FMP Publications

Our publications are recorded in a searchable database since 2010, updates will be added regularly.

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References
Identification of Novel Nuclear Factor of Activated T Cell (NFAT)-associated Proteins in T Cells
Gabriel(*), C. H., Gross(*), F., Karl(*), M., Stephanowitz, H., Hennig(*), A. F., Weber(*), M., Gryzik(*), S., Bachmann(*), I., Hecklau(*), K., Wienands(*), J., Schuchhardt(*), J., Herzel(*), H., Radbruch(*), A., Krause, E.; Baumgrass(*), R.
J Biol Chem, 291:24172-24187
(2016)

Tags: Mass Spectrometry (Krause, E.)

Abstract: Transcription factors of the nuclear factor of activated T cell (NFAT) family are essential for antigen-specific T cell activation and differentiation. Their cooperative DNA binding with other transcription factors, such as AP1 proteins (FOS, JUN, and JUNB), FOXP3, IRFs, and EGR1, dictates the gene regulatory action of NFATs. To identify as yet unknown interaction partners of NFAT, we purified biotin-tagged NFATc1/alphaA, NFATc1/betaC, and NFATc2/C protein complexes and analyzed their components by stable isotope labeling by amino acids in cell culture-based mass spectrometry. We revealed more than 170 NFAT-associated proteins, half of which are involved in transcriptional regulation. Among them are many hitherto unknown interaction partners of NFATc1 and NFATc2 in T cells, such as Raptor, CHEK1, CREB1, RUNX1, SATB1, Ikaros, and Helios. The association of NFATc2 with several other transcription factors is DNA-dependent, indicating cooperative DNA binding. Moreover, our computational analysis discovered that binding motifs for RUNX and CREB1 are found preferentially in the direct vicinity of NFAT-binding motifs and in a distinct orientation to them. Furthermore, we provide evidence that mTOR and CHEK1 kinase activity influence NFAT's transcriptional potency. Finally, our dataset of NFAT-associated proteins provides a good basis to further study NFAT's diverse functions and how these are modulated due to the interplay of multiple interaction partners.

De novo and inherited mutations in the X-linked gene CLCN4 are associated with syndromic intellectual disability and behavior and seizure disorders in males and females
Palmer(*), E. E., Stuhlmann, T., Weinert, S., Haan(*), E., Van Esch(*), H., Holvoet(*), M., Boyle(*), J., Leffler(*), M., Raynaud(*), M., Moraine(*), C., van Bokhoven(*), H., Kleefstra(*), T., Kahrizi(*), K., Najmabadi(*), H., Ropers(*), H. H., Delgado(*), M. R., Sirsi(*), D., Golla(*), S., Sommer(*), A., Pietryga(*), M. P., Chung(*), W. K., Wynn(*), J., Rohena(*), L., Bernardo(*), E., Hamlin(*), D., Faux(*), B. M., Grange(*), D. K., Manwaring(*), L., Tolmie(*), J., Joss(*), S., Cobben(*), J. M., Duijkers(*), F. A., Goehringer(*), J. M., Challman(*), T. D., Hennig(*), F., Fischer(*), U., Grimme(*), A., Suckow(*), V., Musante(*), L., Nicholl(*), J., Shaw(*), M., Lodh(*), S. P., Niu(*), Z., Rosenfeld(*), J. A., Stankiewicz(*), P., Jentsch, T. J., Gecz(*), J., Field(*), M.; Kalscheuer(*), V. M.
Molecular psychiatry,
(2016)

Tags: Physiology and Pathology of Ion Transport (Jentsch)

Abstract: Variants in CLCN4, which encodes the chloride/hydrogen ion exchanger CIC-4 prominently expressed in brain, were recently described to cause X-linked intellectual disability and epilepsy. We present detailed phenotypic information on 52 individuals from 16 families with CLCN4-related disorder: 5 affected females and 2 affected males with a de novo variant in CLCN4 (6 individuals previously unreported) and 27 affected males, 3 affected females and 15 asymptomatic female carriers from 9 families with inherited CLCN4 variants (4 families previously unreported). Intellectual disability ranged from borderline to profound. Behavioral and psychiatric disorders were common in both child- and adulthood, and included autistic features, mood disorders, obsessive-compulsive behaviors and hetero- and autoaggression. Epilepsy was common, with severity ranging from epileptic encephalopathy to well-controlled seizures. Several affected individuals showed white matter changes on cerebral neuroimaging and progressive neurological symptoms, including movement disorders and spasticity. Heterozygous females can be as severely affected as males. The variability of symptoms in females is not correlated with the X inactivation pattern studied in their blood. The mutation spectrum includes frameshift, missense and splice site variants and one single-exon deletion. All missense variants were predicted to affect CLCN4's function based on in silico tools and either segregated with the phenotype in the family or were de novo. Pathogenicity of all previously unreported missense variants was further supported by electrophysiological studies in Xenopus laevis oocytes. We compare CLCN4-related disorder with conditions related to dysfunction of other members of the CLC family.Molecular Psychiatry advance online publication, 23 August 2016; doi:10.1038/mp.2016.135.

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Leibniz-Forschungsinstitut für Molekulare Pharmakologie im Forschungsverbund Berlin e.V. (FMP)
Campus Berlin-Buch
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13125 Berlin, Germany
+4930 94793 - 100 
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info(at)fmp-berlin.de

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