Development of A New SEC-HPLC Method to Eliminate the Interactions of
Proteins or Peptides with Residual Silanols
Improve the Separation of Proteins, Peptides and Impurities

Abstract: the separation of biologics, pharmaceutical industry uses commercial size exclusion high performance (SEC-HPLC) columns to assess, the major peaks, aggregates and degradants present in the product.

The webinar will include developing a de novo method to eliminate the interactions of proteins or peptide with the residual silanols and improve the separation of proteins, peptides and impurities. This approach mitigates the problems associated with recovery of the monomeric and high molecular species for these biomolecule, which are retarded or bound on the column during separation.
Many conditions and additives were evaluated, high ionic strength, organic solvent and ion pairing agents. Several SEC-HPLC columns and mobile phases were evaluated for the SEC-HPLC assay of proteins and peptides to further diminish interactions with these residual silanols. Mobile phase optimization was evaluated based on plates, resolution, symmetry, recovery, RT closer to the real molecular weight  and purity and impurity recovery
Examples from peptide and antibodies are presented here with an identification of a novel ingredient in the mobile phase that reduced the interaction with full recovery of the monomeric and the aggregate species.




Originally Presented Live By:
Dr. Nellaiappan is the Director of Product Development at CuriRx, with more than 20 years of pharmaceutical industrial experience. Dr. Nellaiappan is an accomplished scientist and lecturer teaching Biochemistry at master level supervising Ph.D scholars. Madras University, Oxford University, Post Doc, Biochemistry Boston University 1994-1997.

Friends and Colleagues,

The government has classified the biopharma industry as essential during this trying time. As such, CuriRx is keeping our doors open for business.

We will continue to provide quality contract R&D services in a timely manner and do our part to contribute patient care. At CuriRx, the health and well-being of our employees, clients, and the general public are still our topmost concern and priority. Internally, we are encouraging all staff to adhere to calls for social distancing, asking that they work remotely when possible and maintain a measure of physical distance while working in the lab.

As this pandemic continues to challenge our communities, we have also implemented a number of additional safety measures around the office, including extra hand sanitizer dispensers, “deep cleaning” of all surfaces and doorknobs with heavy duty disinfectants, and encouraging video conferences even internally to discourage the gathering of too many people in one room at a time.

As always, we will continue to monitor the situation globally and adjust our behavior according to federal, state and public health guidelines.

Stay safe and healthy,

CuriRx, Inc.