A Remarkable Discovery: Exploring a Rare Eresus and Spider Wasp Interaction

Posted by
  Photo Credit: © Antonino Rametta . All photographs are used with permission. No part of these images may be reproduced, distributed, or used in any form without the prior written permission of the photographer. A Remarkable Discovery: Exploring a Rare Eresus and Spider Wasp Interaction One of the most rewarding aspects of maintaining Arácnido Taxonomy is hearing from naturalists and photographers around the world who take the time to share their discoveries. Every so often, an email arrives that immediately captures your attention. Not because it claims to rewrite what we know about biodiversity, but because it documents something that very few people have the opportunity to witness. Recently, I was contacted by a naturalist in Sicily who shared a series of exceptionally high-quality photographs of a female ladybird spider ( Eresus ) during what appeared to be an interaction with a spider wasp. Along with the images came a simple question: "Could this be scientifically import...

Enhanced immunogenicity of COVID-19 RBD fused to mutant scorpion's phospholipase D for vaccine development

Posted by

 

By Monod L, Duperre N, Harms D (2019) An annotated catalogue of the scorpion types (Arachnida, Scorpiones) held in the Zoological Museum Hamburg. Part I: Parvorder Iurida Soleglad & Fet, 2003. Evolutionary Systematics 3(2): 109-200. https://doi.org/10.3897/evolsyst.3.37464 - https://evolsyst.pensoft.net/article/37464/list/2/ (license), CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=86190190


Enhanced immunogenicity of COVID-19 RBD fused to mutant scorpion's phospholipase D for vaccine development

Abstract

The management of the global COVID-19 pandemic relies, in part, on the rapid development of preventive vaccines at an unparalleled speed. The infection caused by the coronavirus is facilitated by the spike glycoprotein trimmer located on the surface of the virion, specifically through its receptor binding domain (RBD). The response of antibodies to this domain is a key indicator of the immunization's effectiveness and is well correlated with the neutralization of the viral agent. The failure of COVID-19 vaccines to induce complete neutralization provides an opportunity to find an alternative way. In this study, we show that recombinant RBD, Wuhan-specific; fused to mPLD1 protein, a highly effective immunogen from Hemiscorpius lepturus scorpion's venom, induce a potent immune response in mouse model. Conventional virus neutralization test (cVNT) with serum of mice immunized with mPLD1-RBD fusion protein, protects the Vero cells against the Omicron and Wuhan variants at the minimum of 1/64 and 1/32 dilution, respectively. The data strongly suggests that the subunit recombinant fusion protein could be a promising candidate for vaccine development against COVID-19. Our research showed that fusion of mPLD1, a highly effective immunogen, with RBD significantly boosts the immune response and substantially amplifies RBD antigenic properties in lab animals, setting the stage for their assessment in a comprehensive preclinical study.

New Microbes and New Infections, 2025-10-01, Volume 67, Article 101634 

https://www.clinicalkey.com/#!/content/journal/1-s2.0-S2052297525000733