ArticleTumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine2012
Tumor-derived mesenchymal stem cells and orthotopic site increase the tumor initiation potential of putative mouse mammary cancer stem cells derived from MMTV-PyMT mice.
Article in Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 10 citations in OpenAlex.
- Annexin A1 Is Required for Efficient Tumor Initiation and Cancer Stem Cell Maintenance in a Model of Human Breast Cancer.Cancers · 2021Article
- Genomics-Guided Drawing of Molecular and Pathophysiological Components of Malignant Regulatory Signatures Reveals a Pivotal Role in Human Diseases of Stem Cell-Associated Retroviral Sequences and Functionally-Active hESC Enhancers.Frontiers in oncology · 2021Article
- Microvesicle removal of anticancer drugs contributes to drug resistance in human pancreatic cancer cells.Oncotarget · 2016Article
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7 authors at 2 institutions in 1 country.
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Abstract
The ability to transplant mammary cancer stem cells, identified by the phenotype CD24(+)CD29(+)CD49f(+)Sca-1(low), is dependent on the microenvironment in which the cells are placed. Using the MMTV-PyMT mouse model of mammary cancer, we now report two methods of tumor growth enhancement: contributions of tumor stroma in the form of tumor-derived mesenchymal stem cells and orthotopic vs. heterotopic transplantation sites. To support evidence of stem cell function, tumor-derived mesenchymal stem cells differentiated into adipocyte- and osteocyte-like cells after culture in specific medium. Co-injection of tumor-initiating cells with tumor-derived mesenchymal stem cells significantly increased tumor initiation compared to subcutaneous injection of TICs alone; co-injection also allowed tumor initiation with a single TIC. Interestingly, we observed the formation of sarcomas after co-injections of tumor-derived mesenchymal stem cells or mouse embryonic fibroblasts with TICs; sarcomas are not observed in spontaneous MMTV-PyMT tumors and rarely observed in injections of TICs alone. Tumor initiation was also significantly increased in the orthotopic injection site compared to heterotopic injections. We conclude that tumor stroma and orthotopic sites both enhance tumor initiation by mammary cancer stem cells.
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