Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0027819 (neuroblastoma)
 27,800 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Mouse myeloma cells were fused with spleen cells from BALB/c mice immunized with a cell line derived from human small cell carcinoma (SCC) of the lung. The cloned hybridoma SM1 produced antibody that was reactive with the surface membrane of SCC cell lines and SCC tumors but not with the membrane of several non-SCC cell lines and tumors. SM1 ascites fluid was used to screen for reactivity of the antibody with other human cancer cell lines, tumor tissues, and normal tissues. SM1 antibody was found to be unreactive with neuroblastoma, adrenal carcinoma, melanoma, and bronchial carcinoid. Reactivity was detected with some breast carcinoma cell lines but not with breast cancer tissue specimens. In the same individual, the antibody was reactive with SCC lung tumor and SCC metastatic to the liver but not with normal tissues, including bronchus, lung parenchyma, liver, kidney, and brain. Human erythrocytes and marrow cells were also unreactive. Since SM1 detects an antigen that is present in greatest amounts on the surface membrane of SCC of the lung, this antibody may be useful in tracing the lineage patterns of human lung cancers.
 ...
PMID:Membrane antigen in small cell carcinoma of the lung defined by monoclonal antibody SM1. 631 70

Human neuroblastoma (NB) cell lines have at least three morphological appearance of neuroblastic (N-type), substrate-adhessive (S-type) and intermediate(I) cells. Our previous study revealed S-type cells expressed alpha-smooth muscle actin, desmin and/or basic-calponin, indicating the plausible smooth muscle cell characteristics of S-type cells. In this study, a new human NB cell line, MP-N-MS, was established from bone marrow metastasis of a one year and six-month old girl with advanced NB, originating from right adrenal gland. Morphology of this cell line is composed of S-type cells. MP-N-MS was identified as a NB cell line by surface membrane antigen analysis and MYCN gene amplification. EWS-FLI1 and EWS-ERG chimeric products, observed in Ewing family tumors, were not detected by RT-PCR (reverse transcriptase-polymerase chain reaction). In cytoskeletal protein analysis, alpha-smooth muscle actin and basic calponin of smooth muscle cell markers were detected. Furthermore, smooth myosin of SM1 isoform was identified in MP-N-MS cell line by immunofluorescence, Western blot and RT-PCR, whereas smooth myosin of SM2 was detected by RT-PCR. MP-N-MS is the first cell line, showing SM1 and SM2 isoforms. The presence of smooth muscle myosin of SM1 and SM2 isoforms in MP-N-MS demonstrated the mature smooth muscle phenotype of this NB cell line, and the ability of NB cells to differentiate into smooth muscle cell.
 ...
PMID:[Smooth muscle myosin of SM1 and SM2 isoforms expressing human neuroblastoma cell line of MP-N-MS]. 1045 5

Neuroblastoma is a tumor that is derived from the neural crest. Recent studies demonstrated that several human neuroblastoma cell lines exhibit at least three morphologic types: neuroblastic (N)-type, substrate-adhesive (S)-type and intermediate (I)-type cells. However, the origin of the S-type cells has not been clearly identified. In this study, the expressions of smooth muscle-specific proteins (desmin, alpha-smooth muscle actin, basic calponin and the smooth muscle myosin heavy-chain isoforms of SM1 and SM2) in three parent and four cloned neuroblastoma cell lines, composed of S-type cells, were examined by indirect immunofluorescence, Western blot and/or by reverse transcription-polymerase chain reaction (RT-PCR). Desmin was found in two of the seven cell lines, and alpha-smooth muscle actin and basic calponin were detected in all of seven of the cell lines. In three parent cell lines and one cloned cell line composed of N-type cells, none of three smooth muscle-specific proteins were detected. In smooth muscle myosin heavy-chain isoforms, SM1 was detected in two parent cell lines composed of S-type cells (MP-N-MS and KP-N-YS) by immunofluorescence, Western blot and/or by RT-PCR, whereas the SM2 isoform was detected in one parent cell line (MP-N-MS) by RT-PCR. These findings indicate that S-type cells have either the immature or mature smooth muscle cell phenotype, and neural crest cells very likely have the ability of to differentiate into smooth muscle cells in the human system.
 ...
PMID:Neuroblastoma cell lines showing smooth muscle cell phenotypes. 1112 46