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Therapeutic Induction of Tertiary Lymphoid Structures in Cancer Through Stromal Remodeling

期刊

FRONTIERS IN IMMUNOLOGY
卷 12, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2021.674375

关键词

light; LT beta R; tumor; TLS; ICB; vascular normalization

资金

  1. National Health and Medical Research Council of Australia [APP1157240, APP2001120]
  2. Cancer Council Western Australia
  3. Cancer Research Institute Clinic and Laboratory Integration Program (CLIP)
  4. Worldwide Cancer Research
  5. Woodside Energy Fellowship

向作者/读者索取更多资源

Improving the effectiveness of anti-cancer immunotherapy is a major clinical challenge due to the suppressive tumor microenvironment. The presence of tertiary lymphoid structures (TLS) in some human cancers is associated with better prognosis and responsiveness to immune checkpoint blockade. Inducing and shaping TLS in the tumor microenvironment could provide innovative opportunities to enhance immunotherapies.
Improving the effectiveness of anti-cancer immunotherapy remains a major clinical challenge. Cytotoxic T cell infiltration is crucial for immune-mediated tumor rejection, however, the suppressive tumor microenvironment impedes their recruitment, activation, maturation and function. Nevertheless, solid tumors can harbor specialized lymph node vasculature and immune cell clusters that are organized into tertiary lymphoid structures (TLS). These TLS support naive T cell infiltration and intratumoral priming. In many human cancers, their presence is a positive prognostic factor, and importantly, predictive for responsiveness to immune checkpoint blockade. Thus, therapeutic induction of TLS is an attractive concept to boost anti-cancer immunotherapy. However, our understanding of how cancer-associated TLS could be initiated is rudimentary. Exciting new reagents which induce TLS in preclinical cancer models provide mechanistic insights into the exquisite stromal orchestration of TLS formation, a process often associated with a more functional or normalized tumor vasculature and fueled by LIGHT/LT alpha/LT beta, TNF alpha and CC/CXC chemokine signaling. These emerging insights provide innovative opportunities to induce and shape TLS in the tumor microenvironment to improve immunotherapies.

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