PMID- 7496941 OWN - NLM STAT- MEDLINE DCOM- 19960116 LR - 20210526 IS - 1071-412X (Print) IS - 1098-6588 (Electronic) IS - 1071-412X (Linking) VI - 1 IP - 2 DP - 1994 Mar TI - Detection of antibodies to trans-activator protein (p40taxI) of human T-cell lymphotropic virus type I by a synthetic peptide-based assay. PG - 176-81 AB - Antibodies to human T-cell lymphotropic virus type I (HTLV-I) trans-activator protein (p40taxI) were determined in serum specimens from individuals infected with HTLV-I (n = 138) and HTLV-II (n = 19). Western blot (immunoblot) analysis using recombinant tax demonstrated the presence of anti-tax antibodies in 96% of patients (25 of 26) with HTLV-I-associated myelopathy, 43% of those (20 of 46) with adult T-cell leukemia, and 61% of asymptomatic HTLV-I blood donors (40 of 66); only one of the HTLV-II specimens reacted with the recombinant tax protein. Synthetic peptides (Tax8(106-125), Tax22(316-335), Tax-23(331-350), and Tax-24(336-353) representing the immunodominant epitopes of p40taxI detected anti-tax antibodies in 66 (48%), 50 (36%), 66 (48%), and 64 (46%) of 138 HTLV-I-positive specimens, respectively. An enzyme immunoassay using an equimolar ratio of these four peptides allowed sensitive detection of anti-tax antibodies in 96% of patients (25 of 26) with HTLV-1-associated myelopathy, 52% of adult T-cell leukemia patients (24 of 46), and 62% of asymptomatic HTLV-1-infected donors (41 of 66). The synthetic peptide-based cocktail assay was HTLV-I specific, since none of the HTLV-II-infected specimens reacted with these peptides. Interestingly, the corresponding regions from the HTLV-II tax protein, Tax8II(106-125), and Tax-22II(312-331) did not react with either HTLV-II or HTLV-I specimens. Thus, a synthetic peptide-based assay composed of immunodominant epitopes located towards the amino terminus and the C terminus of p40taxI provides a reliable and sensitive assay for the detection of anti-tax antibodies in seroepidemiologic studies. FAU - Rudolph, D L AU - Rudolph DL AD - Retrovirus Diseases Branch, Centers for Disease Control, Atlanta, Georgia 30333, USA. FAU - Coligan, J E AU - Coligan JE FAU - Lal, R B AU - Lal RB LA - eng PT - Journal Article PL - United States TA - Clin Diagn Lab Immunol JT - Clinical and diagnostic laboratory immunology JID - 9421292 RN - 0 (Gene Products, tax) RN - 0 (HTLV-I Antibodies) RN - 0 (Immunodominant Epitopes) RN - 0 (Peptides) RN - 0 (Recombinant Proteins) SB - IM MH - Amino Acid Sequence MH - Gene Products, tax/genetics/*immunology MH - HTLV-I Antibodies/*blood MH - HTLV-I Infections/immunology/virology MH - Humans MH - Immunodominant Epitopes MH - Immunoenzyme Techniques MH - Molecular Sequence Data MH - Peptides/chemical synthesis/genetics/*immunology MH - Recombinant Proteins/*immunology PMC - PMC368223 EDAT- 1994/03/01 00:00 MHDA- 1994/03/01 00:01 PMCR- 1994/03/01 CRDT- 1994/03/01 00:00 PHST- 1994/03/01 00:00 [pubmed] PHST- 1994/03/01 00:01 [medline] PHST- 1994/03/01 00:00 [entrez] PHST- 1994/03/01 00:00 [pmc-release] AID - 10.1128/cdli.1.2.176-181.1994 [doi] PST - ppublish SO - Clin Diagn Lab Immunol. 1994 Mar;1(2):176-81. doi: 10.1128/cdli.1.2.176-181.1994.