SLC1A5 and cystic fibrosis: CF airway neutrophils, but not blood neutrophils, from CF patients exhibit increased expression of GLUT1, neutral amino acids transporter 2 (ASCT2) and inorganic phosphate transporter 1 & 2 (PiT1, PiT2) compared to normal neutrophils, suggesting that metabolic adaption processes occur in neutrophils upon their recruitment from blood into CF airway lumen (122).