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Exploiting fluctuations in gene expression to detect causal interactions between genes

Author(s): Joly-Smith E; Talpur MM; Allard P; Papazotos F; Potvin-Trottier L; Hilfinger A;

Characterizing and manipulating cellular behavior requires a mechanistic understanding of the causal interactions between cellular components. We present an approach to detect causal interactions between genes without the need to perturb the physiological state of cells. This approach exploits naturally occurring cell-to-cell variability which is experime ...

Article GUID: 41401079


Intraspecific complexity in mercury contamination of two harvested fishes revealed by genetics: Food security and conservation implications

Author(s): Gibelli J; Michaelides S; Won H; Chamlian B; Bampfylde C; Maclean B; Giroux P; Gray QZ; Voyageur M; Jeon HB; Bouchard R; Fraser DJ;

Contaminants in harvested species can pose serious concerns for health and food security. However, the risks of contaminant exposure can be challenging to track as many species migrate extensively between breeding and feeding environments and usually form genetically distinct populations. Such in ...

Article GUID: 41380599


Activation of infralimbic cortex neurons projecting to the nucleus accumbens shell suppresses discriminative stimulus-triggered relapse to cocaine seeking in rats

Author(s): Algallal HE; Laplante I; Casale D; Najafipashaki S; Pomerleau A; Paquette T; Samaha AN;

Rationale: Cocaine addiction is marked by high relapse rates, often triggered by drug-associated cues in the environment. These can be conditioned stimuli (CSs), which occur after drug intake and signal drug delivery, and discriminative stimuli (DSs), which signal that seeking responses will produce drug, before any such responses have been initiated (i.e ...

Article GUID: 41372546


Imagining the beat: causal evidence for dorsal premotor cortex (dPMC) role in beat imagery via transcranial magnetic stimulation (TMS)

Author(s): Lazzari G; Ferreri L; Cattaneo L; Penhune V; Lega C;

The ability to internally generate and maintain a rhythmic pulse, i.e., beat imagery, is a fundamental aspect of musical cognition. While recent theories propose that premotor regions support internal temporal predictions during rhythm perception and imagery, direct causal evidence remains limited. In this study, we investigated the specific contributions ...

Article GUID: 41248776


A corpus-assisted discourse study of parental concerns regarding multilingual child-rearing

Author(s): Quirk E; Brouillard M; Ahooja A; Ballinger S; Polka L; Byers-Heinlein K; Kircher R;

Many parents have concerns about raising their children with multiple languages. However, there is a paucity of previous research regarding parental concerns about multilingual child-rearing, particularly in multilingual societies. We address this gap with a corpus-assisted discourse study of parental concerns regarding multilingual child-rearing in Quebe ...

Article GUID: 41199774


Exploring neurologists perspectives: barriers and facilitators in implementing cognitive care planning

Author(s): Ge S; Xiao X; Huang B; Britt KC;

Article GUID: 41163714


Contrasting microbial assembly patterns in the woody endosphere of hybrid and non-hybrid em Populus /em trees

Author(s): Grant KR; Kembel SW; Naik S; Dayanandan S;

Endophytes asymptomatically infect virtually all plant species, yet little is known about endophyte community assembly and diversity within the woody tissues of forest trees. We utilised phylogenetic null models of alpha (ses.MNTDab and ses.MPDab) and beta diversity (ses.ßMNTDab and ses.ßMPDab) to infer the role of deterministic and stochastic ecological ...

Article GUID: 41089252


An examination of the quinic acid utilization genes in Aspergillus niger reveals the involvement of two pH-dependent permeases

Author(s): Sgro M; Reid ID; Arentshorst M; Ram AFJ; Tsang A;

Many microorganisms are able to use plant-derived aromatic and cyclic compounds like the common plant secondary metabolite quinic acid as carbon and energy sources. In fungi, three enzymatic steps convert quinic acid into the common intermediate protocatechuic acid, which is then further converted into TCA cycle intermediates. The genes encoding these thr ...

Article GUID: 40853219


Disentangling prediction error and value in a formal test of dopamine s role in reinforcement learning

Author(s): Usypchuk AA; Maes EJP; Lozzi M; Avramidis DK; Schoenbaum G; Esber GR; Gardner MPH; Iordanova MD;

The discovery that midbrain dopamine (DA) transients can be mapped onto reward prediction errors (RPEs), the critical signal that drives learning, is a landmark in neuroscience. Causal support for the RPE hypothesis comes from studies showing that stimulating DA neurons can drive learning under c ...

Article GUID: 40738112


PARPAL: PARalog Protein Redistribution using Abundance and Localization in Yeast Database

Author(s): Greco BM; Zapata G; Dandage R; Papkov M; Pereira V; Lefebvre F; Bourque G; Parts L; Kuzmin E;

Whole-genome duplication (WGD) events are common across various organisms; however, the retention and evolution of WGD paralogs is not fully understood. Quantitative measure of protein redistribution in response to the deletion of their WGD paralog provides insight into sources of gene retention. ...

Article GUID: 40580499


Single-cell imaging of protein dynamics of paralogs reveals sources of gene retention

Author(s): Dandage R; Papkov M; Greco BM; Pereira V; Fishman D; Friesen H; Wang K; Styles EB; Kraus O; Grys B; Zapata G; Lefebvre F; Bourque G; Boone C; Andrews BJ; Parts L; Kuzmin E;

Gene duplication is common across the Tree of Life and contributes to genomic robustness. In this study, we examined changes in the subcellular localization and abundance of proteins in response to the deletion of their paralogs originating from the whole-genome duplication event, which is a larg ...

Article GUID: 40585364


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