Biomaterial Database

Transforming activity of DNA extracted from BKV-transformed hamster cells after passages in culture. 1986

L Possati, and A Collesi, and C Rosciani, and C Rubini

Primary fetal rat fibroblasts (FRF cells) were transfected with DNA extracted from BKV-transformed hamster kidney cells at low passage after transformation (HKBKlp cells) and at high passage after transformation (HKBKhp cells). Two transformed rat cell lines were obtained, FRF-DNA-HKBKlp cells and FRF-DNA-HKBKhp cells, transformed by DNA extracted from HKBKlp cells and HKBKhp cells, respectively. They were characterized by a number of biological properties and by tumorigenicity and metastatic ability in newborn hamsters. The two transformed FRF cell lines exhibited exactly inverted properties in comparison with HKBK cells, in particular FRF-DNA-HKBKlp cells showed a low level of nuclear T antigen and a diffuse appearance of TSTA at the cell surface, whereas FRF-DNA-HKBKhp cells demonstrated a high level of T antigen and the capping of TSTA in the cell membrane. The tumorigencity and the metastatic ability were greater with FRF-DNA-HKBKlp cells, while FRF-DNA-HKBKhp cells appeared to be less tumorigenic and metastatic in newborn hamsters.

UI	MeSH Term	Description	Entries
D008647	Mesocricetus	A genus in the order Rodentia and family Cricetidae. One species, Mesocricetus auratus or golden hamster is widely used in biomedical research.	Hamsters, Golden,Hamsters, Golden Syrian,Hamsters, Syrian,Mesocricetus auratus,Syrian Golden Hamster,Syrian Hamster,Golden Hamster,Golden Hamster, Syrian,Golden Hamsters,Golden Syrian Hamsters,Hamster, Golden,Hamster, Syrian,Hamster, Syrian Golden,Syrian Hamsters
D002471	Cell Transformation, Neoplastic	Cell changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm, and other attributes conferring the ability to invade, metastasize, and kill.	Neoplastic Transformation, Cell,Neoplastic Cell Transformation,Transformation, Neoplastic Cell,Tumorigenic Transformation,Cell Neoplastic Transformation,Cell Neoplastic Transformations,Cell Transformations, Neoplastic,Neoplastic Cell Transformations,Neoplastic Transformations, Cell,Transformation, Cell Neoplastic,Transformation, Tumorigenic,Transformations, Cell Neoplastic,Transformations, Neoplastic Cell,Transformations, Tumorigenic,Tumorigenic Transformations
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D005814	Genes, Viral	The functional hereditary units of VIRUSES.	Viral Genes,Gene, Viral,Viral Gene
D006224	Cricetinae	A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS.	Cricetus,Hamsters,Hamster
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000951	Antigens, Neoplasm	Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral origin.	Neoplasm Antigens,Tumor Antigen,Tumor Antigens,Antigen, Tumor,Antigens, Tumor
D014162	Transfection	The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.	Transfections
D027382	Polyomaviridae	A family of small, non-enveloped DNA viruses, infecting mainly MAMMALS.	Alphapolyomavirus,Betapolyomavirus,Deltapolyomavirus,Gammapolyomavirus,Alphapolyomaviruses,Betapolyomaviruses,Deltapolyomaviruses,Gammapolyomaviruses
D027383	Papillomaviridae	A family of small, non-enveloped DNA viruses infecting birds and most mammals, especially humans. They are grouped into multiple genera, but the viruses are highly host-species specific and tissue-restricted. They are commonly divided into hundreds of papillomavirus "types", each with specific gene function and gene control regions, despite sequence homology. Human papillomaviruses are found in the genera ALPHAPAPILLOMAVIRUS; BETAPAPILLOMAVIRUS; GAMMAPAPILLOMAVIRUS; and MUPAPILLOMAVIRUS.