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Analysis of Yersinia enterocolitica Effector Translocation into Host Cells Using Beta-lactamase Effector Fusions
Published on: October 13, 2015
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Translocation-generated ITK-FER and ITK-SYK fusions induce STAT3 phosphorylation and CD69 expression
Narmeen N Fathi1, Dara K Mohammad2, André Görgens3
1Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86, Huddinge, Sweden; Department of Microbiology, College of Medicine, University of Sulaimani, Sulaimaniyah, Kurdistan Region-Iraq, Iraq.
Biochemical and Biophysical Research Communications
|September 16, 2018
Summary
New fusion kinases, ITK-FER and ITK-SYK, drive Peripheral T Cell Lymphoma (PTCL) by increasing STAT3 phosphorylation and CD69 activation. Targeting downstream pathways offers novel cancer therapy options.
Area of Science:
- Oncology
- Molecular Biology
- Immunology
Background:
- Mutations in protein tyrosine kinases (PTKs) are common drivers of cancer progression.
- Gene translocations can create chimeric PTKs with oncogenic potential.
Purpose of the Study:
- To investigate the role of ITK-FER and ITK-SYK fusion kinases in Peripheral T Cell Lymphoma (PTCL) signaling.
- To identify downstream targets and activation markers associated with these fusion kinases.
Main Methods:
- Characterization of ITK-FER and ITK-SYK fusion proteins in PTCL.
- Analysis of tyrosine phosphorylation events and downstream signaling pathways.
- Assessment of T-cell activation markers like CD69.
Main Results:
- ITK-FER and ITK-SYK induce significant tyrosine phosphorylation.
- STAT3 is a key downstream target, showing high phosphorylation by these fusion kinases.
- The T-cell activation marker CD69 is significantly elevated.
Conclusions:
- ITK-FER and ITK-SYK play a crucial role in PTCL pathogenesis.
- Targeting STAT3 or other downstream effectors represents a potential therapeutic strategy for PTCLs driven by fusion PTKs.
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