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Effect of genetic modification of extracellular matrix-related genes on B16F1 melanoma progression

ABSTRACT: Effect of genetic modification of extracellular matrix-related genes on B16F1 melanoma progression

PROVIDER: PRJNA1130440 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29665348_1.fastq.gz	Fastqsanger.gz
	SRR29665348_2.fastq.gz	Fastqsanger.gz
	SRR29665349_1.fastq.gz	Fastqsanger.gz
	SRR29665349_2.fastq.gz	Fastqsanger.gz
	SRR29665350_1.fastq.gz	Fastqsanger.gz

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Effect of genetic modification of extracellular matrix-related genes on B16F1 melanoma progression

Project description:Recent research highlighted the contribution of extracellular matrix, and particularly of ADAMTS proteases, in immune regulation. Now, our work with melanoma and mammary tumor models revealed that tumor blockade induced by the lack of Adamts1 led to an increased vascular deposition of its substrate, the basement membrane glycoprotein NIDOGEN-1 (NID1). Significantly, the overexpression of NID1 in the melanoma syngeneic model also blocked tumor progression, disclosing an overlapping phenotype with the absence of Adamts1. These tumors showed important alterations in their immune infiltrates, emphasizing an enhanced presence of antitumorigenic macrophages and a global inflammatory landscape. We corroborated in vitro that full length NID1, but not its fragments, promoted an M1-like macrophage polarization, mainly mediated by the αvβ3 integrin. Significantly, the projection of RNA-seq from our tumor models to two large human melanoma datasets allowed us to discover a new gene signature associated with good prognosis and the abundance of M1-like macrophages. These results support NID1 as a novel tumor suppressor with immunomodulatory properties, and unveil the existence of key oncological drivers in the extracellular scenario.

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Comparison of transcriptomic profile of the murine B16F1-GFP-M melanoma cells with the derived dormant B16F1-GFP-D, B16F1-GFP-DB#1, B16F1-GFP-DB#2, B16F1-GFP-DB#3 melanoma cells

Project description:Cancer patients after successful therapy contain nested in their organs and/or circulating in the systemic fluids tumor cells that remain asymptomatic for an extended period of time. They stay dormant with no apparent immediate potential to develop into a clinically manifested tumor until activated by yet not well defined mechanisms. We previously developed tumor dormancy model of murine melanoma, a cancer with a high potential of phenotype plasticity to adapt to micro-environmental changes, in which to investigate cellular quiescence and related factors as a potential mechanism of tumour dormancy. In this study, to explore molecular mechanism responsible for cellular dormancy, we performed a comparative transcriptome analysis of dormant B16F1-GFP-D and derived dormant brain metastasis (DB) with maternal B16F1-GFP-M cells.

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Expression data from control untreated mouse melanoma B16F1 cells

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Comparison of transcriptomic profile of the murine B16F1-GFP-M melanoma cells with the derived dormant B16F1-GFP-D, B16F1-GFP-DB#1, B16F1-GFP-DB#2, B16F1-GFP-DB#3 melanoma cells

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Project description:Visual processing depends on sensitive and balanced synaptic neurotransmission. Extracellular matrix proteins in the environment of cells are key modulators in synaptogenesis and synaptic plasticity. In the present study, we provide evidence that the combined loss of the four extracellular matrix components brevican, neurocan, tenascin-C and tenascin-R in quadruple knockout mice leads to severe retinal dysfunction and diminished visual motion processing in vivo. Remarkably, impaired visual motion processing was accompanied by a developmental loss of cholinergic direction-selective starburst amacrine cells. Additionally, we noted imbalance of inhibitory and excitatory synaptic signaling in the quadruple knockout retina. Collectively, the study offers novel insights into the functional importance of four key extracellular matrix proteins for retinal function, visual motion processing and synaptic signaling.

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