Owing to the presence of microbial biofilm on the implant, the eradication of biofilm-associated infections poses a challenge for antibiotic therapies. The study aimed to investigate the efficacy and safety of the novel antibiotic agent TNP-2092 in the context of implant infections. In vivo, the periprosthetic joint infection (PJI) rats treated with antibiotics showed an increase in body weight and decrease in swelling, temperature, and width of knee, versus the control group. Meanwhile, inflammatory markers in synovium and serum were decreased in the TNP-2092 group, consistent with the pathological results. Moreover, TNP-2092 was effective in eliminating bacteria and disruption biofilm formation, and further alleviated the abnormal bone absorption and reactive bone changes around the prosthesis. In conclusion, intra-articular injection of TNP-2092 is effective and safety in treating knee PJI in rat. The study provides a foundation for the future utilization of TNP-2092 in the management of implant-related infections.

Link to article：https://doi.org/10.1093/infdis/jiad588

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About TenNor Therapeutics

Incorporated in 2013, TenNor Therapeutics is a near-commercial stage biotechnology company dedicated to the discovery, development and commercialization of differentiated therapies to address unmet medical needs in disease areas associated with bacterial infections and bacterial metabolism. Empowered by its proprietary multi-targeting conjugate molecule technology, TenNor Therapeutics aims to deliver the best therapeutic solutions to overcome the limitations of conventional treatments and improve patient outcomes. As of January 24, 2026, TenNor Therapeutics had built a pipeline of seven innovative programs, including two Core Products, namely, rifasutenizol (TNP-2198), a new molecular entity (“NME”) drug candidate used as part of a triple therapy in combination with amoxicillin and a proton pump inhibitor for the treatment of Helicobacter pylori (“H. pylori”) infection in China and U.S. as well as monotherapy for bacterial vaginosis and C. difficile infection in China; and rifaquizinone (TNP-2092 injection), a triple-targeting antibacterial drug candidate for the treatment of implant-associated bacterial infections, i.e. acute bacterial skin and skin structure infection (“ABSSSI”) and prosthetic joint infection (“PJI”), as well as left ventricular assist device infection (“LVADI”) and catheter-related bloodstream infection (“CRBSI”) in China and the U.S.

For more information, please visit: www.tennortherapeutics.com