scholarly journals TNFSF8 (CD153 / CD30L) is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Messenger Rna ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Complete Understanding ◽  
Primary Tumors ◽  
Trastuzumab Treatment ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that TNFSF8, also known as CD153 and CD30 ligand (CD30L) was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab. TNFSF8 messenger RNA expression was significantly enhanced in the primary tumors of patients treated with trastuzumab. Thus, trastuzumab treatment in patients with breast cancer is associated with increased expression, in primary tumors of the breast, of a marker with broad expression in multiple human cancers of the hematopoietic system (5, 6), and with the capacity to regulate immunoglobulin class switching (7).

scholarly journals Frizzled class receptor 7 is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Signal Transduction ◽  
Embryonic Stem ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Complete Understanding ◽  
Primary Tumors ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the Wnt pathway receptor frizzled-7, FZD7, was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at significantly higher levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with increased expression of a signal transduction receptor that can support proliferation of triple negative breast cancer cells (5) and is required for the maintenance of pluripotency of human embryonic stem cells (6).

scholarly journals Platelet-derived growth factors α and β are differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Growth Factors ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Human Breast ◽  
Complete Understanding ◽  
Primary Tumors ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that platelet-derived growth factors α and β , PDGF-α and PDGF-β, are among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at significantly higher levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with increased expression growth factors important for development of the neural crest and neural tube (5,6).

scholarly journals Bcl-XL (BCL2L1) is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Messenger Rna ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Breast Cancer Patients ◽  
Primary Tumors ◽  
Trastuzumab Treatment ◽  
Apoptotic Protein ◽  
Cellular Machinery ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that anti-apoptotic protein Bcl-XL, also known as BCL2L1 was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab. BCL2L1 messenger RNA expression was markedly enhanced in the primary tumors of patients treated with trastuzumab. Thus, trastuzumab treatment in patients with breast cancer is associated with increased expression, in primary tumors of the breast, of cellular machinery that prevents cell death (5-9).

scholarly journals GAS7 is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Specific Gene ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Human Breast ◽  
Complete Understanding ◽  
Primary Tumors ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the growth arrest-specific gene 7, GAS7, was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at lower levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with increased expression of a gene (5) that can induce neurite outgrowth and support survival of acute lymphoblastic leukemias (6).

scholarly journals The placental growth factor (PGF) is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Growth Factor ◽  
Growth Factor Receptor ◽  
Placental Growth Factor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Primary Tumors ◽  
Epidermal Growth ◽  
The Brain

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the placental growth factor, encoded by PGF was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at lower levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with increased expression of a growth factor that is chemotactic, angiogenic (5) and important for growth of blood vessels in the brain (6).

scholarly journals Six homeobox 6 (SIX6) is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Visual Processing ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Primary Tumors ◽  
Optic Stalk ◽  
The Central Nervous System ◽  
Epidermal Growth

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the six homeobox 6, SIX6, was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at higher levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with activation of a gene important for maintenance of multipotent retinal progenitors and expressed in regions of the central nervous system involved in visual processing including the optic stalk and retina (5-8).

scholarly journals A second erb-B receptor tyrosine kinase, ERBB4, is differentially expressed in the tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Tyrosine Kinase ◽  
Receptor Tyrosine Kinase ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Breast Cancer Patients ◽  
Primary Tumors ◽  
Trastuzumab Treatment ◽  
Erbb2 Gene ◽  
Epidermal Growth

HER2, the human epidermal growth factor receptor 2, is encoded by the ERBB2 gene (1). Trastuzumab, a monoclonal antibody that targets HER2, is utilized for the treatment of breast cancer (2). We recently reported that trastuzumab treatment paradoxically increases HER2 expression in the primary tumors of patients with breast cancer (3). We report here, using analysis of published microarray data (4, 5), that a second erb-B receptor tyrosine kinase, ERRB4, is also differentially expressed in the tumors of patients with breast cancer treated with trastuzumab. Trastuzumab treatment appears to be associated with the up-regulation of two members of the erb-B receptor tyrosine kinase family in human breast cancer.

scholarly journals TNFAIP1 is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Expression Data ◽  
Breast Cancer Patients ◽  
Necrosis Factor Alpha ◽  
Primary Tumors ◽  
Epidermal Growth ◽  
Factor Alpha ◽  
Necrosis Factor

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the tumor necrosis factor alpha-induced protein 1, TNFAIP1, was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab, and expressed at lower levels in the tumors of patients treated with trastuzumab. Thus, the use of trastuzumab in patients with breast cancer is associated with decreased expression of a gene (5) that can induce apoptosis of cancer cells (6).

scholarly journals TAL1 is differentially expressed in the primary tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Transcription Factor ◽  
Messenger Rna ◽  
Lymphoblastic Leukemia ◽  
Growth Factor Receptor ◽  
Differentially Expressed ◽  
Breast Cancer Patients ◽  
Primary Tumors ◽  
Trastuzumab Treatment ◽  
Cell Acute Lymphoblastic Leukemia

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the transcription factor TAL1 was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab. TAL1 messenger RNA expression was markedly enhanced in the primary tumors of patients treated with trastuzumab. Thus, trastuzumab treatment in patients with breast cancer is associated with increased expression, in primary tumors of the breast, of a transcription factor whose activation by mutation results in development of T-cell acute lymphoblastic leukemia (5-8).

scholarly journals Trastuzumab administration in patients with breast cancer is associated with increased primary tumor expression of CEACAM1.

2020 ◽  
Author(s):  
Shahan Mamoor
Keyword(s):  
Breast Cancer ◽  
Cell Adhesion Molecule ◽  
Growth Factor Receptor ◽  
Expression Data ◽  
Human Breast ◽  
Complete Understanding ◽  
Primary Tumors ◽  
Trastuzumab Treatment ◽  
Epidermal Growth ◽  
Tumor Expression

Trastuzumab, a monoclonal antibody targeted against the human epidermal growth factor receptor 2 (HER2) is utilized for the treatment of human breast cancer (1, 2), but a complete understanding of how tumor signal transduction is modulated by trastuzumab treatment is lacking. By mining published and public microarray and gene expression data (3, 4) from the primary tumors of patients treated with trastuzumab, we found that the cell adhesion molecule CEACAM1 was among the genes most differentially expressed in the primary tumors of patients treated with trastuzumab. Thus, a molecule whose expression is predictive of metastatic disease in patients with malignant melanoma (5) and whose expression in melanoma cell lines can support invasive properties (6) is expressed at significantly higher levels in the primary tumors of patients treated with trastuzumab for breast cancer.

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