Connecting Effective Immune Response, Fluorescent Granzyme B-like Peptide, Specific Peptide Binding Patterns, Patients with Cancer and Viral Infection, in Remission, Clinical Significance, and Liquid Biopsy
| Autor: | Wai Chun Jennifer Lo, Donald Gene Luther |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Sociology and Political Science Clinical Biochemistry Peptide binding Biochemistry Fluorescence Granzymes 03 medical and health sciences 0302 clinical medicine Immune system Pancreatic cancer Neoplasms Influenza Human medicine Humans Liquid biopsy Spectroscopy Whole blood biology Chemistry Remission Induction Liquid Biopsy Cancer medicine.disease Peptide Fragments Granzyme B Clinical Psychology 030104 developmental biology Granzyme Influenza A virus 030220 oncology & carcinogenesis Case-Control Studies biology.protein Cancer research Law Social Sciences (miscellaneous) T-Lymphocytes Cytotoxic |
| Zdroj: | Journal of fluorescence. 26(6) |
| ISSN: | 1573-4994 |
| Popis: | Functional cytotoxic-T-lymphocytes (CTL) with granzyme B play an important role in an effective immune response to tumor growth and infection progression. Tumor cells and platelets in peripheral whole blood smears of cancer patients have shown the presence of innate binding targets for GP1R, a fluorescent synthetic Granzyme B-like peptide. It is not known if similar GP1R-binding targets and specific binding patterns are detectable in peripheral blood of patients with viral infection. It is also not known if a specific binding pattern may be associated with an effective immune response to indicate a favorable prognosis. We reviewed the GP1R-binding patterns in the peripheral blood smears of 5 patients in remission at the time of sampling (3 with cancer and 2 with flu-like symptoms) and a negative control. We show with fluoroscopic images that there are: 1) fluorescent GP1R-binding targets mostly in the cytoplasmic areas of nucleated cells in patients with breast and lung cancer who have longer survival, 2) intense fluorescent deposits mostly in the nuclear areas of segmented neutrophils in patients recovered from severe to mild flu-like symptoms, 3) discernible fluorescent deposits in the cytoplasmic areas of small lymphocyte-like elements and overall intense fluorescent stain in large cells in the patient with advanced pancreatic cancer who had shorter survival, 4) GP1R-binding targets in numerous platelet-like elements in all 5 patients. The control sample did not show similar binding patterns. The potential association between specific GP1R-binding patterns in peripheral blood samples and prognostic significance, and its use as liquid biopsy are discussed. |
| Databáze: | OpenAIRE |
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