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Cited by 198

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Protection against ischemic brain injury by protein therapeutics

Open access
Asoh, Sadamitsu, Ohsawa, Ikuroh, Mori, Takashi, Katsura, Ken-ichiro, Hiraide, Tomoharu, Katayama, Yasuo, Kimura, Megumi, Ozaki, Daiya, Yamagata, Kumi, Ohta, Shigeo·2002·Proceedings of the National Academy of Sciences

Abstract

Preventing massive cell death is an important therapeutic strategy for various injuries and disorders. Protein therapeutics have the advantage of delivering proteins in a short period. We have engineered the antiapoptotic bcl-x gene to generate the super antiapoptotic factor, FNK, with a more powerful cytoprotective activity. In this study, we fused the protein transduction domain (PTD) of the HIV/Tat protein to FNK and used the construct in an animal model of ischemic brain injury. When added into culture media of human neuroblastoma cells and rat neocortical neurons, PTD-FNK rapidly transduced into cells and localized to mitochondria within 1 h. It protected the neuroblastomas and neurons against staurosporine-induced apoptosis and glutamate-induced excitotoxicity, respectively. The cytoprotective activity of PTD-FNK was found at concentrations as low as 0.3 pM. Additionally, PTD-FNK affected the cytosolic movement of calcium ions, which may relate to its neuroprotective action. Immunohistochemical analysis revealed that myc-tagged PTD-FNK (PTD-myc-FNK) injected i.p. into mice can have access into brain neurons. When injected i.p. into gerbils, PTD-FNK prevented delayed neuronal death in the hippocampus caused by transient global ischemia. These results suggest that PTD-FNK has a potential for clinical utility as a protein therapeutic strategy to prevent cell death in the brain.

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Metadata

Authors
Asoh, S., Ohsawa, I., Mori, T., Katsura, K.-I., Hiraide, T., Katayama, Y., Kimura, M., Ozaki, D., Yamagata, K., & Ohta, S.
Venue
Proceedings of the National Academy of Sciences
Published
2002-12-10
Volume
99
Issue
26
Pages
17107-17112
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1968479682
Cited by
198
References
1
FWCI
7.34
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Protection against ischemic brain injury by protein therapeutics. https://app.cochat.ai/papers/10.1073/pnas.262460299
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Asoh, S., Ohsawa, I., Mori, T., Katsura, K.-I., Hiraide, T., Katayama, Y., Kimura, M., Ozaki, D., Yamagata, K., & Ohta, S. (2002). Protection against ischemic brain injury by protein therapeutics. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.262460299

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