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MicroRNAs and early detection

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https://www.readbyqxmd.com/read/28436261/a-qrt-pcr-and-gene-functional-enrichment-study-focused-on-downregulation-of-mir-141-3p-in-hepatocellular-carcinoma-and-its-clinicopathological-significance
#1
Cui-Zhen Liu, Zhi-Hua Ye, Jie Ma, Rong-Quan He, Hai-Wei Liang, Zhi-Gang Peng, Gang Chen
BACKGROUND: The clinical significance of miR-141-3p in hepatocellular carcinoma has not been verified. Therefore, we conducted this study to examine miR-141-3p expression and its clinical significance in hepatocellular carcinoma and to investigate the functions of its potential targets. METHODS: The Cancer Genome Atlas database and the Gene Expression Omnibus database were used to explore the aberrant expression of miR-141-3p in hepatocellular carcinoma. Furthermore, we assessed the miR-141-3p levels in 95 hepatocellular carcinoma tissues with 95 matched adjacent tissues using real-time quantitative polymerase chain reaction...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28434989/colorimetric-detection-of-microrna-based-hybridization-chain-reaction-for-signal-amplification-and-enzyme-for-visualization
#2
Na Ying, Taifan Sun, Zhibao Chen, Guangping Song, Bingyao Qi, Shengjun Bu, Xiuwei Sun, Jiayu Wan, Zehong Li
MicroRNAs (miRNAs) have key roles in gene expression and can be employed as biomarkers for early diagnosis of various diseases, especially cancers. Detection of miRNAs remains challenging and often requires detection platforms. Here, a horseradish peroxidase (HRP)-assisted hybridization chain reaction (HCR) for colorimetric detection of miR-155 was described. In the presence of target miRNA, the capture probe immobilized on the microplate sandwiched the target miR-155 with the 3' end of the reporter probe. Another exposed part of the RP at the 5'end triggered HCR producing double-stranded DNA polymers with multiple fluorescein isothiocyanates (FITC) for signal amplification...
April 20, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28425921/plasma-micro-rna-alterations-appear-late-in-pancreatic-cancer
#3
Oskar Franklin, Pär Jonsson, Ola Billing, Erik Lundberg, Daniel Öhlund, Hanna Nyström, Christina Lundin, Henrik Antti, Malin Sund
OBJECTIVES: The aim of this research was to study whether plasma microRNAs (miRNA) can be used for early detection of pancreatic cancer (PC) by analyzing prediagnostic plasma samples collected before a PC diagnosis. BACKGROUND: PC has a poor prognosis due to late presenting symptoms and early metastasis. Circulating miRNAs are altered in PC at diagnosis but have not been evaluated in a prediagnostic setting. METHODS: We first performed an initial screen using a panel of 372 miRNAs in a retrospective case-control cohort that included early-stage PC patients and healthy controls...
January 3, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28423689/diagnostic-and-prognostic-potential-of-serum-microrna-4651-for-patients-with-hepatocellular-carcinoma-related-to-aflatoxin-b1
#4
Xue-Min Wu, Zhi-Feng Xi, Pinhu Liao, Hong-Dong Huang, Xiao-Ying Huang, Chao Wang, Yun Ma, Qiang Xia, Jin-Guang Yao, Xi-Dai Long
BACKGROUND: The serum microRNAs have been reported as potential biomarkers for hepatitis virus-related hepatocellular carcinoma (HCC); however, their role in aflatoxin B1 (AFB1)-related HCC to has not yet been evaluated. MATERIALS AND METHODS: We conducted a case-control study, including 366 HCC cases and 662 controls without any evidence of tumors, to identify and assess diagnostic and prognostic potential of serum microRNAs for AFB1-related HCC. The sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) were used to elucidate diagnostic performance, and to compare the microRNAs with α-fetoprotein (AFP) at a cutoff of 20 ng/mL (AFP20) and 400 ng/mL (AFP400)...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423361/next-generation-sequencing-reveals-microrna-markers-of-adrenocortical-tumors-malignancy
#5
Łukasz Koperski, Marta Kotlarek, Michał Świerniak, Monika Kolanowska, Anna Kubiak, Barbara Górnicka, Krystian Jażdżewski, Anna Wójcicka
BACKGROUND: Adrenocortical carcinoma is a rare finding among common adrenocortical tumors, but it is highly aggressive and requires early detection and treatment. Still, the differential diagnosis between benign and malignant lesions is difficult even for experienced pathologists and there is a significant need for novel diagnostic methods. In this study we aimed to reveal a complete set of microRNAs expressed in the adrenal gland and to identify easily detectable, stable and objective biomarkers of adrenocortical malignancy...
April 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28404964/identification-of-serum-mir-139-3p-as-a-non-invasive-biomarker-for-colorectal-cancer
#6
Lui Ng, Timothy Ming-Hun Wan, Johnny Hon-Wai Man, Ariel Ka-Man Chow, Deepak Iyer, Guanghua Chen, Thomas Chung-Cheung Yau, Oswens Siu-Hung Lo, Dominic Chi-Chung Foo, Jensen Tung-Chung Poon, Wai-Keung Leung, Roberta Wen-Chi Pang, Wai-Lun Law
Aberrant levels of circulating microRNAs are potential biomarkers for the early detection of colorectal cancer. The aim of this study was to study miR-139-3p and miR-622 in serum as a non-invasive biomarker for colorectal cancer diagnosis. We applied quantitative polymerase chain reaction to determine the levels of miR-139-3p and miR-622 in 42 pairs of tumor and adjacent non-tumor tissues, and in serum samples of 117 patients and 90 control subjects. Our results showed that miR-139-3p was silenced whereas miR-622 was overexpressed in colorectal cancer...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28393213/micrornas-driving-invasion-and-metastasis-in-ovarian-cancer-opportunities-for-translational-medicine-review
#7
Carlos Palma Flores, Raúl García-Vázquez, Dolores Gallardo Rincón, Erika Ruiz-García, Horacio Astudillo de la Vega, Laurence A Marchat, Yarely M Salinas Vera, César López-Camarillo
Epithelial ovarian cancer is the fifth most frequent cause of cancer death in women. In spite of the advantages in early detection and treatment options, overall survival rates have improved only slightly in the last decades. Therefore, alternative therapeutic approaches need to overcome resistance and improve the patient survival and outcome. MicroRNAs are evolutionary conserved small non-coding RNAs that function as negative regulators of gene expression by inhibiting translation or inducing degradation of messenger RNAs...
May 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28386997/the-transformation-in-biomarker-detection-and-management-of-drug-induced-liver-injury
#8
REVIEW
Rachel J Church, Paul B Watkins
Drug-induced liver injury (DILI) is a major concern for patients, care givers and the pharmaceutical industry. Interpretation of the serum biomarkers routinely used to detect and monitor DILI, which have not changed in almost 50 years, can be improved with recently proposed models employing quantitative systems pharmacology. In addition, several newer serum biomarkers are showing great promise. Studies in rodents indicate that the ratio of the caspase cleaved fragment of cytokeratin 18 to total K18 in serum (termed the "apoptotic index") estimates the relative proportions of apoptosis vs necrosis during drug-induced liver injury...
April 7, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28380001/changes-in-circulating-microrna-levels-can-be-identified-as-early-as-day-8-of-pregnancy-in-cattle
#9
Jason Ioannidis, F Xavier Donadeu
Poor reproductive performance remains a major issue in the dairy industry, with low conception rates having a significant impact on milk production through extended calving intervals. A major limiting factor is the lack of reliable methods for early pregnancy diagnosis. Identification of animals within a herd that fail to conceive within 3 weeks after insemination would allow early re-insemination and shorten calving intervals. In a previous study, we found an increase in plasma miR-26a levels in Day 16-pregnant relative to non-pregnant heifers, however changes in miRNA levels that early during pregnancy were very small which likely prevented the identification of robust biomarkers...
2017: PloS One
https://www.readbyqxmd.com/read/28377429/circulating-micrornas-potential-markers-of-cardiotoxicity-in-children-and-young-adults-treated-with-anthracycline-chemotherapy
#10
Kasey J Leger, David Leonard, Danelle Nielson, James A de Lemos, Pradeep P A Mammen, Naomi J Winick
BACKGROUND: Biomarkers for early detection of anthracycline (AC)-induced cardiotoxicity may allow cardioprotective intervention before irreversible damage. Circulating microRNAs (miRNAs) are promising biomarkers of cardiovascular disease, however, have not been studied in the setting of AC-induced cardiotoxicity. This study aimed to identify AC-induced alterations in plasma miRNA expression in children and correlate expression with markers of cardiac injury. METHODS AND RESULTS: Candidate plasma profiling of 24 miRNAs was performed in 33 children before and after a cycle of AC (n=24) or noncardiotoxic chemotherapy (n=9)...
April 4, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28374902/impact-of-microrna-375-and-its-target-gene-smad-7-polymorphism-on-susceptibility-of-colorectal-cancer
#11
Olfat Gamil Shaker, Shereen Rashad Mohammed, Asmaa Mohammed Mohammed, Zeinab Mahmoud
BACKGROUND: Colorectal cancer (CRC) has a high morbidity and mortality. Many studies reported that mir-375 is frequently down-regulated in many cancers including esophageal cancer, hepatocellular carcinoma, breast cancer and leukemias. AIM: Our aim was to study the expression of microRNA-375 and its target gene SMAD-7 polymorphisms (rs4939827) in CRC patients in comparison to control subjects and to correlate these results with clinical data of patients to elucidate their role in pathogenesis and early diagnosis of CRC...
April 4, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28371285/a-two-stage-dissociation-system-for-multilayer-imaging-of-cancer-biomarker-synergic-networks-in-single-cells
#12
Ruo-Can Qian, Yue Cao, Li-Jun Zhao, Zhen Gu, Yi-Tao Long
The monitoring of cancer biomarkers is crucial to the early detection of cancer. However, a limiting factor in biomarker analysis is the ability to obtain the multilayered information of various biomarker molecules located at different parts of cells from the plasma membrane to the cytoplasm. A two-stage dissociation nanoparticle system based on multifunctionalized polydopamine-coated gold nanoparticles (Au@PDA NPs) is reported, which allows for the two-stage imaging of cancer biomarkers in single cells. We demonstrate the feasibility of this strategy on sialic acids (SAs), p53 protein, and microRNA-21 (miRNA-21) in MCF-7 breast cancer cells by two custom-built probes...
March 28, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28366737/mirna-101-1-and-mirna-221-expressions-and-their-polymorphisms-as-biomarkers-for-early-diagnosis-of-hepatocellular-carcinoma
#13
Olfat Shaker, Maha Alhelf, George Morcos, Aisha Elsharkawy
BACKGROUND: Hepatocellular carcinoma (HCC) is the fifth most common malignant tumor with an increasing incidence. Hepatitis C virus (HCV) is one of the major risk factors that lead to HCC development. MicroRNAs are conserved non-coding RNAs which regulate gene expression at the posttranscriptional level. They have been recently identified as important regulators that affect carcinogenesis. Of these miRNAs, are miR-221 and miR-101-1, which their aberrant expressions have been reported to play an important role in HCC...
March 30, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28364703/a-sensitive-immunosensor-via-in-situ-enzymatically-generating-efficient-quencher-for-electrochemiluminescence-of-iridium-complexes-doped-sio2-nanoparticles
#14
Wenbin Liang, Ying Zhuo, Chengyi Xiong, Yingning Zheng, Yaqin Chai, Ruo Yuan
A sensitive electrochemiluminescent (ECL) sandwich immunosensor was proposed herein based on the tris (2-phenylpyridine) iridium [Ir(ppy)3] doped silica nanoparticles (SiO2@Ir) with improved ECL emission as signal probes and glucose oxidase (GOD)-based in situ enzymatic reaction to generate H2O2 for efficiently quenching the ECL emission of SiO2@Ir. Typically, the SiO2@Ir not only increased the loading amount of Ir(ppy)3 as ECL indicators with high ECL emission, but also improved their water-solubility, which efficiently enhanced the ECL emission...
March 27, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28363193/dual-mode-electrochemical-analysis-of-microrna-21-using-gold-nanoparticle-decorated-mos2-nanosheet
#15
Shao Su, Wenfang Cao, Wei Liu, Zaiwei Lu, Dan Zhu, Jie Chao, Lixing Weng, Lihua Wang, Chunhai Fan, Lianhui Wang
The detection of microRNA plays an important role in early cancer diagnosis. Herein, a dual-mode electronic biosensor was developed for microRNA-21 (miRNA-21) detection based on gold nanoparticle-decorated MoS2 nanosheet (AuNPs@MoS2). A classical DNA "sandwich" structure was employed to construct MoS2-based electrochemical sensor, including capture DNA, target miRNA-21 and DNA-modified nanoprobe. [Fe(CN)6](3-/4-) and [Ru(NH3)6](3+) were selected as electrochemical indicators to monitor the preparation process and evaluate the performance of MoS2-based electrochemical biosensor by electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV), respectively...
March 20, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28358481/fluorescence-and-sers-imaging-for-the-simultaneous-absolute-quanti%C3%AF-cation-of-multiple-mirnas-in-living-cells
#16
Sujuan Ye, Xiaoxiao Li, Menglei Wang, Bo Tang
The simultaneous imaging and quantification of multiple intracellular microRNAs (miRNAs) are particularly desirable for the early diagnosis of cancers. However, simultaneous direct imaging with absolute quantification of multiple intracellular RNAs remains a great challenge, particularly for miRNAs, which have significantly different expression levels in living cells. We designed dual signal switchable (DSS) nanoprobes using the fluorescence-Raman signal switch. The intracellular uptake and dynamic behaviors of the probe are monitored by its fluorescence signal...
March 30, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28357401/computational-analysis-of-specific-microrna-biomarkers-for-noninvasive-early-cancer-detection
#17
Tianci Song, Yanchun Liang, Zhongbo Cao, Wei Du, Ying Li
Cancer is a complex disease residing in various tissues of human body, accompanied with many abnormalities and mutations in genomes, transcriptome, and epigenome. Early detection plays a crucial role in extending survival time of all major cancer types. Recent advances in microarray and sequencing techniques have given more support to identifying effective biomarkers for early detection of cancer. MicroRNAs (miRNAs) are more and more frequently used as candidates for biomarkers in cancer related studies due to their regulation of target gene expression...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28343174/mirna-analysis-in-pancreatic-cancer-the-dartmouth-experience
#18
REVIEW
Francine B de Abreu, Xiaoying Liu, Gregory J Tsongalis
Pancreatic cancer is considered one of the most lethal cancers being the fourth leading cause of cancer deaths in adults in the United States because of the lack of early signs and symptoms and the lack of early detection. Pancreatic ductal adenocarcinoma (PDAC) is the most common histological type among pancreatic cancers, representing 80%-90% of all solid tumors of the pancreas. The majority of PDAC develops from three precursor lesions: pancreatic intraepithelial neoplasia, intraductual papillary mucinous neoplasm and mucinous cystic neoplasm...
May 1, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28306671/noninvasive-monitoring-of-acute-and-chronic-rejection-in-heart-transplantation
#19
Maria G Crespo-Leiro, Gonzalo Barge-Caballero, David Couto-Mallon
PURPOSE OF REVIEW: Recent years have seen advances in the early detection of cardiac graft rejection. RECENT FINDINGS: We review the possibilities offered by tissue Doppler imaging and speckle tracking echocardiography, cardiac magnetic resonance, cardiac computed tomography, single positron emission tomography, gene expression profiling, and quantitation of donor-derived cell-free DNA, and microRNAs. SUMMARY: Noninvasive monitoring of acute and chronic rejection after cardiac transplantation is an unmet need and remains a challenge...
March 16, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28303893/changes-in-mirna-in-the-lung-and-whole-blood-after-whole-thorax-irradiation-in-rats
#20
Feng Gao, Pengyuan Liu, Jayashree Narayanan, Meiying Yang, Brian L Fish, Yong Liu, Mingyu Liang, Elizabeth R Jacobs, Meetha Medhora
We used a rat model of whole thorax x-ray irradiation to profile the microRNA (miRNA) in lung and blood up to 4 weeks after radiation. MiRNA from normal and irradiated Wistar rat lungs and whole blood were analyzed by next-generation sequencing and the changes by radiation were identified by differential deRNA-seq 1, 2, 3 and 4 weeks after irradiation. The average total reads/library was 2,703,137 with a mean of 88% mapping to the rat genome. Detailed profiles of 100 of the most abundant miRNA in rat blood and lung are described...
March 17, 2017: Scientific Reports
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