Diabetic retinopathy (DR) is one of the most common complications of diabetic microvascular disease and its pathogenesis is complicated. The PI3k/Akt signaling pathway plays an important role in the angiogenesis of DR.
To explore the molecular mechanisms of the ACO3 protein and related proteins in DR, in order to provide a scientific theoretical basis for the clinical treatment of this disease.
A DR rat model was used in this study. One group (anti-ACO3 group, n = 10) was injected with protein ACO3 antagonist; the 2nd study group (the DR group, n = 10) was injected with the same amount of normal saline; the control group (n = 10) did not undergo any procedures. We used hematoxylin and eosin (H&E) staining to observe the pathological features of the eye tissues. Immunohistochemistry was used to analyze the expression of ACO3 and AKT. Western blot was used to analyze the expression of ANGPT1, ANGPT4 and KDR; reverse transcription polymerase chain reaction (RT-PCR) was used to assess the mRNA expression of AKT, ACO3 and SMOX in the eye tissues of the rats.
In the anti-ACO3 group, the results of H&E staining showed that there was a decrease in retinal edema and no obvious abnormality in the blood vessels. The immunohistochemistry analysis of proteins proved that ACO3 and AKT were strongly expressed in the DR group. The western blot analysis of ANGPT1, ANGPT4 and KDR expression showed that in the DR group, the expression of all 3 proteins was higher than in the anti-ACO3 group, and much higher than in the control group.
The mRNA expression of AKT, ACO3 and SMOX was strong in the DR group, but decreased in the anti-ACO3 group.