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Cellular & Molecular Immunology 2021年第4期18卷 1005-1015页

作者： Xuezhen Zeng Jingying Zhou Zhewen Xiong Hanyong Sun weiqin Yang Myth T.S.Mok Jing wang Jingqing Li Man Liu wenshu Tang Yu Feng hector kwong-sang w ang Shun-wa Tsang King-Lau Chow Philip Chun Yeung John wong Paul Bo-San Lai Anthony wing-Hung Chan Ka Fai To Stephen Lam Chan Qiang Xia Jing Xue Xiao Chen Jun Yu Sui Peng Joseph Jao-Yiu Sung Ming Kuang Alfred Sze-Lok Cheng School of Biomedical Sciences The Chinese University of Hong KongHong Kong SARChina lnstitute of Precision Medicine The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Department of Liver Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Department of Pharmacy The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Department of Anatomical and Cellular Pathology The Chinese University of Hong KongHong Kong SARChina Department of Liver Surgery Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina Department of Gastroenterology The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Division of Life Science Hong Kong University of Science and TechnologyHong Kong SARChina Department of Surgery The Chinese University of Hong KongHong Kong SARChina State Key Laboratory of Translational Oncology The Chinese University of Hong KongHong Kong SARChina Department of Clinical Oncology The Chinese University of Hong KongHong Kong SARChina State Key Laboratory of Oncogenes and Related Genes Stem Cell Research CenterRen Ji HospitalSchool of MedicineShanghai Cancer InstituteShanghai Jiao Tong UniversityShanghaiChina Department of Medicine and Therapeutics The Chinese University of Hong KongHong Kong SARChina State Key Laboratory of Digestive Disease The Chinese University of Hong KongHong Kong SARChina Clinical Trial Unit The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Cancer Center The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina

The liver is an immunologically tolerant organ and a common metastatic site of multiple cancer *** a role for cancer cell invasion programs has been well characterized,whether and how liver-intrinsic factors drive metastatic spread is incompletely ***,we show that aberrantly activated hepatocyte-intrinsic cell cycle-related kinase(CCRK)signaling in chronic liver diseases is critical for cancer metastasis by reprogramming an immunosuppressive *** an inducible liverspecific transgenic model,we found that CCRK overexpression dramatically increased both B16F10 melanoma and MC38 colorectal cancer(CRC)metastasis to the liver,which was highly infiltrated by polymorphonuclear-myeloid-derived suppressor cells(PMNMDSCs)and lacking natural killer T(NKT)*** of PMN-MDSCs in CCRK transgenic mice restored NKT cell levels and their interferon gamma production and reduced liver metastasis to 2.7% and 0.7%(metastatic tumor weights)in the melanoma and CRC models,***,CCRK activated nuclear factor-kappa B(NF-κB)signaling to increase the PMN-MDSC trafficking chemokine C-X-C motif ligand 1(CXCL1),which was positively correlated with liver-infiltrating PMN-MDSC levels in CCRK transgenic ***,CRC liver metastasis patients exhibited hyperaaivation of hepatic CCRK/NF-κB/CXCL1 signaling,which was associated with accumulation of PMN-MDSCs and paucity of NKT cells compared to healthy liver transplantation *** summary,this study demonstrates that immunosuppressive reprogramming by hepatic CCRK signaling undermines antimetastatic *** findings offer new mechanistic insights and therapeutic targets for liver metastasis intervention.

关键词： Cell cycle related kinase liver metastasis liver immune microenvironment myeloid-derived suppressor cell natural killer T cell

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一种选择敏感培养基对腐败材料检测鼠疫耶尔森氏菌检测的应用效果

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中国人兽共患病学报 2022年第10期38卷 906-909,930页

作者：谢辉刘中凯耿永强冯建萍多杰昂欠金星青海省地方病预防控制所西宁810021 国家卫生健康委员会鼠疫防治研究重点实验室西宁810021

目的研制并筛选适合从腐败材料分离鼠疫菌的选择敏感培养基,对其性能进行评价。方法以自制赫氏消化液为基础,加入刺激鼠疫菌和抑制杂菌生长的生化试剂配制成2种选择敏感培养基,以常见致病菌株、耶尔森氏菌属中与鼠疫菌近源的假结核耶尔... 详细信息

目的研制并筛选适合从腐败材料分离鼠疫菌的选择敏感培养基,对其性能进行评价。方法以自制赫氏消化液为基础,加入刺激鼠疫菌和抑制杂菌生长的生化试剂配制成2种选择敏感培养基,以常见致病菌株、耶尔森氏菌属中与鼠疫菌近源的假结核耶尔森菌、小肠结肠炎耶尔森菌评估2种培养基的敏感性和特异性;应用以上培养基分离野外腐败动物材料的鼠疫菌,评价几种选择培养基的应用效果。结果1号培养基(4%十二烷基硫酸钠选择培养基)对鼠疫菌检测的特异性高、敏感性强,培养24 h鼠疫菌发育为典型成熟菌落,应用该培养基从腐败动物材料中分离鼠疫菌阳性检出率与龙胆紫选择培养基一致。结论4%十二烷基硫酸钠选择培养基分离鼠疫菌效果优于龙胆紫选择培养基,可用于野外腐败动物材料的鼠疫菌快速检验。

关键词：选择敏感培养基腐败材料鼠疫耶尔森氏菌快速检测现场应用

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