scholarly journals DVL3 is over-expressed in the tumors of breast cancer patients treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published and public microarray and gene expression data (3, 4) to discover in an unbiased manner the most striking transcriptional features of trastuzumab treatment. We identified significant differential expression of the gene encoding the Wnt pathway molecule dishevelled-3, DVL3 (5-7), in the primary tumors of breast cancer patients treated with trastuzumab. DVL3 expression in primary tumors of the breast in patients treated with trastuzumab was significantly higher than in patients not treated with trastuzumab.

2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified NEUROD4 among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of NEUROD4 messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of NEUROD4 in primary tumors of the breast, demonstrating increased expression of a transcription factor with neurogenic potential (5, 6) as a direct transcriptional consequence of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified the slit guidance ligand 1, encoded by SLIT1, as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of SLIT1 messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of SLIT1 in primary tumors of the breast, demonstrating increased expression of a ligand involved in guidance of axon migration in the central nervous system (5-9) as a direct transcriptional consequence of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified the collagen β(1-O) galactosyltransferase 2, COLGALT2, as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of COLGALT2 messenger RNA than did patients not treated with trastuzumab, demonstrating increased expression of an enzyme involved in collagen glycosylation and associated with metastasis and proliferation in osteosarcoma (5) as a transcriptional consequence of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified EphB4 as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed lower levels of EphB4 messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of EphB4 in primary tumors of the breast, demonstrating decreased expression of a receptor tyrosine kinase that can impair tumorigenicity of breast cancer cells (5) as a direct transcriptional result of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most striking transcriptional features of trastuzumab treatment. We identified the activator of the maturation-promoting factor, CDC25C (5-12) as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of CDC25C messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of CDC25C in primary tumors of the breast, demonstrating that a critical component of the cellular machinery that facilitates progression of cells through mitosis (5-12) is likely transcriptionally induced in primary tumors of the breast by trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified BMPR1B among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of BMPR1B messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of BMPR1B in primary tumors of the breast, demonstrating increased expression of a receptor subunit for a bone morphogenetic protein that is important for development of the ventral retina and optic nerve (5) as a direct transcriptional consequence of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified the E3 ubiquitin ligase SIAH1 as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of SIAH1 messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of SIAH1 in primary tumors of the breast, demonstrating increased expression of a molecule that functions in targeting an apoptotic effector (HIPK2) for proteasomal degradation (5) as a direct transcriptional result of treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most striking transcriptional features of trastuzumab treatment. We identified the deleted in colorectal cancer locus DCC (5, 6) as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of DCC messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of DCC in primary tumors of the breast, demonstrating that a gene encoding for a netrin receptor, cellular machinery utilized for axon guidance in the central nervous system (5-9), is transcriptionally induced in primary tumors of the breast following treatment with trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most striking transcriptional features of trastuzumab treatment. We identified the megakaryocyte-associated tyrosine kinase MATK (5, 6) as among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of MATK messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of MATK in primary tumors of the breast, demonstrating that a platelet-expressed tyrosine kinase (5, 6) that interacts with the receptor for the stem cell factor (7) is likely transcriptionally induced in primary tumors of the breast by trastuzumab.


2020 ◽  
Author(s):  
Shahan Mamoor

Trastuzumab (Herceptin) is a monoclonal antibody targeting the extracellular domain of the human epidermal growth factor receptor 2 (HER2) (1) utilized for the treatment of adjuvant and metastatic breast cancer (2) in the United States and worldwide. We mined published microarray and gene expression data (3, 4) to discover in an unbiased manner the most significant transcriptional changes associated with trastuzumab treatment. We identified ENHO among the genes most differentially expressed in the primary tumors of patients with breast cancer treated with trastuzumab. The primary tumors of breast cancer patients treated with trastuzumab expressed higher levels of ENHO messenger RNA than did patients not treated with trastuzumab, and a single administration of trastuzumab was sufficient to result in differential expression of ENHO in primary tumors of the breast, demonstrating increased expression of a molecule involved in regulation of glucose and lipid metabolism and whose expression is modulated by high-fat diet (5) as a direct transcriptional consequence of treatment with trastuzumab.


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