passages.id: split_1_test_1561_passage
passages.type: progene_text
passages.text: In summary , in A549 cells , Ku antigen is induced in response to the cytokines , IL-13 and - 4 , and a 29 bp region within the - 353 to - 304 bp region of the 15-LO-1 promoter is required for its binding and subsequent induction of 15-LO-1 gene expression .