Abstract:Using a variety of techniques, estrogen and progesterone receptors have previously been identified in variable percentages of malignant melanomas. We examined 10 primary superficial spreading melanomas (SSM) with a fluorescent hormone-binding technique for estrogen and progesterone cytoplasmic receptors. Of these 6 SSM were markedly positive for estrogen and progesterone binding. Patients with dysplastic nevus syndrome (DNS) or a family history of DNS were markedly positive for estrogen and progesterone bindin… Show more
“…Estrogen receptors have been found on melanoma cells (Grill et al, 1982; Ellis et al, 1985a,b; Ellis and Wheeland, 1986; Thompson et al, 1981). The fact that female hormones may have a protective effect in patients with MM (Briele et al, 1983) possibly is a factor in why females have thinner lesions.…”
Section: Section VIImentioning
confidence: 99%
“…Selected Literature : The fact that MM rarely occurs before puberty and that estrogen receptors have been found on MM cells (McCarty et al, 1980; Ellis and Wheeland, 1986; Ellis et al, 1985a,b) suggests that the level of estrogens (which are related to the menstrual status of the patient) may play a role in the risk for or growth rate of MM.…”
Section: Section VIImentioning
confidence: 99%
“… Brocker et al, 1984, 1985; Bumol and Reisfeld, 1982; Ellis et al, 1985b; Ellis and Wheeland, 1986; Halpern et al, 1985; Hearing, 1981; Herlyn et al, 1983; Hersey, 1985; Imai et al, 1981; Imam et al, 1986; Kantor et al, 1982; Knudsen et al, 1982; Kozlowski et al, 1984; Natali et al, 1983a,b, 1985; Nicolson, 1982; Real et al, 1985; Ruiter et al, 1985; Sherwin et al, 1979; Stefansson et al, 1982; Thompson et al, 1981; Tomita et al, 1985; Wakabayashi et al, 1984; Watanabe et al, 1982. …”
“…Estrogen receptors have been found on melanoma cells (Grill et al, 1982; Ellis et al, 1985a,b; Ellis and Wheeland, 1986; Thompson et al, 1981). The fact that female hormones may have a protective effect in patients with MM (Briele et al, 1983) possibly is a factor in why females have thinner lesions.…”
Section: Section VIImentioning
confidence: 99%
“…Selected Literature : The fact that MM rarely occurs before puberty and that estrogen receptors have been found on MM cells (McCarty et al, 1980; Ellis and Wheeland, 1986; Ellis et al, 1985a,b) suggests that the level of estrogens (which are related to the menstrual status of the patient) may play a role in the risk for or growth rate of MM.…”
Section: Section VIImentioning
confidence: 99%
“… Brocker et al, 1984, 1985; Bumol and Reisfeld, 1982; Ellis et al, 1985b; Ellis and Wheeland, 1986; Halpern et al, 1985; Hearing, 1981; Herlyn et al, 1983; Hersey, 1985; Imai et al, 1981; Imam et al, 1986; Kantor et al, 1982; Knudsen et al, 1982; Kozlowski et al, 1984; Natali et al, 1983a,b, 1985; Nicolson, 1982; Real et al, 1985; Ruiter et al, 1985; Sherwin et al, 1979; Stefansson et al, 1982; Thompson et al, 1981; Tomita et al, 1985; Wakabayashi et al, 1984; Watanabe et al, 1982. …”
“…Prior to the first cloning of an oestrogen receptor in 1986 (1), the presence of an oestrogen receptor or binding protein in melanocytic lesions was indirectly demonstrated by using ligand-binding methods (2)(3)(4)(5)(6)(7)(8). Subsequently, monoclonal antibodies were developed against what is now recognized as oestrogen receptor alpha (ERa).…”
Melanomas rarely occur before puberty, have a higher death rate for males, and tend to be more invasive during pregnancy. Prior to the discovery of a second oestrogen receptor (ERbeta), studies with the initial oestrogen receptor, ERalpha, showed no obvious role for oestrogen in the pathophysiology of benign or malignant melanocytic lesions. To investigate the specific immunostaining patterns of ERalpha and ERbeta, benign nevocytic nevi, dysplastic nevi with mild, moderate and severe cytological atypia, lentigo malignas and melanomas of varying depth (Clark) and thickness (Breslow) were studied. ERbeta but not ERalpha was the predominant oestrogen receptor we found in all types of benign and malignant melanocytic lesions. The most intense ERbeta immunostaining was seen in melanocytes in dysplastic nevi with severe cytological atypia and in lentigo malignas. ERbeta expression levels also correlated with the malignant tumor microenvironment; i.e., melanocytes in proximity with keratinocytes>deeper dermal melanocytes in contact with stroma>minimally invasive melanomas>Clark Level III/IV or thick melanomas (Breslow). Discovery that ERbeta expression varies in relation to the tumor microenvironment and increasing depth of invasion suggests its possible usefulness as a surrogate marker for neoplasia and prognosis in malignant melanoma.
“…Receptors to various hormones and factors exist on malignant melanoma cells: to estrogen, progesterone (Fernoe et al, 1984;Ellis et al, 1985), dexamethasone (Hawkins et al, 1982), nerve growth factor (Grob et al, 1985), epidermal growth factor and 1,25 dihydroxyvitamin D3 (Colston et al, 1981). Melanocyte-stimulating hormone receptors have been described in mouse melanoma and their presence has been suggested in human melanoma.…”
The presence of alpha-MSH receptors on human melanoma has so far been suggested in the literature but not proved. We describe a reproducible and specific binding assay of alpha-MSH on human melanoma cells, using a high-specific-activity 125I-labelled hormone (1.5 to 2 mCi/micrograms) with consistent receptor binding (usually exceeding 2 pg/10(6) cells) and stable for 3 weeks. Asynchronized cells in suspension were incubated for 15 min at 37 degrees C with the tracer and various concentrations of unlabelled hormones. Synthetic alpha-MSH was compared to beta-MSH, ACTH1-24, ACTH4-10, beta-LPH, CLIP, CRF, MIF I, A8VP and beta-endorphin. Out of a panel of 8 human melanoma cell lines, 3 showed specific and reproducible alpha-MSH binding curves. No significant binding to human fibroblast and human carcinoma cells was seen. alpha-MSH, beta-MSH and, to a lesser extent ACTH4-10 (a part of the alpha-MSH sequence) were the only peptides able to displace labelled alpha-MSH from its binding sites, indicating the high specificity of the MSH receptor. Affinity constants (Ka) ranged from 10(8) to 10(9) l/mole and the estimated receptor number was 1,000 to 2,000 per cell. We conclude that some human melanoma cell lines expressed specific MSH receptors with stable affinity but which are low in number.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.