液氮罐時,必須佩戴口罩或安全護目鏡。此舉旨在降低因取出時冷凍試管可能發生爆炸而導致受傷的風險,此類爆炸可能造成尖銳碎片飛濺。
- Warranty
在 Cytion,我們對產品的品質與存活率提供保障。 我們保證,自本公司設施出貨後 60 天內,我們的細胞在培養開始時仍具存活能力。 我們保證所有材料均符合 分析證明書及/或產品說明書中所載的規格。
詳情請參閱我們的 《保固聲明》。
- Material Transfer Agreement required
- Yes

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