| 2007 |
PICH (ERCC6L) is phosphorylated by Cdk1 at T1063, which recruits Plk1 to PICH and controls its localization to kinetochores and inner centromeres during prometaphase. |
Co-immunoprecipitation, phosphorylation assays, site-directed mutagenesis, immunofluorescence |
Cell |
High |
17218258
|
| 2007 |
PICH localizes to ultrafine DNA threads (UFBs) connecting sister kinetochores in anaphase; these threads are tension-dependent, DNase-sensitive, and exacerbated by cohesin loss or topoisomerase II inhibition, suggesting PICH binds catenated centromeric DNA. |
Immunofluorescence, DNase treatment, siRNA depletion, live-cell imaging |
Cell |
High |
17218258
|
| 2007 |
Depletion of PICH causes selective loss of Mad2 from kinetochores and abrogates the spindle assembly checkpoint; however, subsequent work showed this effect was due to off-target siRNA reduction of Mad2 rather than a direct role of PICH in the checkpoint. |
siRNA depletion, immunofluorescence, Mad2-rescue BAC experiments |
Cell / Chromosoma |
High |
17218258 19904549
|
| 2007 |
Depletion of topoisomerase IIα leads to abnormal persistence of PICH-coated anaphase threads, and shortens the metaphase interkinetochore distance, establishing a functional relationship between Topo IIα and PICH-coated UFBs. |
Conditional Topo IIα mutant cell line, immunofluorescence, FISH |
Journal of cell science |
Medium |
17956945
|
| 2008 |
PICH targets Plk1 to chromosome arms during mitosis via a direct interaction; disruption of PICH-Plk1 interaction or PICH ATPase activity causes defects in chromosome compaction and anaphase bridge formation, placing PICH-Plk1 complex upstream of chromosome architecture regulation. |
Co-immunoprecipitation, siRNA depletion, overexpression of binding-deficient mutants, immunofluorescence |
Cell cycle |
Medium |
18418076
|
| 2010 |
PICH and Plk1 coordinately maintain prometaphase chromosome arm architecture; PICH knockdown causes loss of Plk1 from chromosome arms and disorganized chromosomes; this disorganization is prevented by topoisomerase II inhibitor ICRF-193, implicating Topo II activity downstream. |
siRNA knockdown, immunofluorescence, ICRF-193 treatment |
Molecular biology of the cell |
Medium |
20130082
|
| 2011 |
PICH binds directly to BLM and is required for BLM localization to anaphase centromeric threads; purified recombinant PICH has nucleosome remodeling activity in vitro; PICH and BLM cooperate to maintain anaphase DNA threads free of histones. |
Co-immunoprecipitation, siRNA depletion, in vitro nucleosome remodeling assay with purified protein, immunofluorescence |
The EMBO journal |
High |
21743438
|
| 2012 |
PICH ATPase activity is required for prevention of chromatin bridge formation and for temporal/spatial control of PICH localization to chromatin, but is not required for UFB resolution; Plk1 controls PICH localization through phosphorylation of proteins distinct from PICH itself. |
Antibody microinjection, siRNA rescue with ATPase mutants, immunofluorescence, quantitative UFB analysis |
Chromosoma |
Medium |
22527115
|
| 2012 |
BLM and PICH co-localize at centromeres from G2/prophase through anaphase; both proteins are required for recruitment of active topoisomerase IIα to centromeres; loss of either causes centromeric non-disjunction and increased UFBs, suggesting BLM-PICH cooperate upstream of Topo IIα in centromere decatenation. |
Immunofluorescence, siRNA, FISH, ChIP, electron microscopy, chromosome spreads |
PloS one |
Medium |
22563370
|
| 2013 |
PICH binds duplex DNA with remarkably high affinity that increases with tension-induced DNA stretching; PICH translocates along DNA in an ATP-dependent manner and extension of DNA; binding of PICH diminishes force-induced DNA melting, supporting a model where PICH recognizes and stabilizes DNA under tension during anaphase. |
Microfluidics, fluorescence microscopy, optical tweezers, in vitro biochemical assays with purified PICH |
Molecular cell |
High |
23973328
|
| 2015 |
PICH deletion in avian (DT40) cells causes chromosome structural abnormalities and hypersensitivity to Topo II inhibitor ICRF-193; PICH-deficient cells undergo sister chromatid non-disjunction; purified PICH strongly stimulates the catalytic activity of Topoisomerase II in vitro; PICH co-localizes with Topo IIα on UFBs and rDNA, and resolution of both requires PICH ATPase activity. |
Gene deletion (PICH-/- avian cells), in vitro Topo II stimulation assay with purified proteins, immunofluorescence, ICRF-193 sensitivity assays, human PICH-/- cell line generation |
Nature communications |
High |
26643143
|
| 2015 |
PICH is SUMOylated by SUMO2/3 on mitotic chromosomes in a PIASy-dependent manner; PICH directly interacts with SUMOylated proteins (including SUMOylated PARP1 and Topo IIα); SUMOylation of PICH reduces its DNA binding capability, suggesting SUMO regulates PICH DNA-dependent ATPase activity. |
Xenopus egg extract assays, purified recombinant human PICH binding assays, in vitro SUMOylation, DNA binding assays |
The Journal of biological chemistry |
High |
25564610
|
| 2016 |
PICH contains three SUMO-interacting motifs (SIMs); SIM3 (near the C-terminus) is critical for centromeric localization, while the other two SIMs function in chromatin bridge prevention; all SIMs are dispensable for PICH localization on UFBs. |
Conditional PICH expression, SIM-deficient mutant analysis, immunofluorescence, siRNA rescue |
Cell cycle |
Medium |
27230136
|
| 2017 |
PICH interacts with BEND3 via a novel interface between a TPR domain in PICH and a BEN domain in BEND3; this interaction occurs in mitosis; the crystal structure of the TPR-BEN complex was determined at 2.2 Å resolution and key residues for the interaction were identified. |
Co-immunoprecipitation, in vitro pulldown with purified proteins, X-ray crystallography, site-directed mutagenesis |
Nucleic acids research |
High |
28977671
|
| 2018 |
Loss of PICH in mice causes embryonic lethality at E12.5 due to global DNA damage accumulation, chromosomal instability, p53 activation, and increased apoptosis; p53 deletion does not rescue viability; PICH-deficient MEFs are resistant to RASV12/E1A transformation. |
Pich knockout mouse generation, embryo phenotyping, immunofluorescence, p53 double-KO epistasis |
Cell reports |
High |
30232008
|
| 2019 |
PICH and Topoisomerase 3α (TOP3A) combine to introduce positive DNA supercoiling into DNA: PICH progressively extrudes hypernegatively supercoiled DNA loops that are relaxed by TOP3A, creating an extraordinarily high density of positive supercoiling analogous to reverse-gyrase activity. |
In vitro reconstitution with purified PICH and TOP3A, single-molecule magnetic tweezers, fluorescence imaging |
Nature structural & molecular biology |
High |
30936532
|
| 2020 |
Upon replication stress, TOP2A is recruited to stalled forks, then SUMOylated by ZATT, which recruits the SUMO-targeted DNA translocase PICH; PICH promotes extensive fork reversal; disruption of the ZATT-TOP2A-PICH axis results in accumulation of partially reversed forks and genome instability. |
siRNA depletion, iPOND, proximity ligation assay, replication fiber assay, electron microscopy of replication intermediates |
Molecular cell |
High |
33296677
|
| 2020 |
PICH specifically disperses SUMO2/3-modified proteins (including SUMOylated Topo IIα) from mitotic chromosomes in a translocase-dependent manner; PICH attenuates SUMOylated Topo IIα catalytic activity in vitro via its SUMO-binding ability. |
Auxin-inducible degron conditional depletion, immunofluorescence, in vitro SUMOylated Topo IIα activity assay with purified PICH |
Molecular biology of the cell |
Medium |
32877270
|
| 2022 |
PICH is a tension- and ATP-dependent nucleosome remodeler: in a single-molecule assay mimicking chromatin under tension, PICH facilitates nucleosome unwrapping and slides remaining histones along DNA, providing direct evidence for its chromatin remodeling activity at anaphase bridges. |
Dual-trap optical tweezers, fluorescence imaging, single-molecule assay with purified PICH and nucleosome arrays |
Nature communications |
High |
36433994
|
| 2022 |
PICH deficiency in mouse embryos causes defective embryonic hematopoiesis: PICH-KO fetal liver HSCs show elevated cytoplasmic dsDNA and activation of the cGAS-STING pathway leading to excessive type I interferon production; deletion of Ifnar1 or cGAS rescues the defective hematopoiesis. |
Pich-KO mouse model, bone marrow transplantation, cGAS/Ifnar1 epistasis, flow cytometry, cytoplasmic dsDNA staining |
Advanced science |
High |
35037428
|
| 2022 |
PICH regulates the expression of Nrf2 and antioxidant response genes during oxidative stress; PICH is present on Nrf2 and antioxidant gene promoters (by ChIP); Nrf2 and H3K27ac occupancy at PICH target promoters depends on PICH expression. |
ChIP, siRNA depletion, overexpression rescue, RT-PCR, ROS measurement |
Epigenomes |
Low |
36278682
|
| 2023 |
PICH forms a transcriptional complex with RNA polymerase II (Pol II) and ATF4 at the CCNA1 promoter in an ATPase-dependent manner, promoting cyclin A1 transcription and S-phase progression; this function contributes to 5-FU chemoresistance in gastric cancer. |
Co-immunoprecipitation of PICH-Pol II-ATF4 complex, ChIP, ATPase-deficient mutant rescue, human organoids, patient-derived xenografts |
Cancer research |
Medium |
37646571
|
| 2023 |
ERCC6L (PICH) directly interacts with KIF4A; both proteins are involved in mitosis and the malignant progression of breast cancer; ERCC6L accelerates the cell cycle by regulating p53/p21/CDK1/Cyclin B and PLK1/CDC25C/CDK1/Cyclin B signaling pathways. |
Co-immunoprecipitation, ERCC6L conditional knockout mouse model, siRNA/overexpression functional assays, western blotting |
Journal of experimental & clinical cancer research |
Low |
37667329
|
| 2023 |
A genome-wide loss-of-function screen identified FIRRM (C1orf112) as synthetic lethal with PICH (ERCC6L); FIRRM interacts with and stabilizes FIGNL1; loss of FIRRM or FIGNL1 causes UFB formation and impaired replication fork dynamics, creating dependence on PICH for viability. |
Genome-wide CRISPR KO screen, Co-IP, immunofluorescence, replication fork assays |
Cell reports |
Medium |
37347663
|
| 2024 |
RAD52 deficiency increases ERCC6L-coated anaphase UFBs, and ERCC6L depletion causes elevated RAD52 foci in prometaphase and interphase cells; combined depletion of ERCC6L and CDK1 inhibition causes marked loss of viability in RAD52-deficient cells, indicating RAD52 and ERCC6L play compensatory roles in genome stability in mitosis. |
CRISPR KO screen, siRNA depletion, immunofluorescence, 53BP1 foci assay, hydroxyurea/ICRF-193 treatment |
PLoS genetics |
Medium |
39561207
|
| 2025 |
PICH's translocase activity plays a dual role in UFB resolution: facilitating generation of single-stranded UFBs and stimulating topoisomerase IIα; a PICH mutant impairing BLM and RIF1 UFB recruitment partially inhibits resolution, while the translocase-inactive mutant (PICHK128A) fails to resolve UFBs and induces hypocondensed chromosomes; PICH depletion causes chromosomal rearrangements including translocations and inversions by whole-genome sequencing. |
siRNA depletion, PICH mutant rescue, whole-genome sequencing, immunofluorescence, DNA combing |
Nucleic acids research |
Medium |
39704103
|
| 2025 |
PICH impacts the spindle assembly checkpoint (SAC): defects in either PICH remodeling activity or SIM-mediated SUMO binding delay mitotic progression via SAC activation (extended Mad1 foci at centromeres); PICH controls Bub1 kinetochore association, directly or indirectly affecting SAC activity. |
Conditional PICH depletion (AID system), PICH mutant replacement, proteomics of chromosomal SUMOylated proteins, immunofluorescence, live-cell imaging |
Life science alliance |
Medium |
39919802
|