Current positions of our alumni last updated in August, 2017


Graduate Student Ryan Forster

Ryan Forster

Senior Scientific Researcher in Cell Engineering

Genentech San Francisco, CA.


UC Berkeley Seal   Ph.D. 2018 in MCB and Chemical Biology

   University of California, Berkeley


 National Science Foundation Logo   GRFP Fellow

    National Science Foundation

Arizona State University Seal    B.S. in Molecular Bioscience and Biotechnology

    Arizona State University


Research interests in the lab:

I developed a method for generating human intestinal tissue in vitro that I am using to study the development and pathophysiology of the intestinal epithelium. I use genome engineering in pluripotent stem cells or human biopsy derivatives to generate three-dimensional organoid cultures to model a more complex cellular environment.

Graduate Student Kunitoshi Chiba

Harvard Seal       Post Doctoral Associate

       Elledge Lab Harvard Medical School



UC Berkeley SealKunitoshi Chiba   Ph.D. 2018 in Molecular and Cell Biology

    University of California, Berkeley


   Predoctorl Fellow

   Nakajima Foundation


   Research Coordinating Committee Predoctoral Fellow

   University of California, Berkeley


 Tokyo Institute of Technology Logo  M.Sc.

   Tokyo Institute of Technology


Research interests in the lab:

My current project is understanding transcriptional regulation of telomerase in human pluripotent stem cells. 

Staff Research Associate Samuel Regalado  

University of Washington Logo

Sam Regalado

  M.D. / Ph.D. Student in the Medical Scientist Training Program

   University of Washington


 UC Berkeley Seal  B.A. in Molecular and Cell Biology

   University of California, Berkeley  


Research interests in the lab

I was interested in the mechanisms underlying telomere length regulation in healthy and diseased cells. The goal of my project was to gain key mechanistic insights into crucial components, such as TPP1, that participate in telomere length regulation. 

Graduate Student Joshua Johnson 

UC Berkeley Seal

Joshua Joshnson

    M.A. in Molecular and Cell Biology

    University of California, Berkeley


University of South Carolina Upstate Logo    B.S. in Biology

    University of South Carolina Upstate 





Graduate Student of Collins Lab Alec Sexton, Ph.D.

Yale University Logo   Postdoctoral Associate in Molecular Biophysics and BiochemistryAlec Sexton

    Simon Lab at Yale University


UC Berkeley Seal   Ph.D. in Molecular and Cell Biology

    University of California, Berkeley


Indiana University Logo   B.A. in Biology and French

    Indiana University


Home lab in Berkeley: Collins Lab

Research interests in the Hockemeyer lab:

I was interested in the regulation of telomerase recruitment to telomeres, and the dynamics of proteins at the telomere during recruitment.  I used gene targeting in human ES cells to specifically alter TPP1, a protein involved in this recruitment, to tease out its contributions to telomere maintenance.  


 Graduate Student of Rio Lab George Ghanim

UC Berkeley Seal

   Ph.D. Candidate in Molecular and Cell Biology

George Ghanim

   University of California, Berkeley


 Home lab: Rio Lab

E-mail address:



Postdoctoral Associate Shirin Jenkins, Ph.D

UC Berkeley Seal

   Shirin JenkinsPostdoctoral Scholar in Molecular and Cell Biology

   University of California, Berkeley  


UC Davis Seal

   Ph.D. in Biochemistry, Molecular, Cell and Developmental Biology

   University of California, Davis


UC Berkeley Seal

   B.A. in Molecular and Cell Biology    

   University of California, Berkeley



Postdoctoral Associate Won-Tae Kim, Ph.D.

UC Berkeley Seal


   Postdoctoral Fellow in Molecular and Cell Biology

   University of California, Berkeley


  Postdoctoral Fellow

                           Siebel Stem Cell Institute


Sejong University Seal

   Ph.D. in Stem Cell Biology and Antibody Development

   Sejong University


Sejong University Seal   B.S. in Biology

   Sejong University



Post-Doctoral Scholar of Drubin/Barnes Lab Daphné Dambournet

Home lab: Drubin/Barnes Lab

Daphné Dambournet

E-mail address:






Visiting Scholar Brendan Finnerty

   M. Sc. in Biomedical Science with a concentration in Stem Cell Science

   Advisor: Dr. Dirk Hockemeyer

   San Francisco State University


   Bridges Fellow

   California Institute for Regenerative Medicine


 B.S. in Biology

 University of California, San Diego


Visiting Scholar Alejandro Hernandez Sanchez

Alex SanchezM.Sc. in Molecular Biotechnology

Advisor: Dirk Hockemeyer

Ruprecht Karls University Heidelberg


 B.Sc. in Molecular Biotechnology

Ruprecht Karls University Heidelberg


Visiting Scholar Eva Schruf 

The University of Würzburg Logo

Eva Schruf   M.Sc. in Biomedicine

  Advisor: Dr. Dirk Hockemeyer

   The Julius Maximilians University of Würzburg 






Visiting Scholar Dipl.Biochem. Tina Wagner

Tina Wagner

Eberhard-Karls University Logo   M.Sc. in Biochemistry

   Advisor: Dr. Dirk Hockemeyer

   Eberhard Karls University Tuebingen

Research interests in the Hockemeyer lab:

I investigated the role of epigenetics in the trasncriptional regulation of telomerase.




Visiting Scholar Emma van Grinsven 


  M.S. student in Cancer, Stem Cells, and Developmental Biology

Emma van Grinsven

  Utrecht University



    B.S. in Biology

    Utrecht University


Research interest in the lab:

Studying the molecular mechanism of TIN2 and investigating how TIN2 mutations lead to the telomere-shortening disease Diskeratosis Congenita

E-mail address:


Lab Assistant Leslie Chan

 Lab Assistant Shannon Wu

 Lab Assistant Rachel Trujillo

Lab Assistant Rayyan Aburajab

Lab Assistant Kimberly Tang

Lab Assistant Justin Lu

Undergraduate Researcher Manraj Gill 

Undergraduate Researcher Erica Keane

Undergraduate Researcher Aparaajita Balaji 

Undergraduate Researcher Christian Gonzalez

Lab Assistant Olivia Song 

Lab Assistant Cynthia Martinez

Lab Assistant Annie Lai

Undergraduate Researcher Casey W. Drubin 

Undergraduate Researcher Jimmy Guo

Undergraduate Researcher / Lab Assistant Tiffany Tsan