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PROCESS FOR THE PRODUCTION OF PURIFIED CAPSULAR POLYSACARIDES OF A STREPTOCOCCUS PNEUMONIAE CELL PHYSICS AND PROCESS FOR THE MANUFACTURE OF A PNEUMOCOCCAL VACCINE
专利权人:
WYETH;WYETH LLC
发明人:
James Patch,John Simpson,Justin K. Moran,Ling Chu,Mark Ruppen,Pamela Fink Charbonneau,Wei-Qiang Sun,Yonghui Yuan
申请号:
BRPI0809212
公开号:
BRPI0809212B1
申请日:
2008.03.20
申请国别(地区):
BR
年份:
2019
代理人:
摘要:
"Process for producing purified capsular polysaccharides from a streptococcus pneumoniae cell lysate and process for manufacturing a pneumococcal vaccine." An abbreviated process for producing a solution containing substantially purified capsular polysaccharides from a streptococcus pneumoniae cell lysate broth is described. ultrafiltration and diafiltration of s. clarified pneumoniae followed by adjusting the ph to less than 4.5, preferably about 3.5, precipitating at least 98% of the protein in the solution without seriously affecting the polysaccharide yield. In addition, following ultrafiltration, diafiltration and acidification at a pH of less than 4.5, activated carbon filtration precipitates at least 90% of the remainder of the protein, without seriously affecting polysaccharide yield. exemplarily, the serotypes of s. Non-limiting pneumoniae which may be purified using the abbreviated process of the invention are 1, 4, 5, 6a, 6b, 7f, 9v, 14, 18c, 19a, 19f and 23f. in one embodiment, streptococcus pneumoniae cells are lysed employing sodium deoxycholate (doc), while in another embodiment the lytic agent is a non-animal derived lytic agent such as sodium n-lauryl sarcosine (nls)."processo para produção de polissacarídeos capsulares purificados de um lisado celular de streptococcus pneumoniae e processo para a fabricação de uma vacina pneumocócica". é descrito um processo abreviado para produção de uma solução contendo polissacarídeos capsulares substancialmente purificados de um caldo de lisado celular de streptococcus pneumoniae. ultrafiltração e diafiltração do lisado de s. pneumoniae clarificado seguido por ajuste do ph para menos de 4,5, preferivelmente cerca de 3,5, precipitando pelo menos 98% da proteína na solução sem afetar seriamente o rendimento do polissacarídeo. adicionalmente, seguindose a ultrafiltração, diafiltração e acidificação a um ph de menos de 4,5, a filtração empregando carbono ativado precipita pelo menos 90% do restante da proteína, sem
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中国工程科技知识中心
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