Production of a chimeric porcine reproductive and respiratory syndrome virus (PRRSV)-2 vaccine using a lab-scale packed-bed bioreactor CelCradle

© 2023. The Author(s)..

BACKGROUND: We developed a MARC-145 cell culture and porcine reproductive and respiratory syndrome (PRRS) vaccine production using a novel CelCradle bioreactor. CelCradle is a packed-bed bioreactor capable of both batch and perfusion culture, and the operating parameters are easy to optimize.

RESULTS: In this study, CelCradle reached a maximum cell density of 8.94 × 105 cells/mL at 5 days post-seeding when seeded at 8.60 × 104 cells/mL (doubling time = 35.52 h). Inoculation of PRRS vaccine candidate, K418DM1.1, was performed at a multiplicity of infection (MOI) of 0.01 at 5 days post-seeding, which resulted in a high viral titer of 2.04 × 108 TCID50/mL and total viral load of 1.02 × 1011 TCID50/500 mL at 2 days post-infection (dpi). The multilayer cultivation system, BioFactory culture, yielded a higher doubling time (37.14 h) and lower viral titer (i.e., 8.15 × 107 TCID50/mL) compared to the CelCradle culture. Thus, the culture medium productivity of the CelCradle culture was 2-fold higher than that of the BioFactory culture. In the animal experiment, the CelCradle-produced vaccine induced high levels of neutralizing antibodies and effectively protected pigs against homologous challenge, as shown by the significantly lower levels of viremia at 1- and 7-days post-challenge (dpc) compared to the non-vaccinated pigs.

CONCLUSIONS: Overall, this study demonstrates that the CelCradle system is an economical platform for PRRS vaccine production.

Errataetall:

ErratumIn: BMC Vet Res. 2023 Aug 9;19(1):115. - PMID 37559121

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

BMC veterinary research - 19(2023), 1 vom: 02. Aug., Seite 105

Sprache:

Englisch

Beteiligte Personen:

Choi, Hwi-Yeon [VerfasserIn]
Choi, Jong-Chul [VerfasserIn]
Kang, Yeong-Lim [VerfasserIn]
Ahn, So-Hyeun [VerfasserIn]
Lee, Sang-Won [VerfasserIn]
Park, Seung-Yong [VerfasserIn]
Song, Chang-Seon [VerfasserIn]
Choi, In-Soo [VerfasserIn]
Lee, Joong-Bok [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, Viral
Bioreactor
CelCradle
Journal Article
Packed Bed
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV)
Vaccine efficacy
Vaccine production
Vaccines, Attenuated
Viral Vaccines

Anmerkungen:

Date Completed 03.08.2023

Date Revised 23.11.2023

published: Electronic

ErratumIn: BMC Vet Res. 2023 Aug 9;19(1):115. - PMID 37559121

Citation Status MEDLINE

doi:

10.1186/s12917-023-03659-4

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM360281648