Ragini Phansalkar

ORCID: 0000-0003-3014-1915
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Congenital heart defects research
  • Single-cell and spatial transcriptomics
  • Cancer-related molecular mechanisms research
  • Angiogenesis and VEGF in Cancer
  • Cardiac Fibrosis and Remodeling
  • Signaling Pathways in Disease
  • Cardiomyopathy and Myosin Studies
  • Ocular Surface and Contact Lens
  • Chromosomal and Genetic Variations
  • Psychosomatic Disorders and Their Treatments
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Pituitary Gland Disorders and Treatments
  • Genomics and Phylogenetic Studies
  • Growth Hormone and Insulin-like Growth Factors
  • Adrenal and Paraganglionic Tumors
  • Corneal surgery and disorders
  • Drug-Induced Adverse Reactions
  • Hallucinations in medical conditions
  • Corneal Surgery and Treatments
  • Zebrafish Biomedical Research Applications
  • Glaucoma and retinal disorders
  • Acute Myeloid Leukemia Research
  • Plant Disease Resistance and Genetics
  • Acute Lymphoblastic Leukemia research
  • Cardiovascular Conditions and Treatments

Stanford University
2019-2023

Stanford Medicine
2023

Palo Alto University
2023

University of Connecticut
2012

The Tabula Sapiens Consortium Robert C. Jones Jim Karkanias Mark A. Krasnow Angela Oliveira Pisco and 95 more Stephen R. Quake Julia Salzman Nir Yosef Bryan Bulthaup Philip J. Brown William Harper Marisa Hemenez Ravikumar Ponnusamy Ahmad Salehi Bhavani A. Sanagavarapu Eileen Spallino Ksenia A. Aaron Waldo Concepcion James M. Gardner Burnett S. Kelly Nikole Neidlinger Zifa Wang Sheela Crasta Saroja Kolluru Maurizio Morri Serena Y. Tan Kyle J. Travaglini Chenling Xu Marcela Alcántara‐Hernández Nicole Almanzar Jane Antony Benjamin Beyersdorf Deviana Burhan Kruti Calcuttawala Matthew M. Carter Charles K. F. Chan Charles Chang Stephen Chang Alex Colville Rebecca N. Culver Ivana Cvijović Gaetano D’Amato Camille Ezran Francisco X. Galdos Astrid Gillich William R. Goodyer Yan Hang Alyssa Hayashi Sahar Houshdaran Xianxi Huang Juan C. Irwin SoRi Jang Júlia Vallvé-Juanico Aaron M. Kershner Soochi Kim Bernhard Kiss William Kong Maya E. Kumar Angera H. Kuo Rebecca Leylek Baoxiang Li Gabriel B. Loeb Wan-Jin Lu Sruthi Mantri Maxim Markovic Patrick L. McAlpine Antoine de Morrée Karim Mrouj Shravani Mukherjee Tyler Muser Patrick Neuhöfer Thi D. Nguyen Kimberly Perez Ragini Phansalkar Nazan Puluca Zhen Qi Poorvi Rao Hayley M. Raquer-McKay Nicholas Schaum Bronwyn Scott Bobak Seddighzadeh Joe M. Segal Sushmita Sen Shaheen S. Sikandar Sean P. Spencer L.C. Steffes Varun Ramanan Subramaniam Aditi Swarup Michael Swift Will Van Treuren Emily Trimm Stefan Veizades Sivakamasundari Vijayakumar Kim Chi Vo Sevahn K. Vorperian Wanxin Wang H Weinstein Juliane Winkler Ting-Hsuan Wu Jamie Xie

Molecular characterization of cell types using single-cell transcriptome sequencing is revolutionizing biology and enabling new insights into the physiology human organs. We created a reference atlas comprising nearly 500,000 cells from 24 different tissues organs, many same donor. This enabled molecular more than 400 types, their distribution across tissues, tissue-specific variation in gene expression. Using multiple single donor identification clonal T between mutation rate B cells,...

10.1126/science.abl4896 article EN Science 2022-05-12
Sevahn K. Vorperian Mira N. Moufarrej Robert C. Jones Jim Karkanias Mark A. Krasnow and 95 more Angela Oliveira Pisco Stephen R. Quake Julia Salzman Nir Yosef Bryan Bulthaup Philip J. Brown William Harper Marisa Hemenez Ravikumar Ponnusamy Ahmad Salehi Bhavani A. Sanagavarapu Eileen Spallino Ksenia A. Aaron Waldo Concepcion James M. Gardner Burnett S. Kelly Nikole Neidlinger Zifa Wang Sheela Crasta Saroja Kolluru Maurizio Morri Serena Y. Tan Kyle J. Travaglini Chenling Xu Marcela Alcántara‐Hernández Nicole Almanzar Jane Antony Benjamin Beyersdorf Deviana Burhan Kruti Calcuttawala Matthew M. Carter Charles K. F. Chan Charles Chang Stephen Chang Alex Colville Rebecca N. Culver Ivana Cvijović Gaetano D’Amato Camille Ezran Francisco X. Galdos Astrid Gillich William R. Goodyer Yan Hang Alyssa Hayashi Sahar Houshdaran Xianxi Huang Juan C. Irwin SoRi Jang Júlia Vallvé-Juanico Aaron M. Kershner Soochi Kim Bernhard Kiss William Kong Maya E. Kumar Angera H. Kuo Rebecca Leylek Baoxiang Li Gabriel B. Loeb Wan-Jin Lu Sruthi Mantri Maxim Markovic Patrick L. McAlpine Antoine de Morrée Karim Mrouj Shravani Mukherjee Tyler Muser Patrick Neuhöfer Thi D. Nguyen Kimberly Perez Ragini Phansalkar Nazan Puluca Zhen Qi Poorvi Rao Hayley M. Raquer-McKay Nicholas Schaum Bronwyn Scott Bobak Seddighzadeh Joe M. Segal Sushmita Sen Shaheen S. Sikandar Sean P. Spencer L.C. Steffes Varun Ramanan Subramaniam Aditi Swarup Michael Swift Will Van Treuren Emily Trimm Stefan Veizades Sivakamasundari Vijayakumar Kim Chi Vo Sevahn K. Vorperian Wanxin Wang H Weinstein Juliane Winkler Ting-Hsuan Wu

Abstract Cell-free RNA from liquid biopsies can be analyzed to determine disease tissue of origin. We extend this concept identify cell types origin using the Tabula Sapiens transcriptomic atlas as well individual atlases in combination with Human Protein Atlas consensus dataset. define type signature scores, which allow inference that contribute cell-free for a variety diseases.

10.1038/s41587-021-01188-9 article EN cc-by Nature Biotechnology 2022-02-07

Abstract Aims Non-compaction cardiomyopathy is a devastating genetic disease caused by insufficient consolidation of ventricular wall muscle that can result in inadequate cardiac performance. Despite being the third most common cardiomyopathy, mechanisms underlying disease, including cell types involved, are poorly understood. We have previously shown endothelial cell-specific deletion chromatin remodeller gene Ino80 results defective coronary vessel development leads to non-compaction...

10.1093/eurheartj/ehab298 article EN European Heart Journal 2021-05-16

Most cell fate trajectories during development follow a diverging, tree-like branching pattern, but the opposite can occur when distinct progenitors contribute to same type. During this convergent differentiation, it is unknown if cells ‘remember’ their origins transcriptionally or whether influences behavior. coronary blood vessels of heart develop from two different progenitor sources—the endocardium (Endo) and sinus venosus (SV)—but transcriptional functional differences related origin...

10.7554/elife.70246 article EN cc-by eLife 2021-12-15

Corneal organoids are useful tools for disease modeling and tissue transplantation; however, they have not yet been well studied during maturation. We characterized human iPSC-derived corneal at 1, 2, 3, 4 months of development using single-cell RNA sequencing to determine the cellular heterogeneity each stage. found pluripotent cell clusters committed epithelial lineage 1 month; early epithelial, endothelial, stromal markers 2 months; keratocytes as largest population 3 a large months....

10.1016/j.stemcr.2023.10.022 article EN cc-by-nc-nd Stem Cell Reports 2023-11-30

Teprotumumab has been shown to be effective in the treatment of thyroid eye disease, a potentially vision-threatening condition. Adverse events, including sensorineural hearing loss, have associated with teprotumumab. The authors present case 64-year-old female who discontinued teprotumumab due significant loss after 4 infusions, along other adverse events. patient was unresponsive subsequent course intravenous methylprednisolone and orbital radiation, during which she experienced worsening...

10.1097/iop.0000000000002355 article EN Ophthalmic Plastic and Reconstructive Surgery 2023-03-03

Abstract Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease associated with repetitive head trauma. Brain pathology in CTE characterized by neuronal loss, gliosis, and distinctive pattern of accumulation hyper-phosphorylated tau (p-tau) phospho-TDP43 (p-TDP43). Visual anomalies have been reported patients CTE, but the ocular underlying these symptoms unknown. We evaluated retinal post-mortem eyes collected from 8 contact sport athletes brain autopsy-confirmed stage IV...

10.1186/s40478-023-01650-6 article EN cc-by Acta Neuropathologica Communications 2023-09-22

Abstract Non-compaction cardiomyopathy is a devastating genetic disease caused by insufficient consolidation of ventricular wall muscle that can result in inadequate cardiac performance. Despite being the third most common cardiomyopathy, mechanisms underlying disease, including cell types involved, are poorly understood. We have previously shown endothelial cell-specific deletion chromatin remodeler gene Ino80 results defective coronary vessel development leads to noncompaction embryonic...

10.1101/2020.07.25.220301 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2020-07-26

ABSTRACT Regenerating coronary blood vessels has the potential to ameliorate ischemic heart disease, yet there is currently no method of stimulating clinically effective cardiac angiogenesisis. Endocardial cells— a particularly plastic cell type during development—line lumen and are natural vessel progenitors. Their intrinsic angiogenic lost in adults, but studying endocardial- to-coronary developmental pathway could identify methods re-instating this process diseased hearts. Here, we use...

10.1101/2021.10.25.465773 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2021-10-26

Purpose: This case describes the successful visual restoration of a patient with end-stage Stevens–Johnson syndrome (SJS) severely keratinized ocular surface. Methods: study is report. Results: A 67-year-old man SJS secondary to allopurinol sought rehabilitation options. His surface was compromised from sequelae chronic SJS, leaving him light perception vision bilaterally. The left eye completely severe ankyloblepharon. right had failed penetrating keratoplasty, limbal stem cell deficiency,...

10.1097/ico.0000000000003262 article EN Cornea 2023-04-19

Abstract Coronary artery disease (CAD) is the leading cause of death worldwide, but there are currently no available methods to stimulate growth or regeneration networks in diseased hearts. Studying how arteries built during embryonic development could illuminate strategies for re-building these vessels setting ischemic heart disease. We previously found, using loss-of-function experiments, that transcription factor Dach1 required coronary mouse embryos. Here, we report overexpression...

10.1101/2020.08.07.242164 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2020-08-10

Phansalkar, Ragini PhD; Navarro, Sylvia E. Villarreal MD; Chiang, Homer Moss, Heather MD, PhDEditor(s): Winges, Kimberly M. Gilhooley, Michael J. MA, MB, BChir, DPhil Author Information

10.1097/wno.0000000000001956 article EN Journal of Neuro-Ophthalmology 2023-07-17

Abstract Most cell fate trajectories during development follow a diverging, tree-like branching pattern, but the opposite can occur when distinct progenitors contribute to same type. During this convergent differentiation, it is unknown if cells “remember” their origins transcriptionally or whether influences behavior. coronary blood vessels of heart develop from two different progenitor sources—the endocardium (Endo) and sinus venosus (SV)—but transcriptional functional differences related...

10.1101/2021.04.25.441380 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2021-04-26

Regenerating coronary blood vessels has the potential to ameliorate ischemic heart disease, yet there is currently no method of stimulating clinically effective cardiac angiogenesisis. Endocardial cells— a particularly plastic cell type during development—line lumen and are natural vessel progenitors. Their intrinsic angiogenic lost in adults, but studying endocardialto-coronary developmental pathway could identify methods re-instating this process diseased hearts. Here, we use combination...

10.2139/ssrn.3985169 article EN SSRN Electronic Journal 2021-01-01
Coming Soon ...