Enter a sentence, or cut and paste a paragraph

Refine

Refine

Refine to these subject areas:

  • Select All | Select None

Advanced Filters »

Refine

  • Advanced Filters:

  • to

  • Specific Data Sources:

    All Edit

    Select All  |  Select None

Reset filters

Journals Journal of Leukocyte Biology August 2009

Bookmark

Zinc transporter ZIP8 (SLC39A8) and zinc influence IFN-{gamma} expression in activated human T cells

To view this document, you will need to have Adobe Flash Player 10 or above installed.
Please click here to install.

The zinc transporter ZIP8 is highly expressed in T cells derived from human subjects. T cell ZIP8 expression was markedly up-regulated upon in vitro activation. T cells collected from human subjects who had received oral zinc supplementation (15 mg/day) had higher expression of the activation marker IFN- upon in vitro activation, indicating a potentiating effect of zinc on T cell activation. Similarly, in vitro zinc treatment of T cells along with activation resulted in increased IFN- expression with a maximum effect at 3.1 µM. Knockdown of ZIP8 in T cells by siRNA decreased ZIP8 levels in nonactivated and activated cells and concomitantly reduced secretion of IFN- and perforin, both signatures of activation. Overexpression of ZIP8 by transient transfection caused T cells to exhibit enhanced activation. Confocal microscopy established that ZIP8 is localized to the lysosome where ZIP8 abundance is increased upon activation. Loss of lysosomal labile zinc in response to activation was measured by flow cytometry using a zinc fluorophore. Zinc between 0.8 and 3.1 µM reduced CN phosphatase activity. CN was also inhibited by the CN inhibitor FK506 and ZIP8 overexpression. The results suggest that zinc at low concentrations, through inhibition of CN, sustains phosphorylation of the transcription factor CREB, yielding greater IFN- expression in T cells. ZIP8, through control of zinc transport from the lysosome, may provide a secondary level of IFN- regulation in T cells. Key Words: signal transduction • adaptive immunity • zinc nutrition • nutritional immunity

To view this document, you will need to have Adobe Flash Player 10 or above installed.
Please click here to install.

This is a preview. The total pages displayed will be limited.

Rent for $0.99 FREE

Login

It seems like you have an account, please login to rent this article

Forgot your password?

Don't have an account yet? Sign up now!

To view the full-text of this article, sign up for a free DeepDyve account below.

A free Basic account also comes with
3 free rentals to help get you started.

It seems like you have an account, please login to rent this article

Just 30 seconds to go! Please check your inbox for a confirmation email to activate your account, then start using your 3 FREE rentals.

Learn more Existing user? Login here

Article Details
Aydemir, Tolunay B.; Liuzzi, Juan P.; McClellan, Steve; Cousins, Robert J.
Journal of Leukocyte Biology , Volume 86 (2): 337
Fed of American Socs for Experimental Biology – Aug 1, 2009
More Info

More Like This Article

View All dataSource[]=aspet&dataSource[]=aacc&dataSource[]=aacr&dataSource[]=aip&dataSource[]=ajnr&dataSource[]=appi_book&dataSource[]=appi_journal&dataSource[]=asip&dataSource[]=asm&dataSource[]=asn&dataSource[]=aspb&dataSource[]=annual_reviews&dataSource[]=arxiv&dataSource[]=acm&dataSource[]=clinical_trials&dataSource[]=dailymed&dataSource[]=degruyter&dataSource[]=elsevier&dataSource[]=emerald&dataSource[]=emea&dataSource[]=epo&dataSource[]=faseb&dataSource[]=gsa&dataSource[]=health_affairs&dataSource[]=hindawi&dataSource[]=imedpub&dataSource[]=iucr&dataSource[]=iospress&dataSource[]=jbjs&dataSource[]=mesharpe&dataSource[]=mary_ann_liebert&dataSource[]=medline&dataSource[]=mit_press&dataSource[]=oxford&dataSource[]=pnas&dataSource[]=psyc_articles&dataSource[]=psyc_books&dataSource[]=psyc_critiques&dataSource[]=plos_journal&dataSource[]=pubmed_central&dataSource[]=rsna&dataSource[]=rockefeller&dataSource[]=sage&dataSource[]=spie&dataSource[]=springer&dataSource[]=taylor_francis&dataSource[]=aps&dataSource[]=the_scientist&dataSource[]=uc_press&dataSource[]=uspto_abstract&dataSource[]=pct

Browse: Subject Areas | Journals | Publishers

Bookmark an Article

To bookmark an article, please log in first, or sign up for a DeepDyve account if you don't already have one.

OK

Subscribe to Journal Email Alerts

To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don't already have one.

OK