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CTX TNA2
Tissue
大腦,額葉

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CTX TNA2

Cell line · Product number 305333

CTX TNA2 is a rat astrocyte cell line that was established from primary cultures of cortical astrocytes. It is often used to study central nervous system ...

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01General information

Description

CTX TNA2 是一種由皮質星形膠質細胞原代培養所建立的大鼠星形膠質細胞系。該細胞系常被用於研究中樞神經系統(CNS)的功能,特別是與膠質細胞生物學、神經毒性及神經保護相關的研究。 星形膠質細胞在維持中樞神經系統的穩態、為神經元提供結構與代謝支持,以及調控對損傷和氧化應激的反應方面,扮演著關鍵角色。

在多項研究中,CTX TNA2 細胞已被用來建立神經毒性模型,特別是涉及由谷氨酸等物質誘導的興奮性毒性。 舉例來說,CTX TNA2 細胞暴露於谷氨酸後,會透過涉及活性氧(ROS)及糖原合成酶激酶-3β(GSK-3β)途徑的機制,觸發細胞凋亡與自噬。 這些途徑是細胞對抗氧化壓力與線粒體功能障礙的反應核心,特別是在創傷性腦損傷或其他神經退化性疾病發生後。此外,研究顯示白藜蘆醇和大麻二酚(CBD)等神經保護劑,能減少這些星形膠質細胞中的活性氧(ROS)生成,並抑制谷氨酸誘導的自噬與凋亡。

CTX TNA2 細胞系已被證實為一個極具價值的體外模型,不僅可用於研究星形膠質細胞的基本功能,亦能評估抗氧化劑及神經保護化合物在中樞神經系統損傷與疾病條件下的治療潛力。

Tissue
大腦,額葉

02Classification

Organism
Rat
Growth properties
Adherent
Biosafety level
2

03Characteristics

Morphology
成纖維細胞
Cell type
星形膠質細胞

04Identifiers

Citation
CTX TNA2(Cytion 型號 305333)
NCBI TaxID
10116
Cellosaurus
CVCL_3670

05Expression and susceptibility

Viruses
轉化體:猿病毒 40 型(SV40)

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% 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。
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 50% 基礎培養基 + 40% 胎牛血清 (FBS) + 10% 二甲基亞砜 (DMSO),或 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,可提高細胞存活率並減輕冷凍引起的應激。
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
斯普拉格-道利
Donor age
1 天