کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5534906 | 1551356 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Epithelial cell extrusion: Pathways and pathologies
ترجمه فارسی عنوان
اکستروژن سلولهای اپیتلیال: مسیر و پاتولوژی
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کلمات کلیدی
S1PPiezo1S1P2GEFNS2RSVAPCSTMFAKadenomatous polyposis coli - آدنوماتوز پولیپوزیس کولی یا آدنوماتوس پولیپوزیس کولای Tight junction - اتصال تنگSphingosine-1-phosphate - اسپینگسین-1-فسفاتinterferon - اینترفرونIFN - اینترفرون هاRho - روSalmonella Typhimurium - سالمونلا تیفی موریومguanine nucleotide exchange factor - فاکتور تبادل نوکلئوتید گوانینListeria monocytogenes - لیستریا مونوسیتوژنزMicrotubules - میکروتوبول، ریزلوله هاNAIP - نایپRespiratory syncytial virus - ویروس سنسیتیال تنفسیNeuronal apoptosis inhibitory protein - پروتئین مهار کننده آپوپتوز عصبیfocal adhesion kinase - کیناز چسبندگی کانونیSphingosine-1-phosphate receptor 2 - گیرنده 2 اسپینوزین 1 فسفات
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
چکیده انگلیسی
To remove dying or unwanted cells from an epithelium while preserving the barrier function of the layer, epithelia use a unique process called cell extrusion. To extrude, the cell fated to die emits the lipid Sphingosine 1 Phosphate (S1P), which binds the G-protein-coupled receptor Sphingosine 1 Phosphate receptor 2 (S1P2) in the neighboring cells that activates Rho-mediated contraction of an actomyosin ring circumferentially and basally. This contraction acts to squeeze the cell out apically while drawing together neighboring cells and preventing any gaps to the epithelial barrier. Epithelia can extrude out cells targeted to die by apoptotic stimuli to repair the barrier in the face of death or extrude live cells to promote cell death when epithelial cells become too crowded. Indeed, because epithelial cells naturally turn over by cell death and division at some of the highest rates in the body, epithelia depend on crowding-induced live cell extrusion to preserve constant cell numbers. If extrusion is defective, epithelial cells rapidly lose contact inhibition and form masses. Additionally, because epithelia act as the first line of defense in innate immunity, preservation of this barrier is critical for preventing pathogens from invading the body. Given its role in controlling constant cell numbers and maintaining barrier function, a number of different pathologies can result when extrusion is disrupted. Here, we review mechanisms and signaling pathways that control epithelial extrusion and discuss how defects in these mechanisms can lead to multiple diseases. We also discuss tactics pathogens have devised to hijack the extrusion process to infect and colonize epithelia.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Seminars in Cell & Developmental Biology - Volume 67, July 2017, Pages 132-140
Journal: Seminars in Cell & Developmental Biology - Volume 67, July 2017, Pages 132-140
نویسندگان
Swapna Aravind Gudipaty, Jody Rosenblatt,