Mice, Inbred C57BL

Publication Title: 
Oncogene

Many degenerative diseases that occur with aging, as well as premature aging syndromes, are characterized by presenting cells with critically short telomeres. Telomerase reintroduction is envisioned as a putative therapy for diseases characterized by telomere exhaustion. K5-mTert transgenic mice overexpress telomerase in a wide spectrum of tissues. These mice have a higher incidence of both induced and spontaneous tumors, resulting in increased mortality during the first year of life.

Author(s): 
Gonz·lez-Su·rez, Eva
Geserick, Christoph
Flores, Juana M.
Blasco, Maria A.
Publication Title: 
PLoS genetics

Mutant dwarf and calorie-restricted mice benefit from healthy aging and unusually long lifespan. In contrast, mouse models for DNA repair-deficient progeroid syndromes age and die prematurely. To identify mechanisms that regulate mammalian longevity, we quantified the parallels between the genome-wide liver expression profiles of mice with those two extremes of lifespan. Contrary to expectation, we find significant, genome-wide expression associations between the progeroid and long-lived mice.

Author(s): 
Schumacher, Bjˆrn
van der Pluijm, Ingrid
Moorhouse, Michael J.
Kosteas, Theodore
Robinson, Andria Rasile
Suh, Yousin
Breit, Timo M.
van Steeg, Harry
Niedernhofer, Laura J.
van Ijcken, Wilfred
Bartke, Andrzej
Spindler, Stephen R.
Hoeijmakers, Jan H. J.
van der Horst, Gijsbertus T. J.
Garinis, George A.
Publication Title: 
Cancer Research

C57BL/6J mice carrying the Min allele of Adenomatous polyposis coli (Apc) develop numerous adenomas along the entire length of the intestine and consequently die at an early age. This short lifespan would prevent the accumulation of somatic genetic mutations or epigenetic alterations necessary for tumor progression. To overcome this limitation, we generated F(1) Apc(Min/+) hybrids by crossing C57BR/cdcJ and SWR/J females to C57BL/6J Apc(Min/+) males. These hybrids developed few intestinal tumors and often lived longer than 1 year.

Author(s): 
Halberg, Richard B.
Waggoner, Jesse
Rasmussen, Kristen
White, Alanna
Clipson, Linda
Prunuske, Amy J.
Bacher, Jeffery W.
Sullivan, Ruth
Washington, Mary Kay
Pitot, Henry C.
Petrini, John H. J.
Albertson, Donna G.
Dove, William F.
Publication Title: 
Molecular Nutrition & Food Research

Vitamin E refers to a family of several compounds that possess a similar chemical structure comprising a chromanol ring with a 16-carbon side chain. The degree of saturation of the side chain, and positions and nature of methyl groups designate the compounds as tocopherols or tocotrienols. Vitamin E compounds have antioxidant properties due to a hydroxyl group on the chromanol ring. Recently, it has been suggested that vitamin E may also regulate signal transduction and gene expression.

Author(s): 
Banks, Ruth
Speakman, John R.
Selman, Colin
Publication Title: 
Archivum Immunologiae Et Therapiae Experimentalis

Vasculature is essential for the sustained growth of solid tumors and metastases. Tumor cells surviving vascular-disruptive therapeutic intervention (especially those present at the tumor rim) can contribute to tumor regrowth. The aim was to strengthen, by carrier-mediated delivery of a chemotherapeutic, the curative effects of a bifunctional anti-vascular oligopeptide capable of inducing vascular shutdown and tumor shrinkage. For the in vitro experiments and animal therapy, ACDCRGDCFC-GG-(D)(KLAKLAK)(2) peptide (900 microM in D-PBSA, i.e.

Author(s): 
Sochanik, Aleksander
Mitrus, Iwona
Smolarczyk, Ryszard
Cicho?, Tomasz
Snietura, Miros?aw
Czaja, Maria
Szala, Stanis?aw
Publication Title: 
PloS One

Caloric restriction (CR), a reduction of food intake while avoiding malnutrition, can delay the onset of cancer and age-related diseases in several species, including mice. In addition, depending of the genetic background, CR can also increase or decrease mouse longevity. This has highlighted the importance of identifying the molecular pathways that interplay with CR in modulating longevity. Significant lifespan extension in mice has been recently achieved through over-expression of the catalytic subunit of mouse telomerase (mTERT) in a cancer protective background.

Author(s): 
Vera, Elsa
Bernardes de Jesus, Bruno
Foronda, Miguel
Flores, Juana M.
Blasco, Maria A.
Publication Title: 
Experimental Biology and Medicine (Maywood, N.J.)

Aging degrades motivation, cognition, sensory modalities and physical capacities, essentially dimming zestful living. Bradykinesis (declining physical movement) is a highly reliable biomarker of aging and mortality risk. Mice fed a complex dietary supplement (DSP) designed to ameliorate five mechanisms associated with aging showed no loss of total daily locomotion compared with >50% decrement in old untreated mice.

Author(s): 
Aksenov, Vadim
Long, Jiangang
Lokuge, Sonali
Foster, Jane A.
Liu, Jiankang
Rollo, C. David
Publication Title: 
Cell Cycle (Georgetown, Tex.)

Caloric restriction has been shown to increase lifespan in several organisms and to delay onset of age-related diseases. The transcriptional response to caloric restriction has been studied for mRNAs, while the microRNA signature following caloric restriction remains unexplored. Here, we characterize the microRNA expression in mouse breast tissue before and after caloric restriction, reporting several changes in the microRNA expression profile.

Author(s): 
ÿrom, Ulf Andersson
Lim, Meng K.
Savage, Jason E.
Jin, Lianjin
Saleh, Anthony D.
Lisanti, Michael P.
Simone, Nicole L.
Publication Title: 
MÈdecine Sciences: M/S

Most of the signalling pathways involved in aging regulation have been recently found well conserved at various levels throughout the evolution. Taking this into account, a diversity of model organisms, including worms, rodents, and lemurs as well, allows to address different questions: how to understand the interactions between genetic and environmental factors while challenging theories of aging, to preserve hearing integrity, to fight against senescence of neural stem cells, or to explore brain fitness from gene expression to cognitive and social behavior?

Author(s): 
Galas, Simon
Ch‚teau, Marie-ThÈrËse
PomiËs, Pascal
Wang, Jing
Menardo, Julien
Puel, Jean-Luc
Hugnot, Jean-Philippe
Verdier, Jean-Michel
Devau, Gina
Publication Title: 
The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences

Quantitative trait loci (QTL) of longevity identified in human and mouse are significantly colocalized, suggesting that common mechanisms are involved. However, the limited number of strains that have been used in mouse longevity studies undermines the ability to identify longevity genes. We crossed C57BL/6J mice with a new wild-derived strain, Pohn, and identified two life span QTL-Ls1 and Ls2. Interestingly, homologous human longevity QTL colocalize with Ls1. We also defined new QTL for metabolic heat production and body weight.

Author(s): 
Yuan, Rong
Flurkey, Kevin
Meng, Qingying
Astle, Mike C.
Harrison, David E.

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