There are disclosed therapeutic compositions and methods using isolated nucleic acid molecules encoding a human chemokine beta-11 (Ck beta-11) polypeptide and a human leukocyte adhesion inhibitor-1 (LAI-1) polypeptide (previously termed chemokine .alpha.1 (CK.alpha.1 or CKa-1), a well as Ck beta-11 and/or LAI-1 polypeptides themselves, as are vectors, host cells and recombinant methods for producing the same.