Biomaterial Database

Targeted disruption of the c-src proto-oncogene leads to osteopetrosis in mice. 1991

P Soriano, and C Montgomery, and R Geske, and A Bradley

Howard Hughes Medical Institute, Baylor College of Medicine, Houston, Texas 77030.

To understand the normal, physiological role of the c-src proto-oncogene, a null mutation was introduced into the gene by homologous recombination in mouse embryonic stem cells. Two independent targeted clones were used to generate chimeras that transmitted the mutated allele to their offspring. Intercrossing of heterozygotes gave rise to live born homozygotes, but most of these mice died within the first few weeks of birth. Histological and hematological examination of the homozygous mutants did not reveal detectable abnormalities in the brain or platelets, where src is most highly expressed. However, these mutants were deficient in bone remodeling, indicating impaired osteoclast function, and developed osteopetrosis. These results demonstrate that src is not required for general cell viability (possibly because of functional overlap with other tyrosine kinases related to src) and uncover an essential role for src in bone formation.

UI	MeSH Term	Description	Entries
D008969	Molecular Sequence Data	Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.	Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010022	Osteopetrosis	Excessive formation of dense trabecular bone leading to pathological fractures; OSTEITIS; SPLENOMEGALY with infarct; ANEMIA; and extramedullary hemopoiesis (HEMATOPOIESIS, EXTRAMEDULLARY).	Albers-Schoenberg Disease,Marble Bone Disease,Osteosclerosis Fragilis,Albers-Schonberg Disease,Albers-Schonberg Disease, Autosomal Dominant,Albers-Schönberg Disease,Autosomal Dominant Osteopetrosis Type 2,Congenital Osteopetrosis,Marble Bones, Autosomal Dominant,Osteopetrosis Autosomal Dominant Type 2,Osteopetrosis, Autosomal Dominant 2,Osteopetrosis, Autosomal Dominant, Type II,Osteosclerosis Fragilis Generalisata,Albers Schoenberg Disease,Albers Schonberg Disease,Albers Schonberg Disease, Autosomal Dominant,Albers Schönberg Disease,Disease, Albers-Schoenberg,Disease, Albers-Schonberg,Disease, Albers-Schönberg,Disease, Marble Bone,Osteopetroses,Osteosclerosis Fragilis Generalisatas
D010957	Plasmids	Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS.	Episomes,Episome,Plasmid
D011995	Recombination, Genetic	Production of new arrangements of DNA by various mechanisms such as assortment and segregation, CROSSING OVER; GENE CONVERSION; GENETIC TRANSFORMATION; GENETIC CONJUGATION; GENETIC TRANSDUCTION; or mixed infection of viruses.	Genetic Recombination,Recombination,Genetic Recombinations,Recombinations,Recombinations, Genetic
D005091	Exons	The parts of a transcript of a split GENE remaining after the INTRONS are removed. They are spliced together to become a MESSENGER RNA or other functional RNA.	Mini-Exon,Exon,Mini Exon,Mini-Exons
D005822	Genetic Vectors	DNA molecules capable of autonomous replication within a host cell and into which other DNA sequences can be inserted and thus amplified. Many are derived from PLASMIDS; BACTERIOPHAGES; or VIRUSES. They are used for transporting foreign genes into recipient cells. Genetic vectors possess a functional replicator site and contain GENETIC MARKERS to facilitate their selective recognition.	Cloning Vectors,Shuttle Vectors,Vectors, Genetic,Cloning Vector,Genetic Vector,Shuttle Vector,Vector, Cloning,Vector, Genetic,Vector, Shuttle,Vectors, Cloning,Vectors, Shuttle
D005838	Genotype	The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS.	Genogroup,Genogroups,Genotypes
D006580	Genetic Carrier Screening	Identification of individuals who are heterozygous at a GENETIC LOCUS for a recessive PHENOTYPE.	Carriers, Genetic, Detection,Genetic Carriers, Detection,Heterozygote Detection,Carrier Detection, Genetic,Detection, Genetic Carrier,Genetic Carrier Detection,Heterozygote Screening,Carrier Screening, Genetic,Detection, Heterozygote,Screening, Genetic Carrier,Screening, Heterozygote,Screenings, Genetic Carrier
D006720	Homozygote	An individual in which both alleles at a given locus are identical.	Homozygotes
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia