Identification of αB-Crystallin, a Biomarker of Renal Cell Carcinoma by SELDI-TOF MS

2008 ◽  
Vol 23 (1) ◽  
pp. 48-53 ◽  
Author(s):  
J. Holcakova ◽  
L. Hernychova ◽  
P. Bouchal ◽  
K. Brozkova ◽  
J. Zaloudik ◽  
...  
Keyword(s):  
Renal Cell ◽  
Human Cancer ◽  
Biological Fluids ◽  
Serum Markers ◽  
Circulating Biomarkers ◽  
Surface Enhanced ◽  
Αb Crystallin ◽  
Specific Proteins ◽  
Low Levels ◽  
Cancer Tissues

Spectrometric-based surface-enhanced laser desorption/ionization ProteinChip (SELDI-TOF) facilitates rapid and easy analysis of protein mixtures and is often exploited to define potential diagnostic markers from sera. However, SELDI-TOF is a relatively insensitive technique and unable to detect circulating proteins at low levels even if they are differentially expressed in cancer patients. Therefore, we applied this technology to study tissues from renal cell carcinomas (RCC) in comparison to healthy controls. We found that different biomarkers are identified from tissues than those previously identified in serum, and that serum markers are often not produced by the tumors themselves at detectable levels, reflecting the nonspecific nature of many circulating biomarkers. We detected and characterized αB-crystallin as an overexpressed protein in RCC tissues and showed differential expression by immunohistochemistry. We conclude that SELDI-TOF is more useful for the identification of biomarkers that are synthesized by diseased tissues than for the identification of serum biomarkers and identifies a separate set of markers. We suggest that SELDI-TOF should be used to screen human cancer tissues to identify potential tissue-specific proteins and simpler and more sensitive techniques can then be applied to determine their validity as biomarkers in biological fluids.

scholarly journals Circulating Biomarkers of Colorectal Cancer (CRC)—Their Utility in Diagnosis and Prognosis

2021 ◽  
Vol 10 (11) ◽  
pp. 2391
Author(s):  
Marta Łukaszewicz-Zając ◽  
Barbara Mroczko
Keyword(s):  
Colorectal Cancer ◽  
Inflammatory Mediators ◽  
Colorectal Adenomas ◽  
Global Burden ◽  
Circulating Biomarkers ◽  
Specific Nature ◽  
Diagnosis And Prognosis ◽  
Specific Proteins ◽  
Novel Biomarkers ◽  
Number Of Publications

The global burden of colorectal cancer (CRC) is expected to increase, with 2.2 million new cases and 1.1 million annual deaths by 2030. Therefore, the establishment of novel biomarkers useful in the early diagnosis of CRC is of utmost importance. A number of publications have documented the significance of the overexpression of several specific proteins, such as inflammatory mediators, in CRC progression. However, little is known about the potential utility of these proteins as circulating blood tumor biomarkers of CRC. Therefore, in the present review we report the results of our previous original studies as well as the findings of other authors who investigated whether inflammatory mediators might be used as novel biomarkers in the diagnosis and prognosis of CRC. Our study revealed that among all of the tested proteins, serum M-CSF, CXCL-8, IL-6 and TIMP-1 have the greatest value in the diagnosis and progression of CRC. Serum TIMP-1 is useful in differentiating between CRC and colorectal adenomas, whereas M-CSF and CRP are independent prognostic factors for the survival of patients with CRC. This review confirms the promising significance of these proteins as circulating biomarkers for CRC. However, due to their non-specific nature, further validation of their sensitivity and specificity is required.

scholarly journals Surface-Enhanced Oxidation and Determination of Isothipendyl Hydrochloride at an Electrochemical Sensing Film Constructed by Multiwalled Carbon Nanotubes

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
S. N. Prashanth ◽  
Shankara S. Kalanur ◽  
Nagappa L. Teradal ◽  
J. Seetharamappa
Keyword(s):  
Limit Of Detection ◽  
Biological Fluids ◽  
Differential Pulse ◽  
Electrochemical Sensing ◽  
Good Precision ◽  
Multiwalled Carbon ◽  
Limit Of Quantification ◽  
Surface Enhanced ◽  
Ph Range

The electrochemical behavior of isothipendyl hydrochloride (IPH) was investigated at bare and multiwalled-carbon-nanotube modified glassy carbon electrode (MWCNT-GCE). IPH (55 μM) showed two oxidation peaks in Britton-Robinson (BR) buffer of pH 7.0. The oxidation process of IPH was observed to be irreversible over the pH range of 2.5–9.0. The influence of pH, scan rate, and concentration of the drug on anodic peak was studied. A differential pulse voltammetric method with good precision and accuracy was developed for the determination of IPH in pure and biological fluids. The peak current was found to be linearly dependent on the concentration of IPH in the range of 1.25–55 μM. The values of limit of detection and limit of quantification were noticed to be 0.284 and 0.949 μM, respectively.

scholarly journals Circulating Biomarkers of One-Carbon Metabolism in Relation to Renal Cell Carcinoma Incidence and Survival

2014 ◽  
Vol 106 (12) ◽  
Author(s):  
Mattias Johansson ◽  
Anouar Fanidi ◽  
David C. Muller ◽  
Julie K. Bassett ◽  
Øivind Midttun ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Carbon Metabolism ◽  
Renal Cell ◽  
Circulating Biomarkers ◽  
One Carbon Metabolism

scholarly journals PD-L1 testing as a way of personalizing the treatment of non-small cell lung cancer

2019 ◽  
pp. 40-45
Author(s):  
Yu. V. Moskalenko ◽  
I. О. Vуnnуchenko ◽  
O. M. Smorodska ◽  
O. I. Vynnychenko ◽  
R. A Moskalenko
Keyword(s):  
Lung Cancer ◽  
Biological Fluids ◽  
Malignant Neoplasm ◽  
Expression Level ◽  
Specific Proteins ◽  
Third Line Therapy ◽  
Third Line ◽  
Line Of Therapy ◽  
Combined Drugs

Lung cancer is one of the main causes of death from malignant neoplasm all around the world. For the purpose of personalized treatment immunohistochemical determination of specific proteins (biomarkers) presence in tissues and biological fluids is needed. Today management of patients with lung cancer is directly associated with determination of genes mutations: EGFR, ALK, ROS1 and rate of PD-L1 receptors expression. Depending on the PD-L1 expression level blockers of these receptors can be used as the first, supportive and second / third line therapy. As the first line of therapy for patients with high expression level of PD-L1 (≥ 50 % TPS) Pemblizomab is recommended, while for patients with moderate levels (PD-L1 1 – 49% TPS) PD-L1 blockers can be used only as a second / third line of therapy. In numerous clinical trials efficiency and safety of Pemrolizumab, Nivolumab and Atezolizumab have been proved. Testing of Avelumab, Durvalumab, as well as combined drugs – Ipilimumab and Tremilimumb are still going on.

scholarly journals Low-Fouling Substrates for Plasmonic Sensing of Circulating Biomarkers in Biological Fluids

Biosensors ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 63
Author(s):  
Elba Mauriz
Keyword(s):  
Biological Fluids ◽  
Point Of Care ◽  
Disease Onset ◽  
Screening Tools ◽  
Circulating Biomarkers ◽  
Prognostic Information ◽  
Wide Range ◽  
Biomarker Analysis ◽  
Surface Enhanced Raman ◽  
The Impact

The monitoring of biomarkers in body fluids provides valuable prognostic information regarding disease onset and progression. Most biosensing approaches use noninvasive screening tools and are conducted in order to improve early clinical diagnosis. However, biofouling of the sensing surface may disturb the quantification of circulating biomarkers in complex biological fluids. Thus, there is a great need for antifouling interfaces to be designed in order to reduce nonspecific adsorption and prevent inactivation of biological receptors and loss of sensitivity. To address these limitations and enable their application in clinical practice, a variety of plasmonic platforms have been recently developed for biomarker analysis in easily accessible biological fluids. This review presents an overview of the latest advances in the design of antifouling strategies for the detection of clinically relevant biomarkers on the basis of the characteristics of biological samples. The impact of nanoplasmonic biosensors as point-of-care devices has been examined for a wide range of biomarkers associated with cancer, inflammatory, infectious and neurodegenerative diseases. Clinical applications in readily obtainable biofluids such as blood, saliva, urine, tears and cerebrospinal and synovial fluids, covering almost the whole range of plasmonic applications, from surface plasmon resonance (SPR) to surface-enhanced Raman scattering (SERS), are also discussed.

αB-Crystallin in clear cell renal cell carcinoma: Tumor progression and prognostic significance

2013 ◽  
Vol 31 (7) ◽  
pp. 1367-1377 ◽  
Author(s):  
Pei-Yin Ho ◽  
Shih-Chieh Chueh ◽  
Shyh-Horng Chiou ◽  
Shuo-Meng Wang ◽  
Wei-Chou Lin ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Tumor Progression ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Clear Cell ◽  
Prognostic Significance ◽  
Cell Renal Cell Carcinoma ◽  
Αb Crystallin ◽  
Carcinoma Tumor

scholarly journals MicroRNA-219-5p Represses the Proliferation, Migration, and Invasion of Gastric Cancer Cells by Targeting the LRH-1/Wnt/β-Catenin Signaling Pathway

2017 ◽  
Vol 25 (4) ◽  
pp. 617-627 ◽  
Author(s):  
Chunsheng Li ◽  
Jingrong Dong ◽  
Zhenqi Han ◽  
Kai Zhang
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Cell Lines ◽  
Human Cancer ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Human Gastric Cancer ◽  
Gastric Cancer Cells ◽  
Cancer Tissues

MicroRNAs (miRNAs) are reportedly involved in gastric cancer development and progression. In particular, miR-219-5p has been reported to be a tumor-associated miRNA in human cancer. However, the role of miR-219-5p in gastric cancer remains unclear. In this study, we investigated for the first time the potential role and underlying mechanism of miR-219-5p in the proliferation, migration, and invasion of human gastric cancer cells. miR-219-5p was found to be markedly decreased in gastric cancer tissues and cell lines compared with adjacent tissues and normal gastric epithelial cells. miR-219-5p mimics or anti-miR-219-5p was transfected into gastric cancer cell lines to overexpress or suppress miR-219-5p expression, respectively. Results showed that miR-219-5p overexpression significantly decreased the proliferation, migration, and invasion of gastric cancer cells. Conversely, miR-219-5p suppression demonstrated a completely opposite effect. Bioinformatics and luciferase reporter assays indicated that miR-219-5p targeted the 3′-untranslated region of the liver receptor homolog-1 (LRH-1), a well-characterized oncogene. Furthermore, miR-219-5p inhibited the mRNA and protein levels of LRH-1. LRH-1 mRNA expression was inversely correlated with miR-219-5p expression in gastric cancer tissues. miR-219-5p overexpression significantly decreased the Wnt/β-catenin signaling pathway in gastric cancer cells. Additionally, LRH-1 restoration can markedly reverse miR-219-5p-mediated tumor suppressive effects. Our study suggests that miR-219-5p regulated the proliferation, migration, and invasion of human gastric cancer cells by suppressing LRH-1. miR-219-5p may be a potential target for gastric cancer therapy.

Enzymatic profiling of human kallikrein 14 using phage-display substrate technology

2005 ◽  
Vol 386 (3) ◽  
pp. 291-298 ◽  
Author(s):  
Loyse M. Felber ◽  
Carla A. Borgoño ◽  
Sylvain M. Cloutier ◽  
Christoph Kündig ◽  
Tadaaki Kishi ◽  
...  
Keyword(s):  
Phage Display ◽  
Serine Protease ◽  
Biological Fluids ◽  
Collagen Iv ◽  
Protein Substrates ◽  
Arginine Residues ◽  
Aggressive Tumors ◽  
Enzymatic Profiling ◽  
Cancer Tissues ◽  
Endocrine Tissues

AbstractThe humanKLK14gene is one of the newly identified serine protease genes belonging to the human kallikrein family, which contains 15 members.KLK14, like all other members of the human kallikrein family, is predicted to encode for a secreted serine protease already found in various biological fluids. This new kallikrein is mainly expressed in prostate and endocrine tissues, but its function is still unknown. Recent studies have demonstrated thatKLK14gene expression is up-regulated in prostate and breast cancer tissues, and that higher expression levels correlate with more aggressive tumors. In this work, we used phage-display substrate technology to study the substrate specificity of hK14. A phage-displayed random pentapeptide library with exhaustive diversity was screened with purified recombinant hK14. Highly specific and sensitive substrates were selected from the library. We show that hK14 has dual activity, trypsin- and chymotrypsin-like, with a preference for cleavage after arginine residues. A SwissProt database search with selected sequences identified six potential human protein substrates for hK14. Two of them, laminin α-5 and collagen IV, which are major components of the extracellular matrix, have been demonstrated to be hydrolyzed efficiently by hK14.

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