Genetically- and environmentally-dependent processes drive interspecific and intraspecific divergence in the Chinese relict endemic genus .

China is a hotspot of relict plant species that were once widespread throughout the Northern Hemisphere. Recent research has demonstrated that the occurrence of long-term stable refugia in the mountainous regions of central and south-western China allowed their persistence through the late Neogene climate fluctuations. One of these relict lineages is , an oligotypic tree genus with a fossil record extending to the Paleocene.

Isolation of highly copper-resistant bacteria from deep-sea hydrothermal fields and description of a novel species sp. nov.

Introduction: Hydrothermal vents, rich in heavy metals, provided a unique niche for heavy metal resistant microbes. However, knowledge about copper resistant microbes in deep sea hydrothermal vents is still limited.

Methods: The copper-resistant bacteria were isolated from deep-sea hydrothermal vent samples and conducted thorough physical, phylogenetic, and genomic analyses to elucidate their copper resistance capability and related genes.

Hypoxia-related signature to risk stratify patients for the benefit of immune checkpoint inhibitors therapy in head and neck squamous cell carcinoma: An experimental study.

Background: Increasing evidence has shown that hypoxia is a biomarker of tumor proliferation and metastasis. This research aimed to identify a hypoxia-associated gene prognostic index (HAGPI) in head and neck squamous cell carcinoma (HNSCC) and based on HAGPI-defined subgroups to predict prognosis and response to immune checkpoint inhibitors therapy.

Methods: RNA-sequencing transcriptomic data for patients with HNSCC were downloaded from The Cancer Genome Atlas (TCGA).

Discrimination of polysorbate 20 by high-performance liquid chromatography-charged aerosol detection and characterization for components by expanding compound database and library.

Analyzing polysorbate 20 (PS20) composition and the impact of each component on stability and safety is crucial due to formulation variations and individual tolerance. The similar structures and polarities of PS20 components make accurate separation, identification, and quantification challenging. In this work, a high-resolution quantitative method was developed using single-dimensional high-performance liquid chromatography (HPLC) with charged aerosol detection (CAD) to separate 18 key components with multiple esters.

Comparative analysis of the organelle genomes of Aconitum carmichaelii revealed structural and sequence differences and phylogenetic relationships.

In this study, we conducted an assembly and analysis of the organelle genomes of Aconitum carmichaelii. Our investigation encompassed the examination of organelle genome structures, gene transfer events, and the environmental selection pressures affecting A. carmichaelii.

Mutual communication between radiosensitive and radioresistant esophageal cancer cells modulates their radiosensitivity.

Radiotherapy is an important treatment modality for patients with esophageal cancer; however, the response to radiation varies among different tumor subpopulations due to tumor heterogeneity. Cancer cells that survive radiotherapy (i.e.

Upregulation of CELSR1 expression promotes ovarian cancer cell proliferation, migration, and invasion.

Cadherin epidermal growth factor and laminin-G seven-pass G-type receptor 1 (CELSR1) is a planar cell polarity protein involved in the transmission of directional cues to align either individual cells within an epithelial sheet or multicellular clusters. CELSR1 has been suggested to play a role in glioma, breast cancer, and chronic lymphocytic leukemia development; however, whether it has a role in the pathogenesis of ovarian cancer remains unknown. The aim of this study was to determine the role of CELSR1 in ovarian cancer and elucidate its underlying molecular mechanisms.

Clinical Value of a Nomogram Model Based on Apparent Diffusion Coefficient Values Within 1 cm of the Tumor Cavity to Predict Postoperative Progression of Glioma.

Objective: To explore the clinical value of constructing a nomogram model based on apparent diffusion coefficient values within 1 cm of the residual tumor cavity to predict the postoperative progression of gliomas.

Methods: Clinical data of patients with glioma who underwent surgery were retrospectively retrieved from the First Hospital of Qinhuangdao. The mean apparent diffusion coefficient (mADC) was measured using a picture archiving and communication system.

Small cytosolic double-stranded DNA represses cyclic GMP-AMP synthase activation and induces autophagy.

The cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway is a major mediator of inflammation following stimulation with >45 bp double-stranded DNA (dsDNA). Herein, we identify a class of ∼20-40 bp small cytosolic dsDNA (scDNA) molecules that compete with long dsDNA (200-1,500 bp herring testis [HT]-DNA) for binding to cGAS, thus repressing HT-DNA-induced cGAS activation. The scDNA promotes cGAS and Beclin-1 interaction, releasing Rubicon, a negative regulator of phosphatidylinositol 3-kinase class III (PI3KC3), from the Beclin-1-PI3KC3 complex.

Comparative transcriptome analyses of three Gentiana species provides signals for the molecular footprints of selection effects and the phylogenetic relationships.

Species in Gentiana section Cruciata are important alpine plants with a center of diversity and speciation in Qinghai-Tibet Plateau (QTP), and some of these species are sympatrically distributed in northeastern QTP. Studies on genome features and natural selection signatures of sympatric species in section Crucata have been impeded by a lack of genomic resources. Here, we showed transcript characterizations and molecular footprints of selection effects on G.

De novo genome assembly of the medicinal plant Gentiana macrophylla provides insights into the genomic evolution and biosynthesis of iridoids.

Gentiana macrophylla is a perennial herb in the Gentianaceae family, whose dried roots are used in traditional Chinese medicine. Here, we assembled a chromosome-level genome of G. macrophylla using a combination of Nanopore, Illumina, and Hi-C scaffolding approaches.

Characterization of the complete chloroplast genome sequence of (Cucurbitaceae).

C. Y. Wu et S.

Tryptophan 2, 3‑dioxygenase promotes proliferation, migration and invasion of ovarian cancer cells.

Tryptophan 2,3‑dioxygenase (TDO2) is a key rate‑limiting enzyme in the kynurenine pathway and promotes tumor growth and escape from immune surveillance in different types of cancer. The present study aimed to investigate whether TDO2 serves a role in the development of ovarian cancer. Reverse transcription‑quantitative PCR and western blotting were used to detect the expression of TDO2 in different cell lines.

[Effect of Pembrolizumab on T Lymphocyte Subsets in Patients with Advanced Non-small Cell Lung Cancer and Its Therapeutic Effect].

Background: The aim of this study is to investigate the changes of peripheral blood lymphocyte subsets before and after treatment with pembrolizumab for non-small cell lung cancer and its clinical significance.

Methods: A total of 32 patients with non-small cell lung cancer who received pembrolizumab treatment in The Affiliated Hospital of Qingdao University and Weifang People's Hospital of Shandong Province from January 2015 to December 2020 were selected as the observation group, and 30 healthy people during the same period were selected as the control group. Before treatment and in cycles 1, 2 and 4 after treatment, fluid cytometry was used to detect changes in the levels of lymphocyte subsets in the peripheral blood of patients.

Assessment of Neuroprotective Effects of Low-Intensity Transcranial Ultrasound Stimulation in a Parkinson's Disease Rat Model by Fractional Anisotropy and Relaxation Time T2 Value.

Low-intensity transcranial ultrasound (LITUS) may have a therapeutic effect on Parkinson's disease (PD) patients to some extent. Fractional anisotropy (FA) and relaxation time T2 that indicate the integrity of fiber tracts and iron concentrations in brain tissue have been used to evaluate the therapeutic effects of LITUS. This study aims to use FA and T2 values to evaluate the therapeutic effects of LITUS in a PD rat model.

Spatial Genetic Structure and Demographic History of the Dominant Forest Oak Hance in Subtropical China.

Oak trees ( L.) are important models for estimating abiotic impacts on the population structure and demography of long life span tree species. In this study, we generated genetic data for 17 nuclear microsatellite loci in 29 natural populations of to estimate the population genetic structure.

Characterization of the complete chloroplast genome of (Adoxaceae).

The whole chloroplast (cp) genome sequence of has been characterized from Illumina pair-end sequencing. The complete cp genome was 158,408 bp in length, containing a large single copy region (LSC) of 86,998 bp and a small single copy region (SSC) of 18,386 bp, which were separated by a pair of inverted repeat (IR) regions of 26,512 bp. The genome contained 130 genes, including 84 protein-coding genes, 37 tRNA genes, eight ribosomal RNA genes (four rRNA species), and a pseudogene.

Laser speckle contrast imaging system using nanosecond pulse laser source.

Significance: Nanosecond-pulsed laser has proven to be used to obtain the velocity of blood using the speckle contrast method. Without the scanning time, it has potential for achieving fast two-dimensional blood flow images in a photoacoustic imaging system with the same pulsed laser.

Aim: Our study aimed to evaluate the qualities of regional cerebral blood flow (rCBF) obtained in a laser speckle contrast imaging (LSCI) system using continuous wave (cw) and nanosecond pulse laser sources.

Characterization of the complete chloroplast genome of (Actinidiaceae).

The whole chloroplast (cp) genome sequence of has been characterized from Illumina pair-end sequencing. The complete cp genome was 156,124 bp in length, containing a large single-copy region (LSC) of 88,006 bp and a small single-copy region (SSC) of 20,332 bp, which were separated by a pair of inverted repeat (IR) regions of 23,893 bp. The genome contained 131 genes, including 84 protein-coding genes, 39 tRNA genes, and 8 ribosomal RNA genes (4 rRNA species).

[Development of Diffuse Reflectance Spectroscopy Detection and Analysis System for Cervical Cancer].

Cervical cancer is a common female malignant tumor. It has been increasing and rejuvenating in recent years. Early screening of cervical cancer is an effective control method to block cancer.

[Development of Blood Flow and Oxygen Monitoring System for Mice Based on Laser Speckle and Spectrum].

simultaneous monitoring of blood flow and changes of concentration of oxyhemoglobin (ΔHbO) in brain is a key important method for the research of cerebrovascular disease. In this study, a new monitoring system, combining laser speckle contrast imaging method and spectral analysis method, was proposed, which could be utilized to measure the cerebral blood flow and ΔHbO on mice during traumatic brain injury. The principle of the present system was studied and the hardware platform of the detection system was built.

Characterization of the complete chloroplast genome of (Pinaceae), an endemic to China.

, an endemic evergreen trees distributed in Qinling Mountains, is listed in China Species Red List as an endangered species. In this study, the complete chloroplast genome (cpDNA) sequence of was determined from Illumina pair-end sequencing data. The cpDNA is 121,329 bp in length, contains a large single copy region (LSC) of 72,843 bp and a small single copy region (SSC) of 46,126 bp, which were separated by a pair of inverted repeat (IR) regions of 1180 bp.