| Field | Specification |
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| Tissue | |
| Growth properties | |
| Biosafety level | |
| Product format | Frozen |
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Overview
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.
Key elements and design rationale
- Model identity: Immortalized Mouse Osteocytic Cells - Conditionally (IDG-SW3) is supplied as an engineered cell line derived from Mouse bone.
- Growth properties: Adherent, polygonal
- Growth conditions: Use of PriCoat™ T25 Flasks (G299) or Applied Cell Extracellular Matrix (G422) is required for cell adhesion to the culture vessels. PriGrow III (TM003) + 10% FBS(Regular*) + 50 ng/ml rmIFNG (Z200085) + 1% Penicillin/Streptomycin Solution (G255), 33.0°C, 5% CO₂ *Do not heat-inactivate
- Engineering / immortalization: Gfp reporter expression.
- Product format: Frozen, BSL-2
This cell-based model is generally used in cell fate, differentiation, and expansion studies. Donor/background information is available for contextual interpretation.
Biological background
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).The presence and absence of SV40 large T-antigen under permissive and non-permissive conditions, were confirmed using western blot. Donor/background information provided for this product: 3-month old Immortomouse+/- crossed with Dmp1-GFP+/- transgenic mouse.
Research relevance and current trends
- Engineered cell lines are widely used for reporter-based readouts, perturbation studies, and assay optimization in reproducible culture systems.
- Reporter or transgene-bearing models are often compared with matched parental or control cells to interpret signal changes in context.
- Expression trends are typically evaluated alongside passage number, selection pressure, and baseline growth behavior.
Common research applications
- Expansion and maintenance studies under defined growth conditions prior to downstream differentiation or phenotype analysis.
- Comparative experiments that examine changes in morphology, marker expression, or functional readouts over time.
- Assay development in culture systems where media composition and substrate selection influence interpretation.
Changes in morphology, growth rate, viability, or reporter signal are typically interpreted together with passage history, culture matrix, and the specified growth conditions for the model.
Notes for experimental interpretation
- Morphology, doubling behavior, and reporter or marker output can shift with passage number, substrate choice, and medium composition; these variables should be recorded alongside experimental readouts.
- Matched controls such as parental cells, untreated cultures, or parallel cultures maintained under identical conditions help distinguish background effects from biology of interest.
Culture and product details
- Growth Conditions: Use of PriCoat™ T25 Flasks (G299) or Applied Cell Extracellular Matrix (G422) is required for cell adhesion to the culture vessels. PriGrow III (TM003) + 10% FBS(Regular*) + 50 ng/ml rmIFNG (Z200085) + 1% Penicillin/Streptomycin Solution (G255), 33.0°C, 5% CO₂ *Do not heat-inactivate
- Seeding Density (cells/cm²): 25,000 - 30,000
- Thaw cells quickly in a 37°C water bath while agitating gently (maximum 2 minutes). The vial cap should be kept above the water level to minimize the risk of contamination.
- Decontaminate the vial by spraying and wiping the exterior of the vial with 70% ethanol. From this point onwards, all operations should be strictly carried out inside a biological safety cabinet using aseptic conditions.
- Transfer the cell suspension into a 15ml sterile conical tube containing 5ml of pre-warmed, complete growth media. Centrifuge cells at 125xg for 5-7 minutes.
- Aspirate the supernatant without disturbing the cell pellet. Re-suspend the cell pellet in the recommended pre-warmed, complete growth media and dispense into a T25 culture flask.
- Incubate the cells at the recommended conditions.
- Aspirate the culture media, and add 2-3ml of pre-warmed 0.25% Trypsin-EDTA to the culture vessel.
- Observe the cells under a microscope to confirm detachment (typically within 2-10 minutes). Cells that are difficult to detach can be put in 37°C, for several minutes to facilitate detachment.
- Neutralize Trypsin-EDTA by adding an equal volume of the complete growth media into the culture vessel.
- Transfer the culture suspension into a sterile centrifuge tube, and centrifuge at 125xg for 5 minutes. The actual centrifuge duration and speed may vary depending on the cell type.
- Aspirate the supernatant, and re-suspend the pellet with pre-warmed fresh complete growth media. Add appropriate aliquots of the cell suspension to new culture vessels, as desired.
- Incubate the cells at the recommended conditions.
How should I handle live cells once I receive them?
https://www.abmgood.com/immortalized-cells-documents.html
Following these guidelines will help ensure optimal cell viability and performance.
Why are these cells classified as biosafety level II?
What is your warranty or return policy?
Please refer to the following link for full information:
https://www.abmgood.com/terms
For additional questions, our Order team is happy to assist and can be reached at order@abmgood.com.
How many times can cells divide?
Primary cells have a limited lifespan and will undergo a finite number of population doublings before entering senescence. The exact number varies by cell type and culture conditions.
Immortalized cell lines are capable of extended or indefinite proliferation under proper culture conditions, although growth characteristics may vary between lines.
Do I need Applied Cell Extracellular Matrix (G422) if I am using PriCoat™ flasks?
Cell line sourcing and selection (species, tissue, and disease model matching) · Stable cell line engineering (overexpression, knockdown, knockout via CRISPR/Cas9, shRNA, sgRNA) · Reporter gene integration (GFP, RFP, luciferase, fluorescent/bioluminescent constructs) · Genome editing and knockin (point mutations, tagged endogenous proteins, conditional alleles) · Inducible expression systems (Tet-On/Off and regulatable constructs) · Drug resistance marker selection (puromycin, G418, hygromycin, and others) · Custom growth and media optimisation for specific assay requirements · Scale-up production for high-throughput screening campaigns · Authentication and QC services (STR profiling, mycoplasma testing, viability assessment). Talk to a Scientist or contact support@biohippo.com.
