Pleiotropic Effects of Cathepsin D

Author(s): Aruna Vashishta, Sujata Saraswat Ohri, Vaclav Vetvicka.

Journal Name: Endocrine, Metabolic & Immune Disorders - Drug Targets

Volume 9 , Issue 4 , 2009

Abstract:

Over the past decades, the paradigm that lysosomal enzymes participate only in non-specific protein degradation during cell death has changed. Studies conducted both in cell cultures and in animals defined the role of these enzymes that includes cathepsin D (CD). Knockout mice revealed the role of CD in postnatal tissue homeostasis and remodeling. Mutations that abolish the CD enzymatic activity have been implicated in neural ceroid lipofuscinosis. Recent studies suggested a differential role of CD in regulation of apoptosis. The zymogen of CD, procathepsin D (pCD), is secreted by various cancer cells. Extensive studies showed that it acts as a mitogen on both cancer and stromal cells by stimulating their invasive and metastatic properties. Additional studies suggested that procathepsin D/CD is an independent prognostic factor in various cancers, leading to the investigations of pCD/CD as a potential target for designing anti-cancer therapy. In this review, we described the various forms of CD and their implications in numerous physiological as well as pathological conditions.

Keywords: Alzheimer's disease, apoptosis, cancer, cathepsin D, knockout mice, procathepsin D

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Article Details

VOLUME: 9
ISSUE: 4
Year: 2009
Page: [385 - 391]
Pages: 7
DOI: 10.2174/187153009789839174
Price: $58

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