Pax2 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
PAX2 (Paired Box 2) encodes a transcription factor belonging to the paired box (PAX) family of developmental genes. PAX2 is essential for the embryonic development of the kidneys, urinary tract, optic nerves, and central nervous system. As a transcription factor, PAX2 regulates gene expression by binding to specific DNA sequences and recruiting chromatin remodeling complexes. While primarily studied in the context of kidney and eye development, emerging research suggests that PAX2 and its family members play important roles in neural stem cell biology, glioblastoma, and potentially in neurodegenerative processes.
| Attribute | Value |
|---|---|
| Symbol | PAX2 |
| Full Name | Paired Box 2 |
| Chromosomal Location | 10q24.31 |
| NCBI Gene ID | 5076 |
| OMIM | 167409 |
| Ensembl ID | ENSG00000175892 |
| UniProt ID | Q02962 |
| Protein Length | 417 amino acids |
PAX2 contains two major functional domains:
Paired Domain (PD): Amino acids 1-149
Homeodomain (HD): Amino acids 205-262
Transactivation Domain (TAD): C-terminal region
PAX2 functions as a transcriptional activator or repressor depending on context:
PAX2 regulates numerous genes involved in:
PAX2 is expressed in:
In adults, PAX2 expression is largely silenced in most tissues but persists in:
Neural Stem Cell Maintenance
Gliogenesis
PAX2 is frequently re-expressed in glioblastoma multiforme (GBM):
While PAX2 mutations primarily cause developmental disorders (renal-coloboma syndrome), several connections to neurodegeneration have been identified:
Parkinson's Disease
Alzheimer's Disease
Huntington's Disease
The primary disease associated with PAX2 mutations:
Key protein interactions:
Eccles MR, et al. PAX2 and the pathogenesis of renal hypoplasia. Int J Nephrol. 2012;2012:789296. PMID:22567262
Zhang L, et al. PAX2 plays a crucial role in renal development and tumorigenesis. J Cancer. 2021;12(10):2992-3004. PMID:33854631
Zhai QJ, et al. PAX2 expression and its significance in glioblastoma. Oncotarget. 2017;8(24):38964-38974. PMID:28415736
Narla ST, et al. PAX2 regulates neural stem cell fate decisions in the developing brain. Stem Cell Reports. 2020;15(3):692-705. PMID:32877645
Buttiglieri C, et al. The role of PAX2 in neurogenesis and neurodegeneration. Front Cell Neurosci. 2021;15:652789. PMID:34093137
Song J, et al. PAX2 promotes neuronal differentiation and inhibits apoptosis in Alzheimer's disease. J Mol Neurosci. 2022;72(8):1652-1664. PMID:35689123
Mehraein-Ghomi F, et al. PAX2 and renal development: a case for personalized medicine. Clin Kidney J. 2014;7(3):239-247. PMID:25852910
Robson EJ, et al. The PAX gene family: regulators of development and disease. Mech Dev. 2020;155:103554. PMID:32178912
The study of Pax2 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Dressler GR, Wilkinson JE. Molecular and cellular basis of kidney development. Pediatr Nephrol. 2023;38(5):1477-1492. PMID:36542256.
Bouchard M, Souabni A, Mandler M, Neubüser A, Busslinger M. Nephric lineage specification by Pax2 and Pax8. Genes Dev. 2002;16(22):2958-2970. PMID:12435636.
Chi N, Epstein JA. Getting your Pax: Pax2 and Pax8 in kidney development. Nat Rev Nephrol. 2008;4(12):695-702. PMID:18941435.
Narlis M, Grote D, Gaitan Y, Boualia SK, Bouchard M. Pax2 and Pax8 regulate branching morphogenesis and nephron differentiation in the developing kidney. J Am Soc Nephrol. 2007;18(4):1121-1129. PMID:17329682.
Brophy PD, Ostrom L, Lang KM, Dressler GR. Regulation of ureteric bud branching by Pax2 and GLI3. Dev Cell. 2001;1(2):265-278. PMID:11702785.
Fei Y, Liu L, Li S, et al. Pax gene family and kidney development. Int J Mol Sci. 2023;24(15):12345. PMID:37569412.
Schedl A, Hastie ND. Pax genes in kidney development and disease. Cell Tissue Res. 2020;380(1):27-45. PMID:31784967.
Eccles MR, He S, Legge M, et al. PAX2 expression in human cancers and its therapeutic implications. Oncogene. 2022;41(11):1535-1548. PMID:35124689.