Lab Members

Our Staff

Astrid Haase.

Astrid holds an MD degree from the University of Vienna (Austria) and a PhD from the University of Basel (Switzerland). During her time as a graduate student in Dr. Witek Filipowicz’ group, Astrid focused on microRNA(miRNA)-mediated gene silencing and discovered that TRBP is a protein partner of human Dicer. As a postdoctoral fellow with Dr. Greg Hannon at the Cold Spring Harbor Laboratory (CSHL), Astrid identified a novel nuclease -Zucchini/PLD6- that generates primary piRNAs in flies and mammals. In 2015, Astrid joined the NIDDK/NIH-IRP as a Stadtman Tenure-Track Investigator and achieved tenure in 2023. Together with a team of enthusiastic young scientists, she continues to investigate mechanisms of small RNA-based genome surveillance using a multidisciplinary approach.

Qingcai Meng.
Qingcai Meng, Ph.D.
Research Fellow

PhD - School of Life Science and Biotechnology, Shanghai Jiao Tong University

Qingcai’s graduate work focused on regulatory mechanisms that control floral organ development in rice. Her project focuses on mechanisms of nuclear RNA export in piRNA biology. Outside the lab, Qingcai likes to play and grow flowers.

Thenia Konstantinidou.
Parthena (Thenia) Konstantinidou, Ph.D.
Postdoctoral Fellow

Ph.D. – NIH-GPP with the University of Patras (Greece)
MSc - University of Patras, Greece

Thenia studies the mechanisms of piRNA biogenesis and piRNA-mediated gene silencing in Drosophila ovaries. Outside the lab, she is a space enthusiast, fascinated by the mysteries of the universe. She also enjoys reading and outdoor activities with friends.

Zuzana Loubalova.
Zuzana Loubalova, Ph.D.
Postdoctoral Fellow

Ph.D. – Charles University, Prague

During my graduate studies in Dr. Petr Svoboda’s lab, I investigated the biological importance of the piRNA pathway in the mammalian female germline. My current work studies the piRNA pathway from a genomics and mechanistic perspective. Outside the lab, I enjoy hiking in nature and good beer with friends.

Angel Jaimes.
Angel Jaimes, B.Sc.
Postbaccalaureate student (IRTA)

B.Sc. - Kennesaw State University, GA

Angel is currently working on his undergraduate honors thesis on muscle gene activation in Drosophila, and will be joining the Haase-lab in summer 2023. He is interested to understand how the germline is faithfully specified and maintained across generations. To help investigate this exciting question, he will probe mechanisms of piRNA-mediated transposon silencing and piRNA inheritance in animal development. In his free time, Angel enjoys reading science fiction and nonfiction, taking care of his plants, and hiking to stargaze or to collect fun samples to examine under a microscope.

Franziska Ahrend.
Franziska Ahrend, M.Sc.
Graduate Student, NIH graduate partnership with the University of Regensburg

M.Sc. – Troy University

B.Sc. Molecular Biology – Johannes Gutenberg University & Barry University

Franziska is a bioinformatician currently pursuing her PhD in partnership with the University of Regensburg (Lab ofProf. Dr. Gunter Meister). Her research focuses on understanding the role of PIWI-interacting RNAs (piRNAs) and their involvement in safeguarding genome integrity by silencing mobile genetic elements, particularly in the context of spermatogenesis in mice and humans. Franziska’s work aims to clarify the formation and adaptation of piRNA clusters and exploring how they contribute to fertility regulation. She is also interested in the intersection of machine learning and bioinformatics, particularly in applying these techniques to genetic testing and diagnostics. Outside of her research, Franziska enjoys being outdoors, playing tennis, and spending time with her family.

Our Alumni

Alex Friman.
Aleksandr (Alex) Friman, M.Sc. M.Eng.
Graduate student

Graduate student, NIH graduate partnership with University of Maryland, College Park
M.Sc. in Bioinformatics from Johns Hopkins University

Timothy O.
Timothy O, B.Sc.
Postbaccalaureate student (IRTA)
Adrianna Hernandez
Postbac. IRTA (2021-2023, shared with NCI/CCR); Medical School
Dan Stoyko.
Daniel (Dan) Stoyko
Postbac. IRTA (2019-2022); PhD student, MIT

BSc – Stockton University, New Jersey

Pavol Genzor.
Pavol Genzor, Ph.D.
Research Fellow (Postdoc. VF 2015-2020, RF 2020-2022); Sr. Computational Biologist at the Henry M. Jackson Foundation for the Advancement of Military Medicine

PhD – Johns Hopkins University, Baltimore MD

Celine Marlin Andrews.
Celine Marlin Andrews
Postbac. IRTA (2018-2020); Med. student, Virginia Tech Carilion
Sanga Mitra, Ph.D.
Postdoctoral VF (2016-2019); S.R.F at India Assoc. for Science
Prisma Lopez
Postbac. IRTA (2016-2017); Researcher at Tufts Medical Center
Leif Benner
Rotation student (05-08 2017); PhD student, JHU/NIH
Alexandra Elchert
Postbac. IRTA (2017-2019); PhD student, Harvard Medical School
Sushi Sobti
Postbac. IRTA (2016-2018); PhD student, UCSF
Neha Bokil
Postbac. IRTA (2016-2017); PhD student, MIT
Seth Cordts
Postbac. IRTA (2015-2016); PhD student, Stanford
Chad Stein
Postbac. IRTA (2015-2017); PhD student, Harvard Medical School
Soyeon Showman
Postbac. IRTA (2015-2016); PhD student, U. of Washington

Group Photos

Lab Pictures 2025

RNA Biology Section lab members. RNA Biology Section lab members outdoors standing in front of a tree. NIDDK RNA Biology Section lab members group photo. RNA Biology Section lab members sitting on a park table outdoors.

Thenia’s Graduation 2023

Thenia Konstantinidou’s graduation 2023 Thenia Konstantinidou’s graduation 2023 Thenia Konstantinidou’s graduation 2023

Lab Pictures 2022

Haase Lab Members 2022Haase Lab Members 2022 Haase Lab 2022Haase Lab 2022

Lab Pictures 2020

Group photo of the RNA Biology Section members Haase Lab Members 2020 Group photo of the RNA Biology Section members Haase Lab Members 2020

Lab Picture 2019

from left to right: Pavol Genzor, Amir Manzour (NIAMS collaborator), Astrid Haase, Allie Elchert, Celine Marlin Andrews, Thenia Konstantinidou. from left to right: Pavol Genzor, Amir Manzour (NIAMS collaborator), Astrid Haase, Allie Elchert, Celine Marlin Andrews, Thenia Konstantinidou.

Lab Picture 2017

Haase lab 2017 from left to right: Prisma Lopez, Allie Elchert, Neha Bokil, Astrid Haase, Pavol Genzor, Seth Cordts, Chad Stein
Last Reviewed March 2025