Cited by 587RNA Research and SplicingRNA regulation and diseaseRNA and protein synthesis mechanisms

Diverse molecular functions of Hu proteins

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Hinman, M. N., Lou, H.·2008·Cellular and Molecular Life Sciences

Abstract

Hu proteins are RNA-binding proteins involved in diverse biological processes. The neuronal members of the Hu family, HuB, HuC, and HuD play important roles in neuronal differentiation and plasticity, while the ubiquitously expressed family member, HuR, has numerous functions mostly related to cellular stress response. The pivotal roles of Hu proteins are dictated by their molecular functions affecting a large number of target genes. Hu proteins affect many post-transcriptional aspects of RNA metabolism, from splicing to translation. In this communication, we will focus on these molecular events and review our current understanding of how Hu proteins mediate them. In particular, emphasis will be put on the nuclear functions of these proteins, which were recently discovered. Three examples including calcitonin/calcitonin gene-related peptide, neurofibromatosis type 1, and Ikaros will be discussed in detail. In addition, an intriguing theme of antagonism between Hu proteins and other AU-rich sequence binding proteins will be discussed.

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  • There are a few known AUBPs that enhance mRNA stability, with Hu proteins being the most notable.

    “Nevertheless, there are a few known AUBPs that enhance mRNA stability, with Hu proteins being the most notable (Brennan and Steitz 2001; Hinman and Lou 2008; Pascale et al. 2008).”
  • HuD mediates alternative splicing of the Ikaros gene, possibly by suppressing exon 4 inclusion.

    “Furthermore, overexpression and down-regulation of HuD in T-cell lines demonstrated that it mediates alternative splicing of the Ikaros gene, possibly by suppressing exon 4 inclusion (Bellavia et al. 2007; Hinman and Lou 2008).”
  • The ELAVL family consists of four highly homologous members.

    “The ELAVL (also known as Hu) family of proteins consists of four highly homologous members109–111”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [111]

  • ELAVLs regulate mRNA stability and translation efficiency through binding to 3′ UTRs.

    “The ELAVLs have primarily been studied as regulators of mRNA stability and translation efficiency through their binding to 3′ UTRs110,111,123”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [111]

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Authors
Hinman, M. N., & Lou, H.
Affiliations
  • Case Western Reserve University (US)
  • Case Comprehensive Cancer Center (US)
Corresponding author
Lou, H.
Venue
Cellular and Molecular Life Sciences
Published
2008-06-26
Volume
65
Issue
20
Pages
3168-3181
ISSN
  • 1420-682X (ISSN-L)
  • 1420-9071
OpenAlex
W2064492560
Cited by
587
References
116
Citations by year
2026: 12 · 2025: 23 · 2024: 30 · 2023: 36 · 2022: 26 · 2021: 26 · 2020: 35 · 2019: 30 · 2018: 35 · 2017: 29 · 2016: 34 · 2015: 26 · 2014: 37 · 2013: 45 · 2012: 44
FWCI
16.16
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Life Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of General Medical Sciences (T32GM008613)
  • National Institute of Neurological Disorders and Stroke (R01NS049103, NS-049103)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
HU protein, RNA-binding proteins, HuR, hubs, HuC, HUD, post-transcriptional regulation, RNA splicing, translation (biology), neuronal differentiation, neuroplasticity, cellular stress response, calcitonin, calcitonin gene-related peptide, neurofibromatosis type 1, Ikaros, AU-rich elements
MeSH terms
Animals, Brain, Cell Nucleus, Humans, Protein Biosynthesis, Calcitonin Gene-Related Peptide, RNA Stability, ELAV Proteins

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