Immunomodulation in Human Dendritic Cells Leads to Induction of Interferon-Gamma Production by Leishmania donovani Derived KMP-11 Antigen via Activation of NF-κB in Indian Kala-Azar Patients
Joint Authors
Singh, Anurag
Pandey, K.
Narayan, Shyam
Singh, S. K.
Yadav, Anupam
Bimal, Sanjiva
Kumar, Vikash
Kumar, Anil
Das, Pradeep
Amit, Ajay
Rabidas, Vidyanand
Chaudhary, Rajesh
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-22
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Dendritic cells (DCs) and macrophages (MΦs) are well-known antigen presenting cells with an ability to produce IL-12 which indicates that they have potential of directing acquired immunity toward a Th1-biased response.
The aim of this study was to examine the effect of Leishmania specific KMP-11 antigen through comparison of immune responses after presentation by DCs and MΦs to T cells in Indian patients with VL.
Patients with DCS and MΦs were directed against a purified Leishmania donovani antigen (KMP-11) and phytohaemagglutinin (PHA).
The cytokines (IL-12, IL-10, and TGF-β) producing abilities of the DCs and MΦs against these antigens were determined by flow cytometry.
The transcription factor (NF-κB) and T-cell cytokine support (IFN-γ, IL-10), which could be significant in effector immune function, were also determined.
Severe hindrance in the immune protection due to Leishmania parasites, as revealed by decreased expression of IL-12 and upregulation of IL-10 and TGF-β expression in the MΦs compared to DCs, occurred in VL patients.
The production of IL-12 in response to L.
donovani KMP-11 antigen was increased in DCs which was reduced in MΦs of VL patients.
In contrast, the presentation of KMP-11 antigen by DCs to T-lymphocytes in VL patients significantly increased the IFN-γ produced by these immune cells, whereas the levels of IL-10 were significantly elevated after presentation of KMP-11antigen by MΦs.
The VL patients were observed with severely dysfunctional MΦs in terms of NF-κB activity that could be recovered only after stimulation of DCs with L.
donovani KMP-11 antigen.
Immunologically the better competitiveness of KMP-11 antigen through a dendritic cell delivery system may be used to revert T-cell anergy, and control strategy can be designed accordingly against kala-azar.
American Psychological Association (APA)
Chaudhary, Rajesh& Amit, Ajay& Yadav, Anupam& Singh, Anurag& Kumar, Vikash& Singh, S. K.…[et al.]. 2014. Immunomodulation in Human Dendritic Cells Leads to Induction of Interferon-Gamma Production by Leishmania donovani Derived KMP-11 Antigen via Activation of NF-κB in Indian Kala-Azar Patients. BioMed Research International،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-510493
Modern Language Association (MLA)
Chaudhary, Rajesh…[et al.]. Immunomodulation in Human Dendritic Cells Leads to Induction of Interferon-Gamma Production by Leishmania donovani Derived KMP-11 Antigen via Activation of NF-κB in Indian Kala-Azar Patients. BioMed Research International No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-510493
American Medical Association (AMA)
Chaudhary, Rajesh& Amit, Ajay& Yadav, Anupam& Singh, Anurag& Kumar, Vikash& Singh, S. K.…[et al.]. Immunomodulation in Human Dendritic Cells Leads to Induction of Interferon-Gamma Production by Leishmania donovani Derived KMP-11 Antigen via Activation of NF-κB in Indian Kala-Azar Patients. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-510493
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510493