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Pro-tumoral immune ...
Pro-tumoral immune cell alterations in wild type and Shb-deficient mice in response to 4T1 breast carcinomas
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- Li, Xiujuan (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi,Soochow University, Suzhou, China
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- Singh, Kailash (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Luo, Zhengkang (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Mejia Cordova, Mariela (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Jamalpour, Maria (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Lindahl, Björn (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Zhang, Ganlin (author)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Sandler, Stellan (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Welsh, Michael, 1957- (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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(creator_code:org_t)
- 2018-04-10
- 2018
- English.
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In: Oncotarget. - : Impact Journals, LLC. - 1949-2553. ; 9:27, s. 18720-18733
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Abstract
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- To assess mechanisms responsible for breast carcinoma metastasis, 4T1 breast carcinomas were grown orthotopically in wild type or Shb knockout mice. Tumor growth, metastasis, vascular characteristics and immune cell properties were analyzed. Absence of Shb did not affect tumor growth although it increased lung metastasis. Shb knockout mouse tumors showed decreased redness and less developed vascular plexa located at the periphery of the tumors. No difference in overall tumor vascular density, leakage or pericyte coverage was noted between the genotypes although the average vessel size was smaller in the knockout. Tumors induced an increase of CD11b+ cells in spleen, lymph node, thymus, bone marrow and blood. Numbers of Shb knockout CD11b/CD8+ cells were decreased in lymph nodes and bone marrow of tumor bearing mice. Mice with tumors had reduced numbers of CD4+ lymphocytes in blood/lymphoid organs, whereas in most of these locations the proportion of CD4+ cells co-expressing FoxP3 was increased, suggesting a relative increase in Treg cells. This finding was reinforced by increased blood interleukin-35 (IL-35) in wild type tumor bearing mice. Shb knockout blood showed in addition an increased proportion of IL-35 expressing Treg cells, supporting the notion that absence of Shb further promotes tumor evasion from immune cell recognition. This could explain the increased number of lung metastases observed under these conditions. In conclusion, 4T1 tumors alter immune cell responses that promote tumor expansion, metastasis and escape from T cell recognition in an Shb dependent manner.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
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- ref (subject category)
- art (subject category)
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Oncotarget
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- By the author/editor
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Li, Xiujuan
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Singh, Kailash
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Luo, Zhengkang
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Mejia Cordova, M ...
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Jamalpour, Maria
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Lindahl, Björn
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Zhang, Ganlin
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Sandler, Stellan
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Welsh, Michael, ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Cell and Molecul ...
- Articles in the publication
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Oncotarget
- By the university
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Uppsala University