Death-associated protein kinase 1 is an enzyme that in humans is encoded by the DAPK1 gene. Death-associated protein kinase 1 is a positive mediator of gamma-interferon induced programmed cell death. DAPK1 encodes a structurally unique 160-kD calmodulin dependent serine-threonine kinase that carries 8 ankyrin repeats and 2 putative P-loop consensus sites. It is a tumor suppressor candidate. In melanocytic cells DAPK1 gene expression may be regulated by MITF. Depletion of DAPK1 results in inhibition of tumor cell count and volume growth in cellular and animal models of triple receptor-negative breast cancer, from individuals with p53-mutant cancers. This has not been demonstrated in actual patients.
Background References
1. Li T et al. Dapk1 improves inflammation, oxidative stress and autophagy in LPS-induced acute lung injury via p38MAPK/NF-κB signaling pathway. Mol Immunol. 2020 Apr
2. Movahhed P et al. The impact of DAPK1 and mTORC1 signaling association on autophagy in cancer. Mol Biol Rep. 2022 Jun
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA601162) at 1/2,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Mouse IgG - HRP Secondary Antibody (HA1006) at 1/100,000 dilution was used for 1 hour at room temperature.
Immunohistochemical analysis of paraffin-embedded human lung carcinoma tissue with Mouse anti-DAP Kinase 1 antibody (HA601162) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA601162) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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