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Inflamation and cancer

Gareth W Jones, David G Hill, Simon A Jones
Tertiary lymphoid organs (TLOs) are frequently observed in tissues affected by non-resolving inflammation as a result of infection, autoimmunity, cancer, and allograft rejection. These highly ordered structures resemble the cellular composition of lymphoid follicles typically associated with the spleen and lymph node compartments. Although TLOs within tissues show varying degrees of organization, they frequently display evidence of segregated T and B cell zones, follicular dendritic cell networks, a supporting stromal reticulum, and high endothelial venules...
2016: Frontiers in Immunology
Thorbjørn Krejsgaard, Lise M Lindahl, Nigel P Mongan, Mariusz A Wasik, Ivan V Litvinov, Lars Iversen, Erik Langhoff, Anders Woetmann, Niels Odum
Cutaneous T-cell lymphomas (CTCL) are characterized by the presence of chronically inflamed skin lesions containing malignant T cells. Early disease presents as limited skin patches or plaques and exhibits an indolent behavior. For many patients, the disease never progresses beyond this stage, but in approximately one third of patients, the disease becomes progressive, and the skin lesions start to expand and evolve. Eventually, overt tumors develop and the malignant T cells may disseminate to the blood, lymph nodes, bone marrow, and visceral organs, often with a fatal outcome...
October 7, 2016: Seminars in Immunopathology
Stefania De Santis, Dale Kunde, Grazia Serino, Vanessa Galleggiante, Maria Lucia Caruso, Mauro Mastronardi, Elisabetta Cavalcanti, Nicole Ranson, Aldo Pinto, Pietro Campiglia, Angelo Santino, Rajaraman Eri, Marcello Chieppa
Dendritic cells (DCs) are professional antigen presenting cells (APCs) that in response to microbial infections generate long-lasting adaptive immune response. Following microbial uptake, DCs undergo a cascade of cellular differentiation that ultimately leads to "mature" DCs. Mature DCs produce a variety of inflammatory cytokines, including tumor necrosis factor-α (TNFβ) a key cytokine for the inflammatory cascade. In numerous studies, polyphenols, including quercetin, demonstrated their ability to suppress TNFα secretion and protect from the onset of chronic inflammatory disorders...
October 3, 2016: Oncotarget
S H Loosen, M Schmeding, C Roderburg, M Binnebösel, I Temizel, F M Mottaghy, J J W Tischendorf, F Tacke, N T Gaisa, K Hussein, U Lehmann, C Trautwein, U P Neumann, T Luedde
We report the case of a 53-year-old female patient who was transplanted with the liver of a 71-year-old male donor for advanced primary sclerosing cholangitis (PSC) and who additionally was diagnosed with a histologically non-classifiable colitis shortly before transplantation. Upon follow-up abdominal ultrasound 4 months after transplantation, a liver lesion measuring 16 × 23 mm was detected in the transplanted liver. This lesion had not been noticed immediately after transplantation and showed a pattern suspicious for malignancy in contrast-enhanced ultrasound...
October 5, 2016: Zeitschrift Für Gastroenterologie
Tandeka Magcwebeba, Pieter Swart, Sonja Swanevelder, Elizabeth Joubert, Wentzel Gelderblom
Ultraviolet B (UVB) radiation is one of the major predisposing risk factors of skin cancer. The anticancer and photoprotective effects of unoxidized rooibos (Aspalathus linearis) and honeybush (Cyclopia) herbal teas, containing high levels of dihydrochalones and xanthones, respectively, have been demonstrated in skin cancer models in vivo. In the current study, the anti-inflammatory effects of methanol and aqueous extracts of these herbal teas were investigated in a UVB/HaCaT keratinocyte model with intracellular interleukin-1α (icIL-1α) accumulation as a biomarker...
October 2, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Malgorzata Krzystek-Korpacka, Sabina Gorska, Dorota Diakowska, Bartosz Kapturkiewicz, Magdalena Podkowik, Andrzej Gamian, Iwona Bednarz-Misa
Midkine is a multifunctional cytokine and growth factor displaying proinflammatory and pro-tumorigenic activity. Its association with bowel diseases has not been fully elucidated. Our purpose was to delineate midkine expression pattern by RT-qPCR in inflamed/cancerous bowel (n=208) and whole blood (n=150) in colorectal cancer (CRC), Crohn's disease (CD), and ulcerative colitis (UC) and to evaluate midkine dynamics in early postoperative period following colorectal surgery. The expression of midkine was significantly up-regulated in stage III CRC and independently associated with lymph node metastasis...
September 28, 2016: Cytokine
Lingling Xuan, Rentao Jiang, Zhiyuan Wu, Honggan Yi, Chunsuo Yao, Qi Hou, Chunfeng Qu
BACKGROUND: Chronic inflammation is one of the important mediators of colitis-related colon cancer (CRC). Abundant mast cells (MCs) were observed in the tumor microenvironment and mediators released upon MC activation play an important role in the process of chronic inflammation. Previously, we found that activation of intestine mucosal MCs recruited and modulated the inflammatory CD11b(+)Gr1(+) cells to promote the CRC development. In the current study we investigated the effects of Vam3, a resveratrol dimer with potent anti-inflammatory effects, on CRC development...
2016: Frontiers in Pharmacology
Marie-Luise Kruse, Martin Friedrich, Alexander Arlt, Christoph Röcken, Jan-Hendrik Egberts, Susanne Sebens, Heiner Schäfer
BACKGROUND: The antioxidant transcription factor Nrf2 confers broad cytoprotection and has a dual role in tumorigenesis. Enhancing proteasome activity is one mechanism by which Nrf2 can promote cancer development, e.g., colorectal cancer. This study investigated whether this potential oncogenic effect of Nrf2 emerges already from the epithelial adaptation to persistent oxidative stress during inflammatory bowel disease (IBD). METHODS: Reactive oxygen species (ROS)-producing inflammatory myeloid cells (IMCs) from colon tissue of patients with IBD were cocultured with human NCM460 colonocytes...
September 21, 2016: Inflammatory Bowel Diseases
Navina L Chrobok, Claudia Sestito, Micha M M Wilhelmus, Benjamin Drukarch, Anne-Marie van Dam
Monocytes and macrophages are key players in inflammatory processes following an infection or tissue damage. Monocytes adhere and extravasate into the inflamed tissue, differentiate into macrophages, and produce inflammatory mediators to combat the pathogens. In addition, they take up dead cells and debris and, therefore, take part in the resolution of inflammation. The multifunctional enzyme tissue Transglutaminase (TG2, tTG) is known to participate in most of those monocyte- and macrophage-mediated processes...
September 22, 2016: Amino Acids
Shalin Shah, James E Ward, Riyue Bao, Curtis R Hall, Bruce E Brockstein, Jason J Luke
Anti-Programed Death 1 (PD-1) is standard immunotherapy for multiple cancers and the expression of one of its ligands, PD-L1, has been described in germ cell tumors (GCTs). Neither the clinical activity of anti-PD-1 nor the incidence of an immunoresponsive tumor microenvironment has been described for GCTs. A patient initially diagnosed with melanoma via fine needle aspiration was treated with one dose of antibody to PD-1. A core needle biopsy was subsequently performed to acquire sufficient tissue for molecular analysis, which led to a change in diagnosis to metastatic embryonal carcinoma...
September 16, 2016: Cancer Immunology Research
Homaira Rahimi, Richard Bell, Echoe M Bouta, Ronald W Wood, Lianping Xing, Christopher T Ritchlin, Edward M Schwarz
UNLABELLED: Proliferation of draining lymphatic vessels coupled with dynamic changes in lymph node volume and flow are characteristic features in rheumatoid arthritis (RA). Furthermore, impaired lymph egress from inflamed synovium is associated with joint flare in murine models of inflammatory-erosive arthritis. Unfortunately, advances towards a greater understanding of lymphatic changes in RA pathogenesis have been slow due to the absence of outcome measures to quantify lymphatic function in vivo...
2016: Arthritis Research & Therapy
Yasunari Nakamoto
Hepatocellular carcinoma (HCC) is one of the most common causes of cancer death worldwide. It usually arises based on a background of chronic liver diseases, defined as the hypercarcinogenic state. The current treatment options for HCC ranging from locoregional treatments to chemotherapies, including sorafenib, effectively regulate the limited sizes and numbers of the nodules. However, these treatments remain unsatisfactory because they have insufficient antitumor effects on the large and numerous nodules associated with HCC and because of a high recurrence rate in the surrounding inflamed liver...
August 25, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
Aliyah M Weinstein, Walter J Storkus
Peripheral node addressin (PNAd) marks high endothelial venules (HEV), which are crucial for the recruitment of lymphocytes into lymphoid organs in non-mucosal tissue sites. PNAd is a sulfated and fucosylated glycoprotein recognized by the prototypic monoclonal antibody, MECA-79. PNAd is the ligand for L-selectin, which is expressed on the surface of naive and central memory T cells, where it mediates leukocyte rolling on vascular endothelial surfaces. Although PNAd was first identified in the HEV of peripheral lymph nodes, recent work suggests a critical role for PNAd in the context of chronic inflammatory diseases, where it can be used as a marker for the formation of tertiary lymphoid organs (TLOs)...
2016: Frontiers in Immunology
M Y Zeng, N Inohara, G Nuñez
The gut microbiota has diverse and essential roles in host metabolism, development of the immune system and as resistance to pathogen colonization. Perturbations of the gut microbiota, termed gut dysbiosis, are commonly observed in diseases involving inflammation in the gut, including inflammatory bowel disease, infection, colorectal cancer and food allergies. Importantly, the inflamed microenvironment in the gut is particularly conducive to blooms of Enterobacteriaceae, which acquire fitness benefits while other families of symbiotic bacteria succumb to environmental changes inflicted by inflammation...
August 24, 2016: Mucosal Immunology
Sarah Dimeloe, Anne-Valérie Burgener, Jasmin Graehlert, Christoph Hess
T lymphocytes are a critical component of the adaptive immune system mediating protection against infection and malignancy, but also implicated in many immune pathologies. Upon recognition of specific antigens T cells clonally expand, traffic to inflamed sites and acquire effector functions, such as the capacity to kill infected and malignantly transformed cells and secrete cytokines to coordinate the immune response. These processes have significant bioenergetic and biosynthetic demands, which are met by dynamic changes in T cell metabolism, specifically increases in glucose uptake and metabolism; mitochondrial function; amino acid uptake, and cholesterol and lipid synthesis...
August 1, 2016: Immunology
Jessica Nakhlé, Valérie Pierron, Anne-Laure Bauchet, Pascale Plas, Amath Thiongane, Florence Meyer-Losic, Fabien Schmidlin
The infiltration of myeloid cells helps tumors to overcome immune surveillance and imparts resistance to cancer immunotherapy. Thus, strategies to modulate the effects of these immune cells may offer a potential therapeutic benefit. We report here that tasquinimod, a novel immunotherapy which targets S100A9 signaling, reduces the immunosuppressive properties of myeloid cells in preclinical models of bladder cancer (BCa). As single anticancer agent, tasquinimod treatment was effective in preventing early stage tumor growth, but did not achieve a clear antitumor effect in advanced tumors...
June 2016: Oncoimmunology
Katherine J Strissel, Dequina A Nicholas, Myriam Castagne-Charlotin, Naomi Ko, Gerald V Denis
African-American women, a historically understudied and underserved group, have increased risk for triple-negative breast cancer and obesity-associated disease. Obesity-associated metabolic diseases share a common link of low grade chronic inflammation, but not all obese women have metabolic disturbances or are inflamed. One goal of our ongoing research is to identify blood biomarkers that can predict increased risk of breast cancer in women who have obesity or metabolic dysfunction. However, vulnerable populations that stand to benefit most from advances in biomedical research are also underrepresented in research studies...
2016: Clinical Medicine Insights. Women's Health
Candaş Erçetin, Ahmet Cem Dural, Yaşar Özdenkaya, Özlem Dural, Huriye Gözde Muhafız Dada, Gülçin Yeğen, Yersu Kapran, Yeşim Erbil
We report a 32-year-old patient who underwent laparoscopy with classical symptoms and signs of acute appendicitis. An inflamed, edematous and non-perforated appendix, also a large amount gelatinous ascites, omental and peritoneal implants were seen. Appendectomy was performed and multiple biopsies were taken from omentum and peritoneum for definitive diagnosis. Histopathologic diagnosis was a metastatic gastric signet-ring cell carcinoma (GSRCC) involving appendix and other specimens. A flat lesion involving corpus to antrum was diagnosed by gastroscopy and GSRCC was verified histopathologically in a tertiary centre and the case evaluated as stage IV gastric carcinoma...
2016: Ulusal Cerrahi Dergisi
Hyo Jin Park, Ji Hoon Oh, Sang-Jun Ha
Regulatory T (Treg) cells, which express Foxp3 as a transcription factor, are subsets of CD4(+) T cells. Treg cells play crucial roles in immune tolerance and homeostasis maintenance by regulating the immune response. The primary role of Treg cells is to suppress the proliferation of effector T (Teff) cells and the production of cytokines such as IFN-γ, TNF-α, and IL-2. It has been demonstrated that Treg cells' ability to inhibit the function of Teff cells is enhanced during persistent pathogen infection and cancer development...
2016: Journal of Visualized Experiments: JoVE
Takeshi Yamashina, Ryoji Takada, Noriya Uedo, Tomofumi Akasaka, Noboru Hanaoka, Yoji Takeuchi, Koji Higashino, Tatsuya Ioka, Ryu Ishihara, Teruki Teshima, Kinji Nishiyama, Hiroyasu Iishi
In this case series, three consecutive patients with unresectable locally advanced pancreatic cancer (ULAPC) underwent capsule endoscopy (CE) before and after chemoradiotherapy (CRT) to evaluate duodenal and jejunal mucosa, and to examine the relationship between CE findings and dose distribution. CE after CRT showed duodenitis and proximal jejunitis in all three patients. The most inflamed region was the third part of the duodenum, and in dose distribution, this was the closest region to the center of irradiation...
July 2016: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
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