Scribble is required for pregnancy-induced alveologenesis in the adult mammary gland. 2016

Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
Department of Medical Biophysics, University of Toronto, Toronto, ON, M5G 1L7, Canada.

The cell polarity protein scribble (SCRIB) is a crucial regulator of polarization, cell migration and tumorigenesis. Whereas SCRIB is known to regulate early stages of mouse mammary gland development, its function in the adult gland is not known. Using an inducible RNA interference (RNAi) mouse model for downregulating SCRIB expression, we report an unexpected role for SCRIB as a positive regulator of cell proliferation during pregnancy-associated mammary alveologenesis. SCRIB was required in the epithelial cell compartment of the mammary gland. Lack of SCRIB attenuated prolactin-induced activation of the JAK2-STAT5 signaling pathway. In addition, loss of SCRIB resulted in the downregulation of prolactin receptor (PRLR) at cell surface and its accumulation in intracellular structures that express markers of the Golgi complex and the recycling endosome. Unlike its role in virgin gland as a negative regulator cell proliferation, SCRIB is a positive regulator of mammary epithelial cell proliferation during pregnancy.

UI MeSH Term Description Entries
D008321 Mammary Glands, Animal MAMMARY GLANDS in the non-human MAMMALS. Mammae,Udder,Animal Mammary Glands,Animal Mammary Gland,Mammary Gland, Animal,Udders
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011388 Prolactin A lactogenic hormone secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). It is a polypeptide of approximately 23 kD. Besides its major action on lactation, in some species prolactin exerts effects on reproduction, maternal behavior, fat metabolism, immunomodulation and osmoregulation. Prolactin receptors are present in the mammary gland, hypothalamus, liver, ovary, testis, and prostate. Lactogenic Hormone, Pituitary,Mammotropic Hormone, Pituitary,Mammotropin,PRL (Prolactin),Hormone, Pituitary Lactogenic,Hormone, Pituitary Mammotropic,Pituitary Lactogenic Hormone,Pituitary Mammotropic Hormone
D011981 Receptors, Prolactin Labile proteins on or in prolactin-sensitive cells that bind prolactin initiating the cells' physiological response to that hormone. Mammary casein synthesis is one of the responses. The receptors are also found in placenta, liver, testes, kidneys, ovaries, and other organs and bind and respond to certain other hormones and their analogs and antagonists. This receptor is related to the growth hormone receptor. Prolactin Receptors,PRL Receptors,Prolactin Receptor,Receptors, PRL,Receptor, Prolactin
D004847 Epithelial Cells Cells that line the inner and outer surfaces of the body by forming cellular layers (EPITHELIUM) or masses. Epithelial cells lining the SKIN; the MOUTH; the NOSE; and the ANAL CANAL derive from ectoderm; those lining the RESPIRATORY SYSTEM and the DIGESTIVE SYSTEM derive from endoderm; others (CARDIOVASCULAR SYSTEM and LYMPHATIC SYSTEM) derive from mesoderm. Epithelial cells can be classified mainly by cell shape and function into squamous, glandular and transitional epithelial cells. Adenomatous Epithelial Cells,Columnar Glandular Epithelial Cells,Cuboidal Glandular Epithelial Cells,Glandular Epithelial Cells,Squamous Cells,Squamous Epithelial Cells,Transitional Epithelial Cells,Adenomatous Epithelial Cell,Cell, Adenomatous Epithelial,Cell, Epithelial,Cell, Glandular Epithelial,Cell, Squamous,Cell, Squamous Epithelial,Cell, Transitional Epithelial,Cells, Adenomatous Epithelial,Cells, Epithelial,Cells, Glandular Epithelial,Cells, Squamous,Cells, Squamous Epithelial,Cells, Transitional Epithelial,Epithelial Cell,Epithelial Cell, Adenomatous,Epithelial Cell, Glandular,Epithelial Cell, Squamous,Epithelial Cell, Transitional,Epithelial Cells, Adenomatous,Epithelial Cells, Glandular,Epithelial Cells, Squamous,Epithelial Cells, Transitional,Glandular Epithelial Cell,Squamous Cell,Squamous Epithelial Cell,Transitional Epithelial Cell
D005260 Female Females
D000375 Aging The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time. Senescence,Aging, Biological,Biological Aging
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015398 Signal Transduction The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway. Cell Signaling,Receptor-Mediated Signal Transduction,Signal Pathways,Receptor Mediated Signal Transduction,Signal Transduction Pathways,Signal Transduction Systems,Pathway, Signal,Pathway, Signal Transduction,Pathways, Signal,Pathways, Signal Transduction,Receptor-Mediated Signal Transductions,Signal Pathway,Signal Transduction Pathway,Signal Transduction System,Signal Transduction, Receptor-Mediated,Signal Transductions,Signal Transductions, Receptor-Mediated,System, Signal Transduction,Systems, Signal Transduction,Transduction, Signal,Transductions, Signal
D047908 Intracellular Signaling Peptides and Proteins Proteins and peptides that are involved in SIGNAL TRANSDUCTION within the cell. Included here are peptides and proteins that regulate the activity of TRANSCRIPTION FACTORS and cellular processes in response to signals from CELL SURFACE RECEPTORS. Intracellular signaling peptide and proteins may be part of an enzymatic signaling cascade or act through binding to and modifying the action of other signaling factors. Intracellular Signaling Peptides,Intracellular Signaling Proteins,Peptides, Intracellular Signaling,Proteins, Intracellular Signaling,Signaling Peptides, Intracellular,Signaling Proteins, Intracellular

Related Publications

Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
May 2020, Reproduction (Cambridge, England),
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
October 2021, Nature physics,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
September 1994, Proceedings of the National Academy of Sciences of the United States of America,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
December 2011, Developmental biology,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
May 2017, Histochemistry and cell biology,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
May 2010, The American journal of pathology,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
October 2005, American journal of respiratory and critical care medicine,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
December 2014, Molecular endocrinology (Baltimore, Md.),
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
December 2004, Proceedings of the National Academy of Sciences of the United States of America,
Leena Baker, and Michael BeGora, and Faith Au Yeung, and Michael E Feigin, and Avi Z Rosenberg, and Scott W Lowe, and Thomas Kislinger, and Senthil K Muthuswamy
July 2021, Cell and tissue research,
Copied contents to your clipboard!