Abstract
Blood cancers are a type of liquid tumor which means cancer is present in the body fluid. Multiple myeloma, leukemia, and lymphoma are the three common types of blood cancers. Chemotherapy is the major therapy of blood cancers by systemic administration of anticancer agents into the blood. However, a high incidence of relapse often happens, due to the low efficiency of the anticancer agents that accumulate in the tumor site, and therefore lead to a low survival rate of patients. This indicates an urgent need for a targeted drug delivery system to improve the safety and efficacy of therapeutics for blood cancers. In this review, we describe the current targeting strategies for blood cancers and recently investigated and approved drug delivery system formulations for blood cancers. In addition, we also discuss current challenges in the application of drug delivery systems for treating blood cancers.
Highlights
Cancers are one of the leading causes of death in the world [1]
The representative images show the accumulation of the nanoparticles in the tumor over time; (d,e) in vivo efficacy of CD38pepand CD138pep-targeted nanoparticles loaded with prodrug doxorubicin
Neovascularization is always associated with poor prognosis in most blood cancers including acute myeloid leukemia, multiple myeloma, acute lymphatic leukemia, chronic lymphatic leukemia, and Burkett’s lymphoma [39]
Summary
Cancers are one of the leading causes of death in the world [1] Unlike solid tumors such as those in organs, blood cancers (including multiple myeloma, leukemia, and lymphoma) form in the bone marrow or in the lymphatic system [2,3]. Many chemotherapeutic drugs are clinically available for the treatment of blood cancers, there are no curative treatment approaches in clinical practice for these types of cancers due to the inevitable aggravation of blood cancers and bone metastasis [5]. Different types of nanoparticles have received considerable attention for the treatment of various types of solid tumors, leading to several successful drug delivery systems that have entered clinical practice. Most of them have been done in solid tumors and few works have been done to develop drug delivery systems for the treatment of blood cancers.
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