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2015 ; 16
(ä): 132
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Pharmacologically-induced mitotic synchrony in airway epithelial cells as a
mechanism of action of anti-inflammatory drugs
#MMPMID26511361
Freishtat RJ
; Nino G
; Tsegaye Y
; Alcala SE
; Benton AS
; Watson AM
; Reeves EK
; Haider SK
; Damsker JM
Respir Res
2015[Oct]; 16
(ä): 132
PMID26511361
show ga
BACKGROUND: Mitotic synchrony is the synchronous progression of a population of
cells through the cell cycle and is characteristic of non-diseased airway
epithelial cells. However, we previously showed that asthmatic airway epithelial
cells are characterized by mitotic asynchrony and are pro-inflammatory as a
result. Glucocorticoids can induce mitotic synchrony that in turn suppresses the
pro-inflammatory state of diseased cells, suggesting a novel anti-inflammatory
mechanism of action. Herein, we benchmarked traditional glucocorticoids against
the ability of a new clinical-stage dissociative steroidal drug, VBP15, for
mitotic resynchronization and associated anti-inflammatory activity in asthmatic
airway epithelial cells. METHODS: Primary airway epithelial cells differentiated
at air-liquid interface were exposed to VBP15, dexamethasone or vehicle following
in vitro mechanical injury. Basolateral cytokine secretions (TGF-?1, IL-6, IL-10,
IL-13, and IL-1?) were analyzed at different time points using cytometric bead
assays and mitosis was examined by flow cytometry. RESULTS: VBP15 improved
mitotic synchrony of proliferating asthmatic cells in air-liquid interface
cultures compared to vehicle-exposed cultures. VBP15 also significantly reduced
the basolateral secretion of pro-inflammatory (i.e. IL-1?) and pro-fibrogenic
cytokines (i.e. TGF-?1) in air-liquid interface-differentiated asthmatic
epithelial cultures following mechanical injury. CONCLUSION: VBP15 improves
mitotic asynchrony and injury-induced pro-inflammatory and fibrogenic responses
in asthmatic airway epithelial cultures with efficacy comparable to traditional
glucocorticoids. As it is predicted to show superior side effect profiles
compared to traditional glucocorticoids, VBP15 holds potential for treatment of
asthma and other respiratory conditions.
|Anti-Inflammatory Agents/*pharmacology
[MESH]
|Asthma/*drug therapy/metabolism/pathology
[MESH]
|Case-Control Studies
[MESH]
|Cells, Cultured
[MESH]
|Cytokines/metabolism
[MESH]
|Dexamethasone/*pharmacology
[MESH]
|Epithelial Cells/*drug effects/pathology
[MESH]
|Glucocorticoids/*pharmacology
[MESH]
|Humans
[MESH]
|Inflammation Mediators/metabolism
[MESH]
|Lung/*drug effects/metabolism/pathology
[MESH]
|Mitosis/*drug effects
[MESH]
|Pregnadienediols/*pharmacology
[MESH]
|Pulmonary Fibrosis/metabolism/pathology/prevention & control
[MESH]