Astrid Desiree Haase, M.D., Ph.D.

Senior Investigator

RNA Biology Section, Laboratory of Cell & Molecular Biology

NIDDK

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Building NIHBC 08, Room 1A04
8 Center Dr
Bethesda, MD 20892

+1 301 451 5125

astrid.haase@nih.gov

Research Topics

We aim to understand how small non-coding RNAs guard genomic integrity.

Current Research

Small non-coding RNAs play crucial roles in development and disease by regulating gene expression, defending against viruses, and controlling mobile genetic elements (transposons) through conserved small RNA silencing pathways. These pathways have been adapted for biotechnology, and provide new avenues for targeted therapy. Our research specifically focuses on PIWI-interacting RNAs (piRNAs), which silence transposons to safeguard the integrity of germline genomes. PIWI-piRNA complexes act as RNA-guided defense mechanisms that are crucial for germ cell health and fertility. To better understand the intricate molecular mechanisms of this RNA-based immune system, we employ an integrated approach that combines genetics, biochemistry, and next-generation sequencing. Although recent progress has provided a framework for comprehending this small RNA-based immune system, further research is necessary to uncover the complex molecular innovations that facilitate the selective silencing of transposons and distinguish these elements from host genes. Our successful achievement of research goals will expand our understanding of the fundamental mechanisms that protect and maintain genomic integrity and could uncover novel RNA-guided mechanisms that have potential for use in technology and therapy.

Applying our Research

Maintaining genome integrity is crucial for the fitness of both cells and organisms, and its loss is associated with various diseases, including cancer. Investigating the molecular mechanisms of small RNA-guided genome defense will enhance our understanding of genome surveillance and inspire innovative biomedical approaches to combat genomic instability in diseases. RNA-based mechanisms have already proven to be effective for biotechnology and targeted therapy, and gaining new insights into piRNA pathways will expand our molecular repertoire even further.

Need for Further Study

Small regulatory RNAs have been found in all domains of life, but their diverse roles in gene regulation and genome surveillance are only beginning to be understood. To fully characterize these regulatory pathways, elucidate their molecular mechanisms, and develop innovative therapies based on their model, further studies are necessary.

Biography

  • Post Doctoral Fellow, Cold Spring Harbor Laboratory, 2007-2015
  • Graduate Student, Friedrich Miescher Institute for Biomedical Research, 2002-2007
  • Ph.D., University of Basel, Switzerland, 2007
  • M.D., University of Vienna, Austria, 2002

Selected Publications

  1. Stoyko D, Genzor P, Haase AD. Hierarchical length and sequence preferences establish a single major piRNA 3'-end. iScience. 2022;25(6):104427.
  2. Meng Q, Stoyko D, Andrews CM, Konstantinidou P, Genzor P, O T, Elchert AR, Benner L, Sobti S, Katz EY, Haase AD. Functional editing of endogenous genes through rapid selection of cell pools (Rapid generation of endogenously tagged genes in Drosophila ovarian somatic sheath cells). Nucleic Acids Res. 2022.
  3. Genzor P, Konstantinidou P, Stoyko D, Manzourolajdad A, Marlin Andrews C, Elchert AR, Stathopoulos C, Haase AD. Cellular abundance shapes function in piRNA-guided genome defense. Genome Res. 2021;31(11):2058-2068.
  4. Genzor P, Cordts SC, Bokil NV, Haase AD. Aberrant expression of select piRNA-pathway genes does not reactivate piRNA silencing in cancer cells. Proc Natl Acad Sci U S A. 2019;116(23):11111-11112.
  5. Stein CB, Genzor P, Mitra S, Elchert AR, Ipsaro JJ, Benner L, Sobti S, Su Y, Hammell M, Joshua-Tor L, Haase AD. Decoding the 5' nucleotide bias of PIWI-interacting RNAs. Nat Commun. 2019;10(1):828.

Related Scientific Focus Areas

This page was last updated on Thursday, November 7, 2024