Gs Alpha LoxP (Gnastm1Lsw) Mouse Model for Metabolism Studies

Generation of a floxed Gnsa gene for the G-protein Gs alpha (Gsalpha) for the construction of conditional knockout mice. The heterotrimeric G protein Gsalpha couples many receptors to adenylyl cyclase and is essential for hormone-stimulated cAMP generation. Previous mouse models with germ-line mutations in Gnas, the gene that encodes Gsalpha had limited usefulness in trying to decipher the role of Gsalpha pathways in specific tissues since only heterozygotes were viable and could be analyzed.

Sirt6 LoxP (Sirt6tm1.1Cxd) Mouse Model for Liver Studies

Generation of floxed Sirtuin 6 for the construction of conditional knockout mice.

The Sirtuins (Sirt1-7), a family of seven proteins related to yeast Sir2, are histone deacetylases that regulate many critical biological processes including genomic stability, adaptation to calorie restriction and aging. Mice with a targeted disruption of Sirt6 had very low levels of blood glucose (and paradoxically, low insulin levels) and died shortly after weaning. Hypoglycemia, attributed to increased sensitivity to insulin, was the major cause for lethality.

Broadly Neutralizing Human Anti-HIV Monoclonal Antibody 10E8 and Related Antibodies Capable of Neutralizing Most HIV-1 Strains

The uses for human anti-HIV monoclonal antibody 10E8 and its variants include passive immunization, therapeutic vaccination, and the development of vaccine immunogens. 10E8 is one of the most potent HIV-neutralizing antibodies isolated and it neutralizes up to 98% of diverse HIV-1 strains. 10E8 is specific to the membrane-proximal external region (MPER) of the HIV envelope protein gp41 and 10E8 is orthogonal to other anti-HIV antibodies. In combination with other antibodies 10E8 may provide an antibody response that neutralizes nearly all strains of HIV-1.

Hspa2 Knockout Mice for Study of Spermatogenesis and Male Infertility

HSPA2 is a member of the HSP70 family of heat-shock proteins that serve as molecular chaperones. Researchers discovered that HSPA2 protein is expressed in spermatogenesis during the meiotic phase. Spermatogenic cells lacking the HSPA2 protein arrest in mid-meiosis and undergo apoptosis. HSPA2 is present in the synaptonemal complex of wild-type mice and the chromosomes fail to separate in HSPA2-deficient mice (previously known as Hsp70-2-/- mice), suggesting that HSPA2 is required for the chromosomal events of meiosis such as synapsis, crossing over, or recombination.