Related Experiment Videos
GS-9620 alleviates psoriasis-like inflammation by regulating autophagy in keratinocytes
Yansi Lyu1, Wei Zhou2, Pei Zhang3
1Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong, P. R. China.
Background:
Psoriasis is an immune-driven dermatosis marked by keratinocyte hyperproliferation. GS-9620, a TLR7 agonist, previously mitigated EV71-triggered inflammation in mice; here we probe its anti-psoriatic potential and mechanisms.
Methods:
IMQ-induced psoriasis-like mice were treated with GS-9620 or MTX; severity was tracked by PASI and histology. Skin/spleen cytokines (IL-1β, IL-6, IL-18, HMGB1, TNF-α) were quantified via ELISA; immune subsets were quantified by flow cytometry. Autophagy proteins (ATG5/12/16 L1) and NLRP3 were assessed by IHC/Western blot. In vitro, M5-stimulated primary keratinocytes were treated with GS-9620 ± autophagy modulators, followed by cytokine and protein analyses.
Results:
GS-9620 markedly reduced erythema, scaling and epidermal thickness, lowered skin and systemic cytokines, and decreased splenic CD3+/CD4+IL-17A+ cells. It restored ATG5/12/16 L1 expression while suppressing NLRP3 both in lesions and in M5-stimulated keratinocytes, leading to diminished IL-1β, IL-6, IL-18, HMGB1 and TNF-α release.
Conclusions:
GS-9620 alleviates psoriasis by enhancing autophagy and dampening NLRP3-mediated inflammation, offering a promising therapeutic avenue.
Related Concept Videos
Clinical Applications of Epidermal Stem Cells
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
iPS Cell Differentiation
Renewal of Skin Epidermal Stem Cells
The JAK-STAT Signaling Pathway
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...