Skip to content
PT-67
Tissue
胚胎
Synonyms
RetroPack PT67, PT-67

Documents

PT-67

Cell line · Product number 305483

The PT-67 cell line is a murine retrovirus packaging cell line commonly used for the production of retroviral vectors for gene delivery purposes. Derived ...

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

01General information

Description

PT-67 細胞系是一種常用於生產基因遞送用逆轉錄病毒載體的小鼠逆轉錄病毒包裝細胞系。PT-67 源自 NIH 3T3 細胞,可表達逆轉錄病毒顆粒組裝所需的病毒結構蛋白及包膜蛋白。 值得注意的是,該細胞系已針對生產以 10A1 小鼠白血病病毒(MLV)包膜蛋白偽型化的載體進行優化,這使得載體能夠透過多種磷酸鹽轉運蛋白受體進入細胞,包括長臂猿白血病病毒受體(Glvr-1 或 Pit-1)以及廣嗜性受體 Ram-1 (Pit-2)進入細胞。

PT-67 包裝細胞的獨特之處在於 10A1 包膜蛋白能夠同時利用 Glvr-1 和 Ram-1 受體。 這種雙重受體特異性顯著擴大了由 PT-67 產生的逆轉錄病毒載體的宿主範圍,使其在轉導跨物種的各種細胞類型(包括人類、小鼠和大鼠細胞)時具有優勢。 例如,10A1 偽型逆轉錄病毒載體可藉由利用這些受體,有效轉導小鼠 NIH 3T3 細胞及人類成纖維細胞。 然而,受體的使用模式具有物種和組織特異性,正如研究觀察到的,10A1 假型載體在不同人類和嚙齒類細胞系中能有效利用 Ram-1,但在利用 Glvr-1 時的效率則有所差異。

使用 PT-67 細胞製備的逆轉錄病毒載體不含輔助病毒,可確保基因轉移實驗的安全性與效率。這使得 PT-67 成為實驗與治療應用中進行穩定基因遞送的寶貴工具,特別是在需要廣泛宿主範圍轉導的情況下。 PT-67包裝細胞的開發與優化,促進了基因治療領域的進展,使治療性基因能以更高的特異性與效率遞送至目標細胞。

Tissue
胚胎
Synonyms
  • RetroPack PT67
  • PT-67

02Classification

Organism
Mouse
Sex
Male
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This murine NIH-3T3-derived packaging cell line (PT-67) contains a circularly permuted clone of the 10A1 retrovirus delivered via B6 plasmid transfection, supporting production of amphotropic retroviral particles. The inserts are stably present. This classification applies only within Germany and may differ elsewhere.
Biosafety level
2

03Characteristics

Morphology
成纖維細胞
Cell type
成纖維細胞

04Identifiers

Citation
PT-67(Cytion 型號 305483)
NCBI TaxID
10090
Cellosaurus
CVCL_9093

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)
Dissociation reagent
Accutase
Seeding density
2–4×10⁴/cm²
Fluid renewal
每週 2 至 3 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.

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。

07Donor

Donor age
未指定