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SRA01-04
Tissue
眼睛、眼晶體、上皮
Synonyms
SRA 01-04, HLEC-SRA 01-04, HLE-SRA-01-04, SRA01-04 (HLE), SRA 01/04, HLEC-SRA 01/04, HLE-SRA-01/04, SRA01/04 (HLE)

Documents

SRA01-04

Cell line · Product number 305436

The SRA01/04 cell line is an immortalized human lens epithelial cell line developed to overcome the limitations associated with primary cultures of human ...

US$540.00excl. tax and shipping
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Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

SRA01/04 細胞系是一種永生化的人類晶狀體上皮細胞系,其開發旨在克服人類晶狀體上皮(HLE)細胞原代培養所面臨的限制。這些限制包括細胞增殖能力低,以及難以從捐贈者的晶狀體中獲得足量的細胞。 SRA01/04 源自接受早產兒視網膜病變手術的嬰兒所取得的原代 HLE 細胞。 該細胞系是透過轉染攜帶由 RSV 啟動子控制之 SV40 大 T 抗原基因的質體,而達成不朽化。此方法避免了使用活病毒,並能篩選出具有一致特徵的均一克隆。

SRA01/04 細胞在超過 130 代傳代過程中展現出穩定的增殖能力,每代傳代的細胞群倍增率約為 3.5。形態學上,它們維持著具有上皮特徵的單層結構。染色體分析顯示其具有次四倍體核型,與不朽化狀態相符。 同酶型表型證實了其人類來源。重要的是,該細胞系保留了晶狀體特異性的分子特徵,包括αA-和βB-晶狀體蛋白以及己糖還原酶的表達,儘管其蛋白質水平低於原代人晶狀體上皮(HLE)培養物。 透過逆轉錄聚合酶鏈反應(RT-PCR)亦檢測到這兩種晶狀體蛋白的mRNA,且定序結果證實其與已發表的人類序列具100%同源性。這使得SRA01/04成為首個經證實同時表達αA型與βB型晶狀體蛋白的人類晶狀體細胞系。

除了晶狀體蛋白的表達外,SRA01/04 還表達參與多元醇代謝途徑的酶——己糖還原酶,該酶與白內障的形成有關。 雖然最佳生長需要 20% 的胎牛血清,但若預先附著於培養皿上,這些細胞即使在降低血清濃度或甚至無血清的條件下,仍能存活並增殖。 這種適應性,加上其穩定的晶狀體特異性表型,使 SRA01/04 成為研究晶狀體生理學、晶狀體上皮中的基因調控,以及白內障形成背後機制的重要模型。

Tissue
眼睛、眼晶體、上皮
Synonyms
  • SRA 01-04
  • HLEC-SRA 01-04
  • HLE-SRA-01-04
  • SRA01-04 (HLE)
  • SRA 01/04
  • HLEC-SRA 01/04
  • HLE-SRA-01/04
  • SRA01/04 (HLE)

02Classification

Organism
Human
Sex
Male
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This SRA01-04 human lens epithelial line contains an SV40 large T-antigen construct enabling ocular lens research. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
上皮樣
Cell type
眼球晶狀體

04Identifiers

Citation
SRA01-04(Cytion 型號 305436)
NCBI TaxID
9606
Cellosaurus
CVCL_7157

05Expression and susceptibility

Protein expression
基因整合:方法=轉染;基因=UniProtKB;P03070;SV40 大 T 抗原
Isoenzymes
LD、NP

06Handling and culture

Culture medium
低葡萄糖 DMEM
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
Seeding density
2–4×10⁴/cm²
Fluid renewal
每週 2 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

Donor age
3個月