Immortalized Mouse Osteocytic Cells-Conditionally (IDG-SW3)

T02311x106 cells / 1.0 ml



IDG-SW3 represent a non-homogenous population progressing from early osteoblasts to late osteocytic. These cells express functional SV40 large T antigen that is induced in the presence of IFN γ under permissive temperature (33°C) and express GFP under control of the dentin matrix (Dmp1) promoter. Initial culture shows osteoblastic phenotype, however when under mineralizing conditions, the cells start to express early osteocyte markers such as E11/podoplanin, followed by Dmp1 and mature markers SOST and FGF23 by 21-28 days of culture.

Similar to osteocytes in vivo, these cells respond to hormonal signals such as PTH and 1,25-dihydroxyvitamin-D3. IDG-SW3 cells can be maintained in both 2D and 3D cultures and are useful for study of osteocytes at various differentiation stages. It should be noted that these cultures may contain a mixture of osteoblasts and osteocytes at different stages of differentiation and for studies requiring enriched osteocytes, the Dmp1-GFP cells should be isolated by flow cytometry (FACS).

SpeciesMouse (M. musculus)
Species description3-month old Immortomouse+/- crossed with Dmp1-GFP+/- transgenic mouse
Tissue/Organ/Organ SystemSkeletal
Growth PropertiesAdherent
Cell MorphologyPolygonal
Seeding Density25,000 - 30,000 cells/cm2
Population Doubling Time40 - 50 hours
Immortalization MethodIsolated from long bones of transgenic mice (in which the Dmp1 promoter drives the expression of GFP).

For Research Use Only

Unit quantity1x106 cells / 1.0 ml
Cell TypeImmortalized Cells
Expression Profile

ALP (osteoblast), E11/gp38, Dmp1 and Phex (osteocyte), SOST/sclerostin and FGF23 (late osteocyte)

Propagation Requirements
Use of PriCoatTMT25 Flasks (G299) or Applied Cell Extracellular Matrix (G422) is required for cell adhesion to the culture vessels. Grow cells inECM-coated culture vessels unless otherwise specified in the Propagation Requirements below.

The base medium for this cell line is Prigrow III medium available at abm, Cat. No. TM003. To make the complete growth medium, add the following components to the base medium: fetal bovine serum (TM999)* to a final concentration of 10%, recombinant mouse IFNG (Z200085) to a final concentration of 50 U/ml and Penicillin/Streptomycin Solution (G255) to a final concentration of 1%.
Change media every 2-3 days.
Carbon dioxide (CO2): 5%, Temperature: 33.0°C.

To induce osteogenesis, replace the culture medium with the following osteogenic media: Prigrow III medium (TM003) with fetal bovine serum (TM999)* to a final concentration of 10%, ascorbic acid to a final concentration of 50 µg/ml, β-glycerophosphate to a final concentration of 4 mM and Penicillin/Streptomycin Solution (G255) to a final concentration of 1% in the absence of IFNG at 37.0°C. Change the media every three days. GFP expression should be observed by day 4 under differentiation conditions, and become strong by day 10-15 of culture.
* Do not use heat-inactivated FBS for cell culture unless specified otherwise.


(1) Presence and absence of SV40 large T-antigen, under permissive and non-permissive conditions, were confirmed using western blot. (2) Fluorescent imaging was used to measure Dmp1 promoter driven GFP expression in osteogenic conditions. (3) Von Kossa staining was used to show focal nodular mineralization and Alizarin red S staining was used to detect calcium deposition of the differentiated cells.


1. For for-profit organizations and corporations, please contact [email protected] for pricing of this item.

2. Sale of this item is subjected to the completion of a Material Transfer Agreement (MTA) by the purchasing individual/institution for each order. If you have any questions regarding this, please contact us at [email protected].

3. All test parameters provided in the CoA are conducted using abm's standardized culture system and procedures. The stated values may vary under the end-user's culture conditions. Please verify that the product is suitable for your studies by referencing published papers or ordering RNA (0.5 μg, Cat.# C207, $450.00) or cell lysate (100 μg, Cat.# C206, $600.00) to perform preliminary experiments, or alternatively use our Gene Expression Assay Service (Cat# C138). All sales are final.

4. We recommend live cell shipments for ease of cell transfer and this option can be requested at the time of ordering. Please note that the end-user will need to evaluate the feasibility of live cell shipment by taking into account the final destination's temperature variation and its geographical location. In addition, we thoroughly test our cell lines for freeze-thaw recovery. If frozen cells were received and not recovered in your lab under the exact, specified conditions (using recommended culture vessel, media, additional supplements, and atmospheric conditions), a live cell replacement is possible at a cost (plus shipping).

5. All of abm's cell biology products are for research use ONLY and NOT for therapeutic/diagnostic applications. abm is not liable for any repercussions arising from the use of its cell biology product(s) in therapeutic/diagnostic application(s). Please contact a technical service representative for more information.

6. abm makes no warranties or representations as to the accuracy of the information on this site. Citations from literature and provided for informational purposes only. abm does not warrant that such information has been shown to be accurate.

7. abm warrants that cell lines shall be viable upon initiation of culture for a period of thirty (30) days after shipment and that they shall meet the specifications on the applicable abm Material Product Information sheet, certificate of analysis, and/or catalog description. Such thirty (30) day period is referred to herein as the "Warranty Period."

DepositorUniversity of Missouri

I want to make sure these cells express my gene of interest before I decide to buy the cell line. Can you provide a sample so this can be tested?
We do not carry out downstream characterization or gene expression profiling of our cell lines. To facilitate your preliminary experiments we can provide an RNA extraction (0.5ug total RNA) or cell lysate (100ug/100ul provided in 62.5mM Tris‐HCl, 2% SDS, 10% Glycerol, 50mM DTT, 0.01% w/v Bromophenol Blue) for any of our immortalized cell lines for a small fee. Please inquire directly for more information. The lead time will be around 2 weeks from the time of placing an order (if the item is in stock).
How often do I need to change the media?
The media should be changed every 2-3 days.
Why do these cells need bio safety level II?
In order to be more cautious, we follow the CDC-NIH recommendations that all mammalian sourced products should be handled at the Biological Safety Level 2 to minimize exposure of potentially infectious products. This information can be found in 'Biosafety in Microbiological and Biomedical Laboratories' (1999). Your institution's Safety Officer or Technical Services will be able to make the call as to whether BioSafety Level I is possible with these cells at your site if required.
Do you sell ECM coated T75 flasks?
Yes we can provide a coating service. Please inquire with [email protected]
What can I coat a larger dish to subculture?
We also offer applied extracellular matrix (collagen type I) in liquid form, for the coating of larger flasks and other required plasticware:
How long can I store frozen vials for?
Cells that are properly frozen using an effective cryoprotective agent can be stored in liquid nitrogen indefinitely without affecting their recovery.
Should the cap of the flask be changed before starting the cell culturing step?
No, there is no need in sterile biosafety cabinets unless it has contacted any non-sterile condition (e.g. touching the contaminated tip, etc.).
What is the recommended storage temperature?
In general, if you received: Live cells: acclimatize for 3-4 hrs at at the recommended conditions stated for the cell line under the propagation section, and then change media afterwards. Frozen cells: Immediately place cells in liquid nitrogen; -180C.
How is cell density crucial for drug selection?
If antibiotic selection is applicable to the target cells, we suggest getting rid of all the background cells so that the cell density is kept lower (even 20-30%). However, once the clones are selected by clonal dilution, we don't need the drug to still be present. If needed, the cell density should be towards the higher end since cells are already selected. Any primary cells still present will be depleted as a result of senescence and the cell population that remains will be resistant to the specific antibiotic.
My cells are not detaching, what method do you recommend to trypsinize the cells?
1. Incubate the coated plate containing trypsin solution at recommended temperature indicated in the propagation section for 3-5 min till the cells round up, monitoring from time to time under microscope. 2. Diluting G422 (1:1) with PBS and coating for lesser time. Sometimes the collagen content in G422 is higher and thus make stronger bonding with cells. 3. You can try reducing the incubation time as well for coating the plate to make a thinner layer.
Why is it important to determine the optimal seeding density?
The seeding density we recommend is for when cells are plated to a new vessel. The optimal seeding density should allow cells to attach to the surface and have room to proliferate. If you seed too little, cells may not attach well to the surface (for adherent cells). Seeding density is important as many cells (adherent or suspension cells) need to be in close proximity for better growth. Cell-cell interactions allow cells to communicate with each other in response to changes in their microenvironment. This ability to send and receive signals is essential for the survival of the cell. In other cases, if the seeding density is too low, cells may attach but a retardation in cell growth is observed. If you seed too high, the cells will attach but there is insufficient room for further proliferation and they will stop replicating.

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