December 2022

Technologies for Antibody Discovery and Generation

2024-05-06T11:49:48-04:00December 23rd, 2022|Articles|

The great debate on the use of in vivo versus in vitro sources and strategies for antibody discovery and generation continues to thrive among antibody research groups. On one side of the debate is the argument for non-animal-derived antibodies due to the technical advancements of current in vitro technologies, and the moral obligation to reduce animal usage. On the other side of the debate is the counterargument for animal-derived antibodies due to their better performance in affinity, specificity, and reduced immunogenicity risk.

October 2022

Characterizing Biomolecular Interactions with Surface Plasmon Resonance

2024-05-06T15:53:39-04:00October 21st, 2022|Articles|

Biological processes are driven by molecules that interact through specific molecular contacts, often to form a stable complex. These interactions are typically defined by the principles of thermodynamics as well as biomolecular structure and recognition. At the simplest level is the interaction between a target molecule with a specific binding site and a probing molecule that binds to that site, resulting in the bound complex.

August 2022

Surface Plasmon Resonance Spectroscopy

2024-05-06T15:55:26-04:00August 16th, 2022|Articles|

Written by: Vanessa Yoon Calvelo, PhD Updated: January 19, 2023 (Published: August 11, 2022) Contents What is Surface Plasmon Resonance Spectroscopy? What is SPR Used For? How Does SPR Work? SPR Experimental Workflow SPR Sensorgram SPR Advantages SPR Applications SPR Antibody-Antigen Interaction Analysis at Rapid Novor What is [...]

Moving Towards Biosimilar Drugs

2024-04-01T16:01:07-04:00August 4th, 2022|Articles|

Written by: Vanessa Yoon Calvelo, PhD Published: August 3, 2022 Contents What are Biosimilar Drugs? Why are Biosimilars Being Developed? Biosimilars are not the Equivalent of Generics Biosimilar Development Biosimilar Monoclonal Antibodies De Novo Protein Sequencing Solutions in Biosimilar Development What are Biosimilar Drugs? Biosimilar drugs, [...]

July 2022

Protein Characterization by HDX-MS

2023-06-21T11:01:38-04:00July 26th, 2022|Articles|

Characterization of proteins and protein complexes is a major keystone of structural biology. As our understanding of cellular processes continues to evolve from simple pathways to complicated networks, our need for advanced analytical methods is quite apparent. Mass spectrometry (MS)-based structural approaches can be used to study protein conformational changes and dynamics, protein motion/flexibility, ligand-protein binding, and protein-protein interfaces.

Adeno-Associated Virus Vectors for Gene Therapy Delivery

2023-06-22T10:41:47-04:00July 14th, 2022|Articles|

Written by: Vanessa Yoon Calvelo, PhD Published: July 11, 2022 Contents What is Gene Therapy? What are Adeno-Associated Viruses? Engineering of AAVs for Gene Therapy Engineering AAVs for Improved Transduction Engineering AAVs for Improved Immunogenicity De Novo Protein Sequencing Applications in AAV Characterization and Development What is Gene [...]

June 2022

Chimeric Antigen Receptors and T cells – CAR-T

2024-04-01T15:56:27-04:00June 21st, 2022|Articles|

Written by: Vanessa Yoon Calvelo, PhD Published: June 13, 2022 Contents What is CAR-T Cell Therapy? CAR Structure and Function CAR-T Cell Development Engineering Strategies for CAR-T Cells De Novo Protein Sequencing Applications in CAR-T Cell Development What is CAR-T Cell Therapy? The infusion of T cells [...]

What is Polyclonal Antibody Sequencing?

2024-05-06T12:16:55-04:00June 1st, 2022|Articles|

The most straightforward solution would be to determine sequences of the dominating antibody forms in a polyclonal mixture to enable recombinant antibody generation and ensure reproducibility. This was recently made possible by the development of polyclonal antibody sequencing technology, which will be reviewed in this article.

May 2022

What is HDX-MS Epitope Mapping?

2023-06-21T11:00:11-04:00May 15th, 2022|Articles|

The origin of hydrogen-deuterium exchange (HDX) dates back to the 1950s, when protein scientist Linderstrøm-Lang created a method involving protein deuteration to distinguish amide hydrogens participating in secondary structures. Today, scientists frequently rely on HDX data to investigate protein structure, conformational dynamics, and protein-ligand interaction.

April 2022

January 2022

Recombinant Therapeutic pAbs are Now Possible

2024-04-24T10:58:06-04:00January 20th, 2022|Webinars|

Polyclonal antibodies are popular research reagents for their high sensitivity and robust cross-platform performance. But few companies consider them viable for therapeutic applications as they are almost impossible to characterize. Additionally, they suffer from a lack of reproducibility and limited supply. Monoclonal antibodies (mAbs) can be reliably characterized and produced for therapeutic applications, but are more costly to discover and develop. Rapid Novor’s REpAb technology can overcome these limitations by capturing the sequences of the most abundant IgG in a pAb and enabling indefinite antibody production. Here we report the first successful conversion of a goat polyclonal antibody into a cocktail of recombinant mAbs using only the pAb protein sample.

Recombinant Antibodies: A New Generation Enabled by Protein Sequencing

2024-05-06T12:49:01-04:00January 19th, 2022|Articles|

Recombinant antibodies are artificially synthesized antibodies. Recombinant antibodies are generated from expression systems (e.g., E.coli, yeast, mammalian cell lines) via transfection with two separate plasmids encoding the amino acid sequences for the light and heavy chains, respectively. In order to recombinantly produce mAbs, the amino acid sequence of the light and heavy chains must be known. There are many ways to obtain the sequence of an antibody.

December 2021

Polyclonal Antibody Sequencing in Therapeutics Development Pipelines

2024-04-25T10:13:31-04:00December 20th, 2021|Webinars|

Over the past several years Rapid Novor has been developing the world's best antibody protein sequencing platform, with over 2700 monoclonal antibodies and proteins sequenced. In 2020, they unveiled their most advanced technology to date- REpAb® polyclonal antibody sequencing. The platform combines the world's best protein sequencing technology and NGS to comprehensively mine the antigen specific antibody repertoire present in rabbit and human patient samples. By leveraging the platform, teams can build robust antibody assays and therapeutic leads derived from patient's blood.

November 2021

October 2021

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

2024-04-24T10:45:13-04:00October 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.

September 2021

Why is Protein Sequencing Useful?

2024-05-06T12:53:45-04:00September 3rd, 2021|Articles|

Protein sequencing is a method that typically utilizes mass spectrometry (MS) to determine the amino acid code of a protein1. Prior to the development of mass spectrometry, Edman degradation, a method involving the stepwise degradation of peptides to derive the order of amino acids, was the mainstream approach. Nowadays, mass spectrometry is favored due to its ease of use and high throughput capabilities, though Edman degradation is still employed for specific applications in which the technique is well suited.

August 2021

How to Determine Peptide Sequences

2023-05-15T11:41:09-04:00August 17th, 2021|Articles|

Amino acids (aa)—the building blocks of proteins—are simple molecules characterized by a variable R group flanked either side by an amino group and a carboxyl group. With around 20 different commonly found amino acids, each one can bond with another to produce chains that can be classified as peptides (typically below 50 aa) and proteins (sequences above 50 aa)—molecules ubiquitous to every known organism.

Key Pain Points in Amino Acid Sequencing & How to Avoid Them

2023-05-15T11:42:16-04:00August 13th, 2021|Articles|

Amino acid sequencing is commonly performed using Edman degradation or mass spectrometry (MS). While mass spectrometry is favoured for its high throughput capabilities and ease of use, both techniques possess their own features and limitations. This article summarizes some of the key pain points inherent in the two methodologies when determining the amino acid sequence.

De Novo Protein Sequencing vs DNA Sequencing

2024-04-01T15:52:10-04:00August 1st, 2021|Articles|

DNA sequencing is the process of determining the precise order of four nucleotides bases—adenine (A), guanine (G), cytosine (C), and thymine (T)—that make up the DNA molecule. From Sanger sequencing to next-generation sequencing (NGS), DNA sequencing’s accessibility and ease of use make it one of the most widely used technologies in life sciences.

July 2021

Fully Harnessing the Power of Immunotherapy through Protein Sequencing

2024-04-24T10:59:22-04:00July 20th, 2021|Webinars|

Of interest to human and veterinary drug development scientists, biologics and biosimilars development scientists, scientists performing pre-clinical assay development, immunotherapy researchers, oncolytic therapy development scientists, gene therapy development scientists, gene therapy, and oncolytic therapy researchers, CAR-T, and CAR-NK development scientists

Isoleucine and Leucine

2023-05-15T11:51:04-04:00July 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.

May 2021

Polyclonal Antibody Sequencing with Only Proteomics

2024-04-25T10:12:57-04:00May 13th, 2021|Webinars|

Over the past 5 years Rapid Novor has perfected monoclonal antibody sequencing, and is now sequencing mAbs from polyclonal mixtures using REpAb®.  After successfully launching their proteogenomics based sequencing technology to deconvolute the immune response, the team has further evolved the technology and has derived the most abundant mAb sequences directly from rabbit blood using only proteomics. The talk will surround the development, progress and use cases for REpAb®.

April 2021

Leveraging pAbs for Therapeutic Development

2024-04-24T10:59:59-04:00April 13th, 2021|Webinars|

Over the past several years Rapid Novor has been developing the world’s best antibody protein sequencing platform, sequencing over 2700 monoclonal antibodies and proteins. In 2020, they unveiled their most advanced technology to date - REpAb® polyclonal antibody sequencing. The platform combines the world’s best protein sequencing technology and NGS to comprehensively mine the antigen-specific antibody repertoire present in rabbit and human patient samples. By leveraging the platform, teams can build robust antibody assays and therapeutic leads derived from patients’ blood.

March 2021

The Underlying Cause of Medical Diagnostic Invalidation

2024-04-24T10:53:24-04:00March 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.

Leveraging Polyclonal Antibody Sequencing to Get High Affinity Binders Against Tough Targets

2023-06-21T10:56:04-04:00March 13th, 2021|Webinars|

When it comes to polyclonal antibodies, how they are discovered can be just as important as how they are reproduced. In our talk originally presented at Antibody Engineering & Therapeutics Digital 2021, we highlighted the latest technology that’s capable of capturing the most abundant and high-affinity monoclonal antibodies directly from a poly mixture.

January 2021

October 2020

Research Insurance with De Novo Protein Sequencing

2024-04-01T15:50:35-04:00October 3rd, 2020|Webinars|

If you could have guaranteed stability, certainty, and reproducibility for your research, would you be interested? Imagine this, if you’re 2 years into your project and your freezer died along with all of your important cell lines, what would you do? This is just one of the situations covered in this webinar, along with many other solutions researchers have begun to implement to safeguard their efforts. Whether you’re looking to proceed with stability and certainty or you’re looking for an immediate solution for your current reproducibility challenges, protein sequencing may be the answer.

September 2020

May 2020

Introduction to De Novo Protein Sequencing

2023-06-21T10:54:37-04:00May 21st, 2020|Webinars|

In this on-demand webinar, our scientific sales executive Jennifer, will briefly cover the fundamentals of protein sequencing, how researchers have benefited from implementing protein sequencing into their pipelines, and discuss how Rapid Novor is able to routinely and robustly achieve 100% accuracy and 100% coverage for both monoclonal and oligoclonal antibodies.

August 2019

April 2019

February 2017

Antibody Protein Sequence Analysis Using Mass Spectrometry

2023-05-15T11:58:18-04:00February 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.