Characterization and biological activity of new 4-oxo-1,4-dihydrocinnoline-based inhibitors of the tyrosine phosphatase PTP1B and TCPTP

   
Derkach K.V.1 , Zakharova I.O.1, Bakhtyukov A.A.1, Sorokoumov V.N.2, Kuznetsova V.S.1, Shpakov A.O.3

1. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
2. Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia
3. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia; Medical Faculty, St. Petersburg State University, St. Petersburg, Russia
Section: Experimental Study
DOI: 10.18097/PBMC20226806427      PubMed Id: 36573409
Year: 2022  Volume: 68  Issue: 6  Pages: 427-436
Functional disorders in obesity are largely due to a decrease in tissue sensitivity to insulin and leptin. One of the ways to restore it is inhibition of protein phosphotyrosine phosphatase 1B (PTP1B) and T-cell protein phosphotyrosine phosphatase (TCPTP), negative regulators of the insulin and leptin signaling. Despite progress in the development of inhibitors of these phosphatases, commercial preparations based on them have not been developed yet, and the mechanisms of action are poorly understood. The aim of the work was to study the effect of new derivatives of 4-oxo-1,4-dihydrocinnoline (PI04, PI06, PI07) on the activity of PTP1B and TCPTP, as well as to study the effect of their five-day administration (i.p., 10 mg/kg/day) to Wistar rats with diet-induced obesity on body weight and fat, metabolic and hormonal parameters, and gene expression of phosphatase and insulin and leptin receptors in the liver. It has been shown that PI04 is a mild, low selective inhibitor of both phosphatases (PTP1B, IC50=3.42(2.60–4.51) μM; TCPTP, IC50=4.16(3.49–4.95) μM), while PI06 and PI07 preferentially inhibit PTP1B (IC50=3.55 (2.63–4.78) μM) and TCPTP (IC50=1.45(1.18–1.78) μM), respectively. PI04 significantly reduced food intake, body weight and fat, attenuated hyperglycemia, normalized glucose tolerance, basal and glucose-stimulated levels of insulin and leptin, and insulin resistance index. Despite the anorexigenic effect, PI06 and PI07 were less effective, having little effect on glucose homeostasis and insulin sensitivity. PI04 significantly increased the expression of the PTP1B and TCPTP genes and decreased the expression of the insulin and leptin receptor genes. PI06 and PI07 had little effect on these indicators. Thus, PI04, the inhibitor of PTP1B and TCPTP phosphatases, restored metabolic and hormonal parameters in obese rats with greater efficiency than inhibitors of PTP1B (PI06) and TCPTP (PI07). This indicates the prospect of creating mixed PTP1B/TCPTP inhibitors for correction of metabolic disorders.
Download PDF:  
Keywords: protein phosphotyrosine phosphatase 1B, T-cell protein phosphotyrosine phosphatase, inhibitor, obesity, appetite, insulin, leptin, liver
Citation:

Derkach, K. V., Zakharova, I. O., Bakhtyukov, A. A., Sorokoumov, V. N., Kuznetsova, V. S., Shpakov, A. O. (2022). Characterization and biological activity of new 4-oxo-1,4-dihydrocinnoline-based inhibitors of the tyrosine phosphatase PTP1B and TCPTP. Biomeditsinskaya Khimiya, 68(6), 427-436.
References  
 2024 (vol 70)
 2023 (vol 69)
 2022 (vol 68)
 2021 (vol 67)
 2020 (vol 66)
 2019 (vol 65)
 2018 (vol 64)
 2017 (vol 63)
 2016 (vol 62)
 2015 (vol 61)
 2014 (vol 60)
 2013 (vol 59)
 2012 (vol 58)
 2011 (vol 57)
 2010 (vol 56)
 2009 (vol 55)
 2008 (vol 54)
 2007 (vol 53)
 2006 (vol 52)
 2005 (vol 51)
 2004 (vol 50)
 2003 (vol 49)