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https://www.readbyqxmd.com/read/28344878/targeting-cytokine-signaling-checkpoint-cis-activates-nk-cells-to-protect-from-tumor-initiation-and-metastasis
#1
Eva M Putz, Camille Guillerey, Kevin Kos, Kimberley Stannard, Kim Miles, Rebecca B Delconte, Kazuyoshi Takeda, Sandra E Nicholson, Nicholas D Huntington, Mark J Smyth
The cytokine-induced SH2-containing protein CIS belongs to the suppressor of cytokine signaling (SOCS) protein family. Here, we show the critical role of CIS in suppressing natural killer (NK) cell control of tumor initiation and metastasis. Cish-deficient mice were highly resistant to methylcholanthrene-induced sarcoma formation and protected from lung metastasis of B16F10 melanoma and RM-1 prostate carcinoma cells. In contrast, the growth of primary subcutaneous tumors, including those expressing the foreign antigen OVA, was unchanged in Cish-deficient mice...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28344876/2b4-sap-signaling-is-required-for-the-priming-of-naive-cd8-t-cells-by-antigen-expressing-b-cells-and-b-lymphoma-cells
#2
Yu-Hsuan Huang, Kevin Tsai, Sara Y Tan, Sohyeong Kang, Mandy L Ford, Kenneth W Harder, John J Priatel
Mutations in SH2D1A gene that encodes SAP (SLAM-associated protein) result in X-linked lymphoproliferative disease (XLP), a rare primary immunodeficiency disease defined by exquisite sensitivity to the B-lymphotropic Epstein-Barr virus (EBV) and B cell lymphomas. However, the precise mechanism of how the loss of SAP function contributes to extreme vulnerability to EBV and the development of B cell lymphomas remains unclear. Here, we investigate the hypothesis that SAP is critical for CD8(+) T cell immune surveillance of antigen (Ag)-expressing B cells or B lymphoma cells under conditions of defined T cell receptor (TCR) signaling...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28332760/cytotoxic-essential-oils-from-eryngium-campestre-and-eryngium-amethystinum-apiaceae-growing-in-central-italy
#3
Kevin Cianfaglione, Evy E Blomme, Luana Quassinti, Massimo Bramucci, Giulio Lupidi, Stefano Dall'Acqua, Filippo Maggi
Eryngium campestre and E. amethystinum are thorny herbs belonging to the Apiaceae family and spontaneously growing in stony pastures and dry meadows, preferentially on calcareous substrates. In the Mediterranean countries, these plants have been used as a food or traditional remedies to treat various ailments. In the present work, we have analysed the chemical composition of the essential oils distilled from the aerial parts by GC-FID and GC-MS, and evaluated their cytotoxic effects on a panel of human cancer cells, namely A375 (human malignant melanoma), MDA-MB 231 cells (human breast adenocarcinoma) and HCT116 cells (human colon carcinoma), by the MTT assay...
March 23, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28329597/melanoma-occurrence-under-long-term-etanercept-treatment-for-psoriasis-a-case-report
#4
Laura Atzori, Luca Pilloni, Severino Murgia, Cristina Mugheddu, Monica Pau, Franco Rongioletti
Melanoma occurrence during treatment with anti-tumor necrosis factor is considered an incidental event, although very recent studies suggest a risk. Etanercept is a fusion protein that binds the tumor necrosis factor receptor and is included among TNF inhibitors, approved for the treatment of several autoimmune diseases, such as psoriasis.We described a 79-year-old man with psoriasis, being treated with etanercept, who presented with a new brown to black macule on his right shoulder; this was immediately surgically excised...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28300603/a-comprehensive-guide-to-the-mage-family-of-ubiquitin-ligases
#5
REVIEW
Anna K Lee, Patrick Ryan Potts
Melanoma antigen (MAGE) genes are conserved in all eukaryotes and encode for proteins sharing a common MAGE homology domain. Although only a single MAGE gene exists in lower eukaryotes, the MAGE family rapidly expanded in eutherians and consists of more than 50 highly conserved genes in humans. A subset of MAGEs initially garnered interest as cancer biomarkers and immunotherapeutic targets due to their antigenic properties and unique expression pattern that is primary restricted to germ cells and aberrantly re-activated in various cancers...
March 11, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28295214/negative-regulators-of-the-rig-i-like-receptor-signaling-pathway
#6
REVIEW
Kendra M Quicke, Michael S Diamond, Mehul S Suthar
Upon recognition of specific molecular patterns on microbes, host cells trigger an innate immune response, which culminates in the production of type I interferons (IFNs), pro-inflammatory cytokines and chemokines, and restricts pathogen replication and spread within the host. At each stage of this response, there are stimulatory and inhibitory signals that regulate the magnitude, quality, and character of the response. Positive regulation promotes an antiviral state to control and eventually clear infection, whereas negative regulation dampens inflammation and prevents immune-mediated tissue damage...
March 10, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28293855/growth-hormone-receptor-knockdown-sensitizes-human-melanoma-cells-to-chemotherapy-by-attenuating-expression-of-abc-drug-efflux-pumps
#7
Reetobrata Basu, Nicholas Baumgaertel, Shiyong Wu, John J Kopchick
Melanoma remains one of the most therapy-resistant forms of human cancer despite recent introductions of highly efficacious targeted therapies. The intrinsic therapy resistance of human melanoma is largely due to abundant expression of a repertoire of xenobiotic efflux pumps of the ATP-binding cassette (ABC) transporter family. Here, we report that GH action is a key mediator of chemotherapeutic resistance in human melanoma cells. We investigated multiple ABC efflux pumps (ABCB1, ABCB5, ABCB8, ABCC1, ABCC2, ABCG1, and ABCG2) reportedly associated with melanoma drug resistance in different human melanoma cells and tested the efficacy of five different anti-cancer compounds (cisplatin, doxorubicin, oridonin, paclitaxel, vemurafenib) with decreased GH action...
March 14, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/28287407/membrane-organizing-protein-moesin-controls-treg-differentiation-and-antitumor-immunity-via-tgf-%C3%AE-signaling
#8
Ephraim A Ansa-Addo, Yongliang Zhang, Yi Yang, George S Hussey, Breege V Howley, Mohammad Salem, Brian Riesenberg, Shaoli Sun, Don C Rockey, Serhan Karvar, Philip H Howe, Bei Liu, Zihai Li
Moesin is a member of the ezrin-radixin-moesin (ERM) family of proteins that are important for organizing membrane domains and receptor signaling and regulating the migration of effector T cells. Whether moesin plays any role during the generation of TGF-β-induced Tregs (iTregs) is unknown. Here, we have discovered that moesin is translationally regulated by TGF-β and is also required for optimal TGF-β signaling that promotes efficient development of iTregs. Loss of moesin impaired the development and function of both peripherally derived iTregs and in vitro-induced Tregs...
March 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28287317/chemosensitizing-effect-of-saikosaponin-b-on-b16f10-melanoma-cells
#9
Heyao Ma, Satoru Yokoyama, Ikuo Saiki, Yoshihiro Hayakawa
Cancer cell resistance to chemotherapy is one of the obstacles for better cancer treatment, and inflammatory signaling pathways, such as NF-κB signaling pathway, have been recognized to be involved in such chemoresistance. In this study, we aim to identify a new approach for overcoming cancer chemoresistance by using natural compounds. As a result of screening by using Murine B16F10 melanoma cell line constitutively expressing NF-κB luciferase reporter gene, we identified Saikosaponin B2 as an effective inhibitor for etoposide-induced NF-κB activation in B16F10NFkB cells...
April 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28281027/proteasome-inhibitors-against-amelanotic-melanoma
#10
Justyna Sidor-Kaczmarek, Mirosława Cichorek, Jan Henryk Spodnik, Sławomir Wójcik, Janusz Moryś
The incidence of malignant melanoma, the most aggressive skin cancer, is increasing constantly. Despite new targeted therapies, the prognosis for patients with metastatic disease remains poor. Thus, there is a need for new combinational treatments, and antineoplastic agents potentially valuable in this approach are inhibitors of the ubiquitin-proteasome system (UPS). In this work, we analyze the cytotoxicity mechanisms of proteasome inhibitors (MG-132, epoxomicin, and lactacystin) in a specific form of melanoma which does not synthesize melanin-the amelanotic melanoma (Ab cells)...
March 9, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28277121/mage-a-family-serves-as-poor-prognostic-markers-and-potential-therapeutic-targets-for-epithelial-ovarian-cancer-patients-a-retrospective-clinical-study
#11
Meixiang Sang, Xiaohua Wu, Xiaojie Fan, Yishui Lian, Meijie Sang
OBJECTIVE: The aim of our study is to investigate the expression pattern and prognostic significance of melanoma-associated antigens-A (MAGE-A) family in primary epithelial ovarian cancer (EOC) patients. STUDY DESIGN: The expression of MAGE-A family members, including MAGE-A1, -A2, -A3, -A4, -A6, -A10 and -A12 was immunohistochemically detected in 82 cases of primary EOC and 10 cases of pericarcinoma ovarian tissues. The association between MAGE-A family expression and the clinicopathological parameters as well as the prognosis of primary EOC patients was analyzed...
February 28, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28263292/the-master-role-of-microphthalmia-associated-transcription-factor-in-melanocyte-and-melanoma-biology
#12
Akinori Kawakami, David E Fisher
Certain transcription factors have vital roles in lineage development, including specification of cell types and control of differentiation. Microphthalmia-associated transcription factor (MITF) is a key transcription factor for melanocyte development and differentiation. MITF regulates expression of numerous pigmentation genes to promote melanocyte differentiation, as well as fundamental genes for maintaining cell homeostasis, including genes encoding proteins involved in apoptosis (eg, BCL2) and the cell cycle (eg, CDK2)...
March 6, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28258440/comprehensive-characterization-of-genes-associated-with-the-tp53-signal-transduction-pathway-in-various-tumors
#13
Shumpei Ohnami, Keiichi Ohshima, Takeshi Nagashima, Kenichi Urakami, Yuji Shimoda, Junko Saito, Akane Naruoka, Keiichi Hatakeyama, Tohru Mochizuki, Masakuni Serizawa, Sumiko Ohnami, Masatoshi Kusuhara, Ken Yamaguchi
The TP53 signal transduction pathway is an attractive target for cancer treatments. In this study, we conducted a comprehensive molecular evaluation of 907 patients with cancer in Japan to identify genomic alterations in the TP53 pathway. TP53 mutations were frequently detected in many cancers, except melanoma, thymic tumors, gastrointestinal stromal tumors, and renal cancers. The frequencies of non-synonymous single nucleotide variants (SNVs) in the TP53 family members TP63 and TP73 were relatively low, although genes with increased frequencies of SNVs were as follows: PTEN (11...
March 3, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28248624/communication-among-melanoma-family-members
#14
Deborah J Bowen, Terrance Albrecht, Jennifer Hay, Susan Eggly, Julie Harris-Wei, Hendrika Meischke, Wylie Burke
Interventions to improve communication among family members may facilitate information flow about familial risk and preventive health behaviors. This is a secondary analysis of the effects of an interactive website intervention aimed at increasing communication frequency and agreement about health risk among melanoma families. Participants were family units, consisting of one family member with melanoma identified from a previous research study (the Case) and an additional first degree relative and a parent of a child 0-17...
March 2017: Journal of Health Communication
https://www.readbyqxmd.com/read/28221211/a-rare-case-of-ck20-ck7-double-negative-merkel-cell-carcinoma
#15
Mary D Le, Luke H OʼSteen, David S Cassarino
The authors present a case of Merkel cell carcinoma (MCC) with unique immunohistochemical staining characteristics. A 57-year-old woman presented with a firm 0.3 cm tan papule on her left nasal-labial fold that was reportedly increasing in size and bleeding. She had a history of multiple head and neck actinic keratoses, papillary thyroid carcinoma, and a family history of an uncle with melanoma. The clinical differential diagnosis was "non-melanoma skin cancer." Histological examination showed a markedly atypical-appearing basaloid neoplasm, present mostly in the dermis, with focal pagetoid spread into the epidermis...
March 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28218344/familial-melanoma-associated-with-li-fraumeni-syndrome-and-atypical-mole-syndrome-total-body-digital-photography-dermoscopy-and-confocal-microscopy
#16
Priscila Giavedoni, Marnie Ririe, Cristina Carrera, Susana Puig, Josep Malvehy
Li-Fraumeni syndrome (LFS) is a rare autosomal dominant disorder caused by a mutation in the p53 gene. Melanoma is considered to be a rare, controversial component of LFS. The aim of this study is to describe the utility of systematic screening for melanoma in patients with LFS and atypical mole syndrome. Two 28-year-old identical twin sisters with LFS and atypical moles were monitored by physical examination, total-body digital photography and dermoscopy be-tween 2006 and 2014. A total of 117, predominantly dark-brown, reticular naevi were identified on case 1 and 105 on case 2...
February 20, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28198461/risk-of-other-cancers-in-families-with-melanoma-novel-familial-links
#17
Christoph Frank, Jan Sundquist, Akseli Hemminki, Kari Hemminki
A family history of cutaneous melanoma ('melanoma') is a well-established risk factor for melanoma. However, less is known about the possible familial associations of melanoma with other discordant cancers. A risk for discordant cancer may provide useful information about shared genetic and environmental risk factors and it may be relevant background data in clinical genetic counseling. Using the Swedish Family-Cancer Database, we assessed the relative risk (RR) for any cancer in families with increasing numbers of first-degree relatives diagnosed with melanoma, including multiple melanoma, and in reverse order RR for melanoma in families of multiple discordant cancers...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28191008/the-nlrp3-and-pyrin-inflammasomes-implications-in-the-pathophysiology-of-autoinflammatory-diseases
#18
REVIEW
Carlos de Torre-Minguela, Pablo Mesa Del Castillo, Pablo Pelegrín
Inflammasomes are multiprotein complexes that critically control different aspects of innate and adaptive immunity. Among them we could highlight the release of pro-inflammatory cytokines that induce and maintain the inflammatory response. Usually, inflammasomes result from oligomerization of a nucleotide-binding domain-like receptor (NLR) after sensing different pathogenic or endogenous sterile dangerous signals; however, other proteins such as absent in melanoma 2, retinoic acid-inducible gene I, or pyrin could also form inflammasome platforms...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28189086/pterocarpan-scaffold-a-natural-lead-molecule-with-diverse-pharmacological-properties
#19
REVIEW
Chelliah Selvam, Brian C Jordan, Sandhya Prakash, Daniel Mutisya, Ramasamy Thilagavathi
Phytoalexins are substances produced by plants that act as potent inhibitors of pathogens. Pterocarpans are biologically active isoflavonoids most commonly found in the family Fabaceae that have the ability to act as phytoalexins. It is made up of a tetracyclic ring system possessing benzofuran-benzopyran. A very great number of pterocarpans have been isolated from natural sources and they are proved to have significant biological activities such as anti-microbial, anti-cancerous, anti-inflammatory and anti-malarial activities...
January 17, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28182330/heat-shock-protein-27-hsp27-hspb1-is-synthetic-lethal-to-cells-with-oncogenic-activation-of-met-egfr-and-braf
#20
John David Konda, Martina Olivero, Daniele Musiani, Simona Lamba, Maria Flavia Di Renzo
The small Heat Shock Protein of 27 KDa (HSP27) is highly expressed in many cancers and is associated with aggressive tumor behaviour, metastasis, poor prognosis and resistance to chemotherapy. We aimed at assessing the role of HSP27 in modulating responses to target therapies. We selected several oncogene-addicted cancer cell lines, which undergo either cell cycle blockade or cell death in response to agents that target the specific oncogene. Surprisingly, HSP27 suppression alone resulted in the apoptotic death of MET-addicted EBC-1 lung cancer cells, EGFR-addicted colorectal carcinoma DiFi cells and BRAF-addicted colorectal carcinoma COLO205 and OXCO-1 and melanoma COLO741 cells, all of which also undergo death when treated with the specific targeted agent...
February 9, 2017: Molecular Oncology
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