Significant upregulation of U1 and U4 spliceosomal snRNAs by ATP nanoliposomes explains acceleration of wound healing, due to increased pre-mRNA processing to functional mRNA.

Research paper by Girish J GJ Kotwal, Michael D MD Martin, Sufan S Chien

Indexed on: 09 Apr '18Published on: 09 Apr '18Published in: Nanomedicine: Nanotechnology, Biology and Medicine


Delayed wound healing is one of the hallmarks of diabetic complications and certain autoimmune inflammatory diseases. Extensive wound healing studies in rabbits have indicated that the delivery of ATP encapsulated in unilamellar nanoliposomes causes rapid cell proliferation and fast tracks the wound healing process. In the current study, we explored the possible molecular mechanism underlying this response by comparing gene expression in cultured rabbit kidney cells treated with either ATP nanoliposomes (containing 1mgMg-ATP/ml formulation) or control nanoliposomes (containing 1 mg/ml unmetabolisable gamma-thio-ATP/ml formulation). High-quality total RNA was isolated 24h from the cells and subjected to RNA seq technology, which revealed significant overexpression of specific noncoding RNAs. The U1 spliceosomal RNA, U1 snRNA, was upregulated more than 250-fold following treatment with ATP nanoliposomes. This multifunctional U1 spliceosomal RNA may function in transcription by speeding up the critical splicing step, thereby facilitating faster processing of pre-mRNA to translatable mRNA. Copyright © 2018. Published by Elsevier Inc.