About Yuning Wang

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So far Yuning Wang has created 14 blog entries.

November 2021

October 2021

What is Peptide Mapping?

2021-11-23T11:55:47-05:00October 28th, 2021|Articles|

Peptide mapping is a widely used analytical technique to verify the primary structure (amino acid sequence) and characterize the chemical modifications of a protein. It analyzes peptides generated from the digestion of an isolated protein, or a protein mixture

Ushering the New Era in Anti-Drug Antibody Assays with Next Generation Protein Sequencing

2021-11-26T12:11:41-05:00October 15th, 2021|Whitepapers|

Anti-drug antibody (ADA) assays are critical to assess the clinical efficacy and safety of a biological drug and rely on control reagents that mimic the ADA response to the biological drug being tested. These positive controls typically consist of animal-derived pooled polyclonal antibodies or human monoclonal antibody reference panels against the target protein drug.

July 2021

Isoleucine and Leucine

2021-12-14T18:09:39-05:00July 7th, 2021|Articles|

Because they share the same mass, isoleucine and leucine are known as isobaric amino acids. Conventional mass spectrometry-based proteomics cannot be easily used to distinguish between isoleucine and leucine.

June 2021

Bispecific Therapeutics Explained

2021-11-18T11:09:09-05:00June 28th, 2021|Articles|

Bispecific therapeutics are monoclonal antibodies that carry a specific antigen-binding capability on each arm. Bispecifics are thus capable of having two specificities that can either double the binding affinity of the antibody toward the same antigen (increased avidity), or can now bind to two targets. Bispecifics are most often described as two types: trispecifics and bispecific T-cell engaged antibodies (BiTE).

Types of Antibodies

2021-11-18T11:31:31-05:00June 25th, 2021|Articles|

Written by María Gerpe, PhD June 25, 2021 Introduction Antibodies or immunoglobulins (Ig) are Y-shaped glycoproteins produced by the adaptive immune system in response to antigens - substances or molecules the immune system deems as foreign. Antibodies bind to an antigen and either directly neutralize it, or activate other parts of [...]

March 2021

The Underlying Cause of Medical Diagnostic Invalidation

2021-11-23T09:41:41-05:00March 23rd, 2021|Whitepapers|

In-vitro diagnostics (IVDs) are one of the most commonly used tools to diagnose conditions and guide treatment decisions and are often considered the “silent champion” of healthcare. They work by detecting the absence or presence of particular markers or by measuring the concentration of analytes or specific substances.

February 2017

Antibody Protein Sequence Analysis Using Mass Spectrometry

2021-11-18T11:03:43-05:00February 3rd, 2017|Articles|

One of the most important pieces of information researchers need to know during early stage antibody drug research and development is the sequence information of the antibody protein. With the advancement of mass spectrometry instrumentation and technologies, it is helpful, and sometimes critical, to conduct sequence analysis using mass spectrometry experiments.