Running Head: Atypical PKC in AICAR, Metformin and Exercise Actions
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4 5 6 7 8 9 10 11 12 Sajan, M.P.*, Bandyopadhyay, G.*, Miura, A.*, Standaert, M.L.*, Nimal, S., Longnus, S.L. **, Van 13 Obberghen, E.**, Hainault, I.***, Foufelle, F.***, Kahn, R., Braun, U., Leitges, M. and Farese, 14 R.V.* ††† 15 16 17 18 19 20 21 22 23 24 25 From (a) the Research Service, James A. Haley Veterans Hospital, and Department of Internal 26 Medicine, University of South Florida College of Medicine Tampa, Fl, USA*; (b) INSERM U145, 27 Institut Federatif de Recherche 50, Faculte de Medicine, 06107 Nice Cedex 2, France**; (c) 28 INSERM U671, Centre de Recherches Biomedicales des Cordeliers, Universite Pierre et Marie 29 Curie, 75270 Paris Cedex 06, France***; (d) the Joslin Center and Harvard Medical School, 30 Boston, MA, USA, Biotechnology Centre of Oslo, Oslo, Norway; and (e) the Roskamp Institute, 31 Sarasota Fl, USA 32 33 34 35 36 Running Head: Atypical PKC in AICAR, Metformin and Exercise Actions 37 38 39 40 41 Contacting Information: Robert V. Farese, M.D. 42 James A. Haley Veterans Medical Center 43 13000 Bruce B. Downs Blvd. 44 Tampa, Fl 33612 45 Telephone, (813) 972-7662 46 Fax, (813) 972-7623 47 Email address, [email protected] 48 49 50 51 52 53 Articles in PresS. Am J Physiol Endocrinol Metab (November 3, 2009). doi:10.1152/ajpendo.00392.2009
منابع مشابه
AICAR and metformin, but not exercise, increase muscle glucose transport through AMPK-, ERK-, and PDK1-dependent activation of atypical PKC.
Activators of 5'-AMP-activated protein kinase (AMPK) 5-aminoimidazole-4-carboxamide-1-beta-d-ribofuranoside (AICAR), metformin, and exercise activate atypical protein kinase C (aPKC) and ERK and stimulate glucose transport in muscle by uncertain mechanisms. Here, in cultured L6 myotubes: AICAR- and metformin-induced activation of AMPK was required for activation of aPKC and ERK; aPKC activation...
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Exercise increases skeletal muscle glucose uptake, but the underlying mechanisms are only partially understood. The atypical protein kinase C (PKC) isoforms λ and ζ (PKC-λ/ζ) have been shown to be necessary for insulin-, AICAR-, and metformin-stimulated glucose uptake in skeletal muscle, but not for treadmill exercise-stimulated muscle glucose uptake. To investigate if PKC-λ/ζ activity is requi...
متن کاملRole of the atypical protein kinase C in regulation of 5 -AMP-activated protein kinase in cardiac and skeletal muscle
Ussher JR, Jaswal JS, Wagg CS, Armstrong HE, Lopaschuk DG, Keung W, Lopaschuk GD. Role of the atypical protein kinase C in regulation of 5 -AMP-activated protein kinase in cardiac and skeletal muscle. Am J Physiol Endocrinol Metab 297: E349–E357, 2009; doi:10.1152/ajpendo.00009.2009.—During metabolic stress, phosphorylation and activation of 5 -AMP-activated protein kinase (AMPK) becomes a majo...
متن کاملActivation of the ERK pathway and atypical protein kinase C isoforms in exercise- and aminoimidazole-4-carboxamide-1-beta-D-riboside (AICAR)-stimulated glucose transport.
Exercise increases glucose transport in muscle by activating 5'-AMP-activated protein kinase (AMPK), but subsequent events are unclear. Presently, we examined the possibility that AMPK increases glucose transport through atypical protein kinase Cs (aPKCs) by activating proline-rich tyrosine kinase-2 (PYK2), ERK pathway components, and phospholipase D (PLD). In mice, treadmill exercise rapidly a...
متن کاملA possible role for AMP-activated protein kinase activated by metformin and AICAR in human granulosa cells
BACKGROUND Women with polycystic ovary syndrome (PCOS) are generally insulin- resistant and are consequently often treated with metformin. We investigated the effect of metformin and AICAR on the AMP-activated protein kinase (AMPK) pathway. METHODS We evaluated the effects of 5-amino-imidazole-4-carboxyamide-1- beta-D-ribofuranoside (AICAR) and metformin on tumor necrosis factor (TNF)-alpha- ...
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تاریخ انتشار 2009