2003
DOI: 10.1016/s0092-8674(03)00079-5
|View full text |Cite
|
Sign up to set email alerts
|

The Fragile X Syndrome Protein FMRP Associates with BC1 RNA and Regulates the Translation of Specific mRNAs at Synapses

Abstract: The Fragile X syndrome, which results from the absence of functional FMRP protein, is the most common heritable form of mental retardation. Here, we show that FMRP acts as a translational repressor of specific mRNAs at synapses. Interestingly, FMRP associates not only with these target mRNAs, but also with the dendritic, non-translatable RNA BC1. Blocking of BC1 inhibits the interaction of FMRP with its target mRNAs. Furthermore, BC1 binds directly to FMRP and can also associate, in the absence of any protein,… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

36
680
5
11

Year Published

2004
2004
2020
2020

Publication Types

Select...
6
2

Relationship

0
8

Authors

Journals

citations
Cited by 617 publications
(732 citation statements)
references
References 59 publications
36
680
5
11
Order By: Relevance
“…The RNA (2 mg) was DNase treated (Amersham Pharmacia Biotech), reverse-transcribed into cDNA and PCR-amplified as described previously. 12 Specific primers designed to amplify the Rac1 mRNA or the ribosomal protein S6 mRNA were used. The expression levels of Rac1 mRNA in HepG2 cells were quantified by normalizing its respective cDNA level to the housekeeping human rpS6 cDNA level.…”
mentioning
confidence: 99%
“…The RNA (2 mg) was DNase treated (Amersham Pharmacia Biotech), reverse-transcribed into cDNA and PCR-amplified as described previously. 12 Specific primers designed to amplify the Rac1 mRNA or the ribosomal protein S6 mRNA were used. The expression levels of Rac1 mRNA in HepG2 cells were quantified by normalizing its respective cDNA level to the housekeeping human rpS6 cDNA level.…”
mentioning
confidence: 99%
“…Toutefois, dans de nombreux cas familiaux dont le phénotype est clairement lié à l'X (58 sur les 80 familles RMX, par exemple), aucune mutation n'a été trouvée, soit parce que la recherche de mutations n'a pas été systématiquement effectuée pour tous les gènes RMLX connus dans un intervalle génétique donné, soit parce qu'elles affectent de nouveaux gènes non encore identifiés. Ainsi, le nombre total de gènes impliqués dans les RMLX est difficile à estimer à ce jour, et pourrait varier du simple au double (jusqu'à 100) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] …”
Section: Discussionunclassified
“…La fréquence de cette situation avait attiré l'attention sur les hommes prémutés : il apparut alors que la maladie les atteignant à partir de 50 ans environ, n'était pas une maladie de Parkinson. L'examen clinique et neurologique soigneux de 5 hommes de plus de 60 ans montra en effet qu'il s'agissait d'une forme particulière de maladie neurodégénérative [6] ; ce travail préliminaire fut ensuite confirmé par des études ultérieures, qui permirent de définir une nouvelle entité clinique [7] : à l'ataxie avec tremblements intentionnels progressifs se surajoutent un déficit des fonctions cognitives, des pertes de mémoire, une anxiété et, parfois, une neuropathie périphérique, ainsi qu'une faiblesse musculaire, une incontinence urinaire et anale et une impuissance. À l'IRM, il existe une hyperintensité du signal T2 au niveau du cervelet (matière blanche et pédoncules cérébelleux).…”
Section: Syndrome Tremblement-ataxie (Fxtas)unclassified
See 1 more Smart Citation
“…If the number of repeats goes above 200, hypermethylation of the repeat sequence and an adjacent CpG island occurs, which leads to silencing of the gene and therefore an absence of fragile X mental retardation protein (FMRP) [5,6]. This protein is an RNA-binding protein with nuclear localization and exports signals that has been proven to associate with translating polyribosomes and messenger RNAs (mRNAs), which suggests that it may shuttle between the nucleus and cytoplasm and act as a translational modulator of specific mRNAs [7][8][9]. Absence of FMRP is the cause of FXS; the suggested mechanism involves a misregulation of protein synthesis during synapse development, which affects this process and brain plasticity, thus ultimately leading to mental retardation [7].…”
Section: Introductionmentioning
confidence: 99%