The role of the hypothalamic mTOR pathway in cachectic AH-130 tumor bearing rats
| Full text | |
| Author(s): Show less - |
de Matos-Neto, Emidio M.
[1]
;
Lima, Joanna D. C. C.
[1]
;
de Pereira, Welbert O.
[2]
;
Figueredo, Raquel G.
[1]
;
Riccardi, Daniela M. dos R.
[1]
;
Radloff, Katrin
[1]
;
das Neves, Rodrigo X.
[1]
;
Camargo, Rodolfo G.
[1]
;
Maximiano, Linda F.
[3]
;
Tokeshi, Flavio
[3]
;
Otoch, Jose P.
[3]
;
Goldszmid, Romina
[4]
;
Camara, Niels O. S.
[5]
;
Trinchieri, Giorgio
[4]
;
de Alcantara, Paulo S. M.
[3]
;
Seelaender, Marilia
[1]
Total Authors: 16
|
| Affiliation: | [1] Univ Sao Paulo, Fac Med, Canc Metab Res Grp, Sao Paulo - Brazil
[2] Israelite Albert Einstein Hosp, Israelite Albert Einstein Inst, Sao Paulo - Brazil
[3] Univ Sao Paulo, Dept Clin Surg, Sao Paulo - Brazil
[4] NIH, Ctr Canc Res, Bethesda, MD 20892 - USA
[5] Univ Sao Paulo, Dept Immunol, Sao Paulo - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | FRONTIERS IN IMMUNOLOGY; v. 6, DEC 24 2015. |
| Web of Science Citations: | 18 |
| Abstract | |
Cachexia affects about 80% of gastrointestinal cancer patients. This multifactorial syndrome resulting in involuntary and continuous weight loss is accompanied by systemic inflammation and immune cell infiltration in various tissues. Understanding the interactions among tumor, immune cells, and peripheral tissues could help attenuating systemic inflammation. Therefore, we investigated inflammation in the subcutaneous adipose tissue and in the tumor, in weight stable and cachectic cancer patients with same diagnosis, in order to establish correlations between tumor microenvironment and secretory pattern with adipose tissue and systemic inflammation. Infiltrating monocyte phenotypes of subcutaneous and tumor vascular-stromal fraction were identified by flow cytometry. Gene and protein expression of inflammatory and chemotactic factors was measured with qRT-PCR and Multiplex Magpix (R) system, respectively. Subcutaneous vascular-stromal fraction exhibited no differences in regard to macrophage subtypes, while in the tumor, the percentage of M2 macrophages was decreased in the cachectic patients, in comparison to weight-stable counterparts. CCL3, CCL4, and IL-I beta expression was higher in the adipose tissue and tumor tissue in the cachectic group. In both tissues, chemotactic factors were positively correlated with IL-1 beta. Furthermore, positive correlations were found for the content of chemoattractants and cytokines in the tumor and adipose tissue. The results strongly suggest that the crosstalk between the tumor and peripheral tissues is more pronounced in cachectic patients, compared to weight-stable patients with the same tumor diagnosis. (AU) | |
| FAPESP's process: | 12/50079-0 - Systemic inflammation in cachectic cancer patients: mechanisms and therapeutical strategies, a translational medicine approach |
| Grantee: | Marilia Cerqueira Leite Seelaender |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/10129-8 - Inflammation in the adipose tissue of patients with cancer cachexia: exercise training as a therapeutic strategy |
| Grantee: | Emidio Marques de Matos Neto |
| Support type: | Scholarships in Brazil - Doctorate |