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Increased Mucin Expression in Oral Mucosal Epithelial Cells in vitro: A Potential New Role of Mycophenolate Mofetil
Sandeep Agrawal, Aditi Bhattacharya, Janvie Manhas
1Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi-110029, India: sudipsen99@rediffmail.com.
Objective:
Autologous cultured explants of human oral mucosal epithelial cells (OMEC) are a potential therapeutic modality in patients of bilateral ocular surface disease (OSD) with incapacitating dry eye. Mycophenolate mofetil (MMF) has been found to upregulate the mucin production in conjunctival goblet cells in vitro. The aim of this study was to evaluate the effects of MMF on mucin expression in primary cultures of OMEC.
Methods:
With informed consent, oral mucosal epithelial tissue samples were obtained from patients undergoing oral surgery for non-malignant conditions. OMEC were cultured on human amniotic membrane (HAM) scaffold for 2 weeks. Mucin expression was quantified using RT-PCR and qPCR before and after treating cultured OMEC with MMF.
Results:
Morphological studies revealed a confluent sheet of proliferating, stratified oral mucosal epithelial cells. Mucin mRNAs were elucidated by RT-PCR. Compared to untreated controls, MUC1, MUC15 and MUC16 mRNAs and MUC1 protein expression were found to be upregulated in MMF treated primary cultures of OMEC, as assessed by qPCR and immunocytochemistry respectively.
Conclusion:
Our findings demonstrate that MMF can act as a novel enhancer of mucin production in OMEC in vitro. It has the potential to improve dry eye in patients undergoing OMEC transplantation for bilateral OSD.
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