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Protocol for MicroRNA Transfer into Adult Bone Marrow-derived Hematopoietic Stem Cells to Enable Cell Engineering Combined with Magnetic Targeting

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Improving stem cell mobilization strategies: future directions.

W Bensinger¹, J F DiPersio, J M McCarty

¹Department of Medicine, Division of Oncology, University of Washington School of Medicine, Seattle, WA, USA. wbensing@fhcrc.org

Bone Marrow Transplantation

|January 14, 2009

Summary

This summary is machine-generated.

Mobilizing stem cells for autologous hematopoietic stem cell transplant (auto-HSCT) is crucial for multiple myeloma and lymphoma patients. New methods aim to improve stem cell collection yields without increasing patient toxicity.

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Area of Science:

Hematology
Oncology
Transplantation Medicine

Background:

Autologous hematopoietic stem cell transplantation (auto-HSCT) is a standard treatment for multiple myeloma (MM) and certain lymphomas (NHL).
Current stem cell mobilization strategies using cytokines or chemotherapy have limitations, including suboptimal yields and significant toxicity.
A substantial percentage of patients (5-30%) fail to mobilize sufficient stem cells for transplantation, impacting outcomes.

Purpose of the Study:

To review current stem cell mobilization strategies for auto-HSCT in MM and NHL.
To highlight the limitations of existing methods regarding stem cell yield and patient toxicity.
To explore the potential of novel agents for improving stem cell mobilization.

Main Methods:

Review of existing literature on stem cell mobilization techniques for auto-HSCT.
Analysis of the efficacy and toxicity of cytokine-based and chemotherapy-augmented mobilization regimens.
Discussion of unmet needs and future directions in stem cell mobilization.

Main Results:

Cytokine-only regimens are well-tolerated but yield suboptimal peripheral blood stem cell (PBSC) collections.
Adding myelosuppressive chemotherapy to cytokines improves PBSC yields 2-5 fold but increases toxicity and resource use.
Current methods frequently fail to mobilize adequate stem cells, potentially compromising patient treatment and survival.

Conclusions:

Improved stem cell mobilization strategies are needed to increase auto-HSCT availability and optimize patient outcomes in MM and NHL.
Novel agents combined with cytokines show promise for enhancing PBSC collection without added morbidity.
Optimizing stem cell mobilization can improve engraftment and survival for patients undergoing auto-HSCT.