In this issue, we introduce the second part of our review series focusing on lesser-known enigmatic inflammasomes. This part of the collection introduces one more under-studied NLR, NLRP7, and not only its role as a regulator of inflammation in response to bacterial infections but also its non-inflammasome role in early pregnancy. In addition, the enigmatic function of extracellular ASC specks is also introduced, where extracellular ASC specks are presented as 'danger signals' to propagate inflammation. The series is concluded with an article that reviews the immunometabolic regulation of all of these lesser-known NLRs, demonstrating that metabolic regulation of inflammasome activation is central for the whole NLR family. These three reviews, together with the four articles that were published in the first part of the series in December 2020, offer new insights into the complex functions of NLRs, well beyond the well-known NLRP3. The review series as a whole provides a thought-provoking platform with some of the latest findings in the NLR field and sparks our imagination into what might be discovered in this space in the future.
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http://dx.doi.org/10.1111/imm.13387 | DOI Listing |
Genome Biol Evol
July 2024
Department of Integrative Immunobiology, Duke University, Durham, NC 27710, USA.
Inflammasomes are multiprotein complexes that form in response to ligands originating from pathogens as well as alterations of normal cell physiology caused by infection or tissue damage. These structures engage a robust inflammatory immune response that eradicates environmental microbes before they cause disease, and slow the growth of bona fide pathogens. Despite their undeniable utility in immunity, inflammasomes are radically reduced in birds.
View Article and Find Full Text PDFCell
July 2024
Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA. Electronic address:
NLRs constitute a large, highly conserved family of cytosolic pattern recognition receptors that are central to health and disease, making them key therapeutic targets. NLRC5 is an enigmatic NLR with mutations associated with inflammatory and infectious diseases, but little is known about its function as an innate immune sensor and cell death regulator. Therefore, we screened for NLRC5's role in response to infections, PAMPs, DAMPs, and cytokines.
View Article and Find Full Text PDFCell Death Discov
March 2024
Department of Geriatrics, Medical Center for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China.
The cytoplasmic pattern recognition receptor, absent in melanoma 2 (AIM2), detects cytosolic DNA, activating the inflammasome and resulting in pro-inflammatory cytokine production and pyroptotic cell death. Recent research has illuminated AIM2's contributions to PANoptosis and host defense. However, the role of AIM2 in acetaminophen (APAP)-induced hepatoxicity remains enigmatic.
View Article and Find Full Text PDFAdv Sci (Weinh)
November 2023
Department of Cell and Developmental Biology at School of Life Sciences, State Key Laboratory of Genetic Engineering, Institute of Metabolism and Integrative Biology, Human Phenome Institute, Department of Liver Surgery and Transplantation of Liver Cancer Institute at Zhongshan Hospital, Fudan University, Shanghai, 200438, China.
The anti-tumor immune response relies on interactions among tumor cells and immune cells. However, the molecular mechanisms by which tumor cells regulate DCs as well as DCs regulate T cells remain enigmatic. Here, the authors identify a super signaling complex in DCs that mediates the Arf1-ablation-induced anti-tumor immunity.
View Article and Find Full Text PDFMol Immunol
September 2023
Department of Environmental Health, School of Public Health, Shanxi Medical University, Taiyuan, China; Yellow River Basin Ecological Public Health Security Center, Shanxi Medical University, Taiyuan, China; Key Laboratory of Coal Environmental Pathogenicity and Prevention (Shanxi Medical University), Ministry of Education, China. Electronic address:
Recent evidence has suggested that fine particulate matter (PM) can induce inflammatory injury in spleen. However, the underlying mechanisms of injury remain enigmatic. In this study, we aim to clarify the inflammatory injury mechanisms of PM through investigating the crosstalk between autophagy and nod-like receptor protein 3 (NLRP3) inflammasome.
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