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Melanoma antigene gene

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https://www.readbyqxmd.com/read/29138811/high-expression-of-mage-a9-contributes-to-stemness-and-malignancy-of-human-hepatocellular-carcinoma
#1
Youping Wei, Yanqin Wang, Jing Gong, Lihua Rao, Zhiwei Wu, Teng Nie, Dongling Shi, Liming Zhang
MAGE-A9, a well-characterized cancer testis antigen (CTA), belongs to a member of melanoma antigen gene (MAGE) family. In human malignancies, aberrant expression of MAGE genes correlated with poor clinical prognosis, increased tumor growth, metastases, and enrichment in stem cell populations of certain cancers. Cancer stem cells (CSCs) have been proposed to contribute to the major malignant phenotypes of liver cancer, including recurrence, metastasis and chemoresistance. However, expression and potential role of MAGE-A9 in liver cancer stem cells (LCSCs) still remain unclear...
November 9, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29106035/genetic-association-of-hla-drb1-multiple-polymorphisms-with-dermatomyositis-in-chinese-population
#2
Lin Jinming, Zhang Yongbiao, Qinglin Peng, Hanbo Yang, Jingli Shi, Mingliang Gu, Wenming Zhao, Guochun Wang
Genetic variation in human leukocyte antigen (HLA) plays an important role in the pathogenesis of dermatomyositis (DM). The aim of this study was to investigate the association of HLA class II with DM in China. 224 DM patients and 300 healthy controls were randomly enrolled at China-Japan Friendship Hospital. High resolution typing of HLA-DRB1 alleles was performed by sequencing based typing (SBT). The HLA-DQA1 and HLA-DQB1 alleles were determined by PCR sequence-specific primers (SSP). The frequencies of HLA-DRB1*09:01 (28...
November 6, 2017: HLA
https://www.readbyqxmd.com/read/29100330/protective-cellular-immunity-generated-by-cross-presenting-recombinant-overlapping-peptide-proteins
#3
Lili Cai, Jianbo Zhang, Renying Zhu, Weixing Shi, Xiaobing Xia, Mark Edwards, William Finch, Anthony Coombs, Ju Gao, Kangwen Chen, Sophie Owen, Shisong Jiang, Wenshu Lu
Priming of naive CD8(+) and CD4(+) T cells by dendritic cells (DCs) requires effective antigen presentation on both MHC class I and II molecules. We have developed a novel technology to use recombinant overlapping peptides (ROP) that stimulate both CD8(+) and CD4(+) T cell immune responses. The single chain protein of a ROP is made up of overlapping peptides linked by the target sequence (LRMK) for cathepsin S, a protease found in the endosomes of DCs. We designed synthetic genes encoding ROPs derived from ovalbumin (OVA), tuberculosis protein (CFP10-ESAT6), human papilloma virus (HPV) protein (E7) and survivin, a protein commonly over-expressed in tumour cells...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29100308/integration-of-genomic-transcriptomic-and-functional-profiles-of-aggressive-osteosarcomas-across-multiple-species
#4
Lara E Davis, Sophia Jeng, Matthew N Svalina, Elaine Huang, Janét Pittsenbarger, Emma L Cantor, Noah Berlow, Bernard Seguin, Atiya Mansoor, Shannon K McWeeney, Charles Keller
In complex, highly unstable genomes such as in osteosarcoma, targeting aberrant checkpoint processes (metabolic, cell cycle or immune) may prove more successful than targeting specific kinase or growth factor signaling pathways. Here, we establish a comparative oncology approach characterizing the most lethal osteosarcomas identified in a biorepository of tumors from three different species: human, mouse and canine. We describe the development of a genetically-engineered mouse model of osteosarcoma, establishment of primary cell cultures from fatal human tumors, and a biorepository of osteosarcoma surgical specimens from pet dogs...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29079788/depletion-of-mageb16-induces-differentiation-of-pluripotent-stem-cells-predominantly-into-mesodermal-derivatives
#5
John Antonydas Gaspar, Sureshkumar Perumal Srinivasan, Poornima Sureshkumar, Michael Xavier Doss, Jürgen Hescheler, Symeon Papadopoulos, Agapios Sachinidis
The Melanoma-associated Antigen gene family (MAGE) generally encodes for tumour antigens. We had identified that one of the MAGE gene members, Mageb16 was highly expressed in undifferentiated murine embryonic stem cells (ESCs). While the role of Mageb16 in stemness and differentiation of pluripotent stem cells is completely unknown, here, in our current study, we have demonstrated that Mageb16 (41 kDa) is distributed in cytosol and/or in surface membrane in undifferentiated ESCs. A transcriptome study performed at  differentiated short hairpin RNA (shRNA)-mediated Mageb16 knockdown (KD) ESCs and scrambled control (SCR) ESCs until a period of 22 days, revealed that Mageb16 KD ESCs mainly differentiated towards cells expressing mesodermal and cardiovascular lineage - gene markers...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29033936/coinhibitory-receptor-expression-and-immune-checkpoint-blockade-maintaining-a-balance-in-cd8-t-cell-responses-to-chronic-viral-infections-and-cancer
#6
REVIEW
Isobel S Okoye, Michael Houghton, Lorne Tyrrell, Khaled Barakat, Shokrollah Elahi
In cancer and chronic viral infections, T cells are exposed to persistent antigen stimulation. This results in expression of multiple inhibitory receptors also called "immune checkpoints" by T cells. Although these inhibitory receptors under normal conditions maintain self-tolerance and prevent immunopathology, their sustained expression deteriorates T cell function: a phenomenon called exhaustion. Recent advances in cancer immunotherapy involve blockade of cytotoxic T lymphocyte antigen-4 and programmed cell death 1 in order to reverse T cell exhaustion and reinvigorate immunity, which has translated to dramatic clinical remission in many cases of metastatic melanoma and lung cancer...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28991373/novel-enriched-pathways-in-superficial-malignant-peripheral-nerve-sheath-tumors-mpnst-and-spindle-desmoplastic-melanomas-sdm
#7
George Jour, Nicole K Andeen, Rami Al -Rohil, Phyu P Aung, Meenakshi Mehrotra, Dzifa Duose, Benjamin Hoch, Zolt Argenyi, Rajyalakshmi Luthra, Ignacio I Wistuba, Victor G Prieto
Superficial malignant peripheral nerve sheath tumor (MPNST) is a rare, soft tissue neoplasm that shares morphological features and some molecular events with spindle and desmoplastic melanoma (SDM). Herein we sought to identify molecular targets for therapy using targeted RNA/DNA sequencing and gene expression of key immunological players. DNA and RNA from formalin-fixed, paraffin-embedded (FFPE) tissue were extracted and processed. Massive high-throughput deep parallel sequencing was performed using the Oncomine comprehensive panel enabling detection of relevant SNVs, CNVs, gene fusions, and indels from 143 unique genes on the Ion torrent sequencer for clinical trial research programs...
October 9, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28978129/melanoma-antigen-a12-regulates-cell-cycle-via-tumor-suppressor-p21-expression
#8
Teruki Yanagi, Ko Nagai, Hiroshi Shimizu, Shu-Ichi Matsuzawa
Melanoma-associated antigen family A (MAGE-A) is a family of cancer/testis antigens that are expressed in malignant tumors but not in normal tissues other than the testes. MAGE-A12 is a MAGE-A family gene whose tumorigenic function in cancer cells remains unclear. Searches of the Oncomine and NextBio databases revealed that malignant tumors show up-regulation of MAGE-A12 mRNA relative to corresponding normal tissue. In PPC1 primary prostatic carcinoma cells and in HCT116 colorectal cancer cells (wild type and p53-depleted), MAGE-A12 gene knockdown using siRNA or shRNA diminishes cancer cell proliferation as assessed by cellular ATP levels, cell counting, and clonogenic assays...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28973533/the-prader-willi-syndrome-proteins-magel2-and-necdin-regulate-leptin-receptor-cell-surface-abundance-through-ubiquitination-pathways
#9
Tishani Methsala Wijesuriya, Leentje De Ceuninck, Delphine Masschaele, Matthea R Sanderson, Karin Vanessa Carias, Jan Tavernier, Rachel Wevrick
In Prader-Willi syndrome (PWS), obesity is caused by the disruption of appetite-controlling pathways in the brain. Two PWS candidate genes encode MAGEL2 and necdin, related melanoma antigen proteins that assemble into ubiquitination complexes. Mice lacking Magel2 are obese and lack leptin sensitivity in hypothalamic pro-opiomelanocortin neurons, suggesting dysregulation of leptin receptor (LepR) activity. Hypothalamus from Magel2-null mice had less LepR and altered levels of ubiquitin pathway proteins that regulate LepR processing (Rnf41, Usp8, and Stam1)...
November 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28955754/suppression-of-mage-a10-alters-the-metastatic-phenotype-of-tongue-squamous-cell-carcinoma-cells
#10
Bruna Dos Santos Mendonça, Michelle Agostini, Iara Gonçalves Aquino, Wagner Barbosa Dias, Débora Campanella Bastos, Franklin D Rumjanek
MAGE-A10 is a member of the MAGE protein family (melanoma associated antigen) which is overexpressed in cancer cells. Although MAGE-A10 has been characterized for some time and is generally associated to metastasis its function remains unknown. Here we describe experiments using as models oral squamous cell carcinoma (OSCC) cell lines displaying increasing metastatic potential (LN1 and LN2). These cell lines were transduced with lentivirus particles coding for short hairpin against MAGE-A10 mRNA. Repression of MAGE-A10 expression in LN2 cells altered their morphology and impaired growth of LN1 and LN2 cell lines...
July 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28953414/prame-gene-copy-number-variation-is-related-to-its-expression-in-multiple-myeloma
#11
Lu Yang, Ya-Zhe Wang, Hong-Hu Zhu, Yan Chang, Ling-Di Li, Wen-Min Chen, Ling-Yu Long, Yan-Huan Zhang, Yan-Rong Liu, Jin Lu, Ya-Zhen Qin
Multiple myeloma (MM) patients commonly present abnormal expression of cancer-testis antigens, which may serve as immunotherapeutic targets and prognostic factors. We previously reported that preferentially expressed antigen of melanoma (PRAME) overexpression in bone marrow mononuclear cells is related to progression in MM patients treated with non-bortezomib-containing regimens. The mechanism underlying variations in PRAME expression remains unknown. To investigate the impact of gene copy number variation (CNV) on PRAME expression, plasma cells were sorted from 50 newly diagnosed patients and 8 healthy volunteers to measure PRAME transcript levels and gene copy numbers by real-time quantitative polymerase chain reaction...
September 27, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28951354/-construction-and-verification-of-anti-mm-scfv-tp-fusion-protein-expression-vector
#12
Hao Wang, Yi-Fei Yang, Wei Wang, Bing Guan, Meng Xun, Hai Zhang, Zi-Ling Wang, Yong Zhao
OBJECTIVE: To construct an expression vector of anti-MM scFv-tP fusion protein and test its expression efficiency and function. METHODS: The truncated protamine (tP) gene sequence was added to the gene of single chain antibody against the specific antigen on the surface of malignant melanoma tumor cells using PCR. A GST-fusion expression vector was constructed and the soluable protein was expressed in the E.coli system. After cleavage and purification, the purified fusion protein was obtained...
September 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28943635/ng2-antigen-is-involved-in-leukemia-invasiveness-and-central-nervous-system-infiltration-in-mll-rearranged-infant-b-all
#13
C Prieto, B López-Millán, H Roca-Ho, R W Stam, D Romero-Moya, F J Rodríguez-Baena, A Sanjuan-Pla, V Ayllón, M Ramírez, M Bardini, P De Lorenzo, M G Valsecchi, M Stanulla, M Iglesias, P Ballerini, Á M Carcaboso, J Mora, F Locatelli, A Bertaina, L Padilla, J Carlos Rodríguez-Manzaneque, C Bueno, P Menéndez
Mixed-lineage leukemia (MLL)-rearranged (MLLr) infant B-cell acute lymphoblastic leukemia (iMLLr-B-ALL) has a dismal prognosis and is associated with a pro-B/mixed phenotype, therapy refractoriness and frequent central nervous system (CNS) disease/relapse. Neuron-glial antigen 2 (NG2) is specifically expressed in MLLr leukemias and is used in leukemia immunophenotyping because of its predictive value for MLLr acute leukemias. NG2 is involved in melanoma metastasis and brain development; however, its role in MLL-mediated leukemogenesis remains elusive...
September 25, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28939173/multiple-pro-tumorigenic-functions-of-the-human-minor-histocompatibility-antigen-1-ha-1-in-melanoma-progression
#14
Peng Xu, Jinyuan Ma, Jingjing Ma, Weigang Zhang, Sen Guo, Zhe Jian, Ling Liu, Gang Wang, Tianwen Gao, Guannan Zhu, Chunying Li
BACKGROUND: Remodeling of cytoskeleton plays an important role in development of multiple cancers, including melanoma. As a group of F-actin regulators, the Ras homology (Rho) GTPase-activating proteins (ARHGAPs) were reported by accumulating studies as a set of significant mediators in cell morphology, proliferation, migration and invasion. OBJECTIVE: To investigate the function of HMHA1 and its encode protein HA-1 in melanoma. METHODS: The mRNA microarray was performed to screen the expression of ARHGAP family genes between melanoma tissues and nevi tissues...
July 8, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28895148/critical-roles-of-hmagea2-in-induced-pluripotent-stem-cell-pluripotency-proliferation-and-differentiation
#15
Song Park, Yonghun Sung, Jain Jeong, Minjee Choi, Jinhee Lee, Wookbong Kwon, Soyoung Jang, Si Jun Park, Jae Young Kim, Sung Hyun Kim, Duhak Yoon, Zae Young Ryoo, Myoung Ok Kim
Induced pluripotent stem (iPS) cells are important for clinical application and stem cell research. Although human melanoma-associated antigen A2 (hMAGEA2) expression is known to affect differentiation in embryonic stem cells, its specific role in iPS cells remains unclear. To evaluate the function of hMAGEA2 and its characteristics in iPS cells, we produced hMAGEA2-overexpressing iPS cells from hMAGEA2-overexpressing transgenic mice. Although the iPS cells with overexpressed hMAGEA2 did not differ in morphology, their pluripotency, and self-renewal related genes (Nanog, Oct3/4, Sox2, and Stat3), expression level was significantly upregulated...
September 11, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28809608/treatment-of-patients-with-metastatic-cancer-using-a-major-histocompatibility-complex-class-ii-restricted-t-cell-receptor-targeting-the-cancer-germline-antigen-mage-a3
#16
Yong-Chen Lu, Linda L Parker, Tangying Lu, Zhili Zheng, Mary Ann Toomey, Donald E White, Xin Yao, Yong F Li, Paul F Robbins, Steven A Feldman, Pierre van der Bruggen, Christopher A Klebanoff, Stephanie L Goff, Richard M Sherry, Udai S Kammula, James C Yang, Steven A Rosenberg
Purpose Adoptive transfer of genetically modified T cells is being explored as a treatment for patients with metastatic cancer. Most current strategies use genes that encode major histocompatibility complex (MHC) class I-restricted T-cell receptors (TCRs) or chimeric antigen receptors to genetically modify CD8(+) T cells or bulk T cells for treatment. Here, we evaluated the safety and efficacy of an adoptive CD4(+) T-cell therapy using an MHC class II-restricted, HLA-DPB1*0401-restricted TCR that recognized the cancer germline antigen, MAGE-A3 (melanoma-associated antigen-A3)...
October 10, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28783722/identification-of-essential-genes-for-cancer-immunotherapy
#17
Shashank J Patel, Neville E Sanjana, Rigel J Kishton, Arash Eidizadeh, Suman K Vodnala, Maggie Cam, Jared J Gartner, Li Jia, Seth M Steinberg, Tori N Yamamoto, Anand S Merchant, Gautam U Mehta, Anna Chichura, Ophir Shalem, Eric Tran, Robert Eil, Madhusudhanan Sukumar, Eva Perez Guijarro, Chi-Ping Day, Paul Robbins, Steve Feldman, Glenn Merlino, Feng Zhang, Nicholas P Restifo
Somatic gene mutations can alter the vulnerability of cancer cells to T-cell-based immunotherapies. Here we perturbed genes in human melanoma cells to mimic loss-of-function mutations involved in resistance to these therapies, by using a genome-scale CRISPR-Cas9 library that consisted of around 123,000 single-guide RNAs, and profiled genes whose loss in tumour cells impaired the effector function of CD8(+) T cells. The genes that were most enriched in the screen have key roles in antigen presentation and interferon-γ signalling, and correlate with cytolytic activity in patient tumours from The Cancer Genome Atlas...
August 31, 2017: Nature
https://www.readbyqxmd.com/read/28767408/integration-of-genomic-transcriptomic-and-functional-profiles-of-aggressive-osteosarcomas-across-multiple-species
#18
Lara E Davis, Sophia Jeng, Matthew N Svalina, Elaine Huang, Janét Pittsenbarger, Emma L Cantor, Noah Berlow, Bernard Seguin, Atiya Mansoor, Shannon K McWeeney, Charles Keller
In complex, highly unstable genomes such as in osteosarcoma, targeting aberrant checkpoint processes (metabolic, cell cycle or immune) may prove more successful than targeting specific kinase or growth factor signaling pathways. Here, we establish a comparative oncology approach characterizing the most lethal osteosarcomas identified in a biorepository of tumors from three different species: human, mouse and canine. We describe the development of a genetically-engineered mouse model of osteosarcoma, establishment of primary cell cultures from fatal human tumors, and a biorepository of osteosarcoma surgical specimens from pet dogs...
July 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28759024/malt1-promotes-melanoma-progression-through-jnk-c-jun-signaling
#19
Y Wang, G Zhang, J Jin, S Degan, Y Tameze, J Y Zhang
Mucosa-associated lymphoma antigen 1 (MALT1) is a lymphoma oncogene that regulates signal transduction as a paracaspase and an adaptor protein. Yet, the role of MALT1 in other solid cancers such as melanoma is not well-understood. Here, we demonstrate that MALT1 is overexpressed in malignant melanoma cells, and predicts a poor disease-free survival. MALT1 inhibition via shRNA-mediated gene silencing or pharmacologically with MI-2 compound markedly reduced cell growth and migration of A2058 and A375 melanoma cell lines in vitro...
July 31, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28738020/resident-memory-t-cells-in-the-skin-mediate-durable-immunity-to-melanoma
#20
Brian T Malik, Katelyn T Byrne, Jennifer L Vella, Peisheng Zhang, Tamer B Shabaneh, Shannon M Steinberg, Aleksey K Molodtsov, Jacob S Bowers, Christina V Angeles, Chrystal M Paulos, Yina H Huang, Mary Jo Turk
Tissue-resident memory T (TRM) cells have been widely characterized in infectious disease settings; however, their role in mediating immunity to cancer remains unknown. We report that skin-resident memory T cell responses to melanoma are generated naturally as a result of autoimmune vitiligo. Melanoma antigen-specific TRM cells resided predominantly in melanocyte-depleted hair follicles and were maintained without recirculation or replenishment from the lymphoid compartment. These cells expressed CD103, CD69, and CLA (cutaneous lymphocyte antigen), but lacked PD-1 (programmed cell death protein-1) or LAG-3 (lymphocyte activation gene-3), and were capable of making IFN-γ (interferon-γ)...
April 14, 2017: Science Immunology
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