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Rey-Jurado E, Pizarro-Ortega MS, Kalergis AM. Insights on the crosstalk between dendritic cells and helper T cells in novel genetic etiology for mendelian susceptible mycobacterial disease. Cell Mol Immunol 2018; 15:1091-1094. [PMID: 30405151 DOI: 10.1038/s41423-018-0177-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 10/13/2018] [Indexed: 11/09/2022] Open
Affiliation(s)
- Emma Rey-Jurado
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 8330644, Chile
| | - Magdalena S Pizarro-Ortega
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 8330644, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 8330644, Chile. .,Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, 8330644, Chile.
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Rawat KD, Chahar M, Srivastava N, Gupta UD, Natrajan M, Katoch VM, Katoch K, Chauhan DS. Expression profile of CXCL12 chemokine during M. tuberculosis infection with different therapeutic interventions in guinea pig. Indian J Tuberc 2018; 65:152-158. [PMID: 29579430 DOI: 10.1016/j.ijtb.2017.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/04/2017] [Indexed: 10/19/2022]
Abstract
Mycobacterium indicus pranii (MIP) already established as an immune-modulator in mycobacterial infections generates immune response by acting on CXC chemokines. In the present study, the immunomodulatory effect of MIP in conjunction with chemotherapy against M.tb infection was evaluated by colony forming units (CFUs) following aerosol infection to guinea pig and by measuring CXCL12 chemokine expression using q-PCR and in situ RT-PCR. Different experimental groups included, infection (Rv), immunoprophylaxis (RvMw), chemotherapy (RvCh) and combination of immunoprophylaxis+chemotherapy (RvChMw) group and normal healthy (NH) group. In the combination of immunoprophylaxis+chemotherapy (RvChMw) group, the CFU counts reduced significantly (p<0.001) at 4th week of infection as compared to other treated groups (RvMw and RvCh group). The expression of CXCL12 was recorded in all the treated groups of animals. The study demonstrated suppressed expression of CXCL 12 in both immunoprophylaxis as well as chemotherapy groups (6th and 8th week) that become elevated in immunoprophylaxis plus chemotherapy group (10th week), at which time point no CFUs were detected in RvCh and RvChMw group. The findings indicate that the expression of CXCL12 is associated with good response to anti - tubercular treatment. Thus, prior immunization with MIP appears to show good immunomodulatory effect to release CXCL12 chemokine during infection and also correlates with enhanced effect to chemotherapy.
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Affiliation(s)
- Krishan Dutta Rawat
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India
| | - Mamta Chahar
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India
| | - Nalini Srivastava
- Department of Biochemistry, Jiwaji University, Gwalior 474 001, MP, India
| | - U D Gupta
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India
| | - M Natrajan
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India
| | - V M Katoch
- Former Director-General (ICMR) and Secretary, Department of Health Research, Indian Council of Medical Research, Ansari Nagar, New Delhi 110 029, India
| | - Kiran Katoch
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India
| | - D S Chauhan
- National JALMA Institute for Leprosy and Other Mycobacterial Diseases (ICMR) Tajganj, Agra 282 001, UP, India.
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Parlato S, Chiacchio T, Salerno D, Petrone L, Castiello L, Romagnoli G, Canini I, Goletti D, Gabriele L. Impaired IFN-α-mediated signal in dendritic cells differentiates active from latent tuberculosis. PLoS One 2018; 13:e0189477. [PMID: 29320502 PMCID: PMC5761858 DOI: 10.1371/journal.pone.0189477] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 11/27/2017] [Indexed: 12/12/2022] Open
Abstract
Individuals exposed to Mycobacterium tuberculosis (Mtb) may be infected and remain for the entire life in this condition defined as latent tuberculosis infection (LTBI) or develop active tuberculosis (TB). Among the multiple factors governing the outcome of the infection, dendritic cells (DCs) play a major role in dictating antibacterial immunity. However, current knowledge on the role of the diverse components of human DCs in shaping specific T-cell response during Mtb infection is limited. In this study, we performed a comparative evaluation of peripheral blood circulating DC subsets as well as of monocyte-derived Interferon-α DCs (IFN-DCs) from patients with active TB, subjects with LTBI and healthy donors (HD). The proportion of circulating myeloid BDCA3+ DCs (mDC2) and plasmacytoid CD123+ DCs (pDCs) declined significantly in active TB patients compared to HD, whereas the same subsets displayed a remarkable activation in LTBI subjects. Simultaneously, the differentiation of IFN-DCs from active TB patients resulted profoundly impaired compared to those from LTBI and HD individuals. Importantly, the altered developmental trait of IFN-DCs from active TB patients was associated with down-modulation of IFN-linked genes, marked changes in molecular signaling conveying antigen (Ag) presentation and full inability to induce Ag-specific T cell response. Thus, these data reveal an important role of IFN-α in determining the induction of Mtb-specific immunity.
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Affiliation(s)
- Stefania Parlato
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Teresa Chiacchio
- Translational Research Unit, Department of Epidemiology and Preclinical Research, "L. Spallanzani" National Institute for Infectious Diseases (INMI) IRCCS, Rome, Italy
| | - Debora Salerno
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - Linda Petrone
- Translational Research Unit, Department of Epidemiology and Preclinical Research, "L. Spallanzani" National Institute for Infectious Diseases (INMI) IRCCS, Rome, Italy
| | | | - Giulia Romagnoli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Irene Canini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Delia Goletti
- Translational Research Unit, Department of Epidemiology and Preclinical Research, "L. Spallanzani" National Institute for Infectious Diseases (INMI) IRCCS, Rome, Italy
- * E-mail: (LG); (DG)
| | - Lucia Gabriele
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
- * E-mail: (LG); (DG)
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Gupta M, Shin DM, Ramakrishna L, Goussetis DJ, Platanias LC, Xiong H, Morse HC, Ozato K. IRF8 directs stress-induced autophagy in macrophages and promotes clearance of Listeria monocytogenes. Nat Commun 2015; 6:6379. [PMID: 25775030 PMCID: PMC4363081 DOI: 10.1038/ncomms7379] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 01/23/2015] [Indexed: 12/11/2022] Open
Abstract
Autophagy, activated by many stresses, plays a critical role in innate immune responses. Here we show that Interferon Regulatory Factor 8 (IRF8) is required for expression of autophagy-related genes in dendritic cells. Furthermore in macrophages, IRF8 is induced by multiple autophagy-inducing stresses, including IFNγ and toll like receptor stimulation, bacterial infection, starvation and by macrophage colony-stimulating factor. IRF8 directly activates many genes involved in various steps of autophagy, promoting autophagosome formation and lysosomal fusion. Consequently, Irf8-/- macrophages are deficient in autophagic activity, and excessively accumulate SQSTM1 and ubiquitin-bound proteins. We show that clearance of Listeria monocytogenes in macrophages requires IRF8-dependent activation of autophagy genes and subsequent autophagic capturing and degradation of Listeria antigens. These processes are defective in Irf8-/- macrophages where uninhibited bacterial growth ensues. Together, these data suggest that IRF8 is a major autophagy regulator in macrophages, essential for macrophage maturation, survival and innate immune responses.
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Affiliation(s)
- Monica Gupta
- Program in Genomics of Differentiation, NICHD, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Dong-Mi Shin
- 1] Laboratory of Immunopathology, NIAID, National Institutes of Health, 5640 Fishers Lane, Room 1421, Rockville, Maryland 20852, USA [2] Department of Food and Nutrition, Seoul National University, Seoul 151-742, Korea
| | - Lakshmi Ramakrishna
- Program in Genomics of Differentiation, NICHD, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Dennis J Goussetis
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois 60611, USA
| | - Leonidas C Platanias
- 1] Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois 60611, USA [2] Division of Hematology-Oncology, Jesse Brown VA Medical Center, Chicago, Illinois 60612, USA
| | - Huabao Xiong
- Immunology Institute, Mount Sinai School of Medicine, New York, New York 10029, USA
| | - Herbert C Morse
- Laboratory of Immunopathology, NIAID, National Institutes of Health, 5640 Fishers Lane, Room 1421, Rockville, Maryland 20852, USA
| | - Keiko Ozato
- Program in Genomics of Differentiation, NICHD, National Institutes of Health, Bethesda, Maryland 20892, USA
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Mattei F, Schiavoni G, De Ninno A, Lucarini V, Sestili P, Sistigu A, Fragale A, Sanchez M, Spada M, Gerardino A, Belardelli F, Businaro L, Gabriele L. A multidisciplinary study usingin vivotumor models and microfluidic cell-on-chip approach to explore the cross-talk between cancer and immune cells. J Immunotoxicol 2014; 11:337-46. [DOI: 10.3109/1547691x.2014.891677] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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