scholarly journals Hypoxia and Macrophages Act in Concert Towards a Beneficial Outcome in Colon Cancer

Cancers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 818
Author(s):  
Flávia Martins ◽  
Rosa Oliveira ◽  
Bruno Cavadas ◽  
Filipe Pinto ◽  
Ana Patrícia Cardoso ◽  
...  

In colon cancer, the prognostic value of macrophages is controversial, and it is still unknown how hypoxia modulates macrophage–cancer cell crosstalk. To unravel this, co-cultures of human primary macrophages and colon cancer cells were performed at 20% and 1% O2, followed by characterization of both cellular components. Different colon cancer patient cohorts were analyzed for hypoxia and immune markers, and their association with patient overall survival was established. A positive correlation between HIF1A and CD68 in colon cancer patients was identified but, unexpectedly, in cases with higher macrophage infiltration, HIF1A expression was associated with a better prognosis, in contrast to breast, gastric, and lung cancers. Under hypoxia, co-cultures’ secretome indicated a shift towards a pro-inflammatory phenotype. These alterations occurred along with increased macrophage phagocytic activity and decreased SIRPα expression. Cancer cells were more invasive and exhibited higher CD47 expression. We hypothesize that the better prognosis associated with HIF1AHighCD68High tumors could occur due to macrophagic pro-inflammatory pressure. Indeed, we found that tumors HIF1AHighCD68High expressed increased levels of CD8A, which is positively correlated with HIF1A. In conclusion, we show that in colon cancer, hypoxia drives macrophages into a pro-inflammatory phenotype, concomitant with increased infiltration of anti-tumor immune cells, favoring better disease outcome.

Talanta ◽  
2021 ◽  
Vol 222 ◽  
pp. 121441
Author(s):  
Fuentes-Vélez Susana ◽  
Fagoonee Sharmila ◽  
Sanginario Alessandro ◽  
Gallo Valentina ◽  
Riganti Chiara ◽  
...  

2015 ◽  
Vol 75 (5) ◽  
pp. 892-901 ◽  
Author(s):  
Laure Cayrefourcq ◽  
Thibault Mazard ◽  
Simon Joosse ◽  
Jérôme Solassol ◽  
Jeanne Ramos ◽  
...  

2015 ◽  
Vol 115 ◽  
pp. 139-145 ◽  
Author(s):  
Elizângela A.M.S. Almeida ◽  
Suelen P. Facchi ◽  
Alessandro F. Martins ◽  
Samara Nocchi ◽  
Ivânia T.A. Schuquel ◽  
...  

2008 ◽  
Vol 147 (2) ◽  
pp. 276-281 ◽  
Author(s):  
Ashwani Rajput ◽  
Ivan Dominguez San Martin ◽  
Rebecca Rose ◽  
Alexander Beko ◽  
Charles LeVea ◽  
...  

2013 ◽  
Author(s):  
Martin Lange ◽  
Dirk Schumacher ◽  
Thomas Hauling ◽  
Christian Regenbrecht ◽  
Oliver Politz ◽  
...  

FEBS Journal ◽  
2012 ◽  
Vol 279 (17) ◽  
pp. 3022-3032 ◽  
Author(s):  
Jaime Tomé-Amat ◽  
Aida Menéndez-Méndez ◽  
Lucía García-Ortega ◽  
Carl A. Batt ◽  
Mercedes Oñaderra ◽  
...  

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