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The global fight against human immunodeficiency virus (HIV) is complicated by its extensive genetic diversity, which arises from high mutation rates, rapid replication, and frequent recombination events. These factors lead to the emergence of numerous recombinant forms of HIV-1, contributing to the virus's adaptability and complicating prevention and treatment efforts. In this study, we identified two novel, unique recombinant forms (URFs) of HIV-1, CRF01_AE/CRF79_0107 and CRF01_AE/CRF07_BC, through near full-length genome sequence analysis. These URFs were detected in two individuals within the student men who have sex with men (MSM) population of Shijiazhuang, Hebei Province, China. Both utilized CRF01_AE as the underlying template, and PQ585802 represents a second-generation recombinant form comprising CRF01_AE and CRF79_0107. It is a novel recombinant form that was initially identified. PQ585803 represents a second-generation recombinant form, composed of CRF01_AE and CRF07_BC, and exhibits distinctive characteristics when compared to previously identified recombinant forms. This study underscores the urgent need for targeted public health measures focusing on high-risk populations, such as MSM and students, to curb the spread of HIV-1. Tailored education, enhanced access to prevention services, and strategies addressing risky behaviors are critical in reducing HIV-1 prevalence and mitigating the challenges posed by recombinant forms.
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http://dx.doi.org/10.1089/aid.2024.0127 | DOI Listing |
Protoplasma
September 2025
Vavilov Institute of General Genetics RAS, Moscow, Russia.
Large interstitial telomeric regions are considered remnants and markers of chromosomal rearrangements or a result of several suggested molecular mechanisms of telomere repeats accumulation. More rare are cases when large interstitial repeats are found not close to, but at a distance from the centromere. However, synapsis, recombination, and effects on chromatin near these regions during meiotic prophase I have not been sufficiently studied.
View Article and Find Full Text PDFBiotechnol Lett
September 2025
Department of Chemical Engineering, Hongik University, Sangsu-dong, Mapo-gu, Seoul, 04066, Republic of Korea.
The cell surface display system employs carrier proteins to present target proteins on the outer membrane of cells. This system enables functional proteins to be exposed on the exterior of living cells without cell lysis, allowing direct interaction with the surrounding environment. A major limitation of conventional approaches is the difficulty in displaying large-sized enzymes or antibodies, despite their critical roles in applications requiring functional domains that must remain intact, such as catalytic or antigen-binding sites.
View Article and Find Full Text PDFACS Synth Biol
September 2025
The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China.
Human Bone Morphogenetic Protein-2 (hBMP-2) serves as a critical regulator in bone and cartilage formation; however, its industrial application is hindered by its inherent tendency to form inclusion bodies in prokaryotic expression systems. To address this issue, we established a recombinant hBMP-2 (rhBMP-2) expression system using the pCold II plasmid and the SHuffle T7 strain. We explored several strategies to enhance the solubility of rhBMP-2, including coexpression with molecular chaperones, vesicle-mediated secretory expression, fusion expression with synthetic intrinsically disordered proteins (SynIDPs), and fusion expression with small-molecule peptide tags.
View Article and Find Full Text PDFHIV Med
September 2025
Department of Medical Microbiology, Faculty of Medicine, Hacettepe University, Ankara, Türkiye.
Introduction: Monitoring transmitted drug resistance is crucial for guiding first-line antiretroviral therapy (ART) and controlling the rising HIV epidemic in Türkiye. This study aimed to determine the prevalence of transmitted antiretroviral resistance to protease inhibitors (PIs), nucleoside reverse transcriptase inhibitors (NRTIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs), integrase strand transfer inhibitors (INSTIs) and capsid assembly inhibitors (CAIs). We also assessed the distribution of HIV-1 subtypes and circulating recombinant forms (CRFs) at one of the main national referral centres in Türkiye.
View Article and Find Full Text PDFVet Parasitol
September 2025
Medical Micro- & Molecular Biology, Institute of Chemistry and Biotechnology, Zurich University of Applied Sciences (ZHAW), Wädenswil, Switzerland; Precision Parasitology AG, Switzerland; Institute of Parasitology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland. Electronic address: ra
Fasciola hepatica is a common trematode parasite of livestock in many regions, causing significant economic losses and affecting animal welfare. Horses rarely develop patent liver fluke infection. However, liver damage can affect animal health and welfare.
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