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LACC1 Required for NOD2-Induced, ER Stress-Mediated Innate Immune Outcomes in Human Macrophages and LACC1 Risk Variants Modulate These Outcomes
Open accessAbstract
LACC1 genetic variants are associated with multiple immune-mediated diseases. However, laccase domain containing-1 (LACC1) functions are incompletely defined. We find that upon stimulation of the pattern-recognition receptor (PRR) NOD2, LACC1 localizes to the endoplasmic reticulum (ER) and forms a complex with ER-stress sensors. All three ER-stress branches, PERK, IRE1α, and ATF6, are required for NOD2-induced signaling, cytokines, and antimicrobial pathways in human macrophages. LACC1, and its localization to the ER, is required for these outcomes. Relative to wild-type (WT) LACC1, transfection of the common Val254 and rare Arg284 immune-mediated disease-risk LACC1 variants into HeLa cells and macrophages, as well as macrophages from LACC1 Val254 carriers, shows reduced NOD2-induced ER stress-associated outcomes; these downstream outcomes are restored by rescuing ER stress. Therefore, we identify ER stress to be essential in PRR-induced outcomes in macrophages, define a critical role for LACC1 in these ER stress-dependent events, and elucidate how LACC1 disease-risk variants mediate these outcomes.
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Endocytotic exodus of microbes in barrier dysfunction Crohn's disease induces mucosal inflammation.
“Endocytotic exodus of microbes in the barrier dysfunction CD, induces mucosal inflammation [180,181].”
From Insights of Endocytosis Signaling in Health and Disease (2023) · cites this paper as [181]
The Results section (page unavailable) says impaired microbial clearance in intestinal tissues can increase susceptibility to IBD, and the Introduction (page unavailable) links epithelial-cell defects to intestinal inflammation. Neither passage says that microbes cross a dysfunctional barrier by an endocytotic process or that this process induces mucosal inflammation in Crohn’s disease. (LLM, conf=0.77)
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TLR activation of the transcription factor XBP1 regulates innate immune responses in macrophages
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Insights of Endocytosis Signaling in Health and Disease
Pathak, C., Vaidya, F. U., Waghela, B. N., Jaiswara, P. K., Gupta, V. K., Kumar, A., Rajendran, B. K., & Ranjan, K. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms24032971 · Cited by 59
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Metadata
- Authors
- Huang, C., Hedl, M., Ranjan, K., & Abraham, C.
- Affiliations
- Yale University (US)
- Corresponding author
- Abraham, Clara
- Venue
- Cell Reports
- Publisher
- Elsevier BV
- Published
- 2019-12
- Volume
- 29
- Issue
- 13
- Pages
- 4525-4539.e4
- ISSN
- 2211-1247 (ISSN-L)
- PMC
- PMC7372507
- OpenAlex
- W2998191989
- Cited by
- 30
- References
- 3
- Citations by year
- 2025: 7 · 2024: 3 · 2023: 6 · 2022: 3 · 2021: 6 · 2020: 5
- FWCI
- 1.85
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Cell Reports (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- U.S. Department of Defense (W81XWH-16-1-01-78)
- National Institutes of Health (R01DK099097, R01DK106593, DKP30-34989, DK062422)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
- Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
- Keywords
- NOD2, endoplasmic reticulum stress, innate immunity, macrophages, PERK, IRE1α, ATF6, pattern recognition receptors, cytokine production, immune-mediated diseases
- MeSH terms
- Endoplasmic Reticulum, Endoribonucleases, Escherichia coli, Gene Expression Regulation, HeLa Cells, Humans, Immunity, Innate, Macrophages, Phagocytosis, Risk, Enterococcus faecalis, Signal Transduction, Protein Serine-Threonine Kinases, eIF-2 Kinase, Intracellular Signaling Peptides and Proteins, Activating Transcription Factor 6, Nod2 Signaling Adaptor Protein, Host-Pathogen Interactions, Endoplasmic Reticulum Stress, Primary Cell Culture
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