Immunological and biochemical characterizations of coxsackievirus A6 and A10 viral particles

Chia Chyi Liu, Meng Shin Guo, Shang Rung Wu, Hsiao Yu Lin, Ya Ting Yang, Wei Chih Liu, Yen Hung Chow, Dar Bin Shieh, Jen Ren Wang, Pele Chong

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Childhood exanthema caused by different serotypes of coxsackievirus (CV-A) and enterovirus A71 (EV-A71) has become a serious global health problem; it is commonly known as hand, foot, and mouth disease (HFMD). Current EV-A71 vaccine clinical trials have demonstrated that human antibody responses generated by EV-A71 vaccinations do not cross-neutralize coxsackievirus A16 (CV-A16). An effective multivalent HFMD vaccine is urgently needed. From molecular epidemiological studies in Southeast Asia, CV-A6 and CV-A10 are commonly found in HFMD outbreaks. In this study, CV-A6 and CV-A10 were individually cultured in rhabdomyosarcoma (RD) cells grown in medium containing serum, harvested and concentrated. In viral downstream purification, two viral fractions were separated by sucrose gradient zonal ultracentrifugation and detected using a SDS-PAGE analysis and a virus infectivity assay. These two viral fractions were formalin-inactivated, and only the infectious particle fraction was found to be capable of inducing CV-A serotype-specific neutralizing antibody responses in animal immunogenicity studies. These mouse and rabbit antisera also failed to cross-neutralize EV-A71 and CV-A16 infections. Only a combination of formalin-inactivated EV-A71, CV-A6, CV-A10 and CV-A16 multivalent vaccine candidates elicited cross-neutralizing antibody responses in both mouse and rabbit immunogenicity studies. The current results certainly provide important information for multivalent HFMD vaccine development.

Original languageEnglish
Pages (from-to)58-66
Number of pages9
JournalAntiviral Research
Publication statusPublished - 2016 May 1

All Science Journal Classification (ASJC) codes

  • Pharmacology
  • Virology


Dive into the research topics of 'Immunological and biochemical characterizations of coxsackievirus A6 and A10 viral particles'. Together they form a unique fingerprint.

Cite this