Experimental Pharmacology of Inflammation (6BBM0327)
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Coursework Lab Write Up Essay Experimental Pharmacology of Inflammation (6BBM0327)
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Course
Experimental Pharmacology of Inflammation (6BBM0327)
Institution
Kings College London (KCL)
lab write up titles: Exploring combinatorial specificity: Inhibiting neutrophil chemotaxis with CXCR2 antagonists and Rac-1 inhibitors in vitro.
Received a first class honours grade (72%) for this essay
Includes abstract, aims and objectives, into, methods, results with stats, discussion, conclus...
Experimental Pharmacology of Inflammation (6BBM0327)
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Exploring combinatorial specificity:
Inhibiting neutrophil chemotaxis with
CXCR2 antagonists and Rac-1 inhibitors in
vitro
By Isabella Hampson K21053811
Kings College London
Biomedical Sciences
6BBM0327 Experimental Pharmacology of Inflammation (23~24)
, Abstract
Background and Purpose:
Leveraging the concept of ‘combinatorial specificity’, offers a promising avenue for selective
pharmacological intervention in treatment of inflammatory disorders. As neutrophils are key
players in the pathogenesis many diseases, there is an interest in inhibiting their aberrant
and dysregulated migration into chronically inflamed tissues. Therefore, we evaluated the
efficacy of two drugs, SB225002 (a CXCR2 receptor antagonist) and NSC23766 (a Rac-1
inhibitor), in suppressing neutrophil chemotaxis induced by chemokines IL-8 and fMLP.
Experimental Approach:
An in vitro Transwell assay was employed. Neutrophils were isolated from human peripheral
blood, pre-treated with SB225002 or NSC23766 and then subjected to chemotactic stimuli.
Subsequently, the extent of neutrophil migration under different conditions was quantified.
Key Results:
SB225002 and NSC23766 exhibited differential effects on neutrophil chemotaxis. SB225002
significantly suppressed neutrophil migration induced by IL-8, but not fMLP. Whereas,
NSC23766 inhibited both IL-8 and fMLP-induced neutrophil migration, albeit less effectively
than SB225002.
Conclusions and Implications:
While both drugs were effective in suppressing neutrophil chemotaxis, we suggest that
SB225002 is superior to NSC23766 at exploiting ‘combinatorial specificity’ as CXCR2 is
preferentially expressed on neutrophils, whereas Rac-1 is constitutively expressed in
eukaryotic cells. We propose further research and optimisation of the SB225002 compound
to explore its potential as a selective anti-inflammatory therapy for clinical use.
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