| 2016 |
BCAM (basal cell adhesion molecule) on tumor cells binds LAMA5 on endothelial cells, mediating adhesion of KRAS-mutant colorectal cancer cells specifically to endothelial cells (but not pericytes or hepatocytes); genetic suppression or biochemical inhibition of either BCAM or LAMA5 impaired this adhesion, and BCAM-mimic peptides inhibited metastasis in preclinical models. |
Adhesion assays, shRNA/genetic suppression, BCAM-mimic peptide functional inhibition, phage display identification, in vivo mouse metastasis models |
Clinical Cancer Research |
High |
27143691
|
| 2016 |
MMP1 secreted by oncogenically transformed (H-Ras) epithelial cells cleaves LAMA5, generating internal and C-terminal proteolytic fragments that promote endothelial cell angiogenesis (vessel length and branching) in a VEGF-independent manner; this pro-angiogenic effect is blocked by anti-integrin αvβ3 antibodies on endothelial cells. |
MMP1 knockdown (shRNA), secretome proteomics, in vitro angiogenesis assays, integrin antibody inhibition, in vivo xenograft tumors |
Scientific Reports |
High |
27324842
|
| 2012 |
Laminin α5 (LAMA5) promotes PI3K signaling and inhibits Wnt signaling in intestinal epithelial and mesenchymal cells; loss of LAMA5 in knockout mice causes conflicting signals that alter cell adhesion, migration, and differentiation, mechanistically linked by RNA profiling and cell culture knockdown experiments. |
Lama5 knockout mouse RNA profiling, cell culture knockdown, signaling pathway analysis (PI3K/Akt and Wnt pathway readouts) |
PLoS One |
High |
22666383
|
| 2019 |
Tumor-derived LAMA5 (laminin 511) in colorectal liver metastases is induced by TNFα/NFκB signaling from CD11b+ myeloid-cell-conditioned medium; LAMA5 downregulation by shRNA impaired hepatic metastatic growth, reduced intratumoral vessel branching, and increased Notch pathway gene expression in metastasis-derived endothelia, indicating LAMA5 promotes branching angiogenesis and suppresses Notch signaling. |
shRNA knockdown in cancer cells, qPCR with human-specific primers, orthotopic hepatic metastasis mouse models, Notch pathway gene expression analysis, conditioned medium experiments |
Cancers |
High |
31064120
|
| 2017 |
The heterozygous LAMA5 mutation p.V3140M perturbs protein cleavage-derived peptide levels and disrupts epithelial-mesenchymal signaling, causing upregulation of Sonic hedgehog (SHH) and GLI1 and strong inhibition of ECM proteins COL1A1, MMP1, and MMP3 in patient-derived cells; a knock-in mouse model recapitulated similar tissue changes. |
Patient-derived cell expression studies, WES/RNAseq, skin biopsy morphology, knock-in mouse model generation and analysis |
Journal of Medical Genetics |
Medium |
28735299
|
| 2017 |
The LAMA5 variant p.Arg2659Trp causes decreased binding of laminin α5 to SV2A (synaptic vesicle glycoprotein 2A), impairs laminin-521 cell-adhesion, and reduces cell projection support in primary neuronal cultures, leading to profound reduction of neuromuscular junction endplate potential quantal content and presynaptic terminal degeneration. |
Expression studies in neuronal cells, binding assays (laminin α5 to SV2A), cell-adhesion assays, primary neuronal culture, electrophysiology (repetitive nerve stimulation, endplate recordings), electron microscopy |
American Journal of Medical Genetics Part A |
High |
28544784 29377152
|
| 2020 |
Loss of LAMA5 in skeletal cells disrupts a β1 integrin–PYK2–FYN focal adhesion complex, impairing non-canonical focal adhesion signaling in cartilage, negatively impacting actin cytoskeleton organization, vinculin localization, and WNT signaling, and causing a distinct bent bone dysplasia. |
Exome sequencing, Sanger confirmation, qPCR, western blot, immunohistochemistry, luciferase WNT reporter assay, migration/wound healing assays, patient cell studies |
EBioMedicine |
High |
33242826
|
| 2021 |
A missense mutation (E884G) in the L4a domain of LAMA5 reduces LAMA5 protein levels in vivo and significantly reduces laminin 521 heterotrimer assembly in vitro; homozygous mice develop nephrotic syndrome with glomerular ultrastructural changes, and proteomic analysis revealed altered glomerular ECM composition. |
Mouse knock-in model, in vitro heterotrimer assembly assay, proteomics of glomerular ECM, histology, ultrastructural analysis |
Kidney International |
High |
34774562
|
| 2021 |
Truncating LAMA5 variants produce shorter laminin α5 proteins that still form trimers with laminin β1 and γ1 chains, as demonstrated by in vitro heterotrimer formation assays, establishing that partial truncation does not abolish trimerization but causes infantile nephrotic syndrome. |
In vitro heterotrimer formation assay, targeted next-generation sequencing, clinical phenotyping |
Kidney360 |
Medium |
35419533
|
| 2021 |
Canonical Wnt/β-catenin signaling regulates submandibular gland branching morphogenesis through modulation of Lama5 levels; FGF signaling acts upstream as a negative regulator of canonical Wnt, and Wnt inhibition promotes while Wnt overactivation suppresses epithelial branching, with Lama5 as a downstream effector. |
Embryonic mouse SMG organ culture, morphogenesis assays, gene expression analysis, Wnt pathway inhibitor/activator (Wnt3a) treatments |
International Journal of Developmental Biology |
Medium |
33629734
|
| 2018 |
LAMA5 knockdown in human umbilical vein endothelial cells (HUVECs) decreases proliferation, migration, and vascular tube formation and increases apoptosis; mechanistically, reduced LAMA5 inhibits PI3K downstream p-AKT and p-mTOR protein expression. |
siRNA knockdown, CCK-8 proliferation assay, flow cytometry apoptosis, transwell migration, western blot of PI3K/AKT/mTOR pathway |
Journal of Maternal-Fetal and Neonatal Medicine |
Medium |
30200802
|
| 2023 |
CAF-secreted LAMA5 signals through integrin α4 and STAT3 to drive acinar-to-ductal metaplasia in pancreatic cells; proteomic and transcriptomic integration identified the LAMA5/integrin α4/STAT3 axis, validated by KD experiments in cell lines, acinar explant co-cultures, and mouse models. |
CAF co-culture, conditioned medium experiments, LC-MS/MS proteomics, RNA-seq, confocal microscopy, immunoblotting, qRT-PCR, organoid and explant models |
Gastroenterology |
High |
38154529
|
| 2023 |
LAMA5 knockdown in ovarian cancer cells inhibits cell proliferation, migration, and invasion in vitro and in vivo and reduces expression of EMT markers and Notch signaling pathway-related markers, placing LAMA5 upstream of Notch and EMT programs. |
Lentiviral shRNA knockdown, in vitro proliferation/migration/invasion assays, in vivo xenograft, western blot/qPCR for Notch and EMT markers |
FASEB Journal |
Medium |
37527216
|
| 2022 |
A heterozygous LAMA5 variant (p.Val3687Met) impairs secretion of the laminin α5 LG4-5 domain in a cell-type-dependent manner; knockin mice develop FSGS-like glomerulopathy with reduced laminin α5 and increased glomerular vinculin levels, indicating that impaired LAMA5 secretion and consequent defective cell adhesion underlie the glomerulopathy. |
In vitro secretion assay of LG4-5 domain, knockin mouse model (heterozygous and homozygous), histopathology, immunofluorescence for laminin α5 and vinculin |
JCI Insight |
Medium |
36173685
|
| 2011 |
Human LAMA5 transgene expression in mouse kidney suppresses endogenous mouse Lama5 mRNA and laminin α5 protein deposition, demonstrating the existence of a laminin expression monitor in kidney that regulates overall production of basement membrane protein; human laminin α5 is deposited from both glomerular endothelial cells and podocytes. |
Transgenic mice (BAC-based human LAMA5), immunoelectron microscopy, northern/western blot, mRNA quantification |
PLoS One |
Medium |
21915268
|
| 2023 |
LAMA5 silencing in murine palatal process cells causes cleft palate by inhibiting cell proliferation (reduced ki67, cyclin D1) and promoting apoptosis (increased caspase 3), and interferes with the SHH signaling pathway (reduced GLI1) without affecting EMT markers or Shh/Ptch1 expression. |
shRNA adenovirus transfection of E13.5 mouse palatal process, ex vivo organ culture fusion assay, PCR, western blot |
Biomedical Journal |
Medium |
37390938
|
| 2025 |
Glucocorticoid receptor (GR) directly targets LAMA5 as a transcriptional target gene; corticosterone-GR-LAMA5 axis mediates chronic psychological stress-induced cardiomyocyte hypertrophy, validated in vivo and in vitro. |
Animal stress models, in vitro cardiomyocyte experiments, GR target gene identification (confirmed in vivo and in vitro) |
Advanced Science |
Medium |
40642838
|
| 2025 |
MAZ (Myc-associated zinc finger protein) transcription factor binds the LAMA5 promoter and activates LAMA5 transcription; LAMA5 in turn activates STAT3 signaling to promote gastric cancer cell proliferation and migration. |
ChIP assay, luciferase reporter assay, shRNA knockdown of MAZ and LAMA5, STAT3 activator rescue (Colivelin), CCK-8, colony formation, wound healing, Transwell assays, in vivo tumor models |
Functional & Integrative Genomics |
Medium |
40072648
|
| 2025 |
Loss of LAMA5 in human urine-derived stem cells impairs chondrogenesis and disrupts WNT signaling; WNT7A and FLI1 are key dysregulated genes, and pharmacologic WNT activation (LiCl) partially restores their expression, indicating LAMA5 is required for ECM–WNT signaling integration during chondrogenesis. |
CRISPR/Cas9 LAMA5 knockout, 2D/3D chondrogenic differentiation, bulk RNA-seq, WGCNA, LiCl pharmacologic rescue, qPCR |
bioRxivpreprint |
Medium |
|
| 2025 |
In zebrafish, laminin α5 (Lama5) interacts with integrin α6b to maintain apicobasal polarity and epithelial identity in basal epidermal cells; loss of Lama5 reduces E-cadherin localization and promotes mesenchymal traits, and the integrin α6b mutant phenotype is not exacerbated in the double mutant, placing Lama5 and integrin α6b in the same pathway. |
Zebrafish lama5 loss-of-function, integrin α6b mutant, double mutant epistasis, confocal imaging of E-cadherin and polarity markers |
bioRxivpreprint |
Medium |
|
| 2025 |
In zebrafish posterior lateral line primordium, laminin α5 (Lama5) is a key basement membrane component underlying migrating epithelial cells; simultaneous depletion of lama5 and itga6b (integrin α6b) markedly decreases collective migration velocity and ultimately blocks migration, whereas loss of lama5 alone compromises basement membrane integrity without impairing migration, revealing redundancy between Lama5 and integrin α6b adhesion systems. |
Zebrafish lama5 and itga6b loss-of-function, double mutant/morphant analysis, live imaging of collective cell migration |
bioRxivpreprint |
Medium |
|
| 2025 |
In cerebral blood vessels, endothelial-specific loss of laminin α5 (Tek-cre:Lama5-/-) alters vascular zonation and junctional protein expression; compensatory upregulation of laminin α5 in Lama4-/- vessels enhances expression of junctional proteins (Ocln, Cldn5) and promotes vessel contractility, demonstrating that laminin α4/α5 ratios regulate functional zonation between arterioles, capillaries, and postcapillary venules. |
Single-cell RNA sequencing of cerebral blood vessels from conditional KO and Lama4-/- mice, in vitro and in vivo studies, transcriptomic profiling |
bioRxivpreprint |
Medium |
|
| 2024 |
Luminal deletion of Lama5 in MMTV-PyMT mice markedly reduces emergence of early mammary hyperplasias and shifts phenotype from mature HR+ luminal epithelial to HR+ progenitor; biallelic Lama5 deletion causes widespread ECM and FGF signaling alterations including overexpression of Fgfr2, and inhibition of FGF receptors induces apoptosis specifically in Lama5-deleted organoids, revealing an ECM–FGF signaling interplay in mammary tumorigenesis. |
Conditional Lama5 deletion (prepubertal luminal), MMTV-PyMT mouse model, organoid culture, FGF receptor inhibitor treatment, gene expression analysis |
bioRxivpreprint |
Medium |
|