PrionPathway
Transmissible spongiform encephalopathy (TSE) is thought to result from the structural conversion of cellular prion protein, PrP(C), into a misfolded oligomeric form, PrP(Sc). PrP is a cell membrane GPI anchored glycoprotein that is expressed in most tissues and in high levels in the nervous system. Some likely cellular functions of PrP are (1) cell protection against oxidative stress, (2) induction of neuronal cell ......阅读全文
Prion－Pathway
Transmissible spongiform encephalopathy (TSE) is thought to result from the structural conversion of cellular prion protein, PrP(C), into a misfolded
Prion：新方法对抗朊病毒病
朊病毒病（prion disease）是在人与人之间以及不同物种之间传播的神经退行性的蛋白错误折叠疾病。朊病毒病具有可传播性和可重复的病程，因此它们很容易在小鼠中建模。死亡发生在一个较小而稳定的时间框架内，因此通过治疗手段延长寿命是可以证明的。这类疾病对治疗具有很高的抵抗力，很少有化合物能延长小
Antisense－Pathway
About 8% of human genes have been estimated to carry out transcription from both DNA strands, resulting in significant level of endogenous antisense R
Complement－Pathway
The complement pathway consists of a series of over thirty proteins in plasma that are part of the immune response. Activation of the complement syste
Dicer－Pathway
The degradation of endogenous mRNA in a sequence-specific manner can be induced by dsRNA [RNA interfernce (RNAi)], antisense transcription, or viral i
Fibrinolysis－Pathway
Clot formation and fibrinolysis is a balance of plasmin activation/inhibition and thrombin-thrombomodulin activity that regulates fibrin polymer forma
Glycolysis－Pathway
Glycolysis was one of the first metabolic pathways studied and is one of the best understood, in terms of the enzymes involved, their mechanisms of ac
WNT－Signaling－Pathway
Wnt family members are secreted glycoproteins who bind to cell surface receptors such as Frizzled. Wnt members can play a role in the expression of ma
TPO－Signaling－Pathway
Thrombopoietin (TPO) binds to its receptor inducing aggregation and activation. TPO signals its growth regulating effects to the cell through several
BCR－Signaling－Pathway
Significant progress has been made towards delineation of the intrinsic molecular processes that regulate B lymphocyte immune function. Recent observa
Ceramide－Signaling－Pathway
Over 1,000 papers and reviews have been written about the role of ceramide in the production of programmed cell death or apoptosis. Ceramide is a sphi
AKT－Signaling－Pathway
Many cell-surface receptors induce production of second messengers like PIP3, phosphatidylinositol 3,4,5-trisphosphate, that convey signals to the cyt
Integrin－Signaling－Pathway
Integrins are cell surface receptors that interact with the extracellular matrix and mediate intracellular signals in response to the extracellular ma
Alternative－Complement－Pathway
The complement system of plasma proteins is an important part of the immune system that forms a cascade of factors that lyses foreign cells. There are
EGF－Signaling－Pathway
The epidermal growth factor (EGF) peptide induces cellular proliferation through the EGF receptor, which has a tyrosine kinase cytoplasmic domain, a s
ATM－Signaling－Pathway
The ataxia telangiectasia-mutated gene (ATM) encodes a protein kinase that acts as a tumor suppressor. ATM activation by ionizing radiation damage to
EPO－Signaling－Pathway
Erythropoietin functions to increase the number of red blood cells. Thus, it has found utility as a drug for those needing to replenish erythrocytes f
Reelin－Signaling－Pathway
Reelin is an extracellular protein secreted by neurons. Reeler mice with a defective Reelin gene exhibit neuronal abnormalities in development. Mice t
Insulin－Signaling－Pathway
The appropriate signaling through the insulin pathway is critical for the regulation of glucose levels and the avoidance of diabetes. Insulin forms a
MAPKinase－Signaling－Pathway
The ever evolving mitogen-activated protein kinase (MAP kinase) pathways consist of four major groupings and numerous related proteins which constitut
PDGF－Signaling－Pathway
Platelet Derived Growth Factor (PDGF) plays a critical role in cellular proliferation and development. The biologically active form is a dimer formed
Phosphatidylcholine－Biosynthesis－Pathway
The main components of biological membranes are phosphoglyceride lipids composed of a glycerol unit esterified to two fatty acids and a polar alcohol
Classical－Complement－Pathway
The complement system is part of the defense against invading cells and is composed of about twenty different proteins found in the plasma. When activ
Erythrocyte－Differentiation－Pathway
Stem cells in the bone marrow produce a variety of hematopoietic cell types from common progenitor cells under the influence of cytokines and growth f
mTOR－Signaling－Pathway
mTOR (mammalian target of rapamycin) appears to play a central role in signaling caused by nutrients and mitogens such as growth factors to regulate t
Ras－Signaling－Pathway
Ras activates many signaling cascades. Here we illustrate some of the well-characterized cascades in a generic compilation of effector molecules. The
IFN－alpha－signaling－pathway
Interferon alpha plays a role in viral infections. Signaling takes place through an IFN Recpetor complex consisting of two alpha chains (Type I recept
Trka－Receptor－Signaling－Pathway
Nerve growth factor (NGF) is a neurotrophic factor that stimulates neuronal survival and growth through TrkA, a member of the trk family of tyrosine k
Granzyme－A－mediated－Apoptosis－Pathway
One mechanism used by cytotoxic T cells to kill tumor cells and virus-infected cells is the release of perforin and granzyme proteins. Perforin protei
Hop－Pathway－in－Cardiac－Development
Homeodomain transcription factors comprise a large family of DNA binding factors that regulate transcription and development. Many homeodomain genes a