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Circulating tumor colon

Malgorzata Krzystek-Korpacka, Marek Zawadzki, Katarzyna Neubauer, Iwona Bednarz-Misa, Sabina Górska, Jerzy Wiśniewski, Wojciech Witkiewicz, Andrzej Gamian
Interleukin (IL)-7 is a cytokine essential for protective immunity, and it is considered as a promising agent for cancer immunotherapy. Recent studies, however, appear to associate IL-7 with aggressiveness of solid tumors. The IL-7 has been less studied in colorectal cancer (CRC) and conditions associated with increased risk of CRC development. To explore IL-7 status in bowel diseases, it was measured immunofluorometrically in 431 individuals (110 with CRC) by using Luminex platform. A level of IL-7 in CRC patients was significantly higher than in controls, did not differ from those with adenomas, but was lower than in both active and inactive inflammatory bowel disease (IBD) cases...
November 19, 2016: Cancer Immunology, Immunotherapy: CII
Pengyang Zhou, Nan Xiao, Jian Wang, Zhanhuai Wang, Shuchun Zheng, Siyang Shan, Jianping Wang, Jinlin Du, Jianwei Wang
Tumor-associated-fibroblasts (TAFs) are the most important host cells in the stroma and take part in extracellular matrix construction and cancer colony development. During cancer colonization, seed cells from primary tumor can reconstruct the microenvironment by recruiting circulating cancer cells and TAFs to the metastasis site. Previous studies have established that SMC1A, a subunit of cohesin, is an important trigger signal for liver metastasis in colorectal cancer. We investigated the particular effects as well as the underlying mechanism of SMC1A on TAFs recruitment during liver metastasis of colorectal cancer...
November 4, 2016: Cancer Letters
Alexandra Ion, Iris Maria Popa, Laura Maria Lucia Papagheorghe, Cristina Lisievici, Mihai Lupu, Vlad Voiculescu, Constantin Caruntu, Daniel Boda
Cutaneous T-cell lymphoma (CTCL) is the most frequently encountered type of skin lymphoma in humans. CTCL encompasses multiple variants, but the most common types are mycosis fungoides (MF) and Sezary syndrome (SS). While most cases of MF run a mild course over a period of many years, other subtypes of CTCL are very aggressive. The rapidly expanding fields of proteomics and genomics have not only helped increase knowledge concerning the carcinogenesis and tumor biology of CTCL but also led to the discovery of novel markers for targeted therapy...
2016: Disease Markers
Weige Tan, Xinhua Xie, Laisheng Li, Hailin Tang, Xigang Ye, Lun Chen, Wei Tang, Jin Gao, Lingxiao Pan, Xiaoshen Zhang, Feng Ye, Xing Li, Lu Yang, Xiaoming Xie, Wenbo Zheng
Metastasis-associated in colon cancer-1 (MACC1) promotes colorectal cancer progression and predicts prognosis. The aim of our study was to determine the diagnostic and prognostic value of preoperative serum MACC1 levels in breast cancer patients. Serum MACC1 levels were measured in 378 breast cancer patients, 120 patients with benign breast disease, and 40 healthy volunteers using an ELISA. Serum MACC1 levels were higher in breast cancer patients than patients with benign disease or healthy volunteers. Increased serum MACC1 was associated with breast cancer TNM stage (P < 0...
October 25, 2016: Oncotarget
Bianca Sylvester, Alina Porfire, Dana-Maria Muntean, Laurian Vlase, Lavinia Lupuţ, Emilia Licarete, Alina Sesarman, Marius Costel Alupei, Manuela Banciu, Marcela Achim, Ioan Tomuţă
Quality by design principles (QbD) were used to assist the formulation of prednisolone-loaded long-circulating liposomes (LCL-PLP) in order to gain a more comprehensive understanding of the preparation process. This approach enables us to improve the final product quality in terms of liposomal drug concentration, encapsulation efficiency and size, and to minimize preparation variability. A 19-run D-optimal experimental design was used to study the impact of the highest risk factors on PLP liposomal concentration (Y1- μg/ml), encapsulation efficiency (Y2-%) and size (Y3-nm)...
November 16, 2016: Journal of Liposome Research
Michela Bulfoni, Matteo Turetta, Fabio Del Ben, Carla Di Loreto, Antonio Paolo Beltrami, Daniela Cesselli
Although the enumeration of circulating tumor cells (CTC) defined as expressing both epithelial cell adhesion molecule and cytokeratins (EpCAM⁺/CK⁺) can predict prognosis and response to therapy in metastatic breast, colon and prostate cancer, its clinical utility (i.e., the ability to improve patient outcome by guiding therapy) has not yet been proven in clinical trials. Therefore, scientists are now focusing on the molecular characterization of CTC as a way to explore its possible use as a "surrogate" of tumor tissues to non-invasively assess the genomic landscape of the cancer and its evolution during treatment...
October 24, 2016: International Journal of Molecular Sciences
Cuijuan Yu, Hai Wang, Aaron Muscarella, Amit Goldstein, Huan-Chang Zeng, Yangjin Bae, Brendan H I Lee, Xiang H-F Zhang
Intra-iliac artery (IIA) injection is an efficient approach to introduce metastatic lesions of various cancer cells in animals. Compared to the widely used intra-cardiac and intra-tibial injections, IIA injection brings several advantages. First, it can deliver a large quantity of cancer cells specifically to hind limb bones, thereby providing spatiotemporally synchronized early-stage colonization events and allowing robust quantification and swift detection of disseminated tumor cells. Second, it injects cancer cells into the circulation without damaging the local tissues, thereby avoiding inflammatory and wound-healing processes that confound the bone colonization process...
September 26, 2016: Journal of Visualized Experiments: JoVE
Eugenio Zoni, Gabri van der Pluijm
The skeleton represents a common site of metastases for osteotropic cancers such as prostate and breast tumors and novel therapeutic targets and new markers for the monitoring of bone lesions are urgently needed. The formation of bone metastases is a complex process that starts at the level of the confined tumor and that is characterized by a dynamic crosstalk between the primary cancer and the future metastatic site, the bone. Factors released by the primary tumor contribute to prepare a fertile "soil", where a "pre-metastatic niche" is established prior to future colonization by cancer cells...
September 2016: Journal of Bone Oncology
Yongkun Sun, Wei Niu, Feng Du, Chunxia Du, Shuting Li, Jinwan Wang, Li Li, Fengqing Wang, Yu Hao, Chuan Li, Yihebali Chi
BACKGROUND: Anlotinib is a novel multi-target tyrosine kinase inhibitor that is designed to primarily inhibit VEGFR2/3, FGFR1-4, PDGFR α/β, c-Kit, and Ret. We aimed to evaluate the safety, pharmacokinetics, and antitumor activity of anlotinib in patients with advanced refractory solid tumors. METHODS: Anlotinib (5-16 mg) was orally administered in patients with solid tumor once a day on two schedules: (1) four consecutive weeks (4/0) or (2) 2-week on/1-week off (2/1)...
October 4, 2016: Journal of Hematology & Oncology
Arun Satelli, Jiemiao Hu, Xueqing Xia, Shulin Li
Cancer cell signaling, growth, morphology, proliferation and tumorigenic potential are largely depending on the signaling molecules present naturally in the tumor microenvironment and the identification of key molecules that drive the tumor progression is critical for the development of new modalities for the prevention of tumor progression. High concentrations of vimentin in the blood of cancer patients have been reported, however the function of blood circulating vimentin remains unknown. Here, we investigated the functional role of exogenously supplemented vimentin on colon cancer cells and examined the Wnt Signaling activation and cancer cell invasion...
2016: Journal of Cancer
Angelika Riedl, Michaela Schlederer, Karoline Pudelko, Mira Stadler, Stefanie Walter, Daniela Unterleuthner, Christine Unger, Nina Kramer, Markus Hengstschläger, Lukas Kenner, Dagmar Pfeiffer, Georg Krupitza, Helmut Dolznig
3D cancer models are used as preclinical systems to mimic physiologic drug response. We provide evidence for robust changes of proliferation and metabolic capacity in 3D by systematically analyzing spheroids of colon cancer cell lines. Spheroids showed relative lower AKT/mTOR/S6K activities compared to cells cultured in 2D. We identified spatial alterations in signaling, as the level of phospho-rpS6 decreased from the spheroid surface to the center, closely recapitulating the tumor areas around vessels in vivo These 3D-models displayed augmented anti-tumor response to AKT/mTOR/S6K- or MAPK-pathway inhibition compared to 2D...
September 23, 2016: Journal of Cell Science
Sung Won Lim, Hang Lak Lee, Kang Nyeong Lee, Dae Won Jun, In Young Kim, Eunjin Kim, Hyein Ahn, Chan Kum Park
Myeloid sarcoma (MS) is an extramedullary involvement of immature myeloid proliferation. An isolated MS is defined as a myeloblastic tumor when it arises without any concomitant circulating disease. A diagnosis of MS is established using pathologic features including infiltration of myeloblasts and strong myeloperoxidase expression with negative cytokeratin immunohistochemical staining. We report a rare case of colonic MS without any peripheral blood abnormality. If the affected patient were left untreated, the MS could evolve into acute myeloid leukemia (AML) within one year...
September 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
Sandra Casimiro, Arlindo R Ferreira, André Mansinho, Irina Alho, Luis Costa
Bone metastases ultimately result from a complex interaction between cancer cells and bone microenvironment. However, prior to the colonization of the bone, cancer cells must succeed through a series of steps that will allow them to detach from the primary tumor, enter into circulation, recognize and adhere to specific endothelium, and overcome dormancy. We now know that as important as the metastatic cascade, tumor cells prime the secondary organ microenvironment prior to their arrival, reflecting the existence of specific metastasis-initiating cells in the primary tumor and circulating osteotropic factors...
August 27, 2016: International Journal of Molecular Sciences
Lukas Klumpp, Efe C Sezgin, Franziska Eckert, Stephan M Huber
Breast cancer, lung cancer and melanoma exhibit a high metastatic tropism to the brain. Development of brain metastases severely worsens the prognosis of cancer patients and constrains curative treatment options. Metastasizing to the brain by cancer cells can be dissected in consecutive processes including epithelial-mesenchymal transition, evasion from the primary tumor, intravasation and circulation in the blood, extravasation across the blood-brain barrier, formation of metastatic niches, and colonization in the brain...
2016: International Journal of Molecular Sciences
Tie-Jun Liang, Zhong-Mei Zhou, Ying-Qing Cao, Ming-Ze Ma, Xiao-Jun Wang, Kai Jing
In this study, we have demonstrated gemcitabine (GEM)-conjugated amphiphilic biodegradable polymeric drug carriers. Our aim was to increase the chemotherapeutic potential of GEM in colon cancer by forming a unique polymer-drug conjugates. The polymer-drug conjugate micelles were nanosized with a typical spherical shape. The GEM-conjugated methoxy poly(ethylene glycol)-poly(lactic acid) (GEM-PL) exhibited a controlled release of drug in both the pH conditions. The developed GEM-PL efficiently killed the HT29 cancers cells in a typical time dependent manner...
September 6, 2016: International Journal of Pharmaceutics
Victoria Catalán, Javier Gómez-Ambrosi, Amaia Rodríguez, Beatriz Ramírez, Maitane Izaguirre, José Luis Hernández-Lizoain, Jorge Baixauli, Pablo Martí, Víctor Valentí, Rafael Moncada, Camilo Silva, Javier Salvador, Gema Frühbeck
BACKGROUND: Excess adipose tissue represents a major risk factor for the development of colon cancer with inflammation and extracellular matrix (ECM) remodeling being proposed as plausible mechanisms. The aim of this study was to investigate whether obesity can influence circulating levels of inflammation-related extracellular matrix proteins in patients with colon cancer (CC), promoting a microenvironment favorable for tumor growth. METHODS: Serum samples obtained from 79 subjects [26 lean (LN) and 53 obese (OB)] were used in the study...
2016: PloS One
David Clever, Rahul Roychoudhuri, Michael G Constantinides, Michael H Askenase, Madhusudhanan Sukumar, Christopher A Klebanoff, Robert L Eil, Heather D Hickman, Zhiya Yu, Jenny H Pan, Douglas C Palmer, Anthony T Phan, John Goulding, Luca Gattinoni, Ananda W Goldrath, Yasmine Belkaid, Nicholas P Restifo
Cancer cells must evade immune responses at distant sites to establish metastases. The lung is a frequent site for metastasis. We hypothesized that lung-specific immunoregulatory mechanisms create an immunologically permissive environment for tumor colonization. We found that T-cell-intrinsic expression of the oxygen-sensing prolyl-hydroxylase (PHD) proteins is required to maintain local tolerance against innocuous antigens in the lung but powerfully licenses colonization by circulating tumor cells. PHD proteins limit pulmonary type helper (Th)-1 responses, promote CD4(+)-regulatory T (Treg) cell induction, and restrain CD8(+) T cell effector function...
August 25, 2016: Cell
Adele Aronica, Laura Avagliano, Anna Caretti, Delfina Tosi, Gaetano Pietro Bulfamante, Marco Trinchera
BACKGROUND: CA19.9 antigen has been assumed as an abundant product of cancer cells, due to the reactivity found by immunohistochemical staining of cancer tissues with anti-CA19.9 antibody. METHODS: Expression and biosynthesis of type 1 chain Lewis antigens in the colon and the pancreas were studied by immunodetection in tissue sections and lysates, quantification of glycosyltransferase transcripts, bisulfite sequencing, and chromatin immunoprecipitation assays. RESULTS: CA19...
August 14, 2016: Biochimica et Biophysica Acta
Jean-Marc Pascussi, Julie Giraud, Emmanuelle Samalin, Fanny Grillet, Julie Pannequin
Metastatic process is described as a "dissemination of neoplastic cells in a distant secondary site, in which cells proliferate to develop a mass of cells partially differentiated". The vast majority of death in solid cancers is the consequence of metastasis development which lead to vital organ dysfunction. In the present review, either recent discoveries or controversial subjects associated with metastasis process will be discussed. Indeed epithelia-mesenchymal transition (EMT), circulating tumor cells, tumor dormancy, colonization in distant organ and cancer stem cells are tackled...
June 2016: Bulletin du Cancer
Anna Maria Rachiglio, Riziero Esposito Abate, Alessandra Sacco, Raffaella Pasquale, Francesca Fenizia, Matilde Lambiase, Alessandro Morabito, Agnese Montanino, Gaetano Rocco, Carmen Romano, Anna Nappi, R Vincenzo Iaffaioli, Fabiana Tatangelo, Gerardo Botti, Fortunato Ciardiello, Monica R Maiello, Antonella De Luca, Nicola Normanno
The circulating free tumor DNA (ctDNA) represents an alternative, minimally invasive source of tumor DNA for molecular profiling. Targeted sequencing with next generation sequencing (NGS) can assess hundred mutations starting from a low DNA input. We performed NGS analysis of ctDNA from 44 patients with metastatic non-small-cell lung carcinoma (NSCLC) and 35 patients with metastatic colorectal carcinoma (CRC). NGS detected EGFR mutations in 17/22 plasma samples from EGFR-mutant NSCLC patients (sensitivity 77...
July 19, 2016: Oncotarget
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