Publications by authors named "Qiwen Hu"

Paddy rice, one of the world's primary cereals, plays a critical role in food security and environmental sustainability. Existing global rice distribution datasets provide valuable insights but are often constrained by time and coverage. In this study, we developed the GloRice (I), a long-term global gridded dataset mapping rice harvested and physical areas at a 5-arcminute resolution for 1961-2021.

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Rice cultivation is one of the major anthropogenic methane sources in China and globally. However, accurately quantifying regional rice methane emissions is often challenging due to highly heterogeneous emission fluxes and limited measurement data. This study attempts to address this issue by quantifying regional methane emissions from rice cultivation with a high-resolution inversion of satellite methane observations from the Tropospheric Monitoring Instrument (TROPOMI).

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Article Synopsis
  • Rice cultivation is a major source of methane emissions, highlighting its importance for climate change mitigation efforts.
  • Researchers validated a methane model (CH4MOD) for rice paddies, which showed a strong correlation with global CH flux data, indicating that it can accurately predict methane emissions based on various management practices.
  • The study found that water management is the biggest influence on methane emissions from rice fields, with emissions varying greatly depending on farming practices, showcasing the need for better models and data for effective emission assessments.
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  • * Endolysin LysSYL, derived from phage SYL, has potential as an antibacterial agent, but its effectiveness is limited by instability and low availability in acidic environments; however, a self-assembling peptide, L5, can form hydrogels that enhance the bioavailability of LysSYL.
  • * The combination of L5 and LysSYL into hydrogels (L5@LysSYL) not only effectively eliminates MRSA by disrupting bacterial membranes but also promotes wound healing in mice
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Focal and systemic infections are serious threats to human health. Preclinical models enable the development of new drugs and therapeutic regimens. In vivo, animal bioluminescence (BL) imaging has been used with bacterial reporter strains to evaluate antimicrobial treatment effects.

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TD serves as an exceptional chassis for next generation industrial biotechnology to produce various products. However, the simultaneous editing of multiple loci in TD remains a significant challenge. Herein, we report the development of a multiple loci genome editing system, named CRISPR-deaminase-assisted base editor (CRISPR-BE) in TD.

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Article Synopsis
  • * The phage-derived endolysin, LysSYL, was found to effectively kill MRSA and other strains, rapidly lysing bacteria and demonstrating strong activity against both single and mixed bacterial biofilms.
  • * LysSYL also performed well in animal models, reducing bacterial loads significantly and protecting mice from lethal S. aureus infections, indicating its potential as a therapeutic agent in treating serious staphylococcal infections.
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Given the high concentration of iron in the micro-environment of ovarian endometriosis, it is plausible to hypothesize that ectopic endometrial cells may be more susceptible to undergoing ferroptosis. Manipulation of ferroptosis has been explored as a potential therapeutic strategy to treat related diseases. In this study, we examined the impact on ectopic endometrial stromal cells (EESCs) of iron overload and an inducer of ferroptosis.

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Objectives: The aim was to explore the magnetic resonance imaging (MRI) features of stage-I intravenous leiomyomatosis (IVL).

Materials And Methods: From January 2019 to January 2023, clinical, pathological, and MRI data were collected from 19 cases confirmed by surgical pathology. Two radiologists retrospectively measured the tumor sizes, T1WIs, T2WIs, and ADC values and evaluated contrast-enhanced T1WIs, DWIs, complications and parauterine infiltrations.

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Previous research has indicated that Polyphyllin I (PPI) possesses potent anticancer properties. However, its impact on endometriosis remains unexplored. This study aims to investigate the inhibitory effects of PPI on ectopic endometrial stromal cells (EESCs).

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Understanding kidney disease relies on defining the complexity of cell types and states, their associated molecular profiles and interactions within tissue neighbourhoods. Here we applied multiple single-cell and single-nucleus assays (>400,000 nuclei or cells) and spatial imaging technologies to a broad spectrum of healthy reference kidneys (45 donors) and diseased kidneys (48 patients). This has provided a high-resolution cellular atlas of 51 main cell types, which include rare and previously undescribed cell populations.

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Staphylococcus aureus remains a dangerous pathogen and poses a great threat to public health worldwide. The prevalence of the S. aureus clonotype is temporally and geographically variable.

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Schizophrenia is one of the most widespread and complex mental disorders. To characterize the impact of schizophrenia, we performed single-nucleus RNA sequencing (snRNA-seq) of >220,000 neurons from the dorsolateral prefrontal cortex of patients with schizophrenia and matched controls. In addition, >115,000 neurons were analyzed topographically by immunohistochemistry.

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Article Synopsis
  • The accessory gene regulator (Agr) quorum-sensing system is a key factor in the pathogenicity of certain strains, with four distinct groups categorized by variations in related genes (AgrB, AgrD, AgrC).
  • Changing the Agr system between strains resulted in notable differences in hemolytic activity, protein levels, and virulence gene expression, implying that the Agr system influences strain behavior.
  • Surprisingly, congenic strains with different Agr alleles displayed similar characteristics, suggesting that additional factors beyond just gene variations affect the behavior of these strains.
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Earth system models (ESMs) have been widely used to simulate global terrestrial carbon fluxes, including gross primary production (GPP) and net primary production (NPP). Assessment of such GPP and NPP products can be valuable for understanding the efficacy of certain ESMs in simulating the global carbon cycle and future climate impacts. In this work, we studied the model performance of 22 ESMs participating in the fifth and sixth phases of the Coupled Model Intercomparison Project (CMIP5 and CMIP6) by comparing historical GPP and NPP simulations with satellite data from MODIS and further evaluating potential model improvement from CMIP5 to CMIP6.

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Single-cell transcriptomics can provide quantitative molecular signatures for large, unbiased samples of the diverse cell types in the brain. With the proliferation of multi-omics datasets, a major challenge is to validate and integrate results into a biological understanding of cell-type organization. Here we generated transcriptomes and epigenomes from more than 500,000 individual cells in the mouse primary motor cortex, a structure that has an evolutionarily conserved role in locomotion.

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The primary motor cortex (M1) is essential for voluntary fine-motor control and is functionally conserved across mammals. Here, using high-throughput transcriptomic and epigenomic profiling of more than 450,000 single nuclei in humans, marmoset monkeys and mice, we demonstrate a broadly conserved cellular makeup of this region, with similarities that mirror evolutionary distance and are consistent between the transcriptome and epigenome. The core conserved molecular identities of neuronal and non-neuronal cell types allow us to generate a cross-species consensus classification of cell types, and to infer conserved properties of cell types across species.

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Background: Non-puerperal uterine inversion is a rare condition with diagnostic and surgical challenges. Clinically, the inverted uterus appears as a mass protruding from the vagina and is often misdiagnosed as a malignant tumor and surgically removed.

Case: An 11-year-old girl was admitted to the emergency room due to spontaneous vaginal mass protrusion.

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The Chinese national college students' life science competition has been held for three times, with good organization, large scale and high participation degree. The competition plays an important role in promoting life science education and research. This paper reports the form and status of the competition, statistically analyses the registration data and competition results by region and year, based on the previous three competitions.

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Background-Communities played a key role in preventing the spread of coronavirus, not only during the threshold period of the epidemic but also in the normal stage of prevention. Scientifically evaluating the community's work is necessary for prevention in the normal period of the epidemic and can provide a reference for the management of different countries. Methods-Based on data envelopment analysis (DEA), this article used community worker data to evaluate the matching of service supply and demand during the epidemic period and used co-word analysis to analyze the content and the residents' demands for community service from the threshold period to the normal period of the epidemic.

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Osteochondroma is one of the most common benign bone tumor; however, the surgical treatment still remains a challenge for those that occur at the distal tibiofibular interosseous location. Previously, the transfibular approach has been successfully described, but the potential damage of the syndesmosis would give rise to the instability of the ankle joint and thus may result in the unfavorable long-term outcome. Here, a revised strategy which can protect the syndesmotic complex is introduced.

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Alternative splicing (AS) is frequent during early mouse embryonic development. Specific histone post-translational modifications (hPTMs) have been shown to regulate exon splicing by either directly recruiting splice machinery or indirectly modulating transcriptional elongation. In this study, we hypothesized that hPTMs regulate expression of alternatively spliced genes for specific processes during differentiation.

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Synopsis of recent research by authors named "Qiwen Hu"

  • - Qiwen Hu's recent research centers on antimicrobial treatments, employing innovative techniques such as a NanoLuc-based bioluminescence system for in vivo evaluations, as well as exploring the potential of phage therapy against Staphylococcus aureus biofilms, indicating a strong focus on infectious diseases and novel therapeutic strategies.
  • - The author's work encompasses advancements in genome editing technologies, particularly the development of a CRISPR-deaminase-assisted base editor intended for simultaneous editing of multiple loci, which addresses significant challenges in the field of industrial biotechnology.
  • - Hu's studies also delve into molecular and cellular mechanisms underlying diseases, such as the effects of iron overload in endometriosis and the impact of specific histone modifications on alternative splicing during development, highlighting a commitment to understanding disease pathology at the cellular level.

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