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Key Assay Development at HUPO

Proteome Sciences presented novel data and key assay developments at the HUPO 12th Annual World Congress in Japan covering Tau in Alzheimer’s disease, SysQuant® in pancreatic cancer and a missing isoform in sugar structures of clusterin, a plasma protein biomarker for Alzheimer’s in brain atrophy.

pTau

The new Tau phosphorylation assay (pTau SRM) demonstrated powerful sensitivity and reproductivity measuring Tau phosphorylation on human and mouse models of Alzheimer’s disease from a much smaller sample amount.

In a different application the pTau SRM was successfully used to determine the effect of Tau kinase inhibitors PS110 and PS278-05 on CK1d on the Tau protein in a mouse model of Alzheimer’s. The results confirmed that Tau phosphorylation was reduced by the two compounds but not affected by the control substance.

SysQuant®

Over 5,000 different phosphorylation sites were quantified in tumour and healthy tissue in pancreas cancer with SysQuant®. In addition to major alterations in proteins related to cell morphology and motility, individual patterns of pathway activation were able to accurately predict the likelihood of tumour recurrence and to provide a truly personalised treatment regime.

Glycopreotomics

Novel data was presented that showed diagnostic changes in sugar structures attached to clusterin, a plasma marker for Alzheimer’s in brain atrophy. This revealed a unique isoform that lacked a specific branching pattern in patients with high levels of brain atrophy.

Commenting from Yokohama, Dr. Ian Pike, Chief Operating Officer, said: 

“We were delighted to be invited to the 12th HUPO congress to show results from the powerful biomarker services platform that we have developed from our TMT® mass tags for customers where we are at the forefront in proteomics. New assays for pTau and clusterin glycoprotein provide important additions to the range of assays and services that we offer our customers in Alzheimer’s The added power delivered by SysQuant® identifies thousands of phosphorylation sites across key signalling pathways that give clinicians the ability for the first time to provide real time patient management, in this case in pancreas cancer. These are exciting developments from proteomics that are fundamentally changing how clinicians identify and manage disease.”

Source: Proteome Sciences

Clusterin Not a Potential Early Biomarker for Alzheimer’s Disease Development

According to a recent study published in the Journal of the American Medical Association, plasma clusterin levels are significantly associated with prevalence and severity of Alzheimer’s disease (AD), but not with incidence.

ART-funded Researchers Find Biomarker Associated with Alzheimer’s

Research led by the Institute of Psychiatry (IoP) King’s College London (KCL) and part-funded by the Alzheimer’s Research Trust has found that certain protein levels in blood could be an early marker of Alzheimer’s.

The international team of scientists also found that higher levels of the protein, called clusterin, were related to more severe and rapid memory loss and greater brain shrinkage. Their findings could lead to development of a blood test to help identify who would benefit from early treatment for Alzheimer’s and also whether treatments were working to delay or prevent brain damage.

New Multiplex Panels from Aushon BioSystems Help Measure Urinary Biomarkers of Kidney Damage during Drug Development

Aushon BioSystems, Inc., a leading provider of advanced microarray instrumentation and laboratory services for biomarker discovery, development and analysis, has launched new Human multiplex biomarker panels for the quantification of eight biomarkers related to drug-induced kidney damage, or nephrotoxicity. Recent studies identifying biomarkers for kidney injury during pre-clinical testing for certain drugs helped initiate the development of the new panels. Requiring minimal sample volume, the new multiplex biomarker panels address the need for a more rapid, sensitive and accurate method to identify and quantify renal toxicity biomarkers to assist in determining risk.