Regulation of protein secretion through controlled aggregation in the endoplasmic reticulum - PubMed (original) (raw)

. 2000 Feb 4;287(5454):826-30.

doi: 10.1126/science.287.5454.826.

X Wang, S Wardwell, N L Courage, A Volchuk, T Keenan, D A Holt, M Gilman, L Orci, F Cerasoli Jr, J E Rothman, T Clackson

Affiliations

Regulation of protein secretion through controlled aggregation in the endoplasmic reticulum

V M Rivera et al. Science. 2000.

Abstract

A system for direct pharmacologic control of protein secretion was developed to allow rapid and pulsatile delivery of therapeutic proteins. A protein was engineered so that it accumulated as aggregates in the endoplasmic reticulum. Secretion was then stimulated by a synthetic small-molecule drug that induces protein disaggregation. Rapid and transient secretion of growth hormone and insulin was achieved in vitro and in vivo. A regulated pulse of insulin secretion resulted in a transient correction of serum glucose concentrations in a mouse model of hyperglycemia. This approach may make gene therapy a viable method for delivery of polypeptides that require rapid and regulated delivery.

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