Lymphoid populations and tumor disseminated cells in the bone marrow in early breast cancer
- Authors: Chulkova S.V.1,2, Sholokhova E.N.1, Kolbatskaya O.P.1, Gladilina I.A.1,2, Egorova A.V.2, Stilidi I.S.1, Zabotina T.N.1
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Affiliations:
- N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
- N.I. Pirogov Russian National Research Medical University (Pirogov University), Ministry of Health of Russia
- Issue: Vol 25, No 1 (2026)
- Pages: 94-102
- Section: ORIGINAL REPORTS
- Published: 30.04.2026
- URL: https://bioterapevt.abvpress.ru/jour/article/view/1616
- DOI: https://doi.org/10.17650/1726-9784-2026-25-1-94-102
- ID: 1616
Cite item
Abstract
Background. The study of lymphoid populations is a necessary step for understanding the interaction between the tumor and the immune system, as well as for a detailed analysis of the persistence of tumor cells in the bone marrow of patients with breast cancer. Lymphoid populations of the bone marrow can serve as a potential point of application for immunotherapy.
Aim. To study the composition of lymphoid populations and assess the relationship with disseminated tumor cells in the bone marrow of patients with operable breast cancer
Materials and methods. The study included 65 bone marrow samples obtained by sternal puncture in patients with breast cancer. Ductal adenocarcinoma stage T1 / T2, N0 status prevailed. Luminal A was detected in 51.3 %, luminal B 10.3 %, Erb-B2 overexpressing subtype was established in 15.4 % and triple-negative subtype in 6.4 %. T cells (CD3), B cells (CD19), NK cells (CD56+CD3– ), minor populations of TCRγδ and TCRαβ lymphocytes, CD4+CD25+ T cells, subpopulations of CD10+, CD38+, CD5+ B cells were studied. CD45+EpCAM+ cells among myelokaryocytes of a bone marrow sample were assessed. An immunological study of bone marrow using monoclonal antibodies (Becton Diskinson, USA) was performed on a FACS Canto II flow cytometer. The results were analyzed using the Kaluza Analysis v.2.1 program.
Results. A relationship was established between CD19+CD10+ cells and the morphological type of breast cancer: their increased content was noted in ductal adenocarcinoma (p ≤0.05). There was a relationship between lymphogenous metastasis and the level of CD5+CD38+ cells (p ≤0.05). In high-grade cancer, there was an increase in the proportion of CD4+CD25+ cells, estrogen-positive tumors were distinguished by the predominance of NK cells in the bone marrow (p ≤0.05). T-lymphoid populations are associated with the presence of disseminated tumor cells in the bone marrow. An increase in the proportion of CD4+CD25+ with a decrease in the number of CD3+HLA-DR+ and B-cells was noted (p = 0.03).
Conclusion. Lymphoid populations of the bone marrow are associated with the morphological characteristics of breast cancer. In metastatic bone marrow lesions, the proportion of T-cell lymphoid populations changes and the number of B-cells decreases.
Keywords
About the authors
Svetlana V. Chulkova
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia; N.I. Pirogov Russian National Research Medical University (Pirogov University), Ministry of Health of Russia
Author for correspondence.
Email: chulkova@mail.ru
ORCID iD: 0000-0003-4412-5019
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522; Build. 6, 1 Ostrovityanova St., Moscow 117513
Elena N. Sholokhova
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0002-1456-1904
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522
Olga P. Kolbatskaya
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0001-8493-9012
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522
Irina A. Gladilina
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia; N.I. Pirogov Russian National Research Medical University (Pirogov University), Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0002-2481-0791
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522; Build. 6, 1 Ostrovityanova St., Moscow 117513
Angelina V. Egorova
N.I. Pirogov Russian National Research Medical University (Pirogov University), Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0003-3904-8530
Russian Federation, Build. 6, 1 Ostrovityanova St., Moscow 117513
Ivan S. Stilidi
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0002-0493-1166
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522
Tatiana N. Zabotina
N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
Email: chulkova@mail.ru
ORCID iD: 0000-0001-7631-5699
Russian Federation, 24 Kashirskoe Shosse, Moscow 115522
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