ATCC Number： HTB-19?

相關**： 腫瘤

器官來源： **

運輸方式： 凍存運輸

生長狀態： 貼壁生長

年限： 74 years

數量： 大量

細胞形態： 上皮樣

是否是腫瘤細胞： 0

物種來源： 人

Designations: BT-20

Depositors: EY Lasfargues

Biosafety Level: 1

BT-20細胞Shipped: frozen

Medium & Serum: See Propagation

Growth Properties: adherent

Organism: Homo sapiens

Morphology: epithelial

Source: Organ: mammary gland; breast

Disease: carcinoma

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Isolation: Isolation date: 1958

Applications: BT-20 cells are negative for estrogen receptor, but do express an estrogen receptor mRNA that has deletion of exon 5.

This breast tumor line was established by E.Y. Lasfargues and L. Ozzello in 1958 by isolation and cultivation of cells spilling out of the tumor when it was cut in thin slices.

Tumorigenic: Yes

Reverse Transcript: negative

Antigen Expression: HLA A1, Bw16 (+/-)

BT-20細胞DNA Profile (STR): Amelogenin: X

CSF1PO: 12

D13S317: 11

D16S539: 11,14

D5S818: 12

D7S820: 10

THO1: 7,9.3

TPOX: 11

vWA: 16,17

Cytogenetic Analysis: Normal chromosomes N3, N4, N9, N13, N14, and X may be absent. The markers der(11)t(11;?)(q25;?) (M1); der(1)t(1;3)(p22?;p13?) (M2); and der(2)t(2;?) (q37;?) (M5) were detected by W.A. Nelson-Rees, et al., Int. J. Cancer 16: 74-85, 1975.

Isoenzymes: AK-1, 1-2

ES-D, 1

G6PD, B

GLO-I, 1-2

PGM1, 1

PGM3, 1

Age: 74 years

Gender: female

Ethnicity: Caucasian

Comments: The cells express the WNT3 and the WNT7B oncogenes [PubMed: 8168088].

This breast tumor line was established by E.Y. Lasfargues and L. Ozzello in 1958 by isolation and cultivation of cells spilling out of the tumor when it was cut in thin slices. A mycoplasma contaminant was discovered and eliminated early in 1972.

Growth of BT-20 cells is inhibited by tumor necrosis factor alpha (TNF alpha).

BT-20 cells are negative for estrogen receptor, but do express an estrogen receptor mRNA that has deletion of exon 5.

Propagation: BT-20細胞ATCC complete growth medium: The base medium for this cell line is ATCC-formulated Eagle's Minimum Essential Medium, Catalog No. 30-2003. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%.

Atmosphere: air, 95%; carbon dioxide (CO2), 5%

Temperature: 37.0°C

Subculturing: Protocol:

Remove and discard culture medium.

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.

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.

Add 6.0 to 8.0 ml of complete growth medium and aspirate cells by gently pipetting.

Add appropriate aliquots of the cell suspension to new culture vessels.

Incubate cultures at 37?C.

Subcultivation Ratio: A subcultivation ratio of 1:2 to 1:4 is recommended

Medium Renewal: 2 to 3 times per week

Preservation: Freeze medium: Complete growth medium supplemented with 5% (v/v) DMSO

Storage temperature: liquid nitrogen vapor phase

Related Products: Recommended medium (without the additional supplements or serum described under ATCC Medium):ATCC 30-2003

recommended serum:ATCC 30-2020

References: 21405: Sugarman BJ, et al. Recombinant human tumor necrosis factor-alpha: effects on proliferation of normal and transformed cells in vitro. Science 230: 943-945, 1985. PubMed: 3933111

22536: Fogh J, et al. Absence of HeLa cell contamination in 169 cell lines derived from human tumors. J. Natl. Cancer Inst. 58: 209-214, 1977. PubMed: 833871

23079: Lan MS, et al. Polypeptide core of a human pancreatic tumor mucin antigen. Cancer Res. 50: 2997-3001, 1990. PubMed: 2334903

23110: Castles CG, et al. Expression of a constitutively active estrogen receptor variant in the estrogen receptor-negative BT-20 human breast cancer cell line.BT-20細胞 Cancer Res. 53: 5934-5939, 1993. PubMed: 8261406

23113: Huguet EL, et al. Differential expression of human Wnt genes 2, 3, 4, and 7B in human breast cell lines and normal and disease states of human breast tissue. Cancer Res. 54: 2615-2621, 1994. PubMed: 8168088

23212: Lasfargues EY, Ozzello L. Cultivation of human breast carcinomas. J. Natl. Cancer Inst. 21: 1131-1147, 1958. PubMed: 13611537

23226: Pollack MS, et al. HLA-A, B, C and DR alloantigen expression on forty-six cultured human tumor cell lines. J. Natl. Cancer Inst. 66: 1003-1012, 1981. PubMed: 7017212

32275: Littlewood-Evans AJ, et al. The osteoclast-associated protease cathepsin K is expressed in human breast carcinoma. Cancer Res. 57: 5386-5390, 1997. PubMed: 9393764

32488: Geiger T, et al. Antitumor activity of a PKC-alpha antisense oligonucleotide in combination with standard chemotherapeutic agents against various human tumors transplanted into nude mice. Anticancer Drug Des. 13: 35-45, 1998. PubMed: 9474241