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Moving disease biology from the laboratory to the clinic
1Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, 44 Binney Street, Boston, MA 02115, USA.
Abstract:
To address the urgent need for novel therapies for multiple myeloma (MM), long-term research efforts have characterized the mechanisms whereby MM cells home to the bone marrow and adhere to bone marrow stromal cells and extracellular matrix proteins. Research also characterizes the functional sequelae of this binding to identify targets for novel therapies. This article describes the mechanisms by which MM cells home to bone marrow and adhere to bone marrow stromal cells and extracellular matrix proteins, and describes the functional sequelae of this binding. Adhesion molecules that mediate MM cell binding to bone marrow stromal cells are identified, and the growth and survival advantage conferred by this binding is discussed. The biologic significance of cytokines in MM pathogenesis and the signaling cascades mediating their effects are delineated. Apoptotic and targeted therapeutic strategies to overcome drug resistance based on interrupting growth or triggering apoptotic-signaling cascades also are identified, providing the basis for novel biologically based therapies, such as thalidomide/immunomodulatory drugs and proteasome inhibitor PS-341.
Insights
Novel therapies for multiple myeloma (MM) are explored by examining how MM cells interact with the bone marrow microenvironment. Understanding these interactions reveals targets for new treatments, including immunomodulatory drugs and proteasome inhibitors.
Area of Science:
- Hematology
- Oncology
- Cell Biology
Background:
- Multiple myeloma (MM) cell adhesion to the bone marrow microenvironment is crucial for disease progression.
- Understanding MM cell homing and adhesion mechanisms is vital for developing targeted therapies.
Purpose of the Study:
- To elucidate the mechanisms of multiple myeloma cell homing and adhesion within the bone marrow.
- To identify adhesion molecules and signaling pathways involved in MM pathogenesis.
- To explore novel therapeutic strategies targeting MM cell survival and drug resistance.
Main Methods:
- Review of existing research on MM cell adhesion and bone marrow microenvironment interactions.
- Identification of key adhesion molecules and cytokines.
- Analysis of signaling cascades mediating MM cell growth and survival.
Main Results:
- MM cell adhesion to bone marrow stromal cells and extracellular matrix proteins confers a survival advantage.
- Specific adhesion molecules mediating MM cell binding have been identified.
- The role of cytokines and their signaling pathways in MM pathogenesis is delineated.
Conclusions:
- Targeting MM cell adhesion and survival pathways offers a basis for novel therapies.
- Biologically based therapies like immunomodulatory drugs and proteasome inhibitors show promise for overcoming drug resistance in MM.