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CAV2-expressing Nerves induce Metabolic Switch toward Mitochondrial Oxidative Phosphorylation to Promote Cancer Stemness

ABSTRACT: CAV2-expressing Nerves induce Metabolic Switch toward Mitochondrial Oxidative Phosphorylation to Promote Cancer Stemness

PROVIDER: PRJNA1219051 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR33242614_1.fastq.gz	Fastqsanger.gz
	SRR33242614_2.fastq.gz	Fastqsanger.gz
	SRR33242615_1.fastq.gz	Fastqsanger.gz
	SRR33242615_2.fastq.gz	Fastqsanger.gz
	SRR33242616_1.fastq.gz	Fastqsanger.gz

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CAV2-expressing Nerves induce Metabolic Switch toward Mitochondrial Oxidative Phosphorylation to Promote Cancer Stemness

Project description:Cancer cells and the nervous system engage in a dynamic interplay, significantly influencing initiation and progression in head and neck squamous cell carcinoma (HNSCC). Our findings highlight that cancer cells drive an increase in caveolin-2 (Cav2) expression within trigeminal ganglia and associated neural fibers in the tumor milieu, fostering a reciprocal attractant relationship between tumor cells and nerves. Notably, the knockout of Cav2, either globally or specifically in sensory neurons or glial cells, markedly attenuates the growth of orthotopically implanted tongue tumors. Moreover, Cav2-expressing nerves are implicated in shifting cancer cell metabolism towards mitochondrial oxidative phosphorylation, a process involved in maintenance of cancer stem cells (CSCs). Our results also demonstrate that Cav2-expressing nerves confer stemness properties to cancer cells. Disruption of Cav2 expression, both globally and in specific neural cell types, impedes tumorigenesis and progression in a 4-NQO-induced HNSCC mouse model. This interplay between cancer cells, neurons, and glial cells unveils a mechanism through which tumor-associated nerves contribute to cancer stemness via metabolic reprogramming, presenting a novel avenue for anticancer therapy.

2025-02-04 | PXD060212 | Pride

CAV2-expressing Nerves induce Metabolic Switch toward Mitochondrial Oxidative Phosphorylation to Promote Cancer Stemness

Project description:Cancer cells and the nervous system engage in a dynamic interplay, significantly influencing initiation and progression in head and neck squamous cell carcinoma (HNSCC). Our findings highlight that cancer cells drive an increase in caveolin-2 (Cav2) expression within trigeminal ganglia and associated neural fibers in the tumor milieu, fostering a reciprocal attractant relationship between tumor cells and nerves. Notably, the knockout of Cav2, either globally or specifically in sensory neurons or glial cells, markedly attenuates the growth of orthotopically implanted tongue tumors. Moreover, Cav2-expressing nerves are implicated in shifting cancer cell metabolism towards mitochondrial oxidative phosphorylation, a process involved in maintenance of cancer stem cells (CSCs). Our results also demonstrate that Cav2-expressing nerves confer stemness properties to cancer cells. Disruption of Cav2 expression, both globally and in specific neural cell types, impedes tumorigenesis and progression in a 4-NQO- induced HNSCC mouse model.This interplay observed between cancer cells, neurons, and glial cells suggests a potential mechanism through which tumor-associated nerves might influence cancer stemness via metabolic reprogramming. This highlights a possible new direction for anticancer therapy that warrants further investigation.

2025-02-04 | GSE288675 | GEO

Pol II phosphorylation regulates a switch between transcriptional and splicing condensates

Project description:Pol II phosphorylation regulates a switch between transcriptional and splicing condensates

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DYRK1A regulates B cell class switch recombination through phosphorylation of MSH6

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Release of Human Cytomegalovirus from latency by a KAP1/TRIM28 phosphorylation switch

Project description:A new actor of HCMV latency is unveiled, where KAP1 protein binds to viral genome to recruit SetDB1 and trigger H3K9 trimethylation. A switch of phosphorylation state mediated by mTOR leads to lytic replication, opening new approaches to curtail CMV infection but also to purge the virus from organ transplants.

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Ascl2 acts as an R-spondin/Wnt responsive switch to control stemness in intestinal crypts [ChIP-seq]

Project description:Wnt signals control three functions of intestinal crypts: maintenance of Lgr5 stem cells, proliferation of transit-amplifying daughters and formation of Paneth cells. Here, we study how the Wnt effector Î²-catenin/Tcf4 cooperates with the Wnt-activated transcription factor Ascl2 to control a stem cell transcription program. DNA elements that are co-occupied and synergistically regulated by Ascl2 and Tcf4 specifically map to stem cell genes. In vitro, Tcf4-/- mini-guts are rescued by Ascl2 expression, while Ascl2-/- organoids are rescued by Wnt signaling. A direct auto-activatory loop leads to an on/off expression pattern of Ascl2 with a threshold that depends on the previous state. Wnt/R-spondin1 activates this loop. This mechanism interprets Wnt levels in crypts and translates this continuous signal into a discrete Ascl2 âonâ or âoffâ decision. In turn Ascl2, together with Î²-catenin/Tcf, activates stem cell genes. Thus, Ascl2 forms a transcriptional 'stemness switch' that is both Wnt-responsive and Wnt-dependent Examination of Tcf4, B-catenin and Ascl2 DNA occupancy in murine intestinal organoids and human colorectal cancer cell lines *** Original raw files unavailable due to loss during backup ***

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RNA-seq analysis lncRNA and mRNA between crushed sciatic nerves and intact contralateral nerves

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DNA-PKcs phosphorylation at the T2609 cluster alters the repair pathway choice during immunoglobulin class switch recombination

Project description:The DNA-dependent protein kinase (DNA-PK), which is composed of the KU heterodimer and the large catalytic subunit (DNA-PKcs), is a classical non-homologous end-joining (cNHEJ) factor. Naïve B cells undergo class switch recombination (CSR) to generate antibodies with different isotypes by joining two DNA double-strand breaks at different switching regions via the cNHEJ pathway. DNA-PK and the cNHEJ pathway play important roles in the DNA repair phase of CSR. To initiate cNHEJ, KU binds to DNA ends and recruits and activates DNA-PK. Activated DNA-PK phosphorylates DNA-PKcs at the S2056 and T2609 clusters. Loss of T2609 cluster phosphorylation increases radiation sensitivity but whether T2609 phosphorylation has a role in physiological DNA repair remains elusive. Using the DNA-PKcs5A mouse model carrying alanine substitutions at the T2609 cluster, here we show that loss of T2609 phosphorylation of DNA-PKcs does not affect the CSR efficiency. Yet, the CSR junctions recovered from DNA-PKcs5A/5A B cells reveal increased chromosomal translocations, extensive use of distal switch regions (consistent with end-resection), and preferential usage of micro-homology – all signs of the alternative end-joining pathway. Thus, these results uncover a role of DNA-PKcs T2609 phosphorylation in promoting cNHEJ repair pathway choice during CSR.

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