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Bullard RL, Olsen EL, Cheslock MA, Embers ME. Evaluation of the available animal models for Bartonella infections. One Health 2024; 18:100665. [PMID: 38223332 PMCID: PMC10784307 DOI: 10.1016/j.onehlt.2023.100665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 12/12/2023] [Indexed: 01/16/2024] Open
Abstract
The diseases caused by the Bartonella genus of bacteria are clinically diverse, and can be challenging to cure. The study of bartonellosis has been hampered by the lack of a suitable animal model. Preclinical studies for novel therapeutics and a competent host for vector transmission studies are needed to fill critical knowledge gaps. The studies included here are a representation of in vivo Bartonella research and the corresponding challenges. This review examines the current state of available animal models by assessing the success of various model species and strains in Bartonella infection. With a focus on the strengths and weaknesses of current animal models, the importance of these models for improvement of human health and veterinary care is emphasized.
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Affiliation(s)
- Rebekah L. Bullard
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA, USA
| | - Emily L. Olsen
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA, USA
| | - Mercedes A. Cheslock
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA, USA
| | - Monica E. Embers
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA, USA
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2
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Bangert C, Alkon N, Chennareddy S, Arnoldner T, Levine JP, Pilz M, Medjimorec MA, Ruggiero J, Cohenour ER, Jonak C, Damsky W, Griss J, Brunner PM. Dupilumab-associated head and neck dermatitis shows a pronounced type 22 immune signature mediated by oligoclonally expanded T cells. Nat Commun 2024; 15:2839. [PMID: 38565563 PMCID: PMC10987549 DOI: 10.1038/s41467-024-46540-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 03/01/2024] [Indexed: 04/04/2024] Open
Abstract
Dupilumab, an IL4R-blocking antibody, has shown clinical efficacy for atopic dermatitis (AD) treatment. In addition to conjunctivitis/blepharitis, the de novo appearance of head/neck dermatitis is now recognized as a distinct side effect, occurring in up to 10% of patients. Histopathological features distinct from AD suggest a drug effect, but exact underlying mechanisms remain unknown. We profiled punch biopsies from dupilumab-associated head and neck dermatitis (DAHND) by using single-cell RNA sequencing and compared data with untreated AD and healthy control skin. We show that dupilumab treatment was accompanied by normalization of IL-4/IL-13 downstream activity markers such as CCL13, CCL17, CCL18 and CCL26. By contrast, we found strong increases in type 22-associated markers (IL22, AHR) especially in oligoclonally expanded T cells, accompanied by enhanced keratinocyte activation and IL-22 receptor upregulation. Taken together, we demonstrate that dupilumab effectively dampens conventional type 2 inflammation in DAHND lesions, with concomitant hyperactivation of IL22-associated responses.
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Affiliation(s)
- Christine Bangert
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Natalia Alkon
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | | | - Tamara Arnoldner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Jasmine P Levine
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- New York Medical College, Valhalla, NY, USA
| | - Magdalena Pilz
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Marco A Medjimorec
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - John Ruggiero
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Emry R Cohenour
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Constanze Jonak
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - William Damsky
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
| | - Johannes Griss
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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Bullard RL, Cheslock M, Goud Gadila SK, Maggi RG, Breitschwerdt EB, Saied AA, Embers ME. A comparison of Bartonella henselae infection in immunocompetent and immunocompromised mice. PLoS One 2024; 19:e0297280. [PMID: 38346057 PMCID: PMC10861063 DOI: 10.1371/journal.pone.0297280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/02/2024] [Indexed: 02/15/2024] Open
Abstract
Bartonellosis refers to disease caused by the Bartonella genus of bacteria. The breadth of disease manifestations associated with Bartonella is currently expanding and includes regional lymphadenopathy, rheumatic, ocular, and neurological disorders. The dearth of knowledge regarding diagnosis, treatment and pathogenesis of this disease can be partially attributed to the lack of a reliable small animal model for the disease. For this study, Bartonella henselae, the most common species associated with human disease, was injected into Swiss Webster (SW) mice. When the outcome indicated that productive infection did not occur, SCID/Beige (immune compromised) mice were inoculated. While SW mice may potentially harbor an acute infection, less than 10 days in length, the SCID/Beige model provided a sustained infection lasting up to 30-days. These data indicate that SCID/Beige mice can provide a model to study Bartonella infection, therapeutics, and vector dynamics in the future.
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Affiliation(s)
- Rebekah L. Bullard
- Division of Immunology, Tulane University, Covington, Louisiana, United States of America
| | - Mercedes Cheslock
- Division of Immunology, Tulane University, Covington, Louisiana, United States of America
| | | | - Ricardo G. Maggi
- Intracellular Pathogens Research Laboratory, Department of Clinical Sciences, Comparative Medicine Institute, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Edward B. Breitschwerdt
- Intracellular Pathogens Research Laboratory, Department of Clinical Sciences, Comparative Medicine Institute, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Ahmad A. Saied
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University, Covington, Louisiana, United States of America
| | - Monica E. Embers
- Division of Immunology, Tulane University, Covington, Louisiana, United States of America
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Lionello FCP, Rotundo S, Bruno G, Marino G, Morrone HL, Fusco P, Costa C, Russo A, Trecarichi EM, Beltrame A, Torti C. Touching Base with Some Mediterranean Diseases of Interest from Paradigmatic Cases at the "Magna Graecia" University Unit of Infectious Diseases: A Didascalic Review. Diagnostics (Basel) 2023; 13:2832. [PMID: 37685370 PMCID: PMC10486464 DOI: 10.3390/diagnostics13172832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Among infectious diseases, zoonoses are increasing in importance worldwide, especially in the Mediterranean region. We report herein some clinical cases from a third-level hospital in Calabria region (Southern Italy) and provide a narrative review of the most relevant features of these diseases from epidemiological and clinical perspectives. Further, the pathogenic mechanisms involved in zoonotic diseases are reviewed, focusing on the mechanisms used by pathogens to elude the immune system of the host. These topics are of particular concern for individuals with primary or acquired immunodeficiency (e.g., people living with HIV, transplant recipients, patients taking immunosuppressive drugs). From the present review, it appears that diagnostic innovations and the availability of more accurate methods, together with better monitoring of the incidence and prevalence of these infections, are urgently needed to improve interventions for better preparedness and response.
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Affiliation(s)
- Ferdinando Carmelo Pio Lionello
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
| | - Salvatore Rotundo
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
| | - Gabriele Bruno
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
| | - Gabriella Marino
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
| | - Helen Linda Morrone
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
| | - Paolo Fusco
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
- Unit of Infectious and Tropical Diseases, “Mater Domini” Teaching Hospital, 88100 Catanzaro, Italy;
| | - Chiara Costa
- Unit of Infectious and Tropical Diseases, “Mater Domini” Teaching Hospital, 88100 Catanzaro, Italy;
| | - Alessandro Russo
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
- Unit of Infectious and Tropical Diseases, “Mater Domini” Teaching Hospital, 88100 Catanzaro, Italy;
| | - Enrico Maria Trecarichi
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
- Unit of Infectious and Tropical Diseases, “Mater Domini” Teaching Hospital, 88100 Catanzaro, Italy;
| | - Anna Beltrame
- College of Public Health, University of South Florida, Gainesville, FL 33620, USA;
| | - Carlo Torti
- Department of Medical and Surgical Sciences, University “Magna Graecia”, 88100 Catanzaro, Italy; (F.C.P.L.); (S.R.); (G.B.); (G.M.); (H.L.M.); (A.R.); (E.M.T.); (C.T.)
- Unit of Infectious and Tropical Diseases, “Mater Domini” Teaching Hospital, 88100 Catanzaro, Italy;
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Song X, Zhang L, Du X, Zheng Y, Jia T, Zhou T, Che D, Geng S. Neuroblast Differentiation-Associated Protein Derived Polypeptides: AHNAK(5758-5775) Induces Inflammation by Activating Mast Cells via ST2. Immunol Invest 2023; 52:178-193. [PMID: 36511894 DOI: 10.1080/08820139.2022.2151368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Psoriasis is a chronic inflammatory skin disease. Mast cells are significantly increased and activated in psoriatic lesions and are involved in psoriatic inflammation. Some endogenous substances can interact with the surface receptors of mast cells and initiate the release of downstream cytokines that participate in inflammatory reactions. Neuroblast differentiation-associated protein (AHNAK) is mainly expressed in the skin, esophagus, kidney, and other organs and participates in various biological processes in the human body. AHNAK and its derived peptides have been reported to be involved in the activation of mast cells and other immune processes. This study aimed to investigate whether AHNAK (5758-5775), a neuroblast differentiation-associated protein-derived polypeptide, could be considered a new endogenous substance in psoriasis patients, which activates mast cells and induces the skin inflammatory response contributing to psoriasis. Wild-type mice were treated with AHNAK(5758-5775) to observe the infiltration of inflammatory cells in the skin and cytokine release in vivo. The release of inflammatory mediators by mouse primary mast cells and the laboratory of allergic disease 2 (LAD2) human mast cells was measured in vitro. Molecular docking analysis, molecular dynamics simulation, and siRNA transfection were used to identify the receptor of AHNAK(5758-5775). AHNAK(5758-5775) could cause skin inflammation and cytokine release in wild-type mice and activated mast cells in vitro. Moreover, suppression of tumorigenicity 2 (ST2) might be a key receptor mediating AHNAK(5758-5775)'s effect on mast cells and cytokine release. We propose a novel polypeptide, AHNAK(5758-5775), which induces an inflammatory reaction and participates in the occurrence and development of psoriasis by activating mast cells.
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Affiliation(s)
- Xiangjin Song
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Lei Zhang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Xueshan Du
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Yi Zheng
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Tao Jia
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Tong Zhou
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Delu Che
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Songmei Geng
- Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
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Taber R, Pankowski A, Ludwig AL, Jensen M, Magsamen V, Lashnits E. Bartonellosis in Dogs and Cats, an Update. Vet Clin North Am Small Anim Pract 2022; 52:1163-1192. [DOI: 10.1016/j.cvsm.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Boonaramrueng K, Techakriengkrai N, Rodkhum C, Pusoonthornthum R. Risk factors of Bartonella spp. infection and the association between Bartonella spp. and T-lymphocyte subset alteration in asymptomatic retrovirus-infected cats in Bangkok Metropolitan, Thailand. Vet World 2022; 15:2399-2406. [DOI: 10.14202/vetworld.2022.2399-2406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Cats are a reservoir for Bartonella spp. infection in humans. Human bartonellosis causes disseminated inflammation to develop in immunocompromised patients, such as those infected with human immunodeficiency virus. However, the associated risks of Bartonella spp. infection in immunocompromised retroviral-infected cats have been inconclusive. This study aimed to evaluate the associated risks of Bartonella spp. infection with the alteration of T-lymphocyte subsets of retroviral-infected cats.
Materials and Methods: We collected blood samples from 161 client-owned cats at veterinary clinics and hospitals throughout the Bangkok Metropolitan area from 2017 to 2020. The samples underwent hematological biochemical tests, feline retroviral status evaluation, Bartonella spp. polymerase chain reaction assay, immunofluorescence assay, and CD4+ and CD8+ lymphocyte counts. Risk factors associated with Bartonella spp. infection were determined by odds ratio (OR). Hematological and biochemical parameters were compared using independent t-tests. CD4+ and CD8+ lymphocyte counts and the CD4+/CD8+ ratio were compared among groups classified according to their retroviral and Bartonella spp. infection status.
Results: The prevalence of Bartonella spp. in our study cohort was 16.1%, and the seroprevalence was 94.9%. Cats aged >1 year were at a higher risk of seropositivity than cats aged <1 year (OR: 4.296, 95% confidence interval: 1.010–18.275). The CD8+ percentage was significantly higher in seropositive cats (p = 0.026). There was a significant reduction in the CD4+/CD8+ ratio between cats negative for both retrovirus and Bartonella spp. infection and cats with concurrent retrovirus and Bartonella spp. infection (p = 0.041).
Conclusion: In endemic countries or areas, cat owners must be made aware of the risk of exposure to Bartonella spp. due to the high rate of bacteremia and seroprevalence. Retrovirus-infected cats with concurrent Bartonella spp. infection also showed a significant, inverted CD4+/CD8+ ratio, which may be used as a novel marker in bartonellosis. Similar studies focusing on the different stages of retrovirus infection should be undertaken further to elucidate the effect of retrovirus infection on Bartonella spp. infection.
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Affiliation(s)
- Krissda Boonaramrueng
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Navapon Techakriengkrai
- Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Channarong Rodkhum
- Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Rosama Pusoonthornthum
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand; Feline Health and Infectious Disease Research Unit for Excellence, Chulalongkorn University, Bangkok, 10330, Thailand
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Li L, Liu Y, Feng T, Zhou W, Wang Y, Li H. The AHNAK induces increased IL-6 production in CD4+ T cells and serves as a potential diagnostic biomarker for recurrent pregnancy loss. Clin Exp Immunol 2022; 209:291-304. [PMID: 35766885 PMCID: PMC9521664 DOI: 10.1093/cei/uxac067] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/09/2022] [Accepted: 06/28/2022] [Indexed: 01/23/2023] Open
Abstract
Disorganized maternal-fetal immune tolerance contributes to the occurrence of unexplained recurrent pregnancy loss (RPL). AHNAK is a scaffolding protein participating in the regulation of Ca2+ entry into T cells and the pathophysiology of diverse diseases. We performed differential gene expression analysis in decidual immune cells (DICs) isolated from three patients with RPL and from three healthy controls via RNA-sequencing (RNA-seq), which revealed 407 differentially expressed genes (DEGs). Among these DEGs, we underscored the clinical significance of elevated AHNAK mRNA and protein levels in DICs, peripheral blood mononuclear cells (PBMCs), and decidua of the patients with RPL, suggesting its potential use as a biomarker for the diagnosis of RPL. Especially, the ratios of decidual and blood AHNAK+CD4+ T cells in the CD4+ T cell population were significantly increased in patients with RPL, and the loss of AHNAK was further shown to inhibit interleukin (IL)-6 secretion in the CD4+ Jurkat cell line. Similar patterns were also observed in the clinical decidual and blood specimens. We uncovered that the AHNAK+CD4+ T cells could secrete more IL-6 than that the corresponding AHNAK-CD4+ T cells. Moreover, the frequencies of decidual and blood IL-6+CD4+ T cells in the CD4+ T-cell population were also increased in patients with RPL and showed significant positive correlations with the frequencies of AHNAK+CD4+ T cells. Our findings suggest that the elevated AHNAK expressed by CD4+ T cells may be involved in the immune dysregulation of RPL by increasing IL-6 production, illustrating its potential as a novel intervention target for RPL.
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Affiliation(s)
- Liman Li
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yuan Liu
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ting Feng
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Wenjie Zhou
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yanyun Wang
- Correspondence: Yanyun Wang, Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China. ; or Hong Li, Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China.
| | - Hong Li
- Correspondence: Yanyun Wang, Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China. ; or Hong Li, Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China.
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Biswas B, Guemiri R, Cadix M, Labbé CM, Chakraborty A, Dutertre M, Robert C, Vagner S. Differential Effects on the Translation of Immune-Related Alternatively Polyadenylated mRNAs in Melanoma and T Cells by eIF4A Inhibition. Cancers (Basel) 2022; 14:cancers14051177. [PMID: 35267483 PMCID: PMC8909304 DOI: 10.3390/cancers14051177] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/20/2022] [Accepted: 02/21/2022] [Indexed: 02/05/2023] Open
Abstract
Targeting the translation initiation complex eIF4F, which binds the 5' cap of mRNAs, is a promising anti-cancer approach. Silvestrol, a small molecule inhibitor of eIF4A, the RNA helicase component of eIF4F, inhibits the translation of the mRNA encoding the signal transducer and activator of transcription 1 (STAT1) transcription factor, which, in turn, reduces the transcription of the gene encoding one of the major immune checkpoint proteins, i.e., programmed death ligand-1 (PD-L1) in melanoma cells. A large proportion of human genes produce multiple mRNAs differing in their 3'-ends through the use of alternative polyadenylation (APA) sites, which, when located in alternative last exons, can generate protein isoforms, as in the STAT1 gene. Here, we provide evidence that the STAT1α, but not STAT1β protein isoform generated by APA, is required for silvestrol-dependent inhibition of PD-L1 expression in interferon-γ-treated melanoma cells. Using polysome profiling in activated T cells we find that, beyond STAT1, eIF4A inhibition downregulates the translation of some important immune-related mRNAs, such as the ones encoding TIM-3, LAG-3, IDO1, CD27 or CD137, but with little effect on the ones for BTLA and ADAR-1 and no effect on the ones encoding CTLA-4, PD-1 and CD40-L. We next apply RT-qPCR and 3'-seq (RNA-seq focused on mRNA 3' ends) on polysomal RNAs to analyze in a high throughput manner the effect of eIF4A inhibition on the translation of APA isoforms. We identify about 150 genes, including TIM-3, LAG-3, AHNAK and SEMA4D, for which silvestrol differentially inhibits the translation of APA isoforms in T cells. It is therefore crucial to consider 3'-end mRNA heterogeneity in the understanding of the anti-tumor activities of eIF4A inhibitors.
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Affiliation(s)
- Biswendu Biswas
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
- INSERM U981, Gustave Roussy Cancer Campus, 94805 Villejuif, France;
- Faculté de Médecine, Université Paris Sud, Université Paris-Saclay, 94270 Kremlin-Bicêtre, France
| | - Ramdane Guemiri
- INSERM U981, Gustave Roussy Cancer Campus, 94805 Villejuif, France;
- Faculté de Médecine, Université Paris Sud, Université Paris-Saclay, 94270 Kremlin-Bicêtre, France
| | - Mandy Cadix
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
| | - Céline M. Labbé
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
| | - Alina Chakraborty
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
| | - Martin Dutertre
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
| | - Caroline Robert
- INSERM U981, Gustave Roussy Cancer Campus, 94805 Villejuif, France;
- Faculté de Médecine, Université Paris Sud, Université Paris-Saclay, 94270 Kremlin-Bicêtre, France
- Correspondence: (C.R.); (S.V.)
| | - Stéphan Vagner
- Institut Curie, PSL Research University, CNRS UMR 3348, INSERM U1278, 91401 Orsay, France; (B.B.); (M.C.); (C.M.L.); (A.C.); (M.D.)
- Biologie de l’ARN, Signalisation et Cancer, Université Paris Sud, Université Paris-Saclay, CNRS UMR 3348, 91401 Orsay, France
- Équipe Labellisée Ligue Contre le Cancer, 91401 Orsay, France
- Correspondence: (C.R.); (S.V.)
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Zardab M, Stasinos K, Grose RP, Kocher HM. The Obscure Potential of AHNAK2. Cancers (Basel) 2022; 14:cancers14030528. [PMID: 35158796 PMCID: PMC8833689 DOI: 10.3390/cancers14030528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary AHNAK2 is a relatively newly discovered protein. It can interact with many other proteins. This protein is increased in cells of variety of different cancers. AHNAK2 may play a vital role in cancer formation. AHNAK2 may have a role in early detection of cancer. This obscure potential of AHNAK2 is being studied. Abstract AHNAK2 is a protein discovered in 2004, with a strong association with oncogenesis in various epithelial cancers. It has a large 616 kDa tripartite structure and is thought to take part in the formation of large multi-protein complexes. High expression is found in clear cell renal carcinoma, pancreatic ductal adenocarcinoma, uveal melanoma, and lung adenocarcinoma, with a relation to poor prognosis. Little work has been done in exploring the function and relation AHNAK2 has with cancer, with early studies showing promising potential as a future biomarker and therapeutic target.
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He Y, Fang Y, Zhai B, Liu X, Zhu G, Zhou S, Xu Y, Wang X, Su W, Wang R. Gm40600 promotes CD4 + T-cell responses by interacting with Ahnak. Immunology 2021; 164:190-206. [PMID: 33987830 PMCID: PMC8358717 DOI: 10.1111/imm.13365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 04/11/2021] [Accepted: 04/29/2021] [Indexed: 12/31/2022] Open
Abstract
It is important to characterize novel proteins involved in T- and B-cell responses. Our previous study demonstrated that a novel protein, Mus musculus Gm40600, reduced the proliferation of Mus musculus plasmablast (PB)-like SP 2/0 cells and B-cell responses induced in vitro by LPS. In the present study, we revealed that Gm40600 directly promoted CD4+ T-cell responses to indirectly up-regulate B-cell responses. Importantly, we found that CD4+ T-cell responses, including T-cell activation and differentiation and cytokine production, were increased in Gm40600 transgenic (Tg) mice and were reduced in Gm40600 knockout (KO) mice. Finally, we demonstrated that Gm40600 promoted the Ahnak-mediated calcium signalling pathway by interacting with Ahnak to maintain a cytoplasmic lateral location of Ahnak in CD4+ T cells. Collectively, our data suggest that Gm40600 promotes CD4+ T-cell activation to up-regulate the B-cell response via interacting with Ahnak to promote the calcium signalling pathway. The results suggest that targeting Gm40600 may be a means to control CD4+ T-cell-related diseases.
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Affiliation(s)
- Youdi He
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
- Department of NeurologyBeijing Chaoyang HospitalCapital Medical UniversityBeijingChina
| | - Ying Fang
- Department of RheumatologyFirst Hospital of Jilin UniversityChangchunChina
| | - Bing Zhai
- Department of Geriatric HematologyChinese PLA General HospitalBeijingChina
| | - Xiaoling Liu
- Department of DermatologyFirst Medical Centre of ChinesePLA General HospitalBeijingChina
| | - Gaizhi Zhu
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
| | - Shan Zhou
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
| | - Yaqi Xu
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
| | - Xiaoqian Wang
- Staidson (Beijing) Biopharmaceuticals Co. LtdBeijingChina
| | - Wenting Su
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
| | - Renxi Wang
- Beijing Institute of Brain DisordersLaboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
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Ahnak deficiency attenuates high-fat diet-induced fatty liver in mice through FGF21 induction. Exp Mol Med 2021; 53:468-482. [PMID: 33785868 PMCID: PMC8080712 DOI: 10.1038/s12276-021-00573-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 11/27/2020] [Accepted: 12/02/2020] [Indexed: 02/01/2023] Open
Abstract
The AHNAK nucleoprotein has been determined to exert an anti-obesity effect in adipose tissue and further inhibit adipogenic differentiation. In this study, we examined the role of AHNAK in regulating hepatic lipid metabolism to prevent diet-induced fatty liver. Ahnak KO mice have reportedly exhibited reduced fat accumulation in the liver and decreased serum triglyceride (TG) levels when provided with either a normal chow diet or a high-fat diet (HFD). Gene expression profiling was used to identify novel factors that could be modulated by genetic manipulation of the Ahnak gene. The results revealed that fibroblast growth factor 21 (FGF21) was markedly increased in the livers of Ahnak KO mice compared with WT mice fed a HFD. Ahnak knockdown in hepatocytes reportedly prevented excessive lipid accumulation induced by palmitate treatment and was associated with increased secretion of FGF21 and the expression of genes involved in fatty acid oxidation, which are primarily downstream of PPARα. These results indicate that pronounced obesity and hepatic steatosis are attenuated in HFD-fed Ahnak KO mice. This may be attributed, in part, to the induction of FGF21 and regulation of lipid metabolism, which are considered to be involved in increased fatty acid oxidation and reduced lipogenesis in the liver. These findings suggest that targeting AHNAK may have beneficial implications in preventing or treating hepatic steatosis.
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