Why study aging?

We are all aging!

Aging is the primary risk factor for many human pathologies, including cardiovascular and neurodegenerative diseases, cancer, and diabetes. Yet, understanding how organisms age remains one of the biggest challenges in biology.

How can we do it?

In the past 25 years, experiments in short-lived model systems (yeast, worms, and flies) have revolutionized the way we perceive aging – revealing that the aging rate itself can be manipulated by genetic and environmental interventions. However, the lack of short-lived vertebrate models for genetic studies has significantly limited our understanding of vertebrate aging, including the role of vertebrate-specific genes (e.g. IL8 and APOE), organs (e.g. bones and blood), and physiological processes (e.g. adaptive immunity).

To this end, we have developed a comprehensive genetic platform for rapid exploration of aging and disease in the shortest-lived vertebrate model, the African turquoise killifish, including a sequenced genome, CRISPR/Cas9-based genome editing, and mutant fish for many aging- and disease-relates genes.

(Check out our gallery of the killifish's natural habitat)

What are we interested in?

Taking advantage of this exciting platform, we are trying to answer fundamental questions in biology, such as 1) what is the molecular basis behind the outstanding diversity of lifespan between different animals (which can reach 500-fold difference among vertebrates); and 2) what separates disease from healthy aging? To explore these questions, we are developing a variety of disease models, as well as using cutting edge approaches (including single-cell technology, mass spectrometry, and genome-editing).

Ultimately, our research holds great promise for tackling one of the most fascinating questions in biology – how and why do we age?

Selected publications

Efficient genome engineering approaches for the short-lived African turquoise killifish

Harel I, Valenzano DR, Brunet A., Nature Protoc. 11 (2016)

The African turquoise killifish: a model for exploring vertebrate aging and diseases in the fast lane

Harel I, Brunet A., Cold Spring Harb Symp Quant Biol (2015)

The African Turquoise Killifish Genome Provides Insights into Evolution and Genetic Architecture of Lifespan

Valenzano, D. R., Benayoun, B. A., Singh, P. P., Zhang, E., Etter, P. D., Hu, C. K., Clement-Ziza, M., Willemsen, D., Cui, R., Harel, I., Machado, B.,  E.Yee, M.,  C.Sharp, S. C., Bustamante, C. D., Beyer, A.Johnson, E. A., Brunet, A. Cell (2015)

A platform for rapid exploration of aging and diseases in a naturally short-lived vertebrate.

Harel I, Benayoun BA, Machado B, Singh P, Hu CK, Pech MF, Valenzano DR, Zhang E, Sharp SC, Artandi SE, Brunet A., Cell 160 (2015)

Where to find us

We are located at the Department of Genetics at the Institute of Life Sciences, surrounded by the beautiful Givat Ram campus at the the Hebrew University of Jerusalem (Israel)

Meet the Team

We are looking for highly motivated master/graduate students and postdocs.



Dr. Itamar Harel


Itamar Harel, PhD

Research interests: Aging, disease, and development; quantitative genetics; molecular mechanisms driving homeostasis; Vertebrate-specific traits.

Education: BSc, Ben-Gurion University of the Negev; PhD, Weizmann Institute of Science; Postdoctoral, Stanford

Hometown: Beit Elazari, Israel

Favorite saying: "its just the universe, resisting, the closer you get to revealing its secrets"

Favorite activities outside the lab: Hiking, Running, Painting, and Cooking

Dream baymate: David Attenborough

Birthday: October 6th

Lab Manager


Dr. Adi Gottesman


Adi Gottesman, PhD

Research interests: microbiology; disease; Aging; molecular Genetics.

Education: BSc, Hebrew University, Jerusalem; MSc and PhD:  Hebrew University-Hadassah Medical School, Department of Microbiology and Molecular Genetics

Hometown: Jerusalem, Israel

Favorite saying: "Be happy. It’s one way of being wise."

Favorite activities outside the lab: travelling, Reading, baking and going to the cinema

Dream baymate: Barbara McClintock

Birthday: June 22

Killifish Facility Manager

תמונה מ-ariel velan

Ariel Velan


Ariel Velan, MSc

Research interests: Aging; Quantitative genetics; Population Genetics; Osmoregulation.

Education: BSc, Tel Aviv University; MSc, Hebrew University, Faculty of Agriculture

Hometown: Tel Aviv, Israel

Favorite saying: "A noble spirit embiggens the smallest man"

Favorite activities outside the lab: Cooking, Cycling, Boxing, Reading

Dream baymate: Norm McDonald

Birthday: June 22



Gwendoline Astre


Dr. Gwendoline Astre

Research interests: Aging, Physiology, Inflammation and Genetics

Education: BSc and PhD, Paul Sabatier University, Toulouse (France)

Hometown: Béziers, France

Favorite saying: Against the assault of laughter, nothing can stand.

Favorite activities outside the lab: Hiking, Running, Cooking and Eating, Watching TV series.

Dream baymate: Denis Mukwege

Birthday: February 13th

PhD Student


Uri Goshtchevsky


Uri Goshtchevsky, MSc

Research interests: Temporal, organism-level, regulation of cellular maintenance mechanisms.

Education: BSc, Hebrew University Jerusalem Israel; MSc, Ben-Gurion University in the Negev

Hometown: Rehovot, Israel

Favorite saying: “The person who thinks he can and the person who thinks he can’t are both right”

Favorite activities outside the lab: Hiking, Gaming, Coding, Cooking & Baking, and reading.

Dream baymate: Wayne Brady

Birthday: July 28th

MSc Student


Eitan Moses


Eitan Moses

Research interests: Aging, neural & physiological regulation and the relationship between them, and neurobiology.

Education: BSc, Hebrew University, Jerusalem

Hometown: Alon Shevut, Israel

Favorite saying: “Anything my dad says”

Favorite activities outside the lab: History podcasts, speculative fiction reading and writing, playing with the kids, Trivia.

Dream baymate: The greek goddess Hesychia

Birthday: July 12th (Tammuz 11th)

PhD Student


Henrik Chrzanowski


Henrik Chrzanowski, MSc

Research interests: Aging, cell fate and lineage tracing, cellular senescence, molecular neuroscience.

Education: BSc and MSc, Humboldt University of Berlin (Germany)

Hometown: Hannover, Germany

Favorite saying: “The best is yet to come”

Favorite activities outside the lab: Working out, yoga, going to the beach, reading, card games.

Dream baymate: My childhood dog Jimmy

Birthday: September 7th

PhD Candidate


Tommer Argaman


Tommer Argaman, MSc

Research interests: Aging, cellular senescence, DNA damage, cancer, cognition.

Education: BSc and MA, Ben Gurion University of the Negev, Be'er Sheva

Hometown: Lehavim, Israel

Favorite saying: “You get in life what you have the courage to ask for”

Favorite activities outside the lab: Playing guitar and keys, juggling, pilates

Dream baymate: Chandler Muriel Bing

Birthday: January 11th

Summer Student


Nadav Bruchiel

Nadav Bruchiel

Research interests: Aging, Regenerative medicine, Biochmistry & Biophysics.

Education: Current - BSc, Hebrew University, Jerusalem; AAS Software Engineering - MAMRAM, IDF.

Hometown: Jerusalem, Israel

Favorite saying: "Time is the fire in which we burn".

Favorite activities outside the lab: Poker, Sci-Fi, Metal Music & Coding.

Dream baymate: Lieutenant Commander Data

Birthday: June 3rd

Summer Student

WhatsApp Image 2019-08-09 at 15.20.23

Shay Kinreich

Shay Kinreich

Research interests: genetics, aging.

Education: Current - BSc, Hebrew University, Jerusalem

Hometown: Jerusalem, Israel

Favorite saying: happy to spread happiness

Favorite activities outside the lab: reading, movies, music

Dream baymate: Isaac Asimov

Birthday: October 18th

Animal model


Nothobranchius furzeri

Turquoise killifish (Nothobranchius furzeri)

Research interests: Swimming, eating, mating, aging.

Education: University of life

Hometown: Gonarezhou national park, Zimbabwe 

Favorite saying: "The light that burns twice as bright burns half as long" (Blade Runner)

Favorite activities outside the lab: N/A

Birthday: a couple of months ago


Lev R. Seaton


Undergraduate researcher