Strategies to enhance monoclonal antibody uptake and distribution in solid tumors

Area of Science:

• Oncology
• Immunotherapy
• Drug Delivery

Background:

• Monoclonal antibody (mAb) therapies are crucial in cancer treatment, but their efficacy against solid tumors remains limited.
• Solid tumors present unique physiological challenges, including aberrant vasculature and dense extracellular matrices, hindering mAb penetration.
• High antigen expression and turnover can also impede mAb distribution within tumors.

Purpose of the Study:

• To review the barriers limiting monoclonal antibody (mAb) uptake and distribution in solid tumors.
• To discuss preclinical strategies aimed at overcoming these barriers and improving mAb delivery.

Main Methods:

• Literature review of preclinical studies on mAb delivery in solid tumors.
• Analysis of tumor physiology and its impact on mAb transport.
• Overview of strategies to enhance mAb penetration and distribution.

Main Results:

• Aberrant tumor vasculature and dense extracellular matrix significantly restrict mAb transport.
• Perivascular cell binding and antigen turnover further limit mAb distribution.
• Numerous preclinical strategies have been investigated to improve mAb delivery.

Conclusions:

• Understanding solid tumor physiology is critical for developing effective mAb therapies.
• Preclinical strategies show promise in overcoming delivery barriers, but clinical translation is needed.
• Further research is required to enhance mAb efficacy in solid tumors.