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Eosinophils promote CD8+ T cell memory generation to potentiate anti-bacterial immunity

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Signal Transduction and Targeted Therapy 2024年第3期9卷 1230-1243页

作者： Jun Zhou Jiaqi Liu Bingjing Wang Nan Li Juan Liu Yanmei Han Xuetao Cao Institute of immunology Zhejiang University School of MedicineHangzhou 310058China National Key Laboratory of Immunity and inflammation Institute of ImmunologyNaval Medical UniversityShanghai 200433China Department of immunology Center for ImmunotherapyInstitute of Basic Medical SciencesPeking Union Medical CollegeChinese Academy of Medical SciencesBeijing 100005China Institute of immunology College of Life SciencesNankai UniversityTianjin 300071China

Memory CD8+T cell generation is crucial for pathogen elimination and effective vaccination against *** cellular and molecular circuitry that underlies the generation of memory CD8+T cells remains *** can modulate inflammatory allergic responses and interact with lymphocytes to regulate their functions in immune *** we report that eosinophils are required for the generation of memory CD8+T cells by inhibiting CD8+T cell ***-deficient mice display significantly impaired memory CD8+T cell response and weakened resistance against Listeria monocytogenes(L.m.)***,eosinophils secrete interleukin-4(IL-4)to inhibit JNK/Caspase-3 dependent apoptosis of CD8+T cells upon *** in ***,active eosinophils are recruited into the spleen and secrete more IL-4 to suppress CD8+T cell apoptosis during early stage of *** in *** transfer of wild-type(WT)eosinophils but not IL-4-deficient eosinophils into eosinophil-deficient mice could rescue the impaired CD8+T cell memory ***,our findings suggest that eosinophil-derived IL-4 promotes the generation of CD8+T cell memory and enhances immune defense against *** study reveals a new adjuvant role of eosinophils in memory T cell generation and provides clues for enhancing the vaccine potency via targeting eosinophils and related cytokines.

关键词： impaired immunity spleen

A novel structural variant of RET causes familial Hirschsprung's disease via nonsense-mediated mRNA decay

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Genes & Diseases 2024年第1期11卷 7-10页

作者： Qi Wang Siyu Pu Bo Xiang Jing Chen Department of Pediatric Surgery and Laboratory of Pediatric Surgery Rare Diseases CenterInstitute of Immunology and InflammationFrontiers Science Center for Disease-Related Molecular NetworkWest China HospitalSichuan UniversityChengduSichuan 610041China

Hirschsprung's disease(HsCR)is the most common type of developmental gastrointestinal malformation causing intestinal obstruction in children,with an incidence of 1/5000 in live births.1 it is characterized by the absence of intrinsic ganglion cells in the myenteric and submucosal plexuses of the distal gastrointestinal tract,leading to the dysregulation of smooth muscle contraction/relaxation and resulting in intestinal *** on the length of the aganglionic intestine,HSCR can be categorized into short-segmental HSCR(S-HSCR),which affects up to the sigmoid colon from the anus,and long-segmental HSCR(LHSCR),which affects beyond the sigmoid colon.1 In some rare conditions,aganglionic lesions can affect the full length of the colon or even the whole intestine.

关键词： intestine colon relaxation

Immune checkpoint inhibitors:breakthroughs in cancer treatment

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Cancer Biology & Medicine 2024年第6期21卷 451-472页

作者： Xueqing Kong Jinyi Zhang Shuwei Chen Xianyang Wang Qing Xi Han Shen Rongxin Zhang Laboratory of immunology and inflammation School of Life Sciences and BiopharmaceuticsGuangdong Pharmaceutical UniversityGuangzhou 510006China Department of Biology School of Life Sciences and BiopharmaceuticsGuangdong Pharmaceutical UniversityGuangzhou 510006China

Over the past two decades,immunotherapies have increasingly been considered as first-line treatments for most *** such treatment is immune checkpoint blockade(ICB),which has demonstrated promising results against various solid tumors in clinical *** antibodies(mAbs)are currently available as immune checkpoint inhibitors(ICIs).These ICIs target specific immune checkpoints,including cytotoxic T-lymphocyte-associated antigen-4(CTLA-4)and programmed cell death protein 1(PD-1).Clinical trial results strongly support the feasibility of this immunotherapeutic ***,a substantial proportion of patients with cancer develop resistance or tolerance to treatment,owing to tumor immune evasion mechanisms that counteract the host immune ***,substantial research focus has been aimed at identifying additional ICIs or synergistic inhibitory receptors to enhance the effectiveness of anti-PD-1,anti-programmed cell death ligand 1(anti-PD-L1),and anti-CTLA-4 ***,several immune checkpoint molecular targets have been identified,such as T cell immunoreceptor with Ig and ITIM domains(TIGIT),mucin domain containing-3(TIM-3),lymphocyte activation gene-3(LAG-3),V-domain immunoglobulin suppressor of T cell activation(VISTA),B and T lymphocyte attenuator(BTLA),and signal-regulatory proteinα(SIRPα).Functional m Abs targeting these molecules are under ***-4,PD-1/PD-L1,and other recently discovered immune checkpoint proteins with distinct structures are at the forefront of *** review discusses these structures,as well as clinical progress in m Abs targeting these immune checkpoint molecules and their potential applications.

关键词： Immunotherapy cancer ICIs PD-1 CTLA-4

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Nutritional competition within tumor microenvironment dictates anti-tumor immunity

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National Science Review 2024年第2期11卷 98-100页

作者： Yankang Fei Xuetao Cao Juan Liu National Key Laboratory of Immunity and inflammation Institute of Immunology Naval Medical University Department of immunology Chinese Academy of Medical Sciences Institute of immunology College of Life Sciences Nankai University

The crosstalk between metabolism and immunity has emerged as an essential regulator of tumor immune escape, and targeting immunometabolic pathways holds great potential for cancer immunotherapy [1]. Abnormal metabolic...

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Not to be and how not to be:the questions of Tregs controlled by RIPK1

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Cellular & Molecular immunology 2024年第2期21卷 205-206页

作者： Zhengcai Peng Huiyuan Zhang Hongbo Hu center for immunology and Hematology Department of Biotherapy and Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu610041China Chongqing International Institute for immunology Chongqing401338China

Millions of cells undergo daily cell death,a process essential for maintaining physiological homeostasis and *** forms of cell death,such as apoptosis,necroptosis,ferroptosis and pyroptosis,have been extensively studied for their distinct biological functions[1,2].Generally,programmed cell death,like apoptosis,is considered physiological and results in little to no inflammatory response.

关键词： death homeostasis pathogenesis

Di-and tri-methylation of histone H3K36 play distinct roles in DNA double-strand break repair

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Science China(Life Sciences) 2024年第6期67卷 1089-1105页

作者： Runfa Chen Meng-Jie Zhao Yu-Min Li Ao-Hui Liu Ru-Xin Wang Yu-Chao Mei Xuefeng Chen Hai-Ning Du Hubei Key Laboratory of Cell Homeostasis College of Life SciencesTaiKang Center for Life and Medical SciencesFrontier Science Center for Immunology and MetabolismHubei Clinical Research Center of Emergency and ResuscitationEmergency Center of Zhongnan HospitalWuhan UniversityWuhan 430072China Hubei Key Laboratory of Cell Homeostasis College of Life SciencesTaiKang Center for Life and Medical SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhan 430072China

Histone H3 Lys36(H3K36)methylation and its associated modifiers are crucial for DNA double-strand break(DSB)repair,but the mechanism governing whether and how different H3K36 methylation forms impact repair pathways is ***,we unveil the distinct roles of H3K36 dimethylation(H3K36me2)and H3K36 trimethylation(H3K36me3)in DSB repair via non-homologous end joining(NHEJ)or homologous recombination(HR).Yeast cells lacking H3K36me2 or H3K36me3 exhibit reduced NHEJ or HR efficiency.y Ku70 and Rfa1 bind H3K36me2-or H3K36me3-modified peptides and chromatin,*** these interactions impairs y Ku70 and Rfa1 recruitment to damaged H3K36me2-or H3K36me3-rich loci,increasing DNA damage sensitivity and decreasing repair ***,H3K36me2-enriched intergenic regions and H3K36me3-enriched gene bodies independently recruit y Ku70 or Rfa1 under DSB ***,human KU70 and RPA1,the homologs of y Ku70 and Rfa1,exclusively associate with H3K36me2 and H3K36me3 in a conserved *** findings provide valuable insights into how H3K36me2 and H3K36me3 regulate distinct DSB repair pathways,highlighting H3K36 methylation as a critical element in the choice of DSB repair pathway.

关键词： histone H3K36 methylation Ku70 RPA non-homologous end joining homologous recombination

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Transcriptomic and pathological profiling of a new congenic mouse model with Lepr mutation:Evaluating susceptibility to the development of obesity and NAFLD

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Genes & Diseases 2024年第3期11卷 34-38页

作者： MJ Mahesh Kumar Shailendra Arindkar Masum Saini Perumal Nagarajan National Institute of immunology New Delhi 100067India center for Cellular and Molecular Biology Hyderabad 500007India Regional center for Biotechnology Faridabad 121001India

Non-alcoholic fatty liver disease(NAFLD)and type 2 diabetes mellitus(T2DM)are two disease conditions for which obesity is a risk factor.^(1)Due to the close relationship between the three pathologies,researchers frequently use the same mouse models to identify the underlying processes of obesity,NAFLD,and *** instance,leptin(Lep)-null(ob/ob)and leptin receptor(Lepr)-deficient(db/db)mice spontaneously develop NAFLD and show different phenotypes of extreme obesity and diabetes,respectively.

关键词： obesity NAFLD Lep

Long-COVID-19: the persisting imprint of SARS-CoV-2 infections on the innate immune system

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Signal Transduction and Targeted Therapy 2024年第1期9卷 12-13页

作者： Marianne Boes Pascal Falter-Braun center for Translational immunology and Department of Pediatric immunology University Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands Institute of Network Biology(INET) Molecular Targets and Therapeutics Center(MTTC)Helmholtz MunichNeuherbergGermany Microbe-Host Interactions Faculty of BiologyLudwig-Maximilians-Universität MünchenPlanegg-MartinsriedGermany

In a recent Cell publication,Cheong et *** how COVID-19 causes IL-6 induced epigenetic reprogramming of human immune stem cells,which causes lasting alterations in the composition and response characteristics of circulating immune cells.1 The study provides important insights into the mechanisms by which SARSCoV-2 infections impact the human immune system and is an important hook into unraveling the mechanisms of post-acute sequelae of COVID-19(PASC)commonly referred to as longCOVID.

关键词： system COV programming

Expanding the horizons of targeted protein degradation:A non-small molecule perspective

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2402-2427页

作者： Xiaowei Huang Fengbo Wu Jing Ye Lian Wang Xiaoyun Wang Xiang Li Gu He Department of Pharmacy and Department of Dermatology&Venerology West China HospitalSichuan UniversityChengdu 610041China Department of Urology West China HospitalSichuan UniversityChengdu 610041China Laboratory of Dermatology Clinical Institute of Inflammation and ImmunologyFrontiers Science Center for Disease-Related Molecular Network and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China

Targeted protein degradation(TPD)represented by proteolysis targeting chimeras(PROTACs)marks a significant stride in drug discovery.A plethora of innovative technologies inspired by PROTAC have not only revolutionized the landscape of TPD but have the potential to unlock functionalities beyond ***-small-molecule-based approaches play an irreplaceable role in this field.A wide variety of agents spanning a broad chemical spectrum,including peptides,nucleic acids,antibodies,and even vaccines,which not only prove instrumental in overcoming the constraints of conventional small molecule entities but also provided rapidly renewing *** we summarize the burgeoning non-small molecule technological platforms inspired by PROTACs,including three major trajectories,to provide insights for the design strategies based on novel paradigms.

关键词： Targeted protein degradation Proteolysis targeting chimera Endocytosis Autophagy Proximity-inducing modality Post-translational modification