Abstract:
BACKGROUND INFORMATION:Claudin-1 (CLDN1) is a four-span transmembrane protein localised at cell-cell tight junctions (TJs), playing an important role in epithelial impermeability and tissue homoeostasis under physiological conditions. Moreover, CLDN1 expression is up-regulated in several cancers, and the level of CLDN1 expression has been proposed as a prognostic marker of patient survival. RESULTS:Here, we generated and characterised a novel reporter cell line expressing endogenous fluorescent levels of CLDN-1, allowing dynamic monitoring of CLDN-1 expression levels. Specifically, a hepatocellular carcinoma Huh7.5.1 monoclonal cell line was bioengineered using CRISPR/Cas9 to endogenously express a fluorescent TagRFP-T protein fused at the N-terminus of the CLDN1 protein. These cells were proved useful to measure CLDN1 expression and distribution in live cells. However, the cells were resistant to hepatitis C virus (HCV) infection, of which CLDN1 is a viral receptor, while retaining permissiveness to VSV-G-decorated pseudoparticles. Nonetheless, the TagRFP-CLDN1+/+ cell line showed expected CLDN1 protein localisation at TJs and the cell monolayer had similar impermeability and polarisation features as its wild-type counterpart. Finally, using fluorescence recovery after photobleaching (FRAP) approaches, we measured that the majority of endogenous and overexpressed TagRFP-CLDN1 diffuses rapidly within the TJ, whereas half of the overexpressed EGFP-CLDN1 proteins were stalled at TJs. CONCLUSIONS:The Huh7.5.1 TagRFP-CLDN1+/+ edited cell line showed physiological features comparable to that of non-edited cells, but became resistant to HCV infection. Our data also highlight the important impact of the fluorescent protein chosen for endogenous tagging. SIGNIFICANCE:Although HCV-related studies may not be achieved with these cells, our work provides a novel tool to study the cell biology of TJ-associated proteins and a potential screening strategy measuring CLDN1 expression levels.
journal_name
Biol Celljournal_title
Biology of the cellauthors
Clément CMH,Deffieu MS,Dorobantu CM,Baumert TF,Ayala-Nunez NV,Mély Y,Ronde P,Gaudin Rdoi
10.1111/boc.201900085subject
Has Abstractpub_date
2020-05-01 00:00:00pages
140-151issue
5eissn
0248-4900issn
1768-322Xjournal_volume
112pub_type
杂志文章abstract::The ciliated protozoan Paramecium harbours a particularly large diversity of microtubule networks, ranging from the elaborate and stable ciliary axonemes and basal bodies to very dynamic cytoplasmic, cortical or intranuclear arrays. Their organization and individual cycle of assembly/disassembly are well known and ext...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/s0248-4900(97)89840-1
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND INFORMATION:Caspase-dependent and -independent death mechanisms are involved in apoptosis in a variety of human carcinoma cells treated with antineoplastic compounds. Our laboratory has reported that p53 is a key contributor of mitochondrial apoptosis in cervical carcinoma cells after staurosporine exposure....
journal_title:Biology of the cell
pub_type: 杂志文章
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更新日期:2009-06-04 00:00:00
abstract::Infection with Mycobacterium ulcerans results in a necrotising skin disease known as a Buruli ulcer, the pathology of which is directly linked to the bacterial production of the toxin mycolactone. Recent studies have identified the protein translocation machinery of the endoplasmic reticulum (ER) membrane as the prima...
journal_title:Biology of the cell
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更新日期:2018-11-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/j.1768-322x.1984.tb00309.x
更新日期:1984-01-01 00:00:00
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journal_title:Biology of the cell
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doi:10.1016/j.biolcel.2003.11.009
更新日期:2004-03-01 00:00:00
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journal_title:Biology of the cell
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doi:10.1111/boc.201300013
更新日期:2013-07-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/boc.201300063
更新日期:2014-05-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1042/BC20060012
更新日期:2006-10-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/j.1768-322x.1996.tb00953.x
更新日期:1996-01-01 00:00:00
abstract::The water permeability of collecting ducts is greatly increased by the antidiuretic hormone, vasopressin (VP). Freeze-fracture studies were carried out to test if this permeability increase is associated with the appearance of intramembrane particle (IMP) aggregates and whether increased doses of VP lead to an increas...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1042/BC20060060
更新日期:2007-02-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract::Using gold labelled neoglycoproteins containing either alpha-D-glucose, N-acetyl-beta-D-glucosamine, alpha-D-mannose, 6-phospho-alpha-D-mannose, and alpha-L-fucose (BSA), we investigated their intranuclear binding sites in the TG human cell line. Although gold-labelled BSA did not give any noticeable labelling, the pr...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/j.1768-322x.1990.tb00007.x
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND INFORMATION:TSPO (translocator protein), previously known as PBR (peripheral-type benzodiazepine receptor), is a ubiquitous 18 kDa transmembrane protein that participates in diverse cell functions. High-affinity TSPO ligands are best known for their ability to stimulate cholesterol transport in organs synthe...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1042/BC20070157
更新日期:2008-07-01 00:00:00
abstract::Human pancreatic ductal cells of the Capan 1 cell line differentiate progressively during growth. After the exponential growth phase, the cells elongate and become polarized with their apical poles covered by microvilli and separated from the basolateral pole by tight junctions. In this stationary phase, they form dom...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/s0248-4900(94)80004-9
更新日期:1994-01-01 00:00:00
abstract::The pH-related change in morphology of vinblastine (VLB)-induced paracrystals formed in Chinese hamster ovary (CHO) cells was examined immunohistochemically in order to determine both the mechanism of tubulin crystallization and the influence of acidic pHs on cytoskeletal microtubules. Lowering the extracellular pH (p...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(94)90066-3
更新日期:1994-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/j.1768-322x.1987.tb00558.x
更新日期:1987-01-01 00:00:00
abstract::Alpha 2-macroglobulin (alpha 2M) is a plasma inhibitor of proteinases, the steric mechanism of which is based on a considerable conformational change. The typical and distinct H-like shape of alpha 2M-chymotrypsin (alpha 2M-chy) complexes seen by electron microscopy led us to an ultrastructural study of the binding of...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(88)90092-5
更新日期:1988-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(91)90054-q
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND INFORMATION:The role of the LIM-domain-containing protein Ajuba was initially described in cell adhesion and migration processes and recently in mitosis as an activator of the Aurora A kinase. RESULTS:In the present study, we show that Ajuba localizes to centrosomes and kinetochores during mitosis. This loc...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1042/BC20080060
更新日期:2009-04-01 00:00:00
abstract::The communication of calcium signals between cells is known to be operative between neurons where these signals integrate intimately with electrical and chemical signal communication at synapses. Recently, it has become clear that glial cells also exchange calcium signals between each other in cultures and in brain sl...
journal_title:Biology of the cell
pub_type: 杂志文章,评审
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更新日期:2004-02-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/boc.201500032
更新日期:2015-09-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(90)90340-9
更新日期:1990-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(92)90026-w
更新日期:1992-01-01 00:00:00
abstract::Antidiuretic hormone induces, in the apical plasma membrane of amphibian urinary bladder epithelial cells, the exocytotic insertion of intramembranous particle aggregates that probably contain water channels. Purification of the apical membrane is a way to characterize the aggregates. The isolation of such purified me...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND INFORMATION:The ribonucleases (RNases) constitute a heterogeneous group of enzymes, which exert diverse and specific biological functions. Several RNases have been shown to control gene expression and cell differentiation. RNASET2, a novel member of the Rh/T2/S family of RNases, exerts micro-environmental co...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/boc.201100092
更新日期:2012-01-01 00:00:00
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journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1111/boc.201400063
更新日期:2015-05-01 00:00:00
abstract::One of the initial events required for the expression of cartilage-specific macromolecules in monolayer cultures is the reversion to the initial round shape of chondrocytes. Thus, considerable research efforts have focused on developing reliable procedures to maintain a round morphology of cultured chondrocytes. Our s...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1016/0248-4900(96)81303-7
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND:Integrins are transmembrane alphabeta heterodimer receptors that function as structural and functional bridges between the cytoskeleton and ECM (extracellular matrix) molecules. The RGD (arginine-glycine-aspartate tripeptide motif)-dependent integrin alpha8beta1 has been shown to be involved in various cell ...
journal_title:Biology of the cell
pub_type: 杂志文章
doi:10.1042/BC20090060
更新日期:2009-09-14 00:00:00