U2OS-CRISPR-TPR-SNAP Cells

USUSD$800.00*

Products are shipped frozen on dry ice in cryotubes. Each cryotube typically contains 3 × 10⁶ cells for adherent lines or 5 × 10⁶ cells for suspension lines (refer to the batch CoA for details).

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cryovial

產品編號： 300667

安全資料表

產品說明書

分析證明書 (CoA)

說明	U2OS-CRISPR-TPR-SNAP is a genome-edited human osteosarcoma cell line derived from U2OS cells in which the endogenous TPR (Translocated Promoter Region) gene has been modified using CRISPR/Cas9 technology to encode an in-frame SNAP tag. TPR is a large coiled-coil nucleoporin that localizes to the nuclear basket on the nucleoplasmic side of the nuclear pore complex (NPC). By tagging TPR at its endogenous locus, the fusion protein is expressed under native regulatory control, preserving physiological expression levels and maintaining proper incorporation into the nuclear basket structure. The SNAP tag enables covalent labeling of TPR with benzylguanine-conjugated fluorescent substrates in live or fixed cells, allowing highly specific and stable visualization. In U2OS-CRISPR-TPR-SNAP cells, labeled TPR displays a characteristic punctate ring-like distribution at the nuclear envelope, corresponding to NPC-associated nuclear basket structures. This system is well suited for quantitative fluorescence microscopy, super-resolution imaging, pulse-chase labeling, and dynamic studies of nuclear basket assembly and turnover. The flat morphology and large nuclei of U2OS cells facilitate high-resolution imaging of nuclear envelope-associated structures. TPR plays critical roles in mRNA export, nuclear transport regulation, chromatin organization at the nuclear periphery, and spatial genome organization. TPR is also implicated in the formation of nuclear transport-related subcompartments and in the exclusion of heterochromatin from nuclear pore-associated regions. U2OS-CRISPR-TPR-SNAP provides a physiologically relevant model for dissecting the architecture and dynamics of the nuclear basket, investigating nucleocytoplasmic trafficking mechanisms, and studying nuclear envelope-associated chromatin interactions under endogenous expression conditions.
生物體	Human
組織	Bone
疾病	Osteosarcoma

年齡	15 years
性別	Female
族裔	Caucasian
形態學	Epithelial-like
生長特性	Adherent

引用	U2OS-CRISPR-TPR-SNAP (Cytion catalog number 300667)
生物安全等級	1
NCBI_TaxID	9606
存款人	The Ellenberg Lab (EMBL)
轉基因狀態	GMO-S1: This human osteosarcoma cell line (U2OS-CRISPR-TPR-SNAP) contains a CRISPR-engineered TPR-SNAP fusion enabling fluorescent and chemical labeling of the TPR nuclear basket protein. The construct is stably integrated. This classification applies only within Germany and may differ elsewhere.

蛋白質表達	TPR, SNAP-tag

培養基	McCoys 5a, w: 3.0 g/L Glucose, w: stable Glutamine, w: 2.0 mM Sodium pyruvate, w: 2.2 g/L NaHCO3 (Cytion article number 820200a)
營養補充品	Supplement the medium with 10% FBS, 3.0 g/L Glucose, stable Glutamine, 2.0 mM Sodium pyruvate, 2.2 g/L NaHCO3, 1% NEAA
解離試劑	Accutase
傳代培養	Remove the old medium from the adherent cells and wash them with PBS that lacks calcium and magnesium. For T25 flasks, use 3-5 ml of PBS, and for T75 flasks, use 5-10 ml. Then, cover the cells completely with Accutase, using 1-2 ml for T25 flasks and 2.5 ml for T75 flasks. Let the cells incubate at room temperature for 8-10 minutes to detach them. After incubation, gently mix the cells with 10 ml of medium to resuspend them, then centrifuge at 300xg for 3 minutes. Discard the supernatant, resuspend the cells in fresh medium, and transfer them into new flasks that already contain fresh medium.
冷凍培養基	As a cryopreservation medium, we use complete growth medium (including FBS) + 10% DMSO for adequate post-thaw viability, or CM-1 (Cytion catalog number 800100), which includes optimized osmoprotectants and metabolic stabilizers to enhance recovery and reduce cryo-induced stress.
細胞解凍與培養	Confirm that the vial remains deeply frozen upon delivery, as cells are shipped on dry ice to maintain optimal temperatures during transit. 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. 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. Perform all subsequent steps under sterile conditions in a flow hood, disinfecting the cryovial with 70% ethanol before opening. 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. Centrifuge the mixture at 300 x g for 3 minutes to separate the cells and carefully discard the supernatant containing residual freezing medium. 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. Adhere to established subculture protocols for continued growth and maintenance of the cell line, ensuring reliable experimental outcomes.
培養環境	37°C, 5% CO₂, humidified atmosphere.
運送條款	Cryopreserved cell lines are shipped on dry ice in validated, insulated packaging with sufficient refrigerant to maintain approximately −78 °C throughout transit. On receipt, inspect the container immediately and transfer vials without delay to appropriate storage.
儲存條件	For long-term preservation, place vials in vapor-phase liquid nitrogen at about −150 to −196 °C. Storage at −80 °C is acceptable only as a short interim step before transfer to liquid nitrogen.

不孕症	Mycoplasma contamination is excluded using both PCR-based assays and luminescence-based mycoplasma detection methods. To ensure there is no bacterial, fungal, or yeast contamination, cell cultures are subjected to daily visual inspections.