CAR-T cell technologies that interact with the tumour microenvironment in solid tumours.

Area of Science:

• Immunotherapy
• Oncology
• Cellular Therapy

Background:

• Chimeric antigen receptor (CAR) T-cells are effective against hematological malignancies.
• CAR T-cell therapy has limited success in treating solid tumors.
• Challenges include target selection, T-cell infiltration, and the tumor microenvironment.

Purpose of the Study:

• To review recent advances in CAR T-cell technology for solid tumors.
• To address challenges in CAR T-cell therapy for solid tumors.
• To explore strategies for improving CAR T-cell efficacy in solid tumors.

Main Methods:

• Literature review of PubMed database from 1987 to present.
• Focus on studies detailing CAR T-cell engineering for solid tumors.
• Analysis of strategies for tumor recruitment, infiltration, and overcoming immunosuppression.

Main Results:

• CAR T-cells can be engineered with "armoring" strategies.
• These strategies enhance trafficking to and infiltration of solid tumors.
• Reversal of suppressive immune checkpoints is a key advancement.

Conclusions:

• CAR T-cell therapy holds potential for solid tumors with further engineering.
• Advanced strategies are crucial for overcoming solid tumor-specific challenges.
• Future research should focus on optimizing CAR T-cells for solid tumor microenvironments.