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1.
J Environ Manage ; 360: 121088, 2024 May 11.
Article in English | MEDLINE | ID: mdl-38735070

ABSTRACT

Residue returning (RR) was widely implemented to increase soil organic carbon (SOC) in farmland. Extensive studies concentrated on the effects of RR on SOC quantity instead of SOC fractions at aggregate scales. This study investigated the effects of 20-year RR on the distribution of labile (e.g., dissolved, microbial biomass, and permanganate oxidizable organic) and stable (e.g., microbial necromass) carbon fractions at aggregate scales, as well as their contribution to SOC accumulation and mineralization. The findings indicated a synchronized variation in the carbon content of bacterial and fungal necromass. Residue retention (RR) notably elevated the concentration of bacterial and fungal necromass carbon, while it did not amplify the microbial necromass carbon (MNC) contribution to SOC when compared to residue removal (R0) in the topsoil (0-5 cm). In the subsoil (5-15 cm), RR increased the MNC contribution to SOC concentration by 21.2%-33.4% and mitigated SOC mineralization by 12.6% in micro-aggregates (P < 0.05). Besides, RR increased soil ß-glucosidase and peroxidase activities but decreased soil phenol oxidase activity in micro-aggregates (P < 0.05). These indicated that RR might accelerate cellulose degradation and conversion to stable microbial necromass C, and thus RR improved SOC stability because SOC occluded in micro-aggregates were more stable. Interestingly, SOC concentration was mainly regulated by MNC, while SOC mineralization was by dissolved organic carbon under RR, both of which were affected by soil carbon, nitrogen, and phosphorus associated nutrients and enzyme activities. The findings of this study emphasize that the paths of RR-induced SOC accumulation and mineralization were different, and depended on stable and labile C, respectively. Overall, long-term RR increased topsoil carbon quantity and subsoil carbon quality.

2.
Anal Chem ; 96(14): 5648-5657, 2024 Apr 09.
Article in English | MEDLINE | ID: mdl-38556994

ABSTRACT

Nanochannels are a powerful technique for detecting a wide range of biomolecules without labeling. The ion transport phenomena in nanochannel arrays differ from those in single nanochannels and are caused by interchannel communication. This study uses a fully coupled Poisson-Nernst-Planck (PNP) and Navier-Stokes model to investigate ion transport in nanochannel arrays. Instead of being set at a constant value, the surface charge density used in this study is established by the protonation and deprotonation of the silanol groups that are present on the walls of the silicon-based nanochannels. The surface charge density of the nanochannel walls varies with the number of nanochannels, the channel lateral distance, and the background solution properties, which consequently influence the ionic concentration distribution, flow velocity, and electric field strength. For example, in different numbers of nanochannel systems, the ion concentration in nanochannels is not much different, but it is different in reservoirs, especially near the openings of nanochannels. The number of nanochannels and the distance between nanochannels can also affect the formation of electro-convective vortex zones under certain conditions. These findings can aid in optimizing the nanochannel array design by regulating the number and distance of nanochannels and facilitating the construction of solid-state nanochannel arrays with any desired nanochannel dimensions.

3.
Nat Genet ; 56(5): 953-969, 2024 May.
Article in English | MEDLINE | ID: mdl-38627598

ABSTRACT

The mechanism by which mammalian liver cell responses are coordinated during tissue homeostasis and perturbation is poorly understood, representing a major obstacle in our understanding of many diseases. This knowledge gap is caused by the difficulty involved with studying multiple cell types in different states and locations, particularly when these are transient. We have combined Stereo-seq (spatiotemporal enhanced resolution omics-sequencing) with single-cell transcriptomic profiling of 473,290 cells to generate a high-definition spatiotemporal atlas of mouse liver homeostasis and regeneration at the whole-lobe scale. Our integrative study dissects in detail the molecular gradients controlling liver cell function, systematically defining how gene networks are dynamically modulated through intercellular communication to promote regeneration. Among other important regulators, we identified the transcriptional cofactor TBL1XR1 as a rheostat linking inflammation to Wnt/ß-catenin signaling for facilitating hepatocyte proliferation. Our data and analytical pipelines lay the foundation for future high-definition tissue-scale atlases of organ physiology and malfunction.


Subject(s)
Homeostasis , Liver Regeneration , Liver , Wnt Signaling Pathway , Animals , Liver Regeneration/genetics , Mice , Liver/metabolism , Wnt Signaling Pathway/genetics , Hepatocytes/metabolism , Hepatocytes/cytology , Cell Proliferation/genetics , Single-Cell Analysis , Gene Regulatory Networks , Gene Expression Profiling/methods , Transcriptome , Mice, Inbred C57BL , Receptors, Cytoplasmic and Nuclear/genetics , Receptors, Cytoplasmic and Nuclear/metabolism , Male
4.
Sci Rep ; 14(1): 5343, 2024 03 04.
Article in English | MEDLINE | ID: mdl-38438532

ABSTRACT

This study aimed to develop a predictive nomogram model to estimate the odds of osteoporosis (OP) in elderly patients with type 2 diabetes mellitus (T2DM) and validate its prediction efficiency. The hospitalized elderly patients with T2DM from the Affiliated Hospital of North Sichuan Medical University between July 2022 and March 2023 were included in this study. We sorted them into the model group and the validation group with a ratio of 7:3 randomly. The selection operator regression (LASSO) algorithm was utilized to select the optimal matching factors, which were then included in a multifactorial forward stepwise logistic regression to determine independent influencing factors and develop a nomogram. The discrimination, accuracy, and clinical efficacy of the nomogram model were analyzed utilizing the receiver operating characteristic (ROC) curve, calibration curve, and clinical decision curve analysis (DCA). A total of 379 study participants were included in this study. Gender (OR = 8.801, 95% CI 4.695-16.499), Geriatric Nutritional Risk Index (GNRI) < 98 (OR = 4.698, 95% CI 2.416-9.135), serum calcium (Ca) (OR = 0.023, 95% CI 0.003-0.154), glycated hemoglobin (HbA1c) (OR = 1.181, 95% CI 1.055-1.322), duration of diabetes (OR = 1.076, 95% CI 1.034-1.119), and serum creatinine (SCr) (OR = 0.984, 95% CI 0.975-0.993) were identified as independent influencing factors for DOP occurrence in the elderly. The area under the curve (AUC) of the nomogram model was 0.844 (95% CI 0.797-0.89) in the modeling group and 0.878 (95% CI 0.814-0.942) in the validation group. The nomogram clinical prediction model was well generalized and had moderate predictive value (AUC > 0.7), better calibration, and better clinical benefit. The nomogram model established in this study has good discrimination and accuracy, allowing for intuitive and individualized analysis of the risk of DOP occurrence in elderly individuals. It can identify high-risk populations and facilitate the development of effective preventive measures.


Subject(s)
Anthraquinones , Diabetes Mellitus, Type 2 , Osteoporosis , Pyrazoles , Aged , Humans , Diabetes Mellitus, Type 2/complications , Models, Statistical , Nomograms , Prognosis , Osteoporosis/epidemiology
5.
Comput Biol Med ; 171: 108155, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38430740

ABSTRACT

OBJECTIVE: The current models of estimating vascular age (VA) primarily rely on the regression label expressed with chronological age (CA), which does not account individual differences in vascular aging (IDVA) that are difficult to describe by CA. This may lead to inaccuracies in assessing the risk of cardiovascular disease based on VA. To address this limitation, this work aims to develop a new method for estimating VA by considering IDVA. This method will provide a more accurate assessment of cardiovascular disease risk. METHODS: Relative risk difference in vascular aging (RRDVA) is proposed to replace IDVA, which is represented as the numerical difference between individual predicted age (PA) and the corresponding mean PA of healthy population. RRDVA and CA are regard as the influence factors to acquire VA. In order to acquire PA of all samples, this work takes CA as the dependent variable, and mines the two most representative indicators from arteriosclerosis data as the independent variables, to establish a regression model for obtaining PA. RESULTS: The proposed VA based on RRDVA is significantly correlated with 27 indirect indicators for vascular aging evaluation. Moreover, VA is better than CA by comparing the correlation coefficients between VA, CA and 27 indirect indicators, and RRDVA greater than zero presents a higher risk of disease. CONCLUSION: The proposed VA overcomes the limitation of CA in characterizing IDVA, which may help young groups with high disease risk to promote healthy behaviors.


Subject(s)
Cardiovascular Diseases , Humans , Aging , Risk Factors
6.
Pharmaceuticals (Basel) ; 17(3)2024 Feb 20.
Article in English | MEDLINE | ID: mdl-38543054

ABSTRACT

Sepsis-induced ALI is marked by physiological, pathological, and biochemical irregularities caused by infection. Growth differentiation factor 3 (GDF3) is closely associated with the inflammatory response. Accumulating evidence has demonstrated a close relationship between GDF3 expression and the severity and prognosis of sepsis. However, the precise mechanism by which GDF3 protects against ALI induced by sepsis is still unclear. Following the intravenous administration of GDF3 in this research, we noted a rise in the survival rate, a decrease in the severity of histopathological damage as evaluated through HE staining, a decline in the count of inflammatory cells in bronchoalveolar lavage fluid (BALF), a reduction in the ratio of lung wet/dry (W/D) weight, and a noteworthy decrease in the levels of pro-inflammatory cytokines in both serum and BALF when compared to septic mice who underwent cecal ligation and puncture (CLP). These collective findings unequivocally indicate the protective effects of GDF3 against sepsis-induced ALI. In addition, the GDF3 group showed a significant reduction in the mRNA expression of Caspase-1 and NLRP3 when compared to the CLP group. Following this, we performed in vitro tests to confirm these discoveries and obtained comparable outcomes, wherein the administration of GDF3 notably decreased the levels of Caspase-1 and NLRP3 mRNA and protein in macrophages in comparison to the LPS group. Furthermore, GDF3 exhibited the capacity to reduce the secretion of inflammatory molecules from macrophages. By illuminating the mechanism by which GDF 3 regulates macrophages, this offers a theoretical basis for preventing and treating sepsis-induced ALI.

7.
iScience ; 27(2): 109009, 2024 Feb 16.
Article in English | MEDLINE | ID: mdl-38333704

ABSTRACT

The avian optic tectum (OT) has been studied for its diverse functions, yet a comprehensive molecular landscape at the cellular level has been lacking. In this study, we applied spatial transcriptome sequencing and single-nucleus RNA sequencing (snRNA-seq) to explore the cellular organization and molecular characteristics of the avian OT from two species: Columba livia and Taeniopygia guttata. We identified precise layer structures and provided comprehensive layer-specific signatures of avian OT. Furthermore, we elucidated diverse functions in different layers, with the stratum griseum periventriculare (SGP) potentially playing a key role in advanced functions of OT, like fear response and associative learning. We characterized detailed neuronal subtypes and identified a population of FOXG1+ excitatory neurons, resembling those found in the mouse neocortex, potentially involved in neocortex-related functions and expansion of avian OT. These findings could contribute to our understanding of the architecture of OT, shedding light on visual perception and multifunctional association.

8.
Cell Metab ; 36(2): 438-453.e6, 2024 02 06.
Article in English | MEDLINE | ID: mdl-38325338

ABSTRACT

The hypothalamus plays a crucial role in the progression of obesity and diabetes; however, its structural complexity and cellular heterogeneity impede targeted treatments. Here, we profiled the single-cell and spatial transcriptome of the hypothalamus in obese and sporadic type 2 diabetic macaques, revealing primate-specific distributions of clusters and genes as well as spatial region, cell-type-, and gene-feature-specific changes. The infundibular (INF) and paraventricular nuclei (PVN) are most susceptible to metabolic disruption, with the PVN being more sensitive to diabetes. In the INF, obesity results in reduced synaptic plasticity and energy sensing capability, whereas diabetes involves molecular reprogramming associated with impaired tanycytic barriers, activated microglia, and neuronal inflammatory response. In the PVN, cellular metabolism and neural activity are suppressed in diabetic macaques. Spatial transcriptomic data reveal microglia's preference for the parenchyma over the third ventricle in diabetes. Our findings provide a comprehensive view of molecular changes associated with obesity and diabetes.


Subject(s)
Diabetes Mellitus , Paraventricular Hypothalamic Nucleus , Animals , Paraventricular Hypothalamic Nucleus/metabolism , Transcriptome/genetics , Hypothalamus/metabolism , Obesity/metabolism , Diabetes Mellitus/metabolism , Gene Expression Profiling
9.
J Diabetes Sci Technol ; : 19322968241232378, 2024 Feb 19.
Article in English | MEDLINE | ID: mdl-38372235

ABSTRACT

INTRODUCTION: Continuous glucose monitoring (CGM) is emerging as a transformative tool for helping people with diabetes self-manage their glucose and supporting clinicians in effective treatment. Unfortunately, many CGM users, and clinicians, find interpreting the large volume of CGM data to be overwhelming and complex. To address this challenge, an efficient, intelligent method for detecting and classifying discernable patterns in CGM data was desired. METHODS: We developed an automated artificial intelligence (AI)-driven method to detect and classify different discernable CGM patterns which called "CGM events." We trained different models using 60 days of CGM data from 27 individuals with diabetes from a publicly available data set and then evaluated model performance using separate test data from the same group. Each event is classified according to clinical significance based on three parameters: (1) glucose category at or near the beginning of the CGM event; (2) a calculated severity score that encompasses both signal shape and temporal characteristics (e.g., how high the CGM curve goes (measured in mg/dL) and how long it stays above target (as established by published consensus guidelines); and (3) the glucose category at or near the end of the event. RESULTS: The system accurately detected and classified events from actual CGM data. This was also validated with expert diabetes clinicians. CONCLUSIONS: Advanced pattern recognition methods can be used to detect and classify CGM events of interest and may be used to provide actionable insights and self-management support to CGM users and decision support to the clinicians caring for them.

10.
Sci Rep ; 14(1): 4610, 2024 02 26.
Article in English | MEDLINE | ID: mdl-38409245

ABSTRACT

Acute carbon monoxide (CO) poisoning is a prevalent type of poisoning that causes significant harm globally. Delayed encephalopathy after acute carbon monoxide poisoning (DEACMP) is a severe complication that occurs after acute CO poisoning; however, the exact underlying pathological cause of DEACMP remains unclear. Accumulating evidence indicates that abnormal inflammation and immune-mediated brain damage, cellular apoptosis and autophagy, and direct neuronal toxicity are involved in the development of delayed neurologic sequelae. Sodium butyrate, a histone deacetylase inhibitor, has gained increasing attention for its numerous beneficial effects on various diseases, such as obesity, diabetes, inflammatory diseases, and cerebral damage. In this study, an acute carbon monoxide poisoning (ACOP) model is established in rats to investigate the mechanism of CO poisoning and the therapeutic potential of sodium butyrate. The results suggested that the ACOP rats had impaired spatial memory, and cell apoptosis was observed in the hippocampi with activated autophagy. Sodium butyrate treatment further increased the activation of autophagy in the hippocampi of CO-exposed rats, inhibited apoptosis, and consolidated spatial memory. These findings indicated that sodium butyrate may improve memory and cognitive function in ACMP rats by promoting autophagy and inhibiting apoptosis.


Subject(s)
Brain Diseases , Brain Injuries , Carbon Monoxide Poisoning , Neuroprotective Agents , Rats , Animals , Neuroprotective Agents/pharmacology , Neuroprotective Agents/therapeutic use , Carbon Monoxide Poisoning/drug therapy , Carbon Monoxide Poisoning/complications , Brain Diseases/pathology , Butyric Acid/pharmacology , Butyric Acid/therapeutic use , Signal Transduction , Brain Injuries/complications , TOR Serine-Threonine Kinases/metabolism , Autophagy
11.
Hum Mol Genet ; 33(4): 342-354, 2024 Feb 01.
Article in English | MEDLINE | ID: mdl-37944069

ABSTRACT

Peripheral blood mononuclear cells (PBMCs) reflect systemic immune response during cancer progression. However, a comprehensive understanding of the composition and function of PBMCs in cancer patients is lacking, and the potential of these features to assist cancer diagnosis is also unclear. Here, the compositional and status differences between cancer patients and healthy donors in PBMCs were investigated by single-cell RNA sequencing (scRNA-seq), involving 262,025 PBMCs from 68 cancer samples and 14 healthy samples. We observed an enhanced activation and differentiation of most immune subsets in cancer patients, along with reduction of naïve T cells, expansion of macrophages, impairment of NK cells and myeloid cells, as well as tumor promotion and immunosuppression. Based on characteristics including differential cell type abundances and/or hub genes identified from weight gene co-expression network analysis (WGCNA) modules of each major cell type, we applied logistic regression to construct cancer diagnosis models. Furthermore, we found that the above models can distinguish cancer patients and healthy donors with high sensitivity. Our study provided new insights into using the features of PBMCs in non-invasive cancer diagnosis.


Subject(s)
Leukocytes, Mononuclear , Neoplasms , Humans , Single-Cell Gene Expression Analysis , Neoplasms/diagnosis , Neoplasms/genetics , Cell Differentiation , Cell Transformation, Neoplastic
12.
Nat Commun ; 14(1): 8170, 2023 Dec 09.
Article in English | MEDLINE | ID: mdl-38071219

ABSTRACT

Human cancer cell lines have long served as tools for cancer research and drug discovery, but the presence and the source of intra-cell-line heterogeneity remain elusive. Here, we perform single-cell RNA-sequencing and ATAC-sequencing on 42 and 39 human cell lines, respectively, to illustrate both transcriptomic and epigenetic heterogeneity within individual cell lines. Our data reveal that transcriptomic heterogeneity is frequently observed in cancer cell lines of different tissue origins, often driven by multiple common transcriptional programs. Copy number variation, as well as epigenetic variation and extrachromosomal DNA distribution all contribute to the detected intra-cell-line heterogeneity. Using hypoxia treatment as an example, we demonstrate that transcriptomic heterogeneity could be reshaped by environmental stress. Overall, our study performs single-cell multi-omics of commonly used human cancer cell lines and offers mechanistic insights into the intra-cell-line heterogeneity and its dynamics, which would serve as an important resource for future cancer cell line-based studies.


Subject(s)
DNA Copy Number Variations , Neoplasms , Humans , Multiomics , Cell Line, Tumor , Epigenomics , Transcriptome , Neoplasms/genetics
13.
Cell Rep Med ; 4(10): 101231, 2023 10 17.
Article in English | MEDLINE | ID: mdl-37852187

ABSTRACT

Neoadjuvant chemotherapy (NAC) for rectal cancer (RC) shows promising clinical response. The modulation of the tumor microenvironment (TME) by NAC and its association with therapeutic response remain unclear. Here, we use single-cell RNA sequencing and spatial transcriptome sequencing to examine the cell dynamics in 29 patients with RC, who are sampled pairwise before and after treatment. We construct a high-resolution cellular dynamic landscape remodeled by NAC and their associations with therapeutic response. NAC markedly reshapes the populations of cancer-associated fibroblasts (CAFs), which is strongly associated with therapeutic response. The remodeled CAF subsets regulate the TME through spatial recruitment and crosstalk to activate immunity and suppress tumor progression through multiple cytokines, including CXCL12, SLIT2, and DCN. In contrast, the epithelial-mesenchymal transition of malignant cells is upregulated by CAF_FAP through MIR4435-2HG induction, resulting in worse outcomes. Our study demonstrates that NAC inhibits tumor progression and modulates the TME by remodeling CAFs.


Subject(s)
Cancer-Associated Fibroblasts , Rectal Neoplasms , Humans , Cancer-Associated Fibroblasts/pathology , Neoadjuvant Therapy , Transcriptome/genetics , Rectal Neoplasms/drug therapy , Rectal Neoplasms/genetics , Rectal Neoplasms/pathology , Cell Proliferation , Tumor Microenvironment/genetics
14.
Parasit Vectors ; 16(1): 271, 2023 Aug 09.
Article in English | MEDLINE | ID: mdl-37559132

ABSTRACT

BACKGROUND: Pathogenic viruses can be transmitted by female Aedes aegypti (Ae. aegypti) mosquitoes during blood-meal acquisition from vertebrates. Silencing of mosquito- and midgut-specific microRNA (miRNA) 1174 (miR-1174) impairs blood intake and increases mortality. Determining the identity of the proteins and metabolites that respond to miR-1174 depletion will increase our understanding of the molecular mechanisms of this miRNA in controlling blood-feeding and nutrient metabolism of mosquitoes. METHODS: Antisense oligonucleotides (antagomirs [Ant]) Ant-1174 and Ant-Ct were injected into female Ae. aegypti mosquitoes at 12-20 h posteclosion, and depletion of miR-1174 was confirmed by reverse transcription quantitative real-time PCR (RT-qPCR). Ant-1174-injected and control mosquitoes were collected before the blood meal at 72 h post-injection for tandem mass tag-based proteomic analysis and liquid chromatography-tandom mass spectrometry non-target metabolomic analysis to identify differentially expressed proteins and metabolites, respectively. RNA interference (RNAi) using double-stranded RNA (dsRNA) injection was applied to investigate the biological roles of these differentially expressed genes. The RNAi effect was verified by RT-qPCR and western blotting assays. Triglyceride content and ATP levels were measured using the appropriate assay kits, following the manufacturers' instructions. Statistical analyses were conducted with GraphPad7 software using the Student's t-test. RESULTS: Upon depletion of mosquito- and midgut-specific miR-1174, a total of 383 differentially expressed proteins (DEPs) were identified, among which 258 were upregulated and 125 were downregulated. Functional analysis of these DEPs using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment suggested that miR-1174 plays important regulatory roles in amino acid metabolism, nucleotide metabolism, fatty acid metabolism and sugar metabolism pathways. A total of 292 differential metabolites were identified, of which 141 were upregulated and 151 were downregulated. Integrative analysis showed that the associated differential proteins and metabolites were mainly enriched in a variety of metabolic pathways, including glycolysis, citrate cycle, oxidative phosphorylation and amino acid metabolism. Specifically, the gene of one upregulated protein in miR-1174-depleted mosquitoes, purine nucleoside phosphorylase (PNP; AAEL002269), was associated with the purine, pyrimidine and niacin-nicotinamide metabolism pathways. PNP knockdown seriously inhibited blood digestion and ovary development and increased adult mortality. Mechanically, PNP depletion led to a significant downregulation of the vitellogenin gene (Vg); in addition, some important genes in the ecdysone signaling and insulin-like peptide signaling pathways related to ovary development were affected. CONCLUSIONS: This study demonstrates differential accumulation of proteins and metabolites in miR-1174-depleted Ae. aegypti mosquitoes using proteomic and metabolomic techniques. The results provide functional evidence for the role of the upregulated gene PNP in gut physiological activities. Our findings highlight key molecular changes in miR-1174-depleted Ae. aegypti mosquitoes and thus provide a basis and novel insights for increased understanding of the molecular mechanism involved in a lineage-specific miRNA in mosquito vectors.


Subject(s)
Aedes , MicroRNAs , Animals , Female , Humans , Aedes/physiology , MicroRNAs/genetics , MicroRNAs/metabolism , Proteome/metabolism , Proteomics , Mosquito Vectors/genetics , Insulin/metabolism , Amino Acids/metabolism , Metabolome
15.
Front Immunol ; 14: 1152336, 2023.
Article in English | MEDLINE | ID: mdl-37266445

ABSTRACT

Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS), the prime causes of morbidity and mortality in critically ill patients, are usually treated by general supportive treatments. Endoplasmic reticulum autophagy (ER-phagy) maintains cellular homeostasis by degrading damaged endoplasmic reticulum (ER) fragments and misfolded proteins. ER-phagy is crucial for maintaining ER homeostasis and improving the internal environment. ER-phagy has a particular role in some aspects, such as immunity, inflammation, cell death, pathogen infection, and collagen quality. In this review, we summarized the definition, epidemiology, and pathophysiology of ALI/ARDS and described the regulatory mechanisms and functions of ER-phagy as well as discussed the potential role of ER-phagy in ALI/ARDS from the perspectives of immunity, inflammation, apoptosis, pathogen infection, and fibrosis to provide a novel and effective target for improving the prognosis of ALI/ARDS.


Subject(s)
Acute Lung Injury , Endoplasmic Reticulum Stress , Humans , Endoplasmic Reticulum Stress/physiology , Autophagy/physiology , Endoplasmic Reticulum/metabolism , Inflammation/metabolism , Acute Lung Injury/metabolism
16.
Medicine (Baltimore) ; 102(22): e33731, 2023 Jun 02.
Article in English | MEDLINE | ID: mdl-37266599

ABSTRACT

Long noncoding RNA MCM3AP-AS1 plays critical roles in cancers, but its role in atherosclerosis is yet to be elucidated. The expression of MCM3AP-AS1 in atherosclerosis and control plasma samples were measured by RT-qPCR. IntaRNA was used to predict potential base pairings between MCM3AP-AS1 and miR-448, and the results were confirmed by a dual luciferase activity assay. Cell proliferation assay was performed to explore the role of overexpression of MCM3AP-AS1, miR-448, and myocyte enhancer factor 2 (MEF2)-C in the proliferation of human aortic smooth muscle cells (HAOSMCs). MCM3AP-AS1 was downregulated in atherosclerosis and directly interacted with miR-448, which is a critical player in the proliferation of HAOSMCs, indicating its involvement in atherosclerosis. However, MCM3AP-AS1 and miR-448 showed no role in regulating the expression of each other. In contrast, overexpression of MCM3AP-AS1 increased the expression levels of MEF2-C, which can be targeted by miR-448. Moreover, MCM3AP-AS1 was found to inhibit the effects of miR-448 overexpression on both HAOSMC proliferation and MEF2-C expression. MCM3AP-AS1 is downregulated in atherosclerosis and sponges miR-448 to suppress the proliferation of HAOSMCs.


Subject(s)
Atherosclerosis , MicroRNAs , RNA, Long Noncoding , Humans , MicroRNAs/genetics , MicroRNAs/metabolism , RNA, Long Noncoding/metabolism , Muscle, Smooth, Vascular/metabolism , Atherosclerosis/genetics , Atherosclerosis/metabolism , Cell Proliferation/genetics , Acetyltransferases/genetics , Acetyltransferases/metabolism , Intracellular Signaling Peptides and Proteins/metabolism
17.
Cell Res ; 33(8): 585-603, 2023 08.
Article in English | MEDLINE | ID: mdl-37337030

ABSTRACT

Dissecting and understanding the cancer ecosystem, especially that around the tumor margins, which have strong implications for tumor cell infiltration and invasion, are essential for exploring the mechanisms of tumor metastasis and developing effective new treatments. Using a novel tumor border scanning and digitization model enabled by nanoscale resolution-SpaTial Enhanced REsolution Omics-sequencing (Stereo-seq), we identified a 500 µm-wide zone centered around the tumor border in patients with liver cancer, referred to as "the invasive zone". We detected strong immunosuppression, metabolic reprogramming, and severely damaged hepatocytes in this zone. We also identified a subpopulation of damaged hepatocytes with increased expression of serum amyloid A1 and A2 (referred to collectively as SAAs) located close to the border on the paratumor side. Overexpression of CXCL6 in adjacent malignant cells could induce activation of the JAK-STAT3 pathway in nearby hepatocytes, which subsequently caused SAAs' overexpression in these hepatocytes. Furthermore, overexpression and secretion of SAAs by hepatocytes in the invasive zone could lead to the recruitment of macrophages and M2 polarization, further promoting local immunosuppression, potentially resulting in tumor progression. Clinical association analysis in additional five independent cohorts of patients with primary and secondary liver cancer (n = 423) showed that patients with overexpression of SAAs in the invasive zone had a worse prognosis. Further in vivo experiments using mouse liver tumor models in situ confirmed that the knockdown of genes encoding SAAs in hepatocytes decreased macrophage accumulation around the tumor border and delayed tumor growth. The identification and characterization of a novel invasive zone in human cancer patients not only add an important layer of understanding regarding the mechanisms of tumor invasion and metastasis, but may also pave the way for developing novel therapeutic strategies for advanced liver cancer and other solid tumors.


Subject(s)
Ecosystem , Liver Neoplasms , Mice , Animals , Humans , Liver Neoplasms/pathology , Hepatocytes/metabolism , Immunosuppression Therapy , Cell Line, Tumor
18.
Medicine (Baltimore) ; 102(26): e34150, 2023 Jun 30.
Article in English | MEDLINE | ID: mdl-37390293

ABSTRACT

BACKGROUND: To explore the efficacy and safety of electroacupuncture (EA) for secondary insomnia through a meta-analysis and a systematic review. METHODS: The CNKI, Wanfang, VIP database, Web of Science, EMBASE, PubMed, and Cochrane Library were retrieved. The retrieval date was February 28, 2023. Two independent reviewers conducted literature screening, data extraction, and risk of bias (ROB) assessment. The revised Cochrane ROB tool was used to assess the ROB in included studies. Data analysis was performed using RevMan 5.4 software and Stata 15.0. RESULTS: Thirteen randomized controlled studies were included, involving 820 patients, including 414 patients in EA group and 406 patients in the control group. Compared with the control group, EA could improve secondary insomnia overall responses (relative risk = 3.90, 95% confidence interval [CI] [1.87, 8.13], P < .001), reduce Pittsburgh Sleep Quality Index score (mean difference [MD] = -2.26, 95% CI [-4.14, -0.37], P = .02), reduce Athens Insomnia Scale score (MD = -0.57, 95% CI [-2.70, 1.56], P = .60), prolonged total sleep time (MD = 2.63, 95% CI [-0.59, 5.86], P = .11), and not increase adverse events (relative risk = 0.50, 95% CI [0.18, 1.44], P = .20). CONCLUSION: EA may be a promising treatment for secondary sleep disorders; however, more high-quality studies are needed to confirm our findings.


Subject(s)
Electroacupuncture , Sleep Initiation and Maintenance Disorders , Humans , Electroacupuncture/adverse effects , Sleep Initiation and Maintenance Disorders/therapy , Control Groups , Data Analysis , Databases, Factual
19.
Am J Transl Res ; 15(3): 1640-1653, 2023.
Article in English | MEDLINE | ID: mdl-37056863

ABSTRACT

BACKGROUND: Gastric cancer (GC) is one of the most common malignancies worldwide with a poor prognosis due to the lack of early detection and effective treatments. As a biomarker, collagen type I alpha 1 (COL1A1) is often dysregulated in some cancer types. However, the expression profile of COL1A1 and functional mechanism in GC is still unclear. METHODS: To screen for the different expression genes of GC vs. adjacent tissues, an RNA-seq dataset containing 30 clinical samples and multi-omics datasets of 478 samples were obtained from Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases, respectively. Then the functional enrichment analysis and survival analysis of dysregulated genes were performed. Furthermore, through constructing the protein-protein interactive network, the function mode of COL1A1 was studied. Finally, a prognostic model was built by least absolute shrinkage and selection operator (LASSO) Cox algorithm to assess the clinical value of COL1A1-network. RESULTS: Firstly, a total of 89 different expression genes (58 down-regulated and 31 up-regulated) that appeared simultaneously in both GEO and TCGA datasets were detected and enriched in some functions regarding the extracellular matrix. However, only 12 genes were significantly correlative with overall survival of GC patients. Among them, ASPN, COL1A1, COL12A1, FNDC1, INHBA and MMP12 could form a network that might activate the epithelial-mesenchymal transition (EMT) pathway. Meanwhile, a prognostic model containing ASPN and INHBA was able to divide GC patients into 2 groups with different risks and predict 5-years survival accurately (AUC = 0.732, 95% CI (0.619, 0.845)). CONCLUSION: COL1A1 is up-regulated in GC and may result in a poor prognosis with a higher mRNA level. Moreover, the COL1A1-network may promote malignant metastasis via EMT pathway activation and act as a prognostic marker.

20.
BMC Public Health ; 23(1): 611, 2023 03 30.
Article in English | MEDLINE | ID: mdl-36997899

ABSTRACT

OBJECTIVE: To systematically evaluate the association between maternal active smoking during pregnancy and Tourette syndrome (TS), chronic tic disorder (CTD), and developmental coordination disorder (DCD) in children, and to provide evidence-based medical references to reduce the incidence of neurodevelopmental disorders in children. METHOD: We searched PubMed, Web of Science, Embase, and Cochrane Library to obtain relevant articles published before 4 August 2021. Two reviewers independently assessed the articles for eligibility and extracted data. RESULTS: We included eight studies involving a total of 50,317 participants (3 cohort, 3 case-control, and 2 cross-sectional studies). The pooled effect estimates suggested that prenatal maternal active smoking is related to an increased risk of neurodevelopmental disorders (OR = 1.91, 95% CI: 1.30-2.80), especially DCD (OR = 2.25, 95% CI: 1.35-3.75). Maternal active smoking during pregnancy is not associated with TS (OR = 1.07, 95% CI: 0.66-1.73) in children. CONCLUSION: In this meta-analysis, we found evidence for a correlation between active smoking exposure in pregnant women and neurodevelopmental disorders in children. Owing to the differences in sample size, smoking categories and diagnostic methods, further research is needed to validate our results.


Subject(s)
Neurodevelopmental Disorders , Smoking , Child , Humans , Female , Pregnancy , Cross-Sectional Studies , Smoking/epidemiology , Smoking/adverse effects , Neurodevelopmental Disorders/epidemiology , Neurodevelopmental Disorders/etiology , Tobacco Smoking , Family
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