کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8807453 | 1606631 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ analysis of mTORC1/2 and cellular metabolism-related proteins in human Lymphangioleiomyomatosis
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کلمات کلیدی
Acss2TSC2GAPDHmTORCpt1amTOR complex 2GLSHMB-45BSMGLUT1mTORC2Mct1atpBmTORC1mTOR complex 1 - mTOR پیچیده 1smooth muscle actin - آکنه عضله صافImmunohistochemistry - ایمونوهیستوشیمیSMA - دبیرستانRictor - ریکتورbronchial smooth muscle - عضله صاف برونشLAM - لامLymphangioleiomyomatosis - لنفنگیلیمیومیتوزیسCellular metabolism - متابولیسم سلولیmonocarboxylate transporter 1 - مونوکربوکیلات 1mammalian target of rapamycin - هدف پستانداران رپامایسینcarnitine palmitoyltransferase 1a - کارنتین پالمیتیل ترانسفراز 1aGlutaminase - گلوتامینازglucose transporter 1 - گلوکز 1glyceraldehyde 3-phosphate dehydrogenase - گلیسرولیدید 3-فسفات دهیدروژنازEstrogen receptor - گیرنده استروژن
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
آسیبشناسی و فناوری پزشکی
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چکیده انگلیسی
Lymphangioleiomyomatosis (LAM) is a rare progressive cystic lung disease with features of a low-grade neoplasm. It is primarily caused by mutations in TSC1 or TSC2 genes. Sirolimus, an inhibitor of mTOR complex 1 (mTORC1), slows down disease progression in some, but not all patients. Hitherto, other potential therapeutic targets such as mTOR complex 2 (mTORC2) and various metabolic pathways have not been investigated in human LAM tissues. The aim of this study was to assess activities of mTORC1, mTORC2 and various metabolic pathways in human LAM tissues through analysis of protein expression. Immunohistochemical analysis of p-S6 (mTORC1 downstream protein), Rictor (mTORC2 scaffold protein) as well as GLUT1, GAPDH, ATPB, GLS, MCT1, ACSS2 and CPT1A (metabolic pathway markers) were performed on lung tissue from 11 patients with sporadic LAM. Immunoreactivity was assessed in LAM cells with bronchial smooth muscle cells as controls. Expression of p-S6, Rictor, GAPDH, GLS, MCT1, ACSS2 and CPT1A was significantly higher in LAM cells than in bronchial smooth muscle cells (Pâ¯<â¯.01). No significant differences were found between LAM cells and normal bronchial smooth muscle cells in GLUT1 and ATPB expression. The results are uniquely derived from human tissue and indicate that, in addition to mTORC1, mTORC2 may also play an important role in the pathobiology of LAM. Furthermore, glutaminolysis, acetate utilization and fatty acid β-oxidation appear to be the preferred bioenergetic pathways in LAM cells. mTORC2 and these preferred bioenergetic pathways appear worthy of further study as they may represent possible therapeutic targets in the treatment of LAM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Human Pathology - Volume 79, September 2018, Pages 199-207
Journal: Human Pathology - Volume 79, September 2018, Pages 199-207
نویسندگان
Ildiko MD, Anna MSc, PhD, Judit MD, PhD, Andras MD, PhD, DSc, Zoltan PharmD, Charles D. MDFCCP, Cesar A. MD, Andras MD, PhD,