Activation of insulin like growth factor 1 receptor (IGF 1R) promotes growth of colorectal cancer through triggering the MEX3A mediated degradation of RIG I ScienceDirect IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society IGF 1 LR3 Research Overview IGF 1 LR3 is a modified insulin like growth factor analog currently being studied for its interaction with IGF 1 receptor pathways. Research has focused on its role in cellular IGF 1 LR3 Huma Peptide