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Dobrev HP, Abadjieva TI, Aleksiev TI, Ivanova ZG, Vutova NI. Malignant melanoma in a patient with hidrotic ectodermal dysplasia. Wien Med Wochenschr 2023; 173:260-262. [PMID: 35723819 DOI: 10.1007/s10354-022-00940-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 05/16/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Hristo Petrov Dobrev
- Department of Dermatology and Venereology, Medical Faculty, Medical University, 15A V. Aprilov Blvd., 4002, Plovdiv, Bulgaria.
| | - Tsvetana Ivanova Abadjieva
- Department of Dermatology and Venereology, Medical Faculty, Medical University, 15A V. Aprilov Blvd., 4002, Plovdiv, Bulgaria
| | - Teodor Ivanov Aleksiev
- Department of Dermatology and Venereology, Medical Faculty, Medical University, 15A V. Aprilov Blvd., 4002, Plovdiv, Bulgaria
| | - Zlatina Georgieva Ivanova
- Department of Dermatology and Venereology, Medical Faculty, Medical University, 15A V. Aprilov Blvd., 4002, Plovdiv, Bulgaria
| | - Nina Ivanova Vutova
- Department of Dermatology and Venereology, Medical Faculty, Medical University, 15A V. Aprilov Blvd., 4002, Plovdiv, Bulgaria
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Pospischil I, Enzelsberger K, Gross S, Hoetzenecker W, Fischer TW. Mal de Meleda: Diagnostic Work-up and Therapy with Low-dose Acitretin. Acta Derm Venereol 2022; 102:adv00758. [DOI: 10.2340/actadv.v102.995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract is missing (Short communication)
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Cebeci D, Karasel S, Bayraktaroglu G. Two sisters with mal de meleda: Case series report. Int J Appl Basic Med Res 2022; 12:151-154. [PMID: 35754677 PMCID: PMC9215182 DOI: 10.4103/ijabmr.ijabmr_812_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 11/05/2022] Open
Abstract
Mal de Meleda (MDM) is a rare autosomal recessive type of palmoplantar keratoderma that is characterized by transgradient keratoderma with scleroatrophy, pseudoainhum around the fingers, and perioral erythema. Its features may also include lichenoid lesions, brachydactyly, and nail dystrophy. The disease has high morbidity and significantly impairs quality of life. Here, we describe two sisters with typical clinical presentations of MDM and a history of consanguinity between the parents.
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Hui RY, Wang HN, Wang FY. Mal de Meleda mimicking psoriasis: A case report and literature review. DERMATOL SIN 2021. [DOI: 10.4103/ds.ds_31_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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[Acral melanoma in a patient with hereditary keratoderma of the palms and soles (mal de Meleda): A chance association?]. Ann Dermatol Venereol 2019; 146:730-736. [PMID: 31582262 DOI: 10.1016/j.annder.2019.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 02/01/2019] [Accepted: 08/05/2019] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Development of acral malignant melanoma in Mal de Meleda is highly unusual. As far as we could ascertain, to date, only 10 previous cases have been published. Herein, we report a new case. OBSERVATION A 64-year-old Algerian man was followed for familial Mal de Meleda. The diagnosis was based on clinical presentation as he had a non-syndromic hereditary foul-smelling and yellowish palmoplantar keratoderma transgrediens. After the failure of acitretin, which had not prevented retractile and mutilating progression of the palmoplantar keratoderma, he had undergone surgery with graft excision of both palms. At the age of 59 years, he presented a tumor on the dorsal aspect of the 1st phalanx of the 3rd finger of the right hand in a non-grafted area. The diagnosis of acral melanoma was confirmed histologically. The radiological findings showed a specific homolateral axillary adenopathy. He underwent digital amputation of the 3rd finger, with lymph node dissection and chemotherapy involving dacarbazine. Follow-up at 5 years showed complete remission of the melanoma. DISCUSSION Mal de Meleda is a hereditary palmoplantar keratoderma due to mutation of the SLURP1 gene. Clinical diagnosis is based on the typical phenotype in adulthood. The occurrence of acral melanoma, which is a rare form of melanoma (1 to 7%), especially in the fingers, together with an unusual palmoplantar keratoderma in a subject of type IV phototype does not appear to be a chance event. This association seems to be the outcome of immune dysregulation rather than of chronic inflammation.
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Arousse A, Mokni S, H'mida Ben Brahim D, Bdioui A, Aounallah A, Gammoudi R, Saidi W, Boussofara L, Ghariani N, Denguezli M, Belajouza C, Nouira R. Amelanotic melanoma arising in an area of
SLURP
‐1 mutated Mal de Meleda. Int J Dermatol 2018; 58:966-968. [DOI: 10.1111/ijd.14231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/13/2018] [Accepted: 08/22/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Aycha Arousse
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Sana Mokni
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Dorra H'mida Ben Brahim
- Department of Cytogenetics, Molecular Genetics and Reproductive Biology Farhat Hached University Hospital Sousse Tunisia
| | - Ahlem Bdioui
- Pathology Department Farhat Hached University Hospital Sousse Tunisia
| | - Amina Aounallah
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Rima Gammoudi
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Wafa Saidi
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Lobna Boussofara
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Najet Ghariani
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | - Mohamed Denguezli
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
| | | | - Rafia Nouira
- Dermatology Department Farhat Hached University Hospital Sousse Tunisia
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Throm VM, Männle D, Giese T, Bauer AS, Gaida MM, Kopitz J, Bruckner T, Plaschke K, Grekova SP, Felix K, Hackert T, Giese NA, Strobel O. Endogenous CHRNA7-ligand SLURP1 as a potential tumor suppressor and anti-nicotinic factor in pancreatic cancer. Oncotarget 2018; 9:11734-11751. [PMID: 29545933 PMCID: PMC5837762 DOI: 10.18632/oncotarget.24312] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 12/05/2017] [Indexed: 01/18/2023] Open
Abstract
Smoking is associated with increased risk and poorer prognosis of pancreatic ductal adenocarcinoma (PDAC). Nicotine acts through cholinergic nicotinic receptors, preferentially α7 (CHRNA7) that also binds the endogenous ligand SLURP1 (Secreted Ly-6/uPAR-Related Protein 1). The clinical significance of SLURP1 and its interaction with nicotine in PDAC are unclear. We detected similar levels of SLURP1 in sera from healthy donors and patients with chronic pancreatitis or PDAC; higher preoperative values were associated with significantly better survival in patients with resected tumors. Pancreatic tissue was not a source of circulating SLURP1 but contained diverse CHRNA7-expressing cells, preferentially epithelial and immune, whereas stromal stellate cells and a quarter of the tumor cells lacked CHRNA7. The CHRNA7 mRNA levels were decreased in PDAC, and CHRNA7high-PDAC patients lived longer. In CHRNA7high COLO357 and PANC-1 cultures, opposing activities of SLURP1 (anti-malignant/CHRNA7-dependent) and nicotine (pro-malignant/CHRNA7-infidel) were exerted without reciprocally interfering with receptor binding or downstream signaling. These data suggested that the ligands act independently and abolish each other’s effects through a mechanism resembling functional antagonism. Thus, SLURP1 might represent an inborn anti-PDAC defense being sensitive to and counteracting nicotine. Boosting SLURP1-CHRNA7 interaction might represent a novel strategy for treatment in high-risk individuals, i.e., smokers with pancreatic cancer.
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Affiliation(s)
- Verena M Throm
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - David Männle
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Giese
- Institute of Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Andrea S Bauer
- Department of Functional Genomics, DKFZ, Heidelberg, Germany
| | - Matthias M Gaida
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Juergen Kopitz
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Bruckner
- Institute of Medical Biometry and Informatics/IMBI, University Hospital Heidelberg, Heidelberg, Germany
| | - Konstanze Plaschke
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Svetlana P Grekova
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Klaus Felix
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Thilo Hackert
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Nathalia A Giese
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Oliver Strobel
- European Pancreas Centre/EPZ, Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
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Bergqvist C, Kadara H, Hamie L, Nemer G, Safi R, Karouni M, Marrouche N, Abbas O, Hasbani DJ, Kibbi AG, Nassar D, Shimomura Y, Kurban M. SLURP-1is mutated in Mal de Meleda, a potential molecular signature for melanoma and a putative squamous lineage tumor suppressor gene. Int J Dermatol 2017; 57:162-170. [DOI: 10.1111/ijd.13850] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/02/2017] [Indexed: 02/01/2023]
Affiliation(s)
| | - Humam Kadara
- Department of Biochemistry and Molecular Genetics; American University of Beirut; Beirut Lebanon
| | - Lamiaa Hamie
- Department of Internal Medicine; American University of Beirut; Beirut Lebanon
| | - Georges Nemer
- Department of Biochemistry and Molecular Genetics; American University of Beirut; Beirut Lebanon
| | - Remi Safi
- Department of Dermatology; American University of Beirut; Beirut Lebanon
| | - Mirna Karouni
- Department of Dermatology; American University of Beirut; Beirut Lebanon
| | - Nadine Marrouche
- Department of Dermatology; Norfolk and Norwich University; Norwich UK
| | - Ossama Abbas
- Department of Dermatology; American University of Beirut; Beirut Lebanon
| | | | - Abdul G. Kibbi
- Department of Dermatology; American University of Beirut; Beirut Lebanon
| | - Dany Nassar
- Department of Dermatology; American University of Beirut; Beirut Lebanon
| | - Yutaka Shimomura
- Division of Dermatology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - Mazen Kurban
- Department of Dermatology; American University of Beirut; Beirut Lebanon
- Department of Biochemistry and Molecular Genetics; American University of Beirut; Beirut Lebanon
- Department of Dermatology; Columbia University; New York NY USA
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9
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Pan Y, Zhao H, Chen A, Huang X. A Mal De Meleda patient with severe flexion contractures of hands and feet: A case report in West China. Medicine (Baltimore) 2017; 96:e7972. [PMID: 28885351 PMCID: PMC6392506 DOI: 10.1097/md.0000000000007972] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Palmoplantar keratoderma (PPK) is a genetically heterogeneous group of skin diseases, which is characterized by erythema and hyperkeratosis. Mal de Meleda (MDM) is a rare type of PPK with an estimated prevalence in the general population of 1 in 100,000. PATIENT CONCERNS In this study, we report a MDM patient with severe lesion in skin and flexion contractures of fingers and toes. DIAGNOSES MDM was diagnosed based on clinical manifestations and gene test. INTERVENTIONS This patient was treated with oral acitretin and topical tazarotene. OUTCOMES Physical examinations indicated that the hyperkeratosis was in remission, but the erythema was expanding to her elbows progressively. Due to the adverse events (e.g., dry eyes and lips), the patient stopped taking the oral drug. LESSONS MDM is a rare subtype of PPK, which is inherited in an autosomal recessive pattern and has characteristics that skin lesions on hands and feet appear soon after birth and develop progressively. MDM can lead to severe flexion contractures in some cases. The reliable method for the diagnosis of MDM is gene test.
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Affiliation(s)
- Yun Pan
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University
| | - Hengguang Zhao
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University
| | - Aijun Chen
- Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University
| | - Xin Huang
- Department of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
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Abstract
Mal de Meleda is a rare autosomal recessive palmoplantar keratoderma (PPK) disease with an estimated prevalence of 1:100,000. Clinically, the onset of the disease is typically soon after birth and features a transgrediens (plantar surface progressing to dorsal surface) and progrediens (worsening with age) pattern of hyperkeratosis of the palms and soles. The disease can feature other potentially disfiguring effects on the hands and feet that can severely impact function. Histologically, the lesions show hyperkeratosis and acanthosis without epidermolysis in the epidermis, accompanied by perivascular lymphocytic infiltrate in the dermis. Secreted LY6/urokinase-type plasminogen activator receptor (uPAR)-related protein-1 (SLURP-1) genetic mutations are implicated in Mal de Meleda. SLURP-1 is involved in mediation of inflammation as well as keratinocyte apoptosis regulation. Because the disease is so rare, there are no set guidelines for management, but the accepted approach tends to include oral acitretin plus topical keratolytic therapy. Genetic counseling should also be offered. This focused review highlights the clinical and histological features, differential diagnoses, genetic background, and the current thoughts on management of Mal de Meleda.
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Affiliation(s)
| | - Amor Khachemoune
- State University of New York Downstate Medical Center, Brooklyn, NY, USA.
- Dermatology Service, Veterans Affairs Medical Center, 800 Poly Place, Brooklyn, NY, 11209, USA.
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Vilas-Sueiro A, Rosón E, Suárez-Peñaranda JM, Vázquez-Osorio I, Sánchez-Aguilar D, Vázquez-Veiga H. Malignant melanoma in a patient with mal de Meleda. Clin Exp Dermatol 2016; 41:437-9. [PMID: 26801819 DOI: 10.1111/ced.12791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Indexed: 11/29/2022]
Affiliation(s)
- A Vilas-Sueiro
- Department of Dermatology, Complejo Hospitalario Universitario Ferrol, A Coruña, 15405, Spain.
| | - E Rosón
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - J-M Suárez-Peñaranda
- Department of Pathology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - I Vázquez-Osorio
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - D Sánchez-Aguilar
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - H Vázquez-Veiga
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
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12
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Particular Mal de Meleda phenotypes in Tunisia and mutations founder effect in the Mediterranean region. BIOMED RESEARCH INTERNATIONAL 2013; 2013:206803. [PMID: 24093092 PMCID: PMC3777190 DOI: 10.1155/2013/206803] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 08/05/2013] [Indexed: 11/17/2022]
Abstract
Mal de Meleda (MDM) is a rare, autosomal recessive form of palmoplantar keratoderma. It is characterized by erythema and hyperkeratosis of the palms and soles that progressively extend to the dorsal surface of the hands and feet. It is caused by mutations in SLURP-1 gene encoding for secreted mammalian Ly-6/uPAR-related protein 1 (SLURP-1). We performed mutational analysis by direct sequencing of SLURP-1 gene in order to identify the genetic defect in three unrelated families (families MDM-12, MDM-13, and MDM-14) variably affected with transgressive palmoplantar keratoderma. A spectrum of clinical presentations with variable features has been observed from the pronounced to the transparent hyperkeratosis. We identified the 82delT frame shift mutation in the SLURP-1 gene in both families MDM-12 and MDM-13 and the missense variation p.Cys99Tyr in family MDM-14. To date, the 82delT variation is the most frequent cause of MDM in the world which is in favour of a recurrent molecular defect. The p.Cys99Tyr variation is only described in Tunisian families making evidence of founder effect mutation of likely Tunisian origin. Our patients presented with very severe to relatively mild phenotypes, including multiple keratolytic pits observed for one patient in the hyperkeratotic area which was not previously reported. The phenotypic variability may reflect the influence of additional factors on disease characteristics.
This report further expands the spectrum of clinical phenotypes associated with mutations in SLURP1 in the Mediterranean population.
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Tjiu JW, Lin PJ, Wu WH, Cheng YP, Chiu HC, Thong HY, Chiang BL, Yang WS, Jee SH. SLURP1 mutation-impaired T-cell activation in a family with mal de Meleda. Br J Dermatol 2010; 164:47-53. [DOI: 10.1111/j.1365-2133.2010.10059.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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14
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Sartore L, Bordignon M, Bassetto F, Voltan A, Tomat V, Alaibac M. Melanoma in skin affected with keratoderma palmoplantaris hereditaria (Mal de Meleda): Treatment with excision and grafting. J Am Acad Dermatol 2009; 61:161-3. [PMID: 19539863 DOI: 10.1016/j.jaad.2009.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 01/02/2009] [Accepted: 01/02/2009] [Indexed: 10/20/2022]
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Al-Ghoul M, Brück TB, Lauer-Fields JL, Asirvatham VS, Zapata C, Kerr RG, Fields GB. Comparative proteomic analysis of matched primary and metastatic melanoma cell lines. J Proteome Res 2008; 7:4107-18. [PMID: 18698805 DOI: 10.1021/pr800174k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Identification of the biochemical pathways involved in the transformation from primary to metastatic melanoma is an area under intense investigation. A 2DE proteomics approach has been applied herein to the matched patient primary and metastatic melanoma cell lines WM-115 and WM-266-4, respectively, to better understand the processes that underlie tumor progression. Image analysis between samples aligned 470 common gel spots. Quantitative gel analysis indicated 115 gel spots of greater intensity in the metastatic line compared with the primary one, leading to the identification of 131 proteins via database searching of nano-LC-ESI-Q-TOF-MS/MS data. This more than tripled the number of proteins previously shown to be of higher abundance during melanoma progression. Also observed were 22 gel spots to be of lesser intensity in the metastatic line with respect to the primary one. Of these gel spots 15 proteins could be identified. Numerous proteins from both groups had not been reported previously to participate in melanoma progression. Further analysis of one protein, cyclophilin A, confirmed that this protein is expressed at higher levels in metastatic melanoma compared with primary melanoma and normal fibroblasts. Overall, this study expands our knowledge of protein modulation during melanoma stages, and suggests new targets for inhibitor development.
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Affiliation(s)
- Mohammad Al-Ghoul
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, USA
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Grando SA. Basic and clinical aspects of non-neuronal acetylcholine: biological and clinical significance of non-canonical ligands of epithelial nicotinic acetylcholine receptors. J Pharmacol Sci 2008; 106:174-9. [PMID: 18285656 DOI: 10.1254/jphs.fm0070087] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Mucocutaneous keratinocytes and bronchial epithelial cells express nicotinic acetylcholine receptors (nAChRs). Emerging evidence indicates that nAChRs can be stimulated also by the tobacco-derived nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N'-nitrosonornicotine (NNN) that can induce tumors in laboratory animals. Nitrosamines may disturb the delicate balance between cell proliferation, growth arrest, and apoptosis. A novel paradigm of cell regulation via nAChR has been discovered in studies of SLURP (secreted mammalian Ly-6/urokinase plasminogen activator receptor-related protein)-1 and -2. Experimental results suggest that SLURP-1 and -2 regulate keratinocyte proliferation, apoptosis, and differentiation. Most importantly, SLURPs and professional nicotinic antagonists can abolish, in part, the abilities of NNK and NNN to cause tumorigenic transformation of immortalized keratinocytes. Learning the pharmacology of the nitrosamine vs. SLURP action on epithelial cells may help develop an effective anti-cancer treatment and prevention programs wherein hazardous effects of tobacco products are anticipated, or even abolished, by a pharmacologic ligand of the specific nicotinic receptor acting as an antidote.
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Affiliation(s)
- Sergei A Grando
- Department of Dermatology, University of California Irvine 92697, USA.
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Arredondo J, Chernyavsky AI, Grando SA. Overexpression of SLURP-1 and -2 alleviates the tumorigenic action of tobacco-derived nitrosamine on immortalized oral epithelial cells. Biochem Pharmacol 2007; 74:1315-9. [PMID: 17643396 PMCID: PMC2046218 DOI: 10.1016/j.bcp.2007.06.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2007] [Revised: 06/09/2007] [Accepted: 06/12/2007] [Indexed: 10/23/2022]
Abstract
Recent research has demonstrated that mucocutaneous epithelial cells express functional nicotinic acetylcholine receptors (nAChRs) and that tobacco-derived carcinogenic nitrosamines, such as 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), and SLURP (secreted mammalian Ly-6/urokinase plasminogen activator receptor-related protein)-1 and -2 can act as non-canonical ligands of these receptors. It was found that recombinant SLURP-1 and -2 can lessen tumorigenic activity of nitrosamines. The immortalized esophageal keratinocytes (Het-1A cells) exhibit low SLURP-1 and -2 mRNA levels that decrease further after treatment with NNK. Based on these observations, we hypothesized that overexpression of full length SLURP proteins may protect Het-1A cells from malignant transformation by NNK. The Het-1A cells transfected with either SLURP-1 or -2 vector produced the highest amounts of respective proteins between 24 and 48 h, at which point they were exposed to 1 microM NNK for 24 h and their tumorigenic activities were subsequently evaluated by plating in soft agar and injecting subcutaneously to Nu/Nu mice. Transfection with either SLURP-1 or -2 cDNA in both cases significantly (p<0.05) diminished the number of colonies produced by NNK exposed cells. SLURP-1 was more efficient than SLURP-2 in abolishing the tumorigenic effect in nude mice. Thus, the anti-tumorigenic activities of SLURP-1 and -2 were demonstrated both in vitro and in vivo. The obtained results suggest that SLURP-like proteins may become useful for developing novel anti-cancer therapies.
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Affiliation(s)
- Juan Arredondo
- Department of Dermatology, University of California at Irvine, Irvine, CA 92697, USA
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