
LAB
MEMBERS

Faranak Fattahi (PI)
faranak.fattahi@ucsf.edu

Homa Majd (Post-doctoral Fellow)
homa.majd@ucsf.edu
Before joining the Fattahi lab, I did my PhD studying mitochondrial membrane transporters and how they link the metabolic pathways of mitochondria and cytoplasm (you can find out more about it here :) ). I am fascinated by cell metabolism and signaling and I hope to understand them better. I love hiking in national parks, gardening, running and cycling as much as I enjoy reading a book in a chilled cafe.

Mikayla Richter (Post-doctoral Fellow)
mikayla.richter@ucsf.edu
I am a Ph.D graduate student at the University of California, San Francisco pursuing a degree in Pharmaceutical Sciences and Pharmacogenomics. Prior to graduate school, I worked in the pharmaceutical industry focusing on all facets of late stage biologic drug development - formulation, process, manufacturing, device, and patient usability. Now a graduate student in the Pharmaceutical Sciences and Pharmacogenomics PhD program, my interests have expanded to disease modeling and drug discovery. In my free time, I manage my cat’s Instagram: @kingcurtisthecat. Besides pharmaceutical science, I can talk about Curtis and our adventures together for hours.

Ryan Samuel (Post-doctoral Fellow)
ryan.samuel@ucsf.edu
Originally from Virginia, I completed my Bachelor of Science at James Madison University in Biotechnology. Currently, I am a graduate student in the Developmental and Stem Cell Biology Ph.D. program with broad interests in developmental/congenital disorders, stem cell based therapies, and stem cells as a tool to study development. In the Fattahi Lab, I use directed differentiation of human pluripotent stem cells to study the development and function of specific neural crest lineages in health and disease. Outside of the lab, I like to go to the gym, binge Netflix shows with my wife and cat, and explore the beautiful state of California.

Alireza Majd (Post-doctoral Fellow)
alireza.majd@ucsf.edu
I have always admired scientific research since it creates an atmosphere in which questioning is appreciated, and ideas are welcome. It resembles a treadmill on which you continuously solve problems and come up with new ideas, instead of running (also I hate running). In my years as a medical student at Tehran University of Medical Sciences (TUMS) I witnessed how chronic diseases impact our bodies and quality of life. Peripheral neuropathies and gut motility disorders constitute significant public health challenges affecting millions of people and there are no therapies currently available. I am so thrilled to “run” on this scientific treadmill towards solutions for these health problems.

Spencer Nyarady (Research Assistant and Lab Manager)
spencer.nyarady@ucsf.edu
Born and raised in Sacramento, I completed my undergraduate degree in Molecular and Cellular Biology with a neurobiology emphasis at UC Berkeley in 2017. After working at a drug quality control lab in the Santa Fe area for a couple years, I moved back to the Bay Area and joined the Fattahi Lab at the start of 2022. I have broad research interests including cellular development and signaling pathways, gene regulatory networks, and the gut-brain axis, and am currently looking at pursuing a PhD or industry career. I am also a musician, playing violin, guitar, and trumpet for many years, most recently in local SF indie rock bands Commissure and Samson. I spend much of my free time going to live music and concerts, cooking, and walking my dog Nice in parks around the city

Kalyan Sankar (Research Assistant and Lab Manager)
kalyan.sankar@ucsf.edu
I was born in the United States but spent much of my childhood with family in India and moving to different states. I settled in Oregon at 12 years old, and I graduated from University of California, Berkeley with a BS in Microbial Biology and Data Science in 2023. Genetics and human biology is an endlessly fascinating topic to me, and diving deep into neuroscience, developmental biology, and stem cell biology in the Fattahi Lab has been an incredible experience. My projects use stem cell models to perform high throughput analysis of chemical libraries, for toxicology or drug discovery research. I've become proficient with cytometric methods like immunohistochemistry, transcriptomics, and functional assays like calcium imaging. My goal here is to optimize and streamline the use of stem cell derived neurons in high throughput applications.

Evgeniia Pimenova (Associate Specialist)
evgeniia.pimenova@ucsf.edu
I graduated with an MD and PhD in Russia and worked as a pediatric surgeon for 17 years, and I was a teacher for students and residents, as well as being engaged in scientific research. Colorectal pediatric surgery and rehabilitation was my topic for the last 10 years. I always performed scientific research parallel to my clinical practice, because I had a lot of patients with congenital anomalies of the enteric nervous system, as well as spinal cord anomalies, and I think strong fundamental research definitely could improve treatment and management results.
When I decided to switch to a research position, I joined the Fattahi lab. I am happy to be a part of this professional team since December 2023.

Jonathan T. Ramirez (PhD Student, DSCB)
Jonathan.Ramirez@ucsf.edu
I am a PhD candidate in the Developmental and Stem Cell Biology program at UCSF, where I am pioneering machine-learning approaches that integrate multimodal omics and imaging datasets to unravel complex cellular decision-making. Drawing on my hands-on experience with human iPSC culture, synthetic biology tools, and PyTorch model development, I build computational frameworks to predict and process big-data outputs from both molecular and image-based assays. When I'm not training algorithms or pipetting in the lab, you’ll find me tinkering on my 3D printer—often designing custom lab gadgets—and doting on my beloved dogs, who remain my greatest source of inspiration.

Juliana Marques Moriera
juliana.marques@ucsf.edu
I have always seen scientific research as a form of translation— attempting to decipher the complex ‘conversations’ that different systems in our body have with one another. To me, no organ is an island, and the most exciting discoveries happen at the borders where these systems meet. My own journey has been defined by these intersections. During my undergraduate studies in biomedicine in Brazil, I participated in a ‘sandwich’ program at Florida Atlantic University, an experience that first showed me how bridging different perspectives can accelerate discovery. I later returned to Brazil and completed my PhD at the University of São Paulo Medical School, where I studied pituitary biology and congenital hormonal deficiencies. Now, I am thrilled to explore the intersection of the endocrine and enteric nervous systems. Much like my passion for cooking, where I love blending Brazilian and international flavors to create something unique, my goal in the lab is to integrate these two fields to uncover novel pathways for human health.

Nan Xu (Post-doctoral Scholar)
nan.xu@ucsf.edu
Born and raised in China, I came to the United States for college, where I studied genetics and neurobiology at the University of Wisconsin–Madison. I later completed my PhD at Memorial Sloan Kettering Cancer Center in New York, studying stem cell biology and the mechanisms that control developmental timing. After my PhD, I spent a short period working at biotech startups, where I gained experience translating stem cell technologies beyond academia. Fascinated by the complexity of human biology, I now study gene regulatory programs that drive peripheral nervous system development in the Fattahi lab to better understand human development.
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Alumni

Tommy Luong (Visiting Graduate Student)
2023-2024

Nick Elder (Graduate Student)
2020-2025

Lina Afonso (Graduate Student)
2023-2024

Meri Okorie (Graduate Student)
2022-2024

Megan Scantlen (Graduate Student)
2021-2024

Angeline Chemel (Graduate Student)
2021-2024

Aaron Earley (Post-doctoral Fellow)
2022-2023

Sina Farahvashi (Research Assistant and Lab Manager)
2018-2023

Juliana Marques Moriera (Visiting Graduate Student)
2022-2023

Jonathan Ramirez (Research Associate)
2020-2022

Meso Okoye (CIRM Masters Student)
2020-2021

Phi Nguyen (Research Assistant)
2019-2021

Kevin Barber (Research Assistant)
2017-2019
Samyukta Bhat (Research Assistant)
2017-2018
Mehrnaz Namiri (Volunteer)
2017
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