miR-212 and miR-132 are required for epithelial stromal interactions necessary for mouse mammary gland development

Kamal Chowdhury and colleagues show that the microRNA-212/132 family is necessary for mouse mammary gland development. microRNA-212 and microRNA-132 are required in the mammary stroma, not the epithelium. MicroRNAs are small noncoding RNAs that carry out post-transcriptional regulation of the expres...

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Veröffentlicht in:Nature genetics 2010-12, Vol.42 (12), p.1101-1108
Hauptverfasser: Ucar, Ahmet, Vafaizadeh, Vida, Jarry, Hubertus, Fiedler, Jan, Klemmt, Petra A B, Thum, Thomas, Groner, Bernd, Chowdhury, Kamal
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container_end_page 1108
container_issue 12
container_start_page 1101
container_title Nature genetics
container_volume 42
creator Ucar, Ahmet
Vafaizadeh, Vida
Jarry, Hubertus
Fiedler, Jan
Klemmt, Petra A B
Thum, Thomas
Groner, Bernd
Chowdhury, Kamal
description Kamal Chowdhury and colleagues show that the microRNA-212/132 family is necessary for mouse mammary gland development. microRNA-212 and microRNA-132 are required in the mammary stroma, not the epithelium. MicroRNAs are small noncoding RNAs that carry out post-transcriptional regulation of the expression of their target genes. However, their roles in mammalian organogenesis are only beginning to be understood. Here we show that the microRNA-212/132 family (which comprises miR-212 and miR-132) is indispensable during the development of the mammary glands in mice, particulary for the regulation of the outgrowth of the epithelial ducts. Mammary transplantation experiments revealed that the function of the miR-212/132 family is required in the stroma but not in the epithelia. Both miR-212 and miR-132 are expressed exclusively in mammary stroma and directly target the matrix metalloproteinase MMP-9. In glands that lack miR-212 and miR-132, MMP-9 expression increases and accumulates around the ducts. This may interfere with collagen deposition and lead to hyperactivation of the tumor growth factor-β signaling pathway, thereby impairing ductal outgrowth. Our results identify the miR-212/132 family as one of the main regulators of the epithelial-stromal interactions that are required for proper pubertal development of the mammary gland.
doi_str_mv 10.1038/ng.709
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subjects 631/136/1660
631/208/200
631/337/384/331
631/443/494
Agriculture
Animal Genetics and Genomics
Animals
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Breast cancer
Breasts
Cancer Research
Care and treatment
Cell Communication
Collagen
Epithelial Cells - metabolism
Epithelial Cells - pathology
Female
Fundamental and applied biological sciences. Psychology
Gene Deletion
Gene Expression Regulation, Developmental
Gene Function
Genes
Genetic aspects
Genetic regulation
Genetics of eukaryotes. Biological and molecular evolution
Human Genetics
Mammary Glands, Animal - enzymology
Mammary Glands, Animal - growth & development
Mammary Glands, Animal - pathology
Matrix Metalloproteinase 9 - metabolism
Mice
MicroRNAs - genetics
MicroRNAs - metabolism
Molecular Sequence Data
Mutation - genetics
Physiological aspects
Proteins
Risk factors
Rodents
Signal Transduction
Stromal Cells - metabolism
Stromal Cells - pathology
Transforming Growth Factor beta - metabolism
title miR-212 and miR-132 are required for epithelial stromal interactions necessary for mouse mammary gland development
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