Abstract
A quantitative immunoblotting assay (QIBA) for the determination of specific antibody titres in human autoimmune sera is described. In this assay, a total HeLa nuclear protein fraction, immobilized on nitrocellulose blot strips, was used as source of antigens and immunoreactive species of autoantibodies were quantitated by an enzyme linked second antibody procedure. Besides being more discriminative, QIBA appeared to be up to 500 times more sensitive than immunodiffusion or immunoelectrophoresis. In this study we used 21 sera from patients with SLE or MCTD for a quantitative analysis of their specific autoantibody content. Within this group, a very diverse spectrum of antibody populations was observed; anti-RNP sera appeared to contain, among others, high tired antibody versus 70K and 31K polypeptides while all (n = 6) anti-Sm sera recognized a 25kD protein doublet. In a follow-up study of two MCTD patients significant flares in specific antibody content could be observed.
MeSH Terms
Adult
Aged
Antibodies, Antinuclear/analysis
Antibody Specificity
Antigens/immunology
Autoantigens
Collodion
Dose-Response Relationship, Immunologic
Female
Follow-Up Studies
Humans
Immunologic Techniques
Lupus Erythematosus, Systemic/immunology
Mixed Connective Tissue Disease/immunology
Ribonucleoproteins/immunology
Ribonucleoproteins, Small Nuclear
snRNP Core Proteins
Chemicals
Antibodies, Antinuclear
Antigens
Autoantigens
Ribonucleoproteins
Ribonucleoproteins, Small Nuclear
snRNP Core Proteins
Collodion
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Habets W J
de Rooij D J
Hoet M H
van de Putte L B
van Venrooij W J
References (22)
22 references, click to expand
-
Polypeptide components of human small nuclear ribonucleoproteins.
Proc Natl Acad Sci U S A. 1983 Sep;80(17):5208-12
PMID: 6225117
-
Antibodies to Sm and RNP. Prognosticators of disease involvement.
Arthritis Rheum. 1983 Jul;26(7):848-53
PMID: 6603221
-
Synthesis and assembly of human small nuclear ribonucleoproteins generated by cell-free translation.
Proc Natl Acad Sci U S A. 1983 Oct;80(20):6356-60
PMID: 6226047
-
Characterization of the SS-B (La) antigen in adenovirus-infected and uninfected HeLa cells.
EMBO J. 1983;2(10):1625-31
PMID: 6357777
-
Identification of human Sm and (U1) RNP antigens by immunoblotting.
J Immunol Methods. 1983 Nov 11;64(1-2):45-59
PMID: 6227671
-
Antibodies from patients with mixed connective tissue disease react with heterogeneous nuclear ribonucleoprotein or ribonucleic acid (hnRNP/RNA) of the nuclear matrix.
J Immunol. 1984 Mar;132(3):1216-22
PMID: 6198384
-
Mixed connective tissue disease--an apparently distinct rheumatic disease syndrome associated with a specific antibody to an extractable nuclear antigen (ENA).
Am J Med. 1972 Feb;52(2):148-59
PMID: 4621694
-
Identification of antibodies to nuclear acidic antigens by counterimmunoelectrophoresis.
Arthritis Rheum. 1976 May-Jun;19(3):574-80
PMID: 1084750
-
Association of antibodies to ribonucleoprotein and Sm antigens with mixed connective-tissue disease, systematic lupus erythematosus and other rheumatic diseases.
N Engl J Med. 1976 Nov 18;295(21):1149-54
PMID: 1086429
-
Identification of a nuclear protein (Scl-70) as a unique target of human antinuclear antibodies in scleroderma.
J Biol Chem. 1979 Oct 25;254(20):10514-22
PMID: 385602
-
Antibodies to small nuclear RNAs complexed with proteins are produced by patients with systemic lupus erythematosus.
Proc Natl Acad Sci U S A. 1979 Nov;76(11):5495-9
PMID: 316537
-
hnRNA and its attachment to a nuclear protein matrix.
J Cell Biol. 1981 Mar;88(3):554-63
PMID: 7217204
-
Anti-RNP monoclonal antibodies derived from a mouse strain with lupus-like autoimmunity.
J Immunol. 1982 Mar;128(3):1176-80
PMID: 6173424
-
Assays for the Sm and RNP autoantigens: the requirement for RNA and influence of the tissue source.
J Immunol. 1982 Jun;128(6):2751-6
PMID: 6176651
-
Autoantibodies to nuclear antigens (ANA): their immunobiology and medicine.
Adv Immunol. 1982;33:167-240
PMID: 6182766
-
Anti-nuclear matrix antibodies in mixed connective tissue disease.
Eur J Immunol. 1982 Sep;12(9):783-6
PMID: 6183128
-
Relationship between snRNA species contained in nuclear antigens recognized by autoantibodies and the clinical profile in systemic rheumatic diseases.
Biomed Pharmacother. 1982;36(3):134-9
PMID: 6185159
-
Isolation of small nuclear ribonucleoproteins containing U1, U2, U4, U5, and U6 RNAs.
J Biol Chem. 1983 Feb 25;258(4):2604-13
PMID: 6185498
-
5'-terminal caps of snRNAs are accessible for reaction with 2,2,7-trimethylguanosine-specific antibody in intact snRNPs.
J Biol Chem. 1983 Mar 10;258(5):2745-7
PMID: 6186660
-
Clinical characteristics of patients with rheumatic disorders who possess antibodies against ribonucleoprotein particles.
Arthritis Rheum. 1983 Apr;26(4):509-15
PMID: 6601484
-
Fractionation and characterization of human small nuclear ribonucleoproteins containing U1 and U2 RNAs.
J Biol Chem. 1983 Jun 10;258(11):7181-9
PMID: 6189835
-
Antibodies against distinct nuclear matrix proteins are characteristic for mixed connective tissue disease.
Clin Exp Immunol. 1983 Oct;54(1):265-76
PMID: 6352106