B-LCL-HROC68 Cells

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

USD$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).

Prices excl. taxes plus shipping costs

cryovial

Product number: 302078

Safety data sheet

Product sheet

Description	B-LCL-HROC68 is an Epstein-Barr virus (EBV)-immortalized human B lymphoblastoid cell line established from tumor-infiltrating B cells (TiBc) isolated from a primary colorectal carcinoma designated HROC68. The parental tumor was a sporadic-type colorectal carcinoma resected from an adult male patient with advanced-stage disease. Fresh tumor tissue was mechanically dissociated, and B cells were cultured in the presence of EBV-containing supernatant derived from the B95/8 marmoset cell line, together with cyclosporin A to suppress outgrowth of T and NK cells. Long-term culture resulted in monoclonal expansion of B cells, as confirmed by immunoglobulin gene rearrangement analysis using BIOMED-2 multiplex PCR protocols, demonstrating a single dominant rearrangement pattern consistent with clonal origin. B-LCL-HROC68 secretes immunoglobulin G (IgG) as its exclusive isotype, with stable production over extended culture. In cell-based ELISA screening against allogeneic colorectal cancer cell lines (HROC24, HROC46, and HCT116), IgG derived from B-LCL-HROC68 demonstrated measurable tumor cell binding, with the strongest signal observed against HCT116 cells. However, subsequent flow cytometric validation indicated comparatively weak binding affinity relative to other TiBc-derived IgGs. These findings indicate that B-LCL-HROC68 represents a monoclonal, antigen-experienced tumor-infiltrating B-cell line capable of producing functional IgG with detectable tumor cell reactivity, providing a useful in vitro tool for investigating humoral immune responses within the colorectal carcinoma microenvironment and for potential identification of tumor-associated antigens.
Organism	Human
Tissue	Peripheral blood
Disease	Carcinoma
Synonyms	Bc HROC68, TiBcHROC68

Age	84 years
Gender	Male
Ethnicity	Caucasian
Morphology	Round cells
Cell type	B lymphoblast
Growth properties	Suspension

Citation	B-LCL-HROC68 (Cytion catalog number 302078)
Biosafety level	2
NCBI_TaxID	9606
CellosaurusAccession	CVCL_A7UU

Surface antigens	CD19
Viruses	Transformant: EBV

Culture Medium	RPMI 1640, w: 2.0 mM stable Glutamine, w: 2.0 g/L NaHCO3 (Cytion article number 820700a)
Supplements	Supplement the medium with 10% heat-inactivated FBS
Subculturing	Gently homogenize the cell suspension in the flask by pipetting up and down, then take a representative sample to determine the cell density per ml. Dilute the suspension to achieve a cell concentration of 1 x 10⁵ cells/ml with fresh culture medium, and aliquot the adjusted suspension into new flasks for further cultivation.
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.

B-LCL-HROC68 Cells

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