In the lipid storage form
of lysosomal storage disease I mentioned that dogs and cats can be born with decreased or missing lysosome enzymes that allows them to process fatty substances (lipids).
The mucopolysaccharides, which aid in bone formation, as well as that of the skin, cornea and cartilage, don't perform their function properly because of a lack
of lysosomal enzymes.
A type
of lysosomal storage disease, this can cause skeletal abnormalities, growth retardation, and gait abnormalities, and can require close monitoring and special measu...
The disease causes an accumulation of mucopolysaccharides, or glycosaminoglycans (GAGs) due to the impaired functioning
of lysosomal enzymes that break down GAGs which help build bones, cartilage, skin, tendons, corneas and the fluid responsible for lubricating joints.
The ensuing decrease in pH and / or the presence
of the lysosomal enzymes such as cathepsin B lead to premature activation of trypsinogen.
Lipidosis: a form
of lysosomal storage disease where lipids accumulate in nerves.
An early onset form
of lysosomal storage disease, this can cause affected dogs to display neurologic signs as puppies or young adults.
LTB4 increases edema and chemotaxis, induces release
of lysosomal enzymes, increases reactive oxygen species, and enhances production of the cytokines TNF - α, IL - 1, and IL - 6.»
Type 1 Diabetes: Urinary Proteomics and Protein Network Analysis Support Perturbation
of Lysosomal Function.
Elizabeth B. Moloney, PhD, is a post-doctoral research fellow at the Neuroregeneration Research Institute at McLean Hospital, where she is involved in developing both in vitro and in vivo approaches for understanding the role
of lysosomal function in the pathophysiology of cellular aging and...
The protein is a key regulator
of lysosomal exocytosis.
Furthermore, ApoE4 caused a disruption
of lysosomal integrity and a shift in the localization of Cathepsin D, an enzyme known to degrade Trx1.
A point mutation in Neu1 is responsible for a partial deficiency
of lysosomal neuraminadase and may explain the altered immune response (Rottier et al. 1998).
... [For example], A deficiency
of lysosomal sialidase (Neu1) leads to increased levels of LAMP -1-mediated lysosomal exocytosis by neutrophils in the bone marrow cavity.
Many
of the lysosomal proteases are active at neutral pH and this would mean that they could potentially cleave cell surface receptors and cell adhesion molecules.
Neuraminidase 1 is a negative regulator
of lysosomal exocytosis.
Comparative binding, endocytosis, and biodistribution of antibodies and antibody - coated carriers for targeted delivery
of lysosomal enzymes to ICAM - 1 versus transferrin receptor.
These are critical observations that will allow the field of autophagy to move beyond the utilization
of lysosomal inhibitors for the pharmacological treatment of cancer by targeting autophagy.
The researchers found that degenerative changes and loss of vision are caused by impaired function
of the lysosomal clean - up mechanism, or autophagy, in the fundus of the eye.
Specifically, the current study demonstrated that an accumulation of oxidized dopamine depressed the activity
of lysosomal glucocerebrosidase (GCase), an enzyme implicated in PD.
Not exact matches
The drug candidate is intended for the treatment
of subjects with neuronal ceroid lipofuscinosis, aka Batten Disease, a fatal
lysosomal storage disease that primarily affects the nervous system in children.
Wnt proteins, regulators
of development in many organisms, bind to seven transmembrane — spanning (7TMS) receptors called frizzleds, thereby recruiting the cytoplasmic molecule dishevelled (Dvl) to the plasma membrane.Frizzled - mediated endocytosis
of Wg (a Drosophila Wnt protein) and
lysosomal degradation may regulate the formation
of morphogen gradients.
Cuervo's group found that a mutant protein associated with a heritable version
of Parkinson's gums up
lysosomal channels.
Functional analyses indicate that MFSD12 encodes a
lysosomal protein that affects melanogenesis in zebrafish and mice, and that mutations in melanocyte - specific regulatory regions near DDB1 / TMEM138 correlate with expression
of ultraviolet response genes under selection in Eurasians.
«The mitochondrial and
lysosomal pathways are two critical pathways in disease development,» said Krainc, who also is the director
of the Center for Rare Neurological Diseases and a professor
of neurological surgery and
of physiology.
That depression in turn weakened overall
lysosomal function and contributed to degeneration
of neurons.
Genzyme has long been known for our expertise in the class
of rare genetic diseases known as
lysosomal storage disorders (LSDs).
One
of these compounds enabled chloride transport in real cells without seriously affecting
lysosomal pH.
The authors also employed other advanced imaging techniques — including electron microscopy and super-resolution imaging — to discover that the formation, and subsequent loosening,
of these contacts is regulated by a
lysosomal protein called RAB7.
For the first time ever, the present study showed that AMD is associated with impaired
lysosomal autophagy, which is an important clean - up mechanism
of the fundus
of the eye.
D'Oro, U., Vacchio, M.S., Weissman, A.M. & Ashwell, J.D. Activation
of the Lck tyrosine kinase targets cell surface T cell antigen receptors for
lysosomal degradation.
The molecular mechanism
of autophagy and its relationship to other
lysosomal degradation pathways remain incompletely understood.
Members
of the section use the NIH Clinical Center to evaluate individuals with cystinosis, a
lysosomal membrane defect leading to storage
of the amino acid cystine and causing kidney failure in childhood.
Rapid and reversible knockdown
of endogenous proteins by peptide - directed
lysosomal degradation.
Lysosomal sequestration
of sunitinib: a novel mechanism
of drug resistance.
Enhanced delivery
of α - glucosidase for Pompe disease by ICAM -1-targeted nanocarriers: comparative performance
of a strategy for three distinct
lysosomal storage disorders.
Sucrose - induced vacuolation results in increased expression
of cholesterol biosynthesis and
lysosomal genes.
ALIX Regulates the Ubiquitin - Independent
Lysosomal Sorting
of the P2Y 1 Purinergic Receptor via a YPX 3 L Motif.
Targeting, Endocytosis, and
Lysosomal Delivery
of Active Enzymes to Model Human Neurons by ICAM -1-Targeted Nanocarriers.
Deficiency
of ATP13A2 leads to
lysosomal dysfunction, α - synuclein accumulation, and neurotoxicity.
CXCR4 may then be recycled to the cell surface or ubiquitinated by AIP4 that results in the
lysosomal degradation
of CXCR4.
Building on these extreme examples that emphasize the potential roles played by healthy lysosomes in protecting neurons against the age - dependent accumulation
of toxic cellular debris, we ultimately seek to understand how neurons sense and regulate the status
of their lysosomes, how lysosomes are affected during age - related disease states and whether
lysosomal function can be modulated for therapeutic purposes.
Prosaposin facilitates sortilin - independent
lysosomal trafficking
of progranulin.
This is my postdoctoral work from St Jude Children's Hopsital in Sandra d'Azzo's lab and is an exampe
of excessive
lysosomal exocytosis being pathological.
So the idea would be to identify the enzymes these organisms use to digest
lysosomal wastes, modify them a bit to help them work in the slightly different environment
of the human lysosome, and then deliver them to where they need to go in our cells.
It is one
of over 50 genetically inherited disorders known as
Lysosomal Storage Diseases.
In Neu1 - deficient mice the excessive
lysosomal exocytosis results in cleavage
of VCAM - 1, loss
of bone marrow progenitor cells from the bone niche and the onset
of spleenic hematopoiesis.
We further demonstrate that
lysosomal exocytosis mediates the resealing
of primary skin fibroblasts wounded during the contraction
of collagen matrices.
If such enzymes didn't exist, then the planet would be ankle - deep in the undegraded
lysosomal wastes left over from the cells
of 600 million years
of animal life on this planet.
GM1 gangliosidosis, or Landing disease, is a rare inherited neurodegenerative
lysosomal storage disorder characterized by severe cognitive and motor developmental delays resulting in the death
of most patients at a very young age.