July 2019
Volume 60, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2019
Factors influencing the health and longevity of donor corneal endothelial cells
Author Affiliations & Notes
  • Munetoyo Toda
    Frontier Medical Science and Technology for Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Koji Kitazawa
    Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Morio Ueno
    Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Yuko Maruyama
    Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Asako Uehara
    Frontier Medical Science and Technology for Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Chie Sotozono
    Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Junji Hamuro
    Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Shigeru Kinoshita
    Frontier Medical Science and Technology for Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  • Footnotes
    Commercial Relationships   Munetoyo Toda, None; Koji Kitazawa, None; Morio Ueno, Oncolys BioPharma Inc. (P), Santen Pharmaceutical Co., Ltd (P), Senjyu Pharmaceutical Co., Ltd (P); Yuko Maruyama, None; Asako Uehara, None; Chie Sotozono, Alcon Co., Ltd. (F), Alcon Co., Ltd. (R), AMO Japan K.K. (F), HOYA Corporation (F), HOYA Corporation (R), Nitto Medic Co., Ltd. (F), Nitto Medic Co., Ltd. (R), Otsuka Pharmaceutical Co., Ltd. (F), Pfizer Inc. (F), Pfizer Inc. (R), Santen Pharmaceutical Co., Ltd. (F), Santen Pharmaceutical Co., Ltd. (R), Senju Pharmaceutical Co., Ltd. (F), Senju Pharmaceutical Co., Ltd. (R); Junji Hamuro, Oncolys BioPharma Inc. (P); Shigeru Kinoshita, HOYA Corporation (F), HOYA Corporation (P), KOWA Company, Ltd. (F), KOWA Company, Ltd. (P), Santen Pharmaceutical Co, Ltd. (F), Santen Pharmaceutical Co, Ltd. (P), Senjyu Pharmaceutical Co. Ltd. (F), Senjyu Pharmaceutical Co. Ltd. (P)
  • Footnotes
    Support  JSPS KAKENHI Grant JP17K11461
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 3819. doi:https://doi.org/
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    • Get Citation

      Munetoyo Toda, Koji Kitazawa, Morio Ueno, Yuko Maruyama, Asako Uehara, Chie Sotozono, Junji Hamuro, Shigeru Kinoshita; Factors influencing the health and longevity of donor corneal endothelial cells. Invest. Ophthalmol. Vis. Sci. 2019;60(9):3819. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Although a decrease of corneal endothelial cell (CEC) density is usually observed after corneal transplantation, a high CEC density is retained in some cases, even after 5-years postoperative. Similarly, although the density of cultured human CECs (HCECs) is known to decrease due to passaging, the CECs from some donor eyes reveal a high CEC density even at passage 5 (P5). Thus, the purpose of this present study was to evaluate which donor-associated biological factors specifically correlate with the healthiness and longevity of cultured HCECs.

Methods : HCECs were isolated from the corneal tissue of residual cornea rims post transplantation of the donor corneal graft, and then cultured according to the published protocol. The isolated HCECs were then passaged at a density of 800 cells/mm2 to P5, unless the cells could not be passaged due to low CEC density at confluence. CEC density at confluence and the content of matured CECs (CD166+CD44neg~low) (mCEC-ratio) were analyzed at every passage, and the subsequent data was then used to evaluate the correlation with donor age, CEC density, and death-to-preservation time.

Results : The CECs obtained from 30 of 112 donor eyes were successfully cultured at P5. Nine cases exhibited no, or less, loss of CEC density and had over 2,000 cells/mm2 at P5. Although these findings appear to be similar to the frequency and percentage of CEC density loss post corneal transplantation, none of the donor-tissue factors listed above correlated with the density of the cultured HCECs and the mCEC-ratio.

Conclusions : Although extensive statistical methods need to be further examined, the findings in this study suggest that the healthiness and longevity of cultured HCECs is controlled by biological factors that are currently unknown.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.

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