Cited by 318T-cell and B-cell ImmunologyProtein Kinase Regulation and GTPase SignalingNF-κB Signaling Pathways

BLNK Required for Coupling Syk to PLCγ2 and Rac1-JNK in B Cells

Open access
Ishiai, Masamichi, Kurosaki, Mari, Pappu, Rajita, Okawa, Katsuya, Ronko, Irina, Fu, Chong, Shibata, Masao, Iwamatsu, Akihiro +2 more·1999·Immunity

Abstract

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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Crossref · 10.1016/s1074-7613(00)80012-6

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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
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
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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