Introduction:
iTRAQ (4 plex or 8 plex) and TMT (2 plex through 16 plex) are chemical labeling methods that enable high through-put and internally controlled quantifications in proteomics studies. This is a very popular service in Complete Omics which enables researchers to directly compare the difference of proteomes in their treated vs untreated, diseased vs normal, over-expressed vs control, gene silenced vs control, knockout vs wild type, mutant vs wild type groups, etc.
Every sample group in the study is normalized to start from the equal amount of total protein/peptide. Protein digest of each sample is chemically labeled with a sample specific tag. Tagged peptides from different samples are pooled together with equal total individual amount and the complete catalogue of proteins in the pooled sample is resolved by Mass Spectrometry analysis and each protein identified in the study will contain 4 or 8 (for iTRAQ) and 2 through 16 (for TMT) intensity values representing this protein’s abundance in different samples. The result shows not only the identification of peptides/proteins, but also the absolute/relative abundance of the peptides/proteins in each sample.
Your samples (several test groups and control group) will be digested with Trypsin and peptides are chemically labeled by either iTRAQ or TMT labeling method, and the labeled peptides are pooled and ion-exchanged through Strong Cation Exchange (SCX) HPLC cleaning. To improve the sensitivity, we suggest the basic Reverse Phase LC (bRPLC) to further fractionate your cleaned sample into 96 fractions and then pooled to 24 fractions to maximize the coverage and depth of your analysis. 24 Mass Spectrometry Analysis runs will be performed by the world’s most advanced Orbitrap LC-MS/MS system.
Data analysis, including data validation, visualization and quantification, are performed with commercial softwares and Complete Omics’ unique R packages and scripts. Report will be sent to you in Excel format as well as a summary in PDF format. We will also provide you any details you need for your papers’ MATERIALS AND METHODS section. We will make sure you understand your result and help you with your paper writing with free follow-up services.
Sample types we accept:
1, 2D gel spots, SDS-PAGE bands
2, Cell Lysates and Tissue Lysates
3, Biofluids, such as plasma*, serum*, saliva, tear, etc.
*We provide High Abundance Protein Depletion Service to significantly (100-500 folds) increase the depth of your biofluid proteomics analysis by removing top abundant proteins from your samples. Read more for details.
4, FFPE slide/ FFPE extract 5, Customized sample types (please contact us to discuss)
Milestone! | Complete Omics Inc. Achieves CLIA, CAP Certification, and Medicare Enrollment
Oct 20, 2024 | BALTIMORE – Complete Omics Inc., a trailblazer in clinical proteomics and multi-omics molecular diagnostics, is proud to announce its recent achievement of CLIA and CAP certifications,…
Strategic Partnership with M20 Genomics, Advancing Single-Cell Multi-Omics for Precision Medicine
August 20, 2024 | BALTIMORE – Complete Omics is thrilled to announce an electrifying partnership with M20 Genomics, a trailblazer in single-cell and spatial transcriptomics! Together, these industry leaders are…
Exciting News | Valid-NEO® Platform Secures U.S. Patent
May 12, 2024 | BALTIMORE – Complete Omics is thrilled to announce that our Valid-NEO® platform’s “Method and System for Neoantigen Analysis” has been granted a U.S. patent after a rigorous…
Some of our impacts
2023--Closing latest financing round with QiMing Venture Partners
Complete Omics proudly announces its latest financing round's success, significantly backed by Qiming Venture Partners, China's top healthcare VC. This achievement is particularly remarkable given the current economic climate, where securing investment has become increasingly challenging, especially in the healthcare and pharmaceutical sectors. Our team's dedication and resilience have been key in reaching this pivotal moment for our company. Our collaboration with Qiming, known for investing in industry leaders like Xiaomi (1810.HK), Meituan (3690.HK), and Bilibili (BILI), signals strong confidence in our mission and future. This investment propels us into new realms of innovation in clinical proteomics and molecular diagnostics, underscoring our commitment to transforming healthcare. It positions us among influential firms, promising a future of growth and breakthroughs despite the economic slowdown. We're excited for what's ahead and invite our community to join us in this journey towards significant healthcare advancements. Together, we're poised to redefine the landscape of personalized medicine. (Ref. 1, 2).A Proud Partner of QiMing VC2022--Direct Identification and Quantification of Neoantigens from Minute Amount of Clinical Biopsy Sample --- published on Cancers
In recent years, neoantigens are becoming popular cancer therapeutic targets under intensive studies by almost all major oncology pharmaceuticals. However, who are the target patients? Does the patient with a "correct" mutation and a "correct" HLA allele indeed present the "correct" neoantigen? Is this individual's neoantigen copy number high enough for immunotherapy? AI predictions based on NGS genomic information have been proven incapable of answering these questions. Immunopeptidome through mass spectrometry is dominated by disease-irrelevant peptide sequences. There is no existing way to identify and quantify neoantigens from a minute amount of clinical biopsy sample, such as 50 mg tissue or less. Valid-NEO is developed to fit this demanding clinical need through combining our proprietary multi-omics platforms including NGS-based ultra-rare mutation calling technique, DEEPER-SeqS, and our unique clinical proteomics platform, Complete360®, with additional hardware innovations (Ref. 1).Valid-NEO: Multi-omics Pipeline for Neoantigen Assays2022--Identify and Quantify Neoantigens derived from Human endogenous retroviruses (HERVs) --- published on Science Advances
Human endogenous retroviruses (HERVs) represent 8% of the human genome. Working with, ErVaccine Technologies, our scientists identified neoantigens encoded by HERVs across a broad spectrum of cancers, and this finding may help enable next-generation therapeutic vaccines and cellular immunotherapies targeting these so-called “unconventional” tumor antigens (Ref 1). These antigens are shared by different tumor types. They would prove useful as personalized cancer therapeutic targets for a large number of patients. Along the side when we are keep on improving and developing our own disease detection and companion diagnostic pipelines, we are excited to be working with a large number of collaborators to implement our multi-omics platforms in their different clinical and basic research projects.Identify and Quantify Neoantigens derived from Human endogenous retroviruses (HERVs) — A new class of cancer therapeutic targets2021--Therapeutic Neoantigens Encoded by Oncogene K-Ras --- published on Science Immunology
K-Ras is one of the most highly mutated oncogenes in cancers. The neoantigens encoded by K-Ras can be presented by many different types of cancer cells. Here we utilized our multi-omics neoantigen validation pipeline to detect and quantify K-Ras neoantigens from a variety of cancer samples (Ref 1.). We found that the K-Ras as well as several other oncogenes can be presented on cancer cell surface, but at extremely low copy numbers. We adopted a variety of internal control system to measure their abundance down to <1 copy per cell level. To come up with an actionable strategy, the therapeutic team at JHU developed bispecific antibodies that can target the neoantigens we identified, and deliver dramatic therapeutic effects to mice. These findings are significant in the way that it opens a gate to developing pan-cancer immunotherapeutic agents that can treat a large number of patients sharing cancer hotspot mutations. Identifying such neoantigens is the first step in this campaign and is being accomplished by Complete Omics Inc.K-Ras Neoantigen Identified for Personalized Cancer Therapeutics2021--Direct Quantification of Neoantigens Like Never Before --- published on Science
Genetic changes in human genome are the driving force for all cancers. Different patients have different sets of mutation profiles even for the patients who all have the same disease. For decades, doctors, cancer researchers, and pharmaceutical companies have been working tirelessly trying to find a way to treat each person's unique disease in a highly personalized way that will reach the maximum treatment efficacy with the lowest side effects. Complete Omics, working with leaders in cancer therapeutics, has developed pipelines based on our multi-omics techniques through which we clearly observe and quantify personalized therapeutic targets encoded by the most frequently mutated tumor suppressor gene TP53. We validated and quantified the TP53 neoantigens on the surfaces of cancers and provided information to healthcare providers to support their decision on if or not to adopt a highly personalized cancer treatment targeting these neoantigens and when to use it (Ref 1). These findings provided the 1st-hand evidence for cancer therapeutics without the uncertainty that comes with predictions.Prediction-FREE Neoantigen Validation Enables TP53-targeted Personalized Cancer Therapeutics