Abstract
Diabetic retinopathy is one of the common microvascular complications of
diabetes, and it is the main cause of vision loss among working-age people. This
study interpreted the roles of miR-99a-5p in DR patients and human retinal
microvascular endothelial cell (hRMECs) injury induced by high glucose. The
expression of miR-99a-5p was detected in patients with NDR, NPDR, and PDR. The
indictive impacts of miR-99a-5p were tested by the ROC curve, and the link
between miR-99a-5p and clinical information was verified by the Pearson test. HG
was used to instruct cell models. The CCK-8 and transwell methods were performed
to detect the proliferative and migrated cells. The targeted relationship was
explained by luciferase activity. The content of miR-99a-5p was gradually
lessened in NPDR and PDR patients. MiR-99a-5p might differentiate DR patients
from NDR patients and PDR patients from NPDR patients. The interconnection
between miR-99a-5p and clinical factors was endorsed in all DR patients.
Overexpression of miR-99a-5p assuaged the abnormality of cell migration and
proliferation of hRMECs triggered by HG. NOX4 was a downstream signaling
component of miR-99a-5p. In conclusion, MiR-99a-5p protected hRMECs against HG
damage, and the miR-99a-5p might be a novel target for diagnosis of DR.
Key words
miR-99a-5p - diagnosis - diabetic retinopathy - NOX4