An alternative spliced RNASEL variant in peripheral blood leukocytes.

An alternative spliced RNASEL variant in peripheral blood leukocytes. Research Abstract Details 

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An alternative spliced RNASEL variant in peripheral blood leukocytes. Abstract Text:

Hanna Rennert,Caren Sadowl,Joshua Edwards,Drew Bantly,Ross J Molinaro,Avi Orr-Urtreger,Adam Bagg,Jonni S Moore,Robert H Silverman,

2-5A-Dependent RNase L is an endoribonuclease that catalyzes RNA degradation and promotes apoptosis during the innate antiviral response in mammalian cells. Prior studies showed that RNASEL is widely expressed and suggested the presence of mRNA species of different sizes but lacked a characterization of these variants. Using RT-PCR, we show that RNASEL is expressed in all human tissues examined, whereas an alternatively generated spliced variant lacking the third exon (RNASEL del_Ex3) is solely expressed in peripheral blood leukocytes (PBL). Quantitative RT-PCR measurements of RNA from different PBL cell types separated by fluorescence activated cell sorting (FACS) showed that complete RNASEL mRNA levels were significantly elevated in granulocytes compared with all other PBL cell types, whereas expression was lowest in CD8(+) T cells. The alternatively spliced RNASEL del_Ex3 transcript was present in all PBL cell types examined but at lower levels than the full-length RNASEL mRNA. The presence of high levels of RNase L protein in granulocytes was confirmed by immunohistochemistry. Our findings are the first to demonstrate the presence of an alternatively spliced RNASEL mRNA and to demonstrate the variable expression of RNase L in different leukocytes. Our results suggest that RNase L plays an important role in granulocytes as an innate immunity enzyme that controls viral infections.

An alternative spliced RNASEL variant in peripheral blood leukocytes. Publishing Authors By Initials

H Rennert,C Sadowl,J Edwards,D Bantly,RJ Molinaro,A Orr-Urtreger,A Bagg,JS Moore,RH Silverman,

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An alternative spliced RNASEL variant in peripheral blood leukocytes. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of interferon & cytokine research : the of

VOLUME: 26

Page Numbers: 820-6

Journal Abbreviation: J. Interferon Cytokine Res.

ISSN: 1079-9907

DAY: 3

MONTH: Nov

YEAR: 2006

An alternative spliced RNASEL variant in peripheral blood leukocytes. Information

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LANGUAGE: eng

NlmUniqueID: 9507088

An alternative spliced RNASEL variant in peripheral blood leukocytes. Keywords Mesh Terms:

KEYWORDS: Virus Diseases

MESH TERMS: immunology

Chemical & Substance for Abstract: An alternative spliced RNASEL variant in peripheral blood leukocytes. Information

Substance Name: pppA(2'p5'A)n-dependent ribonuclease

Registry Number: EC 3.1.26.-

Grant and Affiliation Information for An alternative spliced RNASEL variant in peripheral blood leukocytes.

AFFILIATION: Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, NY 10012, USA. har2006@med.cornell.edu

Country: United States

AGENCY: United States NCI

GRANT: CA1-39432

ACRONYM: CA

MEDLINETA: J Interferon Cytokine Res

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