Cited by 174Chemokine receptors and signalingImmunotherapy and Immune ResponsesVirus-based gene therapy research

Intra-tumoral delivery of CXCL11 via a vaccinia virus, but not by modified T cells, enhances the efficacy of adoptive T cell therapy and vaccines

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Moon, Edmund K., Wang, Liang-Chuan S., Bekdache, Kheng, Lynn, Rachel C., Lo, Albert, Thorne, Stephen H., Albelda, Steven M.·2018·OncoImmunology

Abstract

T cell trafficking into tumors depends on a "match" between chemokine receptors on effector cells (e.g., CXCR3 and CCR5) and tumor-secreted chemokines. There is often a chemokine/chemokine receptor "mismatch", with tumors producing minute amounts of chemokines, resulting in inefficient targeting of effectors to tumors. We aimed to alter tumors to produce higher levels of CXCL11, a CXCR3 ligand, to attract more effector cells following immunotherapy. Mice bearing established subcutaneous tumors were studied. In our first approach, we used modified chimeric antigen receptor (CAR)-transduced human T cells to deliver CXCL11 (CAR/CXCL11) into tumors. In our second approach, we intravenously (iv) administered a modified oncolytic vaccinia virus (VV) engineered to produce CXCL11 (VV.CXCL11). The effect of these treatments on T cell trafficking into the tumors and anti-tumor efficacy after subsequent CAR T cell injections or anti-tumor vaccines was determined. CAR/CXCL11 and VV.CXCL11 significantly increased CXCL11 protein levels within tumors. For CAR/CXCL11, injection of a subsequent dose of CAR T cells did not result in increased intra-tumoral trafficking, and appeared to decrease the function of the injected CAR T cells. In contrast, VV.CXCL11 increased the number of total and antigen-specific T cells within tumors after CAR T cell injection or vaccination and significantly enhanced anti-tumor efficacy. Both approaches were successful in increasing CXCL11 levels within the tumors; however, only the vaccinia approach was successful in recruiting T cells and augmenting anti-tumor efficacy. VV.CXCL11 should be considered as a potential approach to augment adoptive T cell transfer or vaccine immunotherapy.

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Authors
Moon, E. K., Wang, L.-C. S., Bekdache, K., Lynn, R. C., Lo, A., Thorne, S. H., & Albelda, S. M.
Affiliations
  • University of Pennsylvania (US)
  • University of Pittsburgh (US)
  • ,
Venue
OncoImmunology
Published
2018-01-09
Volume
7
Issue
3
Pages
e1395997-e1395997
ISSN
  • 2162-4011 (ISSN-L)
  • 2162-402X
OpenAlex
W2780294317
Cited by
174
References
49
Citations by year
2026: 19 · 2025: 22 · 2024: 17 · 2023: 21 · 2022: 24 · 2021: 28 · 2020: 27 · 2019: 12 · 2018: 4
FWCI
5.18
Type
journal article
Language
en
Open access
Locations
  • OncoImmunology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
NCI/NIH (P01 CA66726)
Topics
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
Keywords
CXCL11, oncolytic vaccinia virus, chimeric antigen receptor T cells, adoptive T cell therapy, cancer vaccines, T cell migration, CXCR3, antitumor immunity

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