PMID- 34481907 OWN - NLM STAT- MEDLINE DCOM- 20220223 LR - 20220223 IS - 1872-9754 (Electronic) IS - 0197-0186 (Linking) VI - 150 DP - 2021 Nov TI - Inhibition of mitochondrial pyruvate carrier 1 by lapatinib ditosylate mitigates Alzheimer's-like disease in D-galactose/ovariectomized rats. PG - 105178 LID - S0197-0186(21)00224-2 [pii] LID - 10.1016/j.neuint.2021.105178 [doi] AB - Mitochondrial, autophagic impairment, excitotoxicity, and also neuroinflammation are implicated in Alzheimer's disease (AD) pathophysiology. We postulated that inhibiting the mitochondrial pyruvate carrier-1 (MPC-1), which inhibits the activation of the mammalian target of rapamycin (mTOR), may ameliorate the neurodegeneration of hippocampal neurons in the rat AD model. To assess this, we used lapatinib ditosylate (LAP), an anti-cancer drug that inhibits MPC-1 through suppression of estrogen-related receptor-alpha (ERR-alpha), in D-galactose/ovariectomized rats. AD characteristics were developed in ovariectomized (OVX) rats following an 8-week injection of D-galactose (D-gal) (150 mg/kg, i.p.). The human epidermal growth factor receptor-2 (HER-2) inhibitor, LAP (100 mg/kg, p.o.) was daily administered for 3 weeks. LAP protected against D-gal/OVX-induced changes in cortical and hippocampal neurons along with improvement in learning and memory, as affirmed using Morris water maze (MWM) and novel object recognition (NOR) tests. Furthermore, LAP suppressed the hippocampal expression of Abeta1-42, p-tau, HER-2, p-mTOR, GluR-II, TNF-alpha, P38-MAPK, NOX-1, ERR-alpha, and MPC-1. Also, LAP treatment leads to activation of the pro-survival PI3K/Akt pathway. As an epilogue, targeting MPC-1 in the D-gal-induced AD in OVX rats resulted in the enhancement of autophagy, and suppression of neuroinflammation and excitotoxicity. Our work proves that alterations in metabolic signaling as a result of inhibiting MPC-1 were anti-inflammatory and neuroprotective in the AD model, revealing that HER-2, MPC-1, and ERR-alpha may be promising therapeutic targets for AD. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Mansour, Heba M AU - Mansour HM AD - Department of Pharmacology, Egyptian Drug Authority, EDA, formerly NODCAR, Giza, Egypt. Electronic address: heba.mo.mansour@std.pharma.cu.edu.eg. FAU - Fawzy, Hala M AU - Fawzy HM AD - Department of Pharmacology, Egyptian Drug Authority, EDA, formerly NODCAR, Giza, Egypt. FAU - El-Khatib, Aiman S AU - El-Khatib AS AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt. FAU - Khattab, Mahmoud M AU - Khattab MM AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt. LA - eng PT - Journal Article DEP - 20210903 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (Mitochondrial Proteins) RN - 0 (Monocarboxylic Acid Transporters) RN - 0 (Mpc1 protein, rat) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Solute Carrier Proteins) RN - 0VUA21238F (Lapatinib) RN - X2RN3Q8DNE (Galactose) SB - IM MH - Alzheimer Disease/chemically induced/etiology/*metabolism/*prevention & control MH - Animals MH - Female MH - Galactose/*toxicity MH - Lapatinib/*pharmacology/therapeutic use MH - Maze Learning/drug effects/physiology MH - Mitochondrial Proteins/*antagonists & inhibitors/metabolism MH - Monocarboxylic Acid Transporters/*antagonists & inhibitors/metabolism MH - Ovariectomy/*adverse effects/trends MH - Protein Kinase Inhibitors/pharmacology/therapeutic use MH - Rats MH - Rats, Wistar MH - Solute Carrier Proteins/*antagonists & inhibitors/metabolism OTO - NOTNLM OT - Alzheimer's disease OT - Estrogen-related receptor-alpha OT - Human epidermal growth factor receptor-2 OT - Lapatinib ditosylate OT - Mitochondrial pyruvate carrier-1 EDAT- 2021/09/06 06:00 MHDA- 2022/02/24 06:00 CRDT- 2021/09/05 20:37 PHST- 2021/08/16 00:00 [received] PHST- 2021/08/19 00:00 [revised] PHST- 2021/09/01 00:00 [accepted] PHST- 2021/09/06 06:00 [pubmed] PHST- 2022/02/24 06:00 [medline] PHST- 2021/09/05 20:37 [entrez] AID - S0197-0186(21)00224-2 [pii] AID - 10.1016/j.neuint.2021.105178 [doi] PST - ppublish SO - Neurochem Int. 2021 Nov;150:105178. doi: 10.1016/j.neuint.2021.105178. Epub 2021 Sep 3.