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ND7/23
Tissue
大腦
Synonyms
ND7-23

Documents

ND7/23

Cell line · Product number 305520

The ND7/23 cell line is an immortalized hybrid derived from the fusion of neonatal rat dorsal root ganglion (DRG) neurons with a mouse neuroblastoma (N18T...

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Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

ND7/23 細胞系是一種永生化雜交細胞系,源自新生大鼠背根神經節(DRG)神經元與小鼠神經母細胞瘤(N18TG2)的融合。 該細胞系保留了感覺神經元的眾多特徵,常被用於研究痛覺傳導、神經再生及神經突生長等神經生物學過程。 ND7/23 細胞是理解感覺神經元功能之細胞與分子機制(尤其是涉及神經損傷與修復的途徑)的多功能模型。它們表達多種與感覺及痛覺受體相關的受體、離子通道和酶,使其適合用於神經科學的各種應用。

ND7/23 細胞廣泛應用於涉及感覺神經元分化的研究,通常由神經生長因子(NGF)或二丁基環磷酸腺苷(db-cAMP)等因子誘導分化。 分化後的細胞會長出神經突,表達神經絲蛋白,並展現與痛覺傳導相關分子(如瞬態受體電位(TRP)通道,包括 TRPC4)的增強表達。 這些特徵使 ND7/23 細胞能作為研究神經營養因子作用及篩選潛在神經治療藥物的模型。該細胞系亦有助於進行高通量檢測,以分析感覺神經元中的鈣離子動態、電生理特性及藥物反應。

在神經損傷研究中,ND7/23 細胞為 TRPC 通道(尤其是 TRPC4)在軸突再生中的作用提供了新見解。針對 TRPC4 進行的短髮夾 RNA(shRNA)敲低實驗顯示神經突生長受抑制,凸顯了該通道在神經元修復機制中的重要性。 此外,ND7/23 細胞還提供了一個易於操作且可重複的系統,用於探究訊號傳導路徑以及細胞對外部刺激(包括神經毒素和止痛藥)的反應。

Tissue
大腦
Synonyms
  • ND7-23

02Classification

Growth properties
Adherent
Biosafety level
1

03Characteristics

Cell type
小鼠神經母細胞瘤細胞(N18 tg 2)× 大鼠背根神經節神經元細胞

04Identifiers

Citation
ND7/23(Cytion 型號 305520)
NCBI TaxID
10090, 10116
Cellosaurus
CVCL_4259

05Handling 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% 的胎牛血清(FBS)
Seeding density
1 - 3 × 10⁴ 個細胞/cm²
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.

06Quality 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。