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HEL-299 細胞
Tissue
肺
Synonyms
HEL 299, Hel-299, Hel 299, HEL299

Documents

HEL-299 細胞

Cell line · Product number 300193

HEL-299 is a human lung fibroblast cell line derived from an adult individual. This cell line is particularly noted for its finite capacity to propagate i...

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1

01General information

Description

HEL-299 是一種源自成年個體的人類肺成纖維細胞系。該細胞系最顯著的特徵在於其在體外培養中的增殖能力有限,通常在經過約十代傳代後便會進入衰老狀態。 此特性使 HEL-299 成為研究細胞老化與衰老,以及在受控條件下細胞生長與複製動態的實用模型。

除了在衰老研究中的應用外,HEL-299 亦可用作研究訊號傳導路徑的模型。 具體而言,研究觀察到當這些細胞受到蛋白激酶 C 刺激後,其 M2 膽鹼能受體的表達會被下調。此反應凸顯了該細胞系在藥理學研究,以及探究受體介導的訊號傳導與調控機制方面的實用價值。 激酶活性引發的受體表達變化,有助於深入理解細胞對外部刺激的反應,並可能有助於開發針對各種疾病中類似路徑的治療策略。

Tissue
肺
Synonyms
  • HEL 299
  • Hel-299
  • Hel 299
  • HEL299

02Classification

Organism
Human
Sex
Male
Growth properties
Adherent
Biosafety level
1

03Characteristics

Karyotype
正常男性,二倍體,穩定

04Identifiers

Citation
HEL-299(Cytion 型號 300193)
NCBI TaxID
9606
Cellosaurus
CVCL_2480

05Expression and susceptibility

Receptors expressed
M2 膽鹼能受體
Protein expression
P53 陰性
Isoenzymes
G6PD, A
Virus susceptibility
水疱性口炎(印第安納型),第1型小兒麻痺病毒
Reverse transcriptase
否

06Handling and culture

Culture medium
Ham's F12,含:1.0 mM 穩定型谷氨醯胺、1.0 mM 丙酮酸鈉、1.1 g/L NaHCO₃(Cytion 產品編號 820600a)
Incubation atmosphere

37°C,5% CO₂,加濕環境。

Supplements
在培養基中加入 10% FBS 及 1 ng/mL bFGF
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
1 × 10⁴ 個細胞/cm²
Post-thaw recovery
解凍後,將細胞以 5 × 10⁴ 個細胞/cm² 的密度接種於培養皿中,並讓細胞從冷凍過程中恢復,並附著至少 24 小時。
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
胎兒
Ethnicity
非洲的