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Biomarker Research

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https://www.readbyqxmd.com/read/28815041/-upregulation-of-cd47-by-the-endoplasmic-reticulum-stress-pathway-controls-anti-tumor-immune-responses
#1
Katherine L Cook, David R Soto-Pantoja
We recently demonstrated that targeting the unfolded protein response (UPR) protein GRP78 down-regulates CD47 expression, resulting in increased tumor macrophage infiltration and inhibited resistance to anti-estrogen therapy. We now show new data indicating that anti-estrogen therapy regulates CD47 expression and implicates its ligand, thrombospondin-1, in regulation of tumor macrophage infiltration. Moreover, GRP78 and CD47 co-expression is associated with poor prognosis in breast cancer patients, suggesting the existence of crosstalk between UPR and immunity that regulates therapeutic responses in breast cancer...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28804638/tumor-associated-macrophages-potential-targets-for-cancer-treatment
#2
REVIEW
Li Yang, Yi Zhang
The fact that various immune cells, including macrophages, can be found in tumor tissues has long been known. With the introduction of concept that macrophages differentiate into a classically or alternatively activated phenotype, the role of tumor-associated macrophages (TAMs) is now beginning to be elucidated. TAMs act as "protumoral macrophages", contributing to disease progression. As the relationship between TAMs and malignant tumors becomes clearer, TAMs are beginning to be seen as potential therapeutic targets in these cases...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28702194/elevation-of-brain-enriched-mirnas-in-cerebrospinal-fluid-of-patients-with-acute-ischemic-stroke
#3
Sofie Sølvsten Sørensen, Ann-Britt Nygaard, Anting Liu Carlsen, Niels H H Heegaard, Mads Bak, Thomas Christensen
BACKGROUND: The purpose of this study was to investigate the potential of cerebrospinal fluid miRNAs as diagnostic biomarkers of acute ischemic stroke using three different profiling techniques in order to identify and bypass any influence from technical variation. METHODS: Cerebrospinal fluid (CSF) from patients with acute ischemic stroke (n = 21) and controls (n = 21) was collected by lumbar puncture. miRNA analysis was performed with three different methods: 1) Trizol RNA extraction followed by Illumina Next Generation Sequencing (NGS) on all small RNAs, 2) Exiqon RNA extraction protocol and miRNA qPCR assays, and 3) validation of 24 selected miRNAs with Norgen Biotek RNA extraction protocol and Applied Biosystems qPCR assays...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28702193/update-on-the-first-line-treatment-for-helicobacter-pylori-infection-a-continuing-challenge-from-an-old-enemy
#4
REVIEW
Chih-Chieh Huang, Kuo-Wang Tsai, Tzung-Jiun Tsai, Ping-I Hsu
Because the prevalence of antibiotic resistance markedly increases with time worldwide, anti-H. pylori treatment is continuing to be a great challenge forsphysicians in clinical practice. The Real-world Practice & Expectation of Asia-Pacific Physicians and Patients in Helicobacter Pylori Eradication (REAP-HP) Survey demonstrated that the accepted minimal eradication rate of anti-H. pylori regimen in H. pylori-infected patients was 91%. The Kyoto Consensus Report on Helicobacter Pylori Gastritis also recommended that, within any region, only regimens which reliably produce eradication rates of ≥90% in that population should be used for empirical treatment...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28652918/engineering-car-t-cells
#5
REVIEW
Cheng Zhang, Jun Liu, Jiang F Zhong, Xi Zhang
Chimeric antigen receptor redirected T cells (CAR-T cells) have achieved inspiring outcomes in patients with B cell malignancies, and are now being investigated in other hematologic malignancies and solid tumors. CAR-T cells are generated by the T cells from patients' or donors' blood. After the T cells are expanded and genetically modified, they are reinfused into the patients. However, many challenges still need to be resolved in order for this technology to gain widespread adoption. In this review, we first discuss the structure and evolution of chimeric antigen receptors...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28616237/higher-serum-concentrations-of-vimentin-and-dakp1-are-associated-with-aggressive-breast-tumour-phenotypes-in-ghanaian-women
#6
Benjamin Arko-Boham, Justice Tanihu Lomotey, Emmanuel Nomo Tetteh, Emmanuel Ayitey Tagoe, Nii Ayite Aryee, Ewurama Ampadu Owusu, Isaac Okai, Richard Michael Blay, Joe-Nat Clegg-Lamptey
BACKGROUND: Breast cancer, the most commonly diagnosed cancer among women and leading cause of cancer-related deaths worldwide, exhibits aggressive behavior in indigenous African women evidenced by high histologic grade tumours with low hormone receptor positivity. Aggressive breast cancers grow quickly, easily metastasize and recur and often have unfavourable outcomes. The current study investigated candidate genes that may regulate tumour aggression in Ghanaian women. We hypothesize that increased expression and function of certain genes other than the widely-held view attributing breast cancer aggression in African populations to their younger population age may be responsible for the aggressive nature of tumours...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28593047/integration-of-a-bacterial-gene-sequence-into-a-chronic-eosinophilic-leukemia-patient-s-genome-as-part-of-a-fusion-gene-linker
#7
Saveen Sidhoo, Jesusa L Rosales, Ki-Young Lee
Analysis of databases from the human genome project (HGP), the 1000 Genomes Project (1KGP), and The Cancer Genome Atlas (TCGA) revealed bacterial DNA integration into the human somatic genome, particularly in tumor tissues. Fusion genes have also been associated with tumorigenesis and 34 PDGFR fusion genes are linked to hematological malignancies. Here, we determined that a 17-bp homologous sequence in Marinobacter sp. Hb8, Rhodococcus fascians D188, Rhodococcus sp. PBTS2, Micrococcus luteus strain trpE16 and M...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28529755/bone-biomarker-for-the-clinical-assessment-of-osteoporosis-recent-developments-and-future-perspectives
#8
REVIEW
Tsung-Rong Kuo, Chih-Hwa Chen
Bone biomarkers included formation, resorption and regulator are released during the bone remodeling processes. These bone biomarkers have attracted much attention in the clinical assessment of osteoporosis treatment in the past decade. Combination with the measurement of bone mineral density, the clinical applications of bone biomarkers have provided comprehensive information for diagnosis of osteoporosis. However, the analytical approaches of the bone biomarkers are still the challenge for further clinical trials...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28507762/circulating-tumor-cell-clusters-associated-gene-plakoglobin-is-a-significant-prognostic-predictor-in-patients-with-breast-cancer
#9
Wataru Goto, Shinichiro Kashiwagi, Yuka Asano, Koji Takada, Katsuyuki Takahashi, Takaharu Hatano, Tsutomu Takashima, Shuhei Tomita, Hisashi Motomura, Masahiko Ohsawa, Kosei Hirakawa, Masaichi Ohira
BACKGROUND: Circulating tumor cells (CTCs) are linked to metastatic relapse and are regarded as a prognostic marker for human cancer. High expression of plakoglobin, a cell adhesion protein, within the primary tumor is positively associated with CTC clusters in breast cancer. In this study, we investigated the correlation between plakoglobin expression and survival of breast cancer. METHODS: We evaluated 121 breast cancer patients treated with neoadjuvant chemotherapy...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28503307/clinical-significance-of-intronic-variants-in-braf-inhibitor-resistant-melanomas-with-altered-braf-transcript-splicing
#10
Gulietta M Pupo, Suzanah C Boyd, Carina Fung, Matteo S Carlino, Alexander M Menzies, Bernadette Pedersen, Peter Johansson, Nicholas K Hayward, Richard F Kefford, Richard A Scolyer, Georgina V Long, Helen Rizos
Alternate BRAF splicing is the most common mechanism of acquired resistance to BRAF inhibitor treatment in melanoma. Recently, alternate BRAF exon 4-8 splicing was shown to involve an intronic mutation, located 51 nucleotides upstream of BRAF exon 9 within a predicted splicing branch point. This intronic mutation was identified in a single cell line but has not been examined in vivo. Herein we demonstrate that in three melanomas biopsied from patients with acquired resistance to BRAF inhibitors, alternate BRAF exon 4-8 splicing is not associated with this intronic branch point mutation...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28503306/the-drive-to-generate-multiple-forms-of-oncogenic-cyclin-d1-transcripts-in-mantle-cell-lymphoma
#11
EDITORIAL
Chioniso Patience Masamha
Alternative polyadenylation is a rapidly emerging form of gene regulation, which in its simplest form, enables the generation of mRNA transcripts that code for the same protein but have 3'UTRs of different lengths and regulatory content. For oncogenes, shorter 3'UTRs would be preferred as a mechanism to evade miRNA regulation. The shortening of the 3'UTR of cyclin D1 in mantle cell lymphoma offers provocative insights into this process. Patient samples have revealed that 3'UTR shortening may occur due to mutations, or translocations that result in the generation of a chimeric 3'UTR...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28439416/burden-of-hepatocellular-carcinoma-among-hispanics-in-south-texas-a-systematic-review
#12
REVIEW
John Ha, Aysha Chaudhri, Abhishek Avirineni, Jen-Jung Pan
BACKGROUND: Hepatocellular carcinoma (HCC) is one of the fastest rising causes of cancer-related mortality in the United States (U.S.). Despite improved HCC screening and surveillance guidelines, significant race/ethnicity-specific disparities in hepatocellular carcinoma remain, disproportionately affecting at risk racial minorities in the U.S. The current review aims to provide an updated analysis on race/ethnicity-specific disparities in HCC epidemiology with a focus on predisposing risk factors...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28405337/autoimmune-hemolytic-anemia-associated-with-babesiosis
#13
Roshni Narurkar, Aleksandra Mamorska-Dyga, John C Nelson, Delong Liu
BACKGROUND: Babesiosis is endemic in selected areas in North America. Babesia infection is commonly associated with anemia, thrombocytopenia, hyponatremia and elevated liver enzymes. Autoimmune hemolytic anemia (AIHA) is known to be caused by parasitic and viral infections but has not been well characterized. CASE PRESENTATION: We describe two cases diagnosed with babesiosis triggering severe AIHA. One case had history of splenectomy, and the other was an elderly patient...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28344803/length-of-hospitalization-is-associated-with-selected-biomarkers-albumin-and-lymphocytes-and-with-co-morbidities-study-on-4000-patients
#14
Antonio E Pontiroli, Lara Loreggian, Marco P L Rovati, Elena De Patto, Laura Folini, Federico Raveglia, Matilde De Simone, Alessandro Baisi, Ugo Cioffi
BACKGROUND: Low albumin levels and low lymphocyte counts are intra hospital conditions that exert a negative influence on prognosis, healing and length of hospitalization. The study aimed to analyze the correlation between low blood levels of albumin, low lymphocytes, and length of stay. The secondary aim was to identify other co-morbidities associated with prolonged hospital stay. METHODS: Retrospective pilot study was conducted by analyzing anamnestic and biochemical data, related to 4038 patients admitted to ten wards of Hospital San Paolo (Milan), collected from July 1(st) 2012 to December 31(st) 2012...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28331612/utility-of-pd-l1-immunohistochemistry-assays-for-predicting-pd-1-pd-l1-inhibitor-response
#15
REVIEW
Laurence P Diggs, Eddy C Hsueh
We have seen a notable increase in the application of PD-1/PD-L1 inhibitors for the treatment of several solid and hematogenous malignancies including metastatic melanoma, non-small-cell lung cancer and lymphoma to name a few. The need for biomarkers for identification of a suitable patient population for this type of therapy is now pressing. While specific biomarker assays have been developed for these checkpoint inhibitors based on their respective epitopes, the available studies suggested the clinical utility of these biomarker assays is for response stratification and not patient selection...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28293426/identification-of-potential-serum-biomarkers-for-breast-cancer-using-a-functional-proteomics-technology
#16
David L Wang, Chuanguang Xiao, Guofeng Fu, Xing Wang, Liang Li
BACKGROUND: Cancer is a genetic disease; its development and metastasis depend on the function of many proteins. Human serum contains thousands of proteins; it is a window for the homeostasis of individual's health. Many of the proteins found in the human serum could be potential biomarkers for cancer early detection and drug efficacy evaluation. METHODS: In this study, a functional proteomics technology was used to systematically monitor metabolic enzyme and protease activities from resolved serum proteins produced by a modified 2-D gel separation and subsequent Protein Elution Plate, a method collectively called PEP...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28293425/podocalyxin-like-and-rna-binding-motif-protein-3-are-prognostic-biomarkers-in-urothelial-bladder-cancer-a-validatory-study
#17
Karolina Boman, Gustav Andersson, Christoffer Wennersten, Björn Nodin, Göran Ahlgren, Karin Jirström
BACKGROUND: Urothelial bladder cancer (UBC) is a disease that often is discovered when the tumour is non-muscle invasive, i.e. in Ta or T1 stage. Some patients will progress into muscle-invasive disease, a potentially deadly condition. Although there are some prognostic models, the need for prognostic and predictive biomarkers is considerate and urgent. Membranous expression of podocalyxin-like protein 1 (PODXL) and low expression of the RNA-binding motif 3 (RBM3) has previously been shown to be associated with an aggressive tumour phenotype and poor prognosis in several forms of cancer, including UBC...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28293424/application-of-penalized-linear-regression-methods-to-the-selection-of-environmental-enteropathy-biomarkers
#18
Miao Lu, Jianhui Zhou, Caitlin Naylor, Beth D Kirkpatrick, Rashidul Haque, William A Petri, Jennie Z Ma
BACKGROUND: Environmental Enteropathy (EE) is a subclinical condition caused by constant fecal-oral contamination and resulting in blunting of intestinal villi and intestinal inflammation. Of primary interest in the clinical research is to evaluate the association between non-invasive EE biomarkers and malnutrition in a cohort of Bangladeshi children. The challenges are that the number of biomarkers/covariates is relatively large, and some of them are highly correlated. METHODS: Many variable selection methods are available in the literature, but which are most appropriate for EE biomarker selection remains unclear...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28239461/tissue-microrna-profiles-as-diagnostic-and-prognostic-biomarkers-in-patients-with-resectable-pancreatic-ductal-adenocarcinoma-and-periampullary-cancers
#19
Dan Calatayud, Christian Dehlendorff, Mogens K Boisen, Jane Preuss Hasselby, Nicolai Aagaard Schultz, Jens Werner, Heike Immervoll, Anders Molven, Carsten Palnæs Hansen, Julia S Johansen
BACKGROUND: The aim of this study was to validate previously described diagnostic and prognostic microRNA expression profiles in tissue samples from patients with pancreatic cancer and other periampullary cancers. METHODS: Expression of 46 selected microRNAs was studied in formalin-fixed paraffin-embedded tissue from patients with resected pancreatic ductal adenocarcinoma (n = 165), ampullary cancer (n=59), duodenal cancer (n = 6), distal common bile duct cancer (n = 21), and gastric cancer (n = 20); chronic pancreatitis (n = 39); and normal pancreas (n = 35)...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28194276/a-case-report-of-concurrent-embryonal-rhabdomyosarcoma-and-diffuse-large-b-cell-lymphoma-in-an-adult-without-identifiable-cancer-predisposition
#20
M D Mathias, M V Ortiz, H Magnan, S R Ambati, E K Slotkin, A J Chou, M F Walsh, K Offit, C Moskowitz, A Kentsis, L H Wexler
BACKGROUND: Diffuse large B-cell lymphoma (DLBCL) is the most common form of non-Hodgkin lymphoma. Rhabdomyosarcoma, the most common soft tissue sarcoma of childhood. makes up less than 1% of solid malignancies in adults with around 400 new cases each year in the United States. They have not previously been reported concurrently. CASE PRESENTATION: A 37 year old woman presented with painful enlarging leg mass. Biopsy of the mass was consistent with embryonal rhabdomyosarcoma...
2017: Biomarker Research
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