Publications by authors named "Ruoqi Yang"

Agricultural soils are a significant contributor to global nitrous oxide (NO) emissions, which is primarily driven by microbial nitrification and denitrification processes. Diversifying crop rotations can enhance soil nitrogen (N) utilization and influence N-cycling microbes, particularly the denitrifiers. Here, we evaluated the abundance, diversity, and community structure of soil denitrifiers by analyzing the denitrification genes (nirS, nirK, and nosZI) with a 14-year experiment of continuous and rotated crop systems.

View Article and Find Full Text PDF

Fragment-Based Drug Design (FBDD) plays a pivotal role in the field of drug discovery and development. The construction of high-quality fragment libraries is a critical step in FBDD. Conventional fragmentation approaches often rely on rigid rules and chemical intuition, limiting their adaptability to diverse molecular structures.

View Article and Find Full Text PDF

Adaptive behavior requires the ability to shift responding within (intra-dimensional) or between (extra-dimensional) stimulus dimensions when reward contingencies change. Studies of shifting in humans have focused mainly on the prefrontal cortex and/ or have been restricted to indirect measures of neural activity such as fMRI and lesions. Here, we demonstrate the importance of the amygdala and hippocampus by recording local field potentials directly from these regions intracranially in human epilepsy patients.

View Article and Find Full Text PDF

Pesticide molecules, such as insecticides, play a critical role in modern agricultural production. Traditional pesticide development methods are often inefficient and expensive, while data-driven artificial intelligence (AI) techniques have emerged as a useful tool to facilitate drug discovery. However, currently available commercial pesticide data is limited, which makes the trained models unsatisfactory in terms of performance and generalization.

View Article and Find Full Text PDF

Determination of protein-ligand binding affinity (PLA) is a key technological tool in hit discovery and lead optimization, which is critical to the drug development process. PLA can be determined directly by experimental methods, but it is time-consuming and costly. In recent years, deep learning has been widely applied to PLA prediction, the key of which lies in the comprehensive and accurate representation of proteins and ligands.

View Article and Find Full Text PDF

The integration of multiple virtual screening strategies facilitates the balance of computational efficiency and prediction accuracy. In this study, we constructed an efficient and reliable "multi-stage virtual screening-in vitro biological validation" system to identify potential inhibitors targeting extracellular signal-regulated protein kinase 2 (ERK2). Firstly, we rapidly obtained 10 candidate ERK2 inhibitors with desirable pharmacokinetic characteristics from thousands of named natural products in ZINC database based on machine learning classification models and ADME/T prediction.

View Article and Find Full Text PDF

Ginseng is an important medicinal plant benefiting human health for thousands of years. Root disease is the main cause of ginseng yield loss. It is difficult to detect ginseng root disease by manual observation on the changes of leaves, as it takes a long time until symptoms appear on leaves after the infection on roots.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the interactions and emotional responses of the amygdala, orbitofrontal cortex (OFC), and medial prefrontal cortex (mPFC) using high-fidelity intracranial electroencephalography (iEEG) in 35 epilepsy patients, focusing on their activity during emotional picture viewing.
  • Findings reveal that negative emotional conditions trigger increased broadband gamma and beta activity in the amygdala and OFC, with specific changes in the mPFC, highlighting a complex relationship between these brain regions and emotional valence.
  • The results confirm a one-way influence of the mPFC over the amygdala and a two-way exchange between the OFC and both the amygdala and mP
View Article and Find Full Text PDF
Article Synopsis
  • Neurons in the primate lateral habenula respond to punishments and are suppressed by rewards, influencing behavior and linked to depressive symptoms, particularly with ketamine treatment.
  • Researchers recorded local field potentials from the habenula in 12 humans undergoing deep brain stimulation, overcoming past imaging limitations, which allowed them to observe neural activity during tasks involving monetary gains and losses.
  • The study found that high-frequency gamma activity increased with losses and decreased with rewards, reflecting cognitive processes in decision-making, and suggests that understanding these dynamics could enhance deep brain stimulation therapies for mood disorders.
View Article and Find Full Text PDF

c-Jun N-terminal kinase 1 (JNK1) is currently considered a critical therapeutic target for type-2 diabetes. In recent years, there has been a great interest in naturopathic molecules, and the discovery of active ingredients from natural products for specific targets has received increasing attention. Based on the above background, this research aims to combine emerging Artificial Intelligence technologies with traditional Computer-Aided Drug Design methods to find natural products with JNK1 inhibitory activity.

View Article and Find Full Text PDF

p38α is a mitogen-activated protein kinase (MAPK), and the signaling pathways involved are closely related to the inflammation, apoptosis and differentiation of cells, which also makes it an attractive target for drug discovery. With the high efficiency and low cost, virtual screening technology is becoming an indispensable part of drug development. In this study, a novel multi-stage virtual screening method based on machine learning, molecular docking and molecular dynamics simulation was developed to identify p38α MAPK inhibitors from natural products in ZINC database, which improves the prediction accuracy by considering and utilizing both ligand and receptor information compared to any individual approach.

View Article and Find Full Text PDF

Matrix metalloproteinase-2 (MMP-2) is capable of degrading Collage TypeIV in the vascular basement membrane and extracellular matrix. Studies have shown that MMP-2 is tightly associated with the biological behavior of malignant tumors. Therefore, the identification of inhibitors targeting MMP-2 could be effective in treating the disease by maintaining extracellular matrix homeostasis.

View Article and Find Full Text PDF
Article Synopsis
  • Neurophysiological studies indicate that the amygdala is crucial for reward processing, interacting with the orbitofrontal cortex (OFC) and hippocampus, but understanding this in humans has been limited due to noninvasive method restrictions.
  • To address this, researchers recorded local field potentials from these brain regions in epilepsy patients during a monetary incentive delay task, analyzing their activities during reward anticipation and receipt.
  • The results showed distinct patterns of brain wave activity associated with reward anticipation and receipt, revealing insights into memory encoding and the brain's response to rewards and losses, which could inform therapeutic approaches for psychiatric disorders related to dysfunctional reward processing.*
View Article and Find Full Text PDF