Anti-CRISPR Protein AcrIIC5 Inhibits CRISPR-Cas9 by Occupying the Target DNA Binding Pocket.

Anti-CRISPR proteins inhibit CRISPR-Cas immune systems through diverse mechanisms. Previously, the anti-CRISPR protein AcrIIC5 was shown to potently inhibit a type II-C Cas9 from Neisseria meningitidis (Nme1Cas9). In this work, we explore the mechanism of activity of the AcrIIC5 homologue from Neisseria chenwenguii (AcrIIC5) and show that it prevents Cas9 binding to target DNA.

Safety and Efficacy of Mavrilimumab For Rheumatoid Arthritis: A Systematic Review and Meta-Analysis.

Background: Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease characterized by progressive swelling and stiffness in the joints. Mavrilimumab is a human monoclonal antibody that may block the autoimmune mechanism of the antibodies causing RA.

Objective: We aim to assess the safety and efficacy of Mavrilimumab in treating rheumatoid arthritis.