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Suppression of Monkeypox Virus by Downregulation of Fatty Acid Synthase and Upregulation of Cholesterol-25 Hydroxylase.

The World Health Organization declared the spread of monkeypox virus (MPXV) across multiple African countries a public health emergency of international concern in August 2024. This marks the second such declaration in the past 2 years in response to the MPXV transmission. The re-emergence of the MPXV 3 years after the start of the SARS-CoV-2 epidemic further emphasizes the need to develop broad spectrum antivirals that might control the spread of poorly understood pathogens. The induction of innate immune responses to a viral infection triggers rapid expression of type-I-interferon, which sub…

Evolutionary epidemiology of the monkeypox virus in Shandong Province during the post-global outbreak era.

INTRODUCTION: Monkeypox virus (MPXV) is an emerging zoonotic pathogen with increasing human-to-human transmission. Since the first case in Shandong Province in June 2023, 61 cases were reported by the end of 2024, predominantly among young men who have sex with men. Genomic and phenotypic characterization of circulating strains is crucial for assessing transmission dynamics and public health risks. METHODS: Genomic sequencing was performed on the clinical samples to determine viral lineages and identify single nucleotide polymorphisms (SNPs). In vitro experiments were conducted to assess phen…

Functional characterization and structural prediction of hypothetical proteins in monkeypox virus and identification of potential inhibitors.

The excessive activation of the monkeypox virus (MPXV-Congo_8-156) is linked to various skin and respiratory disorders such as rashes, fluid-filled blisters, swollen lymph nodes and encephalitis (inflammation of the brain), highlighting MPXV-Congo_8-156 as a promising target for drug intervention. Despite the effectiveness of Cidofovir, in inhibiting MPXV activity, its limited ability to penetrate the skin and its strong side effects restrict its application. To address this challenge, we screened 500 compounds capable of penetrating the skin and gastrointestinal tract to identify potent MPXV …

Development of an Accessible and Scalable Quantitative Polymerase Chain Reaction Assay for Monkeypox Virus Detection.

During the 2022 monkeypox (MPX) outbreak, testing has been limited and results delayed, allowing ongoing transmission. Gold-standard quantitative polymerase chain reaction (qPCR) diagnostics are difficult to obtain. This research adapted the June 2022 CDC MPX qPCR assay for broad implementation. Validated using MPX stocks in a matrix with multiple sample types, MPX was detected with cycle threshold (Ct) values 17.46-35.59 and titer equivalents 8.01 × 106 to 2.45 × 100 plaque-forming unit (PFU)/mL. The detection limit was 3.59 PFU/mL. Sensitivity and specificity were both 100%. This qPCR assay

A visual assay panel for the identification of monkeypox virus DNA belonging to the clades I and II.

• A MPXV visual assay panel is a rapid and reliable tool to differentiate the clades I and II within 25 min. • This panel combines RAA and immunochromatography, and detects as low as 1 copy/μL recombinant plasmid. • Visual assay panel shows no cross-reactivity with orthopoxviruses and herpesvirus that infect humans, such as vaccinia virus.

Modelling the impact of vaccination and environmental transmission on the dynamics of monkeypox virus under Caputo operator.

In this study, we examine the impact of vaccination and environmental transmission on the dynamics of the monkeypox. We formulate and analyze a mathematical model for the dynamics of monkeypox virus transmission under Caputo fractional order. We obtain the basic reproduction number, the conditions for the local and global asymptotic stability for the disease-free equilibrium of the model. Under the Caputo fractional order, existence and uniqueness solutions have been determined using fixed point theorem. Numerical trajectories are obtained. Furthermore, we explored some of the sensitive parame…

In-silico investigation of E8 surface protein of the monkeypox virus to identify potential therapeutic agents.

The re-emergence of the monkeypox virus (MPXV) in 2022 has become a global issue. The virus was first found in Denmark in 1958. The first human MPXV disease was reported in 1980 in Congo, caused by a rare zoonotic virus belonging to the genus Orthopoxvirus and the family Poxviridae. Like SARS-CoV, there are no specific drugs to treat this infection. Taking cues from the successful implementation of drug repositioning for the Covid-19 pandemic using in silico drug discovery. We employed structure-based drug design in the study to repurpose the existing drug and natural product derivatives libra…

Phylogeny and molecular evolution of the first local monkeypox virus cluster in Guangdong Province, China.

The first local mpox outbreak in Guangdong Province, China occurred in June 2023. However, epidemiological data have failed to quickly identify the source and transmission of the outbreak. Here, phylogeny and molecular evolution of 10 monkeypox virus (MPXV) genome sequences from the Guangdong outbreak were characterized, revealing local silent transmissions that may have occurred in Guangdong whose mpox outbreaks suggested a molecular epidemiological correlation with Portugal and several regions of China during the same period. The lineage IIb C.1, which includes all 10 MPXV from Guangdong, sh…

Recent Advances in Research and Management of Human Monkeypox Virus: An Emerging Global Health Threat.

In 2003, the United States saw an epidemic of monkeypox that was later traced back to rodents of West Africa infected with the monkeypox virus (MPXV). Disease in the United States seemed less severe than the smallpox-like disease in the Democratic Republic of the Congo (DRC). In this study, researchers analyzed data from Central Africa: two distinct MPXV clades were confirmed by sequencing the genomes of MPXV isolates from Western Africa, the United States, and Central Africa. By comparing open reading frames across MPXV clades, scientists can infer which virus proteins might account for the o…

Serosurvey of Immunity to Monkeypox (Mpox) Virus Antigens in People Living with HIV in South Florida.

Mpox is an infectious disease caused by the monkeypox virus (MPXV) belonging to the Orthopoxvirus (OPXV) genus, which includes smallpox and vaccinia virus (VACV). A global mpox outbreak which began in May 2022 has infected more than 88,000 people. VACV-based vaccines provide protection against mpox disease but complicate the use of serological assays for disease surveillance. We tested the reactivity of serum IgG from Modified Vaccinia Ankara-Bavarian Nordic (MVA-BN)-vaccinated (n = 12) and convalescent mpox-infected (n = 5) individuals and uninfected, non-vaccinated controls (n = 32) to MPXV/…

In silico design and immunoinformatics analysis of a universal multi-epitope vaccine against monkeypox virus.

Monkeypox virus (MPXV) outbreaks have been reported in various countries worldwide; however, there is no specific vaccine against MPXV. In this study, therefore, we employed computational approaches to design a multi-epitope vaccine against MPXV. Initially, cytotoxic T lymphocyte (CTL), helper T lymphocyte (HTL), linear B lymphocytes (LBL) epitopes were predicted from the cell surface-binding protein and envelope protein A28 homolog, both of which play essential roles in MPXV pathogenesis. All of the predicted epitopes were evaluated using key parameters. A total of 7 CTL, 4 HTL, and 5 LBL epi…

Development of a Loop-Mediated Isothermal Amplification Method for Rapid and Visual Detection of Monkeypox Virus.

Monkeypox virus (MPXV) is a human pathogenic virus that belongs to the genus Orthopoxvirus. In 2022, MPXV caused an unprecedented number of infections in many countries. As it is difficult to distinguish MPXV from other pathogens by its symptoms in the early stage of infection, a rapid and reliable assay for MPXV detection is needed. In this study, we developed a loop-mediated isothermal amplification (LAMP) assay for the specific detection of MPXV and evaluated its application in simulated clinical samples. The A27L-1 and F3L-1 primer sets were identified as the optimal primers, and 63°C was …

Viral loads in clinical samples of men with monkeypox virus infection: a French case series.

BACKGROUND: Monkeypox virus (MPXV) is currently spreading among men who have sex with men, outside of sub-Saharan Africa, and close contact during sex seems to be one of the key pathways of viral transmission in the current outbreak. Our aim was to describe the distribution of MPXV in the human body, as it might play a role in its dissemination through sexual contact. METHODS: The study population in this case series consisted of patients with confirmed MPXV infection attending the Pitié-Salpêtrière Hospital (Paris, France), who had been sampled from multiple anatomical sites, including skin,…

Development of rapid nucleic acid assays based on the recombinant polymerase amplification for monkeypox virus.

• Two RPA methods (F-RPA and VF- RPA) have been developed for monkeypox virus rapid detection. • The limit of detection was 15.32 copies/μL for F-RPA and 8.53 copies/μL for VF-RPA. • No cross-reaction was found in 14 rash and fever-associated viruses. • The two RPA methods are simple and rapid, making them potentially useful for detection of MPXV in the field/clinic.

Identification of probable inhibitors for the DNA polymerase of the Monkeypox virus through the virtual screening approach.

Given the paucity of antiviral treatments for monkeypox disease, caused by the Monkeypox virus (MPXV), there is a pressing need for the development/identification of new drugs to treat the infection. MPXV possesses a linear dsDNA genome that is replicated by a DNA replication complex of which DNA polymerase (DPol) forms an important component. Owing to the importance of DPol in the viral life cycle, identifying/designing small molecules abolishing its function could yield new antivirals. In this study, we first used the AlphaFold artificial intelligence program to model the 3D structure of the…

Phylogenomic analysis of the monkeypox virus (MPXV) 2022 outbreak: Emergence of a novel viral lineage?

Monkeypox is a zoonotic disease with clinical manifestations similar to smallpox in humans. Since May 13, 2022, an increasing number of susp … of pathogens of public health relevance. Herein, we performed a phylogenomic analysis of available Monkeypox virus (MPXV) genomes to determine their evolution and diversity. Our analysis revealed that all MPXV genomes grouped into three monophyletic clades: two previously characterized clades and a newly emerging clade harboring genomes from the ongoing 2022 mul …

« Обезьяна », литературный обзор: что новое и откуда происходит вирус?

Среди семейства Поксвириды ортопоксивирус является самым известным родом. Известно, что несколько вирусов ДНК, входящих в эту группу, вызывают болезнь человека от опасного для жизни вируса вариолы (VARV) (причинный агент оспы), вируса обезьянопокс (MPXV), вируса коровопокс (CPXV) и вируса вакцины (VACV). Эти ортопоксивирусы по-прежнему являются проблемой здравоохранения, поскольку VACV или CPXV по-прежнему вызывают появление эндемических факторов, особенно в развивающихся странах. В мае 2022 года из более чем 30 стран мира поступили сообщения о сотнях случаев, связанных с MPXV. В конце июля Вс

Совпадение в аннотации оригинала
Among the Poxviridae family, orthopoxvirus is the most notorious genus. Several DNA viruses belonging to this group are known to produce human disease from the life-threatening variola virus (VARV) (the causative agent of smallpox), monkeypox virus (MPXV), cowpox virus (CPXV), and vaccinia virus (VACV). These orthopoxviruses still remain a public health conc…

Nasal monkeypox virus infection successfully treated with cidofovir in a patient newly diagnosed with HIV.

Monkeypox (MPXV) usually causes a mild and self-limited infection. To date there are no data about cidofovir for the treatment for MPXV in humans. We report a case of a 25 years-old Brazilian man with a concurrent diagnosis of acute HIV (human immunodeficiency virus) infection, primary syphilis and MPXV infection with a nasal lesion successfully treated with intravenous cidofovir.