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HBE4-E6/E7 [NBE4-E6/E7]

CRL-2078

Product category
Human cells
Organism
Homo sapiens, human
Cell type
epithelial cell
Morphology
epithelial
Tissue
Lung; Bronchus
Disease
Normal
Applications
3D cell culture
Product format
Frozen
Storage conditions
Vapor phase of liquid nitrogen
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Documentation

ATCC determines the biosafety level of a material based on our risk assessment as guided by the current edition of Biosafety in Microbiological and Biomedical Laboratories (BMBL), U.S. Department of Health and Human Services. It is your responsibility to understand the hazards associated with the material per your organization’s policies and procedures as well as any other applicable regulations as enforced by your local or national agencies.

Cells contain Human papillomavirus (HPV) sequences

ATCC highly recommends that appropriate personal protective equipment is always used when handling vials. For cultures that require storage in liquid nitrogen, it is important to note that some vials may leak when submersed in liquid nitrogen and will slowly fill with liquid nitrogen. Upon thawing, the conversion of the liquid nitrogen back to its gas phase may result in the vial exploding or blowing off its cap with dangerous force creating flying debris. Unless necessary, ATCC recommends that these cultures be stored in the vapor phase of liquid nitrogen rather than submersed in liquid nitrogen.

Required Products

These products are vital for the proper use of this item and have been confirmed as effective in supporting functionality. If you use alternative products, the quality and effectiveness of the item may be affected.

Detailed product information

Characteristics

Growth properties
Adherent
Derivation
The HBE4-E6/E7 (formerly NBE4-E6/E7) cell line was derived from normal bronchial epithelium taken from a man undergoing a left upper lobectomy for a poorly differentiated (T2 N0) adenocarcinoma.
Cells from the primary explant in their first passage were transfected with the p1321 plasmid encoding the E6 and E7 genes of Human Papilloma virus type 16 (HPV 16) under the control of the human beta actin promotor.
Age
60 years
Ethnicity
White
Gender
Male
Immortalization method
HPV-16 E6/E7 expression
Karyotype
45, X, -Y, dup (5), -8, +9, -20, -22, +mar1, +mar2
Tumorigenic
No;
No, not tumorigenic in nude mice
Comments
These sequences are known to bind to and inactivate endogenous p53 and Rb proteins respectively.
Southern blot analysis shows that stable integration of the transfected genes occurred.
The cell line resembles morphologically the basal cells of the normal human bronchial epithelium, and is not tumorigenic in athymic nude mice.
The cells are able to form tubules when grown in a basement membrane like matrix, and they retain the ability to undergo terminal squamous differentiation in response to phorbol esters or upon reaching confluence.
Cells are non-viable in DMSO and should be frozen in culture Medium with 10% glycerol.
Original authentication testing at ATCC by isoenzymology indicated that this was a human cell line. Recent additional speciation using a mitochondrial cytochrome c oxidase I (CO1) assay has shown that this cell line is cross-contaminated with bovine cells. Additional more sensitive PCR assays of the original token lot have also indicated a low level of bovine cross-contamination in that material as well.

Handling information

Unpacking and storage instructions
  1. Check all containers for leakage or breakage.
  2. Remove the frozen cells from the dry ice packaging and immediately place the cells at a temperature below ­-130°C, preferably in liquid nitrogen vapor, until ready for use.
Complete medium
The base medium for this cell line is provided by Invitrogen (GIBCO) as part of a kit: Keratinocyte Serum Free Medium (K-SFM), Kit Catalog Number 17005-042. This kit is supplied with two additives required to grow this cell line (bovine pituitary extract (BPE) and human recombinant epidermal growth factor (EGF). To make the complete growth medium, you will need to add the following components to the base medium:
  • 0.05 mg/ml BPE - provided with the K-SFM kit
  • 5 ng/ml EGF - provided with the K-SFM kit
  • 10 ng/ml cholera toxin - not provided with kit
NOTE: Do not filter complete medium
Temperature
37°C
Atmosphere
95% Air, 5% CO2
Handling procedure

To insure the highest level of viability, thaw the vial and initiate the culture as soon as possible upon receipt. If upon arrival, continued storage of the frozen culture is necessary, it should be stored in liquid nitrogen vapor phase and not at -70°C.  Storage at -70°C will result in loss of viability.

  1. Thaw the vial by gentle agitation in a 37°C water bath. To reduce the possibility of contamination, keep the O-ring and cap out of the water.  Thawing should be rapid (approximately 2 minutes).
  2. Remove the vial from the water bath as soon as the contents are thawed, and decontaminate by dipping in or spraying with 70% ethanol. All of the operations from this point on should be carried out under strict aseptic conditions.
  3. Transfer the vial contents to a 15 ml centrifuge tube and dilute with the recommended complete culture medium.
  4. Centrifuge the cell suspension at approximately 125 xg for 5 to 10 minutes.  Discard the supernatant and resuspend the cells with fresh    medium at the dilution ratio recommended in the specific batch  information..   It is important to avoid excessive alkalinity of the medium during recovery of the cells.  It is suggested that, prior to the addition of the vial contents, the culture vessel containing the growth medium be placed into the incubator for at least 15 minutes to allow the medium to reach its normal pH (7.0 to 7.6).
  5. Incubate the culture at 37°C in a suitable incubator.  A 5%  CO2 in air atmosphere is recommended if using the medium described on this product sheet.
Subculturing procedure
Volumes used in this protocol are for 75 cm2 flasks; proportionally reduce or increase amount of dissociation medium for culture vessels of other sizes.
  1. Remove and discard culture medium.
  2. Briefly rinse the cell layer with 0.25% (w/v) Trypsin - 0.53 mM EDTA solution containing 0.5% polyvinylpyrrolidone (PVP).
  3. Add 2.0 to 3.0 mL of Trypsin-EDTA-PVP solution to flask and observe cells under an inverted microscope until cell layer is dispersed (usually within 5 to 15 minutes).
    Note: To avoid clumping do not agitate the cells by hitting or shaking the flask while waiting for the cells to detach. Cells that are difficult to detach may be placed at 37°C to facilitate dispersal.
  4. Add 2.0 to 3.0 mL of complete growth medium containing 0.1% soybean trypsin inhibitor and 0.1% bovine serum albumin and aspirate cells by gently pipetting.Transfer cell suspension to a centrifuge tube and spin at approximately 125 x g for 5 to 10 minutes. Discard supernatant.
  5. Resuspend the cell pellet in fresh growth medium. Add appropriate aliquots of the cell suspension to new culture vessels.
  6. Incubate cultures at 37°C.
Subculture before the cells become confluent.
Subcultivation Ratio: A subcultivation ratio of 1:2 to 1:4 is recommended
Medium Renewal: Every 2 to 3 days
Reagents for cryopreservation
Growth medium with 10% glycerol.
Note: Lots manufactured prior to 05/20/2020 may have used a different cryopreservative, contact technical service if needed.

Quality control specifications

Mycoplasma contamination
Not detected
Population doubling time
Approximately 24 hrs
STR profiling
Amelogenin: X,Y
CSF1PO: 11,12
D13S317: 11
D16S539: 11,13
D5S818: 10,11
D7S820: 10,11
TH01: 6,8
TPOX: 8
vWA: 14,17
D3S1358: 16,17
D21S11: 33.2
D18S51: 16,18
Penta_E: 5,13
Penta_D: 12
D8S1179: 13,14
FGA: 21,25
D19S433: 15.2,16.2
D2S1338: 17

History

Deposited as
Homo sapiens
Depositors
J Viallet

Legal disclaimers

Intended use
This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use.
Warranty

The product is provided 'AS IS' and the viability of ATCC® products is warranted for 30 days from the date of shipment, provided that the customer has stored and handled the product according to the information included on the product information sheet, website, and Certificate of Analysis. For living cultures, ATCC lists the media formulation and reagents that have been found to be effective for the product. While other unspecified media and reagents may also produce satisfactory results, a change in the ATCC and/or depositor-recommended protocols may affect the recovery, growth, and/or function of the product. If an alternative medium formulation or reagent is used, the ATCC warranty for viability is no longer valid.  Except as expressly set forth herein, no other warranties of any kind are provided, express or implied, including, but not limited to, any implied warranties of merchantability, fitness for a particular purpose, manufacture according to cGMP standards, typicality, safety, accuracy, and/or noninfringement.

Disclaimers

This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use. Any proposed commercial use is prohibited without a license from ATCC.

While ATCC uses reasonable efforts to include accurate and up-to-date information on this product sheet, ATCC makes no warranties or representations as to its accuracy. Citations from scientific literature and patents are provided for informational purposes only. ATCC does not warrant that such information has been confirmed to be accurate or complete and the customer bears the sole responsibility of confirming the accuracy and completeness of any such information.

This product is sent on the condition that the customer is responsible for and assumes all risk and responsibility in connection with the receipt, handling, storage, disposal, and use of the ATCC product including without limitation taking all appropriate safety and handling precautions to minimize health or environmental risk. As a condition of receiving the material, the customer agrees that any activity undertaken with the ATCC product and any progeny or modifications will be conducted in compliance with all applicable laws, regulations, and guidelines. This product is provided 'AS IS' with no representations or warranties whatsoever except as expressly set forth herein and in no event shall ATCC, its parents, subsidiaries, directors, officers, agents, employees, assigns, successors, and affiliates be liable for indirect, special, incidental, or consequential damages of any kind in connection with or arising out of the customer's use of the product. While reasonable effort is made to ensure authenticity and reliability of materials on deposit, ATCC is not liable for damages arising from the misidentification or misrepresentation of such materials.

Please see the material transfer agreement (MTA) for further details regarding the use of this product. The MTA is available at www.atcc.org.

Frequently Asked Questions

References

Curated Citations

Viallet J, et al. Characterization of human bronchial epithelial cells immortalized by the E6 and E7 genes of human papillomavirus type 16. Exp. Cell Res. 212: 36-41, 1994. PubMed: 8174640

Tsao MS, et al. Autocrine growth loop of the epidermal growth factor receptor in normal and immortalized human bronchial epithelial cells. Exp. Cell Res. 223: 268-273, 1996. PubMed: 8601403

Hay, R. J., Caputo, J. L., and Macy, M. L., Eds. (1992), ATCC Quality Control Methods for Cell Lines. 2nd edition, Published by ATCC.

Caputo, J. L., Biosafety procedures in cell culture. J. Tissue Culture Methods 11:223-227, 1988.

Fleming, D.O., Richardson, J. H., Tulis, J.J. and Vesley, D., (1995) Laboratory Safety: Principles and Practice. Second edition, ASM press, Washington, DC.

Need assistance with this product? Contact our Technical Support team.

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