Relevant bibliographies by topics / C9ORF72 complex

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Academic literature on the topic 'C9ORF72 complex'

Author: Grafiati
Published: 7 July 2024
Last updated: 31 July 2025

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Journal articles on the topic "C9ORF72 complex"

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Tang, Dan, Jingwen Sheng, Liangting Xu, et al. "Cryo-EM structure of C9ORF72–SMCR8–WDR41 reveals the role as a GAP for Rab8a and Rab11a." Proceedings of the National Academy of Sciences 117, no. 18 (2020): 9876–83. http://dx.doi.org/10.1073/pnas.2002110117.

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A massive intronic hexanucleotide repeat (GGGGCC) expansion in C9ORF72 is a genetic origin of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Recently, C9ORF72, together with SMCR8 and WDR41, has been shown to regulate autophagy and function as Rab GEF. However, the precise function of C9ORF72 remains unclear. Here, we report the cryogenic electron microscopy (cryo-EM) structure of the human C9ORF72–SMCR8–WDR41 complex at a resolution of 3.2 Å. The structure reveals the dimeric assembly of a heterotrimer of C9ORF72–SMCR8–WDR41. Notably, the C-terminal tail of C9ORF72 and
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2

Nörpel, Julia, Simone Cavadini, Andreas D. Schenk, et al. "Structure of the human C9orf72-SMCR8 complex reveals a multivalent protein interaction architecture." PLOS Biology 19, no. 7 (2021): e3001344. http://dx.doi.org/10.1371/journal.pbio.3001344.

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A major cause of familial amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) spectrum disorder is the hexanucleotide G4C2 repeat expansion in the first intron of the C9orf72 gene. Many underlying mechanisms lead to manifestation of disease that include toxic gain-of-function by repeat G4C2 RNAs, dipeptide repeat proteins, and a reduction of the C9orf72 gene product. The C9orf72 protein interacts with SMCR8 and WDR41 to form a trimeric complex and regulates multiple cellular pathways including autophagy. Here, we report the structure of the C9orf72-SMCR8 complex at 3.8 Å reso
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Yang, Mei, Chen Liang, Kunchithapadam Swaminathan, et al. "A C9ORF72/SMCR8-containing complex regulates ULK1 and plays a dual role in autophagy." Science Advances 2, no. 9 (2016): e1601167. http://dx.doi.org/10.1126/sciadv.1601167.

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The intronic GGGGCC hexanucleotide repeat expansion in chromosome 9 open reading frame 72 (C9ORF72) is a prevalent genetic abnormality identified in both frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). Smith-Magenis syndrome chromosomal region candidate gene 8 (SMCR8) is a protein with unclear functions. We report that C9ORF72 is a component of a multiprotein complex containing SMCR8, WDR41, and ATG101 (an important regulator of autophagy). The C9ORF72 complex displays guanosine triphosphatase (GTPase) activity and acts as a guanosine diphosphate–guanosine 5′-triphosphat
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4

Amick, Joseph, Arun Kumar Tharkeshwar, Catherine Amaya,, and Shawn M. Ferguson. "WDR41 supports lysosomal response to changes in amino acid availability." Molecular Biology of the Cell 29, no. 18 (2018): 2213–27. http://dx.doi.org/10.1091/mbc.e17-12-0703.

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C9orf72 mutations are a major cause of amyotrophic lateral sclerosis and frontotemporal dementia. The C9orf72 protein undergoes regulated recruitment to lysosomes and has been broadly implicated in control of lysosome homeostasis. However, although evidence strongly supports an important function for C9orf72 at lysosomes, little is known about the lysosome recruitment mechanism. In this study, we identify an essential role for WDR41, a prominent C9orf72 interacting protein, in C9orf72 lysosome recruitment. Analysis of human WDR41 knockout cells revealed that WDR41 is required for localization
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5

Amick, Joseph, Agnes Roczniak-Ferguson, and Shawn M. Ferguson. "C9orf72 binds SMCR8, localizes to lysosomes, and regulates mTORC1 signaling." Molecular Biology of the Cell 27, no. 20 (2016): 3040–51. http://dx.doi.org/10.1091/mbc.e16-01-0003.

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Hexanucleotide expansion in an intron of the C9orf72 gene causes amyotrophic lateral sclerosis and frontotemporal dementia. However, beyond bioinformatics predictions that suggested structural similarity to folliculin, the Birt-Hogg-Dubé syndrome tumor suppressor, little is known about the normal functions of the C9orf72 protein. To address this problem, we used genome-editing strategies to investigate C9orf72 interactions, subcellular localization, and knockout (KO) phenotypes. We found that C9orf72 robustly interacts with SMCR8 (a protein of previously unknown function). We also observed tha
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6

Chong, Zhao Zhong, and Nizar Souayah. "Targeting Gene C9orf72 Pathogenesis for Amyotrophic Lateral Sclerosis." International Journal of Molecular Sciences 26, no. 9 (2025): 4276. https://doi.org/10.3390/ijms26094276.

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Amyotrophic lateral sclerosis (ALS) is a fatal adult neurodegenerative disorder. Since no cure has been found, finding effective therapeutic targets for ALS remains a major challenge. Gene C9orf72 mutations with the formation of hexanucleotide repeat (GGGGCC) expansion (HRE) have been considered the most common genetic pathogenesis of ALS. The literature review indicates that the C9orf72 HRE causes both the gain-of-function toxicity and loss of function of C9ORF72. The formation of RNA foci and dipeptide repeats (DPRs) resulting from HRE is responsible for toxic function gain. The RNA foci can
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7

Chandra, Sunandini, and C. Patrick Lusk. "Emerging Connections between Nuclear Pore Complex Homeostasis and ALS." International Journal of Molecular Sciences 23, no. 3 (2022): 1329. http://dx.doi.org/10.3390/ijms23031329.

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Developing effective treatments for neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) requires understanding of the underlying pathomechanisms that contribute to the motor neuron loss that defines the disease. As it causes the largest fraction of familial ALS cases, considerable effort has focused on hexanucleotide repeat expansions in the C9ORF72 gene, which encode toxic repeat RNA and dipeptide repeat (DPR) proteins. Both the repeat RNA and DPRs interact with and perturb multiple elements of the nuclear transport machinery, including shuttling nuclear transport receptors
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8

Alvarez-Mora, Maria Isabel, Gloria Garrabou, Tamara Barcos, et al. "Bioenergetic and Autophagic Characterization of Skin Fibroblasts from C9orf72 Patients." Antioxidants 11, no. 6 (2022): 1129. http://dx.doi.org/10.3390/antiox11061129.

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The objective of this study is to describe the alterations occurring during the neurodegenerative process in skin fibroblast cultures from C9orf72 patients. We characterized the oxidative stress, autophagy flux, small ubiquitin-related protein SUMO2/3 levels as well as the mitochondrial function in skin fibroblast cultures from C9orf72 patients. All metabolic and bioenergetic findings were further correlated with gene expression data obtained from RNA sequencing analysis. Fibroblasts from C9orf72 patients showed a 30% reduced expression of C9orf72, ~3-fold increased levels of oxidative stress
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9

McAlpine, William, Lei Sun, Kuan-wen Wang, et al. "Excessive endosomal TLR signaling causes inflammatory disease in mice with defective SMCR8-WDR41-C9ORF72 complex function." Proceedings of the National Academy of Sciences 115, no. 49 (2018): E11523—E11531. http://dx.doi.org/10.1073/pnas.1814753115.

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The SMCR8-WDR41-C9ORF72 complex is a regulator of autophagy and lysosomal function. Autoimmunity and inflammatory disease have been ascribed to loss-of-function mutations of Smcr8 or C9orf72 in mice. In humans, autoimmunity has been reported to precede amyotrophic lateral sclerosis caused by mutations of C9ORF72. However, the cellular and molecular mechanisms underlying autoimmunity and inflammation caused by C9ORF72 or SMCR8 deficiencies remain unknown. Here, we show that splenomegaly, lymphadenopathy, and activated circulating T cells observed in Smcr8−/− mice were rescued by triple knockout
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10

Liang, Chen, Qiang Shao, Wei Zhang, et al. "Smcr8 deficiency disrupts axonal transport-dependent lysosomal function and promotes axonal swellings and gain of toxicity in C9ALS/FTD mouse models." Human Molecular Genetics 28, no. 23 (2019): 3940–53. http://dx.doi.org/10.1093/hmg/ddz230.

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Abstract G4C2 repeat expansions in an intron of C9ORF72 cause the most common familial amyotrophic lateral sclerosis and frontotemporal dementia (collectively, C9ALS/FTD). Mechanisms and mediators of C9ALS/FTD pathogenesis remain poorly understood. C9orf72 and Smcr8 form a protein complex. Here, we show that expression of Smcr8, like C9orf72, is reduced in C9ALS/FTD mouse models and patient tissues. Since Smcr8 is highly conserved between human and mouse, we evaluated the effects of Smcr8 downregulation in mice. Smcr8 knockout (KO) mice exhibited motor behavior deficits, which resemble those o
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Dissertations / Theses on the topic "C9ORF72 complex"

1

Pietri, David. "Structure and function of the C9ORF72-SMCR8-WDR41 complex and its implication for Amyotrophic Lateral Sclerosis (ALS)." Electronic Thesis or Diss., Strasbourg, 2023. http://www.theses.fr/2023STRAJ087.

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La sclérose latérale amyotrophique (SLA ou maladie de Charcot) est la troisième maladie neurodégénérative la plus répandue. La principale cause génétique de la SLA est une expansion de répétitions GGGGCC dans le gène C9ORF72, dont la protéine forme un complexe avec les protéines SMCR8 et WDR41. Afin de mieux comprendre ses fonctions moléculaires, résoudre sa structure était un objectif principal de ma thèse. En parallèle, nous avons découvert que C9ORF72 régule un mécanisme nouvellement décrit de biogenèse de nouveaux lysosomes nommé reformation autophagique des lysosomes (ALR). Ce processus a
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