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Caielli S, Balasubramanian P, Rodriguez-Alcazar J, Balaji U, Wan Z, Baisch J, Smitherman C, Walters L, Sparagana P, Nehar-Belaid D, Marches R, Nassi L, Stewart K, Fuller J, Banchereau JF, Gu J, Wright T, Pascual V. An unconventional mechanism of IL-1β secretion that requires Type I IFN in lupus monocytes. bioRxiv 2023:2023.08.03.551696. [PMID: 37577613 PMCID: PMC10418156 DOI: 10.1101/2023.08.03.551696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Systemic Lupus Erythematosus (SLE) is characterized by autoreactive B cell activation, upregulation of Type I Interferon (IFN) and widespread inflammation. Mitochondrial nucleic acids (NAs) are increasingly recognized as triggers of IFN 1 . Thus, defective removal of mitochondria from mature red blood cells (Mito + RBCs), a feature of SLE, contributes to IFN production by myeloid cells 2 . Here we identify blood monocytes (Mo) that have internalized RBCs and co-express IFN-stimulated genes (ISGs) and interleukin-1β (IL-1β) in SLE patients with active disease. We show that ISG expression requires the interaction between Mito + RBC-derived mitochondrial DNA (mtDNA) and cGAS, while IL-1β production entails Mito + RBC-derived mitochondrial RNA (mtRNA) triggering of RIG-I-like receptors (RLRs). This leads to the cytosolic release of Mo-derived mtDNA that activates the NLRP3 inflammasome. Importantly, IL-1β release depends on the IFN-inducible myxovirus resistant protein 1 (MxA), which enables the translocation of this cytokine into a trans-Golgi network (TGN)-mediated unconventional secretory pathway. Our study highlights a novel and synergistic pathway involving IFN and the NLRP3 inflammasome in SLE.
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2
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Kim S, Stroski KM, Killeen G, Smitherman C, Simcik MF, Brooks BW. 8:8 Perfluoroalkyl phosphinic acid affects neurobehavioral development, thyroid disruption, and DNA methylation in developing zebrafish. Sci Total Environ 2020; 736:139600. [PMID: 32474277 DOI: 10.1016/j.scitotenv.2020.139600] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Recent studies have reported potential neurotoxicity and epigenetic alteration associated with exposure to several per- and polyfluoroalkyl substances (PFASs). However, such information is limited to a few compounds (e.g., perfluorooctane sulfonate), primarily based on rodent experiments, and the underlying toxicological mechanism(s) for many PFAS in the environment remain poorly understood. In the present study, we investigated 8:8 perfluoroalkyl phosphinic acid (8:8 PFPiA), an under-studied PFAS with high persistency in the environment and biota, using the zebrafish model. We exposed zebrafish embryos (<4 hpf) to various concentrations of 8:8 PFPiA (0, 0.0116, 0.112, 0.343, 1.34, 5.79 μM) for 144 h. Although there was no significant change in survival, hatchability and malformations, zebrafish locomotor speed at 120 h significantly decreased in dark photoperiod. At 144 h, several genes related to thyroid hormones that are essential for neurodevelopment, including corticotropin releasing hormone b (crhb), iodothyronine deiodinase 3a (dio3a), thyroid-stimulating hormone receptor (tshr) and nkx2 homeobox1 (nkx 2.1), were up-regulated by 8:8 PFPiA at 5.79 μM. 8:8 PFPiA also significantly down-regulated a neurodevelopmental gene, elav like neuron-specific RNA binding protein (elavl3), at 1.34 and 5.79 μM; in addition, one oxidative stress gene was slightly but significantly up-regulated. Further, global DNA methylation was significantly decreased at higher treatment levels, identifying effects of 8:8 PFPiA on epigenetic regulation. However, promoter DNA methylation of selected genes (dio3, tshr, nkx2.1) were not statistically altered, though dio3 methylation showed a decreasing trend with 8:8 PFPiA exposure. Our results specifically advance an understanding of molecular toxicology of PFPiA and more broadly present an approach to define diverse responses during animal alternative assessments of PFASs.
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Affiliation(s)
- Sujin Kim
- Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76706, USA; Institute of Biomedical Studies, Baylor University, Waco, TX 76706, USA
| | - Kevin M Stroski
- Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76706, USA
| | - Grace Killeen
- Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76706, USA
| | | | - Matt F Simcik
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, MN 55455, USA
| | - Bryan W Brooks
- Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX 76706, USA; Institute of Biomedical Studies, Baylor University, Waco, TX 76706, USA.
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Su Q, Bouteau A, Cardenas J, Uthra B, Wang Y, Smitherman C, Gu J, Igyártó BZ. Brief communication: Long-term absence of Langerhans cells alters the gene expression profile of keratinocytes and dendritic epidermal T cells. PLoS One 2020; 15:e0223397. [PMID: 31923202 PMCID: PMC6953782 DOI: 10.1371/journal.pone.0223397] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/17/2019] [Indexed: 11/18/2022] Open
Abstract
Tissue-resident and infiltrating immune cells are continuously exposed to molecules derived from the local cells that often come in form of secreted factors, such as cytokines. These factors are known to impact the immune cells’ biology. However, very little is known about whether the tissue resident immune cells in return also affect the local environment. In this study, with the help of RNA-sequencing, we show for the first time that long-term absence of epidermal resident Langerhans cells led to significant gene expression changes in the local keratinocytes and resident dendritic epidermal T cells. Thus, immune cells might play an active role in maintaining tissue homeostasis, which should be taken in consideration at data interpretation.
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Affiliation(s)
- Qingtai Su
- Baylor Scott & White Research Institute, Baylor Institute for Immunology Research, Dallas, Texas, United States of America
| | - Aurélie Bouteau
- Baylor Scott & White Research Institute, Baylor Institute for Immunology Research, Dallas, Texas, United States of America
- Baylor University, Institute of Biomedical Studies, Waco, Texas, United States of America
| | - Jacob Cardenas
- Baylor Scott & White Research Institute, Dallas, Texas, United States of America
| | - Balaji Uthra
- Baylor Scott & White Research Institute, Dallas, Texas, United States of America
| | - Yuanyaun Wang
- Baylor Scott & White Research Institute, Dallas, Texas, United States of America
| | - Cynthia Smitherman
- Baylor Scott & White Research Institute, Dallas, Texas, United States of America
| | - Jinghua Gu
- Baylor Scott & White Research Institute, Dallas, Texas, United States of America
| | - Botond Z. Igyártó
- Baylor Scott & White Research Institute, Baylor Institute for Immunology Research, Dallas, Texas, United States of America
- Thomas Jefferson University, Department of Microbiology and Immunology, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Lawrence MC, Darden CM, Vasu S, Kumano K, Gu J, Wang X, Chan J, Xu Z, Lemoine BF, Nguyen P, Smitherman C, Naziruddin B, Testa G. Profiling Gene Programs in the Blood During Liver Regeneration in Living Liver Donors. Liver Transpl 2019; 25:1541-1560. [PMID: 31340088 DOI: 10.1002/lt.25608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023]
Abstract
The human liver's capacity to rapidly regenerate to a full-sized functional organ after resection has allowed successful outcomes for living donor liver transplantation (LDLT) procedures. However, the ability to detect and track physiological changes occurring during liver regeneration after resection and throughout the restoration process is still lacking. We performed a comprehensive whole-transcriptome RNA sequencing analysis of liver and circulating blood tissue from 12 healthy LDLT donors to define biomarker signatures for monitoring physiological activities during liver regeneration at 14 time points for up to a 1-year procedural follow-up. LDLT donor liver tissue differentially expressed 1238 coding and noncoding genes after resection, and an additional 1260 genes were selectively regulated after LDLT. A total of 15,011 RNA transcript species were identified in the blood in response to liver resection. The transcripts most highly regulated were sequentially expressed within 3 distinct peaks that correlated with sets of functional genes involved in the induction of liver resection-specific innate immune response (peak 1), activation of the complement system (peak 2), and platelet activation and erythropoiesis (peak 3). Each peak corresponded with progressive phases of extracellular matrix degradation, remodeling, and organization during liver restoration. These processes could be tracked by distinct molecular signatures of up-regulated and down-regulated gene profiles in the blood during phases of liver repair and regeneration. In conclusion, the results establish temporal and dynamic transcriptional patterns of gene expression following surgical liver resection that can be detected in the blood and potentially used as biomarker signatures for monitoring phases of liver regeneration.
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Affiliation(s)
| | - Carly M Darden
- Institute of Biomedical Studies, Baylor University, Waco, TX
| | | | | | - Jinghua Gu
- Baylor Scott & White Research Institute, Dallas, TX
| | - Xuan Wang
- Baylor Scott & White Research Institute, Dallas, TX
| | - Jinyan Chan
- Baylor Scott & White Research Institute, Dallas, TX
| | - Zhaohui Xu
- Baylor Scott & White Research Institute, Dallas, TX
| | | | | | | | - Bashoo Naziruddin
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
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Heinonen S, Jartti T, Garcia C, Oliva S, Smitherman C, Anguiano E, de Steenhuijsen Piters WAA, Vuorinen T, Ruuskanen O, Dimo B, Suarez NM, Pascual V, Ramilo O, Mejias A. Rhinovirus Detection in Symptomatic and Asymptomatic Children: Value of Host Transcriptome Analysis. Am J Respir Crit Care Med 2016; 193:772-82. [PMID: 26571305 DOI: 10.1164/rccm.201504-0749oc] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
RATIONALE Rhinoviruses (RVs) are a major cause of symptomatic respiratory tract infection in all age groups. However, RVs can frequently be detected in asymptomatic individuals. OBJECTIVES To evaluate the ability of host transcriptional profiling to differentiate between symptomatic RV infection and incidental detection in children. METHODS Previously healthy children younger than 2 years old (n = 151) were enrolled at four study sites and classified into four clinical groups: RV- healthy control subjects (n = 37), RV+ asymptomatic subjects (n = 14), RV+ outpatients (n = 30), and RV+ inpatients (n = 70). Host responses were analyzed using whole-blood RNA transcriptional profiles. MEASUREMENTS AND MAIN RESULTS RV infection induced a robust transcriptional signature, which was validated in three independent cohorts and by quantitative real-time polymerase chain reaction with high prediction accuracy. The immune profile of symptomatic RV infection was characterized by overexpression of innate immunity and underexpression of adaptive immunity genes, whereas negligible changes were observed in asymptomatic RV+ subjects. Unsupervised hierarchical clustering identified two main clusters of subjects. The first included 93% of healthy control subjects and 100% of asymptomatic RV+ subjects, and the second comprised 98% of RV+ inpatients and 88% of RV+ outpatients. Genomic scores of healthy control subjects and asymptomatic RV+ children were similar and significantly lower than those of RV+ inpatients and outpatients (P < 0.0001). CONCLUSIONS Symptomatic RV infection induced a robust and reproducible transcriptional signature, whereas identification of RV in asymptomatic children was not associated with significant systemic transcriptional immune responses. Transcriptional profiling represents a useful tool to discriminate between active infection and incidental virus detection.
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Affiliation(s)
- Santtu Heinonen
- 1 Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, and
| | | | - Carla Garcia
- 3 Division of Pediatric Infectious Diseases, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Silvia Oliva
- 4 Division of Pediatric Emergency Medicine and Critical Care, Regional University Hospital of Malaga, Malaga, Spain
| | | | | | - Wouter A A de Steenhuijsen Piters
- 6 Department of Pediatric Immunology and Infectious Diseases, The Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, the Netherlands; and
| | - Tytti Vuorinen
- 7 Department of Clinical Virology, Turku University Hospital, Turku, Finland
| | | | - Blerta Dimo
- 1 Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, and
| | - Nicolas M Suarez
- 1 Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, and
| | | | - Octavio Ramilo
- 1 Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, and.,8 Division of Pediatric Infectious Diseases, Nationwide Children's Hospital, Columbus, Ohio.,9 The Ohio State University College of Medicine, Columbus, Ohio
| | - Asuncion Mejias
- 1 Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, and.,8 Division of Pediatric Infectious Diseases, Nationwide Children's Hospital, Columbus, Ohio.,9 The Ohio State University College of Medicine, Columbus, Ohio
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Smitherman C, Chen B, Samei E. SU-F-18C-01: Minimum Detectability Analysis for Comprehensive Sized Based Optimization of Image Quality and Radiation Dose Across CT Protocols. Med Phys 2014. [DOI: 10.1118/1.4889085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Tian X, Smitherman C, Christiansen O, Frush D, Samei E. TU-C-103-07: Prospective Estimation of Diagnostic Performance and Radiation Dose for Individual CT Scans. Med Phys 2013. [DOI: 10.1118/1.4815396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Smitherman C. Dealing with the patient's denial--what should you do? Nursing 1981; 11:71. [PMID: 6913832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Smitherman C. Your patient's anxious--what should you do? Nursing 1981; 11:73. [PMID: 6912404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Smitherman C. The vocal behavior of infants as related to the nursing procedure of Rocking. Nurs Res 1969; 18:256-8. [PMID: 5192171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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