Evidence for human DNA-mediated transfer of the suppressed phenotype into malignant Chinese hamster cells.

Abstract:

:Genetic suppression of the neoplastic phenotype has been demonstrated in somatic cell hybrids between tumor and normal cells. Suppression in whole-cell and microcell hybrids cannot, as yet, be attributed to specific elements defined at the molecular level. To identify a gene capable of suppressing the neoplastic phenotype, we have introduced DNA of normal human cells into tumorigenic Chinese hamster Wg3-h-o cells. Primary and secondary transfectants which exhibit the suppressed phenotype similar to Wg3-h-o x embryonic fibroblast hybrids were selected. The cells require serum growth factors and anchorage for proliferation in vitro and show a reduced tumorigenicity in nude mice. Transferred human DNA segments were molecularly cloned from a secondary transfectant. Indirect evidence suggests that the cloned human DNA is associated with the expression of the suppressed phenotype.

journal_name

Oncogene

journal_title

Oncogene

authors

Schäfer R,Nirkko AC,Ambühl PM,Grzeschik KH,Schwarte-Waldhoff I

subject

Has Abstract

pub_date

1991-12-01 00:00:00

pages

2221-8

issue

12

eissn

0950-9232

issn

1476-5594

journal_volume

6

pub_type

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