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Cloning the human major histocompatibility complex in YACs
H Abderrahim1, J L Sambucy, F Iris
1Fondation Jean Dausset, CEPH, Paris, France.
Genomics
|October 1, 1994
Summary
Researchers cloned the human major histocompatibility complex (MHC) using Yeast Artificial Chromosomes (YACs). This created the first YAC contig spanning the entire MHC, aiding gene isolation.
Area of Science:
- Genomics
- Human Genetics
- Molecular Biology
Background:
- The human major histocompatibility complex (MHC) is a crucial genomic region for immune function.
- Previous efforts to clone the entire MHC region were unsuccessful due to its large size and complexity.
- Understanding the MHC is vital for immunology and disease research.
Purpose of the Study:
- To construct a comprehensive physical map of the human MHC region.
- To develop the first Yeast Artificial Chromosome (YAC) contig spanning the entire MHC.
- To facilitate the isolation and characterization of all genes within the MHC.
Main Methods:
- Isolation and characterization of 53 YACs from the CEPH YAC library, averaging 490 kb in size.
- Assembly of YACs into a large contig exceeding 4000 kb.
- Detailed physical mapping of the HLA class I region using partial and total digestions of 15 YACs (2000 kb).
Main Results:
- A single, large contig of YACs covering over 4000 kb was established, encompassing the entire MHC.
- A complete physical map of the previously uncloned HLA class I region was generated.
- The first YAC contig spanning the complete human MHC was successfully constructed.
Conclusions:
- The established YAC contig provides a foundational resource for the human MHC.
- This work represents a significant advancement in mapping complex genomic regions.
- The contig is essential for the future isolation of all genes within the human MHC.
