Claudin-18/CLDN18.2 Protein-VLP, Human (HEK293, GFP)

CLDN18-VLPs (Claudin 18 virus-like particles) play a crucial role in alveolar fluid homeostasis by modulating tight junction composition, affecting ion transport and solute permeability. They contribute to alveolarization and the paracellular epithelial barrier, affecting epithelial progenitor cell proliferation and organ size by controlling YAP1 subcellular localization. Claudin-18/CLDN18.2 Protein-VLP, Human (HEK293, GFP) is the recombinant human-derived Claudin-18/CLDN18.2 protein, expressed by HEK293, with GFP labeled tag.Formed in HEK293 cultures, these VLPs concentrate membrane proteins on the cell surface, producing high-concentration proteins ideal for immunization and antibody screening. Given the high immunogenicity of VLPs, the immunization protocol such as antigen dose, schedule, and adjuvant, requires optimization. It is not recommended for receptor-ligand interaction detection and SPR/BLI assay since there are other irrelevant membrane proteins of the host on the VLP envelope, and the receptor-ligand interaction will have strong background interference. High requirements for chips and experimental protocols are needed for SPR/BLI assays. If VLP control is required, it is recommended HY-P705435.

CLDN18-VLPs (Claudin 18 virus-like particles) play a crucial role in alveolar fluid homeostasis by regulating the composition of tight junctions in alveolar epithelial cells, impacting ion transport, and solute permeability, potentially through the modulation of actin cytoskeleton organization and beta-2-adrenergic signaling. Essential for lung alveolarization and the maintenance of the paracellular alveolar epithelial barrier, CLDN18-VLPs contribute to epithelial progenitor cell proliferation and organ size regulation by controlling the subcellular localization of YAP1 and restricting its target gene transcription. Additionally, CLDN18-VLPs act as a negative regulator of RANKL-induced osteoclast differentiation, possibly by influencing the subcellular distribution of TJP2/ZO-2 and participating in bone resorption in response to calcium deficiency. They mediate the osteoprotective effects of estrogen independently of RANKL signaling pathways. Furthermore, CLDN18-VLPs are implicated in maintaining the alveolar microenvironment homeostasis by regulating pH and subsequent T-cell activation, indirectly contributing to the limitation of C. neoformans infection.

Human

HEK293

P56856-2 (M1-V261)

51208

Solution.

Supplied as 0.2 μm filtered solution of PBS, pH7.4 with trehalose as protectant.

N/A.

Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping with dry ice.