25,604 results match your criteria regulatory natural


Backbone resonance assignment of the cAMP-binding domains of the protein kinase A regulatory subunit Iα.

Biomol NMR Assign 2021 Jun 12. Epub 2021 Jun 12.

Department of Chemistry and Chemical Biology and Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada.

Protein kinase A (PKA) is the main receptor for the universal cAMP second messenger. PKA is a tetramer with two catalytic (C) and two regulatory (R) subunits, each including two tandem cAMP-binding domains, i.e. Read More

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Melatonin influences the early growth stage in Zoysia japonica Steud. by regulating plant oxidation and genes of hormones.

Sci Rep 2021 Jun 11;11(1):12381. Epub 2021 Jun 11.

College of Grassland Science, Beijing Forestry University, Beijing, 100083, China.

Zoysia japonica is a commonly used turfgrass species around the world. Seed germination is a crucial stage in the plant life cycle and is particularly important for turf establishment and management. Experiments have confirmed that melatonin can be a potential regulator signal in seeds. Read More

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Evaluation of the prognostic value of CBXs in gastric cancer patients.

Sci Rep 2021 Jun 11;11(1):12375. Epub 2021 Jun 11.

Department of Epidemiology, College of Public Health, Hainan Medical University, Longhua District, No.3 Xueyuan Road, Haikou, 570216, China.

Chromobox (CBX) proteins were suggested to exert epigenetic regulatory and transcriptionally repressing effects on target genes and might play key roles in the carcinogenesis of a variety of carcinomas. Nevertheless, the functions and prognostic significance of CBXs in gastric cancer (GC) remain unclear. The current study investigated the roles of CBXs in the prognosis of GC using the Oncomine, The Gene Expression Profiling Interactive Analysis (GEPIA), UALCAN, The Cancer Genome Atlas (TCGA), and cBioPortal databases. Read More

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Therapeutic potential of targeting Tfr/Tfh cell balance by low-dose-IL-2 in active SLE: a post hoc analysis from a double-blind RCT study.

Arthritis Res Ther 2021 Jun 11;23(1):167. Epub 2021 Jun 11.

Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, 100044, China.

Objective: To investigate the regulation of T follicular regulatory (Tfr) and T follicular (Tfh) cell subtypes by low-dose IL-2 in systemic lupus erythematosus (SLE) in a randomized, double-blind, placebo-controlled clinical trial.

Methods: A post hoc analysis was performed in a randomized cohort of SLE patients (n=60) receiving low-dose IL-2 therapy (n=30) or placebo (n=30), along with the standard of care treatment. The primary endpoint was the attainment of SLE responder index-4 (SRI-4) at week 12 in the trial. Read More

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Methionine enkephalin (MENK) suppresses lung cancer by regulating the Bcl-2/Bax/caspase-3 signaling pathway and enhancing natural killer cell-driven tumor immunity.

Int Immunopharmacol 2021 Jun 8;98:107837. Epub 2021 Jun 8.

Department of Immunology, School of Basic Medical Science, China Medical University, Shenyang 110122, China. Electronic address:

The aim of this study was to investigate how methionine enkephalin (MENK) regulates the biological behavior of lung cancer cells and to further explore its anti-lung cancer mechanisms in vitro and in vivo. The results showed that MENK enhanced the expression of opioid receptor (OGFr) and induced apoptosis of lung cancer cells by activating the Bcl-1/Bax/caspase-3 signaling pathway in vitro and in vivo. However, the regulatory effects of MENK disappeared after blockade of the OGFr. Read More

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Efficient representations of tumor diversity with paired DNA-RNA aberrations.

PLoS Comput Biol 2021 Jun 11;17(6):e1008944. Epub 2021 Jun 11.

Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America.

Cancer cells display massive dysregulation of key regulatory pathways due to now well-catalogued mutations and other DNA-related aberrations. Moreover, enormous heterogeneity has been commonly observed in the identity, frequency and location of these aberrations across individuals with the same cancer type or subtype, and this variation naturally propagates to the transcriptome, resulting in myriad types of dysregulated gene expression programs. Many have argued that a more integrative and quantitative analysis of heterogeneity of DNA and RNA molecular profiles may be necessary for designing more systematic explorations of alternative therapies and improving predictive accuracy. Read More

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Identification of potential diagnostic biomarkers in MMPs for pancreatic carcinoma.

Medicine (Baltimore) 2021 Jun;100(23):e26135

Department of Gastroenterology, Changhai Hospital, Navy Medical University.

Abstract: Pancreatic cancer (PC) is a malignant tumor which ranks fourth in cancer-related death. However, the specificity and sensitivity of traditional biomarkers such as carbohydrate antigen 19-9 no longer meet the clinical requirements.Tools as ONCOMINE and Gene Expression Profiling Interactive Analysis (GEPIA) were used to analyze the differential expression of matrix metalloproteinases (MMPs) in PC and adjacent tissues. Read More

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Wavelike propagation of quorum activation through a spatially distributed bacterial population under natural regulation.

Phys Biol 2021 Jun 11;18(4). Epub 2021 Jun 11.

Physics Department, University of Florida, Gainesville, FL 32611-8440, United States of America.

Many bacteria communicate using diffusible pheromone signals known as autoinducers. When the autoinducer concentration reaches a threshold, which requires a minimum population density or 'quorum', the bacteria activate specific gene regulatory pathways. Simple diffusion of autoinducer can activate quorum-dependent pathways in cells that are located at substantial distances from the secreting source. Read More

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A poplar B-box protein PtrBBX23 modulates the accumulation of anthocyanins and proanthocyanidins in response to high light.

Plant Cell Environ 2021 Jun 10. Epub 2021 Jun 10.

Laboratory of Forest Symbiology, Asian Natural Environmental Science Center, The University of Tokyo, 1-1-8 Midori-cho, Nishitokyo, Tokyo, Japan.

Flavonoids, which modulate plant resistance to various stresses, can be induced by high light. B-box (BBX) transcription factors (TFs) play crucial roles in the transcriptional regulation of flavonoids biosynthesis, but limited information is available on the association of BBX proteins with high light. We present a detailed overview of 45 Populus trichocarpa BBX TFs. Read More

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The Joubert syndrome protein CEP41 is excluded from the distal segment of cilia in .

MicroPubl Biol 2021 Jun 7;2021. Epub 2021 Jun 7.

Rare Disease Laboratory, School of Life and Natural Sciences, Abdullah Gul University, Kayseri, Turkey.

Rare diseases are a fundamental issue in today's world, affecting more than 300 million individuals worldwide. According to data from Orphanet and OMIM, about 50-60 new conditions are added to the list of over 6,000 clinically distinct diseases each year, rendering disease diagnosis and treatment even more challenging. Ciliopathies comprise a heterogeneous category of rare diseases made up of over 35 distinct diseases, including Joubert syndrome (JBTS; OMIM 213300), that are caused by functional and structural defects in cilia. Read More

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Mining of Gram-Negative Surface-Active Enzybiotic Candidates by Sequence-Based Calculation of Physicochemical Properties.

Front Microbiol 2021 25;12:660403. Epub 2021 May 25.

Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), Madrid, Spain.

Phage (endo)lysins are nowadays one of the most promising ways out of the current antibiotic resistance crisis. Either as sole therapeutics or as a complement to common antibiotic chemotherapy, lysins are already entering late clinical phases to get regulatory agencies' authorization. Even the old paradigm of the inability of lysins to attack Gram-negative bacteria from without has already been overcome in a variety of ways: either by engineering approaches or investigating the natural mechanisms by which some wild-type lysins are able to interact with the bacterial surface. Read More

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LncRNA CTD-2528L19.6 prevents the progression of IPF by alleviating fibroblast activation.

Cell Death Dis 2021 Jun 10;12(6):600. Epub 2021 Jun 10.

Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China.

Long non-coding RNAs (lncRNAs) have emerged as critical factors for regulating multiple biological processes during organ fibrosis. However, the mechanism of lncRNAs in idiopathic pulmonary fibrosis (IPF) remains incompletely understood. In the present study, two sets of lncRNAs were defined: IPF pathogenic lncRNAs and IPF progression lncRNAs. Read More

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Lower BCL11B expression is associated with adverse clinical outcome for patients with myelodysplastic syndrome.

Biomark Res 2021 Jun 10;9(1):46. Epub 2021 Jun 10.

Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632, Guangzhou, PR China.

Myelodysplastic syndrome (MDS) is an aggressive and genetically heterogeneous disease with poor prognosis. Cellular immune disorder is a common characteristic of this disease and is thought to be related to clinical outcome. Alterations in T cell clonal expansion and T cell dysfunction has been detected in MDS patients. Read More

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LncRNAs serve as novel biomarkers for diagnosis and prognosis of childhood ALL.

Biomark Res 2021 Jun 10;9(1):45. Epub 2021 Jun 10.

Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Big Data Mining and Precision Drug Design, School of Medical Technology, Guangdong Medical University, Guangdong Medical University, 523808, Dongguan, China.

Background: Although some studies have demonstrated that lncRNAs are dysregulated in hematopoietic malignancies and may regulate the progression of leukemia, the detailed mechanism underlying tumorigenesis is still unclear. This study aimed to investigate lncRNAs that are differentially expressed in childhood B-cell acute lymphoblastic leukemia (B-ALL) and T-cell acute lymphoblastic leukemia (T-ALL) and their potential roles in the progression of childhood ALL.

Methods: Microarrays were used to detect differentially expressed lncRNAs and mRNAs. Read More

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A novel method to identify gene interaction patterns.

BMC Genomics 2021 Jun 10;22(Suppl 1):436. Epub 2021 Jun 10.

College of Computer Science and Electronic Engineering, Hunan University, Lushan Nan Road, Changsha, 410082, China.

Background: Gene interaction patterns, including modules and motifs, can be used to identify cancer specific biomarkers and to reveal the mechanism of tumorigenesis. Most of the existing module network inferencing methods focus on gene independent functional patterns, while the studies of overlapping characteristics between modules are lacking. The objective of this study was to reveal the functional overlapping patterns in gene modules, helping elucidate the regulatory relationship between overlapping genes and communities, as well as to explore cancer formation and progression. Read More

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Augmenting aer2vec: Enriching Distributed Representations of Adverse Event Report Data with Orthographic and Lexical Information.

J Biomed Inform 2021 Jun 7:103833. Epub 2021 Jun 7.

Department of Biomedical Informatics & Medical Education, University of Washington, Seattle, WA, USA. Electronic address:

Adverse Drug Events (ADEs) are prevalent, costly, and sometimes preventable. Post-marketing drug surveillance aims to monitor ADEs that occur after a drug is released to market. Reports of such ADEs are aggregated by reporting systems, such as the Food and Drug Administration (FDA) Adverse Event Reporting System (FAERS). Read More

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Hookworm treatment induces a decrease of suppressive regulatory T cell associated with a Th2 inflammatory response.

PLoS One 2021 10;16(6):e0252921. Epub 2021 Jun 10.

Clinic of Immunoallergology, CHU Brugmann, ULB, Brussels, Belgium.

Background: Like other helminths, hookworms (HW) induce a regulatory immune response able to modulate and dampen reactivity of the host to antigens. No data about the evolution of the immune response after treatment are available. We aim to phenotype the regulatory immune response during natural HW infection and its evolution after treatment. Read More

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YB1 regulates miR-205/200b-ZEB1 axis by inhibiting microRNA maturation in hepatocellular carcinoma.

Cancer Commun (Lond) 2021 Jun 10. Epub 2021 Jun 10.

CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, P. R. China.

Background: Y-box binding protein 1 (YB1 or YBX1) plays a critical role in tumorigenesis and cancer progression. However, whether YB1 affects malignant transformation by modulating non-coding RNAs remains largely unknown. This study aimed to investigate the relationship between YB1 and microRNAs and reveal the underlying mechanism by which YB1 impacts on tumor malignancy via miRNAs-mediated regulatory network. Read More

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Advances in anoctamin 1: A Potential New Drug Target in Medicinal Chemistry.

Curr Top Med Chem 2021 Jun 7. Epub 2021 Jun 7.

School of life Science,Shanghai University, 99 Shangda Road,200444, China.

ANO1, anoctamin 1(also known as TMEM16A), is the molecular basis of calcium-activated chloride channels with ten transmembrane segments which are widely expressed in mammalian cells, including epithelial cells, vascular smooth muscle tissues, electro-excitatory cells, and some tumor cells. These proteins are widely expressed in mammalian cells, including epithelial cells, vascular smooth muscle tissues, electro-excitatory cells, and some tumor cells. To date, multiple studies have shown that many natural and synthetic compounds have regulatory effects on ANO1. Read More

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Social Integrating Robots Suggest Mitigation Strategies for Ecosystem Decay.

Front Bioeng Biotechnol 2021 24;9:612605. Epub 2021 May 24.

Department of Computer Science, IT University of Copenhagen, Copenhagen, Denmark.

We develop here a novel hypothesis that may generate a general research framework of how autonomous robots may act as a future contingency to counteract the ongoing ecological mass extinction process. We showcase several research projects that have undertaken first steps to generate the required prerequisites for such a technology-based conservation biology approach. Our main idea is to stabilise and support broken ecosystems by introducing artificial members, robots, that are able to blend into the ecosystem's regulatory feedback loops and can modulate natural organisms' local densities through participation in those feedback loops. Read More

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Intravitreal Gene Therapy vs. Natural History in Patients With Leber Hereditary Optic Neuropathy Carrying the m.11778G>A Mutation: Systematic Review and Indirect Comparison.

Front Neurol 2021 24;12:662838. Epub 2021 May 24.

Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.

This work aimed to compare the evolution of visual outcomes in Leber hereditary optic neuropathy (LHON) patients treated with intravitreal gene therapy to the spontaneous evolution in prior natural history (NH) studies. A combined analysis of two phase three randomized, double-masked, sham-controlled studies (REVERSE and RESCUE) and their joint long-term extension trial (CLIN06) evaluated the efficacy of rAAV2/2- vs. 11 pooled NH studies used as an external control. Read More

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Clinical and molecular characteristics of COVID-19 patients with persistent SARS-CoV-2 infection.

Nat Commun 2021 06 9;12(1):3501. Epub 2021 Jun 9.

Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

The characteristics of COVID-19 patients with persistent SARS-CoV-2 infection are not yet well described. Here, we compare the clinical and molecular features of patients with long duration of viral shedding (LDs) with those from patients with short duration patients (SDs), and healthy donors (HDs). We find that several cytokines and chemokines, such as interleukin (IL)-2, tumor necrosis factor (TNF) and lymphotoxin α (LT-α) are present at lower levels in LDs than SDs. Read More

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Argonaute Binding within Human Nuclear RNA and its Impact on Alternative Splicing.

RNA 2021 Jun 9. Epub 2021 Jun 9.

UTSW

Mammalian RNA interference (RNAi) is often linked to the regulation of gene expression in the cytoplasm. Synthetic RNAs, however, can also act through the RNAi pathway to regulate transcription and splicing. While nuclear regulation by synthetic RNAs can be robust, a critical unanswered question is whether endogenous functions for nuclear RNAi exist in mammalian cells. Read More

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Transcription shapes DNA replication initiation to preserve genome integrity.

Genome Biol 2021 Jun 9;22(1):176. Epub 2021 Jun 9.

The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Genome Editing Research Center, Peking University, Beijing, 100871, China.

Background: Early DNA replication occurs within actively transcribed chromatin compartments in mammalian cells, raising the immediate question of how early DNA replication coordinates with transcription to avoid collisions and DNA damage.

Results: We develop a high-throughput nucleoside analog incorporation sequencing assay and identify thousands of early replication initiation zones in both mouse and human cells. The identified early replication initiation zones fall in open chromatin compartments and are mutually exclusive with transcription elongation. Read More

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Adiponectin protects obesity-related glomerulopathy by inhibiting ROS/NF-κB/NLRP3 inflammation pathway.

BMC Nephrol 2021 Jun 10;22(1):218. Epub 2021 Jun 10.

Department of Endocrinology, The Third Affiliated Hospital of Soochow University, No.185 Bureau Front Street, 213003, Changzhou City, China.

Background: Adiponectin is an adipocytokine that plays a key regulatory role in glucose and lipid metabolism in obesity. The prevalence of obesity has led to an increase in the incidence of obesity-related glomerulopathy (ORG). This study aimed to identify the protective role of adiponectin in ORG. Read More

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ERK activation via A1542/3 limonoids attenuates erythroleukemia through transcriptional stimulation of cholesterol biosynthesis genes.

BMC Cancer 2021 Jun 9;21(1):680. Epub 2021 Jun 9.

State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.

Background: Cholesterol plays vital roles in human physiology; abnormal levels have deleterious pathological consequences. In cancer, elevated or reduced expression of cholesterol biosynthesis is associated with good or poor prognosis, but the underlying mechanisms are largely unknown. The limonoid compounds A1542 and A1543 stimulate ERK/MAPK by direct binding, leading to leukemic cell death and suppression of leukemia in mouse models. Read More

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Global investigation of estrogen-responsive genes regulating lipid metabolism in the liver of laying hens.

BMC Genomics 2021 Jun 9;22(1):428. Epub 2021 Jun 9.

College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.

Background: Estrogen plays an essential role in female development and reproductive function. In chickens, estrogen is critical for lipid metabolism in the liver. The regulatory molecular network of estrogen in chicken liver is poorly understood. Read More

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Quantitative proteomic analyses reveal that energy metabolism and protein biosynthesis reinitiation are responsible for the initiation of bolting induced by high temperature in lettuce (Lactuca sativa L.).

BMC Genomics 2021 Jun 9;22(1):427. Epub 2021 Jun 9.

Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Plant Science and Technology College, Beijing University of Agriculture, No. 7 Beinong Road, Huilongguan town, Changping district, Beijing, 102206, China.

Background: Lettuce (Lactuca sativa L.), one of the most economically important leaf vegetables, exhibits early bolting under high-temperature conditions. Early bolting leads to loss of commodity value and edibility, leading to considerable loss and waste of resources. Read More

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Identification of TYR, TYRP1, DCT and LARP7 as related biomarkers and immune infiltration characteristics of vitiligo via comprehensive strategies.

Bioengineered 2021 Dec;12(1):2214-2227

Department of Dermatology, the First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China.

This study aims to explore biomarkers associated with vitiligo and analyze the pathological role of immune cell infiltration in the disease. We used the robust rank aggregation (RRA) method to integrate three vitiligo data sets downloaded from gene expression omnibus database, identify the differentially expressed genes (DEGs) and analyze the functional correlation. Then, the comprehensive strategy of combined weighted gene coexpression network analysis (WGCNA) and logical regression of the selection operator (LASSO), support vector machine recursive feature elimination (SVM-RFE), and random forest (RF) machine learning algorithm are employed to screen and biomarkers associated with vitiligo. Read More

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December 2021

[Regulatory effects of LIM kinase 1 on the proliferation and metastasis of hepatocellular carcinoma cells].

Zhonghua Gan Zang Bing Za Zhi 2021 May;29(5):427-432

Department of Gastroenterology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.

To study LIM kinase 1 (LIMK1) expressional condition, and its regulatory effects on the proliferation and metastasis of hepatocellular carcinoma cells and tissues. The online database starBase v3.0 and GEPIA were used to analyze the LIMK1 expression in hepatocellular carcinoma cells and normal liver tissues, and then the relevant survival analysis was performed. Read More

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