Molecular mechanisms of mitotic progression
High-fidelity chromosome transmission lies at the heart of successive and successful cell division. One and only one mission of mitosis is, therefore, to ensure equal partition of sister chromatids to two daughter cells (or one mother and one daughter cell). Any errors in this process would lead to production of aneuploid progenies, a hallmark of many human cancers. Our laboratory has been working on the molecular mechanisms of how mitotic progression is organised and coordinated, particularly focusing on how bipolar spindle microtubules are assembled. We have been using the fission yeast as a model for a long time and recently started to study zebrafish and human cells to examine evolutionary conservations of the findings and their implications that we have obtained from yeast systems.
Hori A, Peddie CJ, Collinson LM, Toda T.
Centriolar satellite- and hMsd1/SSX2IP-dependent microtubule anchoring is critical for centriole assembly.
Mol. Biol. Cell 2015;26(11):2005-2019
Koyano T, Konishi M, Martin SG, Ohya Y, Hirata D, Toda T, Kume K.
Casein kinase 1γ ensures monopolar growth polarity under incomplete DNA replication downstream of Cds1 and calcineurin in fission yeast.
Mol. Cell. Biol. 2015;35(9):1533-1542
Tang NH, Toda T.
Alp7/TACC recruits kinesin-8-PP1 to the Ndc80 kinetochore protein for timely mitotic progression and chromosome movement.
J. Cell Sci. 2015a;128(2):354-363
Tang NH, Toda T.
MAPping the Ndc80 loop in cancer: A possible link between Ndc80/Hec1 overproduction and cancer formation.
Yukawa M, Ikebe C, Toda T.
The Msd1-Wdr8-Pkl1 complex anchors microtubule minus ends to fission yeast spindle pole bodies.
J. Cell Biol. 2015;209(4):549-562
Hori A, Ikebe C, Tada M, Toda T.
Msd1/SSX2IP-dependent microtubule anchorage ensures spindle orientation and primary cilia formation.
EMBO Rep. 2014;15(2):175-184
Kakui Y, Sato M, Okada N, Toda T, Yamamoto M.
Microtubules and Alp7-Alp14 (TACC-TOG) reposition chromosomes before meiotic segregation.
Nat Cell Biol. 2013;15(7):786-796
Tang, N.H., Takada, H., Hsu, K.S., and Toda, T.
The internal loop of fission yeast Ndc80 binds Alp7/TACC-Alp14/TOG and ensures proper chromosome attachment.
Mol Biol Cell. 2013;24(8):1122-1133
Hsu KS, Toda T.
Ndc80 Internal Loop Interacts with Dis1/TOG to Ensure Proper Kinetochore-Spindle Attachment in Fission Yeast.
Curr Biol. 2011;21(3):214-220
Kume K, Koyano T, Kanai M, Toda T, Hirata D.
Calcineurin ensures a link between the DNA replication checkpoint and microtubule-dependent polarized growth.
Nat Cell Biol. 2011;13(3):234-242
Fong CS, Sato M, Toda T.
Fission yeast Pcp1 links polo kinase-mediated mitotic entry to γ-tubulin-dependent spindle formation.
EMBO J. 2010;29(1):120-130
Takayama Y, Mamnun YM, Trickey M, Dhut S, Masuda F, Yamano H, Toda T, Saitoh S.
Hsk1- and SCF(Pof3)-dependent proteolysis of S. pombe Ams2 ensures histone homeostasis and centromere function.
Dev Cell. 2010;18(3):385-396
Sato M, Toda T.
Alp7/TACC is a crucial target in Ran-GTPase-dependent spindle formation in fission yeast.
Toya M, Sato M, Haselmann U, Asakawa K, Brunner D, Antony C, Toda T.
γ-Tubulin complex-mediated anchoring of spindle microtubules to spindle-pole bodies requires Msd1 in fission yeast.
Nat. Cell Biol. 2007;9(6):646-653
Sato M, Vardy L, Angel Garcia M, Koonrugsa N, Toda T.
Interdependency of fission yeast Alp14/TOG and coiled coil protein Alp7 in microtubule localization and bipolar spindle formation.
Mol. Biol. Cell. 2004;15(4):1609-1622
Garcia MA, Koonrugsa N, Toda T.
Spindle-kinetochore attachment requires the combined action of Kin I-like Klp5/6 and Alp14/Dis1-MAPs in fission yeast.
EMBO J. 2002;21(22):6015-6024
Kitamura K, Katayama S, Dhut S, Sato M, Watanabe Y, Yamamoto M, Toda T.
Phosphorylation of Mei2 and Ste11 by Pat1 kinase inhibits sexual differentiation via ubiquitin proteolysis and 14-3-3 protein in fission yeast.
Dev. Cell. 2001;1(3):389-399
Vardy L, Toda T.
The fission yeast gamma-tubulin complex is required in G(1) phase and is a component of the spindle assembly checkpoint.
EMBO J. 2000;19(22):6098-6111
Yamano H, Kitamura K, Kominami K, Lehmann A, Katayama S, Hunt T, Toda T.
The spike of S-phase cyclin Cig2 expression at the G1-S border in fission yeast requires both APC and SCF ubiquitin ligases.
Mol. Cell. 2000;6(6):1377-1387
Kominami K, Toda T.
Fission yeast WD repeat protein Pop1 regulates genome ploidy through ubiquitin-proteasome-mediated degradation of the CDK inhibitor Rum1 and the S-phase initiator Cdc18.
Genes Dev. 1997;11(12):1548-1560