PLK5 Antibody

Definition and Mechanism

The PLK5 antibody is a molecular probe designed to detect the presence and expression levels of Polo-like kinase 5 (PLK5), a member of the PLK family of serine/threonine kinases. PLKs are critical regulators of cell cycle progression, mitosis, and apoptosis. PLK5, unlike other family members (e.g., PLK1), lacks catalytic kinase activity but retains a functional Polo Box Domain (PBD), enabling interactions with phosphorylated proteins.

Key Features of PLK5 Antibodies:

• Type: Rabbit polyclonal antibodies targeting specific epitopes (e.g., N-terminal regions).

• Applications: Immunohistochemistry (IHC), Western blotting, and functional assays to study PLK5 in cancer tissues and cell models.

• Relevance: PLK5 antibodies are pivotal for understanding its tumor suppressor role, as demonstrated by its downregulation in cancers like NSCLC, glioblastoma, and ovarian carcinoma .

Applications in Cancer Research

PLK5 antibodies have been employed in diverse experimental frameworks to elucidate PLK5’s biological functions:

Research Findings: PLK5 as a Tumor Suppressor

Studies utilizing PLK5 antibodies reveal its role in cancer progression:

Validation and Cross-Platform Verification

PLK5 antibody-based findings are supported by:

• TCGA and GTEx Databases: Confirm PLK5 downregulation in cancers and its correlation with poor OS (P = 0.046) .

• Tissue Microarrays: Consistent detection of reduced PLK5 in tumor vs. normal tissues across cancer types .

• Functional Assays: PLK5 overexpression in glioblastoma cells induces apoptosis, validating its tumor suppressor function .