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HT55
Tissue
直腸
Disease
腺癌
Synonyms
HT55

Documents

HT55

Cell line · Product number 305018

HT55 is a human rectal adenocarcinoma cell line established from the primary rectal tumor of a 54-year-old Caucasian female. The line grows as an adherent...

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  • CoA
1

01General information

Description

HT55 是一種從一名 54 歲白人女性的原發性直腸腫瘤中建立的人類直腸腺癌細胞系。該細胞系以附著單層形式生長,呈現上皮樣形態。 HT55 攜帶 APC(結腸腺瘤性息肉症)腫瘤抑制基因中的多種雜合性及純合性功能喪失突變,包括 p.Gln1131Ter、p.Gln1303Ter、p.Arg1463Ser、 p.Asn581Tyr 及 p.Lys241Ter(均為雜合突變),以及一個純合的 p.Arg213Leu 置換突變。 此突變特徵使 HT55 成為 APC 驅動型大腸直腸癌發病機制的生物學相關模型,反映出驅動多數人類大腸直腸癌的經典 WNT 路徑失調。

HT55 在大腸直腸癌研究中被廣泛應用,用於探討 WNT/β-catenin 訊號傳導、APC 腫瘤抑制基因功能、藥物敏感性與抗藥性,以及針對 WNT 路徑組分的標靶藥物之臨床前評估。 該細胞系適用於體外藥理學檢測及免疫缺陷小鼠模型中的異種移植研究,為機制性與轉譯性大腸直腸癌研究提供了一個附著性強且易於操作的體外平台。 由於存在多種 APC 截短突變,HT55 代表了通常由 APC 功能喪失所驅動的微衛星穩定、染色體不穩定型大腸直腸癌亞型。

Tissue
直腸
Disease
腺癌
Applications
大腸直腸癌研究;WNT/APC 路徑研究;藥物敏感性與抗藥性檢測;腫瘤學前臨床研究;異種移植模型;標靶治療評估
Synonyms
  • HT55

02Classification

Organism
Human
Sex
Female
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮樣
Cell type
上皮細胞
Doubling time
28 小時

04Identifiers

Citation
HT55(Cytion 型號 305018)
NCBI TaxID
9606
Cellosaurus
CVCL_1294

05Expression and susceptibility

Mutational profile
突變:p.Gln1131Ter,雜合子;突變:p.Gln1303Ter,雜合子;突變:p.Arg1463Ser,雜合子;突變:p.Asn581Tyr,雜合子; 突變:p.Lys241Ter,雜合子;突變:p.Arg213Leu,純合子

06Handling and culture

Culture medium
EMEM(MEM Eagle),含 2 mM L-谷氨醯胺,含 2.2 g/L NaHCO₃,含 EBSS(Cytion 產品編號 820100a)
Incubation atmosphere

37°C,5% CO₂,加濕環境。

Supplements
在培養基中加入 10% 的胎牛血清(FBS)
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,使其脫落。 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 300×g 離心 3 分鐘。棄去上清液,將細胞重新懸浮於新鮮培養基中,並轉移至已裝有新鮮培養基的新培養瓶中。
Split ratio
1 至 5
Seeding density
1 至 3 × 10⁴ 個細胞/cm²
Fluid renewal
每 2 至 3 天
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

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
54年
Ethnicity
高加索人