The clathrin assembly protein PICALM is required for erythroid maturation and transferrin internalization in mice

Mai Suzuki, Hirokazu Tanaka, Akira Tanimura, Kenji Tanabe, Natsuko Oe, Shinya Rai, Shunsuke Kon, Manabu Fukumoto, Kohji Takei, Takaya Abe, Itaru Matsumura, Yuzuru Kanakura, Toshio Watanabe

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Phosphatidylinositol binding clathrin assembly protein (PICALM), also known as clathrin assembly lymphoid myeloid leukemia protein (CALM), was originally isolated as part of the fusion gene CALM/AF10, which results from the chromosomal translocation t(10;11)(p13;q14). CALM is sufficient to drive clathrin assembly in vitro on lipid monolayers and regulates clathrin-coated budding and the size and shape of the vesicles at the plasma membrane. However, the physiological role of CALM has yet to be elucidated. Here, the role of CALM in vivo was investigated using CALM-deficient mice. CALM-deficient mice exhibited retarded growth in utero and were dwarfed throughout their shortened life-spans. Moreover, CALM-deficient mice suffered from severe anemia, and the maturation and iron content in erythroid precursors were severely impaired. CALM-deficient erythroid cells and embryonic fibroblasts exhibited impaired clathrin-mediated endocytosis of transferrin. These results indicate that CALM is required for erythroid maturation and transferrin internalization in mice.

Original languageEnglish
Article numbere31854
JournalPloS one
Volume7
Issue number2
DOIs
Publication statusPublished - 2012 Feb 21

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Fingerprint Dive into the research topics of 'The clathrin assembly protein PICALM is required for erythroid maturation and transferrin internalization in mice'. Together they form a unique fingerprint.

  • Cite this

    Suzuki, M., Tanaka, H., Tanimura, A., Tanabe, K., Oe, N., Rai, S., Kon, S., Fukumoto, M., Takei, K., Abe, T., Matsumura, I., Kanakura, Y., & Watanabe, T. (2012). The clathrin assembly protein PICALM is required for erythroid maturation and transferrin internalization in mice. PloS one, 7(2), [e31854]. https://doi.org/10.1371/journal.pone.0031854