Angelman-Syndrom: Forschungsarbeit und klinische Studie. Edwin J Weeber, Ph.D.

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Angelman-Syndrom: Forschungsarbeit und klinische Studie Edwin J Weeber, Ph.D.

Das UBE3A Gen

Synaptische Verbindung

Injektion eines Virus mit UBE3A direkt ins Gehirn Ergebnis: Gedächtnisprobleme Lernprobleme Probleme mit der synaptischen Kommunikation

Möglichkeiten finden, das Angelman Syndrom zu behandeln 1. Kann das väterliche Gen aktiviert werden? 2. Kann man das Fehlen von UBE3A wettmachen?

A-T C-G AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC

A-T C-G AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC

Transcription machinery Translation machinery AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG AACGUCAAGCUAGCAACGCGC

Mother s Gene Transcription machinery Translation machinery UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW AACGUCAAGCUAGCAACGCGC

Father s gene UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG AAAUUCCGCGUUGCUAGCUUGACGUUAGGCCAAAC AAAUUCCGCGUUGCUAGCUUGACGUUAGGCCAAAC UGCAAGUUUGGCCUAACGUCAAGCUAGCAACGCGC AAAUUCCGCGUUGCUAGCUUGACGUUAGGCCAAAC TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW AAAUUCCGCGUUGCUAGCUUGACGUUAGGCCAAAC AAAUUCCGCGUUGCUAGCUUGAC UAGCUUGACGUUAGGCCAAAC

Mothers Gene UBE3A PW deletion mutation alteration Fathers Gene UBE3A PW

Paternal Maternal

Paternal Maternal CH3 CH3 CH3 CH3 CH3 CH3 CH3 CH3 CH3 CH3

Mothers Gene CH3 CH3 UBE3A CH3 CH3 PW CH3 deletion mutation alteration Fathers Gene UBE3A PW

Topoisomerasehemmer Ben Philpot, Ph.D.

Topoisomerase wird für die DNA Replikation / Zellteilung benötigt

Arthur L. Beaudet, M.D. ISIS Pharmacueticals UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG UGCAAGUUUGGCCUAACGUCAAGCUAGCAACGCGC AACGUCAAGCUAGCAACGCGC AAAUUCCGCGUUGCUAGCUUGACGUUAGGCCAAAC TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW

Die Zinkfinger-Technik David Segal, Ph.D. ATT CCG GGT TTC

Zinc Finger technology David Segal, Ph.D. Paternal gene UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW

Virale Methoden Edwin Weeber, Ph.D.

Virale Methoden Edwin Weeber, Ph.D.

Entdeckung neuer Medikamente Scott Dindot, Ph.D. Edwin Weeber, Ph.D. UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW

Entdeckung neuer Medikamente Scott Dindot, Ph.D. Edwin Weeber, Ph.D. UBE3A AGGTTCTGAAATTCCGCGTTGCTAGCTTGACGTTAGGCCAAACTTGCACGTTAATTGG TCCAAGACTTTAAGGCGCAACGATCGAACTGCAATCCGGTTTGAACGTGCAATTAACC PW

Weitere Methoden, das Angelman Syndrom zu behandeln Kann man das Fehlen von UBE3A wettmachen?

Eric Klann, Ph.D. Zafar Nawaz, Ph.D. Gary Lynch, Ph.D.

Besserung der Symptome bei der Angelman Syndrom Maus Proteinaustausch. (protein replacement) CaMKII Mutation. (CamKII mutation) Natrium /Kalium ATPase. (Na/K ATPase) Ampakine. Reelin.* *Unveröffentlicht

Potenzielle von der FDA genehmigte Medikamente als Therapeutika für das Angelman Syndrom Potential FDA Approved Drugs as Therapeutics for Angelman Syndrome

Kriterien Von der FDA genehmigt. Positive Wirkung bei anderen humanen kognitiven Störungen. Wirksam in Bereichen, die bei AS verändert sind. FDA Approved. Beneficial effects in other human cognitive disorders. Work on sites shown to be altered in AS.

Minocyclin Anwendung / bzw. klinische Studien zu: o Schizophrenie o Chronische Polyarthritis o Huntington Krankheit o Verletzungen der Wirbelsäule o Fragiles X Syndrom Schizophrenia Rheumatoid Arthritis Huntington's Disease Spinal Cord Injury Fragile X Mental Retardation

Minocyclin Tetrazyklin mit breitem Wirkspektrum Kann aufgrund seiner Eigenschaften ins Gehirn eindringen Wird vor allem zur Behandlung von Akne verwendet Kaum Nebenwirkungen Seit 1972 in Gebrauch Broad spectrum tetracycline antibiotic Properties allow it to penetrate the brain Primarily used to treat acne Very few side effects Used since 1972

Studienbeginn Woche 1 Studienende Woche 8 Rückkehr Woche 16 Kein Medikament Tägliche Medikamentengabe April 2012 Start 21. September Ende erste 12 Patienten März 2013 Ende 24 Patienten / jede Woche 2 Patienten Einarmige Studie: Bericht

Studienbeginn Woche 1 Studienende Woche 8 Rückkehr Woche 16 Tägliche MedikamentengabeKein Medikament 1. 3. 2.

Schlussfolgerungen Wie das Mausmodell zeigt, ist das Angelman Syndrom anscheinend ein biochemischer, kein entwicklungsbezogener Defekt. Die Besserung des kognitiven Defekts bei ausgewachsenen AS Mäusen deutet darauf hin, dass bei Patienten mit der Diagnose AS eine therapeutische Intervention von Nutzen sein kann. Therapeutika, die die synaptische Funktion verbessern, können bei der Behandlung von AS von Nutzen sein. Angelman Syndrome, supported by the mouse model, appears to be a biochemical, not a developmental, defect. Recovery of the cognitive defect in adult AS mice suggest that therapeutic intervention may be beneficial for diagnosed AS patients. Therapeutics that enhance synaptic function may be useful in the treatment of AS.

Stiftung für Therapeutika für das Angelman-Syndrom NINDS Jerome-Lejeune-Stiftung

Danksagung Erasmus-Universität Ype Elgersma UCLA Alcino Silva Baylor College of Medicine Art Beaudet UTSW in Dallas Joachim Herz, Ph.D. Uwe Beffert, Ph.D. University of Alabama J. David Sweatt, Ph.D. Duke University Yong-Hui Jiang Texas A&M Scott Dindot