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Emerging New Concepts of Degrader Technologies.

ABSTRACT: Traditional drug discovery focuses on identifying direct inhibitors of target proteins. This typically relies on a measurable biochemical readout and accessible binding sites whose occupancy influences the function of the target protein. These requirements preclude many disease-causing proteins from being 'druggable' targets, and these proteins are categorized as 'undruggable'. The proteolysis-targeting chimera (PROTAC) technology provides powerful tools to degrade these undruggable targets and has become a promising approach for drug discovery. However, the PROTAC technology has some limitations, and emerging new degrader technologies may greatly broaden the spectrum of targets that could be selectively degraded by harnessing a second major degradation pathway in cells. We review key emerging technologies that exploit the lysosomal degradation pathway and discuss their potential applications and limitations.

SUBMITTER: Ding Y

PROVIDER: S-EPMC7177145 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Emerging New Concepts of Degrader Technologies.

Ding Yu Y Fei Yiyan Y Lu Boxun B

Trends in pharmacological sciences 20200423 7

Traditional drug discovery focuses on identifying direct inhibitors of target proteins. This typically relies on a measurable biochemical readout and accessible binding sites whose occupancy influences the function of the target protein. These requirements preclude many disease-causing proteins from being 'druggable' targets, and these proteins are categorized as 'undruggable'. The proteolysis-targeting chimera (PROTAC) technology provides powerful tools to degrade these undruggable targets and ...[more]

PMID: 32416934

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Project description:Cerebral amyloid angiopathy (CAA) involves cerebrovascular amyloid deposition and is classified into several types according to the amyloid protein involved. Of these, sporadic amyloid β-protein (Aβ)-type CAA is most commonly found in older individuals and in patients with Alzheimer's disease (AD). Cerebrovascular Aβ deposits accompany functional and pathological changes in cerebral blood vessels (CAA-associated vasculopathies). CAA-associated vasculopathies lead to development of hemorrhagic lesions [lobar intracerebral macrohemorrhage, cortical microhemorrhage, and cortical superficial siderosis (cSS)/focal convexity subarachnoid hemorrhage (SAH)], ischemic lesions (cortical infarction and ischemic changes of the white matter), and encephalopathies that include subacute leukoencephalopathy caused by CAA-associated inflammation/angiitis. Thus, CAA is related to dementia, stroke, and encephalopathies. Recent advances in diagnostic procedures, particularly neuroimaging, have enabled us to establish a clinical diagnosis of CAA without brain biopsies. Sensitive magnetic resonance imaging (MRI) methods, such as gradient-echo T2(*) imaging and susceptibility-weighted imaging, are useful for detecting cortical microhemorrhages and cSS. Amyloid imaging with amyloid-binding positron emission tomography (PET) ligands, such as Pittsburgh Compound B, can detect CAA, although they cannot discriminate vascular from parenchymal amyloid deposits. In addition, cerebrospinal fluid markers may be useful, including levels of Aβ40 for CAA and anti-Aβ antibody for CAA-related inflammation. Moreover, cSS is closely associated with transient focal neurological episodes (TFNE). CAA-related inflammation/angiitis shares pathophysiology with amyloid-related imaging abnormalities (ARIA) induced by Aβ immunotherapies in AD patients. This article reviews CAA and CAA-related disorders with respect to their epidemiology, pathology, pathophysiology, clinical features, biomarkers, diagnosis, treatment, risk factors, and future perspectives.

Dataset Information

Emerging New Concepts of Degrader Technologies.

Publications

Emerging New Concepts of Degrader Technologies.

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