In vitro transformation of primary cultures of neonatal BALB/c mouse epidermal cells with ultraviolet-B radiation
Primary epidermal cultures from neonatal BALB/c mice were used to study the carcinogenic effects of ultraviolet radiation in vitro. These cultures were irradiated once through a Falcon plastic dish cover with an FS40 sunlamp (ultraviolet B, lambda approximately 290 to 400 nm) for various lengths of time and maintained for 8 to 12 weeks without subculturing. During this period, most of the cells in the untreated control showed signs of morphological differentiation and eventually died. The cultures irradiated with ultraviolet B radiation also behaved in the same manner except that, in some dishes, small populations of surviving cells began to proliferate and developed into morphologically distinct foci. Seven long-term cell lines were derived from these ultraviolet-irradiated primary epidermal cell cultures. Six of these cell lines produced tumors when injected s.c. into normal and/or immunosuppressed syngeneic recipients. These tumorigenic cell lines lacked definitive characteristics of differentiated epidermal cells, but the cells possessed intermediate junctions, suggesting that they were of epithelial origin. Some of these in vitro-transformed cell lines appeared to be highly antigenic inasmuch as they grew preferentially in immunosuppressed BALB/c mice as compared to their growth in normal syngeneic recipients.
- OSTI ID:
- 5704551
- Journal Information:
- Cancer Res.; (United States), Vol. 41:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANIMAL CELLS
BIOLOGICAL RADIATION EFFECTS
EPIDERMIS
ONCOGENIC TRANSFORMATIONS
RADIOINDUCTION
CARCINOGENESIS
FAR ULTRAVIOLET RADIATION
IN VITRO
MICE
NEONATES
ANIMAL TISSUES
ANIMALS
BIOLOGICAL EFFECTS
BODY
ELECTROMAGNETIC RADIATION
EPITHELIUM
MAMMALS
ORGANS
PATHOGENESIS
RADIATION EFFECTS
RADIATIONS
RODENTS
SKIN
TISSUES
ULTRAVIOLET RADIATION
VERTEBRATES
560121* - Radiation Effects on Cells- External Source- (-1987)