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Filename: drivers/Session_files_driver.php
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Function: require_once
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Filename: controllers/Detail.php
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Line: 249
Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Function: insertAPISummary
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Therapeutic responses following adoptive transfer of T cells correlate to levels of long-term T cell persistence. Lymphodepletion and exogenous γc cytokine administration can improve T cell persistence following adoptive transfer, but their effects are not uniform and toxicities are significant. To overcome these limitations, we designed a chimeric γc cytokine receptor (CγCR) composed of Interleukin-7 (IL-7) tethered to IL-7Rα/CD127 that confers exogenous cytokine independent, cell intrinsic, STAT5 cytokine signals. We additionally show that this design is modular in that the IL-2Rβ/CD122 cytoplasmic chain can be exchanged for that of IL-7Rα/CD127, enhancing Shc activity. When expressed in central memory-derived primary human CD8(+) CTL (T(E/CM)), these CγCRs signal according to their corresponding wild-type counterparts to support exogenous cytokine independent viability and homeostatic proliferation, while retaining full effector function. In vivo studies demonstrate that both CγCR-CD127(+) and CγCR-CD122(+) CD8(+) T((E/CM)) engraft in mice and persist in an absence of exogenous cytokine administration. Engrafted CγCR-CD127(+) CD8(+) T(E/CM) preferentially retain central memory marker expression in vivo demonstrating a dichotomy between CD127 versus CD122 signaling. Together, these results suggest that expression of CγCR in therapeutic T cells may aid in the in vivo persistence of these cells, particularly under conditions of limiting homeostatic cytokines.
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http://dx.doi.org/10.1016/j.molimm.2013.03.021 | DOI Listing |
Rheumatol Int
November 2011
Discovery Biology, Global Research and Development, St. Louis Laboratories, Pfizer Inc., 700 Chesterfield Parkway West, mail zone AA3C, Chesterfield, MO 63017, USA.
The aim of this study is to investigate the induction of interleukin-34 (IL-34) and macrophage colony-stimulating factor (M-CSF) mRNA by inflammatory cytokines and the involvement of mitogen-activated protein kinases (MAPKs) in this signaling pathway in human osteoblasts as both IL-34 and M-CSF bind to the same receptor c-FMS. Among four inflammatory cytokines [(IL-1β, IL-6, IL-17, and tumor necrosis factor-α (TNF-α)], IL-34 mRNA expression level was dramatically induced by IL-1β (17-fold) and TNF-α (74-fold). IL-1β and TNF-α activated the intracellular mitogen-activated protein kinases (MAPKs): p44/42 MAPK, p38, and c-Jun N-terminal kinase (JNK) as well as nuclear factor-κB (NF-κB) in osteoblasts.
View Article and Find Full Text PDFInt Immunopharmacol
October 2010
Discovery Biology, Global Research and Development, St. Louis Laboratories Pfizer Inc., 700 Chesterfield Parkway West, mail zone AA3C, Chesterfield, MO 63017, USA.
In this report, we show that apoptosis signal-regulating kinase 1(-/-) (ASK1 KO) mice were resistant to inflammatory arthritis induced in the K/BxN serum transfer model of rheumatoid arthritis (RA). The p38 inhibitor, SD-0006 was administered to wild type (WT) mice as a comparator. Both ASK1 KO and p38 inhibition resulted in marked attenuation of edema, cartilage damage, bone resorption, and general inflammatory responses.
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