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12篇 您的检索式:作者名="Ruoshi Xu"
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1Saliva: potential diagnostic value and transmission of 2019-nCoV显示文摘2019-n Co V epidemic was firstly reported at late December of 2019 and has caused a global outbreak of COVID-19 now.Saliva,a biofluid largely generated from salivary glands in oral cavity,has been reported 2019-n Co V nucleic acid positive.Besides lungs,salivary glands and tongue are possibly another hosts of 2019-n Co V due to expression of ACE2.Close contact or short-range transmission of infectious saliva droplets is a primary mode for 2019-n Co V to disseminate as claimed by WHO,while long-distance saliva aerosol transmission is highly environment dependent within indoor space with aerosol-generating procedures such as dental practice.So far,no direct evidence has been found that 2019-n Co V is vital in air flow for long time.Therefore,to prevent formation of infectious saliva droplets,to thoroughly disinfect indoor air and to block acquisition of saliva droplets could slow down2019-n Co V dissemination.This review summarizes diagnostic value of saliva for 2019-n Co V,possibly direct invasion into oral tissues,and close contact transmission of 2019-n Co V by saliva droplets,expecting to contribute to 2019-n Co V epidemic control.Ruoshi Xu Bomiao Cui Xiaobo Duan Ping Zhang Xuedong Zhou Quan Yuan 2020International Journal of Oral Science2020,12,2:9
2Gα_s signaling controls intramembranous ossification during cranial bone development by regulating both Hedgehog and Wnt/β-catenin signaling显示文摘How osteoblast cells are induced is a central question for understanding skeletal formation. Abnormal osteoblast differentiation leads to a broad range of devastating craniofacial diseases. Here we have investigated intramembranous ossification during cranial bone development in mouse models of skeletal genetic diseases that exhibit craniofacial bone defects. The GNAS gene encodes Gαs that transduces GPCR signaling. GNAS activation or loss-of-function mutations in humans cause fibrous dysplasia(FD) or progressive osseous heteroplasia(POH) that shows craniofacial hyperostosis or craniosynostosis, respectively. We find here that, while Hh ligand-dependent Hh signaling is essential for endochondral ossification, it is dispensable for intramembranous ossification, where Gαsregulates Hh signaling in a ligand-independent manner. We further show that Gαscontrols intramembranous ossification by regulating both Hh and Wnt/β-catenin signaling. In addition, Gαsactivation in the developing cranial bone leads to reduced ossification but increased cartilage presence due to reduced cartilage dissolution, not cell fate switch. Small molecule inhibitors of Hh and Wnt signaling can effectively ameliorate cranial bone phenotypes in mice caused by loss or gain of Gnas function mutations, respectively. Our work shows that studies of genetic diseases provide invaluable insights in both pathological bone defects and normal bone development, understanding both leads to better diagnosis and therapeutic treatment of bone diseases.Ruoshi Xu Sanjoy Kumar Khan Taifeng Zhou Bo Gao Yaxing Zhou Xuedong Zhou Yingzi Yang 2018Bone Research2018,6,4:7
3AFF4 regulates osteogenic differentiation of human dental follicle cells显示文摘As a member of the AFF(AF4/FMR2)family,AFF4 is a transcription elongation factor that is a component of the super elongation complex.AFF4 serves as a scaffolding protein that connects transcription factors and promotes gene transcription through elongation and chromatin remodelling.Here,we investigated the effect of AFF4 on human dental follicle cells(DFCs)in osteogenic differentiation.In this study,we found that small interfering RNA-mediated depletion of AFF4 resulted in decreased alkaline phosphatase(ALP)activity and impaired mineralization.In addition,the expression of osteogenic-related genes(DLX5,SP7,RUNX2 and BGLAP)was significantly downregulated.In contrast,lentivirus-mediated overexpression of AFF4 significantly enhanced the osteogenic potential of human DFCs.Mechanistically,we found that both the mRNA and protein levels of ALKBH1,a critical regulator of epigenetics,changed in accordance with AFF4 expression levels.Overexpression of ALKBH1 in AFF4-depleted DFCs partially rescued the impairment of osteogenic differentiation.Our data indicated that AFF4 promoted the osteogenic differentiation of DFCs by upregulating the transcription of ALKBH1.Qingyue Xiao Yuning Zhang Xingying Qi Yaqian Chen Rui Sheng Ruoshi Xu Quan Yuan Chenchen Zhou 2020International Journal of Oral Science2020,12,4:4
4Klotho in Osx+-mesenchymal progenitors exerts pro-osteogenic and anti-inflammatory effects during mandibular alveolar bone formation and repair显示文摘Maxillofacial bone defects are commonly seen in clinical practice.A clearer understanding of the regulatory network directing maxillofacial bone formation will promote the development of novel therapeutic approaches for bone regeneration.The fibroblast growth factor(FGF)signalling pathway is critical for the development of maxillofacial bone.Klotho,a type I transmembrane protein,is an important components of FGF receptor complexes.Recent studies have reported the presence of Klotho expression in bone.However,the role of Klotho in cranioskeletal development and repair remains unknown.Here,we use a genetic strategy to report that deletion of Klotho in Osx-positive mesenchymal progenitors leads to a significant reduction in osteogenesis under physiological and pathological conditions.Klotho-deficient mensenchymal progenitors also suppress osteoclastogenesis in vitro and in vivo.Under conditions of inflammation and trauma-induced bone loss,we find that Klotho exerts an inhibitory function on inflammation-induced TNFR signaling by attenuating Rankl expression.More importantly,we show for the first time that Klotho is present in human alveolar bone,with a distinct expression pattern under both normal and pathological conditions.In summary,our results identify the mechanism whereby Klotho expressed in Osx+-mensenchymal progenitors controls osteoblast differentiation and osteoclastogenesis during mandibular alveolar bone formation and repair.Klotho-mediated signaling is an important component of alveolar bone remodeling and regeneration.It may also be a target for future therapeutics.Yi Fan Chen Cui Clifford JRosen Tadatoshi Sato Ruoshi Xu Peiran Li Xi Wei Ruiye Bi Quan Yuan Chenchen Zhou 2022Signal Transduction and Targeted Therapy2022,7,6:3
5Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda显示文摘The fall armyworm(FAW),Spodoptera frugiperda,is a destructive pest native to America and has recently become an invasive insect pest in China.Because of its rapid spread and great risks in China,understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management strategies.Here,we assembled a chromosome-level genome of a male FAW(SFynMstLFR)and compared re-sequencing results of the populations from America,Africa,and China.Strain identification of 163 individuals collected from America,Africa and China showed that both C and R strains were found in the American pop-ulations,while only C strain was found in the Chinese and African populations.Moreover,population geno-mics analysis showed that populations from Africa and China have close relationship with significantly genetic differentiation from American populations.Taken toge-ther,FAWs invaded into China were most likely origi-nated from Africa.Comparative genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW,of which 283 genes are specific to FAW.Treatments of Chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles,and several detoxification genes such as AOX,UGT and GST spe-cially responded to the pesticides.These findings will be useful in developing effective strategies for manage-ment of FAW in China and other invaded areas.Furong Gui Tianming Lan Yue Zhao Wei Guo Yang Dong Dongming Fang Huan Liu Haimeng Li Hongli Wang Ruoshi Hao Xiaofang Cheng Yahong Li Pengcheng Yang Sunil Kumar Sahu Yaping Chen Le Cheng Shuqi He Ping Liu Guangyi Fan Haorong Lu Guohai Hu Wei Dong Bin Chen Yuan Jiang Yongwei Zhang Hanhong Xu Fei Lin Bernard Slippers Alisa Postma Matthew Jackson Birhan Addisie Abate Kassahun Tesfaye Aschalew Lemma Demie Meseret Destaw Bayeleygne Dawit Tesfaye Degefu Feng Chen Paul K.Kuria Zachary M.Kinyua Tong-Xian Liu Huanming Yang Fangneng Huang Xin Liu Jun Sheng Le Kang 2022Protein & Cell2022,13,7:2
6METTL3-mediated m^(6)A RNA methylation regulates dorsal lingual epithelium homeostasis显示文摘The dorsal lingual epithelium,which is composed of taste buds and keratinocytes differentiated from K14^(+)basal cells,discriminates taste compounds and maintains the epithelial barrier.N6-methyladenosine(m^(6)A)is the most abundant mRNA modification in eukaryotic cells.How METTL3-mediated m^(6)A modification regulates K14^(+)basal cell fate during dorsal lingual epithelium formation and regeneration remains unclear.Here we show knockout of Mettl3 in K14^(+)cells reduced the taste buds and enhanced keratinocytes.Deletion of Mettl3 led to increased basal cell proliferation and decreased cell division in taste buds.Conditional Mettl3 knock-in mice showed little impact on taste buds or keratinization,but displayed increased proliferation of cells around taste buds in a protective manner during post-irradiation recovery.Mechanically,we revealed that the most frequent m^(6)A modifications were enriched in Hippo and Wnt signaling,and specific peaks were observed near the stop codons of Lats1 and FZD7.Our study elucidates that METTL3 is essential for taste bud formation and could promote the quantity recovery of taste bud after radiation.Qiuchan Xiong Caojie Liu Xin Zheng Xinyi Zhou Kexin Lei Xiaohan Zhang Qian Wang Weimin Lin Ruizhan Tong Ruoshi Xu Quan Yuan 2022International Journal of Oral Science2022,14,3:2
7Insights into skeletal stem cells显示文摘The tissue-resident skeletal stem cells(SSCs),which are self-renewal and multipotent,continuously provide cells(including chondrocytes,bone cells,marrow adipocytes,and stromal cells)for the development and homeostasis of the skeletal system.In recent decade,utilizing fluorescence-activated cell sorting,lineage tracing,and single-cell sequencing,studies have identified various types of SSCs,plotted the lineage commitment trajectory,and partially revealed their properties under physiological and pathological conditions.In this review,we retrospect to SSCs identification and functional studies.We discuss the principles and approaches to identify bona fide SSCs,highlighting pioneering findings that plot the lineage atlas of SSCs.The roles of SSCs and progenitors in long bone,craniofacial tissues,and periosteum are systematically discussed.We further focus on disputes and challenges in SSC research.Qiwen Li Ruoshi Xu Kexin Lei Quan Yuan 2022Bone Research2022,10,4:2
8Disturbed bone remodelling activity varies in different stages of experimental, gradually progressive apical periodontitis in rats显示文摘Bone remodelling keeps going through the lifespan of human by bone formation and bone resorption.In the craniofacial region,mandibles act as the main force for biting and chewing,and also become susceptible to a common bone-loss disease,namely,apical periodontitis,once infected dental pulp is not treated timely,during which bone resorption occurs from the apical foramen to the apical bone area.Although conventional root canal treatment(RCT)can remove the most of the infection,chronical apical periodontitis due to incomplete removal of dental pulp and subsequent microleakage will become refractory and more challenging,and this process has scarcely been specifically studied as a bone remodelling issue in rat models.Therefore,to study chronical and refractory apical periodontitis owing to incomplete cleaning of infected dental pulp and microleackage in vivo,we establish a modified rat model of gradually progressive apical periodontitis by sealing residual necrotic dental pulp and introducing limited saliva,which simulates gradually progressive apical periodontitis,as observed in the clinical treatment of chronical and refractory apical periodontitis.We show that bone-loss is inevitable and progressive in this case of apical periodontitis,which confirms again that complete and sound root canal treatment is crucial to halt the progression of chronical and refractory apical periodontitis and promote bone formation.Interestingly,bone remodelling was enhanced at the initial stage of apical periodontitis in this model while reduced with a high osteoblast number afterwards,as shown by the time course study of the modified model.Suggesting that the pathological apical microenvironment reserve its hard tissue formation ability to some degree but in a disturbed manner.Hopefully,our findings can provide insights for future bone regenerative treatment for apical periodontitisassociated bone loss.Ruoshi Xu Daimo Guo Xuedong Zhou Jianxun Sun Yachuan Zhou Yi Fan Xin Zhou Mian Wan Wei Du Liwei Zheng 2019International Journal of Oral Science2019,11,4:1
9Application of nano-patterned InGaN fabricated by selfassembled Ni nano-masks in green InGaN/GaN multiple quantum wells显示文摘The nano-patterned InGaN film was used in green InGaN/GaN multiple quantum wells(MQWs)structure,to relieve the unpleasantly existing mismatch between high indium content InGaN and GaN,as well as to enhance the light output.The different self-assembled nano-masks were formed on InGaN by annealing thin Ni layers of different thicknesses.Whereafter,the InGaN films were etched into nano-patterned films.Compared with the green MQWs structure grown on untreated InGaN film,which on nano-patterned InGaN had better luminous performance.Among them the MQWs performed best when 3 nm thick Ni film was used as mask,because that optimally balanced the effects of nano-patterned InGaN on the crystal quality and the light output.Ruoshi Peng Shengrui Xu Xiaomeng Fan Hongchang Tao Huake Su Yuan Gao Jincheng Zhang Yue Hao 2023Journal of Semiconductors2023,44,4:0
10Rumor recognition behavior of social media users in emergencies显示文摘Social media rumors not only affect the health of online social networks,but also reduce the quality of information accessed by its users.In the case of emergencies,the rapid spread of rumors often triggers mass anxiety and panic.This study integrates the planned behavior(TPB)and deterrence(TD)theories to study the factors affecting the rumor recognition behavior of social media users.The structural equation model(SEM)method is used to test the proposed model.Further,the interaction between various factors is analyzed to evaluate their impact on the rumor recognition behavior exhibited by social media users in emergencies.The results demonstrate that certainty and severity have significant positive effects on subjective norms.In addition,subjective norms,attitude,and perceived behavioral control all affect the rumor recognition behavior of social media users,and involvement negatively moderates the relationship between the subjective norms and attitude.Finally,insights into the formulation of rumor control strategies during emergencies are presented based on the empirical analysis.Xuejun Ding Xiaxia Zhang Ruoshi Fan Qiaochu Xu Kyle Hunt Jun Zhuang 2022Journal of Management Science and Engineering2022,7,1:0
11Enhancement of optical characteristic of InGaN/GaN multiple quantum-well structures by self-growing air voids显示文摘InGaN/GaN multiple quantum-well(MQW) structures with a wavelength range of green were successfully grown on a c-plane GaN template with SiO_2 stripe patterns along the [11-20] and [1-100] directions as a mask. The surface morphologies of both samples were investigated using scanning electron microscopy and demonstrated anisotropic growth characteristics of GaN. The optical characteristics were investigated using Raman spectra and photoluminescence(PL). The InGaN/GaN MQW structure grown on the GaN template with SiO_2 stripes along the [1-100] orientation exhibited less stress and higher PL intensity.Transmission electron microscopy results indicated that portions of MQWs were grown on an inclined semipolar plane, and air voids occurred only when the direction of the mask stripe was along the [1-100] orientation. The enhancement of the optical characteristic was due to the air-void structure and inclined semipolar quantum-well sidewalls.DU JinJuan XU ShengRui PENG RuoShi FAN XiaoMeng ZHAO Ying TAO HongChang SU HuaKe NIU MuTong ZHANG JinCheng HAO Yue 2021Science China(Technological Sciences)2021,64,7:0
12METTL5 regulates cranial suture fusion via Wnt signaling显示文摘METTL5 is a methyltransferase that mediates eukaryotic 18S ribosomal RNA m^(6)A modification,and its mutations lead to intellectual disability,microcephaly,and facial dysmorphism in patients.However,the role of METTL5 in craniofacial development remains poorly understood.This study demonstrates that Mettl5 knockout mice exhibit poor ossification,widened cranial sutures,and a cleidocranial dysplasia-like phenotype.Deletion of Mettl5 leads to increased proliferation and decreased osteogenic differentiation of suture mesenchymal stem cells.Mechanistically,we find that Wnt signaling is significantly downregulated after Mettl5 knockout.Overall,we reveal an essential role of METTL5 in craniofacial development and osteogenic differentiation of suture mesenchymal stem cells,making METTL5 a potential diagnostic and therapeutic target for craniofacial developmental diseases.Kexin Lei Ruoshi Xu Qian Wang Qiuchan Xiong Xinyi Zhou Qiwen Li Dutmanee Seriwatanachai Shuibin Lin Chenchen Zhou Quan Yuan 2023Fundamental Research2023,3,3:0
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