Institut für Experimentelle Genetik, IEG

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Institute of Experimental Genetics
Institute of Experimental Genetics
Anfahrt zum Helmholtz Zentrum München
Institut für Experimentelle
Genetik, IEG
Helmholtz Zentrum München
Prof. Dr. Martin Hrabé de Angelis
Lehrstuhl für Experimentelle Genetik, TUM
PD Dr. Johannes Beckers
Model for Human Disease
Institute of Experimental Genetics
Thematische Schwerpunkte
1. Diabetes
2. Knochen- / Knorpelerkrankungen
3. Modell der embryonalen Entwicklung (Fokus: Notch
Signalweg)
Blume-Jensen, P., Janknecht, R., and Hunter, T. (1998), Curr Biol 8, 779-82.
Institute of Experimental Genetics
Institute of Experimental Genetics
Caused by a cryptic splice site in Col1a1
T. Lisse, M. Hrabé de Angelis, et al., PLOS Genetics 2008
BONE & CARTILAGE DISEASES
Model for type II OI
Bone phenotype:
Mineralisation defect
(Nature 423, pp320)
(Nature 423, pp333)
(Nature 423, pp346)
(Cell 85, pp307)
Patterning
Growth
Remodeling Immune system
Polydactyly
ALI3, ALI9,
ALI12, ALI19,
ALI37
Osteogenesis
imperfecta
AGA2,
SMA4
Osteoporosis
DXA1, DXA2
Syndactyly
ALI6, ALI10,
ALI27
Bone deformity
Fractures
BMC and BMD reduced
Rheumatoid arthritis
Psoriatic arthritis
ALI5, ALI14, ALI18
Osteoarthritis
Ankylosis
ALI34
Institute of Experimental Genetics
Institute of Experimental Genetics
The Screens
Bisphosphonate rescues bone phenotype
but n o t lethality
%
peri-lethality
T. Lisse, M. Hrabé de Angelis et al.
PLOS Genetics in press
weeks
Nature Methods 2005, Nature Genetics 2005, 2008, 2009, Cell 2009...
www.mouseclinic.de
Institute of Experimental Genetics
Institute of Experimental Genetics
SYSTEMIC DISEASES
Bone phenotype
ƒ Mineralisation defect
ƒ Bone deformity
ƒ Fractures
ƒ Beaded ribs
ƒ Reduced bone mineral content & decreased bone mineral
density
Systemic effects
ƒ Lung phenotype
ƒ Heart phenotype
ƒ Reduced fat mass & increased lean mass
ƒ Metabolic alterations
Institute of Experimental Genetics
Institute of Experimental Genetics
Gene–environment interactions in Type 2 Diabetes pathogenesis
Experimental mouse models
Genetic factors
Environment
Allow for detailed & accurate phenotyping due to
• Environmental factors that can be tightly controlled
• Genetic diversity can be reduced
• No limitations in biosamples
mtGPAT1 KO
e.g. NONcNZO10/LtJ
Dll1C413Y mutants
e. g. mUCP1 TG
Mouse models
Nutrition challenge
Obesity (e.g. diet-induced)
Maternal factors (embryo transfer)
Type 2 Diabetes
Pancreatic β-cell dysfunction
(impaired insulin secretion)
Impaired insulin action
What develops first ?
Localisation of organ-specific defect.
mtGPAT1 KO
Pathophenotype closely mimicks
human polygenic obesity-induced
diabetes
• Hyperglyceamia
• Pancreatic islet atrophy
• Liver steatosis
• Increased serum insulin, leptin, TAG
PPARα KO
and
many
more
Mice with mutations in particular
genes to unravel their function in
T2D pathogenesis
Institute of Experimental Genetics
Institute of Experimental Genetics
Key Activities of IEG
Was wir anbieten:
Large-scale genomics approaches:
• Mutant Production (Mouse)
– Mutagenesis Screens
• Archiving: German node of EMMA
• Phenotypic Characterisation
– German Mouse Clinic
• Genomics, Transcriptomics and Proteomics
• Data Aquisition and Interpretation
• In silico Functional Genomics
Institute of Experimental Genetics
Blockpraktikum "Entwicklungsgenetik der Tiere“ 10 ECTS (mit IDG)
Themes:
- From Genes to Mouse Mutants and their Phenotype Analysis
- Zebrafish Embryology
Tierversuche/Tierschutz
Establishment & Culture of Embryonic Stem Cells
Gene Mutagenesis in Embryonic Stem Cells
Generation of Knockout/Transgenic Mice
Cryoconservation of germ cells and in vitro fertilisation
In vivo Mutagenesis (ENU, Transposons)
Zebrafish Embryology
Zebrafish Embryology
Phenotyping I: Histology
Phenotyping II: Gene expression analysis
Phenotyping III: German Mouse Clinic
Phenotyping IV: Behavioural Analysis
• Forschungspraktika:
– Anmeldung zu jeder Zeit
– Praktikumsdauer 6 Wochen, bis zu 10 CPs
– Vortrag und Präsentation der Arbeit im Anschluss
and Praktikum
• Blockpraktikum: Entwicklungsgenetik der Tiere
• Seminare, Journal Clubs (SS)
• Vorlesungen:
– Entwicklungsgenetik
– Genomik
• Master/Diplomarbeiten und Promotionen
Institute of Experimental Genetics
Vorlesung: Entwicklungsgenetik
First week in the life of a mouse
From the gastrula to midgestation
Principles in development
How to get "organized”
“Up and down, Back and Belly, Left and Right": The question of positional
information.
lateral inhibition - watch your neighbour!”
epithelial-mesenchymal transformation - The same story everywhere.
How to pattern extremities
The other side of life – aging
Organogenesis:
"Get in Shape": Making bones and muscle from somites.
the ectoderm/neuroectoderm and its derivatives
the endoderm and its derivatives
Development of sensory systems:
visual system,
auditory system,
smell, taste and touch
General discussion, social and ethical issues
Institute of Experimental Genetics
Institut für Experimentelle
Genetik, IEG
Helmholtz Zentrum München
Prof. Dr. Martin Hrabé de Angelis
Lehrstuhl für Experimentelle Genetik, TUM
PD Dr. Johannes Beckers
[email protected]
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