BLNK Required for Coupling Syk to PLCγ2 and Rac1-JNK in B Cells
Open accessAbstract
Signaling through the B cell receptor (BCR) is essential for B cell function and development. Despite the key role of Syk in BCR signaling, little is known about the mechanism by which Syk transmits downstream effectors. BLNK (B cell LiNKer protein), a substrate for Syk, is now shown to be essential in activating phospholipase C (PLC)gamma 2 and JNK. The BCR-induced PLC gamma 2 activation, but not the JNK activation, was restored by introduction of PLC gamma 2 membrane-associated form into BLNK-deficient B cells. As JNK activation requires both Rac1 and PLC gamma 2, our results suggest that BLNK regulates the Rac1-JNK pathway, in addition to modulating PLC gamma 2 localization.
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- Authors
- Ishiai, M., Kurosaki, M., Pappu, R., Okawa, K., Ronko, I., Fu, C., Shibata, M., Iwamatsu, A., Chan, A. C., & Kurosaki, T.
- Affiliations
- Kansai Medical University (JP)
- Howard Hughes Medical Institute (US)
- Kirin (Japan) (JP)
- Corresponding author
- Kurosaki, Tomohiro
- Venue
- Immunity
- Publisher
- Elsevier BV
- Published
- 1999-01
- Volume
- 10
- Issue
- 1
- Pages
- 117-125
- ISSN
- 1074-7613 (ISSN-L)
- OpenAlex
- W2070868640
- Semantic Scholar
- b5f8e1abfbc38b84430dd32ea4166f9e793a7fdc
- Cited by
- 318
- References
- 50
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 5 · 2023: 1 · 2022: 6 · 2021: 3 · 2020: 7 · 2019: 4 · 2018: 7 · 2017: 4 · 2016: 7 · 2015: 7 · 2014: 4 · 2013: 4 · 2012: 10
- FWCI
- 11.75
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Immunity (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (R01AI42787, R01CA71516)
- Takeda Science Foundation
- Ministry of Education, Culture, Sports, Science and Technology
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
- Keywords
- BLNK, B cell receptor signaling, Syk, PLCγ2, Rac1, JNK, B cells
- MeSH terms
- Syk Kinase, Amino Acid Sequence, Animals, B-Lymphocytes, Carrier Proteins, Cell Membrane, Chickens, Enzyme Activation, Enzyme Precursors, Humans, Isoenzymes, Molecular Sequence Data, Type C Phospholipases, Phosphoproteins, Phosphorylation, Protein-Tyrosine Kinases, Receptors, Antigen, B-Cell, Recombinant Fusion Proteins, Tyrosine, Calcium-Calmodulin-Dependent Protein Kinases, ras Proteins, GTP-Binding Proteins, Calcium Signaling, rac GTP-Binding Proteins, Mitogen-Activated Protein Kinases, Intracellular Signaling Peptides and Proteins, JNK Mitogen-Activated Protein Kinases, Adaptor Proteins, Signal Transducing, Mice, Phospholipase C gamma
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