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EO771
Tissue
乳腺
Disease
惡性腫瘤
Synonyms
Eo771, E0771, EO 771

Documents

EO771

Cell line · Product number 305352

EO771 is a murine mammary cancer cell line derived from spontaneous tumors in C57BL/6 mice. This line serves as an important preclinical model for studyin...

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

01General information

Description

EO771 是一種源自 C57BL/6 小鼠自發性腫瘤的小鼠乳腺癌細胞系。 由於該細胞系與同基因型 C57BL/6 小鼠模型相容,因此成為在免疫功能正常環境下研究乳癌的重要臨床前模型。這些模型有助於探索腫瘤細胞與免疫系統之間的相互作用,並為腫瘤生長與轉移提供深入見解。

EO771 細胞被歸類為管腔 B 亞型,其特徵為雌激素受體 α(ERα)陰性、雌激素受體 β(ERβ)陽性、黃體酮受體陽性,以及 ErbB2(HER2)陽性。 此分類與人類體內發現的管腔 B 型腫瘤相符,相較於管腔 A 型,該類腫瘤的預後通常較差。 EO771 作為管腔 B 亞型,使其成為研究荷爾蒙治療反應的理想模型;研究顯示,該細胞系對他莫昔芬及其他選擇性雌激素受體調節劑等抗雌激素治療具有敏感性。

除了其表型特徵外,EO771 已被證實對研究腫瘤轉移和免疫反應調控具有實用價值。其轉移行為與人類乳癌相似,常轉移至肺部及其他部位,例如腹膜和腦部。 這些特性使 EO771 成為評估新型抗癌治療療效及理解腫瘤與免疫系統動態的寶貴模型。

Tissue
乳腺
Disease
惡性腫瘤
Synonyms
  • Eo771
  • E0771
  • EO 771

02Classification

Organism
Mouse
Sex
Female
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮樣

04Identifiers

Citation
EO771(Cytion 型號 305352)
NCBI TaxID
10090
Cellosaurus
CVCL_GR23

05Expression and susceptibility

Receptors expressed
ERα-、ERβ+、PR+ 及 ErbB2+

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 10% FBS 及 20 mM HEPES
Dissociation reagent
Accutase
Subculturing
從貼壁細胞中移除舊培養基,並用不含鈣和鎂的PBS洗滌細胞。T25培養瓶使用3-5毫升PBS,T75培養瓶則使用5-10毫升。 接著,用 Accutase 完全覆蓋細胞,T25 培養瓶使用 1–2 毫升,T75 培養瓶則使用 2.5 毫升。將細胞於室溫下孵育 8–10 分鐘,使其脫附。 孵育後,將細胞與 10 毫升培養基輕柔混合以使其重新懸浮,然後以 300xg 離心 3 分鐘。棄去上清液,將細胞重新懸浮於新鮮培養基中,並轉移至已預先加入新鮮培養基的新培養瓶中。
Seeding density
將培養物維持在 5 至 10 × 10⁴ 個細胞/cm² 之間
Fluid renewal
每週 2 至 3 次
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

Breed / subspecies
C57BL/6