نتایج جستجو برای: bcl2
تعداد نتایج: 4227 فیلتر نتایج به سال:
Gene activation by translocation between an oncogene and an immunoglobulin heavy-chain gene, which leads to increased expression of the oncoprotein, is a well-known mechanism in the genesis of B-cell lymphomas. In contrast, the role of gene amplification in activation of oncogenes in non-Hodgkin's lymphomas is poorly characterized. To study the BCL2 amplification we performed comparative genomi...
Many cancers overexpress one or more of the six human pro-survival BCL2 family proteins to evade apoptosis. To determine which BCL2 protein or proteins block apoptosis in different cancers, we computationally designed three-helix bundle protein inhibitors specific for each BCL2 pro-survival protein. Following in vitro optimization, each inhibitor binds its target with high picomolar to low nano...
Disruption of the complex of BECN1 with BCL2 or BCL2L1/BCL-XL is an essential switch that turns on cellular autophagy in response to environmental stress or treatment with BH3 peptidomimetics. Recently, it has been proposed that BCL2 and BCL2L1/BCL-XL may inhibit autophagy indirectly through a mechanism dependent on the proapoptotic BCL2 family members, BAX and BAK1. Here we report that the BH3...
PPARα belongs to the peroxisome-proliferator-activated receptors (PPARs) family, which plays a critical role in inhibiting cell proliferation and tumorigenesis, while the molecular mechanism is still unclear. Here we report that PPARα serves as an E3 ubiquitin ligase to govern Bcl2 protein stability. PPARα physically bound to Bcl2 protein. In this process, PPARα/C102 was critical for PPARα bind...
We analyzed the expression of p21, bcl2, and p53 in normal and different pathologic mucosa of the human colorectum using immunohistochemistry and cold polymerase chain reaction-single strand conformation polymorphism. The topography of normal mucosa showed; bcl2 and p53 expression restricted to basal epithelial cells and p21 expressed only in superficial epithelial cells. This topographic expre...
Increasing incidence of non-Hodgkin's lymphoma have been associated repeatedly with farming occupation and particular attention focused on the role of pesticide exposure to potentially explain part of this trend. A genetic hallmark of non-Hodgkin's lymphoma is the presence of recurrent chromosomal translocations involving the immunoglobulin heavy chain gene. Of these, the t(14;18), which deregu...
The nuclear receptor small heterodimer partner SHP was shown recently to translocate to the mitochondria, interact with Bcl2, and induce apoptosis in liver cancer cells. However, the exact mitochondrial localization of SHP remains to be determined. In addition, the detailed interaction domains between SHP and Bcl2 have not been characterized. Using biochemistry and molecular biology approaches,...
Apoptotic cell death is a highly regulated process, which plays a crucial role in many biological events. The aim of the present research was to investigate the expression of the apoptosis related genes BCL2 and BAX in Hep-2 and HL60 cells. Apoptosis was induced in these cell lines during treatment with etoposide. The expression levels of BCL2 and BAX genes were measured after 6 h and 12 h of t...
سابقه و هدف: سرطان معده، چهارمین سرطان شایع و دومین عامل مرگ و میر ناشی از سرطان در جهان بوده و در استان های شمالی ایران میزان شیوع بالایی دارد. خانواده bcl2 نقش مهمی در تنظیم آپاپتوزیس داشته و تاثیر چند شکلی تک نوکلئوتیدی جایگاه c>a938- ژن bcl2 در بروز سرطان معده نشان داده شده است. هدف از این مطالعه بررسی چندشکلی جایگاه c>a938- ژن bcl2 در افراد مبتلا به سرطان معده بوده است. مواد و روش ها: در ا...
زمینه و هدف : آنتراسیکلین ها یک گروه از آنتی بیوتیک ها با منشاء میکروبی می باشند که در شیمی درمانی استفاده می شوند و کاربرد بالینی بسیار وسیعی دارند. داکسوروبیسین یا آدریامایسین یکی از قوی ترین داروهای آنتراسیکلین است که برای درمان سرطان مورد استفاده قرار می گیرد. هرچند کاردیوتوکسیسیتی وابسته به دوز ایجاد شده به وسیله این دارو استفاده از آن را محدود کرده است؛ اما مکانیسم عملکرد این دارو به طورک...
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