Abstract
Breast cancer cells metastasize to the bone marrow before a primary tumor is detected. Most micrometastases die in this hostile microenvironment, but some survive and enter a state of dormancy and chemoresistance due to their close interaction with cells in the bone marrow hematopoietic niche. Over many years, some of the cells reawaken and result in metastatic disease that cannot be cured. Analyzing the cellular and molecular interactions between cancer and bone marrow niche cells requires relevant models that can be manipulated and studied. Generation of bone marrow stromacultures in vitro permits the formation of cellular monolayers upon which breast cancer cells can be co-cultivated and their behavior interrogated using a variety of techniques. This manuscript describes the basic techniques for generating bone marrow stromal monolayers, co-incubating cancer cells and determining the effects on cancer cell proliferation and molecular signaling.
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