| 2003 |
TD-60 (RCC2) was purified and cloned as a member of the RCC1 family; it binds preferentially to the nucleotide-free form of small GTPase Rac1. siRNA depletion of TD-60 suppresses overall spindle assembly, blocks cells in prometaphase, activates the spindle assembly checkpoint, and prevents recruitment of passenger proteins survivin and Aurora B to centromeres. |
Protein purification, cloning, co-precipitation with nucleotide-free Rac1, siRNA knockdown with immunofluorescence and cell cycle analysis |
Developmental cell |
High |
12919680
|
| 1998 |
TD-60 (RCC2) and INCENP colocalize identically throughout G2 and mitosis, both concentrating at centromeres in prophase and redistributing to the spindle midzone and cortex during anaphase/cytokinesis, suggesting they cooperate in signaling cytokinesis as chromosome passenger proteins. |
Confocal immunofluorescence microscopy, pixel count colocalization analysis, dihydrocytochalasin B treatment |
Chromosoma |
Medium |
9914378
|
| 2008 |
Aurora-B activation in vitro requires two cofactors: TD-60 (RCC2) and microtubules. TD-60 is critical for localizing both the chromosome passenger complex (CPC) and Haspin kinase activity to centromeres. Additionally, Aurora-B substrate phosphorylation by centromeric kinases Plk1 and Haspin relieves substrate-mediated inhibition of Aurora-B activation. |
In vitro Aurora-B kinase activation assay, siRNA depletion, immunofluorescence localization of CPC components and Haspin |
Science (New York, N.Y.) |
High |
18218899
|
| 2013 |
TD-60 (RCC2) is an essential regulator of interphase cell cycle progression; siRNA suppression blocks G1/S phase progression and G2-to-mitosis transition in both non-transformed and p53-null cells. TD-60 associates with Rac1 and Arf6 in interphase. |
siRNA knockdown, cell cycle analysis (flow cytometry), co-immunoprecipitation with Rac1 and Arf6 |
Cell cycle (Georgetown, Tex.) |
Medium |
23388455
|
| 2014 |
RCC2 guides mesenchymal migration by binding to the switch regions of Rac1 and competitively inhibiting GEF action, thereby preventing off-axial protrusion. RCC2 interacts with coronin-1C (Coro1C) and Rac1 in a trimeric complex; Coro1C mediates release of inactive Rac1 from non-protrusive membranes for redistribution to the leading edge. Morpholino knockdown of RCC2 in zebrafish delays arrival of neural crest derivatives at correct locations in vivo. |
RNA interference, Co-immunoprecipitation, 1D/3D migration assays, zebrafish morpholino knockdown |
Journal of cell science |
High |
25074804
|
| 2015 |
TD-60/RCC2 exhibits guanine exchange factor (GEF) activity for the small GTPase RalA, both in vitro and in cells. TD-60 or RalA depletion causes spindle abnormalities and abnormal centromeric accumulation of CPC components in prometaphase. Expression of GTP-locked RalA(Q72L) reverts several mitotic phenotypes caused by TD-60 depletion, placing RalA downstream of TD-60 in CPC regulation. |
In vitro GEF activity assay, siRNA depletion, epistasis rescue with GTP-locked RalA mutant, immunofluorescence |
Nature communications |
High |
26158537
|
| 2017 |
p53 is a transcriptional regulator of RCC2, acting through a palindromic binding motif in the RCC2 promoter. RCC2 physically interacts with Rac1 via a unique β-hairpin in its RCC1-like domain (identified by crystal structure). p53 or RCC2 deficiency leads to Rac1 activation and impaired haptotaxis; ectopic RCC2 restores directional migration in p53-null cells, defining a p53/RCC2/Rac1 axis. |
Chromatin immunoprecipitation (ChIP), crystal structure determination, co-immunoprecipitation, site-directed mutagenesis of RCC2 β-hairpin, haptotaxis assay, overexpression rescue |
Oncogene |
High |
28869598
|
| 2017 |
RCC2 overexpression in lung adenocarcinoma cells promotes cell migration, invasion, and EMT, and activates JNK signaling. JNK inhibition suppresses the RCC2-mediated effects on migration, invasion, EMT, and MMP-2/MMP-9 expression, placing RCC2 upstream of MAPK-JNK in this context. |
Forced overexpression, siRNA knockdown, in vivo mouse model, pharmacological JNK inhibition, Western blotting for EMT markers and MMPs |
Clinical cancer research |
Medium |
28606921
|
| 2018 |
RCC2 regulates apoptosis by blocking Rac1 signaling; forced RCC2 expression blocks spontaneous or staurosporine-induced apoptosis, while RCC2 knockdown increases apoptosis. The protective activity of RCC2 is revoked by constitutively active Rac1(Q61L), confirming that RCC2 acts through Rac1 inhibition. |
Overexpression and siRNA knockdown in cancer cell lines, apoptosis assays, epistasis with constitutively active Rac1 mutant |
BMC cancer |
Medium |
29321004
|
| 2019 |
RCC2 interacts with RalA and promotes downstream RalBP1 activity. RCC2 knockdown decreases RalA-GTP levels and increases MAPK/JNK phosphorylation in gastric cancer cells. RalA knockdown reverses the effects of RCC2 overexpression on cell proliferation, apoptosis, and migration, while RalA overexpression alleviates the effects of RCC2 knockdown, confirming RalA is downstream of RCC2 in these processes. |
Co-immunoprecipitation, GTP-RalA pulldown assay, siRNA knockdown, epistasis rescue with RalA overexpression/knockdown, RBC8 pharmacological inhibitor |
FASEB journal |
Medium |
30768358
|
| 2019 |
RCC2 promotes glioblastoma proliferation and radioresistance via p-STAT3-dependent transcriptional activation of DNMT1. shRNA inhibition of RCC2 reduced tumor proliferation and tumorigenicity in vitro and in vivo, and pharmacological inhibition of DNMT1 attenuated tumor growth. |
shRNA knockdown, in vivo tumor models, DNMT1 inhibitor treatment, pathway analysis implicating JAK-STAT signaling |
Biochemical and biophysical research communications |
Low |
31277942
|
| 2020 |
RCC2 upregulates and stabilizes Sox2 expression by inhibiting ubiquitination-mediated proteasome degradation, and increases Sox2 transcriptional activity and promoter binding. Conditional RCC2 knockout in mice reduces esophageal tumor formation and PCNA expression. |
Overexpression/knockdown, ubiquitination assay, Sox2 promoter-binding assay, conditional knockout mouse model, immunohistochemistry |
Molecular cancer research : MCR |
Medium |
32801160
|
| 2020 |
RCC2 mediates cisplatin resistance and metastatic behavior in hepatocellular carcinoma via regulation of AKT and Bcl2 survival pathways; RCC2 silencing inhibits proliferation, migration, invasion, and increases apoptosis upon cisplatin treatment. |
Lentivirus-based shRNA, cell proliferation/migration/invasion assays, apoptosis assay, Western blotting for AKT and Bcl2 |
Human cell |
Low |
32239438
|
| 2020 |
RCC2 interacts with RalA in gastric cancer cells; RCC2 knockdown decreases RalA-GTP and alters MAPK/JNK phosphorylation, while the effects are confirmed by use of RBC8 (a Ral GTPase inhibitor). RCC2 knockdown inhibits tumor progression in vivo. |
Co-immunoprecipitation, GTP-RalA pulldown, RBC8 inhibitor, in vivo tumor model, siRNA knockdown |
OncoTargets and therapy |
Medium |
32341655
|
| 2021 |
BRD4 drives RCC2 transcription through a BRD4-TP73 complex that binds the RCC2 promoter. Inhibition of BRD4 (genetic or pharmacological) decreases RCC2 expression and ESCC cell proliferation in vitro and in PDX models. |
Proteomic/transcriptomic analysis, ChIP or promoter binding assay, BRD4 inhibitors, PDX tumor model |
Oncogene |
Medium |
34750516
|
| 2022 |
The m6A reader IGF2BP3 interacts with RCC2 mRNA and stabilizes m6A-modified RCC2 RNA, thereby maintaining RCC2 protein expression in AML cells. IGF2BP3 knockdown reduces RCC2 levels and impairs leukemic cell survival. |
RNA immunoprecipitation (RIP), knockdown of IGF2BP3 with Western blot for RCC2, in vitro and in vivo leukemia assays |
Experimental & molecular medicine |
Medium |
35217832
|
| 2022 |
RCC2 regulates G2/M progression via CDC2 phosphorylation at Tyrosine 15 in glioma cells. Additionally, RCC2 stabilizes the transcription factor BACH1 at its C-terminus, leading to transcriptional upregulation of hexokinase 2 (HK2) and promotion of glycolysis and pentose phosphate pathway activity, defining a PTEN/RCC2/BACH1/HK2 signaling axis. |
Gene silencing, RNA-sequencing, metabolomics, Western blotting for CDC2-pY15, co-immunoprecipitation/stabilization of BACH1 |
Cancer letters |
Medium |
36116740
|
| 2012 |
RCC2/TD60 physically interacts with cortactin in mitotic cells, identified by SILAC-based mass spectrometry and confirmed by reciprocal co-immunoprecipitation. Both proteins colocalize in the equatorial plane of dividing HeLa cells. |
SILAC mass spectrometry pulldown, reciprocal co-immunoprecipitation, immunofluorescence colocalization |
Journal of proteomics |
Medium |
22282019
|
| 2024 |
NudCL2, a co-chaperone of Hsp90, localizes to the midbody and stabilizes RCC2 protein at the midbody in a complex with Hsp90. NudCL2 knockout reduces RCC2 levels; Hsp90 inhibition destabilizes RCC2. RCC2 depletion mirrors NudCL2 KO phenotypes (cytokinesis failure, multinucleation, midbody disorganization). Ectopic RCC2 rescues cytokinesis defects in NudCL2-depleted cells, placing RCC2 downstream of NudCL2/Hsp90 in the cytokinesis pathway. |
NudCL2 knockout, iTRAQ-based quantitative proteomics, co-immunoprecipitation, rescue experiment with ectopic RCC2 expression, immunofluorescence |
Protein & cell |
High |
38801297
|
| 2025 |
RCC2 undergoes lactylation at lysine K124, mediated by the acyltransferase KAT2A. This lactylation event assists RCC2 in recruiting free SERBP1, thereby stabilizing MAD2L1 mRNA and activating the MAD2L1 signaling pathway to promote breast cancer cell proliferation under high-glucose conditions. |
Post-translational modification mapping (K124 lactylation site), KAT2A identification as writer enzyme, co-immunoprecipitation with SERBP1, mRNA stability assay, small molecule inhibitor blocking RCC2 active pocket |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
40145796
|
| 2025 |
ROS accumulation induced by GPx4 inhibition activates Aurora A phosphorylation, which leads to RCC2 ubiquitination and degradation; the Thr418 phosphorylation site on RCC2 is crucial for its ubiquitination at K377. CD24 also targets RCC2 for degradation. RCC2 controls cell migration by promoting ubiquitination and degradation of vimentin, affecting cytoskeletal dynamics. CD24 knockdown inhibits β-catenin signaling by preventing RCC2 degradation (which otherwise suppresses AXIN2 and APC). |
Proteomic analysis, site-directed mutagenesis (Thr418, K377), ubiquitination assay, co-immunoprecipitation, ROS quantification, in vitro and in vivo metastasis assays |
Redox biology / The Journal of clinical investigation |
Medium |
39908861 41090358
|
| 2022 |
RCC2 binds to HMGA2 by co-immunoprecipitation in colorectal cancer cells, and ectopic RCC2 expression promotes proliferation, migration, and invasion while HMGA2 knockdown has opposite effects, suggesting cooperation. |
Co-immunoprecipitation, ectopic overexpression, siRNA knockdown, cell proliferation/invasion assays |
Experimental and therapeutic medicine |
Low |
36340602
|