CSDE1 (Cold shock domain containing protein E1) also known as UNR is a highly conserved RNA-binding protein containing five cold-shock domains. CSDE1 is mostly localized in the cytoplasm where it interacts with distinct protein complexes involved in the post-transcriptional regulation of numerous mRNAs in a dynamic and complex manner. CSDE1 plays a role in maintaining the undifferentiated state of human embryonic stem cells (hESCs), and its loss results in accelerated neural differentiation and neurogenesis, partially via post-transcriptional regulation of fatty acid binding protein 7 (FABP7) and vimentin (VIM) mRNAs.