» Articles » PMID: 29894689

Non-conventional Inhibitory CD4Foxp3PD-1 T Cells As a Biomarker of Immune Checkpoint Blockade Activity

Abstract

A significant proportion of cancer patients do not respond to immune checkpoint blockade. To better understand the molecular mechanisms underlying these treatments, we explored the role of CD4Foxp3 T cells expressing PD-1 (4PD1) and observed that 4PD1 accumulate intratumorally as a function of tumor burden. Interestingly, CTLA-4 blockade promotes intratumoral and peripheral 4PD1 increases in a dose-dependent manner, while combination with PD-1 blockade mitigates this effect and improves anti-tumor activity. We found that lack of effective 4PD1 reduction after anti-PD-1 correlates with poor prognosis. Mechanistically, we provide evidence that mouse and human circulating and intra-tumor 4PD1 inhibit T cell functions in a PD-1/PD-L1 dependent fashion and resemble follicular helper T cell (T)-like cells. Accordingly, anti-CTLA-4 activity is improved in T deficient mice.

Citing Articles

Biomarkers for immunotherapy resistance in non-small cell lung cancer.

Rother C, John T, Wong A Front Oncol. 2025; 14:1489977.

PMID: 39749035 PMC: 11693593. DOI: 10.3389/fonc.2024.1489977.


Pharmacologic LDH inhibition redirects intratumoral glucose uptake and improves antitumor immunity in solid tumor models.

Verma S, Budhu S, Serganova I, Dong L, Mangarin L, Khan J J Clin Invest. 2024; 134(17).

PMID: 39225102 PMC: 11364391. DOI: 10.1172/JCI177606.


Immunotherapy in melanoma: advances, pitfalls, and future perspectives.

Sorino C, Iezzi S, Ciuffreda L, Falcone I Front Mol Biosci. 2024; 11:1403021.

PMID: 39086722 PMC: 11289331. DOI: 10.3389/fmolb.2024.1403021.


Mechanisms, combination therapy, and biomarkers in cancer immunotherapy resistance.

Yang M, Cui M, Sun Y, Liu S, Jiang W Cell Commun Signal. 2024; 22(1):338.

PMID: 38898505 PMC: 11186190. DOI: 10.1186/s12964-024-01711-w.


Immunomodulatory Precision: A Narrative Review Exploring the Critical Role of Immune Checkpoint Inhibitors in Cancer Treatment.

Qiu J, Cheng Z, Jiang Z, Gan L, Zhang Z, Xie Z Int J Mol Sci. 2024; 25(10).

PMID: 38791528 PMC: 11122264. DOI: 10.3390/ijms25105490.


References
1.
Dong H, Strome S, Salomao D, Tamura H, Hirano F, Flies D . Tumor-associated B7-H1 promotes T-cell apoptosis: a potential mechanism of immune evasion. Nat Med. 2002; 8(8):793-800. DOI: 10.1038/nm730. View

2.
Iwai Y, Ishida M, Tanaka Y, Okazaki T, Honjo T, Minato N . Involvement of PD-L1 on tumor cells in the escape from host immune system and tumor immunotherapy by PD-L1 blockade. Proc Natl Acad Sci U S A. 2002; 99(19):12293-7. PMC: 129438. DOI: 10.1073/pnas.192461099. View

3.
Pollock P, Cohen-Solal K, Sood R, Namkoong J, Martino J, Koganti A . Melanoma mouse model implicates metabotropic glutamate signaling in melanocytic neoplasia. Nat Genet. 2003; 34(1):108-12. DOI: 10.1038/ng1148. View

4.
Strome S, Dong H, Tamura H, Voss S, Flies D, Tamada K . B7-H1 blockade augments adoptive T-cell immunotherapy for squamous cell carcinoma. Cancer Res. 2003; 63(19):6501-5. View

5.
Pentcheva-Hoang T, Egen J, Wojnoonski K, Allison J . B7-1 and B7-2 selectively recruit CTLA-4 and CD28 to the immunological synapse. Immunity. 2004; 21(3):401-13. DOI: 10.1016/j.immuni.2004.06.017. View