Avian Influenza Virus H5N1

Background

Creative Biolabs provides a wide range of high-quality aptamers targeting avian influenza virus H5N1 to help researchers improve their experiments and research about avian influenza. We are committed to maintaining high standards, which leads to dependable outcomes that enhance the effectiveness and quality of your research.

Introduction

H5N1 is a form of avian flu. Influenza virus particles have a protective outer membrane containing two types of surface glycoproteins: hemagglutinin (H) and neuraminidase (N). The H type has 16 subtypes, while the N type has 9 subtypes. Highly pathogenic avian influenza results in severe illness in birds and leads to high mortality rates. Low pathogenic avian influenza refers to viruses that trigger outbreaks in poultry but typically do not result in severe disease. While all human flu viruses can infect birds, not every bird flu virus can infect humans. It has been verified that 8 kinds of avian flu viruses can be transmitted to humans, including H5N1, H5N2, H7N2, H7N3, H7N7, H9N2, H10N7, and the most recent one, H7N9.

The H5N1 virus, a highly pathogenic avian influenza virus, can infect humans, but it is not easily transmitted between humans. Direct contact with infected animals or contaminated environments is the primary way humans become infected, but it does not effectively lead to the transmission of these viruses between humans. The data on human infection with influenza virus A(H5N1) shows that the incubation period is 2 to 5 days on average and can be as long as 17 days. Many patients infected with influenza virus A(H5) or A(H7N9) develop the disease very quickly. The first signs often include a high fever and cough.

Composition of the Virus

Avian influenza viruses are generally spherical with a diameter of 80 to 120 nanometers, but they often have filamentous forms of the same diameter of varying lengths. The surface of the virus is covered with dense spikes or fibrils of 10 to 12 nanometers, and the viral envelope contains a spiral nucleocapsid. The two different shapes of surface spikes are HA (rod-shaped trimer) and NA (mushroom-shaped tetramer).

Fig.1 The structure of avian influenza virus. Distributed under CC BY 4.0, from Wiki, without modification.

The avian influenza virus particles are composed of approximately 0.8% to 1.1% RNA, 70% to 75% protein, 20% to 24% lipids and 5% to 8% carbohydrates. The lipids are located in the virus membrane, mostly phospholipids, with a small amount of cholesterol and glycolipids. Several carbohydrates, including ribose (in RNA), galactose, mannose, fucose, and glucosamine, are mainly present in the form of glycoproteins or glycolipids in the virus particles.

Creative Biolabs provides various kinds of avian influenza virus H5N1 products to fulfill your diverse experimental requirements.

Avian Influenza Virus H5N1 Aptamer Analysis

Anti-Avian Influenza Virus H5N1 aptamers are short, single-stranded DNA or RNA molecules that specifically bind to the H5N1 virus, blocking its ability to infect host cells. These aptamers offer promising applications in diagnostics, antiviral therapy, and as potential tools for therapeutic development to combat avian influenza.

Fig.2 The protein targets for aptamers in influenza virus.¹

Research on anti-H5N1 aptamers has highlighted their potential for use in diagnostic and therapeutic fields. Studies have demonstrated their use in rapid detection assays, enabling early identification of H5N1 infections. Furthermore, researchers have explored aptamers as antiviral agents, showing that they can inhibit viral entry into host cells by binding to key viral epitopes, thus reducing infection. For example, one RNA aptamer can bind with high affinity to hemagglutinin (HA) derived from highly pathogenic avian influenza (HPAI) H5N1 and effectively interfere with HA-glycan binding, revealing its application not only in surveillance and diagnosis but also in the development of H5N1-specific virucidal products. Anti-H5N1 aptamers also hold promise in preventing H5N1 transmission in poultry, providing a novel approach to controlling avian influenza outbreaks.

Creative Biolabs' anti-H5N1 aptamers offer high specificity and binding affinity for the virus, ensuring reliable diagnostic and antiviral research efficacy. We provide custom aptamer development, diagnostic kits, and comprehensive services tailored to meet our customers’ needs in research, antiviral drug development, and infectious disease management.

Reference

1. González, Víctor M., et al. "Use of aptamers as diagnostics tools and antiviral agents for human viruses." Pharmaceuticals 9.4 (2016): 78. Distributed under Open Access license CC BY 4.0, without modification.