DNMT3B is a de novo DNA methyltransferase responsible for CpG methylation at centromeric repeats, germline genes, and intragenic regions to maintain genomic stability . Antibodies targeting DNMT3B facilitate:
Detection of protein expression levels in tissues/cell lines
Localization studies via immunohistochemistry (IHC) and immunofluorescence
Functional analyses through knockdown or overexpression experiments
In oral squamous cell carcinoma (OSCC):
DNMT3B overexpression correlates with lymph node metastasis (83% recurrence in DNMT3B+ vs. 46% in DNMT3B− cases)
Silencing DNMT3B reduces:
Critical for maintaining methylation at germline gene promoters (e.g., interacts with E2F6 repressor)
Localizes to nuclei in BG01V embryonic stem cells, co-expressed with pluripotency marker SSEA-4
Therapeutic strategies under investigation:
DNMT3B inhibitors: Reduce tumor growth and angiogenesis in preclinical models
Methylation profiling: DNMT3B activity correlates with IL-6 signaling, suggesting combinational targeting
Best practices for antibody validation include: