Retinoid X Receptors

Publication Title: 
Blood

Insulin-like growth factor binding protein-3 (IGFBP-3) can cause growth suppressive and proapoptotic effects on retinoids in many types of cancer cells. However, the expression and effects of IGFBP-3 in myeloid leukemia cells have not been elucidated. In this study, we found no IGFBP-3 expression in the human myeloid leukemia cell lines either at baseline or after stimulation with all-trans retinoic acid (ATRA). Human recombinant IGFBP-3 induced growth arrest and apoptosis of HL-60 and NB4 cells.

Author(s): 
Ikezoe, Takayuki
Tanosaki, Sakae
Krug, Utz
Liu, Bingrong
Cohen, Pinchas
Taguchi, Hirokuni
Koeffler, H. Phillip
Publication Title: 
Clinical Cancer Research: An Official Journal of the American Association for Cancer Research

PURPOSE: Osteosarcoma is the most common primary malignancy of bone. The long-term survival of osteosarcoma patients hinges on our ability to prevent and/or treat recurrent and metastatic lesions. Here, we investigated the activation of peroxisome proliferator-activated receptor gamma (PPARgamma) and retinoid receptors as a means of differentiation therapy for human osteosarcoma. EXPERIMENTAL DESIGN: We examined the endogenous expression of PPARgamma and retinoid receptors in a panel of osteosarcoma cells.

Author(s): 
He, Bai-Cheng
Chen, Liang
Zuo, Guo-Wei
Zhang, Wenli
Bi, Yang
Huang, Jiayi
Wang, Yi
Jiang, Wei
Luo, Qing
Shi, Qiong
Zhang, Bing-Qiang
Liu, Bo
Lei, Xia
Luo, Jinyong
Luo, Xiaoji
Wagner, Eric R.
Kim, Stephanie H.
He, Connie J.
Hu, Yawen
Shen, Jikun
Zhou, Qixin
Rastegar, Farbod
Deng, Zhong-Liang
Luu, Hue H.
He, Tong-Chuan
Haydon, Rex C.
Publication Title: 
Experimental Gerontology

Blockade of growth hormone (GH), decreased insulin-like growth factor-1 (IGF1) action and increased insulin sensitivity are associated with life extension and an apparent slowing of the aging process. We examined expression of genes involved in insulin action, IR, IRS1, IRS2, IGF1, IGF1R, GLUT4, PPARs and RXRs in the hearts of normal and GHR-/- (KO) mice fed ad libitum or subjected to 30% caloric restriction (CR). CR increased the cardiac expression of IR, IRS1, IGF1, IGF1R and GLUT4 in normal mice and IRS1, GLUT4, PPARalpha and PPARbeta/delta in GHR-KO animals.

Author(s): 
Masternak, Michal M.
Al-Regaiey, Khalid A.
Del Rosario Lim, Marc Michael
Jimenez-Ortega, Vanesa
Panici, Jacob A.
Bonkowski, Michael S.
Kopchick, John J.
Wang, Zhihui
Bartke, Andrzej
Publication Title: 
Journal of Lipid Research

Peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), a key regulator of energy metabolism and lipid homeostasis in multiple highly oxidative tissues, has been implicated in the metabolic derangements of diabetes and obesity. However, relatively less is known regarding its role in neurological functions. Using shotgun lipidomics, we investigated the lipidome of mouse cerebral cortex with generalized deficiency of PGC-1α (PGC-1α(-/-)) versus wild-type (WT) mice under standard diet and chronically calorically restricted conditions.

Author(s): 
Kiebish, Michael A.
Young, Dee M.
Lehman, John J.
Han, Xianlin
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