科学研究

Principal Investigators

Carlos Ibanez Ph.D.

E-mail: carlos.ibanez@@cibr.ac.cn(remove one@ when use it)

Phone:

Lab Homepage: http://carlosibanezlab.se/PKU/

Education

Carlos Ibanez studied biology at the University of Buenos Aires, Argentina. His PhD work was conducted at the Leloir Institute (formerly known as Fundacion Campomar) under the direction of Carlos Frasch. 


Professional Experience

Carlos Ibanez did postdoctoral studies at the Karolinska Institute (KI), Sweden, under the direction of the late Håkan Persson

In 1996, he became Professor in Neuroscience at the Department of Neuroscience, Karolinska Institute in Stockholm, Sweden. Information about his KI laboratory can be found HERE

Since 2004, Carlos Ibanez is a member of the Nobel Assembly at the Karolinska Institute, the body that awards the Nobel Prize in Physiology Or Medicine. 

In the Fall of 2012, Carlos Ibanez became jointly appointed as Professor at the Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore (NUS). Information about his NUS laboratory can be found HERE

In January 2020, he joined the McGovern Institute at the School of Life Sciences in Peking University and the Chinese Institute for Brain Research in Beijing, China, as a part-time faculty, where he is now building a new research group.

Research Description

Growth Factor Receptor Signaling and Biology in Nervous System and Metabolism: Neurodegeneration, Dementia and Obesity

With a focus on growth factor receptor signalling, the aim of our research is the discovery of novel biological principles and mechanisms of general importance for nervous system development and metabolic regulation.

We are currently developing the following lines of investigation:

  • Death receptor signaling and physiology in neurodegeneration
    Our aim in this programme is to elucidate the molecular mechanisms and physiological relevance of death-receptor signaling in the nervous system and to harness this knowledge for the development of novel treatments to neurodegenerative diseases and neurotrauma. The main focus is on the p75 neurotrophin receptor (p75NTR), a member of the Tumor Necrosis Factor Superfamily.  p75NTR signaling actively contributes to neuronal and glial cell damage, axonal degeneration and synaptic dysfunction, hence there is a good rationale for inhibiting p75NTR in neural injury and neurodegeneration. However, p75NTR has been a difficult receptor to study, and the mechanisms by which p75NTR couples to downstream pathways and how they contribute to p75NTR function remain outstanding questions in the field.

  • Metabolic regulation by activin receptors ALK4 and ALK7
    This programme focuses on the role of a novel regulatory network, formed by members of the transforming growth factor-beta (TGF-b) superfamily and their receptors, in the control of glucose homeostasis, fat accumulation and energy balance. It is based on our original discovery of the TGF-b superfamily receptor ALK7 and our recent studies on the functions of activin signalling through ALK7 and ALK4 in pancreatic islets, adipose tissue, and hypothalamus. This program offers a new inroad to the study of metabolic regulation and involves complementary studies in cell culture as well as conditional and knock-in mouse models.

  • Control of brain microvasculature integrity and function by neurotrophin signaling
    The central aim of this research is to elucidate the role of neurotrophin signaling in cerebrovascular disease, focusing on the actions of brain-derived neurotrophic factor (BDNF) and its receptors on cellular elements of the brain microvasculature, under normal conditions and following cerebrovascular damage and AD-related neurodegeneration. BDNF is one of the most important growth factors contributing to brain development, as well as neuronal and synaptic maintenance and function. Alterations in BDNF expression or function have been linked to a variety of neurological conditions.

  • Novel chemical-biology approach to identify small-molecule modulators of transmembrane receptor activity and signaling
    Numerous studies have indicated that many transmembrane receptors exist in a pre-assembled dimeric or oligomeric complex to which ligand binding triggers conformational re-arrangement of intracellular domains. These changes are mediated by the relative movement of transmembrane domains (TMDs) in receptor complexes. Small molecules targeting the molecular interphases of TMDs in receptor complexes may perturb the TMD movements that underlie ligand-mediated receptor activation and hence constitute useful chemical probes for acute and reversible modulation of transmembrane receptor activity. Our recent studies using the TMD of the p75NTR neurotrophin receptor provide proof-of-principle for the validity of this approach. We will exploit this discovery pipeline to identify novel chemical probes that modify the activity profiles of p75NTR, TrkB and ALK7 receptors, and to utilize the identified compounds to extract new knowledge on receptor signaling activity and function; and develop novel therapeutics for cancer, metabolic disease and neurodegenerative syndromes.

Publications

We do not yet have publications from the Beijing laboratories, as these are just being established. Please see our recent publications from our teams at the Karolinska Institute, Sweden HERE and NUS, Singapore HERE.