Hsa_circ_0032131 knockdown inhibits osteoarthritis progression via the miR-502-5p/PRDX3 axis

Area of Science:

• Molecular Biology
• Cell Biology
• Biochemistry

Background:

• Osteoarthritis (OA) is a degenerative joint disease involving cartilage loss.
• Circular RNAs (circRNAs) are implicated in various disease pathologies, including OA.
• Hsa_circ_0032131 is a circRNA found to be upregulated in osteoarthritis.

Purpose of the Study:

• To investigate the functional role of hsa_circ_0032131 in osteoarthritis.
• To elucidate the molecular mechanisms underlying hsa_circ_0032131's involvement in OA pathogenesis.
• To evaluate hsa_circ_0032131 as a potential therapeutic target for OA.

Main Methods:

• Utilized CHON-001 cells treated with interleukin-1 beta (IL-1β) to model OA in vitro.
• Performed gene silencing and overexpression experiments for hsa_circ_0032131 and PRDX3.
• Employed an in vivo osteoarthritis rat model to assess therapeutic effects.

Main Results:

• Silencing hsa_circ_0032131 reversed IL-1β-induced inhibition of CHON-001 cell growth.
• Hsa_circ_0032131 acts as a competing endogenous RNA for miR-502-5p.
• Knockdown of hsa_circ_0032131 attenuated OA symptoms in vivo by inactivating the STAT3 signaling pathway.

Conclusions:

• Hsa_circ_0032131 promotes osteoarthritis progression through the miR-502-5p/PRDX3/Trx1/STAT3 axis.
• Silencing hsa_circ_0032131 demonstrates therapeutic potential for osteoarthritis.
• Targeting hsa_circ_0032131 offers a novel strategy for OA treatment.