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HEALTHCARE | Medical Facilities & Services / Medical Laboratories & Research
icahn.mssm.edu

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Founded Year

1963

Stage

Grant - II | Alive

Total Raised

$1.5M

Last Raised

$1M | 2 yrs ago

About Icahn School of Medicine at Mount Sinai

Icahn School of Medicine at Mount Sinai specializes in medical and scientific training, biomedical research and patient care.

Icahn School of Medicine at Mount Sinai Headquarter Location

1 Gustave L. Levy Place

New York, New York, 10029,

United States

212-241-6500

Latest Icahn School of Medicine at Mount Sinai News

Can a human microglial atlas guide brain disorder research?

Jan 6, 2022

Certain subtle differences in DNA sequences are known to raise the chances a person may develop Alzheimer’s or Parkinson’s disease. Some of these differences may work by altering the genetic activity of microglia, the brain’s immune cells. Those are just a few of the findings from a study led by scientists at the Icahn School of Medicine at Mount Sinai. Credit: Courtesy of Raj and de Witte labs, Mount Sinai, N.Y., N.Y. Certain subtle differences in DNA sequences are known to raise the chances a person may develop Alzheimer’s or Parkinson’s disease. Some of these differences may work by altering the genetic activity of microglia, the brain’s immune cells. Those are just a few of the findings from a study led by scientists at the Icahn School of Medicine at Mount Sinai. The researchers analyzed thousands of microglia from different brain regions of deceased patients who had been diagnosed with a variety of neuropsychiatric and neurodegenerative disorders. Their results, published in Nature Genetics, support the idea that microglia may play critical roles in some cases of brain disease while also providing a potentially valuable guide for future studies. The study was led by Katia de Paiva Lopes, PhD, Gijsje Snijders, MD, PhD, and Jack Humphrey, PhD, working in the laboratories of Towfique Raj, PhD, Associate Professor of Neuroscience, and Lotje D. De Witte, MD, PhD, Assistant Professor of Psychiatry at Icahn Mount Sinai. Shaped like octopi, microglia can be found sprinkled throughout the brain. For nearly a century after they were first spotted, scientists thought that these cells served as both the brain’s infection-fighting immune system and clean-up crew. They also thought that microglia strictly played a reactive, rather than causative, role in brain disorders. Recently this view has started to change. For instance, experiments in rodents have shown that microglia may actively shape how the brain is wired. Meanwhile, genomic studies identified potential links between microglia and the risk that certain DNA sequences are associated with developing several brain disorders, including Alzheimer’s disease and multiple sclerosis. However, tying these results to specific genes has proved elusive. In this study, scientists used advanced genomic techniques to take an in-depth look at the many roles that microglia may play in the brain. To do this, they created the largest and most thorough high-resolution microglial genomic atlas of its kind. Microglia were extracted from samples of human brain tissue and then underwent a series of gene activity experiments. A total of 255 samples representing four different brain regions were obtained from 100 donors, who were part of the Netherlands Brain Bank and the Neuropathology Brain Bank Research CoRE at The Mount Sinai Hospital. The average donor was about 73 years old, spanning a range of 21 to 103 years of age. Ninety-six samples came from control donors whereas the rest came from donors who had been diagnosed with a neurological or psychiatric disorder. Overall, the results both supported previous findings and made new discoveries. For example, microglia gene activity changed with age or in different brain regions, reinforcing the idea that the roles microglia play can vary throughout the brain and at different stages of life. Moreover, aging appeared to alter primarily the activity of genes associated with the immune system. The results strengthened the evidence that microglia may be linked to some cases of Alzheimer’s and Parkinson’s diseases while also finding links to other disorders, including multiple sclerosis, schizophrenia, and bipolar disorder. Finally, the researchers identified two new genes that may be associated with brain disorders. One gene, called USP6NL, was associated with Alzheimer’s disease while the other one, called P2RY12, was associated with Parkinson’s disease. According to the authors, these results support the idea that the atlas provides the kind of comprehensive guide needed to fully understand the roles microglia may play under healthy and disease states. Who: Towfique Raj, PhD, Associate Professor of Neuroscience, and Genetics and Genomic Sciences; Lotje D. De Witte, MD, PhD, Assistant Professor of Psychiatry at Icahn Mount Sinai. This study was supported by the National Institutes of Health (AG063130, AG054005, AG068880, AG065926, AG055824, NS116006, and OD026880); the High Performance Computing group at the Icahn School of Medicine at Mount Sinai; ZonMw – The Netherlands Organization for Health Research and Development; “De Drie Lichten” Foundation (Netherlands); Fundación Ramón Areces (Spain). Article de Pavia Lopes, K.; Snijders, G. J. L.; Humphrey, J. et al., Genetic analysis of the human microglia transcriptome across brain regions, aging and disease pathologies. Nature Genetics, January 6, 2022, DOI: 10.1038/s41588-021-00976-y About the Mount Sinai Health System The Mount Sinai Health System is New York City’s largest academic medical system, encompassing eight hospitals, a leading medical school, and a vast network of ambulatory practices throughout the greater New York region. Mount Sinai advances medicine and health through unrivaled education and translational research and discovery to deliver care that is the safest, highest-quality, most accessible and equitable, and the best value of any health system in the nation. The Health System includes approximately 7,300 primary and specialty care physicians; 13 joint-venture ambulatory surgery centers; more than 415 ambulatory practices throughout the five boroughs of New York City, Westchester, Long Island, and Florida; and more than 30 affiliated community health centers. The Mount Sinai Hospital is ranked on U.S. News & World Report’s “Honor Roll” of the top 20 U.S. hospitals and is top in the nation by specialty: No. 1 in Geriatrics and top 20 in Cardiology/Heart Surgery, Diabetes/Endocrinology, Gastroenterology/GI Surgery, Neurology/Neurosurgery, Orthopedics, Pulmonology/Lung Surgery, Rehabilitation, and Urology. New York Eye and Ear Infirmary of Mount Sinai is ranked No. 12 in Ophthalmology. Mount Sinai Kravis Children’s Hospital is ranked in U.S. News & World Report’s “Best Children’s Hospitals” among the country’s best in four out of 10 pediatric specialties. The Icahn School of Medicine is one of three medical schools that have earned distinction by multiple indicators: ranked in the top 20 by U.S. News & World Report’s “Best Medical Schools,” aligned with a U.S. News & World Report “Honor Roll” Hospital, and No. 14 in the nation for National Institutes of Health funding. Newsweek’s “The World’s Best Smart Hospitals” ranks The Mount Sinai Hospital as No. 1 in New York and in the top five globally, and Mount Sinai Morningside in the top 20 globally. For more information, visit https://www.mountsinai.org or find Mount Sinai on Facebook,  Twitter  and YouTube. ###

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Icahn School of Medicine at Mount Sinai Patents

Icahn School of Medicine at Mount Sinai has filed 324 patents.

The 3 most popular patent topics include:

  • Transcription factors
  • Clusters of differentiation
  • Immunology
patents chart

Application Date

Grant Date

Title

Related Topics

Status

3/20/2015

1/4/2022

Allergology, Immunology, Immune system, Food allergies, Immunologic tests

Grant

Application Date

3/20/2015

Grant Date

1/4/2022

Title

Related Topics

Allergology, Immunology, Immune system, Food allergies, Immunologic tests

Status

Grant

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