title: Enhancement of antibody production by the addition of Coenzyme-Q(10).
abstract: Recently, there has been a growing demand for therapeutic monoclonal antibodies (MAbs) on the global market. Because therapeutic MAbs are more expensive than low-molecular-weight drugs, there have been strong demands to lower their production costs. Therefore, efficient methods to minimize the cost of goods are currently active areas of research. We have screened several enhancers of specific MAb production rate (SPR) using a YB2/0 cell line and found that coenzyme-Q(10) (CoQ(10)) is a promising enhancer candidate. CoQ(10) is well known as a strong antioxidant in the respiratory chain and is used for healthcare and other applications. Because CoQ(10) is negligibly water soluble, most studies are limited by low concentrations. We added CoQ(10) to a culture medium as dispersed nanoparticles at several concentrations (Q-Media) and conducted a fed-batch culture. Although the Q-Media had no effect on cumulative viable cell density, it enhanced SPR by 29%. In addition, the Q-Media had no effect on the binding or cytotoxic activity of MAbs. Q-Media also enhanced SPR with CHO and NS0 cell lines by 30%. These observations suggest that CoQ(10) serves as a powerful aid in the production of MAbs by enhancing SPR without changing the characteristics of cell growth, or adversely affecting the quality or biological activity of MAbs.
authors.affiliation: Bioprocess Research and Development Laboratories, Kyowa Hakko Kirin Co., Ltd., 100-1 Hagiwara-machi, Takasaki-shi, Gunma, 370-0013, Japan, yoshinobu.konno@kyowa-kirin.co.jp.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Konno
authors.forename: Motoi
authors.initials: M
authors.lastname: Aoki
authors.forename: Masakazu
authors.initials: M
authors.lastname: Takagishi
authors.forename: Naoto
authors.initials: N
authors.lastname: Sakai
authors.forename: Masamichi
authors.initials: M
authors.lastname: Koike
authors.forename: Kaori
authors.initials: K
authors.lastname: Wakamatsu
authors.forename: Shinji
authors.initials: S
authors.lastname: Hosoi