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Genetically modified pigs with CD163 point mutation are resistant to HP-PRRSV infection

Zoological Research 2024年第4期45卷 833-844页

作者： Ying Liu Lin Yang Hong-Yong Xiang Ming Niu Jia-Cheng Deng Xue-Yuan Li Wen-Jie Hao Hong-Sheng Ou-Yang Tong-Yu Liu Xiao-Chun Tang Da-Xin Pang Hong-Ming Yuan State Key Laboratory for diagnosis and treatment of Severe Zoonotic Infectious Diseases Animal Genome Editing Technology Innovation CenterCollege of Animal SciencesJilin UniversityChangchunJilin 130062China Chifeng Best Genetics Technology Co. Ltd.ChifengNei Mongol 024000China Chongqing Jitang Biotechnology Research Institute Co. Ltd.Chongqing 400015China

Porcine reproductive and respiratory syndrome(PRRS)is a globally prevalent contagious disease caused by the positive-strand RNA PRRS virus(PRRSV),resulting in substantial economic losses in the swine *** the CD163 SRCR5 domain,either through deletion or substitution,can eff1ectively confer resistance to PRRSV infection in ***,large fragment modifications in pigs inevitably raise concerns about potential adverse effects on growth *** the impact of genetic modifications on normal physiological functions is a promising direction for developing PRRSV-resistant *** the current study,we identified a specific functional amino acid in CD163 that influences PRRSV *** infection experiments conducted on Marc145 and PK-15CD163 cells illustrated that the mE535G or corresponding pE529G mutations markedly inhibited highly pathogenic PRRSV(HP-PRRSV)proliferation by preventing viral binding and ***,individual viral challenge tests revealed that pigs with the E529G mutation had viral loads two orders of magnitude lower than wild-type(WT)pigs,confirming effective resistance to *** of the physiological indicators and scavenger function of CD163 verified no significant differences between the WT and E529G *** findings suggest that E529G pigs can be used for breeding PRRSV-resistant pigs,providing novel insights into controlling future PRRSV outbreaks.

关键词： PRRSV CD163 Point mutation E529G Pigs

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High-density lipoprotein regulates angiogenesis by affecting autophagy via miRNA-181a-5p

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Science China(Life Sciences) 2024年第2期67卷 286-300页

作者： Bi-Ang Kang Hua-Ming Li Ya-Ting Chen Meng-Jie Deng Yan Li Yue-Ming Peng Jian-Jun Gao Zhi-Wei Mo Jia-Guo Zhou Zhi-Jun Ou Jing-Song Ou Division of Cardiac Surgery Cardiovascular Diseases InstituteThe First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China National-Guangdong Joint Engineering Laboratory for diagnosis and treatment of Vascular Diseases Guangzhou 510080China NHC key Laboratory of Assisted Circulation(Sun Yat-sen University) Guangzhou 510080China Guangdong Provincial Engineering and Technology center for diagnosis and treatment of Vascular Diseases Guangzhou 510080China Division of Vascular Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China Department of Pharmacology Cardiac and Cerebral Vascular Research CenterZhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510080China Division of Hypertension and Vascular Diseases Department of CardiologyCardiovascular Diseases InstituteThe First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China Guangdong Provincial Key Laboratory of Brain Function and Disease Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510080China

We previously demonstrated that normal high-density lipoprotein(nHDL)can promote angiogenesis,whereas HDL from patients with coronary artery disease(d HDL)is dysfunctional and impairs *** plays a critical role in angiogenesis,and HDL regulates ***,it is unclear whether n HDL and d HDL regulate angiogenesis by affecting *** cells(ECs)were treated with n HDL and d HDL with or without an autophagy ***,endothelial nitric oxide synthase(e NOS)expression,miRNA expression,nitric oxide(NO)production,superoxide anion(O2^(·-))generation,EC migration,and tube formation were evaluated.n HDL suppressed the expression of miR-181a-5p,which promotes autophagy and the expression of e NOS,resulting in NO production and the inhibition of O2^(·-)generation,and ultimately increasing in EC migration and tube formation.d HDL showed opposite effects compared to n HDL and ultimately inhibited EC migration and tube *** found that autophagy-related protein 5(ATG5)was a direct target of ***5 silencing or miR-181a-5p mimic inhibited n HDL-induced autophagy,e NOS expression,NO production,EC migration,tube formation,and enhanced O2^(·-)generation,whereas overexpression of ATG5 or miR-181a-5p inhibitor reversed the above effects of d ***5 expression and angiogenesis were decreased in the ischemic lower limbs of hypercholesterolemic low-density lipoprotein receptor null(LDLr^(-/-))mice when compared to C57BL/6 ***5 overexpression improved angiogenesis in ischemic hypercholesterolemic LDLr^(-/-)*** together,nHDL was able to stimulate autophagy by suppressing miR-181a-5p,subsequently increasing e NOS expression,which generated NO and promoted *** contrast,d HDL inhibited angiogenesis,at least partially,by increasing miR-181a-5p expression,which decreased autophagy and e NOS expression,resulting in a decrease in NO production and an increase in O2^(·-)*** findings reveal a nov

关键词： high-density lipoprotein angiogenesis autophagy ATG5 miRNA endothelial nitric oxide synthase

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Double contrast-enhanced ultrasonography improves diagnostic accuracy of T staging compared with multi-detector computed tomography in gastric cancer patients

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World Journal of Gastroenterology 2024年第23期30卷 3005-3015页

作者： Yan-Fen Xu Hui-Yun Ma Gui-Ling Huang Yu-Ting Zhang Xue-Yan Wang Ming-Jie Wei Xiao-Qing Pei Department of Ultrasound State Key Laboratory of Oncology in South ChinaGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina Department of Radiology State Key Laboratory of Oncology in South ChinaGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina Department of Medical Ultrasound State Key Laboratory of Oncology in South ChinaGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina

BACKGROUND Gastric cancer(GC)is the most common malignant tumor and ranks third for cancer-related deaths among the *** disease poses a serious public health problem in China,ranking fifth for incidence and third for *** of the invasive depth of the tumor is vital to treatment *** To evaluate the diagnostic performance of double contrast-enhanced ultrasonography(DCEUS)for preoperative T staging in patients with GC by comparing with multi-detector computed tomography(MDCT).METHODS This single prospective study enrolled patients with GC confirmed by preoperative gastroscopy from July 2021 to March *** underwent DCEUS,including ultrasonography(US)and intravenous contrast-enhanced ultrasonography(CEUS),and MDCT examinations for the assessment of preoperative T *** of GC were identified on DCEUS and criteria developed to evaluate T staging according to the 8th edition of AJCC cancer staging *** diagnostic performance of DCEUS was evaluated by comparing it with that of MDCT and surgical-pathological findings were considered as the gold *** A total of 229 patients with GC(80 T1,33 T2,59 T3 and 57 T4)were *** accuracies were 86.9%for DCEUS and 61.1%for MDCT(Ptreatment decision-making.

关键词： Double contrast-enhanced ultrasonography Multi-detector computed tomography Gastric cancer T staging

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treatment strategy for erythropoietic protoporphyria accompanied by severe abdominal pain and liver injury

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Portal Hypertension & Cirrhosis 2024年第1期3卷 36-38页

作者： Xiaoxin Wu Xiumei Zhou Shuai Zhao Keting He Wenxin Zhoudi Shangci Chen Xiaowei Xu State Key Laboratory for diagnosis and treatment of Infectious Diseases National Clinical Research Centre for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina Department of Infectious Diseases People's Hospital of Pujiang CountyJinhuaZhejiangChina

To the Editor,Erythropoietic protoporphyria(EPP)is a genetic disease caused by a lack of the enzyme ferrochelatase(FECH)in the heme biosynthesis pathway due to genetic *** deficiency is caused by a deleterious FECH variant in transposition to the frequently occurring hypomorphic allele or by the presence of biallelic pathogenic variants.1 EPP could lead to abnormal production and excretion of protoporphyrin IX,2 causing clinical manifestations such as skin damage and liver injury.3–5.

关键词： liver damage clinical

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Development and Evaluation of a Promising Biomarker for diagnosis of Latent and Active Tuberculosis Infection

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Infectious Diseases & Immunity 2024年第1期4卷 10-24页

作者： Cong Peng Fan Jiang Yinping Liu Yong Xue Peng Cheng Jie Wang Liang Wang Wenping Gong Hebei North University Zhangjiakou 075000Hebei ProvinceChina Beijing Key Laboratory of New Techniques of Tuberculosis diagnosis and treatment Senior Department of TuberculosisEighth Medical Center of PLA General HospitalBeijing 100091China Department of Geriatrics Eighth Medical Center of PLA General HospitalBeijing 100091China Section of Health No.94804 Unit of the Chinese People's Liberation ArmyShanghai 200434China

Background:Diagnosing latent tuberculosis(TB)infection(LTBI)and active TB(ATB)is crucial for preventing disease progression and ***,current diagnostic tests have limitations in terms of accuracy and sensitivity,making it challenging to diagnose these different infection ***,this study intends to develop a promising biomarker for LTBI and ATB diagnosis to overcome the limitations of the current diagnostic ***:We developed a novelmultiepitope-based diagnostic biomarker(MEBDB)fromLTBI region of differentiation antigens using bioinformatics and *** responses induced byMEBDM were detected using enzyme-linked immunosorbent spot and cytometric bead *** study was conducted from April 2022 to December 2022 in the SeniorDepartment of Tuberculosis at the 8thMedical center of PLA General Hospital,*** samples were collected from participants with ATB,individuals with LTBI,and healthy controls(HCs).The diagnostic efficacy of MEBDB was evaluated using receiver operating characteristic ***:A novel MEBDB,designated as CP19128P,was ***19128P comprises 19 helper T lymphocyte epitopes,12 cytotoxic T lymphocyte epitopes,and 8 B-cell *** silico simulations demonstrated that CP19128P possesses strong affinity for Toll-like receptors and elicits robust innate and adaptive immune ***19128P generated significantly higher levels of tumor necrosis factor(TNF-α),interleukin 4(IL-4),and IL-10 in ATB patients(n=7)and LTBI(n=8)individuals compared with HCs(n=62)(P<0.001).Moreover,CP19128P-induced specific cytokines could be used to discriminate LTBI and ATB from healthy subjects with high sensitivity and *** IL-2 with IL-4 or TNF-α could differentiate LTBI from HCs(the area under the receiver operating characteristic curve[AUC],0.976[95% confidence interval[CI],0.934-1.000]or 0.986[0.956-1.000]),whereas combining IL-4 with IL-17A or TNF-α could differentiate ATB from

关键词： Tuberculosis Latent tuberculosis infection Active tuberculosis Multiepitope-based diagnostic biomarker Bioinformatics:Immunoinformatics

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Aggregation-induced T/Tcontrast enhancement for magnetic resonance imaging-guided intraoperative surgery

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Science China Chemistry 2024年

作者： Wenbo Sun Bin Yu Dianshuai Huang Chunhuan Jiang Wei Wang Jianhua Liu Zonghua Wang Lehui Lu College of Chemistry and Chemical Engineering Shandong Sino-Japanese Center for Collaborative Research of Carbon NanomaterialsQingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment Qingdao University Department of Radiology Second Hospital of Jilin University State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Magnetic resonance imaging(MRI) plays an important role in precision medicine that is hampered by the lack of contrast agents with high efficiency and the ability to translate diagnostic accuracy into therapeutic intervention. Herein, we demonstrate a DNA-based MRI probe that overcomes previous single-mode enhancement and provides a mechanism of action for aggregationinduced dual-modal MRI signal enhancement. A facile method is developed to produce aggregated T1/T2dual-modal NaGdF4:Dy@PDA-DNA(PDA = polydopamine) MRI probes. When aggregated, this probe can further amplify MRI signal intensity and exhibit improved geometrical and positional stability in vivo. The performance of the NaGdF4:Dy@PDA-DNA MRI probe toward MRI-guided preoperative planning and visualization-guided surgery is verified using an orthotopic tumor-bearing mouse model. The result shows that the rapid metabolism of the degraded probe leads to the mitigation of long-term toxic ***, the developed high-performance MRI probe is of great significance for enhancing MRI diagnostic accuracy into precision medical therapeutic interventions.

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特异性清除衰老细胞的双药纳米递送系统用于治疗肾衰竭

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Science China Materials 2024年第8期67卷 2486-2495页

作者：金世奇李文黄千笑曾旋张先正 Key Laboratory of Biomedical Polymers of Ministry of Education&Department of Chemistry Wuhan UniversityWuhan 430072China Cancer Precision diagnosis and treatment and Translational Medicine Hubei Engineering Research center Zhongnan Hospital of Wuhan UniversityWuhan 430071China

清除衰老细胞是延缓衰老或治疗衰老相关疾病的一种有前途的方法.目前,达沙替尼和槲皮素的组合是研究最为广泛的衰老细胞裂解剂.然而,这两种药物的药代动力学和组织分布不同,迫切需要一种靶向递送策略使其能够同步到达组织或器官.本文设... 详细信息

清除衰老细胞是延缓衰老或治疗衰老相关疾病的一种有前途的方法.目前,达沙替尼和槲皮素的组合是研究最为广泛的衰老细胞裂解剂.然而,这两种药物的药代动力学和组织分布不同,迫切需要一种靶向递送策略使其能够同步到达组织或器官.本文设计了一种双药纳米递送系统(L-DQ),以达沙替尼和槲皮素纳米粒子(DQ)为核心,通过将纳米粒子与靶向蛋白相结合,使其具有靶向特定器官的能力.将DQ与溶菌酶结合得到能够靶向肾脏并清除肾脏衰老细胞的L-DQ.L-DQ能够特异性清除衰老细胞而不损害非衰老细胞,有效降低了受损肾脏的衰老细胞比例,促进了肾功能的恢复.这种双药纳米递送系统有助于靶向递送衰老细胞裂解剂至特定器官,为防治衰老相关疾病提供了一种潜在的策略.

关键词：达沙替尼递送系统裂解剂衰老细胞肾衰竭药代动力学肾功能槲皮素

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Challenges and opportunities in rare cancer research in China

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Science China(Life Sciences) 2024年第2期67卷 274-285页

作者： Jianxin Xue Qunyan Lyu Division of Thoracic Tumor Multimodality treatment Cancer CenterWest China HospitalSichuan UniversityChengdu 610041China National Natural Science Foundation of China Beijing 100085China

Cancer is one of the major public health challenges in *** cancers collectively account for a considerable proportion of all *** lack of awareness of rare cancers among healthcare professionals and the general public,the typically complex and delayed diagnosis,and limited access to clinical trials are key *** years have witnessed an increase in funding for research related to rare cancers in *** this review,we provide a comprehensive overview of rare cancers and summarize the status of research on rare cancers in China and overseas,including the trends of funding and *** also highlight the challenges and perspectives regarding rare cancers in China.

关键词： rare cancers basic research clinical research preclinical model funding scheme

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Granulomatosis with polyangiitis presented as multiple cutaneous abscesses after hysterectomy

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Chinese Medical Journal 2024年第6期137卷 755-756页

作者： Xiaoting Song Mengrui Li Yinggai Song Ping Tu Hang Li Yang Wang Rong Xu Min Chen Xiaojuan Yu Suxia Wang Fude Zhou Minghui Zhao Ruoyu Li Xiaoyu Jia Xiaowen Wang Department of Dermatology and Venereology Peking University First HospitalBeijing 100034China Beijing Key Laboratory of Molecular diagnosis on Dermatoses Beijing 100034China National Clinical Research center for Skin and Immune Diseases Beijing 100034China Renal Division Department of MedicinePeking University First HospitalBeijing 100034China Institute of Nephrology Peking UniversityBeijing 100034China Key Laboratory of Renal Disease Ministry of Health of ChinaBeijing 100034China Research Units of diagnosis and treatment of Immune-mediated Kidney Diseases Chinese Academy of Medical SciencesBeijing 100034China

To the Editor:A 62-year-old woman presented to the dermatology department with a 5-month history of multiple painless cutaneous abscesses and ulcers[Figure 1A],occurring 1 month after a transvaginal hysterectomy due to uterine *** general condition was good before and after the surgery,with no abnormal physical signs apart from *** reported no fever,night sweat,cough,or abdominal pain,but 10 kg *** has no history of diabetes,autoimmune diseases,or chronic infectious *** was no similar illness in her family.

关键词： hysterectomy pain surgery

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Risk Factors of Enternal Nutrition Intolerance in Septic Patients:A Case-control Study

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Current Medical Science 2024年第2期44卷 328-332页

作者： Li-zhu WANG Yan XIANG Qian LI Yi-rong ZHU Jue FANG Xiao-dan LU Zhao-cai ZHANG Department of Nursing The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Critical Care Medicine The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Key Laboratory of the diagnosis and treatment for Severe Trauma and Burn of Zhejiang Province Hangzhou 310009China Zhejiang Province Clinical Research center for Emergency and Critical Care Medicine Hangzhou 310009China

Objective:This study aimed to investigate the incidence of enteral nutrition intolerance(ENI)in patients with sepsis and explore potential risk ***:A case-control study was conducted in patients with sepsis who were receiving enteral nutrition(EN)at a tertiary hospital in *** included patients were divided into the ENI group and the non-ENI *** and multivariate analyses were performed to identify the risk factors for ***:A total of 859 patients were included in the *** them,288(33.53%)patients experienced symptoms of ENI,including diarrhea,vomiting,bloating,and gastric *** regression analysis revealed that the Acute Physiology and Chronic Health Evaluation H(APACHE H)score,thoracocentesis,and usage of cardiotonic drugs(namely,inotropes)were independent predictors of the ***:The incidence of ENI is relatively high in patients with sepsis,especially in those who have higher APACHE H scores,have undergone thoracocentesis,and have received inotropes.

关键词： sepsis enteral nutrition intolerance influencing factor

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