Studies on Insulin Biosynthesis

نویسندگان

  • G. Eric Bauer
  • Arnold W. Lindall
  • Padmaker K. Dixit
  • Gordon Lester
  • Arnold Lazarow
چکیده

Islet tissue from the goosefish (Lophius piscatorius) was incubated in the presence of leucine-H(3). The tissue was then separated into subcellular fractions and the radioactivity determined in total acid alcohol-soluble proteins, insoluble proteins, and insulin. At any time, microsomal protein had a higher activity than secretion granule protein. Pulse-chase experiments further suggest the microsomes as primary sites of protein synthesis. The data are evidence for microsomal synthesis of insulin and for its subsequent transfer into the secretion granules.

برای دانلود رایگان 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

The effect of sugars on (pro)insulin biosynthesis.

Rates of incorporation of [4,5-(3)H]leucine into insulin plus proinsulin, designated ;(pro)insulin', and total protein in rat pancreatic islets were measured. Glucose stimulates rates of total protein and (pro)insulin biosynthesis, but (pro)insulin biosynthesis is stimulated preferentially. Mannose and N-acetylglucosamine also stimulate (pro)insulin and total protein biosynthesis; inosine and d...

متن کامل

Therapeutic potential of SIRT1 and NAMPT-mediated NAD biosynthesis in type 2 diabetes.

Both genetic and environmental factors contribute to the pathogenesis of type 2 diabetes, and it is critical to understand the interplay between these factors in the regulation of insulin secretion and insulin sensitivity to develop effective therapeutic interventions for type 2 diabetes. For the past several years, studies on the mammalian NAD-dependent protein deacetylase SIRT1 and systemic N...

متن کامل

Insulin receptor biosynthesis in cultured lymphocytes from insulin-resistant patients.

In some patients with genetic forms of extreme insulin resistance, the cause of insulin resistance is a marked (greater than or equal to 90%) reduction in the number of insulin receptors on the cell surface. In the present work, we describe studies of insulin receptor biosynthesis in Epstein-Barr virus (EBV)-transformed lymphocytes from three patients (A-1, A-5, and A-8) with type A extreme ins...

متن کامل

Simvastatin may induce insulin resistance through a novel fatty acid mediated cholesterol independent mechanism

Statins are a class of oral drugs that are widely used for treatment of hypercholesterolemia. Recent clinical data suggest that chronic use of these drugs increases the frequency of new onset diabetes. Studies to define the risks of statin-induced diabetes and its underlying mechanisms are clearly necessary. We explored the possible mechanism of statin induced insulin resistance using a well-es...

متن کامل

Biosynthesis Characteristic of Silver ‎Nanoparticles Produced by Mine Soil ‎Bacteria Isolation, Kerman, Iran

   Background: Biosynthesis of is one of the safe methods in nanoparticles (NP) production where local bacteria of every region can be applied for its better functionality. Among these nanoparticles, the silver nanoparticles (SNP) with high applicability due to their antimicrobial characteristic are the most common.    Methods: In the study, the soil samples are collected from met...

متن کامل

Acute and chronic regulation of leptin synthesis, storage, and secretion by insulin and dexamethasone in human adipose tissue.

Serum leptin levels are upregulated in proportion to body fat and also increase over the short term in response to meals or insulin. To understand the mechanisms involved, we assessed leptin synthesis and secretion in samples of adipose tissue from subjects with a wide range of BMI. Tissue leptin content and relative rates of leptin biosynthesis, as determined by metabolic labeling, were highly...

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

عنوان ژورنال:
  • The Journal of Cell Biology

دوره 28  شماره 

صفحات  -

تاریخ انتشار 1966