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https://www.readbyqxmd.com/read/28107182/the-nitrobenzoxadiazole-derivative-mc3181-blocks-melanoma-invasion-and-metastasis
#1
Anastasia De Luca, Debora Carpanese, Maria Cristina Rapanotti, Tara Mayte Suarez Viguria, Maria Antonietta Forgione, Dante Rotili, Chiara Fulci, Egidio Iorio, Luigi Quintieri, Sergio Chimenti, Luca Bianchi, Antonio Rosato, Anna Maria Caccuri
The novel nitrobenzoxadiazole (NBD) derivative MC3181 is endowed with remarkable therapeutic activity in mice bearing both sensitive and vemurafenib-resistant human melanoma xenografts. Here, we report that subtoxic concentrations of this compound significantly reduced invasiveness of BRAF-V600D mutated WM115 and WM266.4 melanoma cell lines derived from the primary lesion and related skin metastasis of the same patient, respectively. The strong antimetastatic activity of MC3181 was observed in both 2D monolayer cultures and 3D multicellular tumor spheroids, and confirmed in vivo by the significant decrease in the number of B16-F10 melanoma lung metastases in drug-treated mice...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28105694/lack-of-xage-1b-and-ny-eso-1-in-metastatic-lymph-nodes-may-predict-the-potential-survival-of-stage-iii-melanoma-patients
#2
Mariko Mori, Takeru Funakoshi, Kaori Kameyama, Yutaka Kawakami, Eiichi Sato, Eiichi Nakayama, Masayuki Amagai, Keiji Tanese
The cancer-testis antigens (CTA) are a large family of tumor-associated antigens expressed by a variety of cancer cells and primitive germ cells of the adult testis and placenta. These tumor-restricted expressing patterns suggest that CTA would be ideal targets for tumor-specific immunotherapy. XAGE-1 is a CTA that was originally identified by computer-based screening, and four transcription variants, XAGE-1a, -1b, -1c and -1d, have been characterized to date. Although the presence of XAGE-1 transcripts has been reported in various cancers, the expression of XAGE-1b in melanoma has not been fully characterized...
January 20, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28099368/recurrence-behavior-in-early-stage-cutaneous-melanoma-pattern-timing-survival-and-influencing-factors
#3
Faruk Tas, Kayhan Erturk
Nearly one-third of all melanoma patients will experience disease recurrence and the majority of the relapses eventually develop metastatic disease as a consequence of disease progression in the early-stage melanoma patients. Although the factors that predict the recurrence have already been described, very few numbers of studies have investigated the natural recurrence history of melanoma. In this retrospective study, we analyzed the time until recurrence along with the patterns and outcomes of the recurrences; thus, we aimed to understand the possible factors that might influence the recurrence course in early-stage cutaneous melanoma at the first relapse...
January 17, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28096290/the-epidermal-polarity-protein-par3-is-a-non-cell-autonomous-suppressor-of-malignant-melanoma
#4
Melina Mescher, Peter Jeong, Sina K Knapp, Matthias Rübsam, Michael Saynisch, Marina Kranen, Jennifer Landsberg, Max Schlaak, Cornelia Mauch, Thomas Tüting, Carien M Niessen, Sandra Iden
Melanoma, an aggressive skin malignancy with increasing lifetime risk, originates from melanocytes (MCs) that are in close contact with surrounding epidermal keratinocytes (KCs). How the epidermal microenvironment controls melanomagenesis remains poorly understood. In this study, we identify an unexpected non-cell autonomous role of epidermal polarity proteins, molecular determinants of cytoarchitecture, in malignant melanoma. Epidermal Par3 inactivation in mice promotes MC dedifferentiation, motility, and hyperplasia and, in an autochthonous melanoma model, results in increased tumor formation and lung metastasis...
January 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28087048/-characteristics-and-risk-factors-for-recurrence-of-cutaneous-squamous-cell-carcinoma-with-conventional-surgery-and-surgery-with-delayed-intraoperative-margin-assessment
#5
Judith Domínguez-Cherit, Georgina Rodríguez-Gutiérrez, Verónica Narváez Rosales, Sonia Toussaint Caire, Verónica Fonte Avalos
BACKGROUND: Non-melanoma skin cancer includes basal cell carcinoma and squamous cell carcinoma (SCC). Basal cell carcinoma is the most common and least aggressive but in a low percentage of cases, despite appropriate wide surgical margins, it can be aggressive, producing local invasion, recurrences and distance metastasis. SCC has a more aggressive behaviour invading first the skin, the lymph nodes and less frequently produces distance metastasis OBJECTIVE: To identify the characteristics of recurrent SCC and frequency of new SCC after conventional surgical and primary closure or closure delayed until a histological reporting of tumour-free surgical margins, in order to achieve a better surgical option, in our Mexican population...
January 10, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28012339/rare-nodular-malignant-melanoma-of-the-heel-in-the-caribbean-a-case-report
#6
Wayne A Warner, Vandana Devika Sookdeo, Srikanth Umakanthan, Kevin Sarran, Lemuel Pran, Maurice Fortuné, Wesley Greaves, Sharda Narinesingh, Dave Harnanan, Ravi Maharaj
INTRODUCTION: Malignant melanoma of the heel is a rare melanoma subtype with incidence rates that reflect the complex relationship between sun exposure at certain geographic locations, individual melanin levels and overall melanoma risk. It is oftentimes characterized by poor prognosis because of delays in presentation resulting in longitudinal tumor invasion, lymph node involvement and metastasis. PRESENTATION OF CASE: A 59-year-old woman was admitted to the Eric Williams Medical Sciences Complex, Trinidad and Tobago with a 5mm pruritic lesion on her left heel...
November 27, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28012127/fluorescein-sodium-guided-resection-of-cerebral-metastases-an-update
#7
Julius Höhne, Christoph Hohenberger, Martin Proescholdt, Markus J Riemenschneider, Christina Wendl, Alexander Brawanski, Karl-Michael Schebesch
BACKGROUND: Cerebral metastasis (CM) is the most common malignancy affecting the brain. In patients eligible for surgery, complete tumor removal is the most important predictor of overall survival and neurological outcome. The emergence of surgical microscopes fitted with a fluorescein-specific filter have facilitated fluorescein-guided microsurgery and identification of tumor tissue. In 2012, we started evaluating fluorescein (FL) with the dedicated microscope filter in cerebral metastases (CM)...
February 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28000788/in-vivo-label-free-photoacoustic-flow-cytography-and-on-the-spot-laser-killing-of-single-circulating-melanoma-cells
#8
Yun He, Lidai Wang, Junhui Shi, Junjie Yao, Lei Li, Ruiying Zhang, Chih-Hsien Huang, Jun Zou, Lihong V Wang
Metastasis causes as many as 90% of cancer-related deaths, especially for the deadliest skin cancer, melanoma. Since hematogenous dissemination of circulating tumor cells is the major route of metastasis, detection and destruction of circulating tumor cells are vital for impeding metastasis and improving patient prognosis. Exploiting the exquisite intrinsic optical absorption contrast of circulating melanoma cells, we developed dual-wavelength photoacoustic flow cytography coupled with a nanosecond-pulsed melanoma-specific laser therapy mechanism...
December 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27984232/balloon-cell-melanoma-and-its-metastasis-a-rare-entity
#9
Sonia Chavez-Alvarez, Alejandra Villarreal-Martinez, Ivett Miranda-Maldonado, Jorge Ocampo-Candiani, Veronica Garza-Rodriguez
Balloon cell melanoma (BCM) with metastasis is a rarely occurring neoplasia. The incidence of BCM is low, and hence, the frequency of these lesions presenting metastasis is even less frequent. This review exposes the balloon cell metastasis cases that have been published and a new case. These cases share the histopathological features but the location of initial melanoma, age and sex vary. It is relevant for the dermatologist and dermatopathologist to keep in mind the diagnosis of BCM and consider the possibility of it metastasizing as nonpigmented skin lesions...
December 10, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27941674/biology-therapy-and-implications-of-tumor-exosomes-in-the-progression-of-melanoma
#10
REVIEW
Allison L Isola, Kevinn Eddy, Suzie Chen
Cancer is the second leading cause of death in the United States, and about 6% of the estimated cancer diagnoses this year will be melanoma cases. Melanomas are derived from transformation of the pigment producing cells of the skin, melanocytes. Early stage melanoma is usually curable by surgical resection, but late stage or subsequent secondary metastatic tumors are treated with some success with chemotherapies, radiation and/or immunotherapies. Most cancer patients die from metastatic disease, which is especially the case in melanoma...
December 9, 2016: Cancers
https://www.readbyqxmd.com/read/27935036/sentinel-node-metastasis-mitotic-rate-sn-mmr-as-a-prognostic-indicator-of-rapidly-progressing-disease-in-patients-with-sentinel-node-positive-melanomas
#11
Cornelia Baum, Christel Weiss, Christoffer Gebhardt, Jochen Utikal, Alexander Marx, Wolfgang Koenen, Cyrill Géraud
Risk stratification of sentinel lymph node biopsy (SNB)-positive patients with malignant melanoma differs among current classification systems. To improve classification of patients with rapidly progressive disease who may profit from adjuvant therapy with novel immune or targeted treatment modalities, a single-center retrospective analysis was performed including all melanoma patients diagnosed with a positive SN at a university-based skin cancer center over a 10-year period (2002-2012) (96 of 419 patients)...
December 9, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27914118/blue-lymphangitis-of-the-breast-after-breast-cancer-case-report
#12
Alexandra Arfi, Alice Clavier, Jean F Honart, Samy Ammari, Zahira Merabet, Christine Mateus, Julia Arfi-Rouche
Carcinomatous lymphangitis accounts for 5% of all skin metastases, but blue lymphangitis of the breast has never been described. We report a case of blue lymphangitis of the breast in a patient 11 years after treatment for ipsilateral breast cancer that was in full remission. Breast examination and imaging showed no other abnormalities. Skin biopsy revealed a carcinomatous-pigmented infiltration corresponding to melanoma metastasis, which helped highlight a primitive right flank injury. This case report emphasizes that a full body exam should always be performed with unusual presentation of breast cancer and reiterates the indispensable place of histology before any diagnosis...
December 3, 2016: Breast Journal
https://www.readbyqxmd.com/read/27911450/uveal-melanoma-relatively-rare-but-deadly-cancer
#13
REVIEW
S Kaliki, C L Shields
Although it is a relatively rare disease, primarily found in the Caucasian population, uveal melanoma is the most common primary intraocular tumor in adults with a mean age-adjusted incidence of 5.1 cases per million per year. Tumors are located either in iris (4%), ciliary body (6%), or choroid (90%). The host susceptibility factors for uveal melanoma include fair skin, light eye color, inability to tan, ocular or oculodermal melanocytosis, cutaneous or iris or choroidal nevus, and BRCA1-associated protein 1 mutation...
December 2, 2016: Eye
https://www.readbyqxmd.com/read/27895497/microrna-9-suppresses-the-growth-migration-and-invasion-of-malignant-melanoma-cells-via-targeting-nrp1
#14
Dan Xu, Xiaofeng Chen, Quanyong He, Chengqun Luo
MicroRNAs (miRs) are a class of small noncoding RNAs that negatively regulate the gene expression by directly binding to the 3' untranslated region of their target mRNA, thus resulting in mRNA degradation or translational repression. miR-9 has recently been demonstrated to play a role in the development and progression of malignant melanoma (MM), but the regulatory mechanism of miR-9 in the malignant phenotypes of MM still remains largely unknown. In this study, a total of 73 pairs of MM tissues and adjacent normal tissues were collected...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27895081/malignant-melanoma-of-cervix
#15
Mayank Gupta
A 68-year-old woman presented with symptoms of bleeding per vaginum. On examination, a growth was seen in the cervix, clinically considered to be squamous cell carcinoma. The growth was confined to the cervix and did not involve the parametria. However, on biopsy it was diagnosed as malignant melanoma. She underwent surgery elsewhere and was advised chemotherapy as these tumours are aggressive; however, she refused chemotherapy. She has been on regular follow-up and has an ongoing survival and disease-free period of more than 5 years...
November 28, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27853253/generation-of-metastatic-melanoma-specific-antibodies-by-affinity-purification
#16
Birgit Schütz, Anita Koppensteiner, David Schörghofer, Katharina Kinslechner, Gerald Timelthaler, Robert Eferl, Markus Hengstschläger, Albert Missbichler, Harald Hundsberger, Mario Mikula
Melanoma is the most aggressive type of skin cancer and one of the most frequent tumours in young adults. Identification of primary tumours prone to develop metastasis is of paramount importance for further patient stratification. However, till today, no markers exist that are routinely used to predict melanoma progression. To ameliorate this problem, we generated antiserum directed against metastatic melanoma tissue lysate and applied a novel approach to purify the obtained serum via consecutive affinity chromatography steps...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27837031/pharmacological-inhibition-of-myocardin-related-transcription-factor-pathway-blocks-lung-metastases-of-rhoc-overexpressing-melanoma
#17
Andrew J Haak, Kathryn M Appleton, Erika M Lisabeth, Sean A Misek, Yajing Ji, Susan M Wade, Jessica L Bell, Cheryl E Rockwell, Merlin Airik, Melanie A Krook, Scott D Larsen, Monique Verhaegen, Elizabeth R Lawlor, Richard R Neubig
Melanoma is the most dangerous form of skin cancer with the majority of deaths arising from metastatic disease. Evidence implicates Rho-activated gene transcription in melanoma metastasis mediated by the nuclear localization of the transcriptional coactivator, myocardin-related transcription factor (MRTF). Here, we highlight a role for Rho and MRTF signaling and its reversal by pharmacologic inhibition using in vitro and in vivo models of human melanoma growth and metastasis. Using two cellular models of melanoma, we clearly show that one cell type, SK-Mel-147, is highly metastatic, has high RhoC expression, and MRTF nuclear localization and activity...
January 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/27825810/dss1-promoter-hypomethylation-and-overexpression-predict-poor-prognosis-in-melanoma-and-squamous-cell-carcinoma-patients
#18
Mario Venza, Maria Visalli, Teresa Catalano, Concetta Beninati, Diana Teti, Isabella Venza
Previous studies have found a link between high expression levels of the Deleted in Split hand/Split foot 1 (DSS1) gene and cancer progression. The aim of this study was to examine whether overexpression of DSS1 is a feature of melanoma and squamous cell carcinoma (SCC) and if any epigenetic modifications are involved. Evaluation of DSS1 expression profile indicated that the gene is overexpressed in 112/130 cutaneous melanomas (86.1%), 41/64 uveal melanomas (64.1%), 67/82 mucosal melanomas (81.7%), and 61/75 SCC samples (81...
November 4, 2016: Human Pathology
https://www.readbyqxmd.com/read/27813258/congenital-cutaneous-melanoma-in-a-dog
#19
Bruna Meyrer, Simone Passos Bianchi, Saulo Petinatti Pavarini, Daniel Guimarães Gerardi
BACKGROUND: Melanocytic tumours are derived from melanocytes and are common in older dogs with dark pigmented skin. Primary congenital cutaneous melanoma has been described in domestic mammals although there are no reports in the dog. HYPOTHESIS/OBJECTIVE: We describe a case of canine congenital cutaneous melanoma with rapid progression to metastasis and death. ANIMAL: A male, mixed breed dog was born with a circular ulcerated lesion near the left ear...
November 4, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27775691/targeting-melanoma-with-front-line-therapy-does-not-abrogate-nodal-expressing-tumor-cells
#20
Mary Jc Hendrix, Irawati Kandela, Andrew P Mazar, Elisabeth A Seftor, Richard Eb Seftor, Naira V Margaryan, Luigi Strizzi, George F Murphy, Georgina V Long, Richard A Scolyer
Metastatic melanoma is a highly aggressive skin cancer with a poor prognosis. It is the leading cause of skin cancer deaths with a median overall survival for advanced-stage metastatic disease of <6 months. Despite advances in the field with conventional and targeted therapies, the heterogeneity of melanoma poses the greatest ongoing challenge, ultimately leading to relapse and progression to a more drug-resistant tumor in most patients. Particularly noteworthy are recent findings, indicating that these therapies exert selective pressure on tumors resulting in the activation of pathways associated with cancer stem cells that are unresponsive to current therapy...
October 24, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
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