alexa Intrinsic cytotoxicity of natural killer cells to pancreatic islets in vitro
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Naoto Akamura, Bruce A Woda, Anna Tafuri, Dale L Greiner, Craig W Reynolds

Abstract Share this page

BB rats develop spontaneous autoimmune insulin-dependent diabetes mellitus that is similar to human insulin-dependent diabetes. In this study, we used an in vitro islet cell cytotoxicity assay to study the possible role of natural killer (NK) cells and their soluble effector molecules in this disorder. First, the results demonstrated that in vivo treatment of acutely diabetic BB rats with anti-asialogangliosideM1 (an NK cell antiserum) but not with anti-T-lymphocyte antibodies reduces spleen cell cytotoxic activity to islets in vitro. Flow microfluorometry (FMF)-sorting experiments were then used to confirm that the splenic cytotoxic effector cell in acutely diabetic BB rats is a CD8+/CD5- NK cell. Further analysis demonstrated that both FMF-sorted NK cell populations from Wistar-Furth rats and unfractionated spleen cells from athymic nu/nu rats with high intrinsic NK cell activity also exhibit high islet cell cytotoxic activity in vitro. Finally, we found that the kinetics and differential cytotoxic activity of NK cells toward islets in vitro could be mimicked by NK cell culture supernatants containing high levels of NK cytotoxic factor (NKCF). The islet cytotoxic activity of these culture supernatants was specifically inhibited by the addition of anti-NKCF monoclonal antibody. These results demonstrate that NK cells from diabetic and nondiabetic rats are cytotoxic to islet cells in vitro. They further suggest that this cytotoxic effect may be mediated in part through the production and release of soluble factors such as NKCF.

This article was published in Diabetes and referenced in Journal of Diabetes & Metabolism

Relevant Expert PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords