title: Direct and indirect contribution of bone marrow-derived cells to cancer.
abstract: Stromal-epithelial interactions may control the growth and initiation of cancers. Here, we not only test the hypothesis that bone marrow-derived cells may effect development of cancers arising from other tissue cells by forming tumor stroma but also that sarcomas may arise by transformation of stem cells from the bone marrow and epithelial cancers may arise by transdifferentiation of bone marrow stem cells to epithelial cancers. Lethally irradiated female FVB/N mice were restored with bone marrow (BM) transplants from a male transgenic mouse carrying the polyoma middle T-oncoprotein under the control of the mouse mammary tumor virus promoter (MMTV-PyMT) and followed for development of lesions. All of 8 lethally irradiated female FVB/N recipient mice, restored with BM transplants from a male MMTV-PyMT transgenic mouse, developed Y-chromosome negative (Y-) cancers of various organs surrounded by Y+ stroma. One of the female FVB/N recipient mice also developed fibrosarcoma and 1, a diploid breast adenocarcinoma containing Y chromosomes. In contrast, only 1 of 12 control female mice restored with normal male BM developed a tumor (lymphoma) during the same time period. These results indicate not only that the transgenic BM-derived stromal cells may indirectly contribute to development of tumors in recipient mice but also that sarcomas may arise by transformation of BM stem cells and that breast cancers arise by transdifferentiation of BM stem cells, presumably by mesenchymal-epithelial transition.
authors.affiliation: Department of Molecular Medicine, Wadsworth Center, New York State Department of Health, Albany, NY 12201, USA.
authors.forename: Ian
authors.initials: I
authors.lastname: Guest
authors.forename: Zoran
authors.initials: Z
authors.lastname: Ilic
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.forename: Denise
authors.initials: D
authors.lastname: Grant
authors.forename: Gennadi
authors.initials: G
authors.lastname: Glinsky
authors.forename: Stewart
authors.initials: S
authors.lastname: Sell
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D002471:Cell Transformation, Neoplastic; D005260:Female; D005347:Fibroblasts; D005434:Flow Cytometry; D005923:Glomerulosclerosis, Focal Segmental / Q000473:pathology; D006412:Hematopoietic Stem Cells; D007150:Immunohistochemistry; D017404:In Situ Hybridization, Fluorescence; D008223:Lymphoma / Q000473:pathology; D008297:Male; D008325:Mammary Neoplasms, Experimental / Q000235:genetics / Q000473:pathology*; D059630:Mesenchymal Stem Cells; D051379:Mice; D008815:Mice, Inbred Strains; D008822:Mice, Transgenic; D009369:Neoplasms / Q000473:pathology; D020133:Reverse Transcriptase Polymerase Chain Reaction; D033581:Stem Cell Transplantation; D014998:Y Chromosome