Related Experiment Video
Updated: Jan 18, 2026

Pre-clinical Orthotopic Murine Model of Human Prostate Cancer
Published on: August 29, 2016
Drug Targets in Prostate Cancer: An Appetite for KLK2-Mediated Destruction
Steven Blinka1,2, Evan Y Yu1,2
1Division of Hematology and Oncology, Department of Medicine, University of Washington, Seattle, Washington.
Abstract:
Human kallikrein (KLK) 2 is a prostate cancer tissue-specific protein that is regulated by androgen receptor signaling. KLK2 was not previously recognized as a therapeutic target as it was shown to be a secreted serine protease with no evidence for localization to the cell surface. It has now been demonstrated that KLK2 is expressed on the cell surface and is targetable by various methodologies. See related article by Shen et al., p. 4543.
Insights
Human kallikrein 2 (KLK2), a prostate cancer protein, is now recognized as a cell surface target. This finding opens new therapeutic avenues for targeting prostate cancer through cell surface-based strategies.
Area of Science:
- Oncology
- Biochemistry
- Molecular Biology
Background:
- Human kallikrein (KLK) 2 is a protein specific to prostate cancer.
- KLK2 is regulated by androgen receptor signaling pathways.
- Previously, KLK2 was considered a secreted enzyme, not a cell surface target.
Purpose of the Study:
- To investigate the cellular localization of KLK2.
- To determine if KLK2 is a viable therapeutic target for prostate cancer.
Main Methods:
- Cell surface expression analysis of KLK2.
- Investigating KLK2 targetability using various methodologies.
Main Results:
- KLK2 is expressed on the cell surface.
- KLK2 is targetable through novel therapeutic strategies.
Conclusions:
- KLK2's cell surface expression redefines it as a potential therapeutic target.
- This discovery offers new avenues for prostate cancer treatment development.
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