| 1996 |
RARRES1 (TIG1) is a novel retinoic acid receptor (RARbeta/gamma)-responsive gene encoding a transmembrane protein with a small N-terminal intracellular region, a single membrane-spanning hydrophobic domain, and a large C-terminal extracellular region containing a glycosylation signal; its expression is upregulated by RAR-selective but not RXR-selective retinoids. |
Subtraction hybridization, Northern/Southern blot, RAR/RXR-selective retinoid treatment in skin raft cultures |
The Journal of investigative dermatology |
High |
8601727
|
| 2002 |
TIG1 overexpression in the highly malignant prostate cancer cell line PC-3M significantly decreased in vitro invasiveness and in vivo tumorigenicity, establishing a functional tumor suppressor role. |
cDNA transfection, in vitro Matrigel invasion assay, in vivo nude mouse tumor growth assay |
Journal of the National Cancer Institute |
High |
11929948
|
| 2005 |
The crystal structure of mouse latexin (the only known mammalian carboxypeptidase inhibitor and homolog of TIG1/RARRES1) was solved at 1.83 Å, revealing a cystatin fold architecture with pseudo-two-fold symmetry; modeling of TIG1 structure identified a putative membrane-binding surface, indicating RARRES1 is structurally related to carboxypeptidase inhibitors. |
X-ray crystallography (1.83 Å resolution), structural modeling |
Structure |
Medium |
15698574
|
| 2011 |
RARRES1 is a transmembrane carboxypeptidase inhibitor that directly interacts with AGBL2 (a cytoplasmic carboxypeptidase); knockdown of RARRES1 increases detyrosinated alpha-tubulin levels, consistent with RARRES1 acting as the cognate inhibitor of AGBL2 to regulate the tubulin tyrosination cycle and microtubule dynamics. |
Co-immunoprecipitation, AGBL2/RARRES1 siRNA knockdown, Western blot for tyrosinated/detyrosinated alpha-tubulin |
Cancer research |
High |
21303978
|
| 2010 |
RARRES1 knockdown in prostatic epithelial cells downregulates PP2A, valosin-containing protein (VCP), and EB1, and upregulates DLG2 and Ankrd26, placing RARRES1 upstream of multiple signaling nodes involved in growth regulation, autophagy, and spindle dynamics. |
siRNA knockdown, 2D-DIGE proteomics, MALDI mass spectrometry, Western blot |
Journal of Cancer |
Medium |
20842219
|
| 2013 |
TIG1/RARRES1 interacts with the receptor tyrosine kinase Axl, stabilizing Axl by inhibiting its proteasome-dependent degradation; TIG1 depletion reduces Axl expression, inactivates NF-κB, and downregulates MMP-9, thereby regulating invasion of inflammatory breast cancer cells. |
Co-immunoprecipitation (TIG1-Axl interaction), siRNA depletion, Western blot for Axl/NF-κB/MMP-9, in vitro invasion/migration assays, in vivo tumor growth |
Cancer research |
High |
24014597
|
| 2013 |
RARRES1 resides primarily in the endoplasmic reticulum (not the plasma membrane), whereas its homolog LXN is nuclear; siRNA suppression of RARRES1 enhances colony-forming ability and invasive capacity of primary prostate epithelial cultures, and all-trans retinoic acid induces RARRES1 expression coordinately with differentiation. |
Immunofluorescence subcellular localization, siRNA knockdown, colony-forming assay, Matrigel invasion assay, retinoic acid treatment |
Oncogenesis |
Medium |
23588494
|
| 2012 |
Epigenetic silencing of RARRES1 is mediated by hypermethylation specifically at a proximal promoter element, and CTCF binds to the unmethylated promoter to positively regulate RARRES1 transcription; CTCF knockdown suppresses RARRES1 expression. |
Bisulfite sequencing, methylation-specific PCR, chromatin immunoprecipitation (CTCF), CTCF siRNA knockdown, reporter assay |
PloS one |
Medium |
22615834
|
| 2019 |
RARRES1 interaction with cytoplasmic carboxypeptidase CCP2 inhibits tubulin deglutamylation, which in turn regulates mitochondrial VDAC1 interactions, mitochondrial membrane potential, and AMPK activation; depletion of RARRES1 increases stem cell markers and anoikis resistance, effects reversed by CCP2 depletion or VDAC1 inhibition. |
Co-immunoprecipitation, siRNA knockdown (RARRES1, CCP2), VDAC1 inhibitor treatment, mitochondrial membrane potential assay, AMPK/energy balance assays, zebrafish metabolic phenotyping |
Oncotarget |
High |
30899431
|
| 2020 |
Soluble RARRES1, generated by proteolytic cleavage of its extracellular domain, is endocytosed by podocytes and interacts with and inhibits RIO kinase 1 (RIOK1), resulting in p53 activation and podocyte apoptosis; mutation of the cleavage site abolishes the apoptotic effect, and podocyte-specific RARRES1 overexpression in mice causes glomerular injury and albuminuria. |
Co-immunoprecipitation (sRARRES1-RIOK1), cleavage-site mutagenesis, podocyte endocytosis assay, apoptosis assay, podocyte-specific transgenic/knockout mice, transcriptomic analysis |
The Journal of clinical investigation |
High |
32634130
|
| 2018 |
RARRES1 depletion in epithelial cells causes global increase in lipid synthesis via de novo lipogenesis (DNL) by rewiring glucose metabolism; the increase in fatty acid availability supports mitochondrial fatty acid oxidation during starvation; RARRES1 expression is regulated by PPAR signaling. |
Non-targeted LC-MS lipidomics, FASN inhibitor (C75) rescue experiment, metabolic flux analysis, siRNA knockdown in breast and prostate epithelial cells |
PloS one |
Medium |
30557378
|
| 2017 |
RARRES1 overexpression in prostate cancer cell lines represses MAPK activation, induces autophagy (increases beclin, ATG3, LC3B-II), elevates SIRT1, inhibits mTOR, increases catalase, and inhibits angiogenesis in endothelial cells. |
cDNA overexpression, Western blot (autophagy markers, SIRT1, mTOR pathway), endothelial tube formation assay |
PloS one |
Low |
28678839
|
| 2019 |
TIG1/RARRES1 interacts with serine protease inhibitor SPINK2 in NT2/D1 testicular carcinoma cells; SPINK2 enhances TIG1-mediated suppression of uPA activity and EMT, while SPINK2 silencing alleviates TIG1-mediated cell migration and invasion suppression. |
Co-immunoprecipitation (TIG1-SPINK2), siRNA knockdown of SPINK2, uPA activity assay, EMT marker Western blot, migration and invasion assays |
BioMed research international |
Medium |
31886233
|
| 2024 |
Matrix metalloproteinase 23 (MMP23) is the podocyte-specific metalloproteinase responsible for cleaving RARRES1 to generate soluble RARRES1 (sRARRES1); AAV9-mediated knockdown of MMP23 abrogated sRARRES1 uptake in tubular cells in vivo and prevented RARRES1-driven glomerular and tubular injury. |
scRNA-seq to identify MMP23 expression, AAV9-mediated MMP23 knockdown in vivo, RARRES1 cleavage-mutant overexpression, histological assessment of kidney injury |
Kidney international |
High |
38697478
|
| 2024 |
sRARRES1 (soluble RARRES1) directly taken up by proximal tubular epithelial cells binds KHDRBS1, recruits Src kinase, and induces STAT3 phosphorylation at Tyr705, upregulating pro-fibrotic factors; proximal-tubule-specific Rarres1 knockout reduces kidney fibrosis, and STAT3/Src inhibition reverses the fibrotic phenotype. |
Mass spectrometry, co-immunoprecipitation with truncation mutants (sRARRES1-KHDRBS1-Src-pSTAT3), proximal-tubule-specific knockout mice (UUO and folic acid models), RARRES1-overexpressing mice, pharmacological STAT3/Src inhibition |
Journal of the American Society of Nephrology |
High |
41955023
|
| 2023 |
TIG1/RARRES1 interacts with VAC14 and inhibits insulin-induced mTORC1-p70 S6K activation in melanoma cells; TIG1 had no additional inhibitory effect on mTOR signaling in the absence of VAC14, indicating TIG1 suppresses mTOR primarily through VAC14, affecting PI(3,5)P2 rather than PI(4,5)P2 signaling. |
Co-immunoprecipitation (TIG1-VAC14), VAC14 knockdown epistasis, Western blot for mTORC1/p70 S6K/pAKT, cell proliferation assay |
Anticancer research |
Medium |
37247911
|
| 2022 |
Loss of Rarres1 in mice promotes follicular lymphoma development and impairs B cell activation, maturation, and differentiation into plasma cells; Rarres1-/- embryonic fibroblasts recapitulate in vitro defects in tubulin glutamylation and cell metabolism, confirming RARRES1 as a bona fide in vivo tumor suppressor. |
Constitutive Rarres1 knockout mouse model, flow cytometry (B cell differentiation), tumor histopathology, tubulin glutamylation assay, metabolic assays in primary fibroblasts |
International journal of biological sciences |
High |
35541897
|
| 2022 |
Tig1/Rarres1 acts as a cell-surface determinant of proximal positional identity during salamander limb regeneration; its overexpression causes proximal displacement of blastema cells and regeneration defects in distal elements, upregulates Prod1, and inhibits Hoxa13 and distal transcriptional networks. |
Single-cell RNA-seq, Tig1 overexpression and neutralization in salamander blastema, in situ hybridization for Prod1/Hoxa13, proximo-distal cell surface interaction assay |
Nature communications |
Medium |
35241664
|
| 2012 |
RARRES1 protein is secreted (as a soluble form) by NF1-derived plexiform neurofibroma Schwann cells but not by normal Schwann cells; all-trans retinoic acid modulates RARRES1 secretion in a dose-dependent manner. |
Secretome proteomics (SDS-PAGE + LC-MS/MS), conditioned media analysis, retinoic acid dose-response |
International journal of molecular sciences |
Medium |
22942771
|
| 2016 |
RARRES1 expression in basal-like triple-negative breast cancer is maintained by promoter hypomethylation and is driven by ALDH1A3-generated retinoic acid acting as RAR ligand; RARRES1 functions as a tumor suppressor in TNBC as shown by cell proliferation and tumor growth assays. |
Illumina HumanMethylation450 arrays, chromatin immunoprecipitation, siRNA/overexpression, cell proliferation assay, in vivo tumor growth |
Oncotarget |
Medium |
27286452
|
| 2024 |
TIG1/RARRES1 induces trophoblast senescence in preeclampsia through interaction with and activation of the LMNA/p53 axis; elevated TIG1 reduces trophoblast invasion in a co-culture system. |
Co-immunoprecipitation (TIG1-LMNA), transcriptomic sequencing of TIG1-overexpressing cells, senescence marker analysis (p16/p21/p53), trophoblast invasion co-culture assay |
Placenta |
Low |
39756181
|
| 2024 |
RARRES1 interacts with SPINK2 in hepatocellular carcinoma cells; RARRES1/SPINK2 co-expression suppresses HCC cell proliferation and migration and increases sensitivity to lenvatinib. |
Co-immunoprecipitation (RARRES1-SPINK2), gain- and loss-of-function overexpression/knockdown, proliferation and migration assays, in vivo tumor model |
Biology direct |
Medium |
38388961
|