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Two distinct subpopulations of marginal zone B cells exhibit differential antibody-producing capacities and radioresistance

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Cellular & Molecular immunology 2024年第4期21卷 393-408页

作者： Sujin Lee Yeunjung Ko Hyun Woo Lee Won Joon Oh Hun Gi Hong Dinuka Ariyaratne Se Jin Im Tae Jin Kim Department of immunology Graduate School of Basic Medical ScienceSungkyunkwan University School of MedicineSuwon16419Republic of Korea Department of immunology and Molecular medicine Faculty of Medical SciencesUniversity of Sri JayewardenepuraNugegodaSri Lanka Present address:immunology and Microbiology Graduate Program Baylor College of MedicineHoustonTX77030USA

Marginal zone(MZ)B cells,which are splenic innate-like B cells that rapidly secrete antibodies(Abs)against blood-borne pathogens,are composed of heterogeneous ***,we showed that MZ B cells can be divided into two distinct subpopulations according to their CD80 expression ***80^(high)MZ B cells exhibited greater Ab-producing,proliferative,and IL-10-secreting capacities than did CD80^(low)MZ B ***,CD80^(high)MZ B cells survived 2-Gy whole-body irradiation,whereas CD80^(low)MZ B cells were depleted by irradiation and then repleted with one month after *** of CD80^(low)MZ B cells led to accelerated development of type II collagen(CII)-induced arthritis upon immunization with bovine ***80^(high)MZ B cells exhibited higher expression of genes involved in proliferation,plasma cell differentiation,and the antioxidant ***80^(high)MZ B cells expressed more autoreactive B cell receptors(BCRs)that recognized double-stranded DNA or CII,expressed more immunoglobulin heavy chain sequences with shorter complementarity-determining region 3 sequences,and included more clonotypes with no N-nucleotides or with B-1a BCR sequences than CD80^(low)MZ B *** transfer experiments showed that CD21^(+)CD23^(+)transitional 2 MZ precursors preferentially generated CD80^(low)MZ B cells and that a proportion of CD80^(low)MZ B cells were converted into CD80^(high)MZ B cells;in contrast,CD80^(high)MZ B cells stably remained CD80^(high)MZ B *** summary,MZ B cells can be divided into two subpopulations according to their CD80 expression levels,Ab-producing capacity,radioresistance,and autoreactivity,and these findings may suggest a hierarchical composition of MZ B cells with differential stability and BCR specificity.

关键词： Marginal Zone B Cell CD80 Autoreactivity Radioresistance

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ROS-induced metabolic reprogramming to one-carbon metabolism and S-adenosylmethionine-mediated epigenetic modification in IL-10-producing B cells for the resolution of pneumonia

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Cellular & Molecular immunology 2024年第2期21卷 203-204页

作者： Sujin Lee Tae Jin Kim Department of immunology Sungkyunkwan University School of MedicineSuwon16419Republic of Korea

B cells have an essential immunoregulatory function,which is mediated by the secretion of IL-10 and TGFβand interaction with activated CD4^(+)T *** antibody-independent function of B cells contributes to ameliorating autoimmune diseases or infection-induced tissue *** this Cellular and Molecular immunology issue,Fu et *** that regulatory B(Breg)cells play a critical role in resolving Pseudomonas aeruginosa-induced pneumonia[1].

关键词： metabolism pneumonia immunology

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You had me at PELO:a"Ribosome Rescuer"induces NLR inflammasome assembly

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Cellular & Molecular immunology 2024年第1期21卷 1-2页

作者： Zoie Magri Alexander Poltorak Graduate Program in immunology Tufts Graduate School of Biomedical Sciences136 Harrison AvenueBostonMA02111USA Department of immunology Tufts University School of MedicineBostonMA02111USA

Pyroptosis,an inflammatory form of programmed cell death,eliminates a niche where pathogens replicate,providing overall benefits to a *** left uncontrolled,pyroptosis can lead to severe *** pyroptotic activation has been implicated in neuroinflammation,cardiovascular disease,acute respiratory distress syndrome(ARDS),and many other diseases[1,2,3].Because of its multiple and permanent consequences,pyroptosis is a highly regulated signaling *** regulators of pyroptosis are NLR inflammasomes,which are activated by various“danger”signals such as ATP.

关键词： inflam NLR distress

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New insights into astrocyte diversity from the lens of transcriptional regulation and their implications for neurodegenerative disease treatments

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Neural Regeneration Research 2024年第11期19卷 2335-2336页

作者： Ibrahim Olabayode Saliu Guoyan Zhao Department of Genetics Washington University School of MedicineSt.LouisMOUSA Department of Neurology Department of Pathology and ImmunologyWashington University School of MedicineSt.LouisMOUSA

Astrocytes are a major glial cell type in the central nervous system,and they provide trophic and metabolic support to *** addition to these roles,they play crucial roles in modulating synaptic functions,development,and pruning(Brandebura et al.,2023).Astrocytes become reactive(activated)by undergoing morphological,molecular,and functional alterations in response to neuropathology such as in injuries and neurodegenerative diseases(NDs)(Escartin et al.,2021).

关键词： degenerative injuries

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The crosstalk between enteric nervous system and immune system in intestinal development,homeostasis and diseases

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Science China(Life Sciences) 2024年第1期67卷 41-50页

作者： Xindi Wang Chenbo Ding Hua-Bing Li Shanghai Institute of immunology State Key Laboratory of Oncogenes and Related GenesShanghai Jiao Tong University School of MedicineShanghai 200025China Shanghai Jiao Tong University school of medicine-Yale Institute for Immune Metabolism Shanghai Jiao Tong University School of MedicineShanghai 200025China

The gut is the largest digestive and absorptive organ,which is essential for induction of mucosal and systemic immune responses,and maintenance of metabolic-immune *** intestinal components contain the epithelium,stromal cells,immune cells,and enteric nervous system(ENS),as well as the outers,such as gut microbiota,metabolites,and *** dyshomeostasis of intestinal microenvironment induces abnormal intestinal development and functions,even colon diseases including dysplasia,inflammation and *** recent studies have identified that ENS plays a crucial role in maintaining the immune homeostasis of gastrointestinal(GI)*** crosstalk between ENS and immune cells,mainly macrophages,T cells,and innate lymphoid cells(ILCs),has been found to exert important regulatory roles in intestinal tissue programming,homeostasis,function,and *** this review,we mainly summarize the critical roles of the interactions between ENS and immune cells in intestinal homeostasis during intestinal development and diseases progression,to provide theoretical bases and ideas for the exploration of immunotherapy for gastrointestinal diseases with the ENS as potential novel targets.

关键词： enteric nervous system macrophages T cells innate lymphoid cells neuro-immune interactions

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Aryl hydrocarbon receptor:Linking environment to aging process in elderly patients with asthma

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Chinese Medical Journal 2024年第4期137卷 382-393页

作者： Tianrui Yang Rongjun Wan Wei Tu Sai Nithin Avvaru Peisong Gao Division of Allergy and Clinical immunology Department of MedicineJohns Hopkins University School of MedicineBaltimoreMD 21224USA Department of Geriatric medicine The First People’s Hospital of Yunnan ProvinceKunmingYunnan 650032China Department of Respiratory medicine Xiangya HospitalCentral South UniversityChangshaHunan 410008China The State Key Laboratory of Respiratory Disease for Allergy Shenzhen Key Laboratory of Allergy and ImmunologyShenzhen University School of MedicineShenzhenGuangdong 518055China

Aging is a significant risk factor for various diseases,including asthma,and it often leads to poorer clinical outcomes,particularly in elderly *** is recognized that age-related diseases are due to a time-dependent accumulation of cellular damage,resulting in a progressive decline in cellular and physiological functions and an increased susceptibility to chronic *** effects of aging affect not only the elderly but also those of younger ages,posing significant challenges to global ***,understanding the molecular mechanisms associated with aging in different diseases is *** intriguing factor is the aryl hydrocarbon receptor(AhR),which serves as a cytoplasmic receptor and ligand-activated transcription factor and has been linked to the aging ***,we review the literature on several major hallmarks of aging,including mitochondrial dysfunction,cellular senescence,autophagy,mitophagy,epigenetic alterations,and microbiome ***,we provide an overview of the impact of AhR on these hallmarks by mediating responses to environmental exposures,particularly in relation to the immune ***,we explore how aging hallmarks affect clinical characteristics,inflammatory features,exacerbations,and the treatment of *** is suggested that AhR signaling may potentially play a role in regulating asthma phenotypes in elderly populations as part of the aging process.

关键词： Aging Environment Reactive oxygen species Senescence Aryl hydrocarbon receptor Asthma

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Epigenetic modification in liver fibrosis:Promising therapeutic direction with significant challenges ahead

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1009-1029页

作者： Runping Liu Yajing Li Qi Zheng Mingning Ding Huiping Zhou Xiaojiaoyang Li school of Chinese Materia Medica Beijing University of Chinese MedicineBeijing 102400China school of Life Sciences Beijing University of Chinese MedicineBeijing 102400China Department of Microbiology and immunology Virginia Commonwealth UniversityRichmondVA 22460USA

Liver fibrosis,characterized by scar tissue formation,can ultimately result in liver ***’s a major cause of morbidity and mortality globally,often associated with chronic liver diseases like hepatitis or alcoholic and non-alcoholic fatty liver ***,current treatment options are limited,highlighting the urgent need for the development of new *** a reversible regulatory mechanism,epigenetic modification is implicated in many biological processes,including liver *** the epigenetic mechanisms involved in liver fibrosis could provide valuable insights into developing new treatments for chronic liver diseases,although the current evidence is still *** review provides a comprehensive summary of the regulatory mechanisms and critical targets of epigenetic modifications,including DNA methylation,histone modification,and RNA modification,in liver fibrotic *** potential cooperation of different epigenetic modifications in promoting fibrogenesis was also ***,available agonists or inhibitors regulating these epigenetic mechanisms and their potential application in preventing liver fibrosis were *** summary,elucidating specific druggable epigenetic targets and developing more selective and specific candidate medicines may represent a promising approach with bright prospects for the treatment of chronic liver diseases.

关键词： Liver fibrosis Epigenetics regulation DNA methylation Histone acetylation Histone methylation mRNA methylation Non-coding RNA Drug development

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Traditional Chinese medicine Integrated Responsive Microneedles for Systemic Sclerosis Treatment

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Research 2024年第1期2023卷 139-147页

作者： Xi Luan Xiaoxuan Zhang Min Nie Yuanjin Zhao Department of Rheumatology and immunology Nanjing Drum Tower HospitalSchool of PharmacyClinical College of Traditional Chinese and Western MedicineNanjing University of Chinese MedicineNanjing 210023China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China

Traditional Chinese medicine,such as Tripterygium wilfordii and Paeonia lactiflora,has potential values in treating systemic sclerosis(SSc)and other autoimmune diseases,while their toxic side effect elimination and precise tropical drug delivery are still ***,we present multiple traditional Chinese medicine integrated photoresponsive black phosphorus(BP)microneedles(MNs)with the desired features for the SSc *** employing a template-assisted layer-by-layer curing method,such MNs with triptolide(TP)/paeoniflorin(Pae)needle tips and BP-hydrogel needle bottoms could be well *** combined administration of TP and Pae can not only provide anti-inflammatory,detoxification,and immunomodulatory effects to treat skin lesions in the early stage of SSc but also remarkably reduce the toxicity of single drug ***,the additive BPs possess good biocompatibility and near-infrared(NIR)responsiveness,imparting the MN photothermal-controlled drug release *** on these features,we have demonstrated that the traditional Chinese medicine integrated responsive MNs could effectively improve skin fibrosis and telangiectasia,reduce collagen deposition,and reduce epidermal thickness in the SSc mouse *** results indicated that the proposed Chinese medicine integrated responsive MNs had enormous potential in clinical therapy of SSc and other diseases.

关键词： needle precise template

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New insights into the role of the immune inhibitory receptor VSTM1 in autoimmune disease

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Cellular & Molecular immunology 2024年第1期21卷 95-96页

作者： Najun Miaol Jing Wang Center for Immune-related Diseases at Shanghai Institute of immunology Rujin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina

Immune inhibitory receptors(IRs)are germline-encoded transmembrane receptors that function as negative regulators of immune cells and dampen the cellular response to keep the immune system in balance^([1]).There are more than 300 potential immune IRs encoded in the human genome^([2]).The most studied IRs in cancer immunity are programmed cell death protein 1,cytotoxic T lymphocyte protein 4 in T cells,and killer cell Ig-like IRs on NK cells^([3]).

关键词： immunity immune autoimmune

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Efficacy of interleukin-17 inhibitors on radiographic progression in psoriatic arthritis:A systematic review and meta-analysis

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Chinese Medical Journal 2024年第4期137卷 473-475页

作者： Han-Lei Jiang Yu Du Qiang Tong Sheng-Ming Dai Department of Rheumatology and immunology Shanghai Sixth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200233China

To the Editor:Psoriatic arthritis(PsA)is a highly heterogeneous inflammatory *** occurs in up to 30%of patients with psoriasis and can have severe impacts on peripheral joints,spine,tendon insertions,and fingers. ^([1])Radiographic progression is currently the preferred method for assessing structural damage of PsA. ^([2])Biologic treatment options for PsA include tumor necrosis factor-αinhibitors(TNFi),interleukin-12/23 inhibitors,and interleukin-17(IL-17)*** therapeutic effects of IL-17 inhibitors on structural damage were not consistent over multiple ***,a systematic review and meta-analysis of the available randomized controlled trials(RCTs)was conducted to quantify the overall effect of IL-17 inhibitors on structural damage in *** study was registered with PROSPERO(***42022301774).

关键词： damage analysis inhibitors

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