Expression of thyroid hormone receptor isoforms down-regulated by thyroid hormone in human medulloblastoma cells. 2006

Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
Department of Endocrinology and Metabolism, Dokkyo University School of Medicine, Tochigi, Japan.

The role of thyroid hormone (T3) in the regulation of growth and development of the central nervous system including the cerebellum has been well established. However, the effects of thyroid hormone on malignant tumors derived from the cerebellum remain poorly understood. Our analysis mainly focused on expression levels of TR isoforms and the effects of thyroid hormone in human medulloblastoma HTB-185 cells. Northern blot analysis revealed TRalpha2 mRNA but not TRalpha1, beta1 or beta2 mRNA in the cell. The TRalpha1 and TRbeta1 mRNAs were detected only by RT-PCR method and TRbeta2 was not expressed. Incubation of T3 for 24 h decreased TRalpha1, TRalpha2 and TRbeta1 mRNA. Addition of actinomycin D caused an acute increase in the basal TR mRNA levels and the rate of decrease of all kinds of TR isoform mRNA was accelerated in the T3-treated groups compared to controls, indicating that the stability of TR mRNA was affected by T3. Incubation with cycloheximide also blocked a decrease in TR mRNA levels in the T3-treated HTB-185 cells suggesting that down-regulation of TR mRNA required the synthesis of new protein. Our data provide novel evidence for the expression of TRs down-regulated by T3 in HTB-185 cells, suggesting that TR expression is post-transcriptionally regulated by T3 at the level of RNA stability.

UI MeSH Term Description Entries
D008527 Medulloblastoma A malignant neoplasm that may be classified either as a glioma or as a primitive neuroectodermal tumor of childhood (see NEUROECTODERMAL TUMOR, PRIMITIVE). The tumor occurs most frequently in the first decade of life with the most typical location being the cerebellar vermis. Histologic features include a high degree of cellularity, frequent mitotic figures, and a tendency for the cells to organize into sheets or form rosettes. Medulloblastoma have a high propensity to spread throughout the craniospinal intradural axis. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2060-1) Arachnoidal Cerebellar Sarcoma, Circumscribed,Medulloblastoma, Desmoplastic,Medullomyoblastoma,Sarcoma, Cerebellar, Circumscribed Arachnoidal,Medulloblastoma, Adult,Medulloblastoma, Childhood,Melanocytic Medulloblastoma,Adult Medulloblastoma,Adult Medulloblastomas,Childhood Medulloblastoma,Childhood Medulloblastomas,Desmoplastic Medulloblastoma,Desmoplastic Medulloblastomas,Medulloblastoma, Melanocytic,Medulloblastomas,Medulloblastomas, Adult,Medulloblastomas, Childhood,Medulloblastomas, Desmoplastic,Medulloblastomas, Melanocytic,Medullomyoblastomas,Melanocytic Medulloblastomas
D011988 Receptors, Thyroid Hormone Specific high affinity binding proteins for THYROID HORMONES in target cells. They are usually found in the nucleus and regulate DNA transcription. These receptors are activated by hormones that leads to transcription, cell differentiation, and growth suppression. Thyroid hormone receptors are encoded by two genes (GENES, ERBA): erbA-alpha and erbA-beta for alpha and beta thyroid hormone receptors, respectively. Diiodotyrosine Receptors,Receptors, Diiodotyrosine,Receptors, Thyroxine,Receptors, Triiodothyronine,T3 Receptors,T4 Receptors,Thyroid Hormone Receptors,Thyroxine Receptors,Triiodothyronine Receptors,DIT Receptors,Diiodotyrosine Receptor,MIT Receptors,Monoiodotyrosine Receptors,Receptors, DIT,Receptors, MIT,Receptors, Monoiodotyrosine,Receptors, T3,Receptors, T4,T3 Receptor,T4 Receptor,Thyroid Hormone Receptor,Thyroxine Receptor
D001932 Brain Neoplasms Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain. Brain Cancer,Brain Metastases,Brain Tumors,Cancer of Brain,Malignant Primary Brain Tumors,Neoplasms, Intracranial,Benign Neoplasms, Brain,Brain Neoplasm, Primary,Brain Neoplasms, Benign,Brain Neoplasms, Malignant,Brain Neoplasms, Malignant, Primary,Brain Neoplasms, Primary Malignant,Brain Tumor, Primary,Brain Tumor, Recurrent,Cancer of the Brain,Intracranial Neoplasms,Malignant Neoplasms, Brain,Malignant Primary Brain Neoplasms,Neoplasms, Brain,Neoplasms, Brain, Benign,Neoplasms, Brain, Malignant,Neoplasms, Brain, Primary,Primary Brain Neoplasms,Primary Malignant Brain Neoplasms,Primary Malignant Brain Tumors,Benign Brain Neoplasm,Benign Brain Neoplasms,Benign Neoplasm, Brain,Brain Benign Neoplasm,Brain Benign Neoplasms,Brain Cancers,Brain Malignant Neoplasm,Brain Malignant Neoplasms,Brain Metastase,Brain Neoplasm,Brain Neoplasm, Benign,Brain Neoplasm, Malignant,Brain Neoplasms, Primary,Brain Tumor,Brain Tumors, Recurrent,Cancer, Brain,Intracranial Neoplasm,Malignant Brain Neoplasm,Malignant Brain Neoplasms,Malignant Neoplasm, Brain,Neoplasm, Brain,Neoplasm, Intracranial,Primary Brain Neoplasm,Primary Brain Tumor,Primary Brain Tumors,Recurrent Brain Tumor,Recurrent Brain Tumors,Tumor, Brain
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated
D014176 Protein Biosynthesis The biosynthesis of PEPTIDES and PROTEINS on RIBOSOMES, directed by MESSENGER RNA, via TRANSFER RNA that is charged with standard proteinogenic AMINO ACIDS. Genetic Translation,Peptide Biosynthesis, Ribosomal,Protein Translation,Translation, Genetic,Protein Biosynthesis, Ribosomal,Protein Synthesis, Ribosomal,Ribosomal Peptide Biosynthesis,mRNA Translation,Biosynthesis, Protein,Biosynthesis, Ribosomal Peptide,Biosynthesis, Ribosomal Protein,Genetic Translations,Ribosomal Protein Biosynthesis,Ribosomal Protein Synthesis,Synthesis, Ribosomal Protein,Translation, Protein,Translation, mRNA,mRNA Translations
D014284 Triiodothyronine A T3 thyroid hormone normally synthesized and secreted by the thyroid gland in much smaller quantities than thyroxine (T4). Most T3 is derived from peripheral monodeiodination of T4 at the 5' position of the outer ring of the iodothyronine nucleus. The hormone finally delivered and used by the tissues is mainly T3. Liothyronine,T3 Thyroid Hormone,3,3',5-Triiodothyronine,Cytomel,Liothyronine Sodium,Thyroid Hormone, T3
D014407 Tumor Cells, Cultured Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely. Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured

Related Publications

Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
December 2008, Surgical neurology,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
April 1999, Biological psychiatry,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
August 1994, Endocrinology,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
May 2003, Molecular and cellular endocrinology,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
May 2004, Neurochemical research,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
May 2001, The Journal of clinical endocrinology and metabolism,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
January 2018, Methods in molecular biology (Clifton, N.J.),
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
January 2019, Frontiers in endocrinology,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
October 1998, Journal of dental research,
Tsuyoshi Monden, and Yasuyo Nakajima, and Tetsu Hashida, and Sumiyasu Ishii, and Takuya Tomaru, and Nobuyuki Shibusawa, and Koshi Hashimoto, and Teturou Satoh, and Masanobu Yamada, and Masatomo Mori, and Kikuo Kasai
October 2007, Endocrinology,
Copied contents to your clipboard!