title: Tumour biology of a breast cancer at least partly reflects the biology of the tissue/epithelial cell of origin at the time of initiation - a hypothesis.
abstract: A hypothesis is presented suggesting that initiation of breast epithelial cell freezes the cell at least partly according to the development/differention of cell at the time of initiation. Tumour biology will mimic the physiology of normal cell development at the time of initiation and this is preserved at least partly onwards. Also preferentially, tumours will develop from the cell type that is proliferating at the time of initiation. This may explain the overrepresentation of different types of histology in breast cancer in relation to age of the woman. The development of each tumour may follow at least partly a distinct pathway of evolution.
authors.affiliation: Department of Oncology, University Hospital, S-221 85, Lund, Sweden. hakan.olsson@onk.lu.se
authors.forename: H
authors.initials: H
authors.lastname: Olsson
mesh_terms: D000367:Age Factors; D017668:Age of Onset; D024682:BRCA2 Protein; D001940:Breast / Q000166:cytology / Q000378:metabolism / Q000473:pathology; D001943:Breast Neoplasms / Q000175:diagnosis / Q000209:etiology / Q000378:metabolism / Q000473:pathology*; D002454:Cell Differentiation; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism / Q000473:pathology*; D005260:Female; D019398:Genes, BRCA1 / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics; D006801:Humans; D008954:Models, Biological; D009363:Neoplasm Proteins / Q000235:genetics; D011379:Prognosis; D012307:Risk Factors; D014157:Transcription Factors / Q000235:genetics
chemical_list: D024682:BRCA2 Protein; D009363:Neoplasm Proteins; D014157:Transcription Factors