当前位置： SCI文献检索 > JOURNAL OF CANCER RESEARCH AND CLINICAL ONCOLOGY期刊下所有文献 > Morphological and molecular features of oral fluid-derived exosomes: oral cancer patients versus healthy individuals.

Morphological and molecular features of oral fluid-derived exosomes: oral cancer patients versus healthy individuals.

Abstract：

PURPOSE:Oral cancer (OC) patients are at high risk to develop recurrent disease or secondary primary cancers with no available biomarkers to detect these events until a visible lesion is readily present and diagnosed by biopsy. Exosomes secreted by cancer cells are involved in tumor growth, invasion and metastasis. We aimed to determine morphological and molecular differences between oral fluid (OF)-derived exosomes of OC patients and those isolated from healthy individuals (HI). METHODS:OF from OC patients (n = 36) and HI (n = 25) was initially assessed by nanoparticle tracking analysis (NTA). Following ultracentrifugation, exosomal pellets of OC patients and HI were morphologically examined by transmission electron microscopy and atomic force microscopy (AFM). Enzyme-linked immunosorbent assay (ELISA) and western blotting (WB) were used to analyze the expression of exosomal markers--CD9, CD81 and CD63. RESULTS:NTA showed that OC samples of OF had a significantly higher concentration of nanoparticles/ml (p = 0.01) and modal nanoparticle size (p = 0.002) compared to HI. The difference in size was structurally highlighted by AFM three-dimensional images applied on exosomal pellets. ELISA and WB showed differential expression of exosomal markers in OC exosomes compared to HI: lower expression of CD81 and CD9 in contrast to a higher expression of CD63 (~53 kDa). CONCLUSIONS:OF-derived exosomes from OC patients differ both morphologically and molecularly from exosomes present in HI. This study is a baseline that provides a starting point for finding exosomal biomarkers for early detection of malignant changes in high-risk patients without overt clinical signs/lesions.

journal_name

J Cancer Res Clin Oncol

journal_title

Journal of cancer research and clinical oncology

authors

Zlotogorski-Hurvitz A,Dayan D,Chaushu G,Salo T,Vered M

doi

10.1007/s00432-015-2005-3

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

101-10

issue

1

eissn

0171-5216

issn

1432-1335

pii

10.1007/s00432-015-2005-3

journal_volume

142

pub_type

杂志文章

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