| 1996 |
CRIP1 (rat CRIP) is a 76-residue LIM-domain protein that binds two equivalents of zinc, forming N-terminal CCHC (Cys3, Cys6, His24, Cys27) and C-terminal CCCC (Cys30, Cys33, Cys51, Cys55) modules. The modules pack via hydrophobic interactions forming a compact structure; CCHC and CCCC modules each contain two orthogonally-arrayed antiparallel beta-sheets with a C-terminal alpha-helix. |
NMR spectroscopy (homonuclear and 1H-15N heteronuclear), 500 NOE-derived distance restraints, J-coupling and proton chemical shift analysis |
Journal of molecular biology |
High |
8632452
|
| 1992 |
CRIP1 binds zinc in intestinal mucosa during absorption and functions as an intestinal zinc transport protein; high dietary zinc does not affect CRIP concentration but greatly increases metallothionein, which may compete with CRIP to decrease zinc absorption. |
Biochemical zinc-binding assays in intestinal mucosa |
Nutrition reviews |
Low |
1407754
|
| 2002 |
Transgenic mice overexpressing rat CRIP show altered cytokine patterns: reduced IFN-gamma and IL-2, and elevated IL-6 and IL-10, upon LPS challenge or mitogen stimulation, indicating CRIP operates in a cellular pathway that shifts cytokine balance toward Th2; CRIP overexpression also caused delayed viral clearance after influenza infection. |
Transgenic mouse model with LPS challenge, mitogen stimulation of splenocytes, delayed-type hypersensitivity assay, influenza infection model |
American journal of physiology. Endocrinology and metabolism |
Medium |
12006348
|
| 2008 |
In C. elegans, CRIP homologues (EXC-9 and a second paralogue) maintain apical cytoskeletal flexibility in polarized epithelial cells to regulate tubule diameter; EXC-9 shows genetic interaction with the EXC-5 guanine exchange factor that regulates CDC-42 activity, placing CRIP in a CDC-42/GEF pathway controlling cytoskeletal organization. |
Genetic cloning of exc-9, epistasis analysis with exc-5 and other exc genes in C. elegans, tubule morphology phenotype analysis |
Developmental biology |
Medium |
18384766
|
| 2013 |
CRIP1 knockdown in T47D and BT474 breast cancer cells increased phosphorylation of MAPK and Akt, reduced phosphorylation of cdc2, and significantly elevated cell proliferation and invasion in vitro, indicating CRIP1 negatively regulates MAPK/Akt signaling and cell cycle progression. |
siRNA knockdown, immunoblotting, WST-1 proliferation assay, invasion assay |
Molecular cancer |
Medium |
23570421
|
| 2018 |
CRIP1 overexpression in cervical cancer cells promotes migration, invasion, and epithelial-mesenchymal transition by activating the Wnt/β-catenin signaling pathway, increasing protein levels of c-myc, cyclin D1, and cytoplasmic β-catenin. |
Transient transfection overexpression and siRNA knockdown, western blot for EMT markers and Wnt pathway components, migration/invasion assays, immunohistochemistry |
Life sciences |
Medium |
29959029
|
| 2021 |
CRIP1 promotes homologous recombination (HR) DNA repair by: (1) stabilizing BRCA2 to counteract FBXO5-targeted RAD51 degradation; (2) binding directly to the RAD51 core domain (residues 184–257) in coordination with BRCA2 to facilitate masking of the RAD51 nuclear export signal; and (3) enabling KPNA4-mediated nuclear import of the CRIP1-BRCA2-RAD51 complex. Upon DNA damage, CRIP1 is deubiquitinated and upregulated by activated AKT signaling. |
Co-immunoprecipitation, mass spectrometry screening, siRNA knockdown, domain mapping, cisplatin/epirubicin/olaparib sensitivity assays, RAD51 nuclear enrichment imaging |
Oncogene |
High |
34262130
|
| 2022 |
CRIP1 interacts with the E3 ligase STUB1 and BBOX1, promoting BBOX1 ubiquitination at lysine 240 and proteasomal degradation, thereby reducing carnitine levels. Reduced acetylcarnitine decreases β-catenin acetylation and promotes nuclear accumulation of β-catenin, facilitating cancer stem-like properties in hepatocellular carcinoma. |
Co-immunoprecipitation, ubiquitination assay, proteasomal degradation assay, BBOX1 K240 mutagenesis, acetylation analysis, β-catenin nuclear localization assay |
The EMBO journal |
High |
35775648
|
| 2023 |
CRIP1 binds to NF-κB/p65 and facilitates its nuclear translocation in an importin-dependent manner in pancreatic ductal adenocarcinoma cells, leading to transcriptional activation of CXCL1 and CXCL5, which promote chemotactic migration of myeloid-derived suppressor cells and immunosuppression. |
Co-immunoprecipitation, RNA sequencing, mass spectrometry, chromatin immunoprecipitation, orthotopic allograft model, flow cytometry, multiplexed imaging |
Gut |
High |
37541772
|
| 2023 |
CRIP1 silencing in AML (U937 and THP1) cells causes inactivation of the Wnt/β-catenin pathway through upregulation of axin1 protein, and the Wnt/β-catenin agonist SKL2001 rescues the growth and migration defects induced by CRIP1 knockdown, placing CRIP1 upstream of axin1/β-catenin in AML. |
Lentiviral shRNA knockdown, western blot, pharmacological rescue with SKL2001, growth/migration/colony assays, cell cycle analysis |
Leukemia research |
Medium |
37224580
|
| 2024 |
CRIP1 simultaneously binds deubiquitinase USP7 and proteasome coactivator PA200, forming a CRIP1/USP7/PA200 complex. CRIP1 promotes proteasome activity and autophagosome maturation by facilitating USP7-mediated deubiquitination and stabilization of PA200, thereby dually regulating protein homeostasis in multiple myeloma cells. |
Co-immunoprecipitation with tandem affinity purification/mass spectrometry (TAP/MS), RNA-seq, proteasome activity assay, autophagy assay, xenograft model |
EBioMedicine |
High |
38199044
|
| 2023 |
Single-cell RNA sequencing of human fetal epicardium identified CRIP1 as a regulator of epicardial epithelial-to-mesenchymal transition (EMT), with expression distinguishing epithelial from mesenchymal subpopulations. |
Single-cell RNA sequencing of isolated human fetal epicardium, population-specific marker analysis |
Stem cell reports |
Low |
37390825
|
| 2025 |
PRMT5-mediated symmetric dimethylation of CRIP1 at R26/R68 activates the Wnt/β-catenin pathway to promote stemness in senescent SCLC cells post-chemotherapy; subsequently, PRMT1-mediated asymmetric dimethylation of CRIP1 at R16 suppresses the p38 pathway to accelerate proliferation of stem-like cells and drive rapid tumor recurrence. |
Arginine methylation assays, site-specific mutagenesis (R16, R26, R68), Wnt/β-catenin and p38 pathway reporter/immunoblot assays, PRMT1/PRMT5 inhibitor treatments, PELI1 E3 ligase regulation of PRMTs |
International journal of biological sciences |
Medium |
41079921
|
| 2025 |
CRIP1 recruits the E3 ubiquitin ligase UBE3A to MFGE8 in chondrocytes, promoting MFGE8 ubiquitination and proteasomal degradation, which activates the NF-κB pathway (p65 phosphorylation) and drives ECM degradation in osteoarthritis. |
Immunoprecipitation/mass spectrometry, label-free quantitative proteomics, Co-IP, proteasome inhibitor rescue, CRIP1 KD/OE in primary chondrocytes and OA mouse model |
Biochemical pharmacology |
Medium |
41067282
|
| 2025 |
CRIP1 undergoes MOF-mediated lactylation at K49 in rheumatoid arthritis synovial fibroblasts. Lactylated CRIP1 binds and sequesters the cell-cycle inhibitor p21 away from CDK2, facilitating G1/S cell cycle transition and synovial proliferation. AAV delivery of a K49R lactylation-deficient CRIP1 mutant significantly reduced synovial proliferation. |
Protein lactylation assays, MOF writer identification, K49R mutagenesis, co-immunoprecipitation of CRIP1-p21-CDK2, AAV gene delivery, CIA and humanized NSG mouse models |
JCI insight |
High |
42258744
|
| 2026 |
In triple-negative breast cancer, macrophage-expressed HTRA1 associates with CRIP1 to facilitate CRIP1 binding to NF-κB, activating downstream CXCL12 transcription; this leads to T-cell egress from tumors and limits immunotherapy efficacy. |
Co-immunoprecipitation (HTRA1-CRIP1-NF-κB), single-cell and spatial transcriptomics, macrophage-specific Htra1 knockout mouse model, pharmacological CXCL12/CXCR4 blockade |
Cancer immunology research |
Medium |
41854522
|
| 2025 |
CRIP1 promotes NFATC2 binding to the SREBF1 promoter, driving SREBF1 transcription; elevated SREBF1 increases intracellular ROS levels, thereby activating endoplasmic reticulum stress and promoting malignant phenotypes in melanoma cells. |
RNA sequencing, chromatin immunoprecipitation (ChIP), dual-luciferase reporter, western blot, ROS measurement, 4-PBA/NAC pharmacological intervention, xenograft model |
Biochemical pharmacology |
Medium |
42134671
|
| 2025 |
CRIP1 inhibits mitochondrial biogenesis in melanoma cells by suppressing the protein levels of TFAM (mitochondrial transcription factor A), reducing mitochondrial DNA copy number, ATP production, respiratory capacity, and oxidative phosphorylation protein expression. |
CRIP1 overexpression and knockdown stable lines, western blot, immunofluorescence, OCR (oxygen consumption rate), mitochondrial DNA assay, cytosolic ATP assay |
Scientific reports |
Medium |
39905216
|
| 2025 |
In vitro, recombinant CRIP1 bound Aβ peptide and accelerated amyloid fibril formation, providing a mechanistic link between CRIP1 and vascular amyloid pathology in cerebral amyloid angiopathy. |
In vitro Aβ-binding assay and fibril formation kinetics assay with recombinant CRIP1 |
bioRxivpreprint |
Low |
bio_10.1101_2025.10.08.25337413
|
| 2024 |
CRIP1 knockdown in AML cells (OCI-AML3) increases glucose uptake, lactate production, and LDHA protein expression, indicating CRIP1 normally suppresses glycolytic reprogramming. CRIP1-deficient cells show enhanced sensitivity to the glycolytic inhibitor 2-DG. |
Lentiviral shRNA knockdown, glucose consumption assay, lactate secretion assay, western blot (LDHA, HK2, MCL1), flow cytometry cell death assay |
Molecular biology reports / Scientific reports |
Medium |
41670839 41986400
|