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https://www.readbyqxmd.com/read/28330247/production-of-glucosinolates-phenolic-compounds-and-associated-gene-expression-profiles-of-hairy-root-cultures-in-turnip-brassica-rapa-ssp-rapa
#1
Ill-Min Chung, Kaliyaperumal Rekha, Govindasamy Rajakumar, Muthu Thiruvengadam
Turnip (Brassica rapa ssp. rapa) is an important vegetable crop producing glucosinolates (GSLs) and phenolic compounds. The GSLs, phenolic compound contents and transcript levels in hairy root cultures, as well as their antioxidant, antimicrobial and anticancer activity were studied in turnip. Transgenic hairy root lines were confirmed by polymerase chain reaction (PCR) and reverse transcription-PCR. GSLs levels (glucoallysin, glucobrassicanapin, gluconasturtiin, glucobrassicin, 4-methoxyglucobrassicin, neoglucobrassicin and 4-hydroxyglucobrassicin) and their gene expression levels (BrMYB28, BrMYB29, BrMYB34, BrMYB51, BrMYB122, CYP79 and CYP83) significantly increased in hairy roots compared with that in non-transformed roots...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330128/over-expression-of-notch1-as-a-biomarker-for-invasive-breast-ductal-carcinoma
#2
Mahdi Paryan, Rezvan Tavakoli, Seyed Mohammad Ali Hosseini Rad, Neda Feizi, Fereshteh Kamani, Ehsan Mostafavi, Samira Mohammadi-Yeganeh
Breast cancer is the leading cause of cancer-related death in women worldwide. Invasive ductal carcinoma (IDC) is the most frequent invasive form of breast cancer followed by metastasis. There is no accepted marker for distinguishing this form from other less aggressive forms of breast cancer. Therefore, finding new markers especially molecularly detectable ones are noteworthy. It has been shown that NOTCH1 has been overexpressed in the patients with breast cancer, but no study has investigated the expression of NOTCH1 and its correlation with other molecular and hormonal markers of breast cancer so far...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328502/spatial-statistics-for-segmenting-histological-structures-in-h-e-stained-tissue-images
#3
Luong Nguyen, A Burak Tosun, Jeffrey Fine, Adrian Lee, D Lansing Taylor, Chakra Chennubhotla
Segmenting a broad class of histological structures in transmitted light and/or fluorescence-based images is a prerequisite for determining the pathological basis of cancer, elucidating spatial interactions between histological structures in tumor microenvironments (e.g. tumor infiltrating lymphocytes), facilitating precision medicine studies with deep molecular profiling, and providing an exploratory tool for pathologists. Our paper focuses on segmenting histological structures in hematoxylin and eosin (H&E) stained images of breast tissues, e...
March 16, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28327201/detecting-gene-signature-activation-in-breast-cancer-in-an-absolute-single-patient-manner
#4
E R Paquet, R Lesurf, A Tofigh, V Dumeaux, M T Hallett
BACKGROUND: The ability to reliably identify the state (activated, repressed, or latent) of any molecular process in the tumor of a patient from an individual whole-genome gene expression profile obtained from microarray or RNA sequencing (RNA-seq) promises important clinical utility. Unfortunately, all previous bioinformatics tools are only applicable in large and diverse panels of patients, or are limited to a single specific pathway/process (e.g. proliferation). METHODS: Using a panel of 4510 whole-genome gene expression profiles from 10 different studies we built and selected models predicting the activation status of a compendium of 1733 different biological processes...
March 21, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28325261/cdk4-6-inhibitors-in-her2-positive-breast-cancer
#5
REVIEW
Silvia Paola Corona, Andrea Ravelli, Daniele Cretella, Maria Rosa Cappelletti, Laura Zanotti, Martina Dester, Angela Gobbi, Pier Giorgio Petronini, Daniele Generali
Notwithstanding the continuous progress made in cancer treatment in the last 20 years, and the availability of new targeted therapies, metastatic Breast Cancer (BC) is still incurable. Targeting the cell cycle machinery has emerged as an attractive strategy to tackle cancer progression, showing very promising results in the preclinical and clinical settings. The first selective inhibitors of CDK4/6 received breakthrough status and FDA approval in combination with letrozole (February 2015) and fulvestrant (February 2016) as first-line therapy in ER-positive advanced and metastatic BC...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28325191/genetics-of-gastric-cancer
#6
REVIEW
Matthew S Strand, Albert Craig Lockhart, Ryan C Fields
Gastric cancer represents a major cause of cancer mortality worldwide despite a declining incidence. New molecular classification schemes developed from genomic and molecular analyses of gastric cancer have provided a framework for understanding this heterogenous disease, and early findings suggest these classifications will be relevant for designing and implementing new targeted therapies. The success of targeted therapy and immunotherapy in breast cancer and melanoma, respectively, has not been duplicated in gastric cancer, but trastuzumab and ramucirumab have demonstrated efficacy in select populations...
April 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/28325150/managing-expectations-in-the-transition-to-proof-of-concept-studies
#7
Thomas Kieber-Emmons, Issam Makhoul, Angela Pennisi, Eric R Siegel, Peter D Emanuel, Bejotaloh Monzavi-Karbassi, Zenon Steplewski, J Thaddeus Beck, Laura F Hutchins
BACKGROUND: As we are moving away from the traditional chemotherapy era to targeted therapy, the validity of old assessment paradigms associated with therapeutics are being raised in the context of immunotherapy. The old paradigm required elaborate assessment of toxicity with no expectation of efficacy in early phase trials. Safety data from Phase 1 and 2 studies with many immunotherapeutics show that they display limited toxicities and draw attention to the need to demonstrate efficacy in the early evaluation of new agents...
March 21, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28323900/long-term-exposure-to-estrogen-enhances-chemotherapeutic-efficacy-potentially-through-epigenetic-mechanism-in-human-breast-cancer-cells
#8
Yu-Wei Chang, Kamaleshwar P Singh
Chemotherapy is the most common clinical option for treatment of breast cancer. However, the efficacy of chemotherapy depends on the age of breast cancer patients. Breast tissues are estrogen responsive and the levels of ovarian estrogen vary among the breast cancer patients primarily between pre- and post-menopausal age. Whether this age-dependent variation in estrogen levels influences the chemotherapeutic efficacy in breast cancer patients is not known. Therefore, the objective of this study was to evaluate the effects of natural estrogen 17 beta-estradiol (E2) on the efficacy of chemotherapeutic drugs in breast cancer cells...
2017: PloS One
https://www.readbyqxmd.com/read/28322779/semisynthetic-oleanane-triterpenoids-inhibit-migration-and-invasion-of-human-breast-cancer-cells-through-downregulated-expression-of-the-itgb1-ptk2-pxn-pathway
#9
Natalia Lisiak, Anna Paszel-Jaworska, Ewa Toton, Błażej Rubiś, Martyna Pakuła, Barbara Bednarczyk-Cwynar, Lucjusz Zaprutko, Maria Rybczyńska
This paper reports a study on the role of two synthetic derivatives of oleanolic acid (OA), HIMOXOL and Br-HIMOLID, in the regulation of cell migration and invasion and the underlying molecular mechanisms of breast cancer cells. The effect of the compounds on four breast cancer cell lines (MCF7, MDA-MB-231, MDA-MB-468, and T-47D) and also on noncancerous breast cells, MCF-12A, was reported. The compounds had no effect on the migration of MCF-12A cells. However, both the derivatives revealed a higher cytotoxicity than the maternal compound OA, and in sub-cytotoxic concentrations, they decreased the migration of MCF7, MDA-MB-231, and MDA-MB-468 breast cancer cells and also the invasion of MCF7 and MDA-MB-231 cells; although, the derivatives had no effect on the migration and invasion of T-47D cells...
March 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28322342/therapy-targeted-to-the-metastatic-niche-is-effective-in-a-model-of-stage-iv-breast-cancer
#10
Byunghee Yoo, Amol Kavishwar, Ping Wang, Alana Ross, Pamela Pantazopoulos, Michael Dudley, Anna Moore, Zdravka Medarova
Treatment of stage IV metastatic breast cancer patients is limited to palliative options and represents an unmet clinical need. Here, we demonstrate that pharmacological inhibition of miRNA-10b - a master regulator of metastatic cell viability - leads to elimination of distant metastases in a mouse model of metastatic breast cancer. This was achieved using the miRNA-10b inhibitory nanodrug, MN-anti-miR10b, which consists of magnetic nanoparticles, conjugated to LNA-based miR-10b antagomirs. Intravenous injection of MN-anti-miR10b into mice bearing lung, bone, and brain metastases from breast cancer resulted in selective accumulation of the nanodrug in metastatic tumor cells...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321773/salivary-duct-carcinoma-an-update-on-morphologic-mimics-and-diagnostic-use-of-androgen-receptor-immunohistochemistry
#11
Aaron M Udager, Simion I Chiosea
More than 15 years ago, seminal studies by Dr. E. Leon Barnes and colleagues transformed our understanding of salivary duct carcinoma (SDC) and, in doing so, paved the way for contemporary diagnostic and therapeutic approaches to this aggressive salivary adenocarcinoma. In particular, attention to the apocrine phenotype of SDC and expression of androgen receptor (AR) by immunohistochemistry has improved the diagnostic accuracy and showed how SDC can be reliably distinguished from its morphologic mimics (i.e...
March 20, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28320353/genome-independent-hypoxic-repression-of-estrogen-receptor-alpha-in-breast-cancer-cells
#12
Mercè Padró, Raymond J Louie, Brian V Lananna, Adam J Krieg, Luika A Timmerman, Denise A Chan
BACKGROUND: About 75-80% of breast tumors express the estrogen receptor alpha (ER-α) and are treated with endocrine-target therapeutics, making this the premier therapeutic modality in the breast cancer clinic. However, acquired resistance is common and about 20% of resistant tumors loose ER-α expression via unknown mechanisms. Inhibition of ER-α loss could improve endocrine therapeutic efficacy, benefiting a significant number of patients. Here we test whether tumor hypoxia might commonly produce ER-α loss...
March 20, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28319275/mrf-ann-a-machine-learning-approach-for-automated-er-scoring-of-breast-cancer-immunohistochemical-images
#13
T Mungle, S Tewary, D K DAS, I Arun, B Basak, S Agarwal, R Ahmed, S Chatterjee, C Chakraborty
Molecular pathology, especially immunohistochemistry, plays an important role in evaluating hormone receptor status along with diagnosis of breast cancer. Time-consumption and inter-/intraobserver variability are major hindrances for evaluating the receptor score. In view of this, the paper proposes an automated Allred Scoring methodology for estrogen receptor (ER). White balancing is used to normalize the colour image taking into consideration colour variation during staining in different labs. Markov random field model with expectation-maximization optimization is employed to segment the ER cells...
March 20, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28318327/pathologic-diagnosis-of-breast-cancer-patients-evolution-of-the-traditional-clinical-pathologic-paradigm-toward-precision-cancer-therapy
#14
B M Turner, D G Hicks
We present an updated account of breast cancer treatment and of progress toward "precision" cancer therapy; we focus on new developments in diagnostic molecular pathology and breast cancer that have emerged during the past 2 years. Increasing awareness of new prognostic and predictive methodologies, and introduction of next generation sequencing has increased understanding of both tumor biology and clinical behavior, which offers the possibility of more appropriate therapeutic choices. It remains unclear which of these testing methodologies provides the most informative and cost-effective actionable results for predictive and prognostic pathology...
March 20, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28316571/anti-cancerous-potential-of-polysaccharide-fractions-extracted-from-peony-seed-dreg-on-various-human-cancer-cell-lines-via-cell-cycle-arrest-and-apoptosis
#15
Fang Zhang, Jun-Jun Shi, Kiran Thakur, Fei Hu, Jian-Guo Zhang, Zhao-Jun Wei
In this study, four homo/heterogenous polysaccharides (HBSS, CHSS, DASS, and CASS) extracted from peony seed dreg with respective molecular weights of 3467, 4677, 229, and 56 kDa were evaluated for anti-cancerous attributes in prostate cancer cells (Pc-3), colon cancer cells (HCT-116), human breast cancer cells (MCF-7), cervical cancer (Hela cells) and human embryonic kidney 293 (HEK 293) cells as control. Among them, CASS and DASS extracted by alkali, consisted of 34.43% Gal, 26.39% Ara, 21.80% Glc and 35...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28315938/the-relationship-between-breast-cancer-molecular-subtypes-and-mast-cell-populations-in-tumor-microenvironment
#16
Anna Glajcar, Joanna Szpor, Agnieszka Pacek, Katarzyna Ewa Tyrak, Florence Chan, Joanna Streb, Diana Hodorowicz-Zaniewska, Krzysztof Okoń
Mast cells (MCs) are a part of the innate immune system. The MC functions toward cancer are partially based on the release of chymase and tryptase. However, the MC effect on breast cancer is controversial. The aim of our study was to investigate the presence of MCs in breast cancer tumors of different molecular subtypes and their relationships with other pathological prognostic factors. Tryptase- and chymase-positive mast cell densities were evaluated by immunohistochemistry in 108 primary invasive breast cancer tissue samples...
March 18, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28315854/mutation-of-n-linked-glycosylation-in-epcam-affected-cell-adhesion-in-breast-cancer-cells
#17
Xue Liu, Jiujiao Gao, Yan Sun, Dandan Zhang, Tingjiao Liu, Qiu Yan, Xuesong Yang
EpCAM expression is elevated in breast cancer tissue, and correlates with the cancer metastasis and cell adhesion. Although EpCAM glycosylation is supposed to be associated with its function, the contribution of N-glycosylation to its function remains unclear. Here we analyzed cell adhesion ability of EpCAM in breast cancer cells. The results showed that EpCAM expression was associated with cell adhesion and N-glycosylation mutation of EpCAM decreased adhesion capacity. N-glycosylation mutation of EpCAM was correlated with lower levels of integrin β1 and fibronectin...
March 18, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/28315432/splicing-factors-of-sr-and-hnrnp-families-as-regulators-of-apoptosis-in-cancer
#18
Hanna Kędzierska, Agnieszka Piekiełko-Witkowska
SR and hnRNP proteins were initially discovered as regulators of alternative splicing: the process of controlled removal of introns and selective joining of exons through which multiple transcripts and, subsequently, proteins can be expressed from a single gene. Alternative splicing affects genes involved in all crucial cellular processes, including apoptosis. During cancerogenesis impaired apoptotic control facilitates survival of cells bearing molecular aberrations, contributing to their unrestricted proliferation and chemoresistance...
March 14, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28315066/failure-patterns-according-to-molecular-subtype-in-patients-with-invasive-breast-cancer-following-postoperative-adjuvant-radiotherapy-long-term-outcomes-in-contemporary-clinical-practice
#19
Yu Jin Lim, Sea-Won Lee, Noorie Choi, Jeanny Kwon, Keun-Yong Eom, Eunyoung Kang, Eun-Kyu Kim, Sung-Won Kim, Jee Hyun Kim, Yu Jung Kim, Se Hyun Kim, So Yeon Park, Jae-Sung Kim, In Ah Kim
PURPOSE: Although gene expression profiling provides critical information, knowledge remains limited regarding the differential effects of molecular subtype on clinical course. This study evaluated the impact of molecular status on long-term patterns of failure in patients with non-metastatic breast cancer. METHODS: We analyzed data from 1181 individuals with invasive breast cancer undergoing surgery plus PORT from 2003 to 2011. Molecular subtypes were defined as luminal A (LA), luminal B (LB)-HER2(-), LB-HER2(+), HER2, and triple-negative (TN) based on the 2013 St...
March 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28314842/performance-of-mid-treatment-breast-ultrasound-and-axillary-ultrasound-in-predicting-response-to-neoadjuvant-chemotherapy-by-breast-cancer-subtype
#20
Rosalind P Candelaria, Roland L Bassett, William Fraser Symmans, Maheshwari Ramineni, Stacy L Moulder, Henry M Kuerer, Alastair M Thompson, Wei Tse Yang
BACKGROUND: The primary objective was to determine whether mid-treatment ultrasound measurements of index breast tumors and index axillary nodes of different cancer subtypes associate with residual cancer burden (RCB). METHODS: Patients with invasive breast cancer who underwent neoadjuvant chemotherapy and had pre-treatment and mid-treatment breast and axillary ultrasound were included in this single-institution, retrospective cohort study. Linear regression analysis assessed associations between RCB with (a) change in index breast tumor size, (b) change in index node size, and (c) absolute number of abnormal nodes at mid-treatment...
March 17, 2017: Oncologist
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