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Updated: Nov 1, 2025

An Organotypic High Throughput System for Characterization of Drug Sensitivity of Primary Multiple Myeloma Cells
Published on: July 15, 2015
Drug and Solute Transporters in Mediating Resistance to Novel Therapeutics in Multiple Myeloma
Rachel L Mynott1, Craig T Wallington-Beddoe1,2,3,4
1College of Medicine and Public Health, Flinders University, Bedford Park, South Australia 5042, Australia.
Abstract:
Multiple myeloma remains an incurable malignancy of plasma cells. Novel therapies, notably proteasome inhibitors and immunomodulatory drugs, have improved the survival of multiple myeloma patients; however, patients either present with, or develop resistance to, these therapies. Resistance to traditional chemotherapeutic agents can be caused by cellular drug efflux via adenosine triphosphate (ATP)-binding cassette (ABC) transporters, but it is still not clear whether these transporters mediate resistance to proteasome inhibitors and immunomodulatory drugs in multiple myeloma. Solute carrier (SLC) transporters also play a role in cancer drug resistance due to changes in cell homeostasis caused by their abnormal expression and changes in the solutes they transport. In this review, we evaluate resistance to novel therapies used to treat multiple myeloma, as mediated by drug and solute transporters.
Insights
Multiple myeloma treatment resistance is a major challenge. This review explores how drug transporters, like ATP-binding cassette and solute carrier transporters, contribute to resistance against novel therapies in multiple myeloma.
Area of Science:
- Hematology
- Oncology
- Molecular Biology
Background:
- Multiple myeloma is an incurable plasma cell cancer.
- Novel therapies like proteasome inhibitors and immunomodulatory drugs improve survival but face resistance.
- Mechanisms of resistance to traditional chemotherapy, involving ATP-binding cassette transporters, are known, but their role in novel therapy resistance is unclear.
Purpose of the Study:
- To review the role of drug and solute transporters in mediating resistance to novel therapies for multiple myeloma.
- To evaluate the contribution of ATP-binding cassette and solute carrier transporters to treatment resistance.
Main Methods:
- Literature review of studies on multiple myeloma, drug resistance, and transporter proteins.
- Analysis of existing data on the expression and function of ATP-binding cassette and solute carrier transporters in multiple myeloma cells.
- Evaluation of the impact of these transporters on response to proteasome inhibitors and immunomodulatory drugs.
Main Results:
- ATP-binding cassette transporters may contribute to resistance against novel multiple myeloma therapies.
- Solute carrier transporters are implicated in cancer drug resistance through altered cell homeostasis.
- Abnormal expression and solute transport by SLC transporters can influence multiple myeloma cell drug sensitivity.
Conclusions:
- Transporter proteins, including ABC and SLC families, are critical factors in multiple myeloma drug resistance.
- Understanding transporter-mediated resistance is essential for developing strategies to overcome treatment failure.
- Targeting specific transporters may offer new therapeutic avenues for overcoming resistance in multiple myeloma.
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