Bone marrow stromal cells induce chromatin remodeling in multiple myeloma cells leading to transcriptional changes

Moritz Binder, Raphael E. Szalat, Srikanth Talluri, Mariateresa Fulciniti, Hervé Avet-Loiseau, Giovanni Parmigiani, Mehmet K. Samur () and Nikhil C. Munshi ()
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Moritz Binder: Dana Farber Cancer Institute
Raphael E. Szalat: Dana Farber Cancer Institute
Srikanth Talluri: Dana Farber Cancer Institute
Mariateresa Fulciniti: Dana Farber Cancer Institute
Hervé Avet-Loiseau: Institut National de la Santé
Giovanni Parmigiani: Dana Farber Cancer Institute
Mehmet K. Samur: Dana Farber Cancer Institute
Nikhil C. Munshi: Dana Farber Cancer Institute

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract The natural history of multiple myeloma is characterized by its localization to the bone marrow and its interaction with bone marrow stromal cells. The bone marrow stromal cells provide growth and survival signals, thereby promoting the development of drug resistance. Here, we show that the interaction between bone marrow stromal cells and myeloma cells (using human cell lines) induces chromatin remodeling of cis-regulatory elements and is associated with changes in the expression of genes involved in the cell migration and cytokine signaling. The expression of genes involved in these stromal interactions are observed in extramedullary disease in patients with myeloma and provides the rationale for survival of myeloma cells outside of the bone marrow microenvironment. Expression of these stromal interaction genes is also observed in a subset of patients with newly diagnosed myeloma and are akin to the transcriptional program of extramedullary disease. The presence of such adverse stromal interactions in newly diagnosed myeloma is associated with accelerated disease dissemination, predicts the early development of therapeutic resistance, and is of independent prognostic significance. These stromal cell induced transcriptomic and epigenomic changes both predict long-term outcomes and identify therapeutic targets in the tumor microenvironment for the development of novel therapeutic approaches.

Date: 2024
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DOI: 10.1038/s41467-024-47793-5

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