MAPK8IP1 and cervical carcinoma: This led us first to determine the subcellular location of the endogenous JIP1 protein in two cell lines; Cos1 and HeLa (human cervical carcinoma cell line), given that JIP1 is the family member more ubiquitously expressed, although is expression is more abundant in brain, testis, lung, kidney and pancreas [20], [58].