pkd-2 Antibody

Applications of PKD-2 Antibody in Research

PKD-2 antibodies are critical for:

• Western Blot (WB): Detects endogenous PKD2 at ~110 kDa in human, mouse, and rat tissues .

• Immunohistochemistry (IHC): Localizes PKD2 in renal tubules, cilia, and vascular endothelia .

• Flow Cytometry: Quantifies PKD2 expression in fixed/permeabilized cells .

• Functional Studies: Validates PKD2’s role in calcium signaling, cystogenesis, and mitochondrial bioenergetics .

Role in ADPKD Pathogenesis

• Cyst Formation: PKD2 mutations disrupt polycystin-2’s interaction with polycystin-1, leading to aberrant cell proliferation and renal cyst growth .

• Calcium Signaling: PKD2 regulates intracellular Ca²⁺ levels via ciliary and endoplasmic reticulum (ER) channels, impacting mitochondrial metabolism .

Mechanistic Insights

• miRNA Regulation: PKD2 mRNA contains miR-17 binding sites; deletion of these motifs rescues mitochondrial dysfunction in PKD1-mutant models .

• Structural Interactions: PKD2 forms homodimers and heterodimers with PKD1, stabilizing both proteins and enabling coordinated signaling .

Functional Assays

• Ion Channel Activity: Reconstituted PKD2 in lipid bilayers shows Ca²⁺-permeable channel activity inhibited by La³⁺, Gd³⁺, and amiloride .

• Subcellular Localization: PKD2 localizes to primary cilia, ER, and plasma membrane, with roles in mechanosensation and left-right asymmetry .

Technical Considerations

• Validation: Antibody specificity confirmed via knockout controls and peptide blocking .

• Challenges: Cross-reactivity with non-target proteins (e.g., PKD1) varies by clone; Cell Signaling’s #8188 shows no cross-reactivity .

Future Directions

• Therapeutic Targeting: Modulating PKD2 expression or channel activity could mitigate cyst growth in ADPKD .

• Multi-Omics Integration: Linking PKD2 mutations to metabolic reprogramming in renal cells .