Anti-UPK1A / Uroplakin 1A, clone MSVA-735M

Antibody in 1X PBS with 0.05% BSA, 0.05% sodium azide. UPK1A antibody recognizes Uroplakin 1A, a transmembrane protein encoded by the UPK1A gene and a key structural component of the apical surface of urothelial umbrella cells. UPK1A Antibody for IHC (clone MSVA-735M) is a mouse monoclonal antibody developed for immunohistochemical detection of this differentiation-associated membrane protein in formalin-fixed, paraffin-embedded tissues. Uroplakin 1A localizes predominantly to the apical plasma membrane of bladder, ureter, and renal pelvis umbrella cells, where it contributes to formation of specialized urothelial plaques that maintain epithelial barrier integrity and polarity.UPK1A antibody, also referred to as Uroplakin 1A antibody and UPIa antibody in the literature, targets a member of the uroplakin family of integral membrane proteins. Uroplakin 1A contains multiple transmembrane domains and extracellular loops that participate in heterodimer formation with Uroplakin 2. These heterodimers assemble into asymmetric unit membrane plaques that provide mechanical stability and reduce permeability of the urothelial surface to urine and solutes. This highly specialized membrane architecture protects underlying tissues from osmotic stress and toxic urinary metabolites.UPK1A expression is tightly restricted to terminally differentiated urothelial umbrella cells and is closely associated with epithelial maturation and maintenance of apical membrane specialization. Because of this tissue-specific expression pattern, Uroplakin 1A is widely used as a marker of urothelial lineage in normal tissue biology and tumor classification research. Distinct membranous staining in umbrella cells supports evaluation of urothelial differentiation status in IHC-based studies.In oncology research, UPK1A expression is frequently assessed in urothelial carcinoma and in the differential diagnosis of metastatic carcinomas of unknown primary origin. Detection of Uroplakin 1A supports urothelial differentiation, whereas most non-urothelial epithelial tumors lack expression. This selective distribution profile makes UPK1A antibody for IHC a valuable tool for studies of bladder cancer biology and epithelial lineage determination.The mouse monoclonal clone MSVA-735M enables visualization of Uroplakin 1A expression patterns in normal and neoplastic urothelial tissues for research use at NSJ Bioreagents.This antibody is also part of a broader collection of IHC antibodies validated by tissue microarray analysis, supporting consistent staining across normal and cancer tissues.