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91.
Fibroblast quiescence and the disruption of ERK signaling in mechanically unloaded collagen matrices 总被引:6,自引:0,他引:6
Fibroblasts in mechanically unloaded collagen matrices had low levels of DNA synthesis compared with cells in mechanically loaded matrices. Under the former conditions, the cellular ERK signaling pathway appeared to be disrupted. Also, pharmacologic inhibition of ERK signaling blocked DNA synthesis by fibroblasts in mechanically loaded matrices. These results were consistent with the idea that mechanoregulation of fibroblast DNA synthesis in collagen matrices occurs at the level of the ERK signaling pathway. 相似文献
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Boot EP Koning GA Storm G Wagenaar-Hilbers JP van Eden W Everse LA Wauben MH 《Arthritis research & therapy》2005,7(3):R604-R615
T cells have an important role during the development of autoimmune diseases. In adjuvant arthritis, a model for rheumatoid
arthritis, we found that the percentage of CD4+ T cells expressing the activation marker CD134 (OX40 antigen) was elevated before disease onset. Moreover, these CD134+ T cells showed a specific proliferative response to the disease-associated epitope of mycobacterial heat shock protein 60,
indicating that this subset contains auto-aggressive T cells. We studied the usefulness of CD134 as a molecular target for
immune intervention in arthritis by using liposomes coated with a CD134-directed monoclonal antibody as a drug targeting system.
Injection of anti-CD134 liposomes subcutaneously in the hind paws of pre-arthritic rats resulted in targeting of the majority
of CD4+CD134+ T cells in the popliteal lymph nodes. Furthermore, we showed that anti-CD134 liposomes bound to activated T cells were not
internalized. However, drug delivery by these liposomes could be established by loading anti-CD134 liposomes with the dipalmitate-derivatized
cytostatic agent 5'-fluorodeoxyuridine. These liposomes specifically inhibited the proliferation of activated CD134+ T cells in vitro, and treatment with anti-CD134 liposomes containing 5'-fluorodeoxyuridine resulted in the amelioration of adjuvant arthritis.
Thus, CD134 can be used as a marker for auto-aggressive CD4+ T cells early in arthritis, and specific liposomal targeting of drugs to these cells via CD134 can be employed to downregulate
disease development. 相似文献
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Johannes HM Levels Boris Bleijlevens Farhad Rezaee Johannes MFG Aerts Joost CM Meijers 《Proteome science》2007,5(1):15-8
Background
High-Density Lipoprotein (HDL), one of the main plasma lipoproteins, serves as a docking station for proteins involved in inflammation, coagulation, and lipid metabolism. 相似文献97.
Plant Molecular Biology - 相似文献
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