Distal-less homeobox protein 1 (DLX1)

Distal-less homeobox protein 1 (DLX1) is a member of the homeobox transcription factor gene family, closely related to the Drosophila gene Distal-less. DLX1 regulates gene expression critical for craniofacial patterning, differentiation, and survival of inhibitory neurons in the forebrain[1]. It is implicated in major developmental processes, such as limb and appendage formation in vertebrates and neural development, and mediates transcriptional responses downstream of TGF-β superfamily signals[1][4]. In cancer, especially prostate cancer, DLX1 acts as an oncogene, promoting cell proliferation, migration, and metastasis; its expression is upregulated in aggressive and advanced-stage tumors and it serves as a validated non-invasive biomarker for prostate cancer[2]. Beyond cancer, DLX family members contribute to diverse processes including bone formation, neurodevelopment, and possibly hematopoiesis, with deregulation leading to disease[2][4]. There are currently no drugs approved specifically to modulate DLX1 activity, but its central role in embryonic development and neoplasia makes it a subject of interest in biomarker research and potential future therapies.

Other names

DLX1Homeobox protein DLX-1Distal-less homeobox 1

Not applicable for drugs, as no direct DLX1-targeted drugs are currently available; when studied experimentally, abrogation (knockout/inhibition) of DLX1 reduces cancer cell proliferation and metastasis[2].