Japanese Journal of Ophthalmology

, Volume 55, Issue 6, pp 660–669 | Cite as

Hyaluronan production and hyaluronan synthase expression in three human conjunctiva-derived cell strains

  • Yoshiko KashiwagiEmail author
  • Koichi Nishitsuka
  • Teiko Yamamoto
  • Hiroshi Takamura
  • Hidetoshi Yamashita
Laboratory Investigation



The conjunctiva maintains the health of the ocular surface by protecting the eye from pathogen invasion, injury, and dryness. In this study, we investigated the regulation of hyaluronan (HA) synthesis by cytokines in conjunctiva-derived cells.


Cultured primary cells derived from human conjunctivas that had been removed as surgical specimens were transfected with an immortalizing gene (human papilloma virus 16 E6/E7). To compare the biological features of the primary and immortalized cells, we assessed their morphological features and gene expression patterns. We also examined the effects of inflammatory cytokines on hyaluronan synthase (HAS) expression and HA production.


Three conjunctiva-derived cell strains were established and could be passaged up to 15 times. All strains expressed β2MG and KRT13 transcripts, highly expressed in conjunctival epithelial cells. HA production and expression of the three HAS isoforms were detected in the cell strains; however, cytokine treatment had no significant effect on HA production or HAS isoform expression.


We succeeded in deriving three human cell strains from conjunctival tissue. In the conjunctiva-derived cell strains, HA production and HAS mRNA expression were stable and were not changed by either TGF-β or PDGF-BB.


Cell strain Human conjunctiva Human papilloma virus 16 E6/E7 Hyaluronan Hyaluronan synthase 



This work was supported by a grant from SENJU Pharmaceutical Co., Ltd.


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Copyright information

© Japanese Ophthalmological Society 2011

Authors and Affiliations

  • Yoshiko Kashiwagi
    • 1
    Email author
  • Koichi Nishitsuka
    • 1
  • Teiko Yamamoto
    • 1
  • Hiroshi Takamura
    • 2
  • Hidetoshi Yamashita
    • 1
  1. 1.Department of Ophthalmology and Visual Sciences, Faculty of MedicineYamagata UniversityYamagataJapan
  2. 2.Okitama Public General HospitalKawanishiJapan

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