Research

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Chester Alper, MD

Chester Alper
Lab:
Alper Laboratory
Research Center:
Dana-Farber/Boston Children’s Cancer and Blood Disorders Center
Program:
Program in Cellular and Molecular Medicine (PCMM)
Department:
Medicine Research
Division
Hematology/Oncology Research
Hospital Title:
Senior Investigator, PCMM
Academic Title:
Professor of Pediatrics, Harvard Medical School
Research Focus Area:
Autoimmunity
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Research Overview

The Alper lab studies the genetics of complex (polygenic) disease in humans, with a focus on autoimmunity, particularly within the genes of the major histocompatibility complex (MHC) of chromosome 6. Many human diseases of unknown origin, but mostly involving immune reactions against the patients’ own tissues, show associations with the MHC. Autoimmune diseases affect over 5% of the U.S. population, represent a major medical and public health challenge and many are rising in incidence at an alarming rate. 

Specifically, Alper and colleagues investigate the relationship between genetic differences in the human MHC with differences in the immune function of a variety of "white blood cells," or leukocytes. Gene products of the human MHC are also sometimes called human leukocyte antigens (HLA), and are major proteins expressed on and within leukocytes. Many of these proteins are used by the body to differentiate "self" from foreign cells, and HLA proteins play a critical role in organ and tissue recognition and rejection after transplantation as well as in detecting foreign pathogens.

Over 100 expressed genes are located within the human MHC. As would be expected for a region that contains genes encoding proteins that help define "self," this region is among the most diverse of the human genome. The Alper lab often studies the blood of donors bearing conserved extended MHC haplotypes (CEHs) to explore control by these genes. Alper and colleagues established the concept of CEHs as a means of understanding the high degree of structural genetic fixity within relatively large stretches (e.g., the MHC) of the human genome. Although the lab has studied the MHC genetics of a number of immune functions and diseases, they are currently focused on four specific areas. These are the genetic mechanisms of autoimmunity—with a particular focus on type 1 diabetes (T1D), immunoglobulin deficiency (particularly IgA deficiency), the role of population admixture in the rising incidence of polygenic disease, and complement.

About Chester Alper

Chester Alper received an MD from Harvard Medical School. He completed an internship and residency at Boston City Hospital.

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Related Laboratory

Alper Laboratory

Please visit the Alper Laboratory to learn more.  

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RELATED RESEARCH CENTER

Dana-Farber/Boston Children’s Cancer and Blood Disorders Center

Dana-Farber/Boston Children's Cancer and Blood Disorders Center is one of the top research centers in the world for pediatric cancers and blood diseases. It brings together laboratory scientists and clinical researchers from Dana-Farber Cancer Institute and Boston Children’s Hospital in a single program. We investigate pediatric cancers and non-malignant blood disorders from every angle—from examining cells under the microscope to tracking the effectiveness of current drug regimens using the most advanced molecular methods—so that we can create better treatments for children seen here and around the world.

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