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Cited by 314

The DOI matches its Crossref record; 235 of the 235 references it cites were found in a registry or an index.

Intracellular versus extracellular granzyme B in immunity and disease: challenging the dogma

Open access
Boivin, Wendy Anne, Cooper, Dawn Michelle, Hiebert, Paul Ryan, Granville, David James·2009·Laboratory Investigation

Abstract

The cytotoxic granzyme B (GrB)/perforin pathway has been traditionally viewed as a primary mechanism that is used by cytotoxic lymphocytes to eliminate allogeneic, virally infected and/or transformed cells. Although originally proposed to have intracellular and extracellular functions, upon the discovery that perforin, in combination with GrB, could induce apoptosis, other potential functions for this protease were, for the most part, disregarded. As there are 5 granzymes in humans and 11 granzymes in mice, many studies used perforin knockout mice as an initial screen to evaluate the role of granzymes in disease. However, in recent years, emerging clinical and biochemical evidence has shown that the latter approach may have overlooked a critical perforin-independent, pathogenic role for these proteases in disease. This review focuses on GrB, the most characterized of the granzyme family, in disease. Long known to be a pro-apoptotic protease expressed by cytotoxic lymphocytes and natural killer cells, it is now accepted that GrB can be expressed in other cell types of immune and nonimmune origin. To the latter, an emerging immune-independent role for GrB has been forwarded due to recent discoveries that GrB may be expressed in nonimmune cells such as smooth muscle cells, keratinocytes, and chondrocytes in certain disease states. Given that GrB retains its activity in the blood, can cleave extracellular matrix, and its levels are often elevated in chronic inflammatory diseases, this protease may be an important contributor to certain pathologies. The implications of sustained elevations of intracellular and extracellular GrB in chronic vascular, dermatological, and neurological diseases, among others, are developing. This review examines, for the first time, the multiple roles of GrB in disease pathogenesis.

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Metadata

Authors
Boivin, W. A., Cooper, D. M., Hiebert, P. R., & Granville, D. J.
Venue
Laboratory Investigation
Publisher
Elsevier BV
Published
2009-11
Volume
89
Issue
11
Pages
1195-1220
ISSN
0023-6837 (ISSN-L)
OpenAlex
W2012110635
Cited by
314
References
235
FWCI
5.28
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Intracellular versus extracellular granzyme B in immunity and disease: challenging the dogma. https://app.cochat.ai/papers/10.1038/labinvest.2009.91
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Boivin, W. A., Cooper, D. M., Hiebert, P. R., & Granville, D. J. (2009). Intracellular versus extracellular granzyme B in immunity and disease: challenging the dogma. Laboratory Investigation. https://doi.org/10.1038/labinvest.2009.91

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