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Reagents and instruments for immunology, cell biology and molecular biology.

KHOS-NP

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Cat# 300235

Size : 1cryovial

Contact local distributor :

Phone : +1 850 650 7790

Brand : CLS Cell Lines Service

Contact local distributor :

Phone : +1 850 650 7790

KHOS-NP Cells

Description	This cell line was derived from the HOS cell line (TE-85) by transformation using Kirsten murine sarcoma virus (Ki-MSV). The cells exhibit a high saturation density, a high plating efficiency in soft agar and produce tumors in nude mice. The cells are useful producing MSV pseudotypes with various ecotropic and xenotropic murine leukemia viruses. Cells carry the Ki-MSV genome but do not produce infectious virus particles or viral antigens.
Organism	Human
Tissue	Bone
Disease	Osteosarcoma
Synonyms	KHOS/NP, KHOS NP, KHOSNP, R-970-5, KHOS

Age	13 years
Gender	Female
Ethnicity	Caucasian
Morphology	Fibroblast-like
Growth properties	Monolayer, adherent

Citation	KHOS-NP (Cytion catalog number 300235)
Biosafety level	1

Tumorigenic	Yes, in nude mice.

Culture Medium	EMEM, w: 2 mM L-Glutamine, w: 1.5 g/L NaHCO3, w: EBSS, w: 1 mM Sodium pyruvate, w: NEAA (Cytion article number 820100c)
Medium supplements	Supplement the medium with 10% FBS
Passaging solution	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.
Split ratio	A ratio of 1:2 to 1:4 is recommended
Seeding density	2 x 10^4 cells/cm^2
Fluid renewal	2 to 3 times per week
Freezing recovery	After thawing, plate the cells at 5 x 10^4 cells/cm^2 and allow the cells to recover from the freezing process and to adhere for at least 24 hours.
Freeze medium	CM-1 (Cytion catalog number 800100) or CM-ACF (Cytion catalog number 806100)
Handling of cryopreserved cultures	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. Optionally, skip centrifugation but remove any remaining freezing medium after 24 hours. 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.

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.
STR profile	Amelogenin: x,x CSF1PO: 12 D13S317: 12 D16S539: 10,13 D5S818: 13 D7S820: 11,12 TH01: 6 TPOX: 8,11 vWA: 18 D3S1358: 15 D21S11: 31.2,32.2 D18S51: 17 Penta E: 7,12 Penta D: 9,10 D8S1179: 11,14 FGA: 24