Human DMBT1 (Deleted in malignant brain tumors 1 protein) ELISA Kit (DEIA-FN404)

Regulatory status: For research use only, not for use in diagnostic procedures.

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Size
96T
Sample
serum, plasma, cell culture supernatants, tissue homogenate
Species Reactivity
Human
Intended Use
For quantitative detection of Human DMBT1 (Deleted in malignant brain tumors 1 protein) in serum, plasma, tissue homogenates and other biological fluids.
Contents of Kit
1. 96-well strip plate (Dismountable), 1 plate
2. Lyophilized Standard, 2 vials
3. Sample/Standard dilution buffer, 20 mL
4. Biotin-detection antibody (Concentrated), 120 uL
5. Antibody dilution buffer, 10 mL
6. HRP-Streptavidin Conjugate(SABC), 120 uL
7. SABC dilution buffer, 10 mL
8. TMB substrate, 10 mL
9. Stop solution, 10 mL
10. Wash buffer (25X), 30 mL
11. Plate Sealer, 5 pieces
12. Product Manual, 1 copy
Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Precision
Intra-Assay: CV<8%
Inter-Assay: CV<10%
Detection Range
0.312-20 ng/mL
Sensitivity
0.188 ng/mL
Standard Curve

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References


DMBT1 Homozygous Deletion in Diffuse Astrocytomas Is Associated With Unfavorable Clinical Outcome

JOURNAL OF NEUROPATHOLOGY AND EXPERIMENTAL NEUROLOGY

Authors: Motomura, Kazuya; Mittelbronn, Michel; Paulus, Werner; Brokinkel, Benjamin; Keyvani, Kathy; Sure, Ulrich; Wrede, Karsten; Nakazato, Yoichi; Tanaka, Yuko; Pierscianek, Daniela; Kim, Young-Ho; Mariani, Luigi; Vital, Anne; Ohgaki, Hiroko

Primary glioblastomas develop with a short clinical history, without evidence for less malignant precursor lesions, while secondary glioblastomas slowly develop via progression from diffuse astrocytoma (WHO grade II) or anaplastic astrocytoma (WHO grade III). The time until progression and the clinical outcome of diffuse astrocytomas vary significantly. We have shown that IDH1 mutations reliably distinguish between primary glioblastomas (without IDH1 mutations) and secondary glioblastomas (with IDH1 mutations). The most frequent genetic alteration shared by primary and secondary glioblastomas is loss of heterozygosity at 10q (up to 60% of cases). Here, we first assessed The Cancer Genome Atlas data to identify gene loss at 10q in glioblastomas with or without IDH1 mutations. Using log-ratio thresholds of -1.0, 10 genes were identified; with the log-ratio thresholds of -2.0, only the DMBT1 (deleted in malignant brain tumor 1) gene at 10q26.13 remained as a deleted gene in glioblastomas with or without IDH1 mutations (12.5% vs 8.0%). We then analyzed a total of 404 gliomas by differential polymerase chain reaction and found a DMBT1 homozygous deletion at a similar frequency in primary and secondary glioblastomas (19.6% vs 20.8%). A fraction (11.3%) of diffuse astrocytomas showed a DMBT1 homozygous deletion that was significantly associated with a shorter overall survival (52.8 vs 84.0 months; p = 0.003). These results indicate that a DMBT1 homozygous deletion is present in a fraction of diffuse astrocytomas and that it is associated with an unfavorable clinical outcome.

Different Forms of TFF3 in the Human Saliva: Heterodimerization with IgG Fc Binding Protein (FCGBP)

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

Authors: Houben, Till; Harder, Soenke; Schlueter, Harmut; Kalbacher, Hubert; Hoffmann, Werner

The peptide TFF3 is a member of a family of secretory lectins, and is typically synthesized by mucous epithelia together with mucins. It is mainly released from intestinal goblet cells as a high-molecular mass heterodimer with IgG Fc binding protein (FCGBP). Herein, we investigated human saliva by fast protein liquid chromatography (FPLC) and proteomics and identified high- and low-molecular-mass forms of TFF3. Whereas the high-molecular-mass forms represent a heterodimer with FCGBP, the low-molecular-mass forms represent homodimeric TFF3 forms. Proteomic analysis also revealed a C-terminally truncated form of TFF3. We hypothesize that salivary TFF3-FCGBP might play a role in the innate immune defense of the oral cavity and that TFF3 might also bind to microbial glycans. The known interaction of TFF3 with the agglutinin DMBT-1, a typical constituent of human saliva, further supports this protective role.

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