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. 2020 Sep 8;8:e9746. doi: 10.7717/peerj.9746

Table 1. The key regulators of beta-cells.

Designation Function References
Transcript factors
Pdx1 Essential in early and mature stages of pancreatic cell development. In early-stage regulates the formation of the pancreas from foregut endoderm. In the late stage transactivates the insulin gene Kaneto et al. (2007) and Zhu et al. (2017)
Hb9 Regulates development of the dorsal pancreas Arkhipova et al. (2012)
Ngn3 Critical regulator for pancreatic endocrine fates Akinci et al. (2012), p. 3 and Zhu et al. (2017)
NeuroD Regulates pancreatic endocrine cell differentiation and insulin gene transcription Zhu et al. (2017)
Mafa Regulates glucose-responsive insulin secretion. This TF is expressed only in beta-cells Wang et al. (2007), Nishimura, Bonner-Weir & Sharma (2009) and Zhu et al. (2017)
Pax4 Regulates of beta-cell specification Napolitano et al. (2015)
Pax6 Increases the insulin expression Arkhipova et al. (2012)
Nkx6.1 Guides endodermal progenitors toward beta-cell fate, must be generated before certain endocrine genes turn on Taylor, Liu & Sander (2013)
Nkx2.2 Critical regulator of pancreatic endocrine cell specification and differentiation Doyle & Sussel (2007)
Small molecules
GNF-9228 Selectively stimulates proliferation of beta-cells Pavathuparambil Abdul Manaph et al. (2019)
5′-azacytidine (5-AZA) DNA methylation inhibitor; increases the reprogramming process 10-fold Hohmeier et al. (2020)
Valproic acid (VPA) Increases the reprogramming process 100-fold Hohmeier et al. (2020)
Indolactam V (ILV) Induces differentiation of hesc lines toward Pdx1-positive pancreatic progenitors Hohmeier et al. (2020)
BRD7389 Induces insulin protein expression in alpha-cells Hohmeier et al. (2020)
Latrunculin A and B Induce endocrine differentiation by the reorganization of the cytoskeleton Hogrebe et al. (2020)
GABA (gamma-aminobutyric acid) Induces alpha-to-beta-cell neogenesis; participates in maintaining the beta-cell mass and in protecting beta-cells from apoptosis in vitro Ben-Othman et al. (2017)
MicroRNAs
miR-15a, miR-15b, miR-16 and miR-195 Decrease the level of NGN3 gene expression Joglekar et al. (2007) and Wong et al. (2018)
miR-7 Inhibition of proliferation in Langerhans islets Wang et al. (2013) and Wong et al. (2018)
RNA-binding proteins
Polypyrimidine tract-binding protein 1 (PTBP1) Regulates the stability of insulin mRNA Magro & Solimena (2013)
Human antigen D (HuD) Binds to insulin mRNA and controls its translation Lee et al. (2012)
Protein-disulfide isomerase (PDI) Key regulator of glucose-stimulated insulin biosynthesis Kulkarni et al. (2011)