Structural mechanism studies of hTNF alpha mutants in position 30 and 42 amino acid / 中国医学科学院学报
Acta Academiae Medicinae Sinicae
;
(6): 144-148, 2002.
Article
in Chinese
| WPRIM
| ID: wpr-350058
ABSTRACT
<p><b>OBJECTIVE</b>To study the relationship between the structure and functional activity of hTNF alpha.</p><p><b>METHODS</b>Four hTNF alpha mutants were constructed, different binding structures and gene responses related with these mutants were studied by the methods of immunoprecipitation and mRNA differential display.</p><p><b>RESULTS</b>The specific activities and LD50 of the different hTNF alpha mutants indicated their different bioactivities. It was shown that the hTNF alpha mutants had the relative binding affinities to the wild types. The mRNA differential display assay proved that the hTNF alpha mutants stimulated different gene responses.</p><p><b>CONCLUSION</b>These results suggest that the specific anti-tumor activities of hTNF alpha mutants are accomplished by inducing different or same gene response at different quantities after its binding to specific receptor.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Physiology
/
Structure-Activity Relationship
/
Binding Sites
/
Molecular Structure
/
Tumor Necrosis Factor-alpha
/
Apoptosis
/
Gene Expression Profiling
/
Amino Acid Motifs
/
Genetics
/
Mutation
Limits:
Humans
Language:
Chinese
Journal:
Acta Academiae Medicinae Sinicae
Year:
2002
Type:
Article
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