SK-UT-1 Cells

Name: CLS Cell Lines Service GmbH
Address: Dr.-Eckener-Straße 8, Eppelheim, 69214, DE
Telephone: +496221405780
Price range: €€€

USD$395.00*

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).

Prices excl. taxes plus shipping costs

cryovial

Product number: 300455

Safety data sheet

Product sheet

Certificate of Analysis (CoA)

Description	The SK-UT-1 cell line is derived from human uterine leiomyosarcoma (ULMS), a highly aggressive form of cancer originating in the smooth muscle of the uterus. This cell line is a key model for studying tumorigenesis, metastasis, and drug resistance in ULMS. SK-UT-1 cells exhibit features of sarcomas, including rapid proliferation, poor differentiation, and resistance to conventional therapies. In particular, they are used to investigate cancer stem-like cells (CSCs), which play a significant role in cancer recurrence and resistance to chemotherapy. Research has identified a subpopulation of CD133+ CSCs within SK-UT-1 cells, which demonstrate enhanced self-renewal, colony formation, and resistance to apoptosis. Studies using SK-UT-1 have focused on characterizing the CD133+ CSCs, revealing their ability to form tumorspheres, a feature indicative of stem cell-like behavior. This subpopulation shows increased tumorigenic potential in vivo, where even a small number of cells (10⁴) are sufficient to initiate tumor formation in xenograft models. The CD133+ cells exhibit resistance to chemotherapeutic agents such as doxorubicin, which further supports their role in therapy resistance. Additionally, elevated levels of CSC-related markers, including CD44, ALDH1, and BMI1, were found in CD133+ cells compared to their CD133− counterparts, confirming their role as cancer stem cells. SK-UT-1 cells have become a vital tool in understanding ULMS progression and in developing potential therapeutic strategies. Targeting the CD133+ cancer stem-like cell population within these tumors may offer a promising approach to improve outcomes in patients with ULMS by addressing the root causes of metastasis and chemoresistance.
Organism	Human
Tissue	Uterine
Disease	Mixed mesodermal tumor, consistent with leiomyosarcoma (grade III)
Synonyms	SK UT 1, SKUT-1, SKUT1, Skut1

Age	75 years
Gender	Female
Ethnicity	Caucasian
Morphology	Epithelial-like
Growth properties	Adherent

Citation	SK-UT-1 (Cytion catalog number 300455)
Biosafety level	1
NCBI_TaxID	9606
CellosaurusAccession	CVCL_0533

Isoenzymes	Me-2, 1-2, PGM3, 1, PGM1, 1, ES-D, 1, AK-1, 1, GLO-1, 1-2, G6PD, B.
Tumorigenic	Yes, in nude mice. Forms spindle cell sarcoma
Karyotype	(P8) hypodiploid to hyperdiploid. Phenotype Frequency Product: 0.0590

Culture Medium	EMEM (MEM Eagle), w: 2 mM L-Glutamine, w: 2.2 g/L NaHCO3, w: EBSS (Cytion article number 820100a)
Supplements	Supplement the medium with 10% FBS and 1% NEAA
Dissociation Reagent	Accutase
Subculturing	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.
Seeding density	1 x 10⁴ cells/cm²
Fluid renewal	2 times per week
Freeze medium	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.
Thawing and Culturing Cells	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.
Incubation Atmosphere	37°C, 5% CO₂, humidified atmosphere.
Shipping Conditions	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.
Storage Conditions	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.

Sterility	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.

Lot Number	Certificate Type	Date	Catalog Number
300455-290825	Certificate of Analysis	05. Dec. 2025	300455
300455-413	Certificate of Analysis	23. May. 2025	300455

SK-UT-1 Cells

General information

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Regulatory Data

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Quality Control & Molecular Analysis

Certificate of Analysis (CoA)