Objective: To establish the single genome amplification (SGA) method and analyze the quasispecies in HIV-infected patients.
Methods: All 6 sample RNA acquired in 2010 in Shenzhen and genetic sequenced as overlap peaks were extracted and diluted to a single copy, nest-PCR after one step RT-PCR was employed to amplify HIV-1 genome, and then PCR products was purified and sequenced. Mega 4.02 software was used to analyze the genetic distance among HIV-1 quasispecies, and phylogenetic tree was constructed.
Results: Our data showed that viral sequences derived from different patients were grouped into different clusters. Subcluster was also observed in several clusters, indicating these existed competition and preferential replication of certain viral strains. The genetic distance within one cluster of 6 samples were between 0.008 and 0.06, it was likely to associate with the duration since infection and viral load.
Conclusion: SGA is a useful approach to gain information on quasispecies, the genetic distance within one cluster may help to determine the infection time and immune escaping. The analysis of related affecting factors need more samples.
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Plant Mol Biol
January 2025
School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan, 411201, China.
Deficiency or excess of mineral elements in the environment is a primary factor limiting crop yields and nutritional quality. Lotus (Nelumbo nucifera) is an important aquatic crop in Asia, but the mechanism for accumulating mineral nutrients and coping with nutrient deficiency/excess is still largely unknown. Here, we identified NnMTP10, a member of the cation diffusion facilitator family, by screening the cDNA library of lotus.
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November 2024
School of Electrical and Information Engineering, Zhengzhou University, No. 100, Science Avenue, Hightech District, Zhengzhou City 450001, Henan Province, China.
Structural network control principles provided novel and efficient clues for the optimization of personalized drug targets (PDTs) related to state transitions of individual patients. However, most existing methods focus on one subnetwork or module as drug targets through the identification of the minimal set of driver nodes and ignore the state transition capabilities of other modules with different configurations of drug targets [i.e.
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Faculty of Biology Medicine and Health, The University of Manchester, Manchester M13 9PT, UK.
In the developing mouse ventral spinal cord, HES5, a transcription factor downstream of Notch signalling, is expressed as evenly spaced clusters of high HES5-expressing neural progenitor cells along the dorsoventral axis. While Notch signalling requires direct membrane contact for its activation, we have previously shown mathematically that contact needs to extend beyond neighbouring cells for the HES5 pattern to emerge. However, the presence of cellular structures that could enable such long-distance signalling was unclear.
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Department of Genetics and Evolutionary Biology. Institute of Biosciences, University of São Paulo, Rua Do Matão, 277, São Paulo, SP, 05508-090, Brazil.
Background: In this study, we investigated the genetic variability and population structure of the New World screwworm fly Cochliomyia hominivorax. We tested the hypothesis that the species exhibits a center-periphery distribution of genetic variability, with higher genetic diversity in central populations (e.g.
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January 2025
Faculty of Medicine, Department of Medical Education and Informatics, Karamanoğlu Mehmetbey University, Karaman, 70200, Türkiye.
With the importance of time and cost in today's world, it is essential to solve problems in the best way possible. Optimization is a process used to achieve this goal and is applied in several areas, one of which is route planning. Route optimization minimizes the use of resources such as fuel, distance, and time.
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