We examined the ability o f human chromosome 11 derived from normal fibroblast cells to suppress the tumorigenicity of SiHa cells, a human cervical tumor cell line. Using DNA transfection, the human chromosome was tagged with a selectable marker (the pSV2neo gene, which encodes resistance t o the an
Properties of a non-tumorigenic human cervical keratinocyte cell line
β Scribed by Margaret A. Stanley; Helena M. Browne; Mark Appleby; Anthony C. Minson
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- French
- Weight
- 720 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0020-7136
No coin nor oath required. For personal study only.
β¦ Synopsis
A human cervical keratinocyte cell line, W 12, has been initiated from a low-grade cervical lesion histologically diagnosed as CIN I. This cell line has, to date, undergone over 300 generations in vitro with an average doubling time of 30 hr: an aneuploid karyotype has developed with progressive in vitro growth. WI2 contains HPV16 DNA present at approximately 100 copies and the state of the viral DNA over a number of passages has been examined. The HPV16 DNA is stably maintained at high copy number over several passages and restriction enzyme analysis together with electrophoresis of uncleaved viral DNA indicate that it is present predominantly as the episomal molecule. W12 cells exhibit a typical keratinocyte morphology and, when transplanted into the flank of the nude mouse, form an epithelial lesion with the histological features of CIN 1/11.
π SIMILAR VOLUMES
The interaction of tumor cells with extracellular-matrix components is suspected to play an important role in tumorigenesis induction. The tumorigenicity of a poorly tumorigenic human colon-adenocarcinoma cell line (BCS-TC2) was induced by co-injection with Matrigel. A new cell sub-line, BCS-TC2. I,
Human malignant melanoma cell lines characterized by either a high or a low ability to grow subcutaneously in athymic n-ude mice have been examined for their cell-surface glycoproteins. Striking differences were demonstrated between these 2 groups. Cells from lines of low tumorigenicity (LT group) d
## Loss of heterozygosity (LOH ) of mouse chromosome 7 has been consistently demonstrated in chemically induced murine squamous cell carcinomas (SCCs). The region of this chromosome presenting LOH in the mouse tumors is syntenic to human chromosome segments I I p I 5 and I I q. To determine whethe
The retinoic-acid-receptor beta gene (RAR-beta) encodes a suspected tumor suppressor for several types of human carcinomas. RAR-beta transcription is induced by retinoic acid (RA) through retinoid receptors which bind as heterodimers of a RA-activated RA receptor (RAR) and a retinoid X receptor to t
## Abstract Clonal analysis has shown that the SW613βS human colonβcarcinoma cell line is heterogeneous; some cell clones display a high level of amplification of the cβ__myc__ gene and are tumorigenic in nude mice, whereas others have a small number of copies of this gene and are nonβtumorigenic.