Matteo A Avella, PhD
Principal Investigator – Assistant Level
Laboratory of Reproductive Biology
- Email: mavella (@) sidra.org
- Phone: +974 40037353
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Dr. Matteo Avella is a Principal Investigator in the Division of Maternal and Child Health at Sidra Medicine and is head of the Lab of Reproductive Biology.
Prior to joining Sidra Medicine, Dr. Avella was an Assistant Professor in the Department of Biological Science at the University of Tulsa (Tulsa, OK, USA) and the School of Health Professions at Eastern Virginia Medical School (Norfolk, VA, USA).
Dr. Avella received his B.A. in Biology from the University of Milan, Bicocca (Italy). He then completed a Ph.D. at the Polytechnic University of Marche (Ancona, Italy), studying the intestinal microbiota’s effects on fish’s early development and reproduction. He conducted postdoctoral research at the National Institutes of Health (Bethesda, USA), where he switched his studies to the mammalian system and focused his research efforts on understanding the molecular mechanisms regulating fertilization in mice and humans. Before his first academic appointment at the University of Tulsa, Dr. Avella received training as a human embryologist at Shady Grove Fertility (Chesterbrook, PA, USA).
Dr. Avella’s lab investigates the mechanisms regulating gamete interactions, fertilization, and early embryonic development. A series of carefully orchestrated molecular events ensures monospermic fertilization, essential for successful embryonic development and a healthy pregnancy outcome. First, a species-specific gamete recognition at the zona pellucida, the extracellular matrix surrounding mammalian oocytes, mediates sperm binding and penetration through the zona. After penetration, the sperm reach the perivitelline space, which is enclosed between the zona’s inner aspect and the egg plasma membrane. Here, a second taxon-specific gamete recognition process occurs before gamete fusion. After fertilization, molecular changes in the zona pellucida and the oolemma establish effective blocks to polyspermy.
In collaboration with the Division of Genetics and the IVF program, we use next-generation sequencing to identify novel genes or variants in infertile patients from the Qatari population. In our lab, we use different model systems (e.g., zebrafish, mouse, and cell lines) to functionally characterize such variants or genes. In addition, we translate our discoveries to establish novel assays for assisted reproductive technologies.
A precise characterization of the mechanisms regulating reproduction is instrumental in providing targeted fertility treatments to people requiring assisted reproductive technologies in Qatar.
A postdoctoral position is available to study the mechanisms controlling gamete interaction at fertilization.
To apply, please visit the Sidra Careers website: https://fa-epxn-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/1213
Selected publications (†co-first, *corresponding):
- Greer C, Bhakta HH, Ghanem L, Refai FH, Linn E, Avella MA*. Deleterious variants in genes regulating mammalian reproduction in Neanderthals, Denisovans, and extant humans. Hum Reprod 2021, 18;36(3):734-755.
- Bhakta HH, Refai FH, Avella MA*. The molecular mechanisms mediating mammalian fertilization. Development 2019; 146 (15).
- Avella MA, Baibakov B, Jimenez-Movilla M, Burkart A and Dean J. ZP2 peptide-beads select human sperm in vitro, decoy mouse sperm in vivo and provide reversible contraception. Sci Transl Med 2016; 336: 336ra60.