LS411N细胞
数量： 大量
ATCC Number： CRL-2159™
相关**： 大肠癌
生长状态： 贴壁生长
是否是肿瘤细胞： 1
物种来源： 人
器官来源： 盲肠
细胞形态： 上皮样
年限： Dukes' type B
运输方式： 冻存运输
Designations: LS411N
Depositors: L Suardet
LS411N细胞Biosafety Level: 1
Shipped: frozen
Medium & Serum: See Propagation
Growth Properties: adherent
Organism: Homo sapiens
Morphology: epithelial
Source: Organ: cecum
Tumor Stage: Dukes' type B
Disease: colorectal carcinoma
Cellular Products: transforming growth factor beta 1 (TGF, 189 pg per 10 exp6 cells per 24 hours)
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Isolation: Isolation date: 1985
Tumorigenic: Yes
Antigen Expression: carcinoembryonic antigen (CEA); ICAM-1; MHC class I positive; MHC Class II (HLA DR, DQ, DP) negative
Cytogenetic Analysis: LS411N细胞modal number = 75, X.
Age: 32 years
Gender: male
Ethnicity: Caucasian
Comments: LS411N is a colorectal carcinoma cell line isolated in 1985 from a primary tumor biopsy of a Dukes' B, poorly differentiated cecal carcinoma.
The LS411 cell line was found to be contaminated with mycoplasma, and was passed through nude mice to clear the cells of mycoplasma.
The cells obtained after passage in nude mice are referred to as LS411N cells.
A culture submitted to the ATCC in September 1994 was found to be contaminated with mycoplasma, and progeny were cured by a 21 day treatment with BM Cycline.
Approximately 20% of LS411N cells express surface carcinoembryonic antigen (CEA).
The cells express low levels of ICAM-1 HLA class I antigen beta-2-microglobulin.
The cells secrete low levels of latent TGF-beta 1.
TGF-beta 1 and TGF beta�2 are do not inhibit the proliferation of LS411N cells.
LS411N细胞Colony forming efficiency was 25% in methylcellulose medium.
Propagation: ATCC complete growth medium: The base medium for this cell line is ATCC-formulated RPMI-1640 Medium, Catalog No. 30-2001. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%.
Subculturing: Protocol: Remove medium, and rinse with 0.25% trypsin, 0.53 mM EDTA solution. Remove the solution and add an additional 1 to 2 ml of trypsin-EDTA solution. Allow the flask to sit at room temperature (or at 37C) until the cells detach.Add fresh culture medium, aspirate and dispense into new culture flasks.
Subcultivation Ratio: A subcultivation ratio of 1:3 is recommended
Medium Renewal: Twice per week
Preservation: Freeze medium: Complete growth medium, 95%; DMSO, 5%
Storage temperature: liquid nitrogen vapor phase
Doubling Time: 24 hrs
Related Products: Recommended medium (without the additional supplements or serum described under ATCC Medium):ATCC 30-2001
recommended serum:ATCC 30-2020
References: 23099: Suardet L, et al. LS411N细胞Responsiveness of three newly established human colorectal cancer cell lines to transforming growth factors beta 1 and beta 2. Cancer Res. 52: 3705-3712, 1992. PubMed: 1617643
