Journal: Biomedicines
Article Title: Analysing the Combined Effects of Radiotherapy and Chemokine Receptor 5 Antagonism: Complementary Approaches to Promote T Cell Function and Migration in Oesophageal Adenocarcinoma
doi: 10.3390/biomedicines12040819
Figure Lengend Snippet: Expanded circulating T cells from OAC patients expressed higher levels of CCR5, which was further upregulated on the surface of CD8 + T cells by clinically relevant doses of irradiation. ( a ) PBMCs isolated from treatment−naïve OAC donors ( n = 7) and age—matched HDs ( n = 6) were activated with plate−bound anti−CD3 and anti−CD28 agonists for 72 h, receiving 2 × 1.8 Gy fractions of irradiation (irradiated, IR) on day 1 and day 2, 24 h apart, or were non−irradiated, NIR. The frequencies of T cells in HDs and CDs expressing CCR1 ( b ), CCR5 ( c , d ), and CX 3 CR1 ( e ) were assessed by flow cytometry. The effect of IR on CCR1, CCR5, and CX 3 CR1 expression on T cells from HDs ( f ) and CDs ( g ) was also assessed by flow cytometry and depicted in heat maps shown (% cells expressing). The effect of IR on CCR5 expression on T cells from CDs is displayed in ( h , i ). All analyses were conducted on viable T cells using a zombie dye to exclude dead cells, and fluorescence minus-one controls (FMO) were used for gating analysis. Mann−Whitney tests were used to compare between HD and CD groups. Wilcoxon signed-rank tests were used to compare the effect of NIR with IR in the same donors. * p < 0.05, ** p < 0.01.
Article Snippet: For experiments that included treatment with antagonists, in the last 24 h of the T cell activation process, PBMCs were treated with 1 nM CCR1 antagonist J113863 (Axon MedChem, Reston, VA, USA), 80 μM of CCR5 antagonist Maraviroc (Axon MedChem, Reston, VA, USA), 245 nM CX 3 CR1 antagonist AZD8798 (Axon MedChem, Reston, VA, USA), or vehicle control (0.01% DMSO).
Techniques: Irradiation, Isolation, Expressing, Flow Cytometry, Fluorescence, MANN-WHITNEY