Several research in the organisms of marine invertebrates to assess the medicinal ability of its bio-active molecules have yielded very positive results in recent times. Jellyfish secreted venoms are rich sources of toxins intended to catch prey or deter predators among invertebrate species, but they may also have harmful effects on humans. The nematocyst, a complex intracellular system that injects a venomous mixture into prey or predators that come into contact with the tentacles or other parts of the body of cnidarians, determines the venomous existence of cnidarians. Nematocyst venoms are mixtures of peptides, proteins and other components that in laboratory animals can induce cytotoxicity, blockade of ion channels, membrane pore formation, in vivo cardiovascular failure and lethal effects. There are also valuable pharmacological and biological aspects of jellyfish venoms. In the present review, overviews of the variety of possible toxin families in cnidarian venoms are addressed in this analysis and these potential toxins are surveyed with those from other cnidarians that offer insight into their potential functions such as anti-oxidant, anti-cancer activity and much more. This research review will provide awareness of the growing repertoire of jellyfish venom proteins and will help to further isolate and classify particular proteins to understand its structure and functional relationship.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.ijbiomac.2021.02.074 | DOI Listing |
Int Marit Health
January 2025
Department of Epidemiology and Tropical Medicine; Military Institute of Medicine - National Research Institute, Warsaw, Poland.
Toxicol Lett
January 2025
School of Life Sciences, Liaoning Normal University, Dalian 116081, China. Electronic address:
Jellyfish stings can trigger abrupt heart failure via toxins, leading acute mortality rise. Proposed mechanisms involve oxidative stress and apoptosis, but evidence for effective treatments is lacking. To explore the concrete molecular mechanisms of jellyfish toxin-induced cardiotoxicity and to explore effective therapeutic approaches, we established tentacle extract (TE) of jellyfish Nemopilema nomurai induced cardiotoxicity models in vivo and in vitro based Intelligent Character Recognition (ICR) mice and H9C2 cells, respectively,.
View Article and Find Full Text PDFBiochem Biophys Res Commun
January 2025
Center of Protein Studies, Faculty of Biology, Havana University, Havana, Cuba.
Sticholysin I and II (St I/II) belong to the actinoporins family; these proteins form pores in host cell membranes by binding their N-terminal segment to the membrane, leading to protein-lipid (toroidal) pores. Peptides derived from actinoporins pore-forming domains replicate their folding properties and permeabilizing effects. Despite the advances in understanding how these proteins and peptides mediate pore formation, the role of different N-terminal segments in inducing membrane curvature is still unclear.
View Article and Find Full Text PDFToxins (Basel)
November 2024
Center of Biotechnology of Azores (CBA), University of the Azores, 9500-321 Ponta Delgada, Portugal.
, commonly known as the Portuguese Man o' War, is one of the most venomous members of the Cnidaria yet is poorly understood. This article investigates the toxicity of venom by assessing its behavioral and toxicological effects on . The venom administered orally revealed dose- and time-dependent mortality, with an LD50 of 67.
View Article and Find Full Text PDFAdv Mar Biol
November 2024
Department of Ecology and Coastal Management, Instituto de Ciencias Marinas de Andalucía (ICMAN), Consejo Superior de Investigaciones Científicas (CSIC), Puerto Real Cádiz, Spain.
While jellyfish are often considered to be a nuisance, their value to ecosystems and for human exploitation is shifting this perception. People have been eating jellyfish for millennia. In recent decades, the scale of jellyfish fisheries has expanded dramatically, with annual catches in the hundreds of thousands of tonnes.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!