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"Ansel, Tobin"
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Abstracts from the 15th International Myopia Conference
by
Landis, Erica G.
,
Siegwart, John T.
,
Ghodsi, Ladan
in
Medicine
,
Medicine & Public Health
,
Meeting Abstracts
2016
Table of contents
O1 Changes in peripheral refraction associated with decreased ocular axial growth rate in marmosets
Alexandra Benavente-Perez, Ann Nour, Tobin Ansel, Kathleen Abarr, Luying Yan, Keisha Roden, David Troilo
O2 PPARα activation suppresses myopia development by increasing scleral collagen synthesis--a new drug target to suppress myopia development
Chanyi Lu, Miaozhen Pan, Min Zheng, Jia Qu, Xiangtian Zhou
O3 Evidence and possibilities for local ocular growth regulating signal pathways
Christine F Wildsoet
O4 Myopia researches at Eye Hospital of Wenzhou Medical University
Fan Lu, Xiangtian Zhou, Jie Chen, Jinhua Bao, Liang Hu, Qinmei Wang, Zibing Jin, Jia Qu
O5 Color, temporal contrast and myopia
Frances Rucker, Stephanie Britton, Stephan Hanowsky, Molly Spatcher
O6 The impact of atropine usage on visual function and reading performance in myopic school children in Taiwan
Hui-Ying Kuo, Ching-Hsiu Ke, I-Hsin Kuo, Chien-Chun Peng, Han-Yin Sun
O7 Increased time outdoors prevents the onset of myopia: evidence from randomised clinical trials
Ian G Morgan
O8 Environmental risk factors and gene-environment interactions for myopia in the ALSPAC cohort
Jeremy A. Guggenheim, Rupal L. Shah, Cathy Williams
O9 Retinal metabolic profiling identifies declines in FP receptor-linked signaling as contributors to form-deprived myopic development in guinea pigs
Jinglei Yang, Peter S. Reinach, Sen Zhang, Miaozhen Pan, Wenfeng Sun, Bo Liu, Xiangtian Zhou
O10 The study of peripheral refraction in moderate and high myopes after one month of wearing orthokeratology lens
Jun Jiang, Haoran Wu, Fan Lu
O11 Axial length of school children around the earth’s equatorial area and factors affecting the axial length
Kazuo Tsubota, Hiroko Ozawa, Hidemasa Torii, Shigemasa Takamizawa, Toshihide Kurihara, Kazuno Negishi
O12 Processing of defocus in the chicken retina by retinal ganglion cells
Klaus Graef, Daniel Rathbun, Frank Schaeffel
O13 Blue SAD light protects against form deprivation myopia in chickens, by local signaling within the retina
Ladan Ghodsi, William K. Stell
O14 Contributions of ON and OFF pathways to emmetropization and form deprivation myopia in mice
Machelle T. Pardue, Ranjay Chakraborty, Han na Park, Curran S. Sidhu, P. Michael Iuvone
O15 Response of the human choroid to defocus
Michael J Collins
O16 What can RNA sequencing tell us about myopic sclera?
Nethrajeith Srinvasalu, Sally A McFadden, Paul N Baird
O17 Overview of dopamine, retinal function, and myopia
P. Michael Iuvone
O18 The eye as a \"robust\" optical system and myopia
Pablo Artal
O19 Effect of discontinuation of orthokeratology lens wear on axial elongation in children
Pauline Cho, SW Cheung
O20 Myopia prevention in Taiwan
Pei-Chang Wu
O21 Alternatives to ultraviolet light and riboflavin for in vivo crosslinking of scleral collagen
Quan V. Hoang, Sally A. McFadden
O22 Absence of intrinsically photosensitive retinal ganglion cells (ipRGC) alters normal refractive development in mice
Ranjay Chakraborty, Duk C. Lee, Erica G. Landis, Michael A. Bergen, Curran Sidhu, Samer Hattar, P. Michael Iuvone, Richard A. Stone, Machelle T. Pardue
O23 Scleral micro-RNAs in myopia development and their potential as therapeutic targets
Ravi Metlapally
O24 Effects of the long-wavelength filtered continuous spectrum on emmetropization in juvenile guinea pigs
Ruiqin Li, Qinglin Xu, Hong Zhon, Chenglin Pan, Weizhon Lan, Xiaoning Li, Ling Chen, Zhikuan Yang
O25 Ocular and environmental factors associated with eye growth in childhood
Scott A. Read
O26 Overview- prevention and prediction of myopia and pathologic myopia
Seang-Mei Saw
O27 New insights into the roles of retinal dopamine in form-deprivation myopia and refractive development in C57BL/6 mice
Shi-Jun Weng, Xiao-Hua Wu, Kang-Wei Qian, Yun-Yun Li, Guo-Zhong Xu, Furong Huang, Xiangtian Zhou, Jia Qu, Xiong-Li Yang, Yong-Mei Zhong
O28 The effects of the adenosine antagonist, 7-methylxanthine, on refractive development in rhesus monkeys
Earl L Smith III, Baskar Arumugam, Li-Fang Hung, Lisa A. Ostrin, Klaus Trier, Monica Jong, Brien A. Holden
O29 Application of SWATH™ based next generation proteomics (NGP) in studying eye growth: opportunities and challenges
Thomas Chuen Lam, Bing Zuo, Samantha Shan, Sally A. McFadden, Dennis Yan-yin Tse, Jingfang Bian, King-Kit Li, Quan Liu, Chi-ho To
O30 How could emmetropization make use of longitudinal chromatic aberration?
Timothy J. Gawne, John T. Siegwart Jr., Alexander H. Ward, Thomas T. Norton
O31 Balance effect of dopamine D1 and D2 receptor subtype activation on refraction development
Xiangtian Zhou
O32 BMP gene expression changes in chick rpe in response to visual manipulations
Yan Zhang, Yue Liu, Carol Ho, Eileen Phan, Abraham Hang, Emily Eng, Christine Wildsoet
Journal Article
Abstracts from the 15th International Myopia Conference
by
Timothy J. Gawne
,
Stephanie Britton
,
Fan Lu
in
Conferences and conventions
,
Meeting Abstracts
,
Myopia
2016
Table of contents O1 Changes in peripheral refraction associated with decreased ocular axial growth rate in marmosets Alexandra Benavente-Perez, Ann Nour, Tobin Ansel, Kathleen Abarr, Luying Yan, Keisha Roden, David Troilo O2 PPAR[alpha] activation suppresses myopia development by increasing scleral collagen synthesis--a new drug target to suppress myopia development Chanyi Lu, Miaozhen Pan, Min Zheng, Jia Qu, Xiangtian Zhou O3 Evidence and possibilities for local ocular growth regulating signal pathways Christine F Wildsoet O4 Myopia researches at Eye Hospital of Wenzhou Medical University Fan Lu, Xiangtian Zhou, Jie Chen, Jinhua Bao, Liang Hu, Qinmei Wang, Zibing Jin, Jia Qu O5 Color, temporal contrast and myopia Frances Rucker, Stephanie Britton, Stephan Hanowsky, Molly Spatcher O6 The impact of atropine usage on visual function and reading performance in myopic school children in Taiwan Hui-Ying Kuo, Ching-Hsiu Ke, I-Hsin Kuo, Chien-Chun Peng, Han-Yin Sun O7 Increased time outdoors prevents the onset of myopia: evidence from randomised clinical trials Ian G Morgan O8 Environmental risk factors and gene-environment interactions for myopia in the ALSPAC cohort Jeremy A. Guggenheim, Rupal L. Shah, Cathy Williams O9 Retinal metabolic profiling identifies declines in FP receptor-linked signaling as contributors to form-deprived myopic development in guinea pigs Jinglei Yang, Peter S. Reinach, Sen Zhang, Miaozhen Pan, Wenfeng Sun, Bo Liu, Xiangtian Zhou O10 The study of peripheral refraction in moderate and high myopes after one month of wearing orthokeratology lens Jun Jiang, Haoran Wu, Fan Lu O11 Axial length of school children around the earth's equatorial area and factors affecting the axial length Kazuo Tsubota, Hiroko Ozawa, Hidemasa Torii, Shigemasa Takamizawa, Toshihide Kurihara, Kazuno Negishi O12 Processing of defocus in the chicken retina by retinal ganglion cells Klaus Graef, Daniel Rathbun, Frank Schaeffel O13 Blue SAD light protects against form deprivation myopia in chickens, by local signaling within the retina Ladan Ghodsi, William K. Stell O14 Contributions of ON and OFF pathways to emmetropization and form deprivation myopia in mice Machelle T. Pardue, Ranjay Chakraborty, Han na Park, Curran S. Sidhu, P. Michael Iuvone O15 Response of the human choroid to defocus Michael J Collins O16 What can RNA sequencing tell us about myopic sclera? Nethrajeith Srinvasalu, Sally A McFadden, Paul N Baird O17 Overview of dopamine, retinal function, and myopia P. Michael Iuvone O18 The eye as a \"robust\" optical system and myopia Pablo Artal O19 Effect of discontinuation of orthokeratology lens wear on axial elongation in children Pauline Cho, SW Cheung O20 Myopia prevention in Taiwan Pei-Chang Wu O21 Alternatives to ultraviolet light and riboflavin for in vivo crosslinking of scleral collagen Quan V. Hoang, Sally A. McFadden O22 Absence of intrinsically photosensitive retinal ganglion cells (ipRGC) alters normal refractive development in mice Ranjay Chakraborty, Duk C. Lee, Erica G. Landis, Michael A. Bergen, Curran Sidhu, Samer Hattar, P. Michael Iuvone, Richard A. Stone, Machelle T. Pardue O23 Scleral micro-RNAs in myopia development and their potential as therapeutic targets Ravi Metlapally O24 Effects of the long-wavelength filtered continuous spectrum on emmetropization in juvenile guinea pigs Ruiqin Li, Qinglin Xu, Hong Zhon, Chenglin Pan, Weizhon Lan, Xiaoning Li, Ling Chen, Zhikuan Yang O25 Ocular and environmental factors associated with eye growth in childhood Scott A. Read O26 Overview- prevention and prediction of myopia and pathologic myopia Seang-Mei Saw O27 New insights into the roles of retinal dopamine in form-deprivation myopia and refractive development in C57BL/6 mice Shi-Jun Weng, Xiao-Hua Wu, Kang-Wei Qian, Yun-Yun Li, Guo-Zhong Xu, Furong Huang, Xiangtian Zhou, Jia Qu, Xiong-Li Yang, Yong-Mei Zhong O28 The effects of the adenosine antagonist, 7-methylxanthine, on refractive development in rhesus monkeys Earl L Smith III, Baskar Arumugam, Li-Fang Hung, Lisa A. Ostrin, Klaus Trier, Monica Jong, Brien A. Holden O29 Application of SWATH[TM] based next generation proteomics (NGP) in studying eye growth: opportunities and challenges Thomas Chuen Lam, Bing Zuo, Samantha Shan, Sally A. McFadden, Dennis Yan-yin Tse, Jingfang Bian, King-Kit Li, Quan Liu, Chi-ho To O30 How could emmetropization make use of longitudinal chromatic aberration? Timothy J. Gawne, John T. Siegwart Jr., Alexander H. Ward, Thomas T. Norton O31 Balance effect of dopamine D1 and D2 receptor subtype activation on refraction development Xiangtian Zhou O32 BMP gene expression changes in chick rpe in response to visual manipulations Yan Zhang, Yue Liu, Carol Ho, Eileen Phan, Abraham Hang, Emily Eng, Christine Wildsoet
Journal Article
Discovery of stimulation-responsive immune enhancers with CRISPR activation
2017
The authors use tiled CRISPR activation for functional enhancer discovery across two autoimmunity risk loci,
CD69
and
IL2RA
, and identify elements with features of stimulus-responsive enhancers, including an
IL2RA
enhancer that harbours a fine-mapped autoimmunity risk variant.
CRISPRa mapping of enhancer functions
Enhancers are gene regulatory elements that shape cell-type-specific transcriptional programs and responses to specific extracellular cues. Mapping enhancer function is challenging because of our limited understanding of the cellular context in which each enhancer contributes to gene regulation. Here, Alexander Marson and colleagues use a tiled CRISPR activation (CRISPRa) approach for functional enhancer discovery across two autoimmunity risk loci: CD69 and IL2RA. They identify several elements with features of stimulus-responsive enhancers, including an IL2RA enhancer that contains an autoimmunity risk variant. This approach should be useful for discovering functional enhancers without prior knowledge of their specific biological context.
The majority of genetic variants associated with common human diseases map to enhancers, non-coding elements that shape cell-type-specific transcriptional programs and responses to extracellular cues
1
,
2
,
3
. Systematic mapping of functional enhancers and their biological contexts is required to understand the mechanisms by which variation in non-coding genetic sequences contributes to disease. Functional enhancers can be mapped by genomic sequence disruption
4
,
5
,
6
, but this approach is limited to the subset of enhancers that are necessary in the particular cellular context being studied. We hypothesized that recruitment of a strong transcriptional activator to an enhancer would be sufficient to drive target gene expression, even if that enhancer was not currently active in the assayed cells. Here we describe a discovery platform that can identify stimulus-responsive enhancers for a target gene independent of stimulus exposure. We used tiled CRISPR activation (CRISPRa)
7
to synthetically recruit a transcriptional activator to sites across large genomic regions (more than 100 kilobases) surrounding two key autoimmunity risk loci,
CD69
and
IL2RA
. We identified several CRISPRa-responsive elements with chromatin features of stimulus-responsive enhancers, including an
IL2RA
enhancer that harbours an autoimmunity risk variant. Using engineered mouse models, we found that sequence perturbation of the disease-associated
Il2ra
enhancer did not entirely block
Il2ra
expression, but rather delayed the timing of gene activation in response to specific extracellular signals. Enhancer deletion skewed polarization of naive T cells towards a pro-inflammatory T helper (T
H
17) cell state and away from a regulatory T cell state. This integrated approach identifies functional enhancers and reveals how non-coding variation associated with human immune dysfunction alters context-specific gene programs.
Journal Article
Author Correction: Discovery of stimulation-responsive immune enhancers with CRISPR activation
by
Simeonov, Dimitre R.
,
Bluestone, Jeffrey A.
,
Ye, Chun J.
in
631/208/200
,
631/250/2502/2170
,
631/250/2502/248
2018
In this Letter, analysis of steady-state regulatory T (Treg) cell percentages from Il2ra enhancer deletion (EDEL) and wild-type (WT) mice revealed no differences between them (Extended Data Fig. 9d). This analysis included two mice whose genotypes were incorrectly assigned. Even after correction of the genotypes, no significant differences in Treg cell percentages were seen when data across experimental cohorts were averaged (as was done in Extended Data Fig. 9d). However, if we normalize the corrected data to account for variation among experimental cohorts, a subtle decrease in EDEL Treg cell percentages is revealed and, using the corrected and normalized data, we have redrawn Extended Data Fig. 9d in Supplementary Fig. 1. The Supplementary Information to this Amendment contains the corrected and reanalysed Extended Data Fig. 9d. The sentence “This enhancer deletion (EDEL) strain also had no obvious T cell phenotypes at steady state (Extended Data Fig. 9).” should read: “This enhancer deletion (EDEL) strain had a small decrease in the percentage of Treg cells (Extended Data Fig. 9).”. This error does not affect any of the main figures in the Letter or the data from mice with the human autoimmune-associated single nucleotide polymorphism (SNP) knocked in or with a 12-base-pair deletion at the site (12DEL). In addition, we stated in the Methods that we observed consistent immunophenotypes of EDEL mice across three founders, but in fact, we observed consistent phenotypes in mice from two founders. This does not change any of our conclusions and the original Letter has not been corrected.
Journal Article