1
|
Druckrey H. Specific Carcinogenic and Teratogenic Effects of ‘Indirect’ Alkylating Methyl and Ethyl compounds, and their Dependency on Stages of Ontogenic Developments. Xenobiotica 2008. [DOI: 10.3109/00498257309151524] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
2
|
Kerr SJ, Borek E. The tRNA methyltransferases. ADVANCES IN ENZYMOLOGY AND RELATED AREAS OF MOLECULAR BIOLOGY 2006; 36:1-27. [PMID: 4563428 DOI: 10.1002/9780470122815.ch1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
3
|
Abstract
The activity of adenosine deaminase (ADA) was determined in whole brain of rats at the embryonic age of 15 days through to adulthood and in nine brain regions in rats 1 day old through to adulthood. In 1-day-old rats, the highest activity was seen in olfactory bulbs (550 +/- 15 nmol/mg protein/30 min) and this was 4.5-fold higher than that in the pons, which was the lowest. In adult animals, olfactory bulb still contained the greatest activity, which was about eightfold higher than hippocampus, which had the lowest. Except for hypothalamus, where ADA activity increased nearly twofold in rats between the ages of 1 and 50 days, significant decreases of as much as fivefold were found in whole brain, superior colliculus, cortex, hippocampus, cerebellum, olfactory bulbs, and olfactory nucleus. In contrast, ADA activity in pons and subcortex remained relatively constant throughout the developmental period. The Km values for ADA in whole brain at 18 days gestation (48 +/- 5 microM) were not significantly different from that observed in adult rats (38 +/- 7 microM), whereas the Vmax values decreased significantly from 339 +/- 9 to 108 +/- 8 nmol/mg protein/30 min. Taken together, the developmental patterns observed in the various brain regions appear not to correspond to any one particular process such as periods of rapid cell proliferation, cell death, synaptogenesis, or myelination. Nor do they correspond to known developmental profiles of transmitters, their receptors, or their metabolic enzymes.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
|
4
|
Pezzoli C, Guaitani A, Villa P, Bartosek I, Stramentinoli G. Lack of influence of S-adenosyl-L-methionine (SAMe) treatment on Walker 256/B carcinoma and SAMe turnover in rats. Toxicol Lett 1982; 12:207-13. [PMID: 7112613 DOI: 10.1016/0378-4274(82)90187-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
5
|
Abstract
Developmental patterns of homologous and heterologous tRNA methylation by cerebellar tRNA methyltransferases are described. The study revealed that: (a) homologous tRNA methylation results in the predominant formation of N2-methylguanine and 1-methyladenine; (b) tRNA methyltransferase of bulk-isolated Purkinje and granule cells methylate E. coli tRNAglu2 in vitro in a characteristic manner, and (c) the methylation of 8-day-old cerebellar, cortical and hepatic tRNA in vivo yields tRNAs containing different proportions of methylated bases. The findings suggest that the presumably cell-specific populations of cerebellar tRNA methyltransferases continue to alter their substrate recognition characteristics up to and beyond the first month of post-natal life.
Collapse
|
6
|
Weber G, Margetan J, Finch CE, Mays LL. Brain transfer ribonucleic acid methyltransferases in young adult and old mice. Exp Gerontol 1979; 14:157-60. [PMID: 456447 DOI: 10.1016/0531-5565(79)90031-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
7
|
Salas CE, Ohlsson WG, Sellinger OZ. The stimulation of cerebral N2-methyl- and N2-2-dimethyl guanine-specific tRNA methyltransferases by methionine sulfoximine: an in vivo study. Biochem Biophys Res Commun 1977; 76:1107-15. [PMID: 332160 DOI: 10.1016/0006-291x(77)90970-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
8
|
Salas CE, Sellinger OZ. Rapid, quantitative separation by high-performance liquid chromatography of methylated bases in transfer RNA. J Chromatogr A 1977; 133:231-6. [PMID: 838804 DOI: 10.1016/s0021-9673(00)89230-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
9
|
Johnson TC, Weck PK. Transcriptional and posttranscriptional events associated with neural maturation. Neurochem Res 1976; 1:557-72. [DOI: 10.1007/bf00965598] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/1976] [Indexed: 11/28/2022]
|
10
|
Salas CE, Cummins CJ, Sellinger OZ. The developmental pattern of homologous and heterologous tRNA methylation in rat brain differential effect of spermidine. Neurochem Res 1976; 1:369-84. [DOI: 10.1007/bf00966229] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/1976] [Indexed: 10/26/2022]
|
11
|
|
12
|
Kaplan BB, Sirlin JL. Macromolecules and behavior II. Training induced alteration in leucine transfer RNA of goldfish brain. Brain Res 1975; 83:451-68. [PMID: 1111811 DOI: 10.1016/0006-8993(75)90836-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Goldfish were trained to swim upright after a polystyrene float had been attached ventrally. The effects of training on the amino acid acceptor activity and methylated albumin-kieselguhr column chromatography profile of several brain isoaccepting tRNA species were studied. Comparison of the kinetics of aminoacylation and chromatography profile of tRNAs from trained and control fish showed no differences for Arginyl-, glutamyl-, histidyl-, lysyl-, phenylalanyl-, seryl, threonyl- or valyl-tRNA. In contrast, training induced alterations in tRNA-Leu activity and activity profile. Training had no effect on brain amino acid pools or liver tRNA-Leu activity. Together, behavioral control experiments and plasma cortisol titers indicated that the training-induced increase in tRNA-Leu activity was not caused by stress, exertion, random disoriented swimming or the minor surgical procedures required. Rather, this activity change seems to correlate with some, as yet unidentified, aspect of behavioral training. The implications of these findings with respect to learning are discussed.
Collapse
|
13
|
Johnson TC, Mathews RA, Chou L. tRNA methyltransferase activity in neonatal and mature mammalian neural tissue. J Neurochem 1974; 23:489-96. [PMID: 4278392 DOI: 10.1111/j.1471-4159.1974.tb06050.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
14
|
|
15
|
|
16
|
Druckrey H, Ivankovic S, Gimmy J. [Cancerogenic effects of methyl- and ethyl-nitrosourea (MNU and ENU) at single intracerebral and intracarotidal injection in newborn and young BD-rats]. ZEITSCHRIFT FUR KREBSFORSCHUNG UND KLINISCHE ONKOLOGIE. CANCER RESEARCH AND CLINICAL ONCOLOGY 1973; 79:282-97. [PMID: 4270235 DOI: 10.1007/bf00304022] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
17
|
Judes C, Jacob M. Differentiation of chick embryo cerebral hemispheres. 3. Incorporation of ( 3 H-methyl)methionine into 29 S, 18 S and 4 S RNAs. Brain Res 1973; 52:333-44. [PMID: 4700709 DOI: 10.1016/0006-8993(73)90669-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
18
|
|
19
|
Kerr SJ, Borek E. Regulation of the tRNA methyltransferases in normal and neoplastic tissues. ADVANCES IN ENZYME REGULATION 1973; 11:63-77. [PMID: 4799201 DOI: 10.1016/0065-2571(73)90009-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
20
|
Sunde D, McKelvy J, Sachs H. Studies on RNA methylation and dissociation between RNA and protein biosynthesis in neural lobes of dehydrated rats. Brain Res 1972; 47:237-53. [PMID: 4641269 DOI: 10.1016/0006-8993(72)90265-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
21
|
|
22
|
|
23
|
Bradford DS, Hacker B, Clark I. Transfer ribonucleic acid methylases of bone. Studies on vitamin A and D deficiency. Biochem J 1972; 126:1057-66. [PMID: 5073719 PMCID: PMC1178527 DOI: 10.1042/bj1261057a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Methods were devised for the assay of tRNA methylases of rat bone. The activities of bone tRNA methylases are similar to those from other mammalian tissues. However, unlike reports on liver methylases, no inhibitors were found in the supernatant fraction from pH5 precipitate of bone extracts. The effects of vitamins A and D on the methylation of tRNA by cell-free extracts of rat bone were studied. Deficiency of either vitamin resulted in a decrease in the rate and extent of tRNA methylation, whereas the administration of vitamin A to hypovitaminotic-A rats and vitamin D to hypovitaminotic-D rats increased the rate and extent of tRNA methylation. These effects appear to be apart from changes in ribonuclease activity or in concentrations of calcium or magnesium. No evidence of inhibitors of tRNA methylases was found in bone extracts from vitamin-deficient rats nor of activators in bone extracts from deficient rats given vitamin A or D. The pattern of tRNA methylation under conditions of vitamin A or D deficiency was not changed, suggesting a generalized cellular deficiency. It was of significance to find that the specificity for methylation of specific bases in tRNA was different after the administration of vitamin A as contrasted with the effects of vitamin D. The possible significance of tRNA methylation to the biochemical action of the vitamins on bone is discussed.
Collapse
|
24
|
Buch L, Streeter D, Halpern RM, Simon LN, Stout MG, Smith RA. Inhibition of transfer ribonucleic acid methylase activity from several human tumors by nicotinamide and nicotinamide analogs. Biochemistry 1972; 11:393-7. [PMID: 4258169 DOI: 10.1021/bi00753a015] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
25
|
|
26
|
Wilkinson R, Pillinger DJ. Effect of the carcinogen N-nitrosomethylurea on the tRNA methylase activity of cells cultured in vitro. Int J Cancer 1971; 8:401-9. [PMID: 5167593 DOI: 10.1002/ijc.2910080307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
27
|
|
28
|
Eleftheriou BE, Hancock RL. Hormonal regulation of sRNA methylase activity in regional brain areas in Peromyscus maniculatus bairdii. Brain Res 1971; 28:311-6. [PMID: 5113522 DOI: 10.1016/0006-8993(71)90662-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
29
|
Pillinger DJ, Wilkinson R. Assay of tRNA methylase enzymes in studies of malignant transformation in vitro. LIFE SCIENCES. PT. 2: BIOCHEMISTRY, GENERAL AND MOLECULAR BIOLOGY 1971; 10:241-9. [PMID: 4930321 DOI: 10.1016/0024-3205(71)90063-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
30
|
Kerr SJ. Absence of a natural inhibitor of the tRNA methylases from fetal and tumor tissues. Proc Natl Acad Sci U S A 1971; 68:406-10. [PMID: 5277093 PMCID: PMC388949 DOI: 10.1073/pnas.68.2.406] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The inhibitor of tRNA methylases of normal adult tissues has been resolved into two fractions, a high molecular weight protein and a low molecular weight (<700) component. The high molecular weight component is absent from embryonic and tumor tissues, both of which are known to possess high tRNA methylase capacity.
Collapse
|
31
|
|
32
|
Breier B, Holley RW. Enzymatic methylation of transfer RNA by extracts of polyoma virus-transformed cells. BIOCHIMICA ET BIOPHYSICA ACTA 1970; 213:365-70. [PMID: 4323693 DOI: 10.1016/0005-2787(70)90044-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
33
|
Volpe JJ, Laster L. Trans-sulphuration in primate brain: regional distribution of methionine-activating enzyme in the brain of the rhesus monkey at various stages of development. J Neurochem 1970; 17:413-24. [PMID: 4992826 DOI: 10.1111/j.1471-4159.1970.tb02228.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
34
|
|
35
|
Hormonal Regulation of Transfer Ribonucleic Acid and Transfer Ribonucleic Acid-methylating Enzymes during Development of the Mouse Mammary Gland. J Biol Chem 1969. [DOI: 10.1016/s0021-9258(18)63638-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
36
|
Viale GL. Biochemical patterns in brain tumours. 3. Transfer ribonucleic acid. Acta Neurochir (Wien) 1969; 21:123-37. [PMID: 5365148 DOI: 10.1007/bf01540920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
37
|
Svensson I, Björk GR, Lundahl P. Studies on microbial RNA. Properties of tRNA methylases from Saccharomyces cerevisiae. EUROPEAN JOURNAL OF BIOCHEMISTRY 1969; 9:216-21. [PMID: 4896261 DOI: 10.1111/j.1432-1033.1969.tb00597.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
38
|
Dellweg H, Gerner R, Wacker A. Quantitative and qualitative changes in ribonucleic acids of rat brain dependent on age and training experiments. J Neurochem 1968; 15:1109-19. [PMID: 5711124 DOI: 10.1111/j.1471-4159.1968.tb06828.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
39
|
Kaye AM, Leboy PS. Methylation of RNA by mouse organs and tumors: ionic stimulation in vitro. BIOCHIMICA ET BIOPHYSICA ACTA 1968; 157:289-302. [PMID: 4297008 DOI: 10.1016/0005-2787(68)90083-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
40
|
Baguley BC, Staehelin M. The specificity of transfer ribonucleic acid methylases from rat liver. Biochemistry 1968; 7:45-50. [PMID: 4921283 DOI: 10.1021/bi00841a007] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|