ArticleGenes & development2025
NKX2.2 and KLF4 cooperate to regulate α-cell identity.
Article in Genes & development, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Cell-specific DNA methylation in human alpha and beta cells regulates gene expression in type 2 diabetes.Nature metabolism · 2026Article
- Epigenetic adaptation of beta cells across lifespan and disease.Nature metabolism · 2026Article
- Genome-wide cell type-specific and sex-specific transcriptional dysregulation in the islet of Langerhans underlies islet dysfunction in Down syndrome-related diabetes.bioRxiv : the preprint server for biology · 2026Article
- Human NKX2.2 influences islet endocrine cell fate choices through regulation of WNT pathway genes.bioRxiv : the preprint server for biology · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
Transcription factors (TFs) are indispensable for maintaining cell identity through regulating cell-specific gene expression. Distinct cell identities derived from a common progenitor are frequently perpetuated by shared TFs, yet the mechanisms that enable these TFs to regulate cell-specific targets are poorly characterized. We report that the TF NKX2.2 is critical for the identity of pancreatic islet α cells by directly activating α-cell genes and repressing alternate islet cell fate genes. When compared with the known role of NKX2.2 in islet β cells, we demonstrate that NKX2.2 regulates α-cell genes, facilitated in part by α-cell-specific DNA binding at gene promoters. Furthermore, we have identified the reprogramming factor KLF4 as having enriched expression in α cells, where it co-occupies NKX2.2-bound α-cell promoters, is necessary for NKX2.2 promoter occupancy in α cells, and coregulates many NKX2.2 α-cell transcriptional targets. Overexpression of
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