SnoN in mammalian development, function and diseases

Nadine S Jahchan1, Kunxin Luo

  • 1Department of Molecular and Cell Biology, University of California, Berkeley, USA.

Insights

Ski-novel protein (SnoN) regulates key cellular processes and has dual roles in cancer development. Its functions in embryonic and adult tissues highlight its importance in development and homeostasis.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • SnoN (Ski-novel protein) identified as a nuclear proto-oncogene.
  • SnoN negatively regulates transforming growth factor-β (TGF-β) signaling.
  • SnoN activates p53, influencing cell proliferation, senescence, apoptosis, and differentiation.

Purpose of the Study:

  • To investigate the expression patterns and functions of SnoN.
  • To understand SnoN's role in normal epithelial development and tumorigenesis.
  • To explore SnoN's dual pro-oncogenic and anti-oncogenic functions.

Main Methods:

  • Studies utilizing mouse models.
  • Analysis of mammalian cell lines.
  • Investigation of signaling pathway modulation by SnoN.

Main Results:

  • SnoN plays critical roles in epithelial development.
  • SnoN is implicated in tumorigenesis.
  • SnoN exhibits context-dependent oncogenic and tumor-suppressive functions.

Conclusions:

  • SnoN has broad functions in embryonic and postnatal tissue development and homeostasis.
  • SnoN's modulation of multiple signaling pathways contributes to its diverse roles.
  • Further research into SnoN's mechanisms is warranted for understanding its implications in cancer and development.

Related Concept Videos

Hedgehog Signaling Pathway02:33

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
Notch Signaling Pathway03:14

Notch Signaling Pathway

The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Notch Signaling Pathway03:14

Notch Signaling Pathway

The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Neurulation01:30

Neurulation

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the anterior...
Alternative RNA Splicing02:18

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...