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Figuerêdo SH, Neto RSC, Ferreira E, Cassali GD, Estrela-Lima A, Damasceno KA. Expression of VCAN and its receptors in canine mammary carcinomas with or without myoepithelial proliferation. Res Vet Sci 2021; 140:56-63. [PMID: 34399281 DOI: 10.1016/j.rvsc.2021.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 07/13/2021] [Accepted: 08/06/2021] [Indexed: 12/24/2022]
Abstract
The proteoglycan versican (VCAN) plays a complex role in cancer. The expression of this molecule has been related to invasion and progression in malignant mixed tumors, such as carcinoma in mixed tumors (CMT) of the canine mammary gland. In addition, its interaction with surface cell receptors EGFR, HER-2 and CD44 in malignant epithelial cells may be responsible for proliferation and cellular motility in early stages of cancer. We comparatively evaluated the expression of this proteoglycan and its receptors in in situ and invasive areas of simple carcinomas (SC) and CMT to investigate similarities and differences between these histological types. Immunohistochemistry was performed with anti-VCAN, anti-CD44, anti-EGFR and anti-HER-2 antibodies in 32 cases of SC or CMT. VCAN was highly expressed in stroma adjacent to invasive areas in SC and CMT. CMTs presented comparatively higher expression of VCAN in stroma adjacent to in situ and in invasive areas than in corresponding areas in SCs. In CMT, EGFR and HER-2 expressions were higher in situ compared to invasive areas. In contrast, increased CD44 and EGFR expression was found in invasive areas in SC compared to CMT. These results indicate that versican expression is similarly associated with invasiveness in SC and CMT, however higher levels were seen in CMT suggesting that the presence of myoepithelial proliferation in this tumor type participates in stromal composition and promoting an increase in the expression of versican.
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Affiliation(s)
- S H Figuerêdo
- Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, 121 Rua Waldemar Falcão., Salvador BA 40296-710, Brazil
| | - R S Carmo Neto
- Department of Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, s/n° Adhemar de Barros., Salvador BA 40170-110, Brazil
| | - E Ferreira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, 6627 Av. Pres. Antônio Carlos, Belo Horizonte MG 31270-901, Brazil
| | - G D Cassali
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, 6627 Av. Pres. Antônio Carlos, Belo Horizonte MG 31270-901, Brazil
| | - A Estrela-Lima
- Department of Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, s/n° Adhemar de Barros., Salvador BA 40170-110, Brazil
| | - K A Damasceno
- Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, 121 Rua Waldemar Falcão., Salvador BA 40296-710, Brazil.
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Damasceno KA, Ferreira E, Estrela-Lima A, Gamba CDO, Miranda FF, Alves MR, Rocha RM, de Barros ALB, Cassali GD. HER-2 and EGFR mRNA Expression and Its Relationship with Versican in Malignant Matrix-Producing Tumors of the Canine Mammary Gland. PLoS One 2016; 11:e0160419. [PMID: 27490467 PMCID: PMC4973898 DOI: 10.1371/journal.pone.0160419] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/19/2016] [Indexed: 12/26/2022] Open
Abstract
Versican expression promotes tumor growth by destabilizing focal cell contacts, thus impeding cell adhesion and facilitating cell migration. It not only presents or recruits molecules to the cell surface, but also modulates gene expression levels and coordinates complex signal pathways. Previously, we suggested that the interaction between versican and human epidermal growth factor receptors may be directly associated with tumor aggressiveness. Thus, the expression of EGFR and HER-2 in these neoplasms may contribute to a better understanding of the progression mechanisms in malignant mammary tumors. The purpose of this study was to correlate the gene and protein expressions of EGFR and HER2 by RNA In Situ Hybridization (ISH) and immunohistochemistry (IHC), respectively, and their relationship with the versican expression in carcinomas in mixed tumors and carcinosarcomas of the canine mammary gland. The results revealed that EGFR mRNA expression showed a significant difference between in situ and invasive carcinomatous areas in low and high versican expression groups. Identical results were observed in HER-2 mRNA expression. In immunohistochemistry analysis, neoplasms with low versican expression showed greater EGFR immunostaining in the in situ areas than in invasive areas, even as the group presenting high versican expression displayed greater EGFR and HER-2 staining in in situ areas. Significant EGFR and HER-2 mRNA and protein expressions in in situ carcinomatous sites relative to invasive areas suggest that these molecules play a role during the early stages of tumor progression.
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MESH Headings
- Animals
- Dog Diseases/genetics
- Dog Diseases/metabolism
- Dogs
- ErbB Receptors/genetics
- Extracellular Matrix/genetics
- Extracellular Matrix/metabolism
- Extracellular Matrix/pathology
- Female
- Gene Expression Regulation, Neoplastic
- Mammary Neoplasms, Animal/genetics
- Mammary Neoplasms, Animal/metabolism
- Mammary Neoplasms, Animal/pathology
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- RNA, Neoplasm/biosynthesis
- RNA, Neoplasm/genetics
- Receptor, ErbB-2/biosynthesis
- Receptor, ErbB-2/genetics
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Affiliation(s)
- Karine Araújo Damasceno
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Mina Gerais, Brazil
- Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
| | - Enio Ferreira
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Mina Gerais, Brazil
| | - Alessandra Estrela-Lima
- Department of Pathology and Clinics, School of Veterinary Medicine and Zootechny, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Conrado de Oliveira Gamba
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Mina Gerais, Brazil
| | - Fernanda Freitas Miranda
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Mina Gerais, Brazil
| | - Mariana Rezende Alves
- International Center of Research in Cancer (CIPE), A.C. Camargo Cancer Center, São Paulo, São Paulo, Brazil
| | - Rafael Malagoli Rocha
- International Center of Research in Cancer (CIPE), A.C. Camargo Cancer Center, São Paulo, São Paulo, Brazil
| | - André Luís Branco de Barros
- Department of Clinical and Toxicological Analyses, School of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Geovanni Dantas Cassali
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Mina Gerais, Brazil
- * E-mail:
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Versican expression in myoepithelial cells from carcinomas in canine mixed mammary tumors. Vet J 2014; 200:146-51. [DOI: 10.1016/j.tvjl.2014.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 01/24/2014] [Accepted: 01/26/2014] [Indexed: 12/14/2022]
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Abstract
Mammary mixed tumours are the most frequent neoplasias in female dogs. In humans, mixed tumours are frequently found in the salivary glands and are known as pleomorphic adenomas. In addition to their histomorphologic similarities, mixed tumours and pleomorphic adenomas have the potential to become malignant and give rise to carcinomas in mixed tumours and carcinomas ex-pleomorphic adenoma, respectively. The factors associated with malignant transformation are still poorly known in the case of canine mixed tumours. However, this form of neoplasia tends to be associated with a better prognosis than other malignant histological types. This paper discusses the main features associated with female canine mammary mixed tumours.
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Damasceno KA, Bertagnolli AC, Estrela-Lima A, Ribeiro LG, Rabelo BS, Campos CB, Barros AL, Cassali GD. Versican expression in canine carcinomas in benign mixed tumours: is there an association with clinical pathological factors, invasion and overall survival? BMC Vet Res 2012; 8:195. [PMID: 23082892 PMCID: PMC3534148 DOI: 10.1186/1746-6148-8-195] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 10/12/2012] [Indexed: 01/08/2023] Open
Abstract
Background Components of the extracellular matrix have been studied in an attempt to elucidate the mechanisms involved in the biological behaviour of tumours. The presence of the proteoglycan versican has been strongly associated with cancer development and progression. However, relationship between versican expression and clinical pathological factors and overall survival has not been previously studied in veterinary medicine. Carcinomas in benign mixed tumours (CBMTs) are one of the most common malignant tumours in female canines and can serve as models for studies of tumour progression. The aim of this study was to evaluate the expression of versican in in situ and invasive carcinomatous areas of canine CBMTs and to evaluate possible associations of versican expression with other classic prognostic factors and overall survival. Results Clinical staging; histological grade determination; immunohistochemical staining for versican, E-cadherin and Ki-67; and confirmation of invasion areas by staining for p63 and smooth muscle α-actin (α-SMA) were performed on 49 canine cases of CBMT. Tumour invasion was considered when suspicious Haematoxylin-Eosin
(HE)-stained areas showed a total loss of α-SMA and p63 immunoreactivity. Versican immunoreactivity was less intense in the areas adjacent to the in situ carcinomatous regions, compared to invasive regions, which showed extensive and strong staining. Conclusions Our data reveal that in canine CBMTs, versican expression differs significantly between invasive and
in situ areas, suggesting a role for this molecule in tumour progression. Although a direct relationship exists between versican and invasiveness, our results indicate that the isolated evaluation of this proteoglycan does not represent an independent prognostic factor in canine CBMTs.
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Affiliation(s)
- Karine A Damasceno
- Department of General Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Jia XL, Li SY, Dang SS, Cheng YA, Zhang X, Wang WJ, Hughes CE, Caterson B. Increased expression of chondroitin sulphate proteoglycans in rat hepatocellular carcinoma tissues. World J Gastroenterol 2012; 18:3962-76. [PMID: 22912547 PMCID: PMC3419993 DOI: 10.3748/wjg.v18.i30.3962] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 03/28/2012] [Accepted: 04/13/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of chondroitin sulphate proteoglycans (CSPGs) in rat liver tissues of hepatocellular carcinoma (HCC).
METHODS: Thirty male Sprague Dawley rats were randomly divided into two groups: control group (n = 10) and HCC model group (n = 20). Rats in the HCC model groups were intragastrically administrated with 0.2% (w/v) N-diethylnitrosamine (DEN) every 5 d for 16 wk, whereas 0.9% (w/v) normal saline was administered to rats in the control group. After 16 wk from the initiation of experiment, all rats were killed and livers were collected and fixed in 4% (w/v) paraformaldehyde. All tissues were embedded in paraffin and sectioned. Histological staining (hematoxylin and eosin and Toluidine blue) was performed to demonstrate the onset of HCC and the content of sulphated glycosaminoglycan (sGAG). Immunohistochemical staining was performed to investigate the expression of chondroitin sulphate (CS)/dermatan sulphate (DS)-GAG, heparan sulphate (HS)-GAG, keratan sulphate (KS)-GAG in liver tissues. Furthermore, expression and distribution of CSPG family members, including aggrecan, versican, biglycan and decorin in liver tissues, were also immunohistochemically determined.
RESULTS: After 16 wk administration of DEN, malignant nodules were observed on the surface of livers from the HCC model group, and their hepatic lobule structures appeared largely disrupted under microscope. Toluidine blue staining demonstrated that there was an significant increase in sGAG content in HCC tissues when compared with that in the normal liver tissues from the control group [0.37 ± 0.05 integrated optical density per stained area (IOD/area) and 0.21 ± 0.01 IOD/area, P < 0.05]. Immunohistochemical studies demonstrated that this increased sGAG in HCC tissues was induced by an elevated expression of CS/DS (0.28 ± 0.02 IOD/area and 0.18 ± 0.02 IOD/area, P < 0.05) and HS (0.30 ± 0.03 IOD/area and 0.17 ± 0.02 IOD/area, P < 0.01) but not KS GAGs in HCC tissues. Further studies thereby were performed to investigate the expression and distribution of several CSPG components in HCC tissues, including aggrecan, versican, biglycan and decorin. Interestingly, there was a distinct distribution pattern for these CSPG components between HCC tissues and the normal tissues. Positive staining of aggrecan, biglycan and decorin was localized in hepatic membrane and/or pericellular matrix in normal liver tissues; however, their expression was mainly observed in the cytoplasm, cell membranes in hepatoma cells and/or pericellular matrix within HCC tissues. Semi-quantitative analysis indicated that there was a higher level of expression of aggrecan (0.43 ± 0.01 and 0.35 ± 0.03, P < 0.05), biglycan (0.32 ± 0.01 and 0.25 ± 0.01, P < 0.001) and decorin (0.29 ± 0.01 and 0.26 ± 0.01, P < 0.05) in HCC tissues compared with that in the normal liver tissues. Very weak versican positive staining was observed in hepatocytes near central vein in normal liver tissues; however there was an intensive versican distribution in fibrosis septa between the hepatoma nodules. Semi-quantitative analysis indicated that the positive rate of versican in hepatoma tissues from the HCC model group was much higher than that in the control group (33.61% and 21.28%, P < 0.05). There was no positive staining in lumican and keratocan, two major KSPGs, in either normal or HCC liver tissues.
CONCLUSION: CSPGs play important roles in the onset and progression of HCC, and may provide potential therapeutic targets and clinical biomarkers for this prevalent tumor in humans.
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Kobayashi T, Fujisawa A, Amagai M, Iwasaki T, Ohyama M. Molecular biological and immunohistological characterization of canine dermal papilla cells and the evaluation of culture conditions. Vet Dermatol 2011; 22:414-22. [PMID: 21410799 DOI: 10.1111/j.1365-3164.2011.00964.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The dermal papilla (DP) plays pivotal roles in hair follicle morphogenesis and cycling. However, our understanding of the biology of the canine DP is extremely limited. The aim of this study was to elucidate molecular biological and immunohistochemical characteristics of canine DP cells and determine appropriate conditions for in vitro expansion. Histological investigation revealed that the canine DP expressed biomarkers of human and rodent DP, including alkaline phosphatase (ALP) and versican. When microdissected, canine DP, but not fibroblasts, strongly expressed the DP-related genes for alkaline phosphatase, Wnt inhibitory factor 1 and lymphoid enhancer-binding factor 1, confirming successful isolation. The growth rate of isolated canine DP cells was moderate in conventional culture conditions for rodent and human DP; however, AmnioMAX-C100 complete medium allowed more efficient cultivation. Dermal papilla marker gene expression was maintained in early passage cultured DP cells, but gradually lost after the third passage. Approaches to mimic the in vivo DP environment in culture, such as supplementation of keratinocyte-conditioned medium or use of extracellular matrix-coated dishes, moderately ameliorated loss of DP gene expression in canine DP cells. It is possible that constituent factors in AmnioMAX may influence culture. These findings suggested that further refinements of culture conditions may enable DP cell expansion without impairing intrinsic properties and, importantly, demonstrated that AmnioMAX-cultured early passage canine DP cells partly maintained the biological characteristics of in vivo canine DP cells. This study provides crucial information necessary for further optimization of culture conditions of canine DP.
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Affiliation(s)
- Tetsuro Kobayashi
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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Jiang BZ, Yokohama-Tamaki T, Wang ZL, Obara N, Shibata S. Expression, localisation and synthesis of versican by the enamel organ of developing mouse molar tooth germ: an in vivo and in vitro study. Arch Oral Biol 2010; 55:995-1006. [PMID: 20813348 DOI: 10.1016/j.archoralbio.2010.07.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Revised: 07/28/2010] [Accepted: 07/29/2010] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Versican is a large, aggregating chondroitin sulphate proteoglycan. In dental tissue, versican expression occurs primarily in mesenchymal tissue but rarely in epithelial tissue. We investigated the expression, localisation and synthesis of versican in the enamel organ of the developing tooth germ. DESIGN To elucidate versican localisation in vivo, in situ hybridisation and immunohistochemistry were conducted in foetal ICR mice at E11.5-E18.5. Epithelium and mesenchyme from the lower first molars at E16.0 were enzymatically separated and versican mRNA expression was investigated by semi-quantitative RT-PCR. Organ culture of the separated samples combined with metabolic labelling with [(35)S], followed by gel filtration, was performed to analyse secreted proteoglycans. RESULTS Versican mRNA was first expressed in the thickened dental epithelium at E12.0 and continued to be expressed in the enamel organ until the bell stage. Versican immunostaining was detected in the stellate reticulum areas from the bud stage to the apposition stage. The enamel organ at E16.0 expressed versican mRNA at a level comparable to that in dental mesenchyme. Furthermore, when compared to dental mesenchyme, about 1/2-3/4 of the [(35)S]-labelled versican-like large proteoglycan was synthesised and released into tissue explants by the enamel organ. CONCLUSIONS The dental epithelium of developing tooth germ is able to synthesise significant amounts of versican.
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Affiliation(s)
- Bei-Zhan Jiang
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Kanazawa 1757 Tobetsu-cho, Ishikari-gun, Hokkaido 061-0293, Japan
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Yee AJM, Akens M, Yang BL, Finkelstein J, Zheng PS, Deng Z, Yang B. The effect of versican G3 domain on local breast cancer invasiveness and bony metastasis. Breast Cancer Res 2008; 9:R47. [PMID: 17662123 PMCID: PMC2206723 DOI: 10.1186/bcr1751] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2007] [Revised: 07/12/2007] [Accepted: 07/27/2007] [Indexed: 12/13/2022] Open
Abstract
Introduction Increased versican expression has been associated with local breast cancer invasiveness and a more aggressive tumor phenotype. The cellular mechanisms are not fully understood and this study evaluated versican G3 domain with its EGF-like motifs in influencing tumor invasion and metastasis. Methods One recombinant construct was synthesized (a signal peptide for product secretion and the versican G3 domain). The construct was stably transfected into human breast carcinoma MT-1 cells. Cell viability in vitro was evaluated in low serum and serum starvation conditions. In vivo study of tumor growth was evaluated in a nude mouse model. G3 effects on rodent vascular endothelial cells were evaluated in vitro on cell survival, apoptosis, migration, and vascular formation. The effects of VEGF, fibronectin, and G3 on vascular formation were examined. An intracardiac injection model of metastatic human breast carcinoma tested the effect of G3 on distant bony and soft tissue metastasis. Analysis of metastatic burden included histology, radiographs, and micro-CT quantification of osteolysis. Results A greater viability of cancer cells was observed in low serum and serum-free conditions in the presence of versican G3. Larger subcutaneous tumors were obtained in the G3 group following tumor cell injection into CD1 mice. G3 induced a greater degree of rodent vascular endothelial cell proliferation and migration in vitro. Simultaneous presence of fibronectin, VEGF, and G3 promoted endothelial cell migration in wound-healing assays as compared to the treatments containing none, one or two of these molecules. Systemic tumor burden to distant bony and soft tissue metastatic sites was greater in the G3 group using the intracardiac injection metastatic model Conclusion Versican G3 domain appears to be important in local and systemic tumor invasiveness of human breast cancer. Effects include enhancing cell viability, proliferation, migration and enhancing local tumor growth. Potential effects on angiogenesis include enhancing vascular endothelial proliferation, migration, and vessel formation. The interactions between tumor cells, surrounding stromal components and neo-vascularization in breast cancer may include interactions with VEGF and fibronectin. The propensity of versican G3 to influence tumor invasion to bone and the mechanisms of G3 mediated osteolysis warrants ongoing studies.
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Affiliation(s)
- Albert JM Yee
- Department of Surgery, University of Toronto, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm MG 371-B, Toronto, Ontario, M4N 3M5, Canada
| | - Margarete Akens
- Department of Surgery, University of Toronto, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm MG 371-B, Toronto, Ontario, M4N 3M5, Canada
| | - Bing L Yang
- Department of Surgery, University of Toronto, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm MG 371-B, Toronto, Ontario, M4N 3M5, Canada
| | - Joel Finkelstein
- Department of Surgery, University of Toronto, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm MG 371-B, Toronto, Ontario, M4N 3M5, Canada
| | - Peng-Sheng Zheng
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm S-110, Toronto, Ontario, M4N 3M5, Canada
| | - Zhaoqiong Deng
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm S-110, Toronto, Ontario, M4N 3M5, Canada
| | - Burton Yang
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Rm S-110, Toronto, Ontario, M4N 3M5, Canada
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Docampo MJ, Rabanal RM, Miquel-Serra L, Hernández D, Domenzain C, Bassols A. Altered expression of versican and hyaluronan in melanocytic tumors of dogs. Am J Vet Res 2007; 68:1376-85. [DOI: 10.2460/ajvr.68.12.1376] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Taatjes DJ, Zuber C, Roth J. The histochemistry and cell biology vade mecum: a review of 2005–2006. Histochem Cell Biol 2006; 126:743-88. [PMID: 17149649 DOI: 10.1007/s00418-006-0253-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2006] [Indexed: 02/07/2023]
Abstract
The procurement of new knowledge and understanding in the ever expanding discipline of cell biology continues to advance at a breakneck pace. The progress in discerning the physiology of cells and tissues in health and disease has been driven to a large extent by the continued development of new probes and imaging techniques. The recent introduction of semi-conductor quantum dots as stable, specific markers for both fluorescence light microscopy and electron microscopy, as well as a virtual treasure-trove of new fluorescent proteins, has in conjunction with newly introduced spectral imaging systems, opened vistas into the seemingly unlimited possibilities for experimental design. Although it oftentimes proves difficult to predict what the future will hold with respect to advances in disciplines such as cell biology and histochemistry, it is facile to look back on what has already occurred. In this spirit, this review will highlight some advancements made in these areas in the past 2 years.
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Affiliation(s)
- Douglas J Taatjes
- Department of Pathology, Microscopy Imaging Center, College of Medicine, University of Vermont, Burlington, VT 05405, USA.
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Taatjes DJ, Roth J. Recent progress in histochemistry and cell biology: the state of the art 2005. Histochem Cell Biol 2005; 124:547-74. [PMID: 16283358 DOI: 10.1007/s00418-005-0110-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2005] [Indexed: 10/25/2022]
Abstract
Advances in the field of histochemistry, a multidisciplinary area including the detection, localization and functional characterization of molecules in single cells and complex tissues, often drives the attainment of new knowledge in the broadly defined discipline of cell biology. These two disciplines, histochemistry and cell biology, have been joined in this journal to facilitate the flow of information with celerity from technical advancement in histochemical procedures, to their utilization in experimental models. This review summarizes advancements in these fields during the past year.
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Affiliation(s)
- Douglas J Taatjes
- Microscopy Imaging Center, Department of Pathology, College of Medicine, University of Vermont, Burlington, VT 05405, USA.
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