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Lis1 dynein interactome dataset

ABSTRACT: Interactome study of Lis1 and dynein subunit DIC1 from mammalian cells

INSTRUMENT(S):

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Culture, Early Embryonic Cell

SUBMITTER: Subbareddy Maddika

LAB HEAD: Subbareddy Maddika

PROVIDER: PXD058912 | Pride | 2025-11-13

REPOSITORIES: Pride

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			Action	DRS
	114070.mzXML	Mzxml
	114071.mzXML	Mzxml
	114072.mzXML	Mzxml
	114073.mzXML	Mzxml
	75083.mzXML	Mzxml

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LIS1 RNA-binding orchestrates the mechanosensitive properties of embryonic stem cells in AGO2-dependent and independent ways

Project description:Lissencephaly-1 (LIS1) is associated with neurodevelopmental diseases and is known to regulate the molecular motor cytoplasmic dynein activity. Here we show that LIS1 is essential for the viability of mouse embryonic stem cells (mESCs), and it governs the physical properties of these cells. LIS1 dosage substantially affects gene expression, and we uncovered an unexpected interaction of LIS1 with RNA and RNA-binding proteins, most prominently the Argonaute complex. We demonstrate that LIS1 overexpression partially rescued the extracellular matrix (ECM) expression and mechanosensitive genes conferring stiffness to Argonaute null mESCs. Collectively, our data transforms the current perspective on the roles of LIS1 in post-transcriptional regulation underlying development and mechanosensitive processes.

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Project description:Viruses interact with the intracellular transport machinery to promote viral replication. Such host-virus interactions can drive host gene adaptation, leaving signatures of pathogen-driven evolution in host genomes. Here we leverage these genetic signatures to identify the dynein activating adaptor, ninein-like (NINL), as a critical component in the antiviral innate immune response and as a target of viral antagonism. Unique among genes en¬¬coding for dynein subunits, subunits of its co-factor dynactin, and dynein activating adaptors, NINL has evolved under recurrent positive selection, specifically in its carboxy-terminal cargo binding region. Consistent with a role for NINL in host immunity, NINL knockout cells are more permissive to viral replication as a result of a severe attenuation of interferon stimulated gene (ISG) production following interferon treatment. Moreover, we show that proteases encoded by diverse picornaviruses and coronaviruses cleave and disrupt NINL function in a host- and virus-specific manner. Our work reveals the importance of NINL in the antiviral response and the utility of using signatures of host-virus conflicts to uncover new components of antiviral immunity and targets of viral antagonism.

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Project description:Mutation or deletion of LIS1 (Lissencephaly-1) underlies classical lissencephaly, a migration disorder resulting in brain malformation, epilepsy and mental retardation. Orthologues for LIS1 genes (lis1a and lis1b) are ubiquitously expressed in developing zebrafish larvae, but the functional consequences of Lis1 knockdown are unknown. Here we used lis1-specific morpholino oligonucleotides (MOs, targeting protein translation or mRNA splicing, respectively) to transiently knockdown Lis1 expression in zebrafish. Injection of lis1 MOs resulted in morphological changes including microcephaly. At four days post-fertilization, lis1 morphants exhibited spontaneous convulsive behavior and abnormal large-amplitude electrographic discharge resembling that seen in acute and genetic zebrafish models of epilepsy. Abnormal brain development and neuronal migration defects were observed when lis1 MO injections were made into fluorescent reporter lines demarcating interneuron distribution (Dlx5a/6a:GFP) and brain structure (GBT0133:mRFP). Microarray analysis for ~44,000 Danio rerio transcripts identified 215 up-regulated and 160 down-regulated genes. Quantitative PCR and whole-mount in situ hybridization were used to validate these results for twenty and seven genes, respectively. These findings in a simple vertebrate model reproducing neuroanatomical and epileptic hallmarks of the human condition represent a novel approach to the study of childhood seizure disorders associated with a single gene mutation 4 WT samples (sample= 10 pooled larvae) and 4 Lis1Morphants slight phenotype (sample= 10 pooled larvae) were collected at 4dpf (days post fertilization). The morphants were selected based on phenotype and seizure behavior. Both groups of fish derived from same pools of eggs

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