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https://www.readbyqxmd.com/read/28431272/specific-microrna-mrna-regulatory-network-of-colon-cancer-invasion-mediated-by-tissue-kallikrein-related-peptidase-6
#1
Earlphia Sells, Ritu Pandey, Hwudaurw Chen, Bethany A Skovan, Haiyan Cui, Natalia A Ignatenko
Metastatic colon cancer is a major cause of deaths among colorectal cancer (CRC) patients. Elevated expression of kallikrein 6 (KLK6), a member of a kallikrein subfamily of peptidase S1 family serine proteases, has been reported in CRC and is associated with low patient survival rates and poor disease prognosis. We knocked down KLK6 expression in HCT116 colon cancer cells to determine the significance of KLK6 expression for metastatic dissemination and to identify the KLK6-associated microRNAs (miRNAs) signaling networks in metastatic colon cancer...
April 18, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28428279/interaction-between-tumor-cell-surface-receptor-rage-and-proteinase-3-mediates-prostate-cancer-metastasis-to-bone
#2
Mikhail G Kolonin, Anna Sergeeva, Daniela I Staquicini, Tracey L Smith, Christy A Tarleton, Jeffrey J Molldrem, Richard L Sidman, Serena Marchiò, Renata Pasqualini, Wadih Arap
Human prostate cancer often metastasizes to bone, but the biological basis for such site-specific tropism remains largely unresolved. Recent work led us to hypothesize that this tropism may reflect pathogenic interactions between RAGE, a cell surface receptor expressed on malignant cells in advanced prostate cancer, and proteinase 3 (PR3), a serine protease present in inflammatory neutrophils and hematopoietic cells within the bone marrow microenvironment. In this study, we establish that RAGE-PR3 interaction mediates homing of prostate cancer cells to the bone marrow...
April 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28427756/human-tissue-kallikreins-blood-levels-and-response-to-radiotherapy-in-intermediate-risk-prostate-cancer
#3
Nicola J Nasser, John Thoms, Antoninus Soosaipillai, Melania Pintilie, Ri Wang, Eleftherios P Diamandis, Robert G Bristow
OBJECTIVES: Kallikreins are serine proteases over expressed in many malignancies. In this study, we measure changes in serum kallikrein (KLKs) levels during intensity-modulated radiotherapy (IMRT) in prostate cancer patients, and find potential correlations between serum kallikrein level and normal tissues toxicity during radiation. METHODS: Forty-nine patients with prostate cancer were recruited as follows: group 1, definitive standard fractionation IMRT (78Gy in 39 fractions, n=15); group 2, definitive hypofractionated IMRT (60Gy in 20 fractions, n=15); and group 3, IMRT postprostatectomy (66Gy in 33 fractions, n=19)...
April 17, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28419837/identification-and-molecular-cloning-of-novel-transcripts-of-the-human-kallikrein-related-peptidase-10-klk10-gene-using-next-generation-sequencing
#4
Panagiotis G Adamopoulos, Christos K Kontos, Andreas Scorilas
Kallikreins (KLKs) form the largest group of serine proteases in the human genome sharing many structural and functional characteristics. Multiple alternative transcripts have been reported for most human KLKs, while many of them have been found aberrantly expressed in various human malignancies, thus possessing significant prognostic or/and diagnostic value. Alternative splicing of cancer-related genes is a common cellular mechanism accounting for cancer cell transcriptome complexity, as it affects cell cycle control, proliferation, apoptosis, invasion, and metastasis...
April 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28402938/cathepsins-in-digestive-cancers
#5
REVIEW
Siyuan Chen, Hui Dong, Shiming Yang, Hong Guo
Cathepsins are lysosomal peptidases belonging to the papain family, and based on their catalytic sites, these enzymes can be divided into serine, cysteine and aspartic proteases. The studies conducted to date have identified, 15 types of cathepsins that are widely distributed in intracellular and extracellular spaces. These proteases participate in various pathological activities, including the occurrence and development of human cancers. Several recent studies suggest that cathepsins, particularly cathepsins B, D, E and L, contribute to digestive tumorigenesis...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402100/structural-studies-revealed-active-site-distortions-of-human-furin-by-a-small-molecule-inhibitor
#6
Sven O Dahms, Guan-Sheng Jiao, Manuel E Than
Proprotein Convertases (PCs) represent highly selective serine proteases that activate their substrates upon proteolytic cleavage. Their inhibition is a promising strategy for the treatment of several pathologies including cancer, atherosclerosis, hypercholesterolaemia, and infectious diseases. Here we present the first experimental complex of furin with a non substrate-like small molecule inhibitor, and the X-ray structure of the enzyme complexed to the small molecule inhibitor 1 at 1.9 Å resolution. Two molecules of inhibitor 1 were found to interact with furin...
April 12, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28396256/structural-insights-into-the-activation-mechanisms-of-human-htra-serine-proteases
#7
REVIEW
Dorota Zurawa-Janicka, Tomasz Wenta, Miroslaw Jarzab, Joanna Skorko-Glonek, Przemyslaw Glaza, Artur Gieldon, Jerzy Ciarkowski, Barbara Lipinska
Human HtrA1-4 proteins belong to the HtrA family of evolutionarily conserved serine proteases and function as important modulators of many physiological processes, including maintenance of mitochondrial homeostasis, cell signaling and apoptosis. Disturbances in their action are linked to severe diseases, including oncogenesis and neurodegeneration. The HtrA1-4 proteins share structural and functional features of other members of the HtrA protein family, however there are several significant differences in structural architecture and mechanisms of action which makes each of them unique...
May 1, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28395722/-inhibitory-effect-and-the-mechanism-of-astragalus-polysaccharide-combined-with-cisplatin-on-growth-of-inplanted-lewis-lung-carcinoma-in-mice
#8
Mengjie Zhuang, Dan Liu, Yanwen Chen, Haixia Ming, Yang Li
Objective To observe the effect of Astragalus polysaccharides (APS) combined with cisplatin (DDP) on the expressions of cytochrome C (CytC) and high temperature required serine protease A2 (Omi/HtrA2) in the mice with Lewis lung carcinoma (LLC) transplantated tumors. Methods Ninty C57BL/6J mice were randomly divided into normal control group, model group, and (50, 100, 200) μg/mL APS groups, 6 mg/kg DDP group, 3 mg/kg DDP combined with (50, 100, 200) μg/mL APS groups. Each group included 10 mice. Except the mice in the normal group, the rest mice were inoculated subcutaneously with LLC cells (1×10(7) mL) at the right fore axillary fossa to establish tumor-bearing mouse models...
April 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28368394/inhibition-of-cyclooxygenase-2-mediated-matriptase-activation-contributes-to-the-suppression-of-prostate-cancer-cell-motility-and-metastasis
#9
C-J Ko, S-W Lan, Y-C Lu, T-S Cheng, P-F Lai, C-H Tsai, T-W Hsu, H-Y Lin, H-Y Shyu, S-R Wu, H-H Lin, P-W Hsiao, C-H Chen, H-P Huang, M-S Lee
Chronic inflammation plays an important role in cancer development and progression. Cyclooxygenases-2 (COX-2) is a key enzyme in generating prostaglandins causing inflammation, is often found to be overexpressed in prostate cancer (PCa) and is correlated with PCa cell invasion and metastasis. We aim to investigate the molecular mechanism of how COX-2 promotes PCa cell invasion and metastasis and to evaluate the effect of COX-2 inhibitors in a selected model of PCa progression. Our results showed that the expression of COX-2 and Interleukin 1β (IL-1β) was upregulated in highly invasive PCa cells and was correlated with the activated levels of membrane-anchored serine protease matriptase...
April 3, 2017: Oncogene
https://www.readbyqxmd.com/read/28339463/combinations-of-serpinb5-gene-polymorphisms-and-environmental-factors-are-associated-with-oral-cancer-risks
#10
Hsiu-Ting Tsai, Ming-Ju Hsieh, Chiao-Wen Lin, Shih-Chi Su, Nae-Fang Miao, Shun-Fa Yang, Hui-Chuan Huang, Fu-Chih Lai, Yu-Fan Liu
BACKGROUND: We identified rs17071138 T/C, rs3744941 C/T, and rs8089104 T/C gene polymorphisms of SERPINB5 (mammary serine protease inhibitor) that are specific to patients with oral cancer susceptibility and their clinicopathological status. METHODOLOGY/PRINCIPAL FINDINGS: In total, 1342 participants, including 601 healthy controls and 741 patients with oral cancer, were recruited for this study. Allelic discrimination of rs17071138 T/C, rs3744941 C/T, and rs8089104 T/C of the SERPINB5 gene was assessed by a real-time PCR with a TaqMan assay...
2017: PloS One
https://www.readbyqxmd.com/read/28337383/pancreatic-cancer-screening-in-different-risk-individuals-with-family-history-of-pancreatic-cancer-a-prospective-cohort-study-in-taiwan
#11
Ming-Chu Chang, Chih-Horng Wu, Shih-Hung Yang, Po-Chin Liang, Bang-Bin Chen, I-Shiow Jan, Yu-Ting Chang, Yung-Ming Jeng
Pancreatic cancer (PC) is usually diagnosed at advanced stage. Our aim was to investigate the risk of malignant and premalignant pancreatic lesions in individuals with family history of PC. Individuals at risk of PC were enrolled prospectively in a screening program in Taiwan. All risk individuals received genetic testing of cationic trypsinogen (PRSS1) gene and the serine protease inhibitor Kazal type 1 (SPINK1) gene. They were stratified into three risk groups (high, moderate, and low) based on the family history and genetic testing...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28315357/therapeutic-potential-of-krait-venom
#12
Antony Gomes, Partha Pratim Saha, Shamik Bhattacharya, Sourav Ghosh, Aparna Gomes
Kraits belong to Elapideae and are widely distributed in East and South-East Asian countries. Krait venom possesses neurotoxins, membrane toxins, cardiotoxins, three finger toxins, metalloproteinases, cholinesterases, L-amino acid oxidases and serine proteases. The therapeutic potential of krait venom in pathophysiological conditions such as microbial and parasitic infections, cancer, arthritis, inflammation and blood coagulation disorder is discussed in this review. More intensive new research ventures are required to establish the therapeutic potential of krait venom in complex and emerging diseases...
March 14, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28303356/the-association-of-plasminogen-activator-inhibitor-type-1-pai-1-level-and-pai-1-4g-5g-gene-polymorphism-with-the-formation-and-the-grade-of-endometrial-cancer
#13
Malik Ejder Yıldırım, Savas Karakuş, Hande Küçük Kurtulgan, Hasan Kılıçgün, Serpil Erşan, Sevtap Bakır
Plasminogen activator inhibitor type 1 (PAI-1) is a serine protease inhibitor (Serpine 1), and it inhibits both tissue plasminogen activator and urokinase plasminogen activator which are important in fibrinolysis. We aimed to find whether there is a possible association between PAI-1 level, PAI-1 4G/5G polymorphism, and endometrial cancer. PAI-1 levels in peripheral blood were determined in 82 patients with endometrial carcinoma and 76 female healthy controls using an enzyme-linked immunoassay (ELISA). Then, the genomic DNA was extracted and screened by reverse hybridization procedure (Strip assay) to detect PAI 1 4G/5G polymorphism...
March 16, 2017: Biochemical Genetics
https://www.readbyqxmd.com/read/28279929/development-of-an-enzyme-linked-immunosorbent-assay-for-detection-of-cdcp1-shed-from-the-cell-surface-and-present-in-colorectal-cancer-serum-specimens
#14
Yang Chen, Brittney S Harrington, Kevin C N Lau, Lez J Burke, Yaowu He, Mary Iconomou, James S Palmer, Brian Meade, John W Lumley, John D Hooper
CUB domain containing protein 1 (CDCP1) is a transmembrane protein involved in progression of several cancers. When located on the plasma membrane, full-length 135kDa CDCP1 can undergo proteolysis mediated by serine proteases that cleave after two adjacent amino acids (arginine 368 and lysine 369). This releases from the cell surface two 65kDa fragments, collectively termed ShE-CDCP1, that differ by one carboxyl terminal residue. To evaluate the function of CDCP1 and its potential utility as a cancer biomarker, in this study we developed an enzyme-linked immunosorbent assay (ELISA) to reliably and easily measure the concentration of ShE-CDCP1 in biological samples...
May 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28262971/the-opportunity-of-precision-medicine-for-breast-cancer-with-context-sensitive-tumor-suppressor-maspin
#15
Margarida M Bernardo, Sijana H Dzinic, Maria J Matta, Ivory Dean, Lina Saker, Shijie Sheng
To improve the precision of molecular diagnosis and to develop and guide targeted therapies of breast cancer, it is essential to determine the mechanisms that underlie the specific tumor phenotypes. To this end, the application of a snapshot of gene expression profile for breast cancer diagnosis and prognosis is fundamentally challenged since the tissue-based data are derived from heterogonous cell types and are not likely to reflect the dynamics of context-dependent tumor progression and drug sensitivity. The intricate network of epithelial differentiation program can be concertedly controlled by tumor suppressor maspin, a homologue of clade B serine protease inhibitors (serpin), through its multifaceted molecular interactions in multiple subcellular localizations...
March 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28259959/overexpression-of-tmprss4-promotes-tumor-proliferation-and-aggressiveness-in-breast-cancer
#16
Xiao-Mei Li, Wen-Lou Liu, Xu Chen, Ya-Wen Wang, Duan-Bo Shi, Hui Zhang, Ran-Ran Ma, Hai-Ting Liu, Xiang-Yu Guo, Feng Hou, Ming Li, Peng Gao
Transmembrane protease serine 4 (TMPRSS4) is a novel type II transmembrane serine protease that is overexpressed in various types of human cancers and has an important function in cancer progression. However, there is a paucity of data available regarding the biological effects of TMPRSS4 on breast cancer (BC) cells and the underlying mechanisms. In this study, expression of TMPRSS4 in BC tissues was detected by immunohistochemistry. The relationship between TMPRSS4 expression and clinicopathological characteristics as well as prognosis was evaluated...
April 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28254787/serine-proteases-enhance-immunogenic-antigen-presentation-on-lung-cancer-cells
#17
Haley L Peters, Satyendra C Tripathi, Celine Kerros, Hiroyuki Katayama, Haven R Garber, Lisa S St John, Lorenzo Federico, Ismail M Meraz, Jack A Roth, Boris Sepesi, Mourad Majidi, Kathryn Ruisaard, Karen Clise-Dwyer, Jason Roszik, Don L Gibbons, John V Heymach, Stephen G Swisher, Chantale Bernatchez, Gheath Alatrash, Samir Hanash, Jeffrey J Molldrem
Immunotherapies targeting immune checkpoints have proven efficacious in reducing the burden of lung cancer in patients; however, the antigenic targets of these reinvigorated T cells remain poorly defined. Lung cancer tumors contain tumor-associated macrophages (TAM) and neutrophils, which release the serine proteases neutrophil elastase (NE) and proteinase 3 (P3) into the tumor microenvironment. NE and P3 shape the antitumor adaptive immune response in breast cancer and melanoma. In this report, we demonstrate that lung cancer cells cross-presented the tumor-associated antigen PR1, derived from NE and P3...
April 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28245763/recent-advances-of-hepsin-targeted-inhibitors
#18
Hongmok Kwon, JooYeon Han, Ki-Yong Lee, Sang-Hyun Son, Youngjoo Byun
Hepsin is a type II transmembrane serine protease (TTSP) that plays a crucial role in cell growth and development. Hepsin is highly expressed in prostate cancer (PCa) and associated with its progression and metastasis. Therefore, it has been considered as an attractive biomarker of PCa. Recently, low molecular weight inhibitors targeting hepsin have been developed. Based on the key chemical scaffold, they can be classified into four classes: Indolecarboxamidines, benzamidines, peptide-based analogs, and 2,3-dihydro-1H-perimidines...
February 27, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28238104/microbial-carcinogenic-toxins-and-dietary-anti-cancer-protectants
#19
REVIEW
Trevor W Stone, L Gail Darlington
Several toxins are known which account for the ability of some bacteria to initiate or promote carcinogenesis. These ideas are summarised and evidence is discussed for more specific mechanisms involving chymotrypsin and the bacterial chymotryptic enzyme subtilisin. Subtilisin and Bacillus subtilis are present in the gut and environment and both are used commercially in agriculture, livestock rearing and meat processing. The enzymes deplete cells of tumour suppressors such as deleted in colorectal cancer (DCC) and neogenin, so their potential presence in the food chain might represent an important link between diet and cancer...
February 25, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28206814/biomarkers-in-tumor-microenvironment-upregulation-of-fibroblast-activation-protein-%C3%AE-correlates-with-gastric-cancer-progression-and-poor-prognosis
#20
Mengmou Hu, Chengjia Qian, Ziwei Hu, Bojian Fei, Haibo Zhou
Gastric cancer is the third leading cause of cancer-related mortality worldwide. Recent evidence points to importance of cross talk between cancer cells and the surrounding stroma on gastric cancer progression. Tumor microenvironment biomarkers thus represent a new opportunity for diagnostics innovation. Reactive stromal fibroblasts selectively express the fibroblast activation protein alpha (FAP-α), a homodimeric integral membrane gelatinase that belongs to the serine protease family. We report here that FAP-α expression is significantly elevated in gastric cancer samples by more than fivefold (p < 0...
January 2017: Omics: a Journal of Integrative Biology
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