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Cited by 170

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Missense Mutations in the Progranulin Gene Linked to Frontotemporal Lobar Degeneration with Ubiquitin-immunoreactive Inclusions Reduce Progranulin Production and Secretion

Open access
Shankaran, Sunita S., Capell, Anja, Hruscha, Alexander T., Fellerer, Katrin, Neumann, Manuela, Schmid, Bettina, Haass, Christian·2008·Journal of Biological Chemistry

Abstract

Loss of function mutations in progranulin cause tau-negative frontotemporal lobar degeneration with ubiquitin-positive inclusions. A major protein component of these inclusions is TDP-43, which becomes hyperphosphorylated, ubiquitinated, and cleaved to generate C-terminal fragments, which apparently translocate from nuclei to the cytoplasm. Most progranulin mutations are nonsense mutations resulting in nonsense-mediated mRNA decay and consequently reduced progranulin protein levels. However, some missense mutations are described that occur within the signal sequence and mature progranulin. We now demonstrate that a progranulin mutation located within the signal sequence (PGRN A9D) results in cytoplasmic missorting with extremely low expression. In contrast, two other progranulin mutations (PGRN P248L and R432C) are expressed as immature proteins but are inefficiently transported through and partially degraded within the secretory pathway, resulting in a significantly reduced secretion. Thus apparently all progranulin mutations cause reduced protein expression or secretion, although by different cellular mechanisms. To investigate a putative relationship between reduced expression of progranulin and TDP-43 relocalization and deposition, we down-regulated progranulin in human cell lines and in zebrafish. Upon reduction of progranulin, neither a major redistribution of TDP-43 nor proteolytic processing to disease-characterizing C-terminal fragments could be observed.

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Metadata

Authors
Shankaran, S. S., Capell, A., Hruscha, A. T., Fellerer, K., Neumann, M., Schmid, B., & Haass, C.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2008-01
Volume
283
Issue
3
Pages
1744-1753
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2077792283
Cited by
170
References
7
FWCI
9.62
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Missense Mutations in the Progranulin Gene Linked to Frontotemporal Lobar Degeneration with Ubiquitin-immunoreactive Inclusions Reduce Progranulin Production and Secretion. https://app.cochat.ai/papers/10.1074/jbc.m705115200
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Shankaran, S. S., Capell, A., Hruscha, A. T., Fellerer, K., Neumann, M., Schmid, B., & Haass, C. (2008). Missense Mutations in the Progranulin Gene Linked to Frontotemporal Lobar Degeneration with Ubiquitin-immunoreactive Inclusions Reduce Progranulin Production and Secretion. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m705115200

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