Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)
PIM kinases phosphorylate lactate dehydrogenase A at serine 161 and suppress its nuclear ubiquitination
Julkaisun tekijät: Mung Kwan Long, Meinander Annika, Koskinen Päivi J.
Kustantaja: WILEY
Julkaisuvuosi: 2022
Journal: FEBS Journal
Lehden akronyymi: FEBS J
Sivujen määrä: 14
ISSN: 1742-464X
eISSN: 1742-4658
DOI: http://dx.doi.org/10.1111/febs.16653
Verkko-osoite: https://febs.onlinelibrary.wiley.com/doi/epdf/10.1111/febs.16653
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/177357532
Lactate dehydrogenase A (LDHA) is a glycolytic enzyme catalysing the reversible conversion of pyruvate to lactate. It has been implicated as a substrate for PIM kinases, yet the relevant target sites and functional consequences of phosphorylation have remained unknown. Here, we show that all three PIM family members can phosphorylate LDHA at serine 161. When we investigated the physiological consequences of this phosphorylation in PC3 prostate cancer and MCF7 breast cancer cells, we noticed that it suppressed ubiquitin-mediated degradation of nuclear LDHA and promoted interactions between LDHA and 14-3-3 proteins. By contrast, in CRISPR/Cas9-edited knock-out cells lacking all three PIM family members, ubiquitination of nuclear LDHA was dramatically increased followed by its decreased expression. Our data suggest that PIM kinases support nuclear LDHA expression and activities by promoting phosphorylation-dependent interactions of LDHA with 14-3-3 epsilon, which shields nuclear LDHA from ubiquitin-mediated degradation.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
