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Salivary proteomics

Silvia Bosello, Giusy Peluso, Federica Iavarone, Barbara Tolusso, Irene Messana, Gavino Faa, Massimo Castagnola, Gianfranco Ferraccioli
BACKGROUND: In the present study, we investigated whether thymosin β (Tβ) in saliva and in minor salivary glands is differentially expressed in patients with primary Sjögren's syndrome (pSS) and patients with autoimmune diseases (systemic sclerosis [SSc], systemic lupus erythematosus [SLE], and rheumatoid arthritis [RA], with and without sicca syndrome [ss]). METHODS: Saliva specimens of nine patients with pSS, seven with ss/SSc, seven with ss/SLE, seven with ss/RA, seven with SSc, seven with SLE, and seven with RA, as well as ten healthy subjects, were analyzed using a high-performance liquid chromatograph coupled with a mass spectrometer equipped with an electrospray ionization source to investigate the presence and levels of Tβ4, Tβ4 sulfoxide, and Tβ10...
October 6, 2016: Arthritis Research & Therapy
Yasser El-Manzalawy, Elyse E Munoz, Scott E Lindner, Vasant Honavar
Accurate and comprehensive identification of surface exposed proteins (SEPs) in parasites is a key step in developing novel subunit vaccines. However, the reliability of mass spectrometry-based high-throughput methods for proteome-wide mapping of SEPs continues to be limited due to high rates of false positives (i.e., proteins mistakenly identified as surface exposed) as well as false negatives (i.e., SEPs not detected due to low expression or other technical limitations). We propose a framework called PlasmoSEP for the reliable identification of SEPs using a novel semi-supervised learning algorithm that combines SEPs identified by high-throughput experiments and expert annotation of high-throughput data to augment labeled data for training a predictive model...
October 7, 2016: Proteomics
Wim Jonckheere, Wannes Dermauw, Vladimir Zhurov, Nicky Wybouw, Jan Van den Bulcke, Carlos A Villarroel, Robert Greenhalgh, Mike Grbić, Rob C Schuurink, Luc Tirry, Geert Baggerman, Richard M Clark, Merijn R Kant, Bartel Vanholme, Gerben Menschaert, Thomas Van Leeuwen
The two-spotted spider mite Tetranychus urticae is an extremely polyphagous crop pest. Alongside an unparalleled detoxification potential for plant secondary metabolites, it has recently been shown that spider mites can attenuate or even suppress plant defenses. Salivary constituents, notably effectors, have been proposed to play an important role in manipulating plant defenses and might determine the outcome of plant-mite interactions. Here, the proteomic composition of saliva from T. urticae lines adapted to various host plants - bean, maize, soy, and tomato - was analyzed using a custom-developed feeding assay coupled with nano-LC tandem mass spectrometry...
October 4, 2016: Molecular & Cellular Proteomics: MCP
F Ciregia, L Kollipara, L Giusti, R P Zahedi, C Giacomelli, M R Mazzoni, G Giannaccini, P Scarpellini, A Urbani, A Sickmann, A Lucacchini, L Bazzichi
Chronic fatigue syndrome (CFS) is a debilitating and complex disorder characterized by unexplained fatigue not improved by rest. An area of investigation is the likely connection of CFS with defective mitochondrial function. In a previous work, we investigated the proteomic salivary profile in a couple of monozygotic twins discordant for CFS. Following this work, we analyzed mitochondrial proteins in the same couple of twins. Nano-liquid chromatography electrospray ionization mass spectrometry (nano-LC-MS) was used to study the mitochondria extracted from platelets of the twins...
September 27, 2016: Translational Psychiatry
Daniel Belstrøm, Rosa R Jersie-Christensen, David Lyon, Christian Damgaard, Lars J Jensen, Palle Holmstrup, Jesper V Olsen
BACKGROUND: The composition of the salivary microbiota has been reported to differentiate between patients with periodontitis, dental caries and orally healthy individuals. To identify characteristics of diseased and healthy saliva we thus wanted to compare saliva metaproteomes from patients with periodontitis and dental caries to healthy individuals. METHODS: Stimulated saliva samples were collected from 10 patients with periodontitis, 10 patients with dental caries and 10 orally healthy individuals...
2016: PeerJ
Benjarat Phattanawiboon, Narissara Jariyapan, Chonlada Mano, Sittiruk Roytrakul, Atchara Paemanee, Sriwatapron Sor-Suwan, Patchara Sriwichai, Atiporn Saeung, Paul A Bates
Understanding changes in mosquito salivary proteins during the time that sporozoite maturation occurs and after blood feeding may give information regarding the roles of salivary proteins during the malarial transmission. Anopheles dissidens (formerly Anopheles barbirostris species A1) is a potential vector of Plasmodium vivax in Thailand. In this study, analyses of the proteomic profiles of female An. dissidens salivary glands during adult development and after blood feeding were carried out using two-dimensional gel electrophoresis coupled with nano-liquid chromatography-mass spectrometry...
2016: PloS One
Ritu Rawal, Sonam Vijay, Kavita Kadian, Jagbir Singh, Veena Pande, Arun Sharma
In order to understand the importance of functional proteins in mosquito behavior, following blood meal, a baseline proteomic dataset is essential for providing insights into the physiology of blood feeding. Therefore, in this study as first step, in solution and 1-D electrophoresis digestion approach combined with tandem mass spectrometry (nano LC-MS/MS) and computational bioinformatics for data mining was used to prepare a baseline proteomic catalogue of salivary gland proteins of sugar fed An. culicifacies mosquitoes...
2016: PloS One
Yuko Ogawa, Masafumi Tsujimoto, Ryohei Yanoshita
Exosomes are small extracellular vesicles containing microRNAs and mRNAs that are produced by various types of cells. We previously used ultrafiltration and size-exclusion chromatography to isolate two types of human salivary exosomes (exosomes I, II) that are different in size and proteomes. We showed that salivary exosomes contain large repertoires of small RNAs. However, precise information regarding long RNAs in salivary exosomes has not been fully determined. In this study, we investigated the compositions of protein-coding RNAs (pcRNAs) and long non-protein-coding RNAs (lncRNAs) of exosome I, exosome II and whole saliva (WS) by next-generation sequencing technology...
2016: Biological & Pharmaceutical Bulletin
Margarita Villar, Vladimir López, Nieves Ayllón, Alejandro Cabezas-Cruz, Juan A López, Jesús Vázquez, Pilar Alberdi, José de la Fuente
BACKGROUND: The intracellular bacteria Anaplasma phagocytophilum are emerging zoonotic pathogens affecting human and animal health, and a good model for the study of tick-host-pathogen interactions. This tick-borne pathogen is transmitted by Ixodes scapularis in the United States where it causes human granulocytic anaplasmosis. Tick midguts and salivary glands play a major role during tick feeding and development, and in pathogen acquisition, multiplication and transmission. Vertebrate host proteins are found in tick midguts after feeding and have been described in the salivary glands of fed and unfed ticks, suggesting a role for these proteins during tick feeding and development...
2016: Parasites & Vectors
Henry M Kariithi, Sjef Boeren, Edwin K Murungi, Just M Vlak, Adly M M Abd-Alla
BACKGROUND: Glossina m. morsitans is the primary vector of the Trypanosoma brucei group, one of the causative agents of African trypanosomoses. The parasites undergo metacyclogenesis, i.e. transformation into the mammalian-infective metacyclic trypomastigote (MT) parasites, in the salivary glands (SGs) of the tsetse vector. Since the MT-parasites are largely uncultivable in vitro, information on the molecular processes that facilitate metacyclogenesis is scanty. METHODS: To bridge this knowledge gap, we employed tandem mass spectrometry to investigate protein expression modulations in parasitized (T...
2016: Parasites & Vectors
Danielle Resende Camisasca, Lorena da Rós Gonçalves, Márcia Regina Soares, Vanessa Sandim, Fábio César Sousa Nogueira, Carlos Henrique Saraiva Garcia, Rodrigo Santana, Silvia Paula de Oliveira, Luisa Aguirre Buexm, Paulo Antônio Silvestre de Faria, Fernando Luiz Dias, Denise de Abreu Pereira, Russolina B Zingali, Gilda Alves, Simone Queiroz Chaves Lourenço
BACKGROUND: Oral leukoplakia is the most common potentially malignant disorder in the oral cavity and can precede carcinoma. This study aimed to identify possible oral leukoplakia salivary biomarkers. METHODS: Unstimulated saliva was collected from participants and protein concentration was determined. Proteins were then precipitated with cold acetone and separated using 2DE over a pH range of 3-10. Spot demarcation and matching were performed and protein identification was done through MS analysis...
July 29, 2016: Journal of Proteomics
Arvind Babu Rajendra Santosh, Thaon Jones, John Harvey
Biomarkers are broadly classified as genomic, proteomic, or metabolomic. Molecular biology and oncology research studies on oral cancer biomarkers focus on identifying key biological molecules or markers that could be linked to cancer development, risk assessment, screening, recurrence prediction, indicating prognosis, indicating invasion/metastasis and monitoring therapeutic responses of cancer. Cluster of differentiation factor 34 is a salivary biomarker that can identify recurrence potential of oral squamous cell carcinoma (OSCC)...
April 2016: Journal of Cancer Research and Therapeutics
Stergios Katsiougiannis, David T W Wong
One of the main characteristics of primary Sjögren's syndrome (pSS) is chronic dysfunction and destruction of the salivary and lacrimal glands; their secretory biofluids should reflect the glandular biological status. Saliva is a heterogeneous biofluid comprised of biomolecules and omics constituents that are altered in response to various diseases. Scientific effort has evaluated saliva proteome to diagnose, monitor, and prognosticate pSS. This article reviews the recent advances in salivary proteomics in the context of pSS, highlighting the most significant and promising findings...
August 2016: Rheumatic Diseases Clinics of North America
Heinz-Dieter H-D Müller, Barbara B Cvikl, Adrian A Lussi, Reinhard R Gruber
BACKGROUND: Whole saliva provokes a substantial pro-inflammatory response in gingival fibroblasts. This raises the question whether the salivary pellet, which is used for diagnostic purposes, also has a pro-inflammatory capacity and, if yes, what the underlying mechanisms at the molecular level are. METHODS: We examined the ability of extensively washed salivary pellets to provoke the expression of chemokines in gingival fibroblasts by real-time polymerase chain reaction and immunoassays...
2016: BMC Oral Health
Brooke L Whitelaw, Jan M Strugnell, Pierre Faou, Rute R da Fonseca, Nathan E Hall, Mark Norman, Julian Finn, Ira R Cooke
This study provides comprehensive proteomic profiles from the venom producing posterior salivary glands of octopus (superorder Octopodiformes) species. A combined transcriptomic and proteomic approach was used to identify 1703 proteins from the posterior salivary gland of the southern blue-ringed octopus, Hapalochlaena maculosa and 1300 proteins from the posterior salivary gland of the southern sand octopus, Octopus kaurna. The two proteomes were broadly similar; clustering of proteins into orthogroups revealed 937 that were shared between species...
September 2, 2016: Journal of Proteome Research
Janett Carmen Luzmila Riega-Torres, Antonio Jaime Villarreal-Gonzalez, Luis Ángel Ceceñas-Falcon, Julio Cesar Salas-Alanis
Sjögren's syndrome is a chronic autoimmune disease whose main clinical manifestation is oral dryness (xerostomia) and ocular dryness (xerophthalmia). It is characterized by progressive mononuclear infiltration of the exocrine glands and can affect a variety of organ systems. The prevalence of primary Sjögren's syndrome varies from 0.01 up to 4.8%; this variability reflects differences in definition, application of diagnostic criteria, and geographic differences in age groups. The etiology of primary Sjögren's syndrome is unknown, but the interaction between genetic and environmental factors (viruses, hormones, vitamins, stress) is important...
May 2016: Gaceta Médica de México
Jinghua Yang, Yuan Zhou, Luxia Zhang, Nehal Shah, Cheng Jin, Robert J Palmer, John O Cisar
UNLABELLED: The growth of the oral commensal Streptococcus gordonii in saliva may depend on a number of glycoside hydrolases (GHs), including three cell wall-anchored proteins that are homologs of pneumococcal β-galactosidase (BgaA), β-N-acetylglucosaminidase (StrH), and endo-β-N-acetylglucosaminidase D (EndoD). In the present study, we introduced unmarked in-frame deletions into the corresponding genes of S. gordonii DL1, verified the presence (or absence) of the encoded proteins on the resulting mutant strains, and compared these strains with wild-type strain DL1 for growth and glycan foraging in saliva...
September 1, 2016: Applied and Environmental Microbiology
Purushottam R Lomate, Bryony C Bonning
Stink bugs negatively impact numerous plant species of agricultural and horticultural importance. While efforts to develop effective control measures are underway, the unique digestive physiology of these pests presents a significant hurdle for either protein- or nucleotide-based management options. Here we report the comparative biochemical and proteomic characterization of proteases and nucleases from the gut, salivary gland and saliva of the southern green stink bug, Nezara viridula. The pH optimum for protease activity was acidic (5 to 6) in the gut with the primary proteases being cysteine proteases, and alkaline (8 to 9) in the saliva and salivary gland with the primary proteases being serine proteases...
2016: Scientific Reports
Chin Soon Chee, Khai Meng Chang, Mun Fai Loke, Voon Pei Angela Loo, Visvaraja Subrayan
AIM/HYPOTHESIS: The aim of our study was to characterize the human salivary proteome and determine the changes in protein expression in two different stages of diabetic retinopathy with type-2 diabetes mellitus: (1) with non-proliferative diabetic retinopathy (NPDR) and (2) with proliferative diabetic retinopathy (PDR). Type-2 diabetes mellitus without diabetic retinopathy (XDR) was designated as control. METHOD: In this study, 45 saliva samples were collected (15 samples from XDR control group, 15 samples from NPDR disease group and 15 samples from PDR disease group)...
2016: PeerJ
Zohaib Khurshid, Sana Zohaib, Shariq Najeeb, Muhammad Sohail Zafar, Paul D Slowey, Khalid Almas
There has been a rapid growth in the interest and adaptation of saliva as a diagnostic specimen over the last decade, and in the last few years in particular, there have been major developments involving the application of saliva as a clinically relevant specimen. Saliva provides a "window" into the oral and systemic health of an individual, and like other bodily fluids, saliva can be analyzed and studied to diagnose diseases. With the advent of new, more sensitive technologies to detect smaller concentrations of analytes in saliva relative to blood levels, there have been a number of critical developments in the field that we will describe...
2016: International Journal of Molecular Sciences
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