THE EXPLORER Journal of USC Student Research
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VOLUME 11, APRIL 2019 Volume 12, April 2020 THE EXPLORER Journal of USC Student Research Herman Ostrow School of Dentistry of USC Herman Ostrow School of Dentistry of USC IN THIS ISSUE 05 38 From the Dean Research Day Abstracts Avishai Sadan, DMD, MBA Dentistry Divsion Faculty Dean Advanced Specialty Program Residents Herman Ostrow School of Dentistry of USC Dental Hygiene Students CBY/PIBBS Graduate Students 07 Dentistry/CCMB Post-Doctoral Fellows Introduction to Undergraduate & DDS Students - Basic Sciences Research Day Undergraduate & DDS Students - Clinical Sciences Yang Chai, DDS, PhD Other Affiliated Dentistry/CCMB Researchers Associate Dean of Research Biokinesology & Physical Therapy Faculty Herman Ostrow School of Dentistry of USC Biokinesology & Physical Therapy PhD Candidates Biokinesology & Physical Therapy PhD Students 34 Other Biokinesology & Physical Therapy Researchers Research Day Occupational Science & Occupational Therapy Faculty Schedule of Events Occupational Science & Occupational Therapy Doctoral Students 35 Occupational Science & Occupational Therapy Post-Doctoral Research Day Fellows Keynote Speakers Occupational Science & Occupational Therapy Professional Steve Kay Students Mariela Padilla James Finley 76 36 From The Editors Poster Category Awards Yeonghee Jung DDS 2020 Teresa Nguyen DDS 2021 78 Research Day Planning Committee Division Articles 08 20 Disassembling the Mystery of Microcephaly Overcoming Obstacles in the Dental Journey Yoojin Kim & Sumi Chung Sepehr Hakakian 10 22 A Bio-Inspired Interface From Lifeguard to for Osseointergration General Practice Residency Professor Mirza Baig & Joseph Leem Abraham Zilberstein 12 24 The Future of Night Guards Looking Deeper into Obstructive Sleep Apnea Ava Pournejad & Sarah To Ana Zapata Caceres & Alex Daneshgar 14 26 The Future of Biomaterials A Case on Oral Pathology: How Viperin Proteins and Digital Dentistry Induce KSHV Helicase Expression Through Catherine Frusetta & Atysha Mohindroo Methionin-401 Oxidation George Simonyan & Sarina Taylor 16 Education Community Health Outreach 28 Started with a Smile Keeping Teeth Plaque Free Since ’73 Brian Jing Brian Song 18 30 Putting Tons of Smiles on Children’s Faces Transformative Care: Craniofacial Orthodontics Jamie Huh & Meredith Messerle Scott Barlow & Shveta Duggal Avishai Sadan, DMD, MBA Dean G. Donald and Marian James Montgomery Professor of Dentistry Herman Ostrow School of Dentistry of USC 5 FROM THE DEAN Dear Ostrow Students and Colleagues: Like nearly every other large in-person event this year, Ostrow’s annual Research Day — typically one of my favorite days of the year — was necessarily canceled due to the ongoing coronavirus crisis. But our intellectual curiosity and the imperative to continue scientific investigation can never be stymied, global pandemic or not. Research is the fuel for our professions, launching us into ever-exciting and sometimes unexpected directions. In fact, to be successful in your careers — whether that be in the dental, biokinesiology/physical therapy or occupational science/occupational therapy professions — you will need an almost insatiable thirst for new knowledge. You must constantly consume new research, learn new technologies and be willing to evolve the way you practice. As part of a research-intensive university, we have always taken research very seriously. We are one of the only schools across the university to have an entire day devoted exclusively to research. In terms of funding, Ostrow has consistently been one of the nation’s top-funded private dental schools by the National Institute of Dental and Craniofacial Research, a remarkable distinction that showcases the trust this agency has in our outstanding research community. Our colleagues at USC Chan currently have more than $22 million in federal research funding, and the USC Division of Biokinesiology and Physical Therapy has secured nearly $7 million in federal research dollars. Even without our in-person Research Day, it was important that we showcased all of the hard work that went into this year’s research posters. I want to congratulate all of our faculty and student researchers for the hard work, long hours and dedication it took to complete these research endeavors. I hope that you will take the time to really peruse this issue of The Explorer — not only to see what your colleagues are studying in your field but also what our colleagues at the USC Chan Division of Occupational Science and Occupational Therapy and the USC Division of Biokinesiology and Physical Therapy are doing to continue strengthening the science undergirding their professions. And while it may be disappointing not to be able to have spirited discussions in person about these discoveries at the Galen Center this year, I am hopeful that we will be back at it very soon. I am also reminded that, if anything, the COVID-19 situation has underscored more than ever before the need to continue learning all we can about the world around us, so that we can prevent (or, at the very least, treat) needless human suffering through the discoveries we make in our labs. Fight On! Avishai Sadan, DMD, MBA Dean G. Donald and Marian James Montgomery Professor of Dentistry Herman Ostrow School of Dentistry of USC INTRODUCTION TO RESEARCH DAY Dear Ostrow Students and Colleagues, Under normal circumstances, we would be welcoming you to the Herman Ostrow School of Dentistry’s annual Research Day at the iconic Galen Center. Research Day is our annual celebration of the tremendous endeavors of our students, staff, and faculty in Dentistry, Occupational Science, Occupational Therapy, Biokinesiology, and Physical Therapy. This is my favorite event of the year because your inspiring work gives us a preview of USC’s impact on addressing societal and health care needs. Although our event was canceled due to the ongoing pandemic, we are proud to present to you all the outstanding projects showcased in this year’s Explorer. It is our privilege as faculty to foster an environment for cutting edge research. Seeing students in our labs and clinics pursue novel research, perform new studies, and help each other are the favorite parts of my job. This year, more than ever, we have witnessed the dedication and resilience of our researchers despite the challenging circumstances during our city’s stay-at-home orders and shutdown. As a major research university, we are grateful to have been able to safely continue research at USC during this pandemic. Your work ethic and perseverance to complete your studies during this unprecedented time inspire all of us. Our supportive culture, which has been especially evident in these past months, makes USC a rich environment for interdisciplinary collaborations. We are committed to providing the best possible opportunities for you. The research experience and clinical training you receive at USC promote critical thinking skills for advancing scientific knowledge. Introducing students to the joys and challenges of research is crucial for innovation and discovery at USC and will ultimately benefit our society. Please enjoy this issue of The Explorer. In these pages you will find very exciting and innovative research abstracts as well as articles highlighting some of our remarkable faculty members at the Herman Ostrow School of Dentistry of USC. To all the researchers represented here: you are the future of our profession, and your outstanding discoveries make it clear that the future is bright. I look forward to celebrating your research accomplishments together in person in the future. Fight on! Yang Chai, DDS, PhD University Professor George and MaryLou Boone Chair in Craniofacial Molecular Biology Associate Dean of Research Director, Center for Craniofacial Molecular Biology Herman Ostrow School of Dentistry of the University of Southern California Herman Ostrow School of Dentistry of USC 7 8 Disassembling the Mystery of Microcephaly Yoojin Kim & Sumi Chung at China Agricultural Univer- In particular, Dr. Zhang studies sity, his research focus was on mutations in the gene WDR62, porcine induced pluripotent which represents the second stem cells (iPSCs). He stud- most common cause of human ied the porcine iPSCs’ long microcephaly. He generated a non-coding ribonucleic acid Wdr62 knockout mouse model molecules (RNAs) and their and WDR62-deficient human significance in transcription- cell line to study the mecha- al regulation, which offered a nism of the gene’s effects. Dr. new perspective on the mech- Zhang was able to discover anisms that control iPSC re- that microcephaly is caused programming. Furthermore, by neural progenitor cell dis- he investigated the important ruption due to a WDR62 mu- role of lipid metabolism in mu- tation and he was able to find rine iPSCs to understand the similarities between mice and mechanisms that underlie em- humans in how these effects bryonic stem cell derivation. manifest. Furthermore, since WDR62 plays a role in centro- Dr. Wei Zhang is a postdoc- To further pursue his dedica- somes and cilia, two important toral research associate in Dr. tion to research, Dr. Zhang parts of a cell’s machinery that Jian-fu Chen’s laboratory at the decided to travel across conti- are involved in cell division Center for Craniofacial Molec- nents to join the Chen lab al- and the regulation of the cell ular Biology (CCMB) on USC’s most three years ago. At USC, cycle, Dr. Zhang focused on Health Sciences Campus. Dr. his work focuses on under- the effects of WDR62 mutations Zhang’s interest in research standing