Microtubule disassembly prevents palatal fusion and alters regulation of the E-cadherin/catenin complex.

نویسندگان

  • Yukiko Kitase
  • Charles F Shuler
چکیده

During palatal fusion, the midline epithelial seam (MES) degrades to achieve mesenchymal confluence. Epithelial mesenchymal transition (EMT) is one mechanism which is active in MES degradation. TGF-β induces EMT in medial edge epithelium (MEE) by down-regulation of an epithelial marker, E-cadherin. Microtubule disassembly impaired palatal fusion leading to a multi-layered MES in the mid-region. In this study, we investigated the effect of microtubule disruption on the regulation of the E-cadherin/catenin adhesion complex. Nocodazole (NDZ) enhanced the accumulation of the adhesion complex at cell-cell contacts in MEE, while loss of the adhesion complex was observed in the control. NDZ caused aberrant regulation of the E-cadherin transcriptional repressors (Snail and Zeb) and the activator (c-MYC) through inhibition of the TGF-β/SMAD2 signaling pathway, which led to a failure in EMT. These results suggest that the microtubule cytoskeleton plays an important role in mediating TGF-β/SMAD2 signals to control E-cadherin gene expression in MEE during palatal fusion.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Microtubules Inhibit E-Cadherin Adhesive Activity by Maintaining Phosphorylated p120-Catenin in a Colon Carcinoma Cell Model

Tight regulation of cadherin-mediated intercellular adhesions is critical to both tissue morphogenesis during development and tissue homeostasis in adults. Cell surface expression of the cadherin-catenin complex is often directly correlated with the level of adhesion, however, examples exist where cadherin appears to be inactive and cells are completely non-adhesive. The state of p120-catenin p...

متن کامل

Regulation and function of the E-cadherin/catenin complex in cells of the monocyte-macrophage lineage and DCs.

E-cadherin is best characterized as adherens junction protein, which through homotypic interactions contributes to the maintenance of the epithelial barrier function. In epithelial cells, the cytoplasmic tail of E-cadherin forms a dynamic complex with catenins and regulates several intracellular signal transduction pathways, including Wnt/β-catenin, PI3K/Akt, Rho GTPase, and NF-κB signaling. Re...

متن کامل

اثر عصاره استونی دانه انار بر بیان پروتئین های β-catenin و E-cadherin در سلول‌های سرطانی PC-3

پروتئین E-cadherin یکی از اعضاء فوق خانواده پروتئین‌های E-cadherin است که بطور عمده در سطح سلول‌های بافت‌های اپیتلیال بیان می‌شود. کاهش بیان این پروتئین‌ علاوه بر تضعیف اتصالات بین سلولی، موجب بروز پدیده Epithelial-mesenchymal transition (EMT) و مهاجرت و متاستاز سلول‌های سرطانی بافت-های اپیتلیال می‌شود. در طب سنتی، از انار (Punica granatum) برای درمان بسیاری از بیماری‌ها از جمله اسهال، بیماریها...

متن کامل

Role of crocin in several cancer cell lines: An updated review

Cancer is a major public health problem worldwide. The most important considerable features of cancer cells are uncontrolled proliferation, up-regulated differentiation, and immortality. Crocin, as a bioactive compound of saffron and as a water-soluble carotenoid has radical scavenging, anti-hyperlipidemia, memory improving, and inhibition of tumor growth effects. The present review was designe...

متن کامل

DDR1/E-cadherin complex regulates the activation of DDR1 and cell spreading.

Discoidin domain receptors (DDRs) 1 and 2, collagen receptors, regulate cell adhesion and a broad range of cell behavior. Their adhesion-dependent regulation of signaling associated with adhesion proteins has not been elucidated. We report a novel mechanism: the cross talk of DDR1 and E-cadherin negatively and adhesion dependently regulated both DDR1 activity and DDR1-suppressed cell spreading....

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The International journal of developmental biology

دوره 57 1  شماره 

صفحات  -

تاریخ انتشار 2013