transfection host (Roche FuGENE® Transfection Reagents
technology from amaxa)

Yes, forms colonies in soft agar

This is a hypotriploid human cell line. The modal chromosome number is 65 occurring at 50% and polyploidy at 0.8%. 18 marker chromosomes are common to most cells, of which 7 are paired and 11 are single-copied. The t(8q14q), t(9q17q), t(10q17p) are among 7 paired markers common to most cells. N7, N9, and N10 are absent and N11 is generally present in 4 copies. DMs occurred, but infrequently. Q-band examination did not show the presence of a Y chromosome.

54 years adult

The cells express the WNT7B oncogene [PubMed: ].
The T-47 line was isolated by I. Keydar from a pleural effusion obtained from a 54 year old female patient with an infiltrating ductal carcinoma of the breast.
This differentiated epithelial substrain (T-47D) was found to contain cytoplasmic junctions and receptors to 17 beta estradiol, other steroids and calcitonin.

Protocol:

1. Remove and discard culture medium.
2. Briefly rinse the cell layer with 0.25% (w/v) Trypsin- 0.53 mM EDTA solution to remove all traces of serum that contains trypsin inhibitor.
3. Add 2.0 to 3.0 ml of Trypsin-EDTA 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 6.0 to 8.0 ml of complete growth medium and aspirate cells by gently pipetting.
5. Add appropriate aliquots of the cell suspension to new culture vessels.
6. Incubate cultures at 37°C.

Subcultivation ratio: A subcultivation ratio of 1:3 to 1:5 is recommended

Medium renewal: 2 to 3 times per week

32 hrs

1120: Judge SM , Chatterton RT Jr. Progesterone-specific stimulation of triglyceride biosynthesis in a breast cancer cell line (T-47D). Cancer Res. 43: 4407-4412, 1983. PubMed:
1122: Lamp SJ , et al. Calcitonin induction of a persistent activated state of adenylate cyclase in human breast cancer cells (T-47D). J. Biol. Chem. 256: 12269-12274, 1981. PubMed:
1123: Sher E , et al. Whole-cell uptake and nuclear localization of 1,25-dihydroxy-cholecalciferol by breast cancer cells (T-47D) in culture. Biochem. J. 200: 315-320, 1981. PubMed:
1124: Freake HC , et al. 1,25-Dihydroxyvitamin D3 specifically binds to a human breast cancer cell line (T-47D) and stimulates growth. Biochem. Biophys. Res. Commun. 101: 1131-1138, 1981. PubMed:
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25065: Bellet D , et al. Malignant transformation of nontrophoblastic cells is associated with the expression of chorionic gonadotropin beta genes normally transcribed in trophoblastic cells. Cancer Res. 57: 516-523, 1997. PubMed:
32244: Hoppe HC , et al. Identification of phosphatidylinositol mannoside as a mycobacterial adhesin mediating both direct and opsonic binding to nonphagocytic mammalian cells. Infect. Immun. 65: 3896-3905, 1997. PubMed:
32915: Burfeind P , et al. Antisense RNA to the type I insulin-like growth factor receptor suppresses tumor growth and prevents invasion by rat prostate cancer cells in vivo. Proc. Natl. Acad. Sci. USA 93: 7263-7268, 1996. PubMed:
58052: Keydar I , et al. Establishment and characterization of a cell line of human breast carcinoma origin. Eur. J. Cancer 15: 659-670, 1979. PubMed: 228940