alexa
Reach Us +1-504-608-2390
Cross-talk Between CD8+ T And NK Cells: Fine-tuning Of Anti-tumor Immune Response | 19550
ISSN: 2155-9899

Journal of Clinical & Cellular Immunology
Open Access

Like us on:

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

3rd International Conference and Exhibition on Clinical & Cellular Immunology

Anil Shanker, Shawn J Goodwin, Lino Costa, Alexander Terekhov, Menaka C Thounaojam, William H Hofmeister and Roman V Uzhachenko
ScientificTracks Abstracts: J Clin Cell Immunol
DOI: 10.4172/2155-9899.S1.017
Abstract
Local tumor antigen-specific T cell-NK cell collaboration is indispensable for the elimination of tumor cells, including antigen-deficient tumor escape variants before metastasis. While mechanistic details are available for the innate instruction of the T cell responses, little is known for the adaptive control of NK cell activity. We observed in a mouse model of mastocytoma expressing a self tumor antigen P1A that effector CD8+ T cells provided a necessary ?help? to dormant NK cells in eliciting their antitumor effector function. Bioluminescence imaging of mastocytoma tumors following adoptive transfer of P1A-specific T cells in RAG-/- and RAG-/-γc-/- mice showed that NK cell anti-tumor activity requires cytolytic T cells, whereas T cells can function independent of NK cells. In 2D and 3D co-culture systems, we observed that PMA/ionomycin-stimulated CD8+ T cells form multiple contacts with naive NK lymphocytes. Data show that NK cells interacting with activated CD8+ T cells show an up-regulation of CD25 and CD69 expression mediated by intercellular contacts, and activation of NKG2D receptors and Stat2, Stat6, Jak1, Jak3, Tyk2, and PTEN signaling molecules with a decrease in the phosphorylation of Stat1, PKB/Akt, SAPK/JNK, p38. On the other hand, interacting NK cells down-regulate CD25 molecule expression on CD8+ T cells and promote differentiation of central-memory CD44+CD62L+ T cells. CD8+ T cells display an elevation in the phosphorylation of Stat1 and down-regulation of Stat5 with stimulated PKB/Akt, Lck, mTOR, and p42/p44. Moreover, significant changes in the cytosolic and mitochondrial Ca2+, production of mitochondrial ROS, mitochondrial membrane potential, mitochondrial permeability transition pore, and synthesis of nitric oxide and non-protein thiols (mostly, reduced glutathion) were observed in a reciprocal T cell-NK cell interaction. These results highlight the importance of mitochondrial activity in the re-modeling of activation signaling and memory differentiation of interacting CD8 T cells and NK cells. These results will help refine cancer immunotherapeutic strategies.
Biography
Anil Shanker is an Associate Professor in the Department of Biochemistry and Cancer Biology at Meharry Medical College. He is also a member of Vanderbilt-Ingram Comprehensive Cancer Center at Vanderbilt University. Dr. Shanker obtained his PhD from Banaras Hindu University in 1999. He performed his postdoctoral studies at the CNRS/INSERM Center of Immunology, Marseille, France and the National Cancer Institute, Frederick, Maryland. His pioneering work with solid tumor models demonstrated that activated CD8 T cells provided a necessary ?help? to dormant NK cells in eliciting their antitumor function. His laboratory is currently focused on understanding mechanisms of functional cross-talk between T cells and NK cells in tumor models. He is also dissecting the mechanisms of immunomodulation by the proteasome inhibitor bortezomib and Notch ligand DLL1 in adoptive T cell/NK cell transfer settings in an effort to design novel combinatorial immune strategies in cancer patients. He has over 35 research publications to his credit in cancer and immunology journals.
image PDF   |   image HTML
 

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2018-19
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri and Aquaculture Journals

Dr. Krish

[email protected]

+1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001Extn: 9040

Clinical Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

General Science

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

streamtajm

[email protected]

1-702-714-7001Extn: 9042

 
© 2008- 2018 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version