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The LKB1 complex-AMPK pathway: the tree that hides the forest

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Abstract

Initially identified as the Caenorhabditis elegans PAR-4 homologue, the serine threonine kinase LKB1 is conserved throughout evolution and ubiquitously expressed. In humans, LKB1 is causally linked to the Peutz–Jeghers syndrome and is one of the most commonly mutated genes in several cancers like lung and cervical carcinomas. These observations have led to classify LKB1 as tumour suppressor gene. Although, considerable dark zones remain, an impressive leap in the understanding of LKB1 functions has been done during the last decade. Role of LKB1 as a major actor of the AMPK/mTOR pathway connecting cellular metabolism, cell growth and tumorigenesis has been extensively studied probably to the detriment of other functions of equal importance. This review will discuss about LKB1 activity regulation, its effectors and clues on their involvement in cell polarity.

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Acknowledgments

We apologise to researchers whose investigations were not included in this review, due to space limitations. This work is supported by INSERM and La Ligue Nationale Contre le Cancer (Label Ligue 2010 JPB).

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Authors and Affiliations

  1. Inserm, U891, Centre de Recherche en Cancérologie de Marseille, 27 Blv Lei Roure, 13009, Marseille, France

    Michaël Sebbagh, Sylviane Olschwang, Marie-Josée Santoni & Jean-Paul Borg

  2. Institut Paoli-Calmettes, 13009, Marseille, France

    Michaël Sebbagh, Sylviane Olschwang, Marie-Josée Santoni & Jean-Paul Borg

  3. Univ Méditerranée, 13007, Marseille, France

    Michaël Sebbagh, Sylviane Olschwang, Marie-Josée Santoni & Jean-Paul Borg

Authors
  1. Michaël Sebbagh
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  2. Sylviane Olschwang
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  3. Marie-Josée Santoni
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  4. Jean-Paul Borg
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Correspondence to Michaël Sebbagh or Jean-Paul Borg.

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Sebbagh, M., Olschwang, S., Santoni, MJ. et al. The LKB1 complex-AMPK pathway: the tree that hides the forest. Familial Cancer 10, 415–424 (2011). https://doi.org/10.1007/s10689-011-9457-7

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  • DOI: https://doi.org/10.1007/s10689-011-9457-7

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