Stacey Baptiste, B.S.
Leah Batkiewicz, M.Phil
Hina Chaudhry M.D
Richard Cheng, B.S.
Sanny S. Chung, Ph.D.
Kristin Gunderson, B.S.
Ayesha Joshi, Ph.D.
Chaoling Kuo, M.S.
Karen Lele, M.Phil.
Christopher Marshall, B.A.
Roberto Neisa, B.S.
Nikolaos A. Papanikolaou, Ph.D
Glicella Salazar, B.S.
Enyuan Shang, M. Phil.
Xiangyuan Wang, M.D.
Ayesha F. Cheema, M.D.

Stacey Baptiste, B.S.
I am a post-baccalaureate student investigating the expression of cyclin A1 in mouse brain, using several transgenic reporter lines and direct assessment of cyclin A1 protein.

B.S. Long Island University 

 

 


Leah Batkiewicz, M. Phil
I am a Ph.D student in the Institute of Human Nutrition. Elevated levels of cyclin A1 have been seen in several leukemic cell lines and in leukemic patients. Previous work done in our lab has shown that transgenic mice overexpressing cyclin A1 (under the control of the human cathepsin G promoter) exhibited altered myelopoiesis. As such, it is of interest to examine whether or not cyclin A1 is necessary for normal hematopoiesis. In addition, I am identifying proteins that interact with cyclin A1 in leukemic cells.

B.S. Penn State University
M.Phil. Columbia University


hinaHina Chaudhry, M.D.
I am a Florence Irving Assistant Professor of Medicine at Columbia University Medical Center and have been awarded an NIH clinical scientist research grant  to investigate the function of cyclin A2, a cell cycle regulator, in cardiac development. Cardiomyocyte death with the ensuing loss of cardiac pump function is noted in many forms of cardiovascular disease.  This decline of cardiovascular function might be partially abated if the surviving myocardium retained even a limited ability to proliferate. In mammalian hearts, cardiomyocytes proliferate throughout fetal development and into the early neonatal period.  In the neonatal heart, DNA replication declines quickly and cardiomyocyte division ceases. Therefore, in adulthood, cardiac tissue cannot regenerate after injury such as myocardial infarction.  A thorough understanding of the mechanisms of this process may potentiate therapeutic strategies for cardiomyocyte regeneration. Cell cycle progression in both normal and cancer cells is regulated by the expression of cyclins and the activation of their associated Cdks.  I have chosen to focus my research efforts on the role of cyclin A2 in cardiac development and disease.

B.S. Massachusetts Institute of Technology
M.D. Harvard University


Richard Cheng, B.S.
I am a medical student at Columbia currently completing a year of research funded by the American Heart Association Heritage Affiliate. I am working with Dr. Chaudhry on the role of cyclin A2 in cardiac development, disease, and potential repair.

B.S. UCLA

 



Sanny S. Chung, Ph.D.
I am an Associate Research Scientist directing germ cell research in our group. I am interested in understanding the mechanisms involved in the progression of mammalian spermatogenic germ cells into spermatozoa in the seminiferous tubules at the molecular and developmental level.  I am currently identifying target genes for the retinoid-signaling pathway during spermatogenesis using the retinoid receptor knockout mouse model and designing constructs for rescuing their testicular phenotype.


B.S. The University of Hong Kong
Ph.D. The University of Hong Kong



Kristin Gunderson, B.S.
I am our group's administrative assistant. With an undergraduate background in psychology, I am working toward admission to medical school.

B.S. The University of Georgia

 




joshiAyesha Joshi, Ph.D
I am a post-doctoral fellow in the germ cell group. I am studying the role of cyclin A1 in meiotic cell cycles in the male germ cells and trying to identify the differences between cyclin A1 and cyclin A2 with respect to their substrate specificities.

 

 

B.S. The University of Pune, Pune, India
Ph.D. The Indian Institute of Science, Bangalore, India


kuoChaoling Kuo, M.S.
I am studying the Brd2 gene, a gene which is related to juvenile myoclonic epilepsy (JME), with our collaborators from the School of Public Health and graduate student Enyuan Shang. Currently, I am examining the expression of Brd2 in the brain and the Brd2 allelic imprinting. I also work on studying the kinase activity of cyclin A1 and A2.

 

B.S. National Cheng-Kung University, Taiwan
M.S. Institute of Human Nutrition, Columbia University


karenKaren Lele, M. Phil.

I am a Ph.D. student in the Institute for Human Nutrition. I am studying mechanisms that control Ccna1 gene expression. A molecular genetic approach is used to identify first, cis-acting DNA sequences responsible for expression of reporter constructs in transgenic mice, then putative DNA binding proteins for these elements. I am also characterizing the effects of a mutation in CCNA1 that is associated with infertility on the biochemical properties of cyclin A1 protein.

B.S. University of Connecticut
M.A., 0M.Phil. Institute of Human Nutrition, Columbia University


christopherChristopher Marshall, B.A.

I am our lab's Senior Technician and Lab Manager.

B.A. Dartmouth College


neisaRoberto Neisa, B.S.
I am pursuing a Ph.D. in the Integrated Program in Cellular, Molecular, and Biophysical Studies. I am investigating the significance of the subcellular localization of cyclin A1 in the leukemia cells.

B.S. Brown University
M.A. Columbia University

 


nikolaosNikolaos A. Papanikolaou, Ph.D
I am an Associate Research Scientist in our group. I am studying the function of murine and human cyclin A1 in the germ cell lineage of mice and in acute leukemias. Specifically, I am interested in elucidating the mechanism(s) by which cyclin A1 regulates the meiotic cell cycle in the mouse and its role in human leukemogenesis. To do this, I study sub-cellular localization of cyclin A1 and using biochemical approaches, analyzing its function by identifying its intracellular partners in both the mouse and in human cell lines, this involves (i) overexpressing fusion cyclin A1 proteins in mammalian cells and (ii) purifying and characterizing native complexes from these cells, and (iii) using the yeast two-hybrid method to identify physiological partners in the mouse germ line and in human myeloid malignancies.

Ph.D. New York Medical College


enyuanEnyuan Shang, M. Phil.
I am a graduate student in the Nutrition Program at Columbia University Medical Center. I am currently working on BRDT and BRD2, two genes in a family of genes with two bromodomains and one ET domain. BRDT is expressed specificially in spermatocytes in testis and has a role in male meiosis. BRD2 is expressed ubiquitously and is a candidate gene for Juvenile Myoclonic Epilepsy.

B.S. University of Science and Technology of China
M.S. Kunming Institute of Zoology, Chinese Academy of Sciences
M.Phil. Columbia University 


gliecellaGlicella Salazar, B.S.
I am a Staff Associate in our group.I am interested in studying the pathway/mechanism of the apoptosis involved in spermatogenesis.   I am currently studying the developmental expression andfunction of the Brd4 bromodomain protein during spermatogenesis and oogenesis in mouse model. I will enter the Ph.D. program at Albert Einstein this fall.

B.S. Ricardo Palma University, Lima-Peru 

 

 


xiangyuanXiangyuan Wang, M.D.
I am a Research Worker in our lab. My responsibilities include histology work and microinjecting DNA into fertilized mouse egg to generate transgenic mice for our lab. I also participate collaboration on mRad (Howard Lieberman) and Six1 (Heide Ford). I am also studying the developmentally sensitive periods of vestibular differentiation and function by using tilted and head tilted mutant mouse as a model of microgravity.  

M.D. from Nanjing Railway Medical College in China


Ayesha F. Cheema, M.D.

I am a Post-doctoral Research Scientist. I am working with Dr. Chaudhry on a project focusing on Cardiomyocyte cell cycle control in human heart failure patients.

M.D. Allama Iqbal Medical College, Pakistan
B.Sc Punjab University, Pakistan
F.Sc Kinnaird College, Pakistan
Matriculation Convent of Jesus & Mary, Pakistan