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Series GSE7224 Query DataSets for GSE7224
Status Public on Dec 31, 2007
Title Gene expression in tonsil and oral epithelia
Organism Homo sapiens
Experiment type Expression profiling by array
Summary To study characteristics of the orapharyngeal epithelia which may influence susceptibility or resistance to HIV, we performed microarray analysis of the tonsil and gingival epithelium.Tonsil epithelium has been implicated in HIV pathogenesis, but its role in oral transmission remains controversial. We performed microarray analysis of Laser Capture Microdissected tonsil and gingival epithelium. Our data revealed that genes related to immune functions such as antibody production and antigen processing were increasingly expressed in tonsil compared to the epithelium of another oro-pharyngeal site, gingival epithelium. Importantly, tonsil epithelium highly expressed genes associated with HIV entrapment and/or transmission, including the HIV co-receptor CXCR4 and the potential HIV binding molecules, FcRγIII, complement receptor 2, and various complement components. This increased expression of molecules involved in viral recognition, binding and entry may favor virus-epithelium interaction in an environment with reduced innate anti-viral mechanisms. Specifically, secretory leukocyte protease inhibitor, an innate molecule with anti-HIV activity, was minimal in the tonsil epithelium, in contrast to oral mucosa. Collectively, our data suggest that increased expression of molecules associated with HIV binding and entry coupled with decreased innate anti-viral factors may render the tonsil a potential site for oral transmission.
Keywords: Cross sectional
 
Overall design To study characteristics of the orapharyngeal epithelia which may influence susceptibility or resistance to HIV, we performed microarray analysis of the tonsil and gingival epithelium.

Human palatine tonsils were obtained from routine therapeutic tonsillectomies (sleep apnea and non-tonsillitis) performed on otherwise healthy adults at the George Washington University Hospital with informed consent (IRB #099920). Gingival tissues were collected from healthy sites with probing depths < 3mm, with no clinical evidence of inflammation during routine therapeutic periodontal surgery at the University of Maryland, Department of Periodontics, with informed consent (IRB#1201211). Tissues were immediately snap frozen for the microarray studies. CM performed immediately at 10x magnification, using a Leica AS LMD system (Leica Microsystems). Areas unequivocally identified as epithelium were outlined , laser-dissected and captured and RNA from the tissues isolated. Preparation of biotin-labeled cRNA, hybridization, and scanning were performed according to manufacturer’s two cycle protocol (Affymetrix, Santa Clara, CA). Fluorescence intensity was measured using the Affymetrix GeneChip scanner and GeneChip Operating Software (GCOS, Affymetrix).

Samples GSM173679, GSM173680,GSM173681, GSM173682, GSM173683, GSM173684, GSM173685, GSM173686, GSM173688, GSM173690 were processed togehter as "batch 1", while samples GSM173687 and GSM173689 were processed as "batch 2" together with sample GSM173691 which is a repeat of GSM173690, which was processed for comparison between the two batches.


 
Contributor(s) Moutsopoulos NM, Nares S, Nikitakis N, Rangel Z, Wen J,  Munson P, Sauk J, Wahl SM
Citation(s) 17620369
Submission date Mar 08, 2007
Last update date Jun 22, 2021
Contact name Niki Moutsopoulos
E-mail(s) nmoutsopoulos@dir.nidr.nih.gov
Organization name NIDCR
Street address 30 convent Dr
City Bethesda
ZIP/Postal code 20892
Country USA
 
Platforms (1)
GPL570 [HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array
Samples (13)
GSM173679 Gingival epithelium 1
GSM173680 Gingival epithelium 2
GSM173681 Gingival epithelium 3
Relations
BioProject PRJNA98397

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Supplementary file Size Download File type/resource
GSE7224_RAW.tar 64.2 Mb (http)(custom) TAR (of CEL)

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