Nature Communications (Nov 2022)

A marine sponge-derived lectin reveals hidden pathway for thrombopoietin receptor activation

  • Hiromi Watari,
  • Hiromu Kageyama,
  • Nami Masubuchi,
  • Hiroya Nakajima,
  • Kako Onodera,
  • Pamela J. Focia,
  • Takumi Oshiro,
  • Takashi Matsui,
  • Yoshio Kodera,
  • Tomohisa Ogawa,
  • Takeshi Yokoyama,
  • Makoto Hirayama,
  • Kanji Hori,
  • Douglas M. Freymann,
  • Misa Imai,
  • Norio Komatsu,
  • Marito Araki,
  • Yoshikazu Tanaka,
  • Ryuichi Sakai

DOI
https://doi.org/10.1038/s41467-022-34921-2
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 11

Abstract

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The mode of cytokine receptor activation is diverse. Here, the authors find that the marine-sponge derived lectin ThC, a bivalent sugar binding protein, activates human cytokine receptor MPL. This mode of action resembles the pathogenic activation of MPL by mutant molecular chaperon calreticulin in hematologic malignancies.