Zerumbone, NF-kappaB inhibitor

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Gli2 also known as GLI family zinc finger 2 is a transcription factor with a molecular mass of approximately 160 kDa. It is an important component of the Hedgehog (Hh) signaling pathway. Gli2 primarily resides in the cytoplasm and migrates to the nucleus upon activation. Expression of Gli2 is widespread but most notable in developing tissues and adult brain. In the nucleus it regulates transcription by binding to specific DNA sequences.

Biological function summary

Gli2 acts as an activator or repressor of gene expression depending on the cellular context. It forms part of the Gli family of transcription factors playing a significant role in cellular growth differentiation and tissue patterning. While not usually part of stable protein complexes Gli2 interacts transiently with other proteins such as Suppressor of Fused (SuFu) to regulate its transcriptional activity. This interaction influences the processing and degradation of Gli proteins.

Pathways

The Hedgehog signaling cascade prominently features Gli2 as a critical mediator. This pathway is fundamental in embryonic development. Alongside other Gli proteins like Gli1 and Gli3 Gli2 helps to translate extracellular Hh signals into precise cellular responses. In the absence of Hh ligands Gli2 remains tethered in the cytoplasm in a complex with SuFu limiting its transcription activity. Upon Hh pathway activation Gli2 translocates to the nucleus and modulates target gene expression.

Gli2 has a notable connection to cancers including basal cell carcinoma and medulloblastoma. Overactive Hedgehog signaling often involves dysregulation of Gli2 which promotes tumorigenesis by driving inappropriate cellular proliferation. Additionally Gli2 links to the genetic disorder Greig cephalopolysyndactyly syndrome via its interactions with Gli3 protein. These connections underline the importance of Gli2 as a therapeutic target in certain pathological conditions.