Canagliflozin interrupts mTOR-mediated inflammatory signaling and attenuates DMBA-induced mammary cell carcinoma in rats

Biomed Pharmacother. 2022 Nov:155:113675. doi: 10.1016/j.biopha.2022.113675. Epub 2022 Sep 15.

Abstract

Background: Breast cancer prevalence has been globally increasing, therefore, introducing novel interventions in cancer treatment is of a significant importance. The present study was designed to investigate the anti-cancer effect of Canagliflozin (CNG) in an experimental model of DMBA-induced mammary carcinoma in female rats.

Methods: 18 female rats were divided into three experimental groups: Normal control, DMBA control, DMBA+ CNG treated group. DMBA (7.5 mg/kg) was injected subcutaneously in the mammary cells twice weekly for 4 weeks and CNG (10 mg/kg) was orally administered daily for an additional 3 weeks while DMBA control rats only received the vehicle for 3 weeks. Tumors' weight and volume were measured, BRCA-1 and TAC were quantified in serum samples, mTOR, caspase-1, NFκB, IL-1β, NLRP3, GSDMD and MDA were quantified in tumors' homogenates.

Results: CNG treatment increased the BRCA-1 expression, suppressed mTOR inflammatory pathway, attenuated tumor inflammatory mediators; NLRP3, GSDMD, NFκB, IL-1β, suppressed the oxidative stress and inhibited tumor expression of the proliferation biomarker; Ki67.

Conclusion: CNG modulated mTOR-mediated signaling pathway and attenuated pyroptotic, inflammatory pathways, suppressed oxidative stress and eventually inhibited DMBA-induced mammary carcinoma proliferation.

Keywords: Canagliflozin; DMBA; MTOR; Mammary cell carcinoma; Pyroptosis.

MeSH terms

  • 9,10-Dimethyl-1,2-benzanthracene / toxicity
  • Animals
  • Canagliflozin
  • Carcinoma*
  • Caspase 1 / metabolism
  • Female
  • Inflammation Mediators
  • Ki-67 Antigen / metabolism
  • Mammary Neoplasms, Experimental* / chemically induced
  • Mammary Neoplasms, Experimental* / drug therapy
  • Mammary Neoplasms, Experimental* / prevention & control
  • NLR Family, Pyrin Domain-Containing 3 Protein
  • Rats
  • Rats, Sprague-Dawley
  • Signal Transduction
  • TOR Serine-Threonine Kinases / metabolism

Substances

  • 9,10-Dimethyl-1,2-benzanthracene
  • Ki-67 Antigen
  • Canagliflozin
  • NLR Family, Pyrin Domain-Containing 3 Protein
  • Caspase 1
  • TOR Serine-Threonine Kinases
  • Inflammation Mediators
  • mTOR protein, rat