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Hypoxia and acidity regulate immune checkpoint molecule and IFN-β expression in non-small cell lung cancer cell lines

Overview of attention for article published in Journal of Receptor & Signal Transduction Research, April 2023
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Title
Hypoxia and acidity regulate immune checkpoint molecule and IFN-β expression in non-small cell lung cancer cell lines
Published in
Journal of Receptor & Signal Transduction Research, April 2023
DOI 10.1080/10799893.2023.2204944
Pubmed ID
Authors

Achilleas G. Mitrakas, Alexandra Giatromanolaki, Michael I. Koukourakis

Abstract

Non-small cell lung cancer (NSCLC) is one of the most lethal tumors in humans. Immunotherapy with immune checkpoint inhibitors (ICIs) has revolutionized the treatment of patients with advanced diseases. Tumor microenvironment conditions like hypoxia and low pH may compromise the efficacy of ICIs. We report the effect of hypoxia and acidity on the expression levels of the major checkpoint molecules, namely PD-L1, CD80, and CD47, in the A549 and H1299 NSCLC cell lines. Hypoxia induces PD-L1 protein and mRNA expression, represses CD80 mRNA levels, and enhances IFNβ protein expression. An opposite effect was noticed when cells were exposed to acidic conditions. Hypoxia-induced the CD47 molecule at protein and mRNA levels. It is concluded that hypoxia and acidity are important regulators of the expression of PD-L1 and CD80 immune checkpoint molecules. Acidity contributes to the suppression of the interferon type I pathway. These findings suggest that hypoxia and acidity assist cancer cells in the escape from immune surveillance through direct effects on cancer cells' ability to present immune checkpoint molecules and release type I interferons. Targeting hypoxia and acidity may enhance the activity of ICIs in NSCLC.

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Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 April 2023.
All research outputs
#19,962,154
of 25,394,764 outputs
Outputs from Journal of Receptor & Signal Transduction Research
#232
of 528 outputs
Outputs of similar age
#289,397
of 410,075 outputs
Outputs of similar age from Journal of Receptor & Signal Transduction Research
#1
of 1 outputs
Altmetric has tracked 25,394,764 research outputs across all sources so far. This one is in the 18th percentile – i.e., 18% of other outputs scored the same or lower than it.
So far Altmetric has tracked 528 research outputs from this source. They receive a mean Attention Score of 2.0. This one has gotten more attention than average, scoring higher than 52% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 410,075 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 25th percentile – i.e., 25% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them