Breast tissue regeneration is driven by cell-matrix interactions that coordinate multi-lineage stem cell differentiation through DDR1
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA681318 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13161310_1.fastq.gz | Fastqsanger.gz | |||
| SRR13161310_2.fastq.gz | Fastqsanger.gz | |||
| SRR13161311_1.fastq.gz | Fastqsanger.gz | |||
| SRR13161311_2.fastq.gz | Fastqsanger.gz | |||
| SRR13161312_1.fastq.gz | Fastqsanger.gz |
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Project description:Mammary morphogenesis is an orchestrated process involving differentiation, proliferation and organization of cells to form a bi-layered epithelial network of ducts and lobules embedded in storm tissue. We have engineered a 3D biomimetic human breast that makes it possible to study how stem cell fate decisions translate to tissue-level structure and functions. Using this advancement, we describe the mechanism by which breast epithelial cells build a complex three-dimensional, multi-lineage tissue by signaling through the collagen receptor DDR1. DDR1 induces stem cells to differentiate into basal cells, which in turn stimulate luminal progenitor cells to differentiate and form lobules via Notch signaling. These findings demonstrate how human breast tissue regeneration is triggered by transmission of signals from the extracellular matrix through an epithelial bilayer to coordinate structural changes that form a complex ductal-lobular network. More broadly, these findings suggest that DDR1 may coordinate collagen and Notch signaling to regulate multi-lineage differentiation and morphogenesis across diverse tissues.
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Project description:The human breast is complex and comprised of multi-lineage and multi-structural elements. Recent work has shown that epithelial stem and progenitor cells use the collagen receptor Discoidin Domain Receptor 1 (DDR1) for differentiation into both basal and luminal cell lineages, which together are necessary for complex ductal-lobular morphogenesis. We developed a next-generation single cell derived organoid model that generates miniaturized breast tissue, to study how single stem cells can give rise to multiple cell types and compound tissue structures. We show that DDR1 activation triggers stem cell differentiation via RUNX1, in turn driving multilineage differentiation as well as complex ductal-lobular development. Mechanistically, DDR1 affects the interaction and expression of RUNX1 and its cofactor CBFβ, thereby regulating its activity. Together, these findings contribute to the current understanding of how the extracellular matrix component within the stem cell niche drives organogenesis and tissue regeneration.
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Project description:Examination of effect of stable DDR1 knockdown by shRNA on transcriptional profile in BXPC3 cell line to understand role of DDR1 in tumorigenesis. Transcriptional profiles of parental BXPC3 cell line was compared to BXPC3 cells stably transfected with non-target shRNA or DDR1 shRNA, N=3 for each condition.
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Project description:Examination of effect of stable DDR1 knockdown by shRNA on transcriptional profile in BXPC3 cell line to understand role of DDR1 in tumorigenesis.
2014-05-01 | GSE39207 | GEO
Project description:Pancreatic ductal adenocarcinoma (PDAC) is a highly desmoplastic, aggressive cancer, frequently progressing and spreading by liver metastasis. Cancer-associated fibroblasts (CAF), extracellular matrix (ECM), and type I collagen (Col I) support or restrain PDAC progression and may impede blood supply and nutrient availability. The dichotomous role of the stroma in PDAC, and the mechanisms through which it influences patient survival and enables desmoplastic cancers to escape nutrient limitation remain poorly understood. Here we show that matrix metalloprotease (MMP)-cleaved or intact Col I (cCol I and iCol I, respectively) exert opposing effects on PDAC bioenergetics, macropinocytosis (MP), tumor growth and metastasis. While cCol I activates DDR1 (discoidin domain receptor-1)-NF-kB-p62-NRF2 signaling to promote PDAC growth, iCol I triggers DDR1 degradation and restrains PDAC growth. Patients whose tumors are iCol I enriched and DDR1 and NRF2 low have improved median survival compared to those with high cCol I, DDR1 and NRF2. Inhibition of DDR1-stimulated NF-kB or mitochondrial biogenesis blocked tumorigenesis in wildtype mice but not in mice expressing MMP-resistant Col I. The diverse effects of the tumor stroma on PDAC growth, metastasis, and patient survival are mediated through the Col I-DDR1-NF-kB-NRF2-mitochondrial biogenesis pathway, presenting new therapeutic opportunities.
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Project description:Discoidin domain receptor 1 (DDR1) is a collagen receptor with tyrosine kinase activity, and its expression is enhanced in various disease conditions. Although previous research suggests that DDR1 contributes to renal disease progression, DDR1 inhibitors for renal fibrosis have yet to be developed. In this study, we used unilateral ureteral obstruction (UUO) mice to investigate whether CH6824025, a strong and selective DDR1 phosphorylation inhibitor, can improve renal fibrosis. Furthermore, to analyze its action in detail, we performed 10x Visium spatial transcriptomics (ST) analysis on the kidney. Orally administered CH6824025 suppressed the phosphorylation of DDR1 in renal tissue, and the amount of hydroxyproline, the Sirius red-positive area, and the mRNA expression of fibrosis and inflammation-related genes in the kidney were significantly decreased. 10x Visium ST analysis suggested that DDR1 is mainly expressed in distal nephrons under normal conditions, but that its expression appears to increase in the injured proximal tubules in UUO mice. Comparing mRNA expression in DDR1 positive spots in the vehicle and the CH6824025 administration group, oxidative phosphorylation and mitochondrial dysfunction were improved, and pathways involved in fibrosis inhibited in the CH6824025 administration group. Downstream analysis suggested that mRNA expression changes in the CH6824025 administration group contribute to the inhibition of cell movement. Taken together, our findings suggest that CH6824025 inhibited the migration of inflammatory cells to the injury site in UUO mice, reduced inflammation, and brought about the maintenance of cell homeostasis and inhibition of fibrosis. DDR1 inhibitors are expected to be a promising treatment for renal fibrosis.
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Project description:Discoidin domain-containing receptor 1 (DDR1) plays an important role in cancer progression. However, the DDR1 function in tumors is still elusive. We recently reported that DDR1 promoted collagen fiber alignment and formation of a physical barrier, which causes immune exclusion from tumors. We also demonstrated that our DDR1 ECD-targeting mAbs can disrupt collagen fiber alignment and increase T Cell infiltration in tumors. In this study, we humanized a DDR1 ECD-targeting mAb and showed significant antitumor efficacy in an immunocompetent mouse model. We determined the binding epitope using gene mutagenesis, hydrogen-deuterium exchange mass spectrometry (HDX-MS), and X-ray crystallography. Mechanistically, we showed that the humanized mAb inhibited DDR1 phosphorylation and, more importantly, blocked DDR1 shedding and disrupted a physical barrier formed by collagen fiber alignment in tumors. This study not only paves a pathway for development of PRTH-101 as a cancer therapeutic, but also broaden our understanding of the roles of DDR1 in modulation of collagen alignments in tumor extracellular matrix and tumor immune microenvironment.
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Project description:The clinical management of metastatic colorectal cancer (mCRC) faces major challenges. For instance, patients harbouring oncogenic mutations in RAS signalling do not respond to anti-EGFR targeted treatment. Therefore, RAS-independent therapies are needed. Interestingly nilotinib, a clinically approved drug for chronic myeloid leukaemia, inhibits human CRC cell invasion in vitro and reduces their metastatic potential in intrasplenic tumour mouse models. Nilotinib acts by inhibiting the kinase activity of DDR1, a receptor tyrosine kinase for collagens, which we identified as a RAS-independent inducer of CRC metastasis. Using quantitative phosphoproteomics, we identified BCR as a new DDR1 substrate and demonstrated that nilotinib prevents DDR1-mediated BCR phosphorylation on Tyr177, which is important for maintaining -catenin transcriptional activity necessary for tumour cell invasion. DDR1 kinase inhibition also reduced the invasion of patient-derived metastatic and circulating CRC cell lines.
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