Abstract:
:The most important glycoproteins of trypanosomatids are anchored by glycoinositolphospholipids (GIPLs) to their plasma membrane. In addition, free GIPLs have been described, for instance the lipopeptidophosphoglycan (LPPG) which is a major component of the surface of T. cruzi epimastigotes. An inositolphosphoceramide (IPC) is part of the LPPG and of glycoproteins present in different stages of T. cruzi. Ceramide was not found in mammal GIPL-anchors. The lipid moieties in T. cruzi anchors can be quite variable. However, no diacylglycerol (DAG) was found in contrast with the African trypanosomes. In GIPLs of epimastigotes collected at the logarithmic phase of growth both, 1-O-hexadecyl-2-O-palmitoylglycerol and ceramide were identified. Lignoceroylsphinganine is the major ceramide, however, no lignoceric acid was detected when analysing the candidate precursors IPCs, in any of the stages of T. cruzi. An alkylglycerol has been found either as a lyso species in the Tc85 glycoprotein of trypomastigotes or acylated as in the 1G7 anchor of metacyclic forms and in the mucins of epimastigote forms. The lipid in the mucins is replaced by ceramide when the parasite differentiates to metacyclic forms. Also, in the Ssp-4 glycoprotein characteristic of amastigotes, a ceramide was identified as the anchor lipid. These variations suggest that a remodelling mechanism is working in T. cruzi. On the other hand, the oligosaccharide core in the GIPLs of T. cruzi is substituted with galactofuranose. This monosaccharide is found only in the pyranose configuration in mammalian glycoproteins and glycolipids. Thus, the biosynthetic steps for the introduction of galactofuranose and ceramide in the anchors of T. cruzi are good targets for the development of therapeutic agents.
journal_name
Curr Pharm Desjournal_title
Current pharmaceutical designauthors
Lederkremer RM,Bertello LEdoi
10.2174/1381612013397519subject
Has Abstractpub_date
2001-08-01 00:00:00pages
1165-79issue
12eissn
1381-6128issn
1873-4286journal_volume
7pub_type
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journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612822666151112152143
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Central serous chorioretinopathy (CSC) is the fourth most frequent retinal disorder in terms of prevalence. It typically occurs in young subjects and affects men more often than women. CSC is characterized by serous retinal detachment (SRD) involving mainly the macular area. The clinical course is usually se...
journal_title:Current pharmaceutical design
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更新日期:2011-01-01 00:00:00
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journal_title:Current pharmaceutical design
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更新日期:2017-01-01 00:00:00
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更新日期:2016-01-01 00:00:00
abstract::Protein stability of hypoxia-inducible factor (HIF)alpha subunits is regulated by the oxygen-sensing prolyl-4-hydroxylase domain (PHD) enzymes. Under oxygen-limited conditions, HIFalpha subunits are stabilized and form active HIF transcription factors that induce a large number of genes involved in adaptation to hypox...
journal_title:Current pharmaceutical design
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abstract::The influence of mitochondrial dysfunction on pathological states involving inflammatory and/or oxidative stress in tissues that do not show frank cellular apoptosis or necrosis has been rather difficult to unravel, and the literature is replete with contradictory information. Although such discrepancies have many pot...
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journal_title:Current pharmaceutical design
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更新日期:2014-01-01 00:00:00
abstract::Sulphur mustard (SM; (2, 2'-dichloroethylsulfide)) was used for the first time in 1917, during the World War I. SM mainly induces DNA damage, oxidative stress, and inflammation. This compound injures the respiratory system, eyes, skin and the endocrine, gastrointestinal, and hematopoietic systems. However, due to the ...
journal_title:Current pharmaceutical design
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更新日期:2018-01-01 00:00:00
abstract::In the last two decades the development of efficient plant-based expression strategies and new concepts for the purification of recombinant proteins prompted the application of plant-derived vaccines for veterinary purposes. The expression of recombinant proteins in plants possesses advantages over conventional eukary...
journal_title:Current pharmaceutical design
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更新日期:2013-01-01 00:00:00
abstract::Invasive fungal infections are a major cause of morbidity and mortality in immunosuppressed patients with fatality rates ranging from 30 % to 80 % in neutropenic patients. This results at least partly in difficulties obtaining a reliable and early diagnosis, followed by the fact that clinical symptoms are unspecific a...
journal_title:Current pharmaceutical design
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abstract::In the brain, acetylcholine (ACh) is regarded as one of the major neurotransmitters. During the advancement of Alzheimer's disease (AD) cholinergic deficits occur and this can lead to extensive cognitive dysfunction and decline. Acetylcholinesterase (AChE) remains a highly feasible target for the symptomatic improveme...
journal_title:Current pharmaceutical design
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更新日期:2019-01-01 00:00:00
abstract::Neglected parasitic diseases are a group of infections currently considered as a worldwide concern. This fact can be attributed to the migration of these diseases to developed and developing countries, associated with therapeutic insufficiency resulted from the low investment in the research and development of new dru...
journal_title:Current pharmaceutical design
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更新日期:2020-01-01 00:00:00
abstract::In the third millennium preventive medicine is becoming a corner stone in our concept of health. Colorectal cancer (CRC) fits the criteria of a disease suitable for prevention interventions. It is a prevalent disease that is associated with considerable mortality and morbidity rates, with more than 1,000,000 new cases...
journal_title:Current pharmaceutical design
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更新日期:2007-01-01 00:00:00
abstract::Over the last years a number of reports have described elevated numbers of regulatory T (Treg) cells inside of tumors, in close proximity of the tumor, draining lymph nodes and also in peripheral blood of patients with solid tumors and hematologic malignancies. There is increasing evidence that Treg cells can migrate ...
journal_title:Current pharmaceutical design
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